mirror of https://github.com/fltk/fltk
382 lines
11 KiB
C++
382 lines
11 KiB
C++
//
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// "$Id$"
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//
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// "Plastic" drawing routines for the Fast Light Tool Kit (FLTK).
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//
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// These box types provide a cross between Aqua and KDE buttons; kindof
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// like translucent plastic buttons...
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//
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// Copyright 2001-2005 by Michael Sweet.
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// USA.
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//
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// Please report all bugs and problems on the following page:
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//
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// http://www.fltk.org/str.php
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//
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// Box drawing code for an obscure box type.
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// These box types are in seperate files so they are not linked
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// in if not used.
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#include <FL/Fl.H>
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#include <FL/fl_draw.H>
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#include "flstring.h"
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//
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// Uncomment the following line to restore the old plastic box type
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// appearance.
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//
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//#define USE_OLD_PLASTIC_BOX
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#define USE_OLD_PLASTIC_COLOR
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extern uchar *fl_gray_ramp();
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inline Fl_Color shade_color(uchar gc, Fl_Color bc) {
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#ifdef USE_OLD_PLASTIC_COLOR
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return fl_color_average((Fl_Color)gc, bc, 0.75f);
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#else
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unsigned grgb = Fl::get_color((Fl_Color)gc),
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brgb = Fl::get_color(bc);
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int red, green, blue, gray;
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gray = ((grgb >> 24) & 255);
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red = gray * ((brgb >> 24) & 255) / 255 + gray * gray / 510;
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gray = ((grgb >> 16) & 255);
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green = gray * ((brgb >> 16) & 255) / 255 + gray * gray / 510;
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gray = ((grgb >> 8) & 255);
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blue = gray * ((brgb >> 8) & 255) / 255 + gray * gray / 510;
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if (red > 255)
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red = 255;
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if (green > 255)
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green = 255;
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if (blue > 255)
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blue = 255;
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if (Fl::draw_box_active())
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return fl_rgb_color(red, green, blue);
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else
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return fl_color_average(FL_GRAY, fl_rgb_color(red, green, blue), 0.75f);
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#endif // USE_OLD_PLASTIC_COLOR
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}
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static void frame_rect(int x, int y, int w, int h, const char *c, Fl_Color bc) {
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uchar *g = fl_gray_ramp();
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int b = strlen(c) / 4 + 1;
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for (x += b, y += b, w -= 2 * b, h -= 2 * b; b > 1; b --)
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{
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// Draw lines around the perimeter of the button, 4 colors per
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// circuit.
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fl_color(shade_color(g[*c++], bc));
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fl_line(x, y + h + b, x + w - 1, y + h + b, x + w + b - 1, y + h);
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fl_color(shade_color(g[*c++], bc));
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fl_line(x + w + b - 1, y + h, x + w + b - 1, y, x + w - 1, y - b);
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fl_color(shade_color(g[*c++], bc));
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fl_line(x + w - 1, y - b, x, y - b, x - b, y);
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fl_color(shade_color(g[*c++], bc));
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fl_line(x - b, y, x - b, y + h, x, y + h + b);
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}
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}
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static void frame_round(int x, int y, int w, int h, const char *c, Fl_Color bc) {
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uchar *g = fl_gray_ramp();
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int b = strlen(c) / 4 + 1;
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if (w==h) {
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for (; b > 1; b --, x ++, y ++, w -= 2, h -= 2)
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{
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fl_color(shade_color(g[*c++], bc));
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fl_arc(x, y, w, h, 45.0, 135.0);
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fl_color(shade_color(g[*c++], bc));
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fl_arc(x, y, w, h, 315.0, 405.0);
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fl_color(shade_color(g[*c++], bc));
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fl_arc(x, y, w, h, 225.0, 315.0);
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fl_color(shade_color(g[*c++], bc));
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fl_arc(x, y, w, h, 135.0, 225.0);
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}
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} else if (w>h) {
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int d = h/2;
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for (; b > 1; d--, b --, x ++, y ++, w -= 2, h -= 2)
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{
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fl_color(shade_color(g[*c++], bc));
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fl_arc(x, y, h, h, 90.0, 135.0);
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fl_xyline(x+d, y, x+w-d);
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fl_arc(x+w-h, y, h, h, 45.0, 90.0);
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fl_color(shade_color(g[*c++], bc));
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fl_arc(x+w-h, y, h, h, 315.0, 405.0);
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fl_color(shade_color(g[*c++], bc));
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fl_arc(x+w-h, y, h, h, 270.0, 315.0);
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fl_xyline(x+d, y+h-1, x+w-d);
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fl_arc(x, y, h, h, 225.0, 270.0);
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fl_color(shade_color(g[*c++], bc));
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fl_arc(x, y, h, h, 135.0, 225.0);
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}
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} else if (w<h) {
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int d = w/2;
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for (; b > 1; d--, b --, x ++, y ++, w -= 2, h -= 2)
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{
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fl_color(shade_color(g[*c++], bc));
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fl_arc(x, y, w, w, 45.0, 135.0);
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fl_color(shade_color(g[*c++], bc));
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fl_arc(x, y, w, w, 0.0, 45.0);
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fl_yxline(x+w-1, y+d, y+h-d);
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fl_arc(x, y+h-w, w, w, 315.0, 360.0);
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fl_color(shade_color(g[*c++], bc));
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fl_arc(x, y+h-w, w, w, 225.0, 315.0);
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fl_color(shade_color(g[*c++], bc));
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fl_arc(x, y+h-w, w, w, 180.0, 225.0);
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fl_yxline(x, y+d, y+h-d);
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fl_arc(x, y, w, w, 135.0, 180.0);
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}
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}
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}
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static void shade_rect(int x, int y, int w, int h, const char *c, Fl_Color bc) {
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uchar *g = fl_gray_ramp();
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int i, j;
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int clen = strlen(c) - 1;
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int chalf = clen / 2;
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int cstep = 1;
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if (h < (w * 2)) {
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// Horizontal shading...
