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| author | Ruben Undheim <ruben.undheim@gmail.com> | 2018-10-20 17:43:57 +0200 |
|---|---|---|
| committer | Ruben Undheim <ruben.undheim@gmail.com> | 2018-10-20 17:43:57 +0200 |
| commit | 04d5d0ea0f65a434e568fe031f6396caec9b3a8d (patch) | |
| tree | decc35c37120084c4a55311cb4e801524369ff57 /CHANGES | |
Import Upstream version 3.8.78.dfsg
Diffstat (limited to 'CHANGES')
| -rw-r--r-- | CHANGES | 2786 |
1 files changed, 2786 insertions, 0 deletions
@@ -0,0 +1,2786 @@ +Xcircuit v3.x Change Log (file CHANGES) +---------------------------------------------------------------------- + +Please note that there is an automatically-generated, up-to-date list +of the most recent code changes at the URL + + http://opencircuitdesign.com/xcircuit/changes.html + +Occasionally I spend some time to convert that list into text and put it +back here. So if you're looking for the most recent changes, try the +website. + +Version 3.6 (January 2006 to present) +---------------------------------------------------------------------- +369 v3.6 rev 21 4/7/06 + Incorporated Michael Goffioul's code for (native) Windows + compilation. + +368 v3.6 rev 20 4/5/06 + Fixed an error with the -noconsole -nowindow startup, where + the option switches were passed to GUI_init; XCircuit now + searches the arguments for a Tk window name rather than relying + on the number of arguments to figure out whether or not it is + running in batch mode. + Also: Fixed an error in a Wprintf() statement when a library + file cannot be found. + +368 v3.6 rev 19 3/31/06 + Fixed the select color, which got changed to cyan because the + wrong line was deleted from the source file. Also, implemented + a policy of removing redundant points after a line has been + drawn, because some drawing programs use left-button + middle- + button, and I've seen several xcircuit novices doing this. + Also: Fixed the undo mechanism with respect to rotates and + flips, so that rotates and flips during a move or copy operation + don't screw up the undo operation. + Also: Changed the look of the GUI a bit, with softer colors and + no red borders around the buttons and message widgets. + +367 v3.6 rev 18 3/30/06 + Added command option "config database" to update the internal + list of colors, fonts, and other values that should be able + to be set with the Tk "option" command. This now allows colors + to be redefined from within the startup script. Removed the + "query" color, which is no longer used, and the "filter2" and + "bar2" colors, which are (and never were) necessary. + +366 v3.6 rev 17 3/28/06 + Reorganized the source code to separate most of the Xt GUI + functions into two separate files, xtgui.c and xtfuncs.c. + +365 v3.6 rev 16 3/27/06 + Changed the "keybind" function to be per-window so that the + scroll-wheel and auto-increment functions work in multiple + xcircuit windows. + Also: Corrected a bad error that allowed an object instance + being moved to be selected when "carrying" it into another + object, causing xcircuit to crash. + Also: Changed the behavior of Tcl expression parameters so that + the parameter evaluation is done ONLY as part of the opsubstitute() + routine; this places some restrictions on the use of expression + parameters but should avoid problems where expression parameters + make XCircuit crash. + Also: Created a new symbol "netpointer" in the generic library + that implements a "netlist get" function. Corrected a number of + errors related to properly executing expression parameters. + Also: Added "analoglib3.lps" and "digitallib.lps" to the installed + libraries. + Also: Corrected the library zoom/position problem definitively + (see note for revision 13). + +364 v3.6 rev 15 3/22/06 + Added command options "library writable" and "library changed". + Removed the "Library: " string from the beginning of library + names. Modified the "Write All" Tcl script to handle automatic + writeback of libraries that have changed, and to note libraries + that have changed but which are not writable. + +364 v3.6 rev 14 3/21/06 + Added the "-target <library>" option to the "page load" command. + This allows objects in a file to be placed somewhere other than + the "User Library", without having to move them by hand. Let + XCOps(library) stand for *both* the -replace and -target libraries. + Fixed the Tcl wrapper script procedures accordingly. + Also: Added command-line options "xcircuit --help" and + "xcircuit --version" providing essential information. + Also: Added command option "library compose", although the fact + that the library does not get composed in certain cases needs to + be investigated. + Also: Added variable xobjs.hold = XCOps(hold); when FALSE, the + mouse HOLD modifier is disabled (perhaps this should be an + integer that sets the delay time, with 0 = disabled?). + Also: Fixed menu command callbacks that were broken for several + revisions. + +363 v3.6 rev 13 3/18/06 + Various fixes to correct problems found running various steps + while writing tutorial number 3: Fixed Alt-f key binding for + font changes, user library redraw (still is wrong somewhere), + variable substitution in filenames, and a few others. + +362 v3.6 rev 12 3/17/06 + Added the ability to move objects both within a library and between + libraries simply by using the "library move" macro (Shift-M) to + pick up the object, then transferring it between library pages. + Also, virtual copies can be made of any object in the library (not + just those that have paramters), and the virtual copies can be + flipped and rotated. + Also: Fixed the "-noconsole -nowindow" invocation, which was + broken. + Also: Added variable and tilde expansion to filenames in the + "%F" and "%f" escapes in info labels. + +361 v3.6 rev 11 3/15/06 + Corrected a number of event errors, including the inability to + select from the library via a button tap and drop into "move" + mode. + Also: Implemented a version of James Vernon's mouse button hints. + Also: Corrected the LaTeX mode output to properly account for files + with non-".ps" extensions (e.g., ".eps"). + +360 v3.6 rev 10 3/14/06 + Corrected an error which prevented edited library object names + from being applied to the object name. This resulted in confusion, + because the library would show the modified name, while the + object itself retained its original name. + Also: Added multiple window handling to the undo/redo mechanism. + Also: Added a window close procedure and a command "config delete" + to correspond to it. + +359 v3.6 rev 9 3/13/06 + A number of fixes to the key binding and function dispatch + routines from rev 8: Fixed Finish_Copy mode, fixed handling + of ASCII keystrokes in text entry modes, fixed retention of + view scale and position after displaying a library page. + Fixed error in prohibiting justification action in "normal" + mode. + Also: A number of fixes to the wrapper window menus for + multiple pages: Changed library and page menus to be shared, + applied new color, font, and encoding functions to all windows, + and fixed the Tk color picker call for the "add new color" menu + option. + +359 v3.6 rev 8 3/12/06 + Major overhaul of the key binding and function dispatching + mechanisms to accomodate multiple windows. + Still to be done: Some menu items (lists of Libraries and + Pages, for example) need to be shared among all windows. + Need a window close routine. Need a routine to transfer a + selection between two windows. Need to handle multiple + windows in undo/redo. + Also: Fixed a warning message on number of parts that should + apply only to library objects, not pages. + +358 v3.6 rev 7 2/24/06 + Changed the meaning of CAD_HOME to point to "libdir", such + that distributions can set it to something like /usr/share + without causing trouble. Changed CAD_HOME to CAD_ROOT so as + to prevent it from breaking backward-compatibility. + +357 v3.6 rev 6 2/23/06 + Fixed a spurious "Error: end of file" message. + Corrected the configure.in once again because Tcl/Tk defines + TCL_INCLUDE_SPEC but *not*, stupidly enough, TK_INCLUDE_SPEC. + +356 v3.6 rev 5 2/21/06 + Added the Shift-Button-1 bindings to duplicate Button-2 + functions as an alternative to using "xcircuit -2". + Also: Added a flag bit to the line styles representing + square end caps. + +355 v3.6 rev 4 2/13/06 + Fixed an error with the LaTeX mode ".tex" output to correctly + handle the filename when the extension of the xcircuit file + is not the default ".ps". Also, changed the configure script + to add some other standard locations to the directory search + for tclConfig.sh and tkConfig.sh, and made use of the + TCL_INCLUDE_SPEC and TK_INCLUDE_SPEC from those files to set + the INC_SPECS definition. Thanks to John Rigg for pointing + out these problems with the Debian compile. + Also: Fixed a bug that can potentially cause XCircuit to + crash when a box is drawn. + +354 v3.6 rev 3 2/3/06 + Added a number of "undo" functions for minor things that had + been left unimplemented, including linewidth changes, scale + changes, style changes, and text justification and option + settings (flip invariance, latex mode, etc.). Thanks to Joel + Kuusk for pointing out the omissions. + +353 v3.6 rev 2 1/22/06 + Updated a number of changes from around version 3.5.3 that + broke the non-Tcl-based version of xcircuit (not exhaustively + tested). + +352 v3.6 rev 1 1/20/06 + Finally got around to correcting the crash backup behavior + so that xcircuit ignores crash backup files belonging to an + active process (i.e., another xcircuit currently running). + +351 v3.6 rev 0 1/7/06 + Restructured variables internally to acommodate multiple + layout pages. This is only a start, as currently new + windows have no callbacks created. + Also: Created an enhanced version of the "Make Matching + Symbol" routine, and created a new routine and menu selection + "SPICE to Symbol", which creates a symbol for, and link to, + a SPICE file containing a subcircuit definition. + Also: Longtime error: Corrected the quick screen intersection + check to include the schematic bounding box. Otherwise, when + only pin and info labels intersect the window, nothing is drawn. + +Version 3.5 (November 2005 to January 2006) +---------------------------------------------------------------------- +350 v3.5 rev 5 12/19/05 + Added command option "object <handle> library [<library>]" + where the final optional argument was previously unavailable. + If present, the final argument declares a new library for the + object. If not present, the number of the library containing + the object is returned. + Also: Corrected lib/tcl/symbol.tcl where the "%n" was missing + from the end of the subcircuit call statement. + +349 v3.5 rev 4 12/14/05 + Fixed an error in netlisting which causes the netlister to + write "X.." lines in the SPICE output of "trivial" symbols + like the "dot" object. + +348 v3.5 rev 3 12/13/05 + Fixed another fatal error in file writing due to having a + NULL filename. + Also: Revised the Wprintf() calls to accept variable + argument lists, rewrote the Tcl versions of W*printf() as + calls to a script rather than being hard-coded as a specific + Tk function. This allows me to rewrite the script equivalent + of Wprintf() to print to both the message widget and the + console output, so the console now gets a complete record of + warning, error, and informational messages produced by + xcircuit. + Also: Fixed two fatal errors with "Load Dependencies", one + which crashed xcircuit due to a typo in the Tcl code for + command "page links load", and the other which created an + infinite loop if loadfile() failed to load a file inside + the recursive call to "page links load". + +347 v3.5 rev 2 12/8/05 + Corrected a behavioral error in which xcircuit does not + generate netlist output for a symbol containing an info + label but no pins. Thanks to Herman Lee for pointing out + this problem. + Also: Corrected a problem in 3.5.1 in which xcircuit + changes filenames in a multi-schematic session to match + the top-level schematic. It ignored the setting of + "dmultiple", and thus would make changes without warning + when it generated the crash backup file, for example. + Also: Added a widget for managing multi-schematic file + writes, with a menu hook from "Files->Write All...". + Also: Changed the behavior of "page changes" to include + change counts of all descendents. Fixed the Tcl parsing + of the "page" command for certain options when a page is + specified in the command (e.g., "page 1 fit"). Modified + the "page changes" command so that the change count can + be altered, thus forcing a page to be recognized as either + modified or unmodified. + +346 v3.5 rev 1 11/21/05 + Separated the source code into distribution (version 3.4) and + development (version 3.5) branches, on the suggestion of + Zvezdan Petkovic. + Also: Added command option "page changes" which reports the + number of changes on a page. Modified some behavior so that + starting certain commands like "copy" does not increment the + number of changes, so that the command can be canceled without + xcircuit thinking that the page has been modified. + Also: Added command option "config search file|library <list>" + with a colon-separated list <list>, specifying the search order + on a specific set of directories. These lists are initially + null, and behavior remains the same as before while these lists + are null. A non-null search path overrides the default search + on the current working directory, and a non-null library search + path overrides the search on XCIRCUIT_LIB_DIR and the default + install directory path. Modified the library manager to use + search paths. + Also: Allow "library load <filename>" on a regular xcircuit + (.ps) file, which has the behavior of loading the objects from + the file without loading the pages themselves. + Also: Added command option "netlist get -hier" to generate + a slash-separated hierarchy using device names and indices. + Also: Fixed "netlist goto <name>" to accept the same syntax + that is produced by "netlist get -hier", and finished the coding + of the routine. + Also: Added command options "netlist select <netname>" and + "netlist position <netname>". + Also: Changed behavior of the "%" macro so that it also raises + the console to the top of the window. + Also: Added command option "netlist parse <mode>" (e.g., + "netlist parse spice") that allows some selective parsing from + a Tcl script. + Also: Created a script called "symbol.tcl" that replaces the + function of the "Make Matching Symbol" button in the xcircuit + menu, with a considerably fancier interface. + Also: Modified the command "color set" to accept color names. + +346 v3.5 rev 0 11/21/05 + This revision was not posted, but reflects changes made through + version 3.4 revision 10 that were removed from the "stable" + branch of the distribution. + 1. Changed the crash backup file name to include the process ID. + This is intended to prevent xcircuit process from treating a backup + file from another existing xcircuit process as a crash file to be + recovered, but the code is not yet finished. + 2. Enabled creation of parameters on a top-level page, and revised + the Tcl "param set" command to handle this case. + 3. Added a "page links sheet" option to allow querying "sheet A of B". + 4. Added a "page links load" option to allow symbols to specify which + file contains the schematic, and load these prior to writing a netlist. + +Version 3.4 (August 2005 to November 2005) +---------------------------------------------------------------------- +345 v3.4 rev 10 11/16/05 + Removed the problem with automatic generation of pin labels on a + symbol during a copy action in the schematic. + Also: Added doubly-protected backups to standard file writes. + This renames the existing file to filename + tilde ("~") so + that the file is not truncated if a crash happens during a + normal file write. + Also: Added patch files by Zvezdan Petkovic for proper + compilation on OpenBSD. + +344 v3.4 rev 9 11/14/05 + Applied (partially) a patch from Larry Doolittle that fixes a + pointer bug in the non-Tcl version, and allows