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// "$Id: fltk.cpp,v 1.1 2002/01/30 23:51:19 edgomez Exp $"
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// fl_draw_image test program for the Fast Light Tool Kit (FLTK).
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// Be sure to try every visual with the -v switch and try -m (monochrome)
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// This program requires either the libjpeg.a library or an internal DD
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// library to read images (this is chosen by the presence of the "DD"
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// To get the jpeg library:
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// The "official" archive site for this software is ftp.uu.net (Internet
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// address 192.48.96.9). The most recent released version can always be
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// found there in directory graphics/jpeg. This particular version will
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// be archived as graphics/jpeg/jpegsrc.v6a.tar.gz.
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// The makefile assummes you decompressed and build these in a directory
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// called "jpeg-6a" in the same location as the "FL" directory.
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// Copyright 1998-2000 by Bill Spitzak and others.
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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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// 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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// 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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// Please report all bugs and problems to "fltk-bugs@fltk.org".
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#include <FL/fl_draw.H>
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void readtheimage(const char *name); // below
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#pragma comment(lib, "libjpeg.lib")
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////////////////////////////////////////////////////////////////
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#include <FL/Fl_Window.H>
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class image_window : public Fl_Window {
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image_window(int w,int h) : Fl_Window(w,h) {box(FL_NO_BOX);}
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void image_window::draw() {
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fl_draw_image_mono(ibuffer+1,0,0,width,height,depth,linedelta);
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fl_draw_image(ibuffer,0,0,width,height,depth,linedelta);
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////////////////////////////////////////////////////////////////
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#include "list_visuals.cxx"
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////////////////////////////////////////////////////////////////
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int arg(int argc, char **argv, int &i) {
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if (argv[i][1] == 'm') {mono = 1; i++; return 1;}
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if (argv[i][1] == 'v') {
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if (i+1 >= argc) return 0;
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visid = atoi(argv[i+1]);
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int main(int argc, char ** argv) {
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if (!Fl::args(argc,argv,i,arg) || i != argc-1) {
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fprintf(stderr,"usage: %s <switches> image_file\n"
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" -v # : use visual\n"
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readtheimage(argv[i]);
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image_window *window = new image_window(width,height);
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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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fprintf(stderr, "No visual with id %d, use one of:\n",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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window->show(argc,argv);
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////////////////////////////////////////////////////////////////
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void readtheimage(const char *name) {
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struct jpeg_decompress_struct cinfo;
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struct jpeg_error_mgr jerr;
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FILE * infile = fopen(name, "rb");
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fprintf(stderr, "can't open %s\n", name);
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cinfo.err = jpeg_std_error(&jerr);
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jpeg_create_decompress(&cinfo);
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jpeg_stdio_src(&cinfo, infile);
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jpeg_read_header(&cinfo, TRUE);
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jpeg_start_decompress(&cinfo);
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width = cinfo.output_width;
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height = cinfo.output_height;
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depth = cinfo.output_components;
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ibuffer = new uchar[width*height*depth];
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// for (int i=0; i<height; i++) {
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for (int i=height; i--; ) {
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jpeg_read_scanlines(&cinfo, &rp, 1);
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jpeg_finish_decompress(&cinfo);
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jpeg_destroy_decompress(&cinfo);
b'\\ No newline at end of file'
added
removed
test/Fltk/fltk.cpp
