test/pixmap_browser.cxx

   1 //
   2 // "$Id: pixmap_browser.cxx 8344 2011-01-31 17:46:55Z manolo $"
   3 //
   4 // A shared image test program for the Fast Light Tool Kit (FLTK).
   5 //
   6 // Copyright 1998-2010 by Bill Spitzak and others.
   7 //
   8 // This library is free software; you can redistribute it and/or
   9 // modify it under the terms of the GNU Library General Public
  10 // License as published by the Free Software Foundation; either
  11 // version 2 of the License, or (at your option) any later version.
  12 //
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 // Library General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU Library General Public
  19 // License along with this library; if not, write to the Free Software
  20 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  21 // USA.
  22 //
  23 // Please report all bugs and problems on the following page:
  24 //
  25 //     http://www.fltk.org/str.php
  26 //
  27
  28 #include <FL/Fl.H>
  29 #include <FL/Fl_Box.H>
  30 #include <FL/Fl_Double_Window.H>
  31 #include <FL/Fl_Button.H>
  32 #include <FL/Fl_Shared_Image.H>
  33 #include <string.h>
  34 #include <errno.h>
  35 #include <FL/Fl_File_Chooser.H>
  36 #include <FL/fl_message.H>
  37
  38 Fl_Box *b;
  39 Fl_Double_Window *w;
  40 Fl_Shared_Image *img;
  41
  42
  43 static char name[1024];
  44
  45 void load_file(const char *n) {
  46   if (img) {
  47     img->release();
  48     img = 0L;
  49   }
  50   if (fl_filename_isdir(n)) {
  51     b->label("@fileopen"); // show a generic folder
  52     b->labelsize(64);
  53     b->labelcolor(FL_LIGHT2);
  54     b->image(0);
  55     b->redraw();
  56     return;
  57   }
  58   img = Fl_Shared_Image::get(n);
  59   if (!img) {
  60     b->label("@filenew"); // show an empty document
  61     b->labelsize(64);
  62     b->labelcolor(FL_LIGHT2);
  63     b->image(0);
  64     b->redraw();
  65     return;
  66   }
  67   if (img->w() > b->w() || img->h() > b->h()) {
  68     Fl_Image *temp;
  69     if (img->w() > img->h()) temp = img->copy(b->w(), b->h() * img->h() / img->w());
  70     else temp = img->copy(b->w() * img->w() / img->h(), b->h());
  71
  72     img->release();
  73     img = (Fl_Shared_Image *)temp;
  74   }
  75   b->label(name);
  76   b->labelsize(14);
  77   b->labelcolor(FL_FOREGROUND_COLOR);
  78   b->image(img);
  79   b->redraw();
  80 }
  81
  82 void file_cb(const char *n) {
  83   if (!strcmp(name,n)) return;
  84   load_file(n);
  85   strcpy(name,n);
  86   w->label(name);
  87 }
  88
  89 void button_cb(Fl_Widget *,void *) {
  90   fl_file_chooser_callback(file_cb);
  91   const char *fname = fl_file_chooser("Image file?","*.{bm,bmp,gif,jpg,pbm,pgm,png,ppm,xbm,xpm}", name);
  92   puts(fname ? fname : "(null)"); fflush(stdout);
  93   fl_file_chooser_callback(0);
  94 }
  95
  96 int dvisual = 0;
  97 int arg(int, char **argv, int &i) {
  98   if (argv[i][1] == '8') {dvisual = 1; i++; return 1;}
  99   return 0;
 100 }
 101
 102 int main(int argc, char **argv) {
 103   int i = 1;
 104
 105   fl_register_images();
 106
 107   Fl::args(argc,argv,i,arg);
 108
 109   Fl_Double_Window window(400,435); ::w = &window;
 110   Fl_Box b(10,45,380,380); ::b = &b;
 111   b.box(FL_THIN_DOWN_BOX);
 112   b.align(FL_ALIGN_INSIDE|FL_ALIGN_CENTER);
 113   Fl_Button button(150,5,100,30,"load");
 114   button.callback(button_cb);
 115   if (!dvisual) Fl::visual(FL_RGB);
 116   if (argv[1]) load_file(argv[1]);
 117   window.resizable(window);
 118   window.show(argc,argv);
 119   return Fl::run();
 120 }
 121
 122 //
 123 // End of "$Id: pixmap_browser.cxx 8344 2011-01-31 17:46:55Z manolo $".
 124 //