compilation of + the non-Tcl version on a 64-bit system. + Also: Fixed the event mechanism to allow pages to be selected + in the page directory (otherwise, pages cannot be swapped). + Also: Fixed the Tcl "push" command so that "push selected" now + works, and clicking the "push" toolbar button when an object + is selected has the expected effect. + Also: Fixed the Tcl "label justify" command so that changing + vertical justification does not reset the horizontal justfication. + Also: Fixed the Tcl-to-xcircuit string conversion so that plain + text with spaces is handled as expected (thanks to Mark Martin + for pointing out this problem). + +343 v3.4 rev 8 11/10/05 + Changed an instance of "regsub" to make it backwardly compatible + to Tcl version 8.3; otherwise, xcircuit fails to start up + properly when linked to Tcl/Tk 8.3. + +342 v3.4 rev 7 10/28/05 + Corrected event handling of schematic/symbol association, + which was allowing xcircuit to return to "normal" mode while + on a library page, resulting in bizarre behavior, and preventing + the schematic/symbol association from being made. Thanks to + James Vernon for pointing out the problem. + +341 v3.4 rev 6 10/25/05 + Fixed bounding-box calculations on instance loads so that + instanced values of expression parameters are handled correctly + on file read-in. Also, corrected "resolveparams" to remove + cached expression results before writing a page to a file. + Also: Added component unnumbering feature (as written, only + for devices having the "idx" parameter). + +340 v3.4 rev 5 10/21/05 + Added command option "label replace", menu items "Text-> + Increment" and "Text->Decrement", and key bindings "i" and + "I" (respectively) to auto-increment (decrement) numerical + values inside text labels. As part of this, I also rewrote + and completed the Tcl list-to-XCircuit string conversion + routine. + Also: Fixed a bug reported by James Vernon due to accessing + free'd memory, which appears to be fatal under Cygwin but + not under Linux. + +339 v3.4 rev 4 10/19/05 + Added command option "library filename" and the ability to + save the first file from which a library page was loaded. + Also: Added the "page load -replace" and the ability to + load/save specific libraries by name. Changed the "File" + menu and the popup prompts to allow all of this to be done + from the GUI interface. + Also: Added more Cygwin handling to the Makefile process, + and tested the Cygwin compile and install. + +338 v3.4 rev 3 10/6/05 + Some fixes to things broken between versions 3.3 and 3.4: + Move "undo" stays on grid. Items being moved during move + and copy commands stay with the cursor through pans. + Button-3 now does the proper thing for cancellations + during move mode. + +337 v3.4 rev 2 10/6/05 + Refined and expanded the hierarchical element handle + notation to cover all commands accepting element handles. + This will now work for commands such as "element type". + Still, only "polygon points", "spline points", and + "instance center" commands translate point positions back + to the top level. + +336 v3.4 rev 1 10/5/05 + Fixed an error with finishing path edit operations, + added "internal units" type to the grid display types, + and implemented a (preliminary) hierarchical specification + for element handles that can be used with the "polygon + points" command to refer point positions back to the + top level. + +335 v3.4 rev 0 10/3/05 + Substantially revised the interface and input mechanism, + removing the remaining methods that were hard-coded to + various mouse buttons. Instead, I have implemented the + button "Hold" mechanism in a general-purpose manner that + also allows definitions of key hold bindings. I removed + many of the event modes, including all of the element + creation modes available from the GUI tool buttons, as + these are more obviously implemented by changing button + bindings. This allows the various modes to be switched + on and off, and allows wire drawing mode to be just one + of the modes rather than the default mode. Adding "wire", + "move", and "pan" modes as more-or-less obvious button + binding variations. Added ASCII85 and Flate encoding/ + decoding to the graphic read/write operations. Added + a "-2" option to the command-line invocation of xcircuit + to set mouse button bindings for 2-button mice. + +Version 3.3 (September 2004 to July 2005) +---------------------------------------------------------------------- +334 v3.3 rev 38 9/28/05 + Corrected multiple-button checking routine to look at + the event state only, not the button, as the button + entry is changed by some routines. This was preventing + the shift-button key bindings from working. + +333 v3.3 rev 37 9/20/05 + Corrected SPICE output to generate a line break and + continuation "+" character for wraparound lines. + +332 v3.3 rev 36 9/16/05 + Fixed an error with netlist output in which parameters are + not substituted if xcircuit is run in batch mode. + +331 v3.3 rev 35 9/15/05 + Fixed parameter indirection---parameter string was not + initialized on library read-in, causing a segfault. Also, + changed the behavior of ordered spice lines so that they + will be placed after any subcircuits are written, to avoid + nesting subcircuits. A syntax "spice@" has been added for + lines that really should go in front of everything (except + for the special title line #1). + +330 v3.3 rev 34 9/14/05 + Implemented "label latex" in the Tcl version, which was + missed in the move from Xt to Tcl, and because it is an + obscure function, was not noticed for some time. Thanks + to Eric West for bringing it to my attention. Also: + Applied a patch by Joerg Wunsch that prevents a segfault + when rotating a path element. + +329 v3.3 rev 33 9/8/05 + Corrected an error in netlisting that would incorrectly + identify empty parameter strings as the "idx" parameter. + Also, added a "-nowindow" switch to the UNIX command-line + invocation to allow xcircuit to be used as a filter (batch + process) without creating/displaying an X11 window. + +328 v3.3 rev 32 9/6/05 + Changed the handling of netlist writing from symbols, in + particular to avoid crashing on encountering unexpected + info label contents. Also: Added a "-replace" option to + file loads, that causes any object in a file to be + overridden by one in a library "master copy". Also: Revised + the "library make" command to allow an arbitrary number of + empty libraries to be created. + +327 v3.3 rev 31 8/10/05 + Fixed a problem with the graphic image handling in which graphic + images are saved to the output file if they exist, regardless of + whether or not they show up in the output page. Also fixed the + PPM reader to handle whitespace and newlines in the header + correctly, according to the PPM spec. + Also: Added revision information to the "welcome" + message in addition to the major.minor version. + Also: Some changes to the Makefile to properly handle + passing of linker flags in the shared vs. static compiles. + +326 v3.3 rev 30 7/28/05 + Fixed a problem with the startup TCL code that causes XCircuit + to fail to start if a parse error is found in the user's + ~/.Xdefaults file (even a completely unrelated parse error). + Thanks to Roland Roberts for the bug report (and, much earlier, + Romano Giannetti, although at the time I administered to the + symptoms, not the disease. + +325 v3.3 rev 29 7/22/05 + And yet more auto-numbering revisions. Ensure clearing of + device indices prior to both netlist output and auto-numbering. + Also, fixed parseinfo() to correctly handle the mode="" case. + +324 v3.3 rev 28 7/21/05 + More fixes to auto-numbering code ($#!@&). Appears to work + now for various cases, although I am not satisfied that it + covers all situations. One part of the fix forces xcircuit + to ignore all fixed component assignments when generating + flattened netlists. While this ensures that all component + numbers are unique, the output is not what might be expected, + especially if there is no hierarchy in the schematic. + Probably the parsing for fixed device numbers should *not* + be done by parseinfo() but should be handled separately, + under the assumption that this handles a limited number of + backwardly-compatible cases and that normally it should + expect to find "idx" and "class" parameters for each component. + +323 v3.3 rev 27 7/20/05 + Revamped the auto-numbering code (again!) to better handle + the "class" and "idx" parameter method, and make auto-numbering + independent of the netlist format (i.e., SPICE vs. pcb). + Device (component) name ("class") was moved from the object + structure to the Calllist structure (after all, if the class + is parameterized, then an instance may have a different class + from the object's default class), and this is generated directly + after generating the Calllist structure, since it is independent + of the netlist output format. + +322 v3.3 rev 26 7/19/05 + Further corrections to revision 20 code. Device classes are + now checked and updated for non-pcb devices (e.g., mosfets) + when doing autonumbering. Also: parameter setting works + for multiple selections; e.g., several transistors can be + selected at once and have width or length changed simultaneously + for all of them. Thanks to Carsten Thomas for the bug report + and feature request. + +322 v3.3 rev 25 7/18/05 + Finally logged into SourceForge and incorporated some of the + more recent patches found there. Includes a patch to + configure.in by Min Sik Kim, and a patch to fontfile.c by + Zunda. + +321 v3.3 rev 24 7/17/05 + Updated keybindings with the new function "Graphic", which + otherwise causes the help utility to crash. Thanks to John + Rigg for the bug report. + +320 v3.3 rev 23 7/15/05 + Added file load and save methods for the "graphic" element, + as well as undo/redo operations, a menu item for loading + graphic elements, and all essential operations. + +319 v3.3 rev 22 7/14/05 + Corrected broken file parsing from revision 21. Image data + is now read from "objectread" like everything else inside + the Setup block. + +318 v3.3 rev 21 7/13/05 + Fixed a bug introduced in revision 20. Also, started adding + the new basic element type "graphic", to handle inclusion and + placement of arbitrary graphic images. This will eventually + replace the buggy and cumbersome "background postscript" + rendering via ghostscript. + +317 v3.3 rev 20 7/8/05 + Changed the component auto-numbering so that all component + values are treated as base-36, to allow handling of non-numeric + component numbers. Also, the routine that determines the + number to assign will return the smallest unused integer + instead of (1 + (largest number found)) so that use of + non-numeric values doesn't cause the auto-numbering algorithm + to generate strangely large numbers. Also: The auto-numbering + algorithm now looks at the parameter "idx" if it cannot find + a "pcb"-style info-label. This allows non-pcb parts like + transistors in VLSI schematics to be auto-numbered. This is + really the preferred way to handle auto-numbering, and all + library parts ought to be updated to contain the "idx" parameter. + +316 v3.3 rev 19 6/28/05 + Resolved the issue with retaining the stack order of + parts through a delete-undo cycle, so that all previous + undo records point to the correct parts in the correct + order. This eliminates a lot of spurious error messages + coming from the undo mechanism. + Also: Resolved the issue with polygon/arc/spline/path + rotations, where rotations cannot be undone exactly due + to accumulating roundoff errors. The solution is simply + to treat the rotation as an edit for these element types. + Also: Fixed an error with label deletion. Labels that + are edited out of existance were not handled properly, + an egregious error that was somehow overlooked. + Also: Modified console.tcl script to withdraw the + console window on a window manager "close" request, + rather than exit the application. This bolsters + the end-user illusion that the console is a subsidiary + window of the layout, rather than vice versa. + +315 v3.3 rev 18 6/16/05 + Fixed an error reported by Benoit Bidoggia, in which + an attempt to clean up redundant font changes triggers + a crash becuase it has been passed the top-level instance + instead of NULL (NULL is necessary because this function + is called when reading an object definition, at which + point there are no instances). + +314 v3.3 rev 17 6/12/05 + Fixed another error that showed up in Uwe's schematic, + which is that the "test_insideness" algorithm fails if + the box is degenerate---which happens for labels that + are parameters set to a null string. + +313 v3.3 rev 16 6/10/05 + Corrected an error found by Uwe Zimmermann in which + xcircuit calls free() on an unallocated space when + destroying an object containing an indirect parameter. + Also: Added some experimental code replacing the + drawing functions with OpenGL. This can be compiled + in by passing "--with-opengl" to the "configure" + script. However, the code is currently unfinished. + +312 v3.3 rev 15 5/31/05 + Added another feature to the change of revision 14: + Info labels that have negative sequence numbers (e.g., + "spice-1:", "spice-2:", etc.) will be written after all + subcircuit and component output, whereas the usual positive + sequenced labels "spice1:", "spice2:", etc., will be written + before subcircuit and component output. Each sequenced line + is followed by a return character in the output. First and + last line of the netlist output is hard-coded (e.g., circuit + title and ".end" line in SPICE (see rev 5 comments)). + +311 v3.3 rev 14 5/27/05 + Changed behavior of netlist generation to allow (finally!) + info labels on a top-level schematic. These labels are + written verbatim into the output. Probably needs checks + to avoid attempting to process certain embedded escapes + like pins. . . + +310 v3.3 rev 13 4/08/05 + Fixed an error that missed recalulating the instance + bounding box after a text rejustification. + +309 v3.3 rev 12 3/29/05 + Changed behavior of the netlist connectivity highlight + function in response to a suggestion by Long Yang that + pin connection points should be hightlighted, the better + to show places where a net does not attach to a pin. + Also: Added a feature in response to a comment by John + Barry that error messages disappear when netlists are + saved if the netlist is not recreated. This feature + includes a checkbox in the Tcl wrapper that by default + forces regeneration of the netlist on each netlist file + write function. + + IN PROGRESS---Added "idx" to Pagedata; need to separate + areastruct.page from the actual printed page number. + This simplifies page re-ordering and allows schematic + libraries to be "hidden" among the rest of the pages. + xobjs.pages and areastruct.page will still refer to the + index into pagelist. + +308 v3.3 rev 11 3/12/05 + Fixed an error, pointed out by Long Yang and Svenn Bjerkem + in which xcircuit crashes when descending into an object. + This was due to out-of-bounds array addressing, and must + have been in the code for some time, but only shows up + on some compilers (Solaris?). + +307 v3.3 rev 10 2/27/05 + Fixed an error in the flattened netlist output that has + probably existed in most revisions of 3.3 to date, + where net names are not correctly passed down from + parent cell to child cell. Thanks to Mark Chang for + pointing out the error. + Also: Fixed a bug in the selection mechanism where + the selection is not NULLed prior to return from the + calling routine if no selections are found. + +306 v3.3 rev 9 2/5/05 + More changes to the selection mechanism. Selection + mechanism sorts polygons (wires) according to + distance of the nearest edit point. Previous + selection is always kept and compared against + current selection. "pick" is only advanced if the + selections are the same. Pointer position when + selecting a polygon to edit is restored from the + warped position after a button-3 cancel function. + Also: Added all edit functions to the "undo" + mechanism, as well as label creation. + +305 v3.3 rev 8 2/4/05 + Corrected several mistakes in the selection