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authorHamish Moffatt <hamish@debian.org>2002-01-06 13:02:15 +0100
committerHamish Moffatt <hamish@debian.org>2002-01-06 13:02:15 +0100
commit2679d213fe4eae9f00a496c9b5fa2a67c85e78e1 (patch)
tree8065f92eb2795042b55fa45c0ac74f539706e714 /libgstroke
Import libstroke_0.5.1.orig.tar.gz
[dgit import orig libstroke_0.5.1.orig.tar.gz]
Diffstat (limited to 'libgstroke')
-rw-r--r--libgstroke/ChangeLog31
-rw-r--r--libgstroke/Makefile.am34
-rw-r--r--libgstroke/Makefile.in398
-rw-r--r--libgstroke/README1
-rw-r--r--libgstroke/TODO11
-rw-r--r--libgstroke/gnome-stroke-draw.c330
-rw-r--r--libgstroke/gnome-stroke.c289
-rw-r--r--libgstroke/gstroke-internal.h41
-rw-r--r--libgstroke/gstroke.h43
9 files changed, 1178 insertions, 0 deletions
diff --git a/libgstroke/ChangeLog b/libgstroke/ChangeLog
new file mode 100644
index 0000000..4c6a30f
--- /dev/null
+++ b/libgstroke/ChangeLog
@@ -0,0 +1,31 @@
+2001-07-05 Dan Nicolaescu <dann@ics.uci.edu>
+
+ * Rename everything to be called gstroke* instead of stroke* as
+ the later is sometimes used to mean other things in GNOME
+ programs.
+
+2000-08-25 Dan Nicolaescu <dann@ics.uci.edu>
+
+ * gnome-stroke.c: Move global data to a structure...
+ * stroke-internal.h: ... defined here (struct stroke_metrics).
+ (STROKE_METRICS): New define.
+
+ * gnome-stroke.c (stroke_init):
+ (stroke_trans): Take a stroke_metrics* parameter.
+
+ (stroke_trans): Call stroke_init instead of freeing the
+ pointList.
+
+ * stroke.h (STROKE_MOUSE_BUTTON): New define.
+ * gnome-stroke-wrapper.c (process_event): Use it.
+ (stroke_execute): Make it static.
+ (STROKE_SIGNALS): New define.
+ (stroke_signal_connect):
+ (stroke_execute): Use it instead of a string.
+ (stroke_cleanup): New function. Should be called when the widget
+ is destroyed.
+ (stroke_canonical): Move it after stroke_trans so gcc can inline
+ it.
+
+ Prepend _ to all the non-static functions to keep the namespace
+ clean. \ No newline at end of file
diff --git a/libgstroke/Makefile.am b/libgstroke/Makefile.am
new file mode 100644
index 0000000..8d6f5e3
--- /dev/null
+++ b/libgstroke/Makefile.am
@@ -0,0 +1,34 @@
+# A brief demonstration of using Automake with Libtool. -*-Makefile-*-
+#
+# NOTE: Don't forget that in the libtool distribution, files in this
+# directory are distributed by the demo_distfiles variable in the top
+# level Makefile.
+AUTOMAKE_OPTIONS = foreign
+
+EXTRA_DIST =
+
+#SEL_BIB = libgstroke.la
+
+lib_LTLIBRARIES = libgstroke.la
+libgstroke_la_SOURCES = gnome-stroke.c gnome-stroke-draw.c gstroke.h
+
+libgstroke_la_LDFLAGS = -version-info 0:5:0
+
+include_HEADERS = gstroke.h
+
+noinst_HEADERS = gstroke-internal.h
+
+INCLUDES = @GTK_CFLAGS@
+LDADD = @GTK_LIBS@
+
+EXTRA_DIST =
+
+MOSTLYCLEANFILES = core *~
+CLEANFILES = core *~
+DISTCLEANFILES = core *~
+MAINTAINERCLEANFILES = core *~
+
+# Unfortunately, in order to test libtool thoroughly, we need access
+# to its private directory.
+objdir = `sed -n -e 's/^objdir=\"\(.*\)\"$$/\1/p' ./libtool`
+
diff --git a/libgstroke/Makefile.in b/libgstroke/Makefile.in
new file mode 100644
index 0000000..2e1b307
--- /dev/null
+++ b/libgstroke/Makefile.in
@@ -0,0 +1,398 @@
+# Makefile.in generated automatically by automake 1.4 from Makefile.am
+
+# Copyright (C) 1994, 1995-8, 1999 Free Software Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+# A brief demonstration of using Automake with Libtool. -*-Makefile-*-
+#
+# NOTE: Don't forget that in the libtool distribution, files in this
+# directory are distributed by the demo_distfiles variable in the top
+# level Makefile.
+
+
+SHELL = @SHELL@
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+
+bindir = @bindir@
+sbindir = @sbindir@
+libexecdir = @libexecdir@
+datadir = @datadir@
+sysconfdir = @sysconfdir@
+sharedstatedir = @sharedstatedir@
+localstatedir = @localstatedir@
+libdir = @libdir@
+infodir = @infodir@
+mandir = @mandir@
+includedir = @includedir@
+oldincludedir = /usr/include
+
+DESTDIR =
+
+pkgdatadir = $(datadir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+
+top_builddir = ..