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if (clen >= h) cstep = 2;
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for (i = 0, j = 0; j < chalf; i ++, j += cstep) {
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// Draw the top line and points...
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fl_color(shade_color(g[c[i]], bc));
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fl_xyline(x + 1, y + i, x + w - 2);
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fl_color(shade_color(g[c[i] - 2], bc));
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fl_point(x, y + i + 1);
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fl_point(x + w - 1, y + i + 1);
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// Draw the bottom line and points...
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fl_color(shade_color(g[c[clen - i]], bc));
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fl_xyline(x + 1, y + h - i, x + w - 2);
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fl_color(shade_color(g[c[clen - i] - 2], bc));
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fl_point(x, y + h - i);
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fl_point(x + w - 1, y + h - i);
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}
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// Draw the interior and sides...
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i = chalf / cstep;
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fl_color(shade_color(g[c[chalf]], bc));
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fl_rectf(x + 1, y + i, w - 2, h - 2 * i + 1);
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fl_color(shade_color(g[c[chalf] - 2], bc));
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fl_yxline(x, y + i, y + h - i);
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fl_yxline(x + w - 1, y + i, y + h - i);
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} else {
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// Vertical shading...
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if (clen >= w) cstep = 2;
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for (i = 0, j = 0; j < chalf; i ++, j += cstep) {
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// Draw the left line and points...
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fl_color(shade_color(g[c[i]], bc));
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fl_yxline(x + i, y + 1, y + h - 1);
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fl_color(shade_color(g[c[i] - 2], bc));
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fl_point(x + i + 1, y);
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fl_point(x + i + 1, y + h);
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// Draw the right line and points...
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fl_color(shade_color(g[c[clen - i]], bc));
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fl_yxline(x + w - 1 - i, y + 1, y + h - 1);
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fl_color(shade_color(g[c[clen - i] - 2], bc));
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fl_point(x + w - 2 - i, y);
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fl_point(x + w - 2 - i, y + h);
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}
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// Draw the interior, top, and bottom...
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i = chalf / cstep;
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fl_color(shade_color(g[c[chalf]], bc));
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fl_rectf(x + i, y + 1, w - 2 * i, h - 1);
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fl_color(shade_color(g[c[chalf] - 2], bc));
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fl_xyline(x + i, y, x + w - i);
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fl_xyline(x + i, y + h, x + w - i);
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}
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}
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static void shade_round(int x, int y, int w, int h, const char *c, Fl_Color bc) {
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uchar *g = fl_gray_ramp();
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int i;
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int clen = strlen(c) - 1;
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int chalf = clen / 2;
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if (w>h) {
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int d = h/2;
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const int na = 8;
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for (i=0; i<chalf; i++, d--, x++, y++, w-=2, h-=2)
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{
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fl_color(shade_color(g[c[i]], bc));
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fl_pie(x, y, h, h, 90.0, 135.0+i*na);
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fl_xyline(x+d, y, x+w-d);
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fl_pie(x+w-h, y, h, h, 45.0+i*na, 90.0);
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fl_color(shade_color(g[c[i] - 2], bc));
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fl_pie(x+w-h, y, h, h, 315.0+i*na, 405.0+i*na);
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fl_color(shade_color(g[c[clen - i]], bc));
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fl_pie(x+w-h, y, h, h, 270.0, 315.0+i*na);
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fl_xyline(x+d, y+h-1, x+w-d);
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fl_pie(x, y, h, h, 225.0+i*na, 270.0);
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fl_color(shade_color(g[c[clen - i] - 2], bc));
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fl_pie(x, y, h, h, 135.0+i*na, 225.0+i*na);
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}
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fl_color(shade_color(g[c[chalf]], bc));
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fl_rectf(x+d, y, w-h+1, h+1);
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fl_pie(x, y, h, h, 90.0, 270.0);
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fl_pie(x+w-h, y, h, h, 270.0, 90.0);
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} else {
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int d = w/2;
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const int na = 8;
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for (i=0; i<chalf; i++, d--, x++, y++, w-=2, h-=2)
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{
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fl_color(shade_color(g[c[i]], bc));
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fl_pie(x, y, w, w, 45.0+i*na, 135.0+i*na);
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fl_color(shade_color(g[c[i] - 2], bc));
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fl_pie(x, y, w, w, 0.0, 45.0+i*na);
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fl_yxline(x+w-1, y+d, y+h-d);
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fl_pie(x, y+h-w, w, w, 315.0+i*na, 360.0);
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fl_color(shade_color(g[c[clen - i]], bc));
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fl_pie(x, y+h-w, w, w, 225.0+i*na, 315.0+i*na);