mechanism + that left pending (unfinished) events on the stack. + Also: Corrected a problem from rev. 7 that did not + register unselection events (key "x") with the undo + mechanism. + +304 v3.3 rev 7 2/1/05 + Revamped the selection mechanism (finally) to get + rid of the cumbersome "click to select or reject" + method. The new method picks one element, and + cycles through objects so that a different object + is selected on each button press, if several elements + are found at the pointer position. This method would + be equally unwieldy save for a change in the way + object instances are selected---the selection routine + recursively searches for elements inside objects that + are close to the pointer position (albeit with a wider + capture range than on the top level). This prevents + selecting an object instance with lots of white space + if the pointer is in the middle of the white space + (such as a frame or border object). + Also: Corrected the "Make Matching Symbol" callback. + Thanks to Mark Chang for pointing out the error. + +303 v3.3 rev 6 1/4/05 + Made additions to the "pcbout.tcl" script to support + SMD integrated circuits, and resistors and capacitors + (both chip and axial). "pkg" parameter added to the + Resistor and Capacitor parts in the "analoglib2" + library. + +302 v3.3 rev 5 12/16/04 + Corrected a fatal error in library copies if no valid + object is selected. Corrected a compile error (C++-like + syntax fails on many compilers). Added option to print + or not to print the ".end" statement at the end of a + SPICE deck. + +301 v3.3 rev 4 12/10/04 + Corrected an error that allows "temp label" pins to be + assigned the same name for different nets. The number + following "int" or "ext" on temp labels is now changed + to match the net number when referencing the label name, + if it is found to be different. + Also: Corrected another bug that causes a crash when + copying an edited parameter back to an object. The + data record for the PARAM_END structure was not zeroed. + This was okay previously because the data record was + unused. + +300 v3.3 rev 3 12/6/04 + Corrected a problem in which drawn subcircuits and + subcircuits declared with an "X.." in the info label + will share index numbers, by forcing SPICE output to + generate a devname of "X" for each drawn subcircuit + object. + Also: Changed the behavior so that device numbering + starts at zero, not one. Otherwise, if a device is + numbered zero on the drawing (e.g., by having the index + number entered by hand), xcircuit will generate a spurious + "duplicate part" warning. + +299 v3.3 rev 2 12/3/04 + Fixed an error (apparently from 3.3 rev 0) that caused + parameters to become hosed if changed (also causes program + crashes). + Also: Added handling of X11 button4 and button5 events for + (potential) binding to mouse scroll wheel motion. + +298 v3.3 rev 1 10/8/04 + Changed the behavior of the PCB netlist generator to be + more intelligent about finding the bottom of the + layout hierarchy. Also, corrected the netlist generator + where it allowed a global net to be merged into a local + net. + +297 v3.3 rev 0 9/28/04 + Replaced the "hspice" directory with Conrad Ziesler's + "spiceparser". The use of routine AddNTermModule() has + broken the spice input for now, although once fixed, the + results should be much improved. + Also, changed the handling of expression parameters so + that expression parameter results may be numeric, and + evaluated results are saved in the PostScript output as + instance values. When traversing the hierarchy during + redisplay, commands invoking a "selected" element will + pick up the object instance being rendered. The + combination of these changes allows the implementation + of several useful features such as counter-rotation and + displaying the name of an object within the object. + +Version 3.2 (January 2004 to September 2004) +---------------------------------------------------------------------- +296 v3.2 rev 27 9/17/04 + Quick fix to allow the non-Tcl code to compile; the + experimental "ngspice" code contains numerous Tcl references, + and although it does not depend on Tcl in principle, it is + easier just to disable the code for the non-Tcl compile. + It will not be missed. + Also: Changed the startup method from the hacked-up + redirection of $HOME to a standalone "wish"-like executable + that sets up "wish" to read in the .xcircuitrc file as its + startup script. + +295 v3.2 rev 26 9/7/04 + Changes based on comments from Dale Grover for correct + compilation/linking/installing under "Fink" on Mac OS-X + 10.3. + +294 v3.2 rev 25 9/6/04 + Fixed the wrapper code to ignore Tk's standard binding for + the Tab and Shift-Tab key events during label text input. + Otherwise, the window loses focus, which is an annoyance. + +293 v3.2 rev 24 8/25/04 + One major fix to the netlist code to insist that "updatenets" + is never run on a symbol. Otherwise, a circuit that has a + symbol that is not used anywhere will generate an error when + netlisting, resulting in no netlist. + Also, many minor fixes/enhancements to the TCL command-line + functions, mainly to support scripting. There is now a + script called "sue_xc.tcl" that supports the generation of + schematics from ".sue" files (in particular, this is to + allow xcircuit support for the IIT standard cell library; + see http://www.ece.iit.edu/~vlsi/scells/). + +292 v3.2 rev 23 8/18/04 + Rather important fix from back in revision 19, in which routine + "pointtonet" is supposed to merge crossing wires if they cross + on top of a subcell port. This is the method used to connect + crossing wires with the "dot" symbol, so it is rather important. + +291 v3.2 rev 22 6/21/04 + Added capability to the parameter selection mechanism to handle + Tcl-expression parameters of the form "lindex {list} <index>". + Such expressions will generate a listbox-type popup window in + which the user is prompted to select one of the choices in the + list. The parameter will be replaced by the same expression + but with <index> changed to reflect the index position of the + chosen parameter value. The way to make such parameters in the + first place is "parameter make expression <name> {lindex {list} + <index>}". To change the expression itself instead of selecting + a choice from the list, use "parameter set" instead of the GUI + interface. Thanks to Paul Surgeon for suggesting this method. + +289 v3.2 rev 21 5/58/04 + More quick fixes: Makefile error installing .tcl and .lps files + due to an error in Makefile.am; library object import now checks + library version and does not attempt to import libraries that may + be missing a dependency list. Distribution libraries updated to + make sure all of them will work with the library import function. + Tcl function "library <name> <options...>" changed to accept + "<name>" when library name is "Library: <name>". This makes more + sense, as it allows one to do, for instance: + "library load asg_spice" + "library asg_spice save asg_spice_new" + +288 v3.2 rev 20 5/26/04 + Quick fix to a bug pointed out by Petter Larsson, which must have + been in the code for some time, which checks for names incompatible + with the PostScript interpreter but then fails to make the change. + Also, cleaned out some source code copies left over from bus + representation implementation. + +287 v3.2 rev 19 5/20/04 + Finally got the bus notation handling into enough of a working + condition that I dare to post the distribution. In addition to + basic fixes, improvements include handling of buses and partial + buses with the "connectivity" function, and in particular, + handling of instance-specific labels throughout the netlist + (previously was only applicable to the netlist output). The + instance-specific labels allow the new "tap" object to work. + Added the tutorial file "buses.ps" to the examples directory. + +286 v3.2 rev 18 5/6/04 + Removed the requirement that the GUI must be in place prior + to startup. XCircuit can be embedded directly in another + application with or without its own GUI. Without the GUI, + it is necessary to create (and map) a "simple" window + (e.g., "simple .mytest.draw -bg white -width 700 -height 400"), + and then set the Tcl array variable "XCOps(window)" to be the + Tk pathname of this window. This creates a window into which + things can be drawn by Tcl command-line commands. To enable + button and key actions, it is necessary to do: + + bind .mywin.draw <ButtonPress> {xcircuit::standardaction %b down %s} + bind .mywin.draw <ButtonRelease> {xcircuit::standardaction %b up %s} + bind .mywin.draw <KeyPress> {xcircuit::standardaction %k key %s} + bind .mywin.draw <Enter> {focus %W} + + from the Tcl command line. It is also possible to rewrite the + wrapper script so that the whole GUI is present but rooted in a + location different from ".xcircuit". In that case, set the + variable "XCOps(top)" to the top-level window name before + invoking xcircuit::start. In either case, one must run "wish" + first, then load "xcircuit.so", create the appropriate Tk window + or windows, set the appropriate XCOps() variable, then do + xcircuit::start. + + Handling of bus notation is still unfinished in this (unreleased) + version, and probably breaks the schematic capture altogether. + This will be fixed prior to an actual distribution release. + +285 v3.2 rev 17 4/14/04 + Major enhancement: Handling of bus notation in netlists! + Also, Prohibit parameters from shadowing PostScript reserved + names and definitions in xcircps2.pro, as is done for object + names. Also, finally found and excised the bug that was + preventing correct comparison between object definitions on + read-in, which was introduced along with the parameter type- + promotion code. Fixed another bug which prevented + parameterizing position. And, fixed a bug which prevented + disabling flip invariance on text from the menu in the TCL + version. Also: made more convenient constructor/destructor + functions in elements.c, for general purpose use; these are + called from tclxcircuit.c. Also: Reimplemented "strdup" + as "Tcl_Strdup" in the TCL version; otherwise, there are + places where memory is allocated by strdup, bypassing TCL's + memory allocation, but free'd by Tcl_Free(). Also: modified + the library manager "library import" routine to load any + library instances of an object in addition to the object + itself. + +284 v3.2 rev 15 3/15/04 + Reinstated colors and other parameters as XDefaults-style options + in the TCL version using the Tk_GetOption() command. Changed + autoconf so that the TCL version is compiled by default (unless + not found, or explicitly disabled). Initial work on bus + notation parsing. + +283 v3.2 rev 14 3/03/04 + Added a library manager (often requested) for handling large + lists of parts. Allows objects to be imported from libraries + piecemeal. + +282 v3.2 rev 13 3/03/04 + Changed the TCL scripts and shell startup file so that the + README directions for a test execution prior to install actually + work as advertised. Also, finally found a way to force automake + to compile the tcl version with just "make" and "make install", + thus hopefully eliminating the greatest source of compile-time + woes. Re-implemented the .so file loading so that the reported + error is the real root cause error, not "file not found". Also: + removed Imakefile and all references to it. Also: Added a + menu item for the PCB layout generation. This is not yet + sourced by default. + +281 v3.2 rev 12 3/01/04 + A couple of fixes to bugs reported by Brek Miller. 1) Library + copy did not copy parameters correctly (missed both the "key" + and "which" entries), and 2) The object comparison mechanism + failed to correctly compare objects with parameters due to a + typo in the code. + +280 v3.2 rev 11 2/27/04 + Some changes to command functions and netlist output. Added + file lib/tcl/pcbout.tcl, a script that converts an xcircuit + schematic into a preliminary PCB layout. This is very spare + at the moment, to say the least; for instance, it only + supports 7400-series devices. But it's mostly proof-of- + concept. + +279 v3.2 rev 10 2/26/04 + Some Makefile/configure changes, esp. for systems like Debian + that do not find the Tcl/Tk include files. Also, rearranged + the menus so that "linewidth" commands (global and wire line- + width) are more obviously placed ("wire linewidth" duplicates + the "element border" entry). Thanks to Forrest Cook for this + suggestion. Also, rewrote the library load command in + xcircuit.tcl so that it prints the actual root cause error + instead of complaining about "file not found". Also, rewrote + and extended the "help" window in Tcl, making it entirely + script-driven from Tcl, and adding help text for each function. + This required adding Tcl command "bindkey" variant with no + arguments, which returns a list of all functions which can be + bound, and "bindkey -func <function>", which definitively + asserts that the argument is a function, not a key (because, + e.g., "Delete" is both a key name and a function). Also, + made XCF_Prompt (key "%") execute xcircuit::raiseconsole in + the TCL version (previously undefined in TCL). + +278 v3.2 rev 9 2/20/04 + Greatly expanded the undo mechanism, which now covers most of + the major xcircuit functions. This is definitely "beta test" + code. Also, renamed a number of functions and definitions to + be clear about the difference between an element and an + object (this confusion was left over from the really early + days of the program). + +277 v3.2 rev 8 2/11/04 + Improved the ghostscript rendering mechanism so that it can + handle (non-encapsulated) pages output from ghostview (which + includes some global state-setting commands). Also, greatly + improved the rendering by backgrounding the process. Xcircuit + draws a blank background and continues until ghostscript + reports that the page is finished, at which point the page + gets redrawn with the background. + +276 v3.2 rev 7 2/6/04 + Some fixes to the ASG and hspice routines; automake now checks + for g++-3 <stl> vs. the older <stl.h> header file and adjusts + accordingly. The hspice parser no longer produces files + netlist.sp and netlist-flat.sp. Compilation of ASG is now + disabled by default (and will be until it's stable. . .), and + requires "configure --enable-asg" to enable the module. + +275 v3.2 rev 6 2/5/04 + Added the ASG and hspice parser modules back in, with additions + to the master Makefile and configure script to support compiling + both modules into the xcircuit Tcl shared object library + xcircuit.so. + +274 v3.2 rev 5 1/29/04 + There was a 3.2 previously for the ASG implementation. This is + being done again from scratch, but I'm continuing the revision + numbers where I left off, at 5. Prior to adding ASG back in, + version 3.2 is in the process of implementing the "comprehensive + undo" function by creating the framework for running undo/redo + events and recasting the "delete" function into this framework. + More to be added in coming revisions. + +Version 3.1 (January 2003 to January 2004) +---------------------------------------------------------------------- +273 v3.1 rev 38 1/28/04 + Removed #ifdef SCHEMA from everything. This should have been + done long ago. . . Also, removed %%PageBoundingBox from the + output for encapsulated PostScript files, as this appears to + screw up output when including the drawing in a document, such + as a LaTeX file. Changed the behavior of the output dialog box + such that the page label is checked before writing, and the page + label is set to the filename if the label is still "Page #" + at the time the label is set. Fixed the behavior of selecting + fill and border styles, especially a critical error with fill + styles that would allow polygons to acquire an invalid state, + causing netlist problems and/or unmatching PostScript output. + Changed the selection behavior such that elements are not + unselected after border/fill/color changes. Fixed the behavior + of network connectivity highlighting to work with multi-page + schematics. Changed some event handling to let most button- + release events