+
+ACLOCAL = @ACLOCAL@
+AUTOCONF = @AUTOCONF@
+AUTOMAKE = @AUTOMAKE@
+AUTOHEADER = @AUTOHEADER@
+
+INSTALL = @INSTALL@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@ $(AM_INSTALL_PROGRAM_FLAGS)
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+transform = @program_transform_name@
+
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+host_alias = @host_alias@
+host_triplet = @host@
+AS = @AS@
+CC = @CC@
+DLLTOOL = @DLLTOOL@
+GTK_CFLAGS = @GTK_CFLAGS@
+GTK_CONFIG = @GTK_CONFIG@
+GTK_LIBS = @GTK_LIBS@
+LD = @LD@
+LIBTOOL = @LIBTOOL@
+LN_S = @LN_S@
+MAINT = @MAINT@
+MAKEINFO = @MAKEINFO@
+NM = @NM@
+PACKAGE = @PACKAGE@
+RANLIB = @RANLIB@
+USE_SYMBOL_UNDERSCORE = @USE_SYMBOL_UNDERSCORE@
+VERSION = @VERSION@
+X_CFLAGS = @X_CFLAGS@
+X_LDFLAGS = @X_LDFLAGS@
+
+AUTOMAKE_OPTIONS = foreign
+
+EXTRA_DIST =
+
+#SEL_BIB = libgstroke.la
+
+lib_LTLIBRARIES = libgstroke.la
+libgstroke_la_SOURCES = gnome-stroke.c gnome-stroke-draw.c gstroke.h
+
+libgstroke_la_LDFLAGS = -version-info 0:5:0
+
+include_HEADERS = gstroke.h
+
+noinst_HEADERS = gstroke-internal.h
+
+INCLUDES = @GTK_CFLAGS@
+LDADD = @GTK_LIBS@
+
+MOSTLYCLEANFILES = core *~
+CLEANFILES = core *~
+DISTCLEANFILES = core *~
+MAINTAINERCLEANFILES = core *~
+
+# Unfortunately, in order to test libtool thoroughly, we need access
+# to its private directory.
+objdir = `sed -n -e 's/^objdir=\"\(.*\)\"$$/\1/p' ./libtool`
+mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
+CONFIG_HEADER = ../config.h
+CONFIG_CLEAN_FILES =
+LTLIBRARIES = $(lib_LTLIBRARIES)
+
+
+DEFS = @DEFS@ -I. -I$(srcdir) -I..
+CPPFLAGS = @CPPFLAGS@
+LDFLAGS = @LDFLAGS@
+LIBS = @LIBS@
+X_LIBS = @X_LIBS@
+X_EXTRA_LIBS = @X_EXTRA_LIBS@
+X_PRE_LIBS = @X_PRE_LIBS@
+libgstroke_la_LIBADD =
+libgstroke_la_OBJECTS = gnome-stroke.lo gnome-stroke-draw.lo
+CFLAGS = @CFLAGS@
+COMPILE = $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
+LTCOMPILE = $(LIBTOOL) --mode=compile $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
+CCLD = $(CC)
+LINK = $(LIBTOOL) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@
+HEADERS = $(include_HEADERS) $(noinst_HEADERS)
+
+DIST_COMMON = README ChangeLog Makefile.am Makefile.in TODO
+
+
+DISTFILES = $(DIST_COMMON) $(SOURCES) $(HEADERS) $(TEXINFOS) $(EXTRA_DIST)
+
+TAR = gtar
+GZIP_ENV = --best
+DEP_FILES = .deps/gnome-stroke-draw.P .deps/gnome-stroke.P
+SOURCES = $(libgstroke_la_SOURCES)
+OBJECTS = $(libgstroke_la_OBJECTS)
+
+all: all-redirect
+.SUFFIXES:
+.SUFFIXES: .S .c .lo .o .s
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ Makefile.am $(top_srcdir)/configure.in $(ACLOCAL_M4)
+ cd $(top_srcdir) && $(AUTOMAKE) --foreign libgstroke/Makefile
+
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status $(BUILT_SOURCES)
+ cd $(top_builddir) \
+ && CONFIG_FILES=$(subdir)/$@ CONFIG_HEADERS= $(SHELL) ./config.status
+
+
+mostlyclean-libLTLIBRARIES:
+
+clean-libLTLIBRARIES:
+ -test -z "$(lib_LTLIBRARIES)" || rm -f $(lib_LTLIBRARIES)
+
+distclean-libLTLIBRARIES:
+
+maintainer-clean-libLTLIBRARIES:
+
+install-libLTLIBRARIES: $(lib_LTLIBRARIES)
+ @$(NORMAL_INSTALL)
+ $(mkinstalldirs) $(DESTDIR)$(libdir)
+ @list='$(lib_LTLIBRARIES)'; for p in $$list; do \
+ if test -f $$p; then \
+ echo "$(LIBTOOL) --mode=install $(INSTALL) $$p $(DESTDIR)$(libdir)/$$p"; \
+ $(LIBTOOL) --mode=install $(INSTALL) $$p $(DESTDIR)$(libdir)/$$p; \
+ else :; fi; \
+ done
+
+uninstall-libLTLIBRARIES:
+ @$(NORMAL_UNINSTALL)
+ list='$(lib_LTLIBRARIES)'; for p in $$list; do \
+ $(LIBTOOL) --mode=uninstall rm -f $(DESTDIR)$(libdir)/$$p; \
+ done
+
+.s.o:
+ $(COMPILE) -c $<
+
+.S.o:
+ $(COMPILE) -c $<
+
+mostlyclean-compile:
+ -rm -f *.o core *.core
+
+clean-compile:
+
+distclean-compile:
+ -rm -f *.tab.c
+
+maintainer-clean-compile:
+
+.s.lo:
+ $(LIBTOOL) --mode=compile $(COMPILE) -c $<
+
+.S.lo:
+ $(LIBTOOL) --mode=compile $(COMPILE) -c $<
+
+mostlyclean-libtool:
+ -rm -f *.lo
+
+clean-libtool:
+ -rm -rf .libs _libs
+
+distclean-libtool:
+
+maintainer-clean-libtool:
+
+libgstroke.la: $(libgstroke_la_OBJECTS) $(libgstroke_la_DEPENDENCIES)
+ $(LINK) -rpath $(libdir) $(libgstroke_la_LDFLAGS) $(libgstroke_la_OBJECTS) $(libgstroke_la_LIBADD) $(LIBS)
+
+install-includeHEADERS: $(include_HEADERS)
+ @$(NORMAL_INSTALL)
+ $(mkinstalldirs) $(DESTDIR)$(includedir)
+ @list='$(include_HEADERS)'; for p in $$list; do \
+ if test -f "$$p"; then d= ; else d="$(srcdir)/"; fi; \
