mirror of https://github.com/fltk/fltk
151 lines
4.3 KiB
C++
151 lines
4.3 KiB
C++
//
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// "$Id: color_chooser.cxx,v 1.6.2.3.2.1 2001/08/05 23:58:54 easysw Exp $"
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//
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// Color chooser test program for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2001 by Bill Spitzak and others.
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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 to "fltk-bugs@fltk.org".
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//
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#include <FL/Fl.H>
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#include <FL/Fl_Window.H>
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#include <FL/Fl_Box.H>
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#include <FL/Fl_Button.H>
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#include <FL/fl_show_colormap.H>
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#include <FL/Fl_Color_Chooser.H>
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#include <FL/Fl_Image.H>
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#include <FL/x.H>
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#include <FL/fl_draw.H>
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#include <stdlib.h>
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#include <stdio.h>
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#ifndef WIN32
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#include "list_visuals.cxx"
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#endif
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int width = 75;
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int height = 75;
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uchar *image;
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void make_image() {
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image = new uchar[3*width*height];
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uchar *p = image;
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for (int y = 0; y < height; y++) {
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double Y = double(y)/(height-1);
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for (int x = 0; x < width; x++) {
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double X = double(x)/(width-1);
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*p++ = uchar(255*((1-X)*(1-Y))); // red in upper-left
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*p++ = uchar(255*((1-X)*Y)); // green in lower-left
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*p++ = uchar(255*(X*Y)); // blue in lower-right
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}
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}
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}
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class Pens : public Fl_Box {
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void draw();
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public:
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Pens(int X, int Y, int W, int H, const char* L)
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: Fl_Box(X,Y,W,H,L) {}
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};
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void Pens::draw() {
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// use every color in the gray ramp:
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for (int i = 0; i < 3*8; i++) {
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fl_color((Fl_Color)(FL_GRAY_RAMP+i));
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fl_line(x()+i, y(), x()+i, y()+h());
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}
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}
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Fl_Color c = FL_GRAY;
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#define fullcolor_cell (FL_FREE_COLOR)
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void cb1(Fl_Widget *, void *v) {
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c = fl_show_colormap(c);
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Fl_Box* b = (Fl_Box*)v;
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b->color(c);
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b->parent()->redraw();
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}
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void cb2(Fl_Widget *, void *v) {
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uchar r,g,b;
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Fl::get_color(c,r,g,b);
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if (!fl_color_chooser("New color:",r,g,b)) return;
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c = fullcolor_cell;
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Fl::set_color(fullcolor_cell,r,g,b);
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Fl_Box* bx = (Fl_Box*)v;
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bx->color(fullcolor_cell);
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bx->parent()->redraw();
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}
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int main(int argc, char ** argv) {
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Fl::set_color(fullcolor_cell,145,159,170);
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Fl_Window window(400,400);
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Fl_Box box(50,50,300,300);
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box.box(FL_THIN_DOWN_BOX);
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c = fullcolor_cell;
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box.color(c);
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Fl_Button b1(140,120,120,30,"fl_show_colormap");
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b1.callback(cb1,&box);
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Fl_Button b2(140,160,120,30,"fl_choose_color");
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b2.callback(cb2,&box);
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Fl_Box image_box(140,200,120,120,0);
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make_image();
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(new Fl_RGB_Image(image, width, height))->label(&image_box);
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Fl_Box b(140,320,120,0,"Example of fl_draw_image()");
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Pens p(80,200,3*8,120,"lines");
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p.align(FL_ALIGN_TOP);
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int i = 1;
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if (!Fl::args(argc,argv,i) || i != argc-1) {
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printf("usage: %s <switches> visual-number\n"
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" - : default visual\n"
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" r : call Fl::visual(FL_RGB)\n"
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" c : call Fl::own_colormap()\n",argv[0]);
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#ifndef WIN32
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printf(" # : use this visual with an empty colormap:\n");
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list_visuals();
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#endif
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puts(Fl::help);
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exit(1);
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}
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if (argv[i][0] == 'r') {
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if (!Fl::visual(FL_RGB)) printf("Fl::visual(FL_RGB) returned false.\n");
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} else if (argv[i][0] == 'c') {
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Fl::own_colormap();
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} else if (argv[i][0] != '-') {
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#ifndef WIN32
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int visid = atoi(argv[i]);
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fl_open_display();
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XVisualInfo templt; int num;
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templt.visualid = visid;
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fl_visual = XGetVisualInfo(fl_display, VisualIDMask, &templt, &num);
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if (!fl_visual) Fl::fatal("No visual with id %d",visid);
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fl_colormap = XCreateColormap(fl_display, RootWindow(fl_display,fl_screen),
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fl_visual->visual, AllocNone);
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fl_xpixel(FL_BLACK); // make sure black is allocated
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#else
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Fl::fatal("Visual id's not supported on MSWindows");
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#endif
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}
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window.show(argc,argv);
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return Fl::run();
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}
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//
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// End of "$Id: color_chooser.cxx,v 1.6.2.3.2.1 2001/08/05 23:58:54 easysw Exp $".
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//
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