act on the mouse position on the previous + button press (this works for drawing wires and editing polygons, + but not for copying elements). Added "%N" escape to the + tag callback mechanism to allow all arguments to be passed to + the callback procedure as a list. Fixed marking of "Closed" + checkbox in the Tcl "Border" menu. + +272 v3.1 rev 37 1/23/04 + Preparing for XCircuit 3.2 (ASG). + Revised some of the code structure of netlist.c, added routines + NameToPosition(), from the ASG code (xcircuit-3.2), and + PortToPosition(), which is a variant thereof. Added the routine + ratsnest(), called by the command "netlist ratsnest" in the + Tcl console, which demonstrates some of the features required + for true ASG. Also: removes deleted items from the netlist + piecemeal, so that an ASG system can operate on an invalidated + netlist without encountering dereferenced pointers, or elements + which are not on the page they claim to be on. + Also: Fixed another bug similar to that in #271 where no space + was printed after the closing "}" in multipart strings appearing + in parameters, which equally bad results. + +271 v3.1 rev 36 1/21/04 + Added support for schematics spread over multiple pages. The + method is that all top-level pages that have the same page + label (object name) will be considered part of the same + schematic. One of the pages is considered the "master", or + "primary" page, and keeps the netlist/portlist/calllist for + all the pages. The other pages are the "slave" or "secondary" + pages, and refer to the master page for netlist information. + Also: Fixed a couple of bugs resulting from messing with + the parameter formats, namely 1) put back the check for + equal "which" value in varpcheck and varfcheck, and 2) added + a space after printing a null-string "()" parameter value. + +270 v3.1 rev 35 1/16/04 + Modified and completed support for expressions in parameters. + In the TCL version, this supports all TCL expressions. In the + non-TCL version, it allows simple character strings to be used + in parameters. The expressions are not translated into + PostScript; the PostScript output records the expression, which + is unused, and the last evaluated result, which is taken to be + the parameter value. Cleaned up more code for numeric and + indirect parameters, and added TCL options "-verbatim" and + "-indirect" to the "parameter" command to facilitate handling + indirect and expression parameters. + +269 v3.1 rev 34 1/9/04 + Cleaned up and finished most of the stuff having to do with + numeric parameters, parameters promoted from numeric to string + types, parameters on a top-level page, and indirectly-referenced + parameters. Also: Tcl variables moved into a single array. + Also: Some support for arithmetic expressions in parameters. + Very rudimentary at present. + +268 v3.1 rev 33 12/16/03 + Fixed the text justification routine in TCL ("label justify ..."). + Thanks to Petter Larsson for the bug report. Fixed two problems + with "page clear"---one reported by Brek Miller, showing that + the free_single() routine was removing parameters from the + referenced object, not the instance, and one reported by Joel + Kuusk, where the Tcl "clear page" command allows clearing a page + while editing an object instance in the hierarchy of that page, + causing an immediate crash. Finally, corrected prototypes.h + for routines setjustbit() and setpinjustbit() for the non-Tcl + compile, left in an improper state in revision 32. Thanks to + Dave Armbruster for this bug report. + +267 v3.1 rev 32 12/10/03 + Fixes to the linewidth/border width changing from the menu in the + TCL version, as pointed out by Rob Olsen. Also, on suggestion from + Makram Mansour, added LaTeX label handling. + +266 v3.1 rev 31 12/08/03 + Three fixes from bug reports by Bliss Carkhuff: "page save" returns + TCL_OK rather than an undefined value, parameter entry requires + exact match to keywords to get text escapes such as "underline", and + substring parameter creation corrected for creating parameters in + the middle of a label. Page save error also pointed out by Mark + Martin, and Rob Olsen who additionally noted the additional error + in linewidth selection (which has also been fixed). + +265 v3.1 rev 30 12/01/03 + Made another change to the output such that all objects used on + all pages are output first, inside a PostScript DSC block + "DocumentSetup", followed by all the pages. This modification + allows viewers like ghostview to figure out that these objects + may be used by any page, and prevents errors that occur when + skipping pages forwards or backwards in the viewer. + +264 v3.1 rev 29 11/26/03 + In response to Romano Giannetti, fixed the bounding box + routines so that EPS files are handled the way they used to be. + The only thing required was to set the overall bounding box to + remove the 1" margins; the page bounding boxes remain the same, + and ghostscript, ghostview, and EPS insertions into LaTeX + documents all appear to be handled correctly. Also, added the + "override" commands to the TCL interface, although to match the + rest of the TCL syntax, these have been changed to "library + override", "loadfont override", etc. + +263 v3.1 rev 28 11/19/03 + Changed the way XCircuit handles embedded bounding boxes + and does page scaling and translation in the output. + Removed the "offsets" comment line from the output and + changed it to a PostScript translation, which means that + all the positional values in the PostScript output on a + top-level page are all in xcircuit internal units, without + offset, and are therefore invariant with scale, page size, + etc. When an embedded bounding box is present, xcircuit + translates the output such that the bounding box is centered + on the page. If "auto-scale" is selected, then the output + is scaled such that the bounding box fits centered on the + page with 1" margins minimum. + +262 v3.1 rev 27 11/16/03 + Extended the parameter method to include parameters passed + inherited by an object instance from its parent. Fixed the + "make object" method such that parameters are copied into the + new object (as yet, the new object does not correctly inherit + the parameter from the parent). Added preliminary support + for promoting numerical parameters to strings. + +261 v3.1 rev 26 11/11/03 + More fixes and extensions related to parameter key:value + pairs. Added a popup window in the Tcl version for + editing substring parameters of an object instance, + including functions for formatting ASCII strings from + string parameters and vice versa. Added a function + for the "Add New Color" button in the Tcl version, which + was missing. Command syntax "color <idx>" changed to + "color set <idx>" and option "color add <name>" added. + +260 v3.1 rev 25 11/6/02 + Changed parameter handling to a key:value pair model. + Revised built-in libraries to take advantage of this + method, using keys like "value", "units", "length", + "width", etc. Expanded and revised the "parameter" + command in Tcl-based XCircuit to provide the key:value + information, as well as providing parameter information + down one level in the hierarchy for an object instance + (using the key "-forward" as the last argument to the + "parameter" command). Added command option "type" to + list parameter types, or to list parameters by type. + Finished code for removing parameters. + +259 v3.1 rev 24 9/19/03 + Added feature (macro "V" key) to make a library virtual + instance from an object selected on a page. This allows + users to make temporary copies of parameterized (or + rotated, or flipped) objects for quick retrieval. + Several corrections: Xcircuit now checks for symbols + associated with schematics and saves them, even if the + symbols are not used in any schematic. This prevents + associations from being lost after a save/quit/load + cycle in an unfinished schematic. Also: Snap and + polygon edit will invalidate the netlist. Also: "Make + matching symbol" reports an error if the schematic page + has an invalid name. + +258 v3.1 rev 23 9/15/03 + Corrected revision 22, which duplicated the NameToObject + routine by mistake. Also added TCL wrapper key bindings + for function keys "Page Up" and "Page Down" to increment + or decrement the page number (helps with large numbers of + schematic pages). + +257 v3.1 rev 22 9/10/03 + Moved routine NameToObject from tclxcircuit.c to schema.c, + since it is used by the non-Tcl based code and prevents + compiling the non-Tcl version. Thanks to Swee-Ann Teo for + pointing out the error. + +256 v3.1 rev 21 9/5/03 + Fixed a problem with the Tcl calls to the zoom functions, + which were passing a NULL event structure. Thanks to Ed + Casas for pointing out this error. Also: Fixed the + Makefile.am file for compilation under Cygwin, which was + presented the wrong name for menudep.o. Thanks to Carlos + Davila for pointing out this error. + +255 v3.1 rev 20 9/4/03 + Changed key and button handling in Tcl to work using the Tk + "bind" function, with the usual behavior being bound to the + "standardaction" command. Standard actions can be rebound + using the xcircuit "bindkey" command, or keys can be bound + to Tcl procedures using the Tk "bind" command. + +254 v3.1 rev 19 8/12/03 + Required reconfiguring without Tcl once to generate the + "Makefile.in" in the Xw directory; otherwise, automake 1.7 + becomes a requirement. + +253 v3.1 rev 18 8/6/03 + A fix to the output, correcting the page numbering in the + PostScript page headers. The incorrect numbering can cause + some printers to lock up. . . + +252 v3.1 rev 17 7/14/03 + Thanks to Ted Roth for fixing my rather too-hasty fix of + revision 16. Also: Some fixes to the autoconf script (also + from Ted Roth), and autoconf script updated to work with the + latest versions of autoconf/automake/aclocal. + +251 v3.1 rev 16 7/08/03 + Fix to "x" and "y" output for .sim format---thanks to Kath Shih + for pointing out this error. + +250 v3.1 rev 14 5/05/03 + Incorporated a patch from Max Horn to remove all references + to "malloc.h" from the headers, and fix the configuration file + for Mac OS-X compilation. + +249 v3.1 rev 13 4/29/03 + Fixed a problem due to automatic search for schematics which + prevents a single page from being saved. The output window + now shows both "schematics" and "subcircuits" with checkboxes; + pushing "schematics" unlinks top-level schematics, and pushing + "subcircuits" can prevent subcircuits from being saved along + with the file. In either case, the filename is blanked out + so the user will not mistakenly overwrite the original file + with a truncated one. In conjunction with this method, the + Tcl "page links" command has been extended to include the + options "independent", "dependent", "total", "pagedependent", + and "all". Eventually, I expect to add an additional option + "list" to list page names instead of simply enumerating them. + Thanks to Mark Jones for pointing out this error. + +248 v3.1 rev 12 4/14/03 + Fixed the PostScript background rendering, which was only + broken because of a broken implementation of ghostscript + (version 6.5). + +247 v3.1 rev 10 3/21/03 + Replaced TkCon with the version used with magic, fixing a + minor issue with handling backslash escape sequences. + +246 v3.1 rev 9 2/26/03 + Fixed the install for revision 8, which failed to run the + xcircuit.tcl script through the m4 preprocessor. Also, on + recommendation of Mark Jones, added a warning message when + pins exist on a symbol which do not exist in the associated + schematic. + +245 v3.1 rev 8 2/23/03 + Resolved numerous issues with cross-application methods. + Overloaded the "label" Tcl procedure to accept both xcircuit + and Tcl syntax, and removed the "bgerror.tcl" file. + Added procedures for calling netgen, IRSIM, and magic while + running XCircuit. + +244 v3.1 rev 5 2/19/03 + Fixed (for the third time(!)) occurrences of "getline" which + should have been changed to "setline". Fixed the toolbar + widget so that it recomputes its width when the window size + changes, and so that it does not squeeze the height of the + bottom message bar. + +243 v3.1 rev 4 2/12/03 + Added handling of "va_copy" to the configuration script for + systems which do not define it. Also: Added "%x" and "%y" + escapes to the info label syntax, for writing positional + information to the output (helps LVS programs like "netgen" + trace back errors to the schematic). Split the "Manifest" + file into "CHANGES" and "TODO" and started adding revision + numbers to the change log entries to match the revision + number on the website download page. + +242 v3.1 rev 3 2/10/03 + Added Tcl handling of the string parameter insertion via a + popup prompt. + +241 v3.1 rev 2 2/04/03 + Traced the "No per display information" error to use of an Xt + function (XtDispatchEvent()); replaced with Tk_HandleEvent(). + +240 v3.1 rev 1 2/03/03 + Fixed numerous problems with the Tcl-based version, and added + several missing functions (such as the select filter, and + handling keystroke <return> in the filelist widget). + +239 v3.1 rev 0 1/24/03 + Finished preliminary version of Tcl-based xcircuit. Relocated + runtime files back to (default) "/usr/local/lib" (instead of + autoconf's default $datadir "/usr/local/share"). Threw in + tkcon.tcl for compatibility with magic/irsim/netgen and recast + fprintf() as macro Fprintf(), which calls "tcl_printf()" in + the Tcl version and "fprintf()" in the other versions. Added + command-line function "-exec <file>" to the Tcl version for + running in batch mode (or alternately, just to bypass the + default startup file). + +Version 3.0 (June 2002 to January 2003) +---------------------------------------------------------------------- +238 v3.0 1/15/03 + On advice from Zhengdao Wang, changed the postscript header to + draw "opaque" styles as solid color, not stipples. All fill + styles except for white (empty) are made opaque by default and + fill style white is made transparent by default. The "opaque" + menu button can set the non-default behavior. + Also: Added a file loading command to the python and + non-interpreter command-line interfaces. + +237 v3.0 11/25/02 + Cleaned up some code with respect to 64-bit pointers, checking + for the size of pointers in "configure", and setting the proper + integer type for pointers in xcircuit.h. Should compile cleanly + on 64-bit systems without the "-taso" switch (which doesn't + exist for Linux/alpha systems). + +236 v3.0 9/23/02 + Added pixmap image handling to Tk/Tcl, and removed SWIG from + the "make" process. Configure option "--enable-wrapper" changed + to "--enable-tcl", "make wrapper" changed to "make tcl", and + "make install-wrapper" changed to "make install-tcl". Added + the toolbar and associated functions. Added "netlist" function + to Tcl for generic netlist handling. Fixed numerous errors in + the Tcl callbacks. Tcl functionality is now about 95% of what + it should be. Non-Tcl version has not been affected by these + changes. + +235) v3.0 7/17/02 + Several bug fixes for bugs reported by Massimo Gaspari (see + below). + +234) v3.0 7/08/02 + Fixed bug in the Python "bind" command such that keys not + bound to macros return an xcircuit error, not a Python error + (bug reported by Bob Paddock). Also fixed a bug reported by + Petter Larsson <f97-pla@nada.kth.se> in which the result of + getenv("XCIRCUIT_LIB_DIR") is not check for a NULL value + when executed from (any) interpreter. + +233) v3.0 7/03/02 + Several bug fixes for parameter-functionality bugs found by + Massimo Gaspari <gaspari@tin.it>. Changes are relatively minor + and not worth inducing a version number change. + +232) v3.0 6/24/02 + Abount 90% of the Tcl functionality necessary to duplicate all + existing functions has been completed. This makes the Tcl-wrapped + version useable, but experimental, and a bit crash-prone. The + command set it written up in "README.Tcl". Compiling involves + doing "configure --enable-wrapper" followed by "make wrapper" + and "make install-wrapper". Otherwise, the standard "configure" + and "make" results in the standard version of xcircuit. + +Version 2.5 (November 2001 to June 