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fl_color(shade_color(g[c[clen - i] - 2], bc));
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fl_pie(x, y+h-w, w, w, 180.0, 225.0+i*na);
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fl_yxline(x, y+d, y+h-d);
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fl_pie(x, y, w, w, 135.0+i*na, 180.0);
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}
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fl_color(shade_color(g[c[chalf]], bc));
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fl_rectf(x, y+d, w+1, h-w+1);
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fl_pie(x, y, w, w, 0.0, 180.0);
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fl_pie(x, y+h-w, w, w, 180.0, 360.0);
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}
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}
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static void up_frame(int x, int y, int w, int h, Fl_Color c) {
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frame_rect(x, y, w, h - 1, "KLDIIJLM", c);
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}
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static void narrow_thin_box(int x, int y, int w, int h, Fl_Color c) {
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if (h<=0 || w<=0) return;
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uchar *g = fl_gray_ramp();
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fl_color(shade_color(g['R'], c));
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fl_rectf(x+1, y+1, w-2, h-2);
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fl_color(shade_color(g['I'], c));
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if (w > 1) {
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fl_xyline(x+1, y, x+w-2);
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fl_xyline(x+1, y+h-1, x+w-2);
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}
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if (h > 1) {
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fl_yxline(x, y+1, y+h-2);
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fl_yxline(x+w-1, y+1, y+h-2);
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}
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}
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static void thin_up_box(int x, int y, int w, int h, Fl_Color c) {
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#ifdef USE_OLD_PLASTIC_BOX
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shade_rect(x + 2, y + 2, w - 4, h - 5, "RVQNOPQRSTUVWVQ", c);
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up_frame(x, y, w, h, c);
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#else
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if (w > 4 && h > 4) {
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shade_rect(x + 1, y + 1, w - 2, h - 3, "RQOQSUWQ", c);
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frame_rect(x, y, w, h - 1, "IJLM", c);
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} else {
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narrow_thin_box(x, y, w, h, c);
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}
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#endif // USE_OLD_PLASTIC_BOX
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}
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static void up_box(int x, int y, int w, int h, Fl_Color c) {
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#ifdef USE_OLD_PLASTIC_BOX
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shade_rect(x + 2, y + 2, w - 4, h - 5, "RVQNOPQRSTUVWVQ", c);
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up_frame(x, y, w, h, c);
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#else
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if (w > 8 && h > 8) {
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shade_rect(x + 1, y + 1, w - 2, h - 3, "RVQNOPQRSTUVWVQ", c);
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frame_rect(x, y, w, h - 1, "IJLM", c);
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} else {
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thin_up_box(x, y, w, h, c);
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}
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#endif // USE_OLD_PLASTIC_BOX
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}
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static void up_round(int x, int y, int w, int h, Fl_Color c) {
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shade_round(x, y, w, h, "RVQNOPQRSTUVWVQ", c);
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frame_round(x, y, w, h, "IJLM", c);
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}
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static void down_frame(int x, int y, int w, int h, Fl_Color c) {
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frame_rect(x, y, w, h - 1, "LLLLTTRR", c);
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}
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static void down_box(int x, int y, int w, int h, Fl_Color c) {
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if (w > 6 && h > 6) {
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shade_rect(x + 2, y + 2, w - 4, h - 5, "STUVWWWVT", c);
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down_frame(x, y, w, h, c);
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}
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else {
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narrow_thin_box(x, y, w, h, c);
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}
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}
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static void down_round(int x, int y, int w, int h, Fl_Color c) {
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shade_round(x, y, w, h, "STUVWWWVT", c);
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frame_round(x, y, w, h, "IJLM", c);
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}
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extern void fl_internal_boxtype(Fl_Boxtype, Fl_Box_Draw_F*);
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Fl_Boxtype fl_define_FL_PLASTIC_UP_BOX() {
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fl_internal_boxtype(_FL_PLASTIC_UP_BOX, up_box);
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fl_internal_boxtype(_FL_PLASTIC_DOWN_BOX, down_box);
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fl_internal_boxtype(_FL_PLASTIC_UP_FRAME, up_frame);
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fl_internal_boxtype(_FL_PLASTIC_DOWN_FRAME, down_frame);
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fl_internal_boxtype(_FL_PLASTIC_THIN_UP_BOX, thin_up_box);
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fl_internal_boxtype(_FL_PLASTIC_THIN_DOWN_BOX, down_box);
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fl_internal_boxtype(_FL_PLASTIC_ROUND_UP_BOX, up_round);
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fl_internal_boxtype(_FL_PLASTIC_ROUND_DOWN_BOX, down_round);
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return _FL_PLASTIC_UP_BOX;
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}
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//
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// End of "$Id$".
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//
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