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//
// "$Id: fl_plastic.cxx,v 1.1.2.19 2003/05/19 14:56:42 easysw Exp $"
//
// "Plastic" drawing routines for the Fast Light Tool Kit (FLTK).
//
// These box types provide a cross between Aqua and KDE buttons; kindof
// like translucent plastic buttons...
//
// Copyright 2001-2003 by Michael Sweet.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems to "fltk-bugs@fltk.org".
//
// Box drawing code for an obscure box type.
// These box types are in seperate files so they are not linked
// in if not used.
#include <FL/Fl.H>
#include <FL/fl_draw.H>
#include "flstring.h"
//
// Uncomment the following line to restore the old plastic box type
// appearance.
//
//#define USE_OLD_PLASTIC_BOX
#define USE_OLD_PLASTIC_COLOR
extern uchar *fl_gray_ramp();
inline Fl_Color shade_color(uchar gc, Fl_Color bc) {
#ifdef USE_OLD_PLASTIC_COLOR
return fl_color_average((Fl_Color)gc, bc, 0.75f);
#else
unsigned grgb = Fl::get_color((Fl_Color)gc),
brgb = Fl::get_color(bc);
int red, green, blue, gray;
gray = ((grgb >> 24) & 255);
red = gray * ((brgb >> 24) & 255) / 255 + gray * gray / 510;
gray = ((grgb >> 16) & 255);
green = gray * ((brgb >> 16) & 255) / 255 + gray * gray / 510;
gray = ((grgb >> 8) & 255);
blue = gray * ((brgb >> 8) & 255) / 255 + gray * gray / 510;
if (red > 255)
red = 255;
if (green > 255)
green = 255;
if (blue > 255)
blue = 255;
if (Fl::draw_box_active())
return fl_rgb_color(red, green, blue);
else
return fl_color_average(FL_GRAY, fl_rgb_color(red, green, blue), 0.75f);
#endif // USE_OLD_PLASTIC_COLOR
}
static void shade_frame(int x, int y, int w, int h, const char *c, Fl_Color bc) {
uchar *g = fl_gray_ramp();
int b = strlen(c) / 4 + 1;
for (x += b, y += b, w -= 2 * b, h -= 2 * b; b > 1; b --)
{
// Draw lines around the perimeter of the button, 4 colors per
// circuit.
fl_color(shade_color(g[*c++], bc));
fl_line(x, y + h + b, x + w - 1, y + h + b, x + w + b - 1, y + h);
fl_color(shade_color(g[*c++], bc));
fl_line(x + w + b - 1, y + h, x + w + b - 1, y, x + w - 1, y - b);
fl_color(shade_color(g[*c++], bc));
fl_line(x + w - 1, y - b, x, y - b, x - b, y);
fl_color(shade_color(g[*c++], bc));
fl_line(x - b, y, x - b, y + h, x, y + h + b);
}
}
static void shade_rect(int x, int y, int w, int h, const char *c, Fl_Color bc)
{
uchar *g = fl_gray_ramp();
int i, j;
int clen = strlen(c) - 1;
int chalf = clen / 2;
int cstep = 1;
if (h < (w * 2)) {
// Horizontal shading...
if (clen >= h) cstep = 2;
for (i = 0, j = 0; j < chalf; i ++, j += cstep) {
// Draw the top line and points...
fl_color(shade_color(g[c[i]], bc));
fl_xyline(x + 1, y + i, x + w - 1);
fl_color(shade_color(g[c[i] - 2], bc));
fl_point(x, y + i + 1);
fl_point(x + w - 1, y + i + 1);
// Draw the bottom line and points...
fl_color(shade_color(g[c[clen - i]], bc));
fl_xyline(x + 1, y + h - i, x + w - 1);
fl_color(shade_color(g[c[clen - i] - 2], bc));
fl_point(x, y + h - i);
fl_point(x + w - 1, y + h - i);
}
// Draw the interior and sides...