2002) +---------------------------------------------------------------------- +231) v2.5.5 5/21/02 + Started on the Tcl-wrapped version of XCircuit. Currently + this is just a big mess. I am posting it to the distribution + with all the wrapper stuff disabled and no instructions on how + to compile it, mainly so I don't have to keep making sure that + bug fixes are reflected in both versions. + +230) v2.5.4 5/14/02 + Revised the CvtStringToPixel so that it satisfies (or should + satisfy) all X servers doing 8 bpp, even those that return + bogus values on XLookupColor(). Previous "fix" had disabled + private colormap installation. + Also: Improved "gettext.py" to deal with tabs and page breaks, + and takes optional values for maximum lines per page and font + to use. Fixed a bug in "pagebbox.py" and also a related bug + which clipped color values to size short when set by "setattr" + in Python. + +229) v2.5.4 5/10/02 + Fixed a bug in which XCIRCUIT_LIB_DIR must be defined or the + program will crash. Also: Added text split and join functions, + and text "up" and "down", mapped to the Up and Down arrow keys. + +228) v2.5.4 5/09/02 + Changed the format of the output of the Python netlist() function + to better facilitate flattened netlists. Nets are passed by + number and associated to names in a separate dictionary. This + allows names to be changed (as required when flattening) without + altering the netlist. Otherwise, it becomes a big mess. The + new format ends up being smaller than the original. "flatspice.py" + has not yet been completed, though. + +227) v2.5.4 5/07/02 + Repaired some problems with the Python netlist() function, and + wrote a working version of "spice.py". Will replace the + internal functions when the "sim" and "pcb" scripts are written. + +226) v2.5.4 4/29/02 + Various changes in response to bug reports: Fixed library and + page object exchange, PCB infolabels on quad parts. Seg fault + due to missing code in "unmakenumericalp" has been worked around, + but the routine still needs to be finished. Patched filelist.c + to query result of stat(). Fixed error with XQueryColors in + 8-bit pseudocolor mode. + +225) v2.5.4 4/26/02 + Got rid of the "passive grab" action, which seems to be the root + cause of the video screen blanking on some systems. Eventually + discovered that "XtAddEventHandler" doesn't work for ButtonMotion + if it's called AFTER the button has already been pressed. With + this fact in hand, it was easy to avoid all the Add/Remove calls + and just add the event handler once, at the beginning. + +224) v2.5.4 4/19/02 + Replaced the top-level object with a top-level instance, with + all the ensuing fallout. The resulting code is much cleaner. + +223) v2.5.4 3/25/02 + Fixed the problem of parts being auto-deleted by the netlister + pointed out by Jeremy Brown. Also: Fixed a problem found by + Bob Paddock in which label segments are miscounted on output; + apparently, this only happens using the "gettext" script. + +222) v2.5.4 3/21/02 + Changed library structure so that every object gets an instance. + This precipitated many code changes. Along the way I fixed up + a bunch of minor errors, too many to list. Bounding boxes in + the PostScript output ("bbox" entry) have become obsolete, + except for font files, where the bounding box is not necessarily + coincident with its contents. + +221) v2.5.4 3/19/02 + Added key binding for "pin global" (key "G"), which was + documented but was not actually in the program. Thanks to + Jeremy Brown (jhbrown@ai.mit.edu) for pointing this out. + Also: On another suggestion of Jeremy's, added a scrollbar + to the help window. Along the same lines, cleaned up the + "file read" window so that the pixmap is never shorter than + the viewport. Fixed a small error with PostScript background + rendering---newline before "end_insert" avoids problems with + binary-format PostScript. Changed default key binding for + BackSpace to equal behavior of Delete. This seems to be what + most people expect and/or want as default behavior. + +220) v2.5.4 3/12/02 + Implemented instance-defined bounding boxes and cleaned up a + lot of stuff related to bounding boxes. This was needed to + properly implement the new "libinst" method described below. + Also: Altered the connectivity highlight function so that it + retains the number of the highlighted net in the netlist, and + continues to display the highlight through page changes and + expose events. Fixed a bug in the PCB netlister. + +219) v2.5.3 2/27/02 + Fixed a few minor inconsistencies related to color allocation. + Also: Implemented a "select previous" command, an undo command + for selections. Third mouse button function ("Escape") will + unselect anything that is selected, but if nothing is selected, + it will retrieve the last selection. Page/object changes + destroy the previous selection record. Also: Added intanced + scale and rotation values to the "libinst" record (values are + optional). This allows, for instance, the "arrowhead90" object + to be replaced by an instance of the original "arrowhead" + rotated by 90 degrees. All libraries updated to include + useful instantiations of objects rotated by 90 degrees: + arrowhead, arrow, circle, jumper, and all of the analoglib2 + objects which allow instanced rotation and justification of + their parameter value labels. + +218) v2.5.3 2/26/02 + Bug fixes to incremental netlisting. Also: Separated the loading + of GUI colors from that for layout colors. The schematic capture + was re-using SNAPCOLOR, AUXCOLOR, and BBOXCOLOR, which causes bad + effects if one attempts to change these values in the X defaults. + Re-used GUI colors were not necessarily duplicated or available + in the layout color palette, which was also confusing. Also: + environment variable XCIRCUIT_LIB_DIR now applies to the search + for the startup script. This enables xcircuit to be tested prior + to installation by doing "setenv XCIRCUIT_LIB_DIR ./lib" in the + top-level source directory. + +217) v2.5.3 1/30/02 + Changed the behavior of the PostScript background so that it scales, + rotates, and translates with output selections (Landscape vs. Portrait, + and vs. Output Scale), so the behavior is what would be expected. Still + allows only one background image per page, though, and the PostScript + image can't be scaled, rotated, and translated independently of the rest + of the drawing (those things must be done to the image prior to loading). + +216) v2.5.3 1/3/02 + Minor bugfixes: variable reading (varfscan, varpscan) requires skip + over whitespace. Netlist requires reinstating routine nearpoint() + because matrix transformations have roundoff errors and pin positions + should not be compared exactly. Updated Copyrights to 2002. Netlist + generation has been confirmed on a large schematic design. + +215) v2.5.3 1/1/02 + First cut at incremental netlisting---implemented a scheme in which + netlists are kept after being generated, until they are invalidated + or the object is destroyed. This scheme allows the netlist structure + to be queried at any time. Netlist creation is independent of the + netlist mode, as it should have been to begin with. + +215) v2.5.2 12/26/01 + Correction to duplicate object code makes sure that schematic/symbol + association does not get destroyed along with the duplicate object! + + Also: Applied Holger Vogt's patches to configure.in for proper + compilation under Cygwin. + +214) v2.5.2 12/15/01 + XCircuit now allows pin labels to be parameterized, treating them + as an instance-dependent label. While this does not alter the + SPICE and sim netlists, it allows (for example) quad parts such + as four NAND gates of a 7400 chip, each having its own unique + pinout but sharing the same object. + + Also: To go with the pin labels, added a method for generating + "virtual copies" of an object to appear on a library page ("V" + key from the library page). The virtual copy is a different + instance of the object, and can take different parameters. + Started on library "quadparts" with 7400-series pinouts to + facilitate use of the new feature with PCB netlisting. + +213) v2.5.1 12/06/01 + Revised the routines that deal with duplicate objects. New routines + prevent propagation of appended underscores (used to differentiate + between objects with the same name but different structure). The + major change is that a list of aliases is kept for objects with the + same structure but different names, so there is no confusion through + the process of reading the library. When the loading is done, the + aliases are removed and the names are cleaned up. + + Also: Switched the copyright to GPL for better compatibility with + other open-source tools, and because it's the Right Thing To Do. + +212) v2.5.0 11/28/01 + Removed an ill-conceived routine which would delete duplicate + copies of an object even if the names were different. This action + can give rise to very bad inconsistencies. A better idea would be + to try to "clean up" leading underscores whenever an object with + a leading underscore is deleted. However, this is a minor point. + + Also: Fixed a string overrun bug in charreport(). + +211) v2.5.0 11/16/01 + Finally (!) added support for parameterized values other than + label (sub)strings. This includes parameterization of all + element values except color (which is handled by an inheritance + model). Includes parameterization of: point position (x, y, or + both), line style, linewidth, scale, rotation, label justification, + and arc radius, minor axis, and endpoint angles. Includes support + loading, saving, displaying, printing, and editing. + +Version 2.4 (November 2001) +---------------------------------------------------------------------- +210) v2.4.0 11/14/01 + Added python script "pagebbox.py" to create standard page-size + bounding boxes (request from Bob Paddock). Along with this, + I updated the python code to handle colors by name or RGB + components, rather than by index, which is visual-dependent. + +209) v2.4.0 11/12/01 + Bug fixes to 2.4.0: Fallback resources string must be null- + terminated, added 2 remaining fallback resources that are + not taken care of by the XtGetApplicationResources() routine, + and changed XtAddConverter to XtAppAddConverter. I hope that + the application-specific references will prevent problems + with the timeout functions, and maybe with input focus as well. + + Also: Fixed type casting of values retrieved from the message3 + widget---values are type "Dimension" and "Position" (usually + defined as unsigned short and short, respectively), not int. + Causes errors under Solaris and probably other systems, too. + +208) v2.4.0 11/09/01 + Switched to a new method for defining rotation. Rotation in + xcircuit is now given in degrees, which matches the PostScript + output. Flipping is done in the obvious way by declaring a + negative scale value (which is applied only to the X component + in the transformation matrix; Y is always positive). Lookup + tables for sines and cosines are replaced by the math library + functions, which presumably are fast enough not to show any + performance hit on most machines. The redefinition of the + PostScript prologue prompts the move to a new minor version + number. Rotation is still an integer value, so the minimum + rotation increment is 1 degree. + + Also: Fixed an error in the PostScript prolog in which text + flip invariance was incorrectly implemented after the addition + of text kerning & scaling methods. Fixed another error in which + XCircuit and PostScript disagree about text orientation due to + roundoff errors. Matrix values must be compared to some epsilon, + not zero, to determine when the orientation is 90 or 270 degrees. + epsilon = 1e-9 works fine. + + Also: Changed certain Xt routines to include XtAppContext in the + hope of avoiding the problem with the TimeOut function conflicting + with other X11 programs (namely, screensavers). Hopefully the + addition of fallback_resources to XtOpenApplication will prevent + problems with the X defaults when the X defaults file cannot be + found. + +Version 2.3 (May 2001 to November 2001) +---------------------------------------------------------------------- +208) v2.3.6 11/05/01 + Added rudimentary "edit-in-place". Currently, this is a bit odd, + because the hierarchy above the object is rotated to match the + "natural" orientation of the object, rather than the other way + around. This should be fixed by allowing rotation and flips to + the top-level page (keep the transformation matrix for the page + rather than just the scale and position). Skewing of the grid + due to rotations is a can of worms, though. Probably rotating + to the nearest 90 degrees would suffice for most purposes. + Edit-in-Place is turned on by default. It can be turned off if + the extra drawing clutters the window. + +207) v2.3.6 11/01/01 + Fixed a long-standing error in which the "rejustify" routine + was giving labels invalid "justify" bit fields. Fixed a problem + with the "visible pins" in which the visibility flag would always + be reset by a rejustification of the label. + + Also: Removed the ":n" suffix from pages in multiple-page files + with the same name. The addition of the suffix was screwing up + the association of symbols to schematics on file reads, and it + seems to work fine without it. Some attempt is made to enforce + unique names for pages associated to symbols, but it seems to + work correctly whether or not names are unique. + + Also: Fixed an error in string parameter deletion, and added + a call to mergestring() after deletestring() to connect any + divided text. + +206) v2.3.6 10/25/01 + Revamped the file list window on the suggestion of Zhengdao + to highlight files that match the expected file extension. + Extended this idea to include a "file filter" which displays + only those files with matching extensions. This feature can + be turned off by clicking a toggle button in case a file with + an unusual name or extension cannot be seen. + + Also: Added a flag to the label justification value which + allows pins to be seen on hierarchical levels other than the + top. Changes to the prolog prompted the change to subversion + 6 although the change is fully backward-compatible. Thanks + to Bob Paddock for the suggestion. + +205) v2.3.5 10/24/01 + Fixed a netlisting bug pointed out by Bryce Denny in which the + layer ordering of label vs. polygon can cause the label to not + be associated with the network under it. This led me to + discover another bug in which a label position would update the + netlist properly but the actual label itself would not be added + to the netlist (the only apparent consequence is that the label + is not hightlighted during a connectivity check). + + Also: Fixed the behavior of the .xcircuitrc file loading so that + keys can be rebound from the file. Added Python commands for + pan and zoom, and wrote an example script which rebinds keys "Z" + and "z" to a python function which combines the pan and zoom. + Separated zoom functions between those with and without screen + refresh. + +204) v2.3.4 10/22/01 + Fixed some buggy behavior with respect to loading and setting + default fonts in .xcircuitrc and xcstartup.py. Thanks to Jeremy + Braun (jtbraun@MIT.EDU) for reporting these errors in detail. + Also: Fixed a missing requirement in checking object name + syntax. A PostScript name must be a string which cannot be + interpreted as a number. Thus, "+9" and "1E9" are illegal + names. Thanks to Bob Paddock (bpaddock@csonline.net) for + reporting this bug. + + Also: Changed behavior with respect to environtment variables, + allowing "TMPDIR" to set the temporary directory and allowing + an override of the "XAPPLRESDIR" directory. Added a list of + environment variables used by xcircuit to the manual page. + + Also: Revised the tempfile mechanism once again to include a + check on the number of times a file has been modified; heavy + modification will induce a temp-file save even if the timer + has not expired. + +203) v2.3.4 10/19/01 + Implemented a "changed" file mechanism which checks for changes + to pages and objects and queries