+ echo " $(INSTALL_DATA) $$d$$p $(DESTDIR)$(includedir)/$$p"; \
+ $(INSTALL_DATA) $$d$$p $(DESTDIR)$(includedir)/$$p; \
+ done
+
+uninstall-includeHEADERS:
+ @$(NORMAL_UNINSTALL)
+ list='$(include_HEADERS)'; for p in $$list; do \
+ rm -f $(DESTDIR)$(includedir)/$$p; \
+ done
+
+tags: TAGS
+
+ID: $(HEADERS) $(SOURCES) $(LISP)
+ list='$(SOURCES) $(HEADERS)'; \
+ unique=`for i in $$list; do echo $$i; done | \
+ awk ' { files[$$0] = 1; } \
+ END { for (i in files) print i; }'`; \
+ here=`pwd` && cd $(srcdir) \
+ && mkid -f$$here/ID $$unique $(LISP)
+
+TAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) $(LISP)
+ tags=; \
+ here=`pwd`; \
+ list='$(SOURCES) $(HEADERS)'; \
+ unique=`for i in $$list; do echo $$i; done | \
+ awk ' { files[$$0] = 1; } \
+ END { for (i in files) print i; }'`; \
+ test -z "$(ETAGS_ARGS)$$unique$(LISP)$$tags" \
+ || (cd $(srcdir) && etags $(ETAGS_ARGS) $$tags $$unique $(LISP) -o $$here/TAGS)
+
+mostlyclean-tags:
+
+clean-tags:
+
+distclean-tags:
+ -rm -f TAGS ID
+
+maintainer-clean-tags:
+
+distdir = $(top_builddir)/$(PACKAGE)-$(VERSION)/$(subdir)
+
+subdir = libgstroke
+
+distdir: $(DISTFILES)
+ here=`cd $(top_builddir) && pwd`; \
+ top_distdir=`cd $(top_distdir) && pwd`; \
+ distdir=`cd $(distdir) && pwd`; \
+ cd $(top_srcdir) \
+ && $(AUTOMAKE) --include-deps --build-dir=$$here --srcdir-name=$(top_srcdir) --output-dir=$$top_distdir --foreign libgstroke/Makefile
+ @for file in $(DISTFILES); do \
+ d=$(srcdir); \
+ if test -d $$d/$$file; then \
+ cp -pr $$d/$$file $(distdir)/$$file; \
+ else \
+ test -f $(distdir)/$$file \
+ || ln $$d/$$file $(distdir)/$$file 2> /dev/null \
+ || cp -p $$d/$$file $(distdir)/$$file || :; \
+ fi; \
+ done
+
+DEPS_MAGIC := $(shell mkdir .deps > /dev/null 2>&1 || :)
+
+-include $(DEP_FILES)
+
+mostlyclean-depend:
+
+clean-depend:
+
+distclean-depend:
+ -rm -rf .deps
+
+maintainer-clean-depend:
+
+%.o: %.c
+ @echo '$(COMPILE) -c $<'; \
+ $(COMPILE) -Wp,-MD,.deps/$(*F).pp -c $<
+ @-cp .deps/$(*F).pp .deps/$(*F).P; \
+ tr ' ' '\012' < .deps/$(*F).pp \
+ | sed -e 's/^\\$$//' -e '/^$$/ d' -e '/:$$/ d' -e 's/$$/ :/' \
+ >> .deps/$(*F).P; \
+ rm .deps/$(*F).pp
+
+%.lo: %.c
+ @echo '$(LTCOMPILE) -c $<'; \
+ $(LTCOMPILE) -Wp,-MD,.deps/$(*F).pp -c $<
+ @-sed -e 's/^\([^:]*\)\.o[ ]*:/\1.lo \1.o :/' \
+ < .deps/$(*F).pp > .deps/$(*F).P; \
+ tr ' ' '\012' < .deps/$(*F).pp \
+ | sed -e 's/^\\$$//' -e '/^$$/ d' -e '/:$$/ d' -e 's/$$/ :/' \
+ >> .deps/$(*F).P; \
+ rm -f .deps/$(*F).pp
+info-am:
+info: info-am
+dvi-am:
+dvi: dvi-am
+check-am: all-am
+check: check-am
+installcheck-am:
+installcheck: installcheck-am
+install-exec-am: install-libLTLIBRARIES
+install-exec: install-exec-am
+
+install-data-am: install-includeHEADERS
+install-data: install-data-am
+
+install-am: all-am
+ @$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+install: install-am
+uninstall-am: uninstall-libLTLIBRARIES uninstall-includeHEADERS
+uninstall: uninstall-am
+all-am: Makefile $(LTLIBRARIES) $(HEADERS)
+all-redirect: all-am
+install-strip:
+ $(MAKE) $(AM_MAKEFLAGS) AM_INSTALL_PROGRAM_FLAGS=-s install
+installdirs:
+ $(mkinstalldirs) $(DESTDIR)$(libdir) $(DESTDIR)$(includedir)
+
+
+mostlyclean-generic:
+ -test -z "$(MOSTLYCLEANFILES)" || rm -f $(MOSTLYCLEANFILES)
+
+clean-generic:
+ -test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+ -rm -f Makefile $(CONFIG_CLEAN_FILES)
+ -rm -f config.cache config.log stamp-h stamp-h[0-9]*
+ -test -z "$(DISTCLEANFILES)" || rm -f $(DISTCLEANFILES)
+
+maintainer-clean-generic:
+ -test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+mostlyclean-am: mostlyclean-libLTLIBRARIES mostlyclean-compile \
+ mostlyclean-libtool mostlyclean-tags mostlyclean-depend \
+ mostlyclean-generic
+
+mostlyclean: mostlyclean-am
+
+clean-am: clean-libLTLIBRARIES clean-compile clean-libtool clean-tags \
+ clean-depend clean-generic mostlyclean-am
+
+clean: clean-am
+
+distclean-am: distclean-libLTLIBRARIES distclean-compile \
+ distclean-libtool distclean-tags distclean-depend \
+ distclean-generic clean-am
+ -rm -f libtool
+
+distclean: distclean-am
+
+maintainer-clean-am: maintainer-clean-libLTLIBRARIES \
+ maintainer-clean-compile maintainer-clean-libtool \
+ maintainer-clean-tags maintainer-clean-depend \
+ maintainer-clean-generic distclean-am
+ @echo "This command is intended for maintainers to use;"
+ @echo "it deletes files that may require special tools to rebuild."
