fltk/test/image.cxx
Michael R Sweet 4b561b6e90 Updated copyright notices for all of the 1.0.x files.
Updated the configure script for *BSD and GCC 2.95 (-fno-exceptions)

Added install rule to documentation directory.

Dumped old packages directory; added traditional RPM spec file and EPM
list file (that replace all of the packages stuff)

The FLUID man page is now "fluid.1" for the formatted page and "fluid.man"
for the non-formatted page, since only IRIX uses pack'd formatted man pages.

Whew!


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.0@1090 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2000-04-25 22:17:00 +00:00

138 lines
3.9 KiB
C++

//
// "$Id: image.cxx,v 1.6.2.1 2000/04/25 22:16:55 mike Exp $"
//
// Fl_Image test program for the Fast Light Tool Kit (FLTK).
//
// Notice that Fl_Image is for a static, multiple-reuse image, such
// as an icon or postage stamp. Use fl_draw_image to go directly
// from an buffered image that changes often.
//
// Copyright 1998-2000 by Bill Spitzak and others.
//
// 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@easysw.com".
//
#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Button.H>
#include <FL/Fl_Image.H>
#include <stdio.h>
#include <stdlib.h>
int width = 75;
int height = 75;
uchar *image;
void make_image() {
image = new uchar[3*width*height];
uchar *p = image;
for (int y = 0; y < height; y++) {
double Y = double(y)/(height-1);
for (int x = 0; x < width; x++) {
double X = double(x)/(width-1);
*p++ = uchar(255*((1-X)*(1-Y))); // red in upper-left
*p++ = uchar(255*((1-X)*Y)); // green in lower-left
*p++ = uchar(255*(X*Y)); // blue in lower-right
}
}
}
#include <FL/Fl_Toggle_Button.H>
Fl_Toggle_Button *leftb,*rightb,*topb,*bottomb,*insideb;
Fl_Button *b;
Fl_Window *w;
void button_cb(Fl_Widget *,void *) {
int i = 0;
if (leftb->value()) i |= FL_ALIGN_LEFT;
if (rightb->value()) i |= FL_ALIGN_RIGHT;
if (topb->value()) i |= FL_ALIGN_TOP;
if (bottomb->value()) i |= FL_ALIGN_BOTTOM;
if (insideb->value()) i |= FL_ALIGN_INSIDE;
b->align(i);
w->redraw();
}
#include <FL/x.H>
#ifndef WIN32
#include "list_visuals.cxx"
#endif
int visid = -1;
int arg(int argc, char **argv, int &i) {
if (argv[i][1] == 'v') {
if (i+1 >= argc) return 0;
visid = atoi(argv[i+1]);
i += 2;
return 2;
}
return 0;
}
int main(int argc, char **argv) {
#ifndef WIN32
int i = 1;
if (Fl::args(argc,argv,i,arg) < argc) {
fprintf(stderr," -v # : use visual\n%s\n",Fl::help);
exit(1);
}
if (visid >= 0) {
fl_open_display();
XVisualInfo templt; int num;
templt.visualid = visid;
fl_visual = XGetVisualInfo(fl_display, VisualIDMask, &templt, &num);
if (!fl_visual) {
fprintf(stderr, "No visual with id %d, use one of:\n",visid);
list_visuals();
exit(1);
}
fl_colormap = XCreateColormap(fl_display, RootWindow(fl_display,fl_screen),
fl_visual->visual, AllocNone);
fl_xpixel(FL_BLACK); // make sure black is allocated in overlay visuals
} else {
Fl::visual(FL_RGB);
}
#endif
Fl_Window window(400,400); ::w = &window;
Fl_Button b(140,160,120,120,0); ::b = &b;
make_image();
(new Fl_Image(image, width, height))->label(&b);
leftb = new Fl_Toggle_Button(50,75,50,25,"left");
leftb->callback(button_cb);
rightb = new Fl_Toggle_Button(100,75,50,25,"right");
rightb->callback(button_cb);
topb = new Fl_Toggle_Button(150,75,50,25,"top");
topb->callback(button_cb);
bottomb = new Fl_Toggle_Button(200,75,50,25,"bottom");
bottomb->callback(button_cb);
insideb = new Fl_Toggle_Button(250,75,50,25,"inside");
insideb->callback(button_cb);
window.resizable(window);
window.end();
window.show(argc, argv);
return Fl::run();
}
//
// End of "$Id: image.cxx,v 1.6.2.1 2000/04/25 22:16:55 mike Exp $".
//