for confirmation if there are + unsaved changes upon quitting. Changed filename behavior so that + all filenames have their own malloc'd space, instead of sharing + filenames. Extended file backup to include different filenames + on different pages. Added a toggle box on the output popup + window so that a page can be unlinked from a multipage file, + and displays the number of pages in the file. Added the simple + popup window (no text entry) to the list of python calls. + +202) v2.3.4 10/18/01 + Fixed the crash file recovery so that ONLY the given crash file + can be loaded (load and cancel are the only choices). Also, + the actual temp file name is hidden from view, and the original + filename is recovered from the "%%Title:" header line. + Also: Fixed the problem in which startwire() was called after + a popup window button was selected. + +201) v2.3.4 9/18/01 + Names of pages added to the library and page directories. + Thanks to Bob Paddock <bpaddock@csonline.net> for suggesting + the feature. + + Also: Updated "configure.in" to check for the infamous python + version 1.5, and disable the python interface if found. + +200) v2.3.4 9/10/01 + RPM package makefile fixes (thanks to Alex Habig + <habig@neutrino.d.umn.edu>). Also: changed undelete() to + xc_undelete() to avoid conflict with OpenBSD/FreeBSD system + calls. Thanks to Mike Andrews <mikea@mikea.ath.cx> for + bringing this to my attention. + +200) v2.3.4 8/12/01 + Implemented a Python interface into the netlist structures. + Set up for use of Python scripts to generate all netlist + output, as well as dealing with non-PostScript format input. + + Also: fixed a problem with crash recovery caused by the + program exiting on call to Py_Exit. Improved the crash + recovery mechanism to automatically find crash files on + startup, and prompt user to load. + + Also: added more Python functions, for page clear, page change, + add key bindings to Python functions, and create menu buttons + with callbacks to Python functions. Added Python functions for + calling a popup prompt, file browser. + +198) v2.3.3 7/27/01 + Fixed more man page problems with the make process. Added + default values for Python libraries when the Python Makefile + can't be found. Made the rcfile parsing more robust, esp. + so it doesn't crash if it attempts to read a non-script file. + +197) v2.3.3 7/26/01 + Added auto-numbering of component numbers using netlist mode + "idxpcb". This works for all component numbering (including + SPICE and sim) where the component number is parameterized and + denoted by a question mark ("?"). Thanks to Lapo Pieri + <lapo@iroe.fi.cnr.it> for the suggestion and some code to + implement the function outside of xcircuit. + + Also: Fixed Imakefile so that imake uses m4 to generate the + man page correctly on "make install.man". + +196) v2.3.3 7/18/01 + Fixed two errors, one which split global nets in hierarchical PCB + netlists, the other which failed to find nested parameters. + +195) v2.3.3 7/17/01 + Some changes to the GNU autoconf (with much help from Albert + Chin) for correct parsing of the path to python, avoidance of + errors when generating the man page, and re-instantiation of + the keyboard input focus workaround. + + Also: Removed the behavior of turning pins back into labels + when creating objects or moving labels between pages or + objects. Added behavior that if a pin is removed (or moved + out of an object), and the pin has a unique string, any pin + on the corresponding symbol/schematic will revert to a plain + label. This was the intended behavior. + +194) v2.3.3 7/09/01 + Added label strings to the Python setattr() command. Added a + getcursor() command to Python. Created a python script called + "gettext(filename)" which creates an xcircuit label from the + contents of an ASCII file. + +193) v2.3.3 7/06/01 + Quick fix to an error in interpreting key names for key bindings. + +192) v2.3.3 7/05/01 + Added environment variable XAPPLRESDIR so that application + defaults come from the location specified by the configure script, + not /usr/lib/X11/app-defaults. This also allows app-defaults to + be used even if xcircuit is compiled without root privileges. + The configure script was modified to compile in Xpm, if it can + be found. + +191) v2.3.3 7/02/01 + Changed netlist behavior so that wires only connect at endpoints + (although an endpoint may attach TO any location along a segment + of another wire). Optimized a few routines for speed. Netlist + output now changes symbol font and standard font "mu" (i.e., + micro) to "u". Fixed a bug preventing correct loading of files + containing multi-part strings as parameters. + +190) v2.3.3 6/28/01 + Cleaned up some behavior with respect to component numbering, + including fixing numbering for flattened SPICE output. Added + a PCB library for generic IC parts. + +189) v2.3.3 6/27/01 + Corrected the parseinfo() routine so that it correctly uses the + symbol, not the schematic, to pick up information about a pcb + name. Changed some of the library objects (namely the passive + devices like Resistor and Capacitor) so that pin names are PCB- + like and device can be given a part number. Changed the netlist + compiler behavior so that all indices are numbered relative to + a particular component, rather than numbered relative to all + components. + +188) v2.3.2 6/25/01 + Replaced the imake build with a GNU configure build. Thanks to + Albert Chin-A-Young <china@thewrittenword.com> for setting up + the scripts for automake/autoconf. For purposes of compliance + with modern directory nomenclature, startup files and such are + now installed in /usr/local/share/ instead of /usr/local/lib/. + + Also: Added a "show pin positions" feature (recommended by + Larry Doolittle) to the Options menu, which allows pin locations + to appear on the hierarchical level above, to help in finding + pin connections into objects. + +187) v2.3.1 6/22/01 + More patches from Larry Doolittle, some cleaning up cruft flagged + by compiling with -Wall, and re-patching a string function (an + error which I am unable to duplicate. But I will take his word + for it). Also, worked on Xw/TextEdit.c to implement horizontal + scrolling of text (so it will no longer run off the end of the + window). + + Also, finally implemented a way to check for overlapping objects + caused by a copy or move (this is not exhaustive, but covers the + most obvious ways this can happen). This is especially critical + for schematics, because multiple circuit elements will end up in + the netlist when they cannot be seen on the schematic. + +186) v2.3.1 6/21/01 + Applied patch from Larry Doolittle <ldoolitt@recycle.lbl.gov> + to correct error in line length computation when writing output. + Also modified file reader to treat lines ending with "{" as + continuation lines (such as the beginning of a label), if they + don't look like object definitions. + + Also: Copying library objects now also copies the parameters, + and the page viewing parameters. Corrected an error wherein + stringcopy() calls makesegment(), although the former is + supposed to ignore parameters, and the latter doesn't. Also, + instantiated a slightly "improved" object compare that is able + to compare objects against objects with underscore-prepended name + adjustments, in an attempt to avoid a proliferation of underscores. + Fixed an error that reset "version" in the middle of a file read + if a font was loaded. Updated some of the "examples" files to the + current format. + +185) v2.3.1 6/18/01 + Added tilde ('~') expansions to filenames. Thanks to Norman + Werner <norman.werner@student.uni-magdeburg.de> for patches which + seeded the final version of this code. + +184) v2.3.1 6/12/01 + Changed the Imakefile for Python-2.1 and added instructions to the + README file on how to make a shared (.so) python library. + +183) v2.3.1 6/11/01 + Corrected a few errors which showed up on other compilers (thanks + once again to Albert Chin, <china@thewrittenword.com>). + +182) v2.3.1 6/04/01 + Fixed an error caught by John Livsey (<jlivsey@bigpond.com>) in + which loading old library files causes the version number to + revert to 1.9, causing havoc when reloading saved files. This + has been fixed along with code to check more decisively for + which label syntax is in the file, and adjust the version number + accordingly rather than depend solely on the version number + extracted from the file header. + +181) v2.3.1 5/31/01 + Cleaned up errors found in the netlist code while doing a large + chip project. Added flattened SPICE output and changed SPICE + output to be compatible with "hspice" syntax. Netlist compilation + runs about three times faster than before, but should be able to + do better, still. + +180) v2.3 5/16/01 + Completed the full hierarchy search on subschematics. searchconnect() + makes a call to search_on_siblings(), looking for any connection from + any object in the hierarchy of viewable (sub)schematics to the object + under consideration. Added a bounding box disjoint test to reduce + unnecessary searching. Could use a lot more optimization, though. + + Also, from the March 27 version, genportpins() has been merged back + into gencalllist(). Spice and Sim netlists are correct for numerous + torture tests given to xcircuit. + + Corrected errors in text generation stemming from the new + PostScript profile (thanks to Jeremy T Braun <jtbraun@MIT.EDU> + for patches). Ultimately, decided to more closely match the + PostScript and XCircuit label formats by declaring an overall + scale outside of the label segments. All font scales declared + by "cf" commands are therefore relative, not absolute. The + change in output format prompted the change to version number + 2.3. + +Version 2.2 (December 2000 to May 2001) +---------------------------------------------------------------------- +179) v2.2.3 3/27/01 + Completely overhauled the method for text strings, implementing + a linked-list method. In conjunction with this change, also + overhauled parameters to be called bottom-up rather than top- + down, thus eliminating the need for tracking reallocated + memory (which was not compiling correctly under the latest + version of gcc). Also made other structural changes, removed + the text backspace character, and replaced it with a tabbing + system. Made key bindings for text home, end, left, right, + delete, return, and special character insert, as well as the + new tabbing commands. PostScript profile revised to + incorporate the tabbing features. + Also: Overhauled the netlist generator. The result is much + cleaner and more understandable. The main difference is that + the Netlist structure is comprised of nets and pins (no + separate Pinlist), and the Paramlist (now called a Portlist + to distinguish from object parameters) calls by net number, + not by pin name. Ports are accessed dictionary-style, by + key-value pairs (port ID : netID). The netlist is generated + in by three recursive routines, gennetlist(), genportpins(), + and gencalllist(). genportpins() now searches for net + connections arbitrarily far down into the netlist hierarchy. + gencalllist() resolves net numbers and removes empty calls + as it traverses the hierarchy. + Also: Implemented recursive selection for finding network + connectivity, so any net visible on the page can be queried + for both a net name and highlighting the network. + Also: Implemented automatic redraw of text with parameters, + so that parameters which are edited are immediately updated + wherever they occur in the current top-level page. + Also: Thanks to Masao Kawamura (kawamura@mlb.co.jp) Media Lab. + Inc., Japan, for tracking down several bugs, including a very + bad one in which the admittedly dubious syntax + a[x] = a[--x]; + acts like (the intended) + a[x] = a[x - 1]; x--; + when compiled with -g (debug) option, but acts like + x--; a[x] = a[x]; + when compiled without debug. Also, temporary files have been + reimplemented using mkstemp(), which is more secure than + tempnam() and tmpnam(). + +178) v2.2.2 3/7/01 + Added significantly to the Python interface, including access to + all elements on a page by dictionary key:value pair assignment. + Added mouse button handling to the key binding, and changed the + help window to reflect current key bindings. + +177) v2.2.2 3/1/01 + Fixed a bug in the PostScript profile introduced with version 2.2, + wherein string bounding boxes were computed incorrectly because + user space was rotated. + +176) v2.2.1 2/27/01 + Implemented code for user-defined key bindings; set up default + key bindings to match all prior versions of xcircuit, and added + python and script commands to bind and unbind keys with function + definitions. + +175) v2.2.1 1/30/01 + Cleaned up a lot of code, making the subroutine parameter lists + consistent. Added all the necessary function prototypes as a + separate prototypes.h file, and removed unused parameters and + unused variables. Fixed a few heretofore unnoticed bugs in the + process. Thanks to Karim Kaschani (karim.kaschani@arcormail.de) + for instigating this process, although I failed to find the bugs + he was experiencing, and may have to revamp the label and + parameter string concept (again!) to fix it. Also, thanks to + David Nicholls (davidallannicholls@hotmail.com) for a fix to + nosprint(), although I didn't implement the rest of his + thoughtfully provided code (and there was a lot of it!), + preferring to leave much of it to Python scripts, which are + coming soon. Expanded the Python functions, but so far, still + mostly experimental. + +174) v2.2.1 1/22/01 + Completely redefined the command-line, including the startup + script and .xcircuitrc file to be Python scripts, and embedded + the Python interpreter into xcircuit. + +173) v2.2.0 12/19/00 + Made additions to the command-line functions; also, declared + the library inclusion commands "loadlibrary" and "loadfontencoding" + to be obsolete, and changed the startup file "builtins.lps" to + a startup script called "startup.script". This makes a lot more + sense. + +172) v2.2.0 12/15/00 + Finally declared version to be stable enough for a non-beta + release. Revised methods for generating schematics and symbols + in the circuit hierarchy. Added (a modified) analoglib2.lps + (circuit elements with parameters) to the "builtins" list. + Fixed errors with sim and pcb netlist outputs, and cleaned up + other minor things. Object types are now "fundamental", + "trivial", and "subschematic", as well as "normal" object, + with the type depending partly on context. + +Version 2.1b (July 2000 to December 2000) +---------------------------------------------------------------------- +171) v2.1b9 (beta) 11/30/00 + Added full functionality for text blocks (carriage-return), + kerning, scaling, and color change within labels. + +170) v2.1b8 (beta) 11/11/00 + More fixes to the parameterization and netlist functions (thanks + to Terry Hancock <hancock@earthlink.net> for help with testing + and debugging this extraordinarily complex code). Created a new + PostScript prolog which not only fixes one very long-standing + error, but also allows text blocks with carriage returns and + kerning within text blocks. These functions have not yet been + reflected in the xcircuit code. + +169) v2.1b7 (beta) 10/30/00 + Possible fix (again!) to the input focus problem: Added an + event handler to catch map and unmap events, so xcircuit should + never attempt to set input focus on an unmapped window. Also: + extention to information labels allows labels to be broken into + parts, i.e., "sim1:", "sim2:", etc., and extended the protocol + of '%' sequences to include %r (carriage-return), %t (tab), and + %% ('%' symbol, literal). + +168) v2.1b7 (beta) 10/25/00 + Extended PCB netlist capability: An info label beginning with + "pcb:" now indicates the object name to be used in naming the + pins. The info label can contain all the %-escapes used for + spice: and sim: info labels, and similarly, can use parameters + with the Alt-p key sequence. A new escape "%n" has been added + which inserts the name of the object into the output. The new + pcb method can be used