+
+maintainer-clean: maintainer-clean-am
+
+.PHONY: mostlyclean-libLTLIBRARIES distclean-libLTLIBRARIES \
+clean-libLTLIBRARIES maintainer-clean-libLTLIBRARIES \
+uninstall-libLTLIBRARIES install-libLTLIBRARIES mostlyclean-compile \
+distclean-compile clean-compile maintainer-clean-compile \
+mostlyclean-libtool distclean-libtool clean-libtool \
+maintainer-clean-libtool uninstall-includeHEADERS \
+install-includeHEADERS tags mostlyclean-tags distclean-tags clean-tags \
+maintainer-clean-tags distdir mostlyclean-depend distclean-depend \
+clean-depend maintainer-clean-depend info-am info dvi-am dvi check \
+check-am installcheck-am installcheck install-exec-am install-exec \
+install-data-am install-data install-am install uninstall-am uninstall \
+all-redirect all-am all installdirs mostlyclean-generic \
+distclean-generic clean-generic maintainer-clean-generic clean \
+mostlyclean distclean maintainer-clean
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/libgstroke/README b/libgstroke/README
new file mode 100644
index 0000000..f546fc3
--- /dev/null
+++ b/libgstroke/README
@@ -0,0 +1 @@
+See ../README.libgstroke
diff --git a/libgstroke/TODO b/libgstroke/TODO
new file mode 100644
index 0000000..1427876
--- /dev/null
+++ b/libgstroke/TODO
@@ -0,0 +1,11 @@
+TODO
+-----
+
+Make gnome-stroke-draw.c:gstroke_invisible_window_init (GtkWidget *widget)
+use Gtk+ primitives, not X11 primitives (no idea if this is even possible).
+
+Should the static vars gstroke_* in gnome_stroke_draw.c be moved to
+stroke_metrics structure?
+
+Improve the autoconf macros. They should probably use the gnome
+autoconf infrastructure. Help with this would be appreciated.
diff --git a/libgstroke/gnome-stroke-draw.c b/libgstroke/gnome-stroke-draw.c
new file mode 100644
index 0000000..79665fe
--- /dev/null
+++ b/libgstroke/gnome-stroke-draw.c
@@ -0,0 +1,330 @@
+/*
+ GNOME stroke implementation
+ Copyright (c) 2000, 2001 Dan Nicolaescu
+ See the file COPYING for distribution information.
+*/
+
+#include "config.h"
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <glib.h>
+#include <gtk/gtk.h>
+
+#include <gdk/gdkx.h>
+#include "gstroke.h"
+#include "gstroke-internal.h"
+
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+
+
+static void gstroke_invisible_window_init (GtkWidget *widget);
+/*FIXME: Maybe these should be put in a structure, and not static...*/
+static Display * gstroke_disp;
+static Window gstroke_window;
+static GC gstroke_gc;
+
+#define GSTROKE_TIMEOUT_DURATION 10
+
+#define GSTROKE_SIGNALS "gstroke_signals"
+
+struct gstroke_func_and_data {
+ GtkSignalFunc func;
+ gpointer data;
+};
+
+
+/*FIXME: maybe it's better to just make 2 static variables, not a
+ structure */
+struct mouse_position {
+ struct s_point last_point;
+ gboolean invalid;
+};
+
+
+static struct mouse_position last_mouse_position;
+static guint timer_id;
+
+static void gstroke_execute (GtkWidget *widget, const gchar *name);
+
+static void
+record_stroke_segment (GtkWidget *widget)
+{
+ gint x, y;
+ struct gstroke_metrics *metrics;
+
+ gtk_widget_get_pointer (widget, &x, &y);
+
+ if (last_mouse_position.invalid)
+ last_mouse_position.invalid = FALSE;
+ else
+ {
+#if 1
+ XDrawLine (gstroke_disp, gstroke_window, gstroke_gc,
+ last_mouse_position.last_point.x,
+ last_mouse_position.last_point.y,
+ x, y);
+ /* XFlush (gstroke_disp); */
+#else
+ /* FIXME: this does not work. It will only work if we create a
+ corresponding GDK window for stroke_window and draw on
+ that... */
+ gdk_draw_line (widget->window, widget->style->fg_gc[GTK_STATE_NORMAL],
+ last_mouse_position.last_point.x,
+ last_mouse_position.last_point.y,
+ x,
+ y);
+#endif
+ }
+
+ if (last_mouse_position.last_point.x != x
+ || last_mouse_position.last_point.y != y)
+ {
+ last_mouse_position.last_point.x = x;
+ last_mouse_position.last_point.y = y;
+ metrics =
+ (struct gstroke_metrics*)gtk_object_get_data (GTK_OBJECT (widget),
+ GSTROKE_METRICS);
+ _gstroke_record (x, y, metrics);
+ }
+}
+
+static gint
+gstroke_timeout (gpointer data)
+{
+ GtkWidget *widget = GTK_WIDGET (data);
+ record_stroke_segment (widget);
+
+ return TRUE;
+}
+
+static gint
+process_event (GtkWidget *widget, GdkEvent *event, gpointer data G_GNUC_UNUSED)
+{