i = chalf / cstep;
fl_color(shade_color(g[c[chalf]], bc));
fl_rectf(x + 1, y + i, w - 2, h - 2 * i + 1);
fl_color(shade_color(g[c[chalf] - 2], bc));
fl_yxline(x, y + i, y + h - i);
fl_yxline(x + w - 1, y + i, y + h - i);
} else {
// Vertical shading...
if (clen >= w) cstep = 2;
for (i = 0, j = 0; j < chalf; i ++, j += cstep) {
// Draw the left line and points...
fl_color(shade_color(g[c[i]], bc));
fl_yxline(x + i, y + 1, y + h - 1);
fl_color(shade_color(g[c[i] - 2], bc));
fl_point(x + i + 1, y);
fl_point(x + i + 1, y + h - 1);
// Draw the right line and points...
fl_color(shade_color(g[c[clen - i]], bc));
fl_yxline(x + w - 1 - i, y + 1, y + h - 1);
fl_color(shade_color(g[c[clen - i] - 2], bc));
fl_point(x + w - 1 - i, y);
fl_point(x + w - 1 - i, y + h - 1);
}
// Draw the interior, top, and bottom...
i = chalf / cstep;
fl_color(shade_color(g[c[chalf]], bc));
fl_rectf(x + i, y + 1, w - 2 * i, h - 2);
fl_color(shade_color(g[c[chalf] - 2], bc));
fl_xyline(x + i, y, x + w - i);
fl_xyline(x + i, y + h - 1, x + w - i);
}
}
static void up_frame(int x, int y, int w, int h, Fl_Color c) {
shade_frame(x, y, w, h - 1, "KLDIIJLM", c);
}
static void up_box(int x, int y, int w, int h, Fl_Color c) {
#ifdef USE_OLD_PLASTIC_BOX
shade_rect(x + 2, y + 2, w - 4, h - 5, "RVQNOPQRSTUVWVQ", c);
up_frame(x, y, w, h, c);
#else
shade_rect(x + 1, y + 1, w - 2, h - 3, "RVQNOPQRSTUVWVQ", c);
shade_frame(x, y, w, h - 1, "IJLM", c);
#endif // USE_OLD_PLASTIC_BOX
}
static void thin_up_box(int x, int y, int w, int h, Fl_Color c) {
#ifdef USE_OLD_PLASTIC_BOX
shade_rect(x + 2, y + 2, w - 4, h - 5, "RVQNOPQRSTUVWVQ", c);
up_frame(x, y, w, h, c);
#else
shade_rect(x + 1, y + 1, w - 2, h - 3, "RQOQSUWQ", c);
shade_frame(x, y, w, h - 1, "IJLM", c);
#endif // USE_OLD_PLASTIC_BOX
}
static void down_frame(int x, int y, int w, int h, Fl_Color c) {
shade_frame(x, y, w, h - 1, "LLRRTTLL", c);
}
static void down_box(int x, int y, int w, int h, Fl_Color c) {
shade_rect(x + 2, y + 2, w - 4, h - 5, "STUVWWWVT", c);
down_frame(x, y, w, h, c);
}
extern void fl_internal_boxtype(Fl_Boxtype, Fl_Box_Draw_F*);
Fl_Boxtype fl_define_FL_PLASTIC_UP_BOX() {
fl_internal_boxtype(_FL_PLASTIC_UP_BOX, up_box);
fl_internal_boxtype(_FL_PLASTIC_DOWN_BOX, down_box);
fl_internal_boxtype(_FL_PLASTIC_UP_FRAME, up_frame);
fl_internal_boxtype(_FL_PLASTIC_DOWN_FRAME, down_frame);
fl_internal_boxtype(_FL_PLASTIC_THIN_UP_BOX, thin_up_box);
fl_internal_boxtype(_FL_PLASTIC_THIN_DOWN_BOX, down_box);
return _FL_PLASTIC_UP_BOX;
}
//
// End of "$Id: fl_plastic.cxx,v 1.1.2.19 2003/05/19 14:56:42 easysw Exp $".
//
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