to explicitly define instances of an + object (i.e., "cap_1", "cap_2") or to redefine a name locally + ("inverter" becomes "1/6 74HC04", for instance). + +167) v2.1b6 (beta) 10/23/00 + Fixed a fatal bug pointed out by Wilson Barroz + (wbarroz@bol.com.br), in which a break statement got lost, + effectively crashing xcircuit if a path was selected. + +166) v2.1b6 (beta) 10/2/00 + Fixed problem with schematic capture on/off, so that pins and + info labels are not displayed or saved when schematic capture + has been turned off. Fixed much of the problem with parameter + strings, and added simple capability to apply a single parameter + to multiple strings. + +165) v2.1b5 (beta) 9/27/00 + Fixed problem with writing empty parameter strings to the output; + also, fixed a fatal crash error when an entire string is a + parameter and is deleted. XCircuit now prevents the creation of + parameters on a top-level page. + +164) v2.1b5 (beta) 9/25/00 + More changes to bounding box calculation: Everything was correct + except for the top-level page offsets, which were calculated from + the bounding box excluding schematic pins and info labels. Thanks + to Albert Ma <ama@cag.lcs.mit.edu> for pointing this out. + +163) v2.1b4 (beta) 9/22/00 + Added menu option to read a script, which has the same + functionality as the .xcircuitrc script (see #160, below). Added + "enable toolbar" and "enable xschema" to the command-line parser. + +162) v2.1b3 (beta) 8/7/00 + Changes to fix problems caused by (158) below; the toolbar widget + has finally been arranged to use multiple columns when there is + not enough room for one. + +161) v2.1b2 (beta) 8/4/00 + Added a "auto-fit" feature to automatically scale the drawing to + fit the output page. Also improved the behavior of the text-edit + widget to delete a selection if it exists in lieu of deleting a + character. + +160) v2.1b2 (beta) 8/3/00 + Added a command-line window which accepts the same commands as + the .xcircuitrc file. This syntax will be expanded in the near + future. Added text hints to the toolbar buttons. Added a + user-definable bounding-box capability, and fixed the automatic + bounding-box calculation to include spacing between pins and + their text. + +159) v2.1b1 (beta) 8/1/00 + Added a temporary file saving feature for recovery from crashes, + sudden power-downs, or emergency exit. Added a Control-C handler + to execute graceful exits from a hung state. Temporary files are + doubly-protected by duplication before writing, so crashes during + writes will not cause the (previous) backup to be lost. + +158) v2.1b1 (beta) 7/31/00 + Minor changes for compilation using HP/UX's ANSI-C compiler; one + major fix preventing loadlibrary() from calling composelib() + with argument FONTLIB (composefontlib() should be used for that). + Updated version number to 2.1 after Graham Murphy pointed out + that xcircuit-2.0a11 crashes when reading 2.0b4 input: + incompatibility is due to the reformatted label statement. + Added warning if file version is greater than executable version. + +Version 2.0b (October 1999 to July 2000) +---------------------------------------------------------------------- +157) v2.0b4 (beta) 7/18/00 + Corrected the partial-text-selection algorithm; new algorithm + makes an insideness test between each string character and the + select box. + +156) v2.0b4 (beta) 6/28/00 + Corrected and enhanced the routine printing the cursor position + and other information to the top of the window. + +155) v2.0b4 (beta) 2/25/00 + Finished implementing ghostscript-rendered backgrounds. Added + a toolbar widget for easy access to common commands; this + implementation is not yet complete. + +154) v2.0b3 (beta) 2/13/00 + More bug fixes, covering several bugs which were introduced + with the 2.0b series: bbox calculation after copy & move + across pages, segmentation fault when using middle mouse button + to finish a text label, double-printing of non-ASCII characters + in the output, confusion of grid and snap space functions from + the menu, and incorrect path starting position saved when 1st + path component is a spline or arc. + +153) v2.0b3 (beta) 2/8/00 + Testing preliminary support for Ghostscript-rendered backgrounds. + Bugfix to multiple library code (fatal error---adding new library + writes over current user library). Another bugfix---objcompare + was not being called. + +152) v2.0b3 (beta) 1/26/00 + Further implementation of multiple libraries, including loading, + appending, and saving; specifying library pages from the rc + file and the library file (specifically, "builtins.lps"), and + a menu item for creating new library pages. Currently there + is no way to move objects from one library page to any other + than the "User Library" (always defined as the last library + page), which is also true for object creation using "M" or + "Make Object". + +151) v2.0b3 (beta) 1/13/00 + Fixed behavior of rotate and flip when acting on groups and + extended behavior of both to cover all elements. Fixed a bug + in text select. Added a library-list page to enable multiple + libraries. Fixed bounding box calculations so that the bounding + box updates on every element change, and that update is reflected + in the page directory, libraries, and library directory as + required. + +150) v2.0b2 (beta) 1/10/00 + More changes: Added a page-list page to enable page reordering. + Structural changes: Put page parameters into separate structure + and viewscale and pcorner parameters into the object structure. + Now every object retains its zoom scale and position where last + edited. Also: some attempt to keep all/only variables required + by the top-level window in "areastruct", so later it will be + possible to implement multiple windows. Also some bug fixes and + other cleanups to the code, particularly the window/object + resizing and centering. + +149) v2.0b2 (beta) 1/5/00 + Numerous minor bug fixes, including automatic loading of derived + fonts (previously handled incorrectly), proper drawing during + scrollbar drags, and many fixes to the schematic capture system. + Symbol-Schematic association redone so that the symbol and + schematic do not have to have the same name. Because this code + is beta, this feature will not be backwardly compatible with + previous versions. + +148) v2.0b1 (beta) 11/2/99 + Changes to the Imakefile from Monte Bateman fix the reported + problems with both the RPM creation, and with the make process + not generating the proper subdirectories/installing files. + Changes to the RPM spec file go along with these fixes. + Support added for parameterized objects (full support for + string parameters, partial implementation of integer + parameters). + +Version 2.0a (July 1998 to November 1999) +---------------------------------------------------------------------- +147) v2.0a11 (alpha) 11/19/99 + Thanks to Mathieu Clar (mclar@ulg.ac.be) for finding that fix + #144 can be overridden if environment variable LANG is set + (e.g., to "french") and results in the same kind of program + crash. Now xcircuit sets LANG to "POSIX" internally. + +146) v2.0a11 (alpha) 10/26/99 + After a number of partial fixes, and with the help of Raymond + Burns (rayburns@eskimo.com), I fixed the keyboard input focus + problem which plagued, especially, the WindowMaker window + manager. Neverthess, this problem refuses to go away, and + this appears not yet to be the end of the story. + +145) v2.0a10 (alpha) 6/25/99 + Changed behavior of wire drawing so that mouse button 3 deletes + only the last segment of the line rather than deleting the + whole line. Added key macro "." to place a dot object or draw + a dot at the cursor position. + +144) v2.0a10 (alpha) 6/16/99 + Fixed a problem under non-US UNIX versions in which LC_NUMERIC + is set to use a comma character as a numeric decimal point. + Thanks to Lars Pettersson <larsp@oso.chalmers.se> and Paulo + Mario dos Santos Dias de Moraes <paulo.mario@omninet.com.br> + for helping to track down the problem (6/24/99---changed from + LC_NUMERIC to LC_ALL because there are apparently other things + which also screw up file loads if not set to US or equivalent). + +143) v2.0a10 (alpha) 6/14/99 + Added ISO-Latin5 (Turkish) on request from Recai Oktas at + Ondokuz Mayis University <roktas@samsun.omu.edu.tr>. Rewrote + source to allow future inclusion of all ISO-LatinX encodings. + +142) v2.0a10 (alpha) 5/25/99 + Finally got around to instantiating edit mode for paths. + +141) v2.0a10 (alpha) 5/24/99 + In text edit modes, the backslash character brings up a + page containing the font encoding, allowing entry of non- + printing characters by simple point-and-click. Use of + backslash escape sequences is deprecated. Also, fixed a + bug which prevented compilation if MAKE_LGF was not defined + in the Imakefile; thanks to Zhengdao Wang for the bug fix + <zhengdao@aphrodite.ee.umn.edu>. + +140) v2.0a9 (alpha) 5/20/99 + Finally fixed the "actions not found" bug, which seems to + be due to conflicting names of widget classes between Xaw + and Xw, and changed the popup menu behavior to place the + popup menu such that the cursor is initially on the title, + not on the top button. Also, added a README.ISOLatin2 file + giving instructions on how to setup xcircuit for Latin2 + encoded output. + +139) v2.0a9 (alpha) 5/17/99 + Changed menu button calling to the style adopted for + the abandoned attempt at using Motif; this style calls + each menubutton by its Widget address rather than explicitly + referring to the path created by panes, managers, etc., which + can be toolkit-dependent. + +138) v2.0a9 (alpha) 5/12/99 + Added font vectors for ISO-Latin2 encoding. Also, reparied + two fatal bugs (one involving the backslash character in + text, the other involving large user library files), and + reintroduced fix number 117 which somehow got lost. + +137) v2.0a9 (alpha) 5/1/99 + Font-drawing mechanism completely overhauled and replaced + with object-encoded fonts. Added font encoding selection + and a better interface for choosing font family, shape, + and encoding. Added PostScript output for generating + ISOLatin1 encodings of standard PostScript fonts. Fonts + extended and heavily revised; Courier, Helvetica, Times, + and Symbol all have unique font vectors. + +136) v2.0a8 (alpha) 5/6/99 + Zoltan Csahok <csahok@phase4.ujf-grenoble.fr> sent a bug fix + for the problem in which some objects would be made "hidden" + without being declared hidden in the library. + +135) v2.0a8 (alpha) 4/14/99 + Paul Ortyl <ortylp@key.net.pl> sent a fix to allow keyboard + entry of 8-bit characters (e.g., ISO-Latin1 or ISO-Latin2 + encoding). Text vectors still reflect Adobe Standard + encoding but hopefully this will be extended in the near + future. Added "W" key macro for popping up Write-Xcircuit + dialog, at Paul's request. + +134) v2.0a8 (alpha) 2/25/99 + Possibly just fixed the problematic window manager hints + (WMHints) bug which has been plaguing the system. + +133) v2.0a7 (alpha) 1/26/99 + Fixed a bug which was introduced into version 2.0a7 which + prevents landscape-oriented files from being loaded back into + xcircuit. + +132) v2.0a7 (alpha) 12/18/98 + Fixed a problem wherein the FileList and Help widgets set + their own fonts directly rather than getting them from the + X Resource manager. This causes XCircuit to crash when the + computer does not have that particular font preinstalled, as + noted by Niitsu Yoichiro <niitsu@amc.toshiba.co.jp>. + +131) v2.0a7 (alpha) 11/20/98 + Fixed a long-standing bug by making gridspace and snapspace + per-page variables, and permitting loading and saving these + values in the output file. At the same time, made these + values type float for better resolution (preliminary to + making all internal point values type float). + +130) v2.0a7 (alpha) 11/19/98 + Added the "zoom-out" box suggested by (): + the current area of the drawing window is made to fit into + the area bounded by the box. Added a button to the little + square at the intersection of the horizontal and vertical + scrollbars which acts like the "zoom view" function or "v" + key macro. + +129) v2.0a7 (alpha) 11/17/98 + Changed the behavior of the horizontal and vertical scrollbars + so that some smooth scrolling is possible (that which can be + accomplished by copying from the existing pixmap onto the + window, without redrawing the whole window). + +128) v2.0a6 (alpha) 11/16/98 + Made some fixes for Dale Scheetz <dwarf@polaris.net> to correct + some odd behavior under Linux: The help page has been shortened + by 30 pixels to clear the Windows-95-like menu bar in fvwm95, and + the "done" button has been moved to the top of the help window. + Also, reduced argv[0] (the command from the command line) to its + root before comparing to "xschema" and loading Xdefaults so that + the program isn't confused by an appended pathname. + +127) v2.0a6 (alpha) 11/12/98 + Added code suggested by Alireza Moini <moini@eleceng.adelaide.edu.au> + to use environment variable "XCIRCUIT_LIB_DIR" for searching for + libraries before trying the hard-coded BUILTINS_DIR as a last + resort. + +126) v2.0a6 (alpha) 10/4/98 + Cleaned up the code a little; moved most of the menu button + callbacks into a single file "menucalls.c", moved the file + list widget code into "filelist.c", and moved the help window + code into "help.c". + +125) v2.0a6 (alpha) 10/4/98 + Fixed a long-standing problem with the simple help window in + which it could not be repositioned. In addition, I prevented + the window from exceeding the computer screen boundary; when + it does, the help window is truncated but can be "scrolled" + in a simple sense by clicking the mouse in the help text + window. + +124) v2.0a5 (alpha) 9/27/98 + Fixed a problem apparently due to the above pixmap icon code + which caused window managers to lose input focus for the whole + xcircuit window. This appears to be fixed at least for "i386" + Linux systems. + +123) v2.0a4 (alpha) 9/1/98 + Upon urging of Michael Le, I generated a built-in pixmap icon. + Also fixed what was apparently a long-standing bug in resizearea(). + +122) v2.0a3 (alpha) 8/23/98 + Fixed a bug pointed out by Geert Jordaens which limited library + object names to 20 characters on file input. Added flip-invariant + text. Added pad space to pin labels. Began preliminary work on + support for parameterized objects (beginning with some example + code and a postscript prolog). Added missing definitions for + quarter and half space to xcircps2.pro. Changed library files + to take advantage of flip invariant text. + +121) v2.0a2 (alpha) 8/11/98 + More "load file" fixing: Modified the file loading routine so that + library files can be loaded with "Read Xcircuit PS"; i.e., they are + read like normal postscript files, and so can be read on the command + line. Only restriction is that they go into the user library, as + they would if read as part of a regular xcircuit postscript file. + +120) v2.0a2 (alpha) 8/10/98 + Fixed three LGF-related errors: 1) LGF files were imported whether + "read" or "import" was selected, 2) labels needed to set property + "pin", and 3) one of the connections in the definition for "TO" + in lgf.lps needed to be moved. + +119) v2.0a1 (alpha) 7/17/98 + Fixed some errors in setting filename and object name when loading + or attempting to load files. Fixed netlist error for connecting + multiple instances of the same label on a page. Got rid of + string-sharing behavior for labels and malloc'd each copy instead. + +118) v2.0a0 (alpha) 7/10/98 + Replaced Xcircuit version 1.7 with version 2.0, schematic capture + system included. Instantiating better management for version + numbers, starting right here! + +Version 1.6 (January 1998 to May 1998) +---------------------------------------------------------------------- +May 1998 + +117) A few bugfixes and additions courtesy of Jo"rg Wunsch, including + the addition of handling WM_DELETE_WINDOW client messages to + allow the program to be closed by window manager controls. + +116) Bug fixes from Paul Slootman for the 64-bit Alpha platform. + +115) David DiGiacomo pointed out that the problem with the "make" + halting under Solaris is the