+ static GtkWidget *original_widget = NULL;
+ switch (event->type) {
+ case GDK_BUTTON_PRESS:
+ if (event->button.button != GSTROKE_MOUSE_BUTTON)
+ break;
+
+ original_widget = widget; /* remeber the widget where
+ the stroke started */
+
+ gstroke_invisible_window_init (widget);
+
+ record_stroke_segment (widget);
+
+ gdk_pointer_grab (widget->window, FALSE,
+ GDK_BUTTON_RELEASE_MASK, NULL, NULL,
+ event->button.time);
+ timer_id = gtk_timeout_add (GSTROKE_TIMEOUT_DURATION,
+ gstroke_timeout, widget);
+ return TRUE;
+
+ case GDK_BUTTON_RELEASE:
+ if ((event->button.button != GSTROKE_MOUSE_BUTTON)
+ || (original_widget == NULL))
+ /* the stroke probably did not start here... */
+ break;
+
+ last_mouse_position.invalid = TRUE;
+ original_widget = NULL;
+ gtk_timeout_remove (timer_id);
+ gdk_pointer_ungrab (event->button.time);
+ timer_id = 0;
+
+ {
+ char result[GSTROKE_MAX_SEQUENCE];
+ struct gstroke_metrics *metrics
+ = (struct gstroke_metrics*) gtk_object_get_data (GTK_OBJECT (widget),
+ GSTROKE_METRICS);
+ /* get rid of the invisible stroke window */
+ XUnmapWindow (gstroke_disp, gstroke_window);
+ XFlush (gstroke_disp);
+
+ _gstroke_canonical (result, metrics);
+ gstroke_execute (widget, result);
+ return FALSE;
+ }
+ return TRUE;
+ default:
+ break;
+ }
+
+ return FALSE;
+}
+
+void
+gstroke_enable (GtkWidget *widget)
+{
+ struct gstroke_metrics*
+ metrics = (struct gstroke_metrics*)gtk_object_get_data (GTK_OBJECT (widget),
+ GSTROKE_METRICS);
+ if (metrics == NULL)
+ {
+ metrics = (struct gstroke_metrics *)g_malloc (sizeof
+ (struct gstroke_metrics));
+ metrics->pointList = NULL;
+ metrics->min_x = 10000;
+ metrics->min_y = 10000;
+ metrics->max_x = 0;
+ metrics->max_y = 0;
+ metrics->point_count = 0;
+
+ gtk_object_set_data (GTK_OBJECT (widget), GSTROKE_METRICS,
+ metrics);
+
+ gtk_signal_connect (GTK_OBJECT (widget), "event",
+ (GtkSignalFunc) process_event,
+ NULL);
+ }
+ else
+ _gstroke_init (metrics);
+
+ last_mouse_position.invalid = TRUE;
+}
+
+guint
+gstroke_signal_connect (GtkWidget *widget,
+ const gchar *name,
+ GtkSignalFunc func,
+ gpointer data)
+{
+ struct gstroke_func_and_data *func_and_data;
+ GHashTable *hash_table =
+ (GHashTable*)gtk_object_get_data (GTK_OBJECT (widget), GSTROKE_SIGNALS);
+
+ if (!hash_table)
+ {
+ hash_table = g_hash_table_new (g_str_hash, g_str_equal);
+ gtk_object_set_data (GTK_OBJECT (widget), GSTROKE_SIGNALS,
+ (gpointer)hash_table);
+ }
+ func_and_data = g_new (struct gstroke_func_and_data, 1);
+ func_and_data->func = func;
+ func_and_data->data = data;
+ g_hash_table_insert (hash_table, (gpointer)name, (gpointer)func_and_data);
+ return TRUE;
+}
+
+static void
+gstroke_execute (GtkWidget *widget, const gchar *name)
+{
+
+ GHashTable *hash_table =
+ (GHashTable*)gtk_object_get_data (GTK_OBJECT (widget), GSTROKE_SIGNALS);
+
+#ifdef DEBUG
+ printf ("gstroke %s\n", name);
+ fflush (stdout);
+#endif
+
+ if (hash_table)
+ {
+ struct gstroke_func_and_data *fd =
+ (struct gstroke_func_and_data*)g_hash_table_lookup (hash_table, name);
+ if (fd)
+ (*fd->func)(widget, fd->data);
+ }
+}
+
+void
+gstroke_cleanup (GtkWidget *widget)
+{
+ struct gstroke_metrics *metrics;
+ GHashTable *hash_table =
+ (GHashTable*)gtk_object_get_data (GTK_OBJECT (widget), GSTROKE_SIGNALS);
+ if (hash_table)
+ /* FIXME: does this delete the elements too? */
+ g_hash_table_destroy (hash_table);
+
+ gtk_object_remove_data (GTK_OBJECT (widget), GSTROKE_SIGNALS);
+
+ metrics = (struct gstroke_metrics*)gtk_object_get_data (GTK_OBJECT (widget),
+ GSTROKE_METRICS);
+ if (metrics)
+ g_free (metrics);
+ gtk_object_remove_data (GTK_OBJECT (widget), GSTROKE_METRICS);
+}
+
+
+/* This function should be written using Gtk+ primitives*/
+static void
+gstroke_invisible_window_init (GtkWidget *widget)
+{
+ XSetWindowAttributes w_attr;
+ XWindowAttributes orig_w_attr;
+ unsigned long mask, col_border, col_background;
+ unsigned int border_width;
+ XSizeHints hints;
+ Display *disp = GDK_WINDOW_XDISPLAY(widget->window);
+ Window wind = GDK_WINDOW_XWINDOW (widget->window);
+ int screen = DefaultScreen (disp);
+
+ gstroke_disp = disp;
+
+ /* X server should save what's underneath */
+ XGetWindowAttributes (gstroke_disp, wind, &orig_w_attr);
+ hints.x = orig_w_attr.x;
+ hints.y = orig_w_attr.y;