indeterminate exit status returned + by the menudep program. This has been fixed. + +April 1998 + +114) Backspace can no longer be typed from the keyboard; instead, + the keyboard Backspace acts like Delete, and a Backspace + character can be inserted from the "Text" menu. + +March 1998 + +113) Fixed a bug found by Cliff Koch <koch@cig.mot.com> in which + xcircuit did not check if an object name consists entirely of + numerals, which screws up the PostScript interpreter, which + tries to treat it as an integer. +112) Fixed a bug found by Dale Scheetz <dwarf@polaris.net> in which + a divide by zero would occur if a directory list was longer than + the pixel height of the file read window. +111) Fixed the colormap problem by figuring out how to get XCircuit + to gracefully install its own colormap on startup if the default + map is full. + +February 1998 + +110) Cleaned up the last typecasting problems in both the toplevel + directory and Xw; now should compile cleanly on all platforms + without specifically setting CCOPTIONS and CDEBUGFLAGS in the + Imakefile. +109) Changed the file loading routine so that Xcircuit automatically + figures out whether the file is a PostScript or LGF file, so + that there are no longer two separate "load" commands in the + File menu. +108) Added a number of "diglog" gates to the lgf.lps library; fixed + a bug reported by Jean-Luc Margot in which Imakefile refuses + to create the lib directory. +107) Fixed more problems with the inch/cm conversion, bugs reported + by Uwe Steinmann. Made all displays report in cm when in cm + gridstyle mode. Also made the full page switch from letter + size to A4 size when switching between inch and cm grids. + +January 1998 + +106) Cleaned up typecasting problems which produced compile-time + warnings. Added "integral" sign to the alphabet vectors and + revised the signal.lps library to include it. +105) Fixed longstanding bug in which the library (M)ove command would + overwrite an object with another. +104) Fixed another bug found by Monte Bateman in which the system + crashed when one tried to delete an object which had a dependency + somewhere. +103) Fixed a bug found by Monte Bateman which was that the alternate + color scheme flag did not toggle if the alternate color set was + chosen from the .xcircuitrc file, and in which the catalog objects + did not invert color and so became black-on-black or white-on-white. + All catalog objects now have color DEFAULTCOLOR instead of color + FOREGROUND, which makes more sense anyway. + +Version 1.5 (May 1997 to December 1997) +---------------------------------------------------------------------- + +December 1997 + +102) Added a copyright "artistic license". Changed filename + of distribution tarfile to contain the version number + (xcircuit-6.1.tar.gz). Began posting xcircuit to + sunsite.unc.edu. + +November 1997 + +101) Fixed a bug found by Mark Cohen in which xcircuit loses track of + the drawing area-to-window coordinate transformation whenever the + window is resized. + +October 1997 + +100) Fixed a long-standing problem with rhomboid-edit style for + polygons. The edit points can no longer spontaneously change + during editing; they are fixed when the editing begins. Added + a "Rhomboid-A" style, which is similar to Manhattan style. +99) Used a global variable to keep track of which element is being + edited so that it is unnecessary to swap elements to the end of + the list in order to edit them. +98) Fixed "bug" to make RHOMBOID edit like NORMAL edit when there are + only 2 points in the line (otherwise the second point gets dragged + along with the first). +97) Added capability to "hide" objects if the name of the object ends + with an ampersand ('&'). +96) Added override of default colors and addition of new colors to the + .xcircuitrc file definition. +95) Changed all color entries from type "short" to type "int" to allow + xcircuit to run on 16- and 24-bit TrueColor visuals. + +August 1997 + +94) Added "setmiterlimit" command to xcircps.pro to supress odd glitches + in some renderers (gs and certain printers) when drawing paths. Do + these devices not have the (stated) default value of 10? +93) Finished adding color. Added "scb" and "sce" (select-color-begin + and -end) to PS profile. "Opaque-stipple" style no longer selects + "setgray" in postscript; gray is selected by choosing the color + gray. Added "Inherited" color to list & based color scheme on the + idea of "color inheritence". +92) Began adding color; separated definitions for color and stipple + patterns, and set default color scheme to black-on-white. Added + stippled and colored rectangles to the Xw MenuBtn options for + menu buttons. + +July 1997: + +91) Added path horizontal and vertical flipping; fixed a long-standing + bug to let user cancel a "make object" command during the object + name popup prompt. +90) Stopped linking the filename to the page (object) name. +89) Enabled creation of paths through the use of the "join" function, + and the ability to deconstruct the path into its constituent parts + with the "unjoin" (keystroke "J") function. +88) Implemented paths (currently no editing capability). +87) Redesigned the edit and element creation modes to be consistent + between polygons, arcs, and splines. Arcs and splines can be + edited when created by using mouse button 1 to cycle between + control points. +86) Finished implementation of the revised "attach" command, including + attachment to ellipses and to the chord on a closed arc. +85) Finished implementation of ellipses. +84) Implemented a dual color scheme which is switchable from the menu; + no longer need XCircuit.ad.alt. This is preliminary to adding full + color. + + +May 1997: + +83) Preliminary implementation of ellipses. On the top level, ellipses + are constrained to the x-y axes, but can be rotated as part of an + object. +82) Changed the "attach" command to operate on *all* elements, so, + e.g., a polygon end can be forcibly attached to a circle perimeter, + and so forth. Needs a little refining, plus effects should be + duplicated for edit mode in "trackpoly", "trackarc", and + "trackspline". +81) Finished implementing rotate and flip for all element types. +80) Implemented optional graphics double-buffering for very clean and + quick refreshing of graphics. +79) Changed lists of elements from separate list for each element to + one list of type (genericptr *), which is re-typecast to each + element type. Makes a number of things much cleaner +78) Got rid of type WIRE altogether; only has polygons. No more "J" + command for unjoin, but "j" joins polygons together and the + algorithm is much cleaner than before and shouldn't be error-prone. +77) Gave arcs a line-segment representation, thus fixing the problem + of filled arcs and paving the way for the "path" aggregate element. + +Version 1.4 (August 1995 to March 1997) +---------------------------------------------------------------------- + +March 1997: + +76) Made the scaling slightly more restrictive, to prevent xcircuit + from exceeding bounds of type short int either in the window or + in the page coordinate system. +75) Prevented drawing objects and labels outside of the window area + in order to speed up rendering at close scales. +74) Better precision for Bezier curve rendering and object attachment. +73) Changed rendering to a stacked transformation matrix model. + Speeds up rendering, makes rendering more accurate, and cuts + down on code complexity. +72) Added Fixed-Width (Courier) font, made proper widths for both + Times and Helvetica fonts; implemented some different + characters for each font. +71) Allow change of font, style, and justification for one or more + selected labels. Now deselects labels and arc/poly/spline after + a style change. +70) Menu entries for text font, style and arc/poly/spline style change + to reflect the status of the currently selected element. +69) Colormap allocation problem fixed by new CvtStringToPixel() routine + which searches colormap for best approximation to color on a failed + color allocation. +68) Wrote program to automatically generate the pathnames for button + and cascade widgets in the pulldown menus. +67) Added polygon flip capability. + +February 1997: + +66) Expanded file selection widget to select and load multiple files, + also to load (single or multiple) library .lps and analog .lgf files. +65) Added a file selection widget to the popup prompt when selecting + a file to read. +64) Changed structure "select" to "selection" in order to get around + problem compiling under Solaris. + +January 1997: + +63) Added an output page width and height per xcircuit page instead + of the default 8.5" x 11" page that existed previously. Output + continues to be centered on the page. +62) Separated file names and page names. These are linked by default, + but can be separated by supplying a different page name, or by + having a multi-page output. + +December 1996: + +61) Added inch/cm reporting for keyboard-adjusted snap spacing. + +November 1996: + +60) Fixed minor bugs in the DSC-PostScript: %%PageTrailer statement + is not needed, and %%Trailer *must* come after all page commands + including the "showpage". Only the XCIRCsave restore statement + should be between %%Trailer and %%EOF. +59) Output scale changed to default of 1.0, with the arbitrary + pixel-to-PostScript-units constants bansished to the + PostScript prologue. +58) Changed grid and snap spacing routines to display inches/cm + instead of pixel coordinates. Pixel coordinates are now + entirely hidden from the user, who only sees things in + inches or centimeters (with a default of inches, reported + in fractions). +57) Position display now gives length of simple wires in addition + to the cursor position. +56) Modified routine to print coordinates in fractional inches, + to be able to generate a fraction from an arbitrary float. + +October 1996: + +55) Added code to prevent infinite recursion by attempting + to place an object within itself. +54) Revised .lgf-file reading for an exact 1:1 correspondence + of lgf names to the xcircuit library object names; made + a library "lgf.lps" to cover the main analog gates, with + some stylistic changes to the look of some of the gates. +53) Added capability to move objects around inside the + libraries. +52) Added capability to make a copy of an object from + either library page into the user library. +51) Added capability to delete objects from the library. + +September 1996: + +50) Cleaned up the Xw code so that it will compile on + not-so-forgiving compilers; also pruned out a + few things that are not used by Xcircuit. +49) Finally wrote the routine to compare objects and + avoid name conflicts. +48) Made PostScript output DSC-compliant, made file + reading more robust to errors in the input file. +47) Started implementing library manipulation routines + with library object rename; also added keystroke + "c" from library mode for "copy". +46) Fixed some problems with catalog organization of + objects. +45) Added multiple page loads and saves: pages with + the same name will be grouped together into one + file. EPS is not an option for multiple pages. +44) Made pages reallocatable, and added "Goto Page" + option in menu for accessing page numbers > 10. + New pages are automatically added to the pull-down + menu. Page names are the same as the object name. +43) Changed format of file ".xcircuitrc" and added + ability to load libraries, override the default + library load, load extra fonts, and set certain + variables. +42) Added ability to load an arbitrary number of + user-defined fonts. New fonts are automatically + added to the pull-down Font menu. +41) Changed embedded commands in text string to two bytes + each, allowing future extension of embedded commands. +40) Added handling of Ctrl-A and Ctrl-E for moving + to beginning and end of text, respectively + +August 1996: + +39) Added reading of ".xcircuitrc" in user's home + directory as an additional library file (file + takes same form as xcircuit or library files). +38) String text appears in message window immediately + upon starting or editing a label, and disappears + when done. +37) Fixed bugs in labels: Rewrote routines so all + labels start with a font-change specifier; + removed "fontset" command from PostScript profile. + +February 1996: + +36) Differentiate between Writing and Overwriting + a file (to prevent disasters!) and warn user + when file is about to be overwritten. +35) Made all spline routines relative to SPLINESEGS + and increased default SPLINESEGS to 20 + +January 1996: + +34) Allow push and pop while an object or objects + are selected and being dragged. +33) Added Rhomboid box editing in addition to + Manhattan box edit. +32) Added arrow-attachment routine to align arrows + with an underlying wire/polygon/spline/arc while + dragging. +31) Changed selection mechanism (again) to a simple + cartesian measure of distance from a line to + the cursor position. +30) Added capability to flip, rotate, and snap-to + while an object is selected and being dragged. + +August 1995: + +29) Added vertical flipping capability using macro "F". +28) Added extended character set capability; + both octal codes and LaTeX-like symbol names + can be entered at the text prompt after a + backslash. +27) Added lines to show spline control points and + arc center during creation and editing. +26) Moved to PostScript prologue version 1.5, for + which the order of parameters for polygon, arc, + and spline are rearranged and made similar to + each other. Reading of v1.4 files is kept for + backward compatibility. +25) Added rudimentary opaque-fill style for polygons, + arcs, and splines. "Vertical" alignment can only + be controlled on the object level, using the X + command (exchange). +24) Added "Manhattan Box Edit" style (default: ON) + such that right angles in polygons are maintained + during editing. + +Version 1.3 (March 1995 to June 1995) +---------------------------------------------------------------------- + +May/June 1995: + +23) Added backspace character handling in text. +22) One-step keystroke for dotted/dashed/solid line. +21) Allowed "join wires" to join wires and polygons. +20) Allowed "styles" options to operate on wires + by automatically converting them to polygons. +19) Fixed bug in which Xw copy buffer overflowed + string in sprintf() [solution: restrict + "precision" of string thus: "%.149s"]. +18) Added "edit (e)" command to menu. +17) Added capability to read Caltech tools' "analog" + .lgf format files. + +March 1995: + +16) Added feature to report non-printing characters + in a label, when editing. +15) Added Zoom Box function. +14) Changed copy behavior to allow multiple copies + when button1 is used, and a single copy when + button2 is used. +13) Fixed problems with pixel trash left behind by + text editing. +12) Beeps when it doesn't write file due to filename + problem. +11) Added countdown for multiple selections. +10) Added new cursor for edit mode. +9) Xcircuit *only* does auto delete/addition of the + extension if extension is ".ps". All other + filename extensions are left alone. +8) Changed behavior so that request to load a file + which does not exist will change the current + file name, provided that current page is empty. +7) Changed library pages to be actual objects, made + routine "composelib" to arrange the library objects + based on height and width of each object, changed + names of objects to xcircuit labels. +6) Fixed numerous malloc() bugs. +5) Added function to import xcircuit files into the + current file as well as loading them into a page + with page reset. +4) Added ability to change coordinate grid and + report coordinates in inches (decimal and + fractional) and centimeters as well as the usual + pixel grid. +3) Added (simple) help screen +2) Added simple scrollbars on side and bottom, allowing + click-to-pan. Added global variables to save current + GC state and foreground color. +1) Added 2 message widgets, one for name of file + to edit, one for coordinates, one for information + +---------------------------------------------------------------------- |