+ hints.width = orig_w_attr.width;
+ hints.height = orig_w_attr.height;
+ mask = CWSaveUnder;
+ w_attr.save_under = True;
+
+ /* inhibit all the decorations */
+ mask |= CWOverrideRedirect;
+ w_attr.override_redirect = True;
+
+ /* Don't set a background, transparent window */
+ mask |= CWBackPixmap;
+ w_attr.background_pixmap = None;
+
+ /* Default input window look */
+ col_background = WhitePixel (gstroke_disp, screen);
+
+ /* no border for the window */
+#ifdef DEBUG
+ border_width = 5;
+#else
+ border_width = 0;
+#endif
+ col_border = BlackPixel (gstroke_disp, screen);
+
+ gstroke_window = XCreateSimpleWindow (gstroke_disp, wind,
+ 0, 0,
+ hints.width - 2 * border_width,
+ hints.height - 2 * border_width,
+ border_width,
+ col_border, col_background);
+
+ gstroke_gc = XCreateGC (gstroke_disp, gstroke_window, 0, NULL);
+
+ XSetFunction (gstroke_disp, gstroke_gc, GXinvert);
+
+ XChangeWindowAttributes (gstroke_disp, gstroke_window, mask, &w_attr);
+
+ XSetLineAttributes (gstroke_disp, gstroke_gc, 2, LineSolid,
+ CapButt, JoinMiter);
+ XMapRaised (gstroke_disp, gstroke_window);
+
+#if 0
+ /*FIXME: is this call really needed? If yes, does it need the real
+ argc and argv? */
+ hints.flags = PPosition | PSize;
+ XSetStandardProperties (gstroke_disp, gstroke_window, "gstroke_test", NULL,
+ (Pixmap)NULL, NULL, 0, &hints);
+
+
+ /* Receive the close window client message */
+ {
+ /* FIXME: is this really needed? If yes, something should be done
+ with wmdelete...*/
+ Atom wmdelete = XInternAtom (gstroke_disp, "WM_DELETE_WINDOW",
+ False);
+ XSetWMProtocols (gstroke_disp, gstroke_window, &wmdelete, True);
+ }
+#endif
+}
diff --git a/libgstroke/gnome-stroke.c b/libgstroke/gnome-stroke.c
new file mode 100644
index 0000000..0907310
--- /dev/null
+++ b/libgstroke/gnome-stroke.c
@@ -0,0 +1,289 @@
+/*
+ libgstroke - a GNOME stroke interface library
+ Copyright (c) 1996,1997,1998,1999,2000,2001 Mark F. Willey, ETLA Technical
+
+ See the file COPYING for distribution information.
+
+ This file contains the stroke recognition algorithm.
+*/
+
+#include "config.h"
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <math.h>
+#include <glib.h>
+#include <gtk/gtk.h>
+#include "gstroke.h"
+#include "gstroke-internal.h"
+
+
+void
+_gstroke_init (struct gstroke_metrics *metrics)
+{
+ if (metrics->pointList != NULL) {
+ /* FIXME: does this free the data too?*/
+ g_slist_free (metrics->pointList);
+ metrics->pointList = NULL;
+ metrics->point_count = 0;
+ }
+}
+
+/* figure out which bin the point falls in */
+static gint
+_gstroke_bin (p_point point_p, gint bound_x_1, gint bound_x_2,
+ gint bound_y_1, gint bound_y_2)
+{
+
+ gint bin_num = 1;
+
+ if (point_p->x > bound_x_1) bin_num += 1;
+ if (point_p->x > bound_x_2) bin_num += 1;
+ if (point_p->y > bound_y_1) bin_num += 3;
+ if (point_p->y > bound_y_2) bin_num += 3;
+
+ return bin_num;
+}
+
+gint
+_gstroke_trans (gchar *sequence, struct gstroke_metrics *metrics)
+{
+ GSList *crt_elem;
+ /* number of bins recorded in the stroke */
+ guint sequence_count = 0;
+
+ /* points-->sequence translation scratch variables */
+ gint prev_bin = 0;
+ gint current_bin = 0;
+ gint bin_count = 0;
+
+ /* flag indicating the start of a stroke - always count it in the sequence */
+ gint first_bin = TRUE;
+
+ /* bin boundary and size variables */
+ gint delta_x, delta_y;
+ gint bound_x_1, bound_x_2;
+ gint bound_y_1, bound_y_2;
+
+
+ /* determine size of grid */
+ delta_x = metrics->max_x - metrics->min_x;
+ delta_y = metrics->max_y - metrics->min_y;
+
+ /* calculate bin boundary positions */
+ bound_x_1 = metrics->min_x + (delta_x / 3);
+ bound_x_2 = metrics->min_x + 2 * (delta_x / 3);
+
+ bound_y_1 = metrics->min_y + (delta_y / 3);
+ bound_y_2 = metrics->min_y + 2 * (delta_y / 3);
+
+ if (delta_x > GSTROKE_SCALE_RATIO * delta_y) {
+ bound_y_1 = (metrics->max_y + metrics->min_y - delta_x) / 2 + (delta_x / 3);
+ bound_y_2 = (metrics->max_y + metrics->min_y - delta_x) / 2 + 2 * (delta_x / 3);
+ } else if (delta_y > GSTROKE_SCALE_RATIO * delta_x) {
+ bound_x_1 = (metrics->max_x + metrics->min_x - delta_y) / 2 + (delta_y / 3);
+ bound_x_2 = (metrics->max_x + metrics->min_x - delta_y) / 2 + 2 * (delta_y / 3);
+ }
+
+#if 0
+ printf ("DEBUG:: point count: %d\n", metrics->point_count);
+ printf ("DEBUG:: metrics->min_x: %d\n", metrics->min_x);
+ printf ("DEBUG:: metrics->max_x: %d\n", metrics->max_x);
+ printf ("DEBUG:: metrics->min_y: %d\n", metrics->min_y);
+ printf ("DEBUG:: metrics->max_y: %d\n", metrics->max_y);
+ printf ("DEBUG:: delta_x: %d\n", delta_x);
+ printf ("DEBUG:: delta_y: %d\n", delta_y);
+ printf ("DEBUG:: bound_x_1: %d\n", bound_x_1);
+ printf ("DEBUG:: bound_x_2: %d\n", bound_x_2);
+ printf ("DEBUG:: bound_y_1: %d\n", bound_y_1);
+ printf ("DEBUG:: bound_y_2: %d\n", bound_y_2);
+#endif
+
+ /*
+ build string by placing points in bins, collapsing bins and
+ discarding those with too few points... */
+
+ crt_elem = metrics->pointList;
+ while (crt_elem != NULL)
+ {
+ /* figure out which bin the point falls in */
+
+ /*printf ("X = %d Y = %d\n", ((p_point)crt_elem->data)->x,
+ ((p_point)crt_elem->data)->y); */
+
+
+ current_bin = _gstroke_bin ((p_point)crt_elem->data, bound_x_1,
+ bound_x_2, bound_y_1, bound_y_2);
+
+ /* if this is the first point, consider it the previous bin, too. */
+ if (prev_bin == 0)
+ prev_bin = current_bin;
+
+ /*printf ("DEBUG:: current bin: %d x=%d y = %d\n", current_bin,
+ ((p_point)crt_elem->data)->x,
+ ((p_point)crt_elem->data)->y); */
+
+ if (prev_bin == current_bin)
+ bin_count++;
+ else {
+ /* we are moving to a new bin -- consider adding to the sequence */
+ if ((bin_count > (metrics->point_count * GSTROKE_BIN_COUNT_PERCENT))
+ || (first_bin == TRUE)) {
+
+ //gchar val = '0' + prev_bin;
+ //printf ("%c", val);fflush (stdout);
+ //g_string_append (&sequence, &val);
+
+ first_bin = FALSE;
+ sequence[sequence_count++] = '0' + prev_bin;
+ /* printf ("DEBUG:: adding sequence: %d\n", prev_bin); */
+
+ }
+
+ /* restart counting points in the new bin */
+ bin_count=0;
+ prev_bin = current_bin;
+ }
+
+ /* move to next point, freeing current point from list */
+
+ free (crt_elem->data);
+ crt_elem = g_slist_next (crt_elem);
+ }
+ /* add the last run of points to the sequence */
+ sequence[sequence_count++] = '0' + current_bin;
+ /* printf ("DEBUG:: adding final sequence: %d\n", current_bin); */
+
+ _gstroke_init (metrics);
+
+ {
+ // FIXME: get rid of this block
+ //gchar val = '0' + current_bin;
+ //printf ("%c\n", val);fflush (stdout);
+ //g_string_append (&sequence, '\0');
+ sequence[sequence_count] = '\0';
+ }
+
+ return TRUE;
+}
+
+/* my plan is to make a stroke training program where you can enter all of
+the variations of slop that map to a canonical set of strokes. When the
+application calls gstroke_canonical, it gets one of the recognized strokes,
+or "", if it's not a recognized variation. I will probably use a hash
+table. Right now, it just passes the values through to gstroke_trans */
+gint
+_gstroke_canonical (gchar *sequence, struct gstroke_metrics *metrics)
+{
+ return _gstroke_trans (sequence, metrics);
+}
+
+
+void
+_gstroke_record (gint x, gint y, struct gstroke_metrics *metrics)
+{
+ p_point new_point_p;
+ gint delx, dely;
+ float ix, iy;
+
+#if 0
+ printf ("%d:%d ", x, y); fflush (stdout);
+#endif
+
+ if (metrics->point_count < GSTROKE_MAX_POINTS) {
+ new_point_p = (p_point) g_malloc (sizeof (struct s_point));
+
+ if (metrics->pointList == NULL) {
+
+ /* first point in list - initialize metrics */
+ metrics->min_x = 10000;
+ metrics->min_y = 10000;
+ metrics->max_x = -1;
+ metrics->max_y = -1;
+
+ metrics->pointList = (GSList*) g_malloc (sizeof (GSList));
+
+ metrics->pointList->data = new_point_p;
+ metrics->pointList->next = NULL;
+ metrics->point_count = 0;
+
+ } else {
+
+#define LAST_POINT ((p_point)(g_slist_last (metrics->pointList)->data))
+
+ /* interpolate between last and current point */
+ delx = x - LAST_POINT->x;
+ dely = y - LAST_POINT->y;
+
+ if (abs(delx) > abs(dely)) { /* step by the greatest delta direction */
+ iy = LAST_POINT->y;
+
+ /* go from the last point to the current, whatever direction it may be */
+ for (ix = LAST_POINT->x; (delx > 0) ? (ix < x) : (ix > x); ix += (delx > 0) ? 1 : -1) {
+
+ /* step the other axis by the correct increment */
+ iy += fabs(((float) dely / (float) delx)) * (float) ((dely < 0) ? -1.0 : 1.0);
+
+ /* add the interpolated point */
+ new_point_p->x = ix;
+ new_point_p->y = iy;
+ g_slist_append (metrics->pointList, new_point_p);
+
+ /* update metrics */
+ if (((gint) ix) < metrics->min_x) metrics->min_x = (gint) ix;
+ if (((gint) ix) > metrics->max_x) metrics->max_x = (gint) ix;
+ if (((gint) iy) < metrics->min_y) metrics->min_y = (gint) iy;
+ if (((gint) iy) > metrics->max_y) metrics->max_y = (gint) iy;
+ metrics->point_count++;
+
+ new_point_p = (p_point) malloc (sizeof(struct s_point));
+ }
+ } else { /* same thing, but for dely larger than delx case... */
+ ix = LAST_POINT->x;
+
+ /* go from the last point to the current, whatever direction it may be
+ */
+ for (iy = LAST_POINT->y; (dely > 0) ? (iy < y) : (iy > y); iy += (dely > 0) ? 1 : -1) {
+
+ /* step the other axis by the correct increment */
+ ix += fabs(((float) delx / (float) dely)) * (float) ((delx < 0) ? -1.0 : 1.0);
+
+ /* add the interpolated point */
+ new_point_p->y = iy;
+ new_point_p->x = ix;
+ g_slist_append(metrics->pointList, new_point_p);
+
+ /* update metrics */
+ if (((gint) ix) < metrics->min_x) metrics->min_x = (gint) ix;
+ if (((gint) ix) > metrics->max_x) metrics->max_x = (gint) ix;
+ if (((gint) iy) < metrics->min_y) metrics->min_y = (gint) iy;
+ if (((gint) iy) > metrics->max_y) metrics->max_y = (gint) iy;
+ metrics->point_count++;
+
+ new_point_p = (p_point) malloc (sizeof(struct s_point));
+ }
+ }
+
+ /* add the sampled point */
+ g_slist_append(metrics->pointList, new_point_p);
+ }
+
+ /* record the sampled point values */
+ new_point_p->x = x;
+ new_point_p->y = y;
+
+#if 0
+ {
+ GSList *crt = metrics->pointList;
+ printf ("Record ");
+ while (crt != NULL)
+ {
+ printf ("(%d,%d)", ((p_point)crt->data)->x, ((p_point)crt->data)->y);
+ crt = g_slist_next (crt);
+ }
+ printf ("\n");
+ }
+#endif
+ }
+}
diff --git a/libgstroke/gstroke-internal.h b/libgstroke/gstroke-internal.h
new file mode 100644
index 0000000..4faaa89
--- /dev/null
+++ b/libgstroke/gstroke-internal.h
@@ -0,0 +1,41 @@
+/* This file is to be used internally by the libgstroke implementation.
+ It should not be installed or used elsewhere.
+
+ See the file COPYING for distribution information.
+*/
+
+#ifndef _GSTROKE_INTERNAL_H_
+#define _GSTROKE_INTERNAL_H_
+
+/* metrics for stroke, they are used while processing a stroke, this
+ structure should be stored in local widget storage */
+struct gstroke_metrics {
+ GSList *pointList; /* point list */
+ gint min_x;
+ gint min_y;
+ gint max_x;
+ gint max_y;
+ gint point_count;
+};
+
+#define GSTROKE_METRICS "gstroke_metrics"
+
+/* translate stroke to sequence */
+gint _gstroke_trans (gchar *sequence, struct gstroke_metrics *metrics);
+gint _gstroke_canonical (gchar* sequence, struct gstroke_metrics *metrics);
+
+/* record point in stroke */
+void _gstroke_record (gint x, gint y, struct gstroke_metrics *metrics);
+
+/* initialize stroke functions */
+void _gstroke_init (struct gstroke_metrics*);
+
+/* structure for holding point data */
+struct s_point {
+ gint x;
+ gint y;
+};
+
+typedef struct s_point *p_point;
+
+#endif
diff --git a/libgstroke/gstroke.h b/libgstroke/gstroke.h
new file mode 100644
index 0000000..fc5413a
--- /dev/null
+++ b/libgstroke/gstroke.h
@@ -0,0 +1,43 @@
+/*
+ libgstroke - a GNOME stroke interface library
+ Copyright (c) 1996,1997,1998,1999,2000,2001 Mark F. Willey, ETLA Technical
+
+ See the file COPYING for distribution information.
+*/
+
+/* largest number of points allowed to be sampled */
+#ifndef _GSTROKE_H_
+#define _GSTROKE_H_
+
+#define GSTROKE_MAX_POINTS 10000
+
+/* number of sample points required to have a valid stroke */
+#define GSTROKE_MIN_POINTS 50
+
+/* maximum number of numbers in stroke */
+#define GSTROKE_MAX_SEQUENCE 32
+
+/* threshold of size of smaller axis needed for it to define its own
+ bin size */
+#define GSTROKE_SCALE_RATIO 4
+
+/* minimum percentage of points in bin needed to add to sequence */
+#define GSTROKE_BIN_COUNT_PERCENT 0.07
+
+
+/* the mouse button used for strokes */
+#define GSTROKE_MOUSE_BUTTON 2
+
+/* enable strokes for the widget */
+void gstroke_enable (GtkWidget *widget);
+
+guint gstroke_signal_connect (GtkWidget *widget,
+ const gchar *name,
+ GtkSignalFunc func,
+ gpointer data);
+
+/* frees all the memory allocated for stroke, should be called when
+ the widget is destroyed*/
+void gstroke_cleanup (GtkWidget *widget);
+
+#endif