41 lines
1.4 KiB
C++
41 lines
1.4 KiB
C++
//
|
|
// Minimal program for displaying an animated GIF file
|
|
// with the Fl_Anim_GIF_Image class.
|
|
//
|
|
#include <FL/Fl_Double_Window.H>
|
|
#include <FL/Fl_Box.H>
|
|
#include <FL/Fl_Anim_GIF_Image.H>
|
|
#include <FL/Fl.H>
|
|
#include <stdio.h>
|
|
|
|
int main(int argc, char *argv[]) {
|
|
Fl_Double_Window win(400, 300, "Fl_Anim_GIF_Image demo");
|
|
|
|
// prepare a canvas (widget) for the animation
|
|
Fl_Box canvas(20, 40, win.w()-40, win.h()-80, "Hello from FLTK GIF-animation!");
|
|
canvas.align(FL_ALIGN_TOP|FL_ALIGN_IMAGE_BACKDROP);
|
|
canvas.labelsize(20);
|
|
|
|
win.resizable(win);
|
|
win.end();
|
|
win.show(1, argv);
|
|
|
|
// Create and load the animated gif as image
|
|
// of the `canvas` widget and start it immediately.
|
|
// We use the `DONT_RESIZE_CANVAS` flag here to tell the
|
|
// animation *not* to change the canvas size (which is the default).
|
|
const char *default_image = "../test/images/fltk_animated.gif";
|
|
Fl_Anim_GIF_Image animgif(/*name_=*/ argv[1] ? argv[1] : default_image,
|
|
/*canvas_=*/ &canvas,
|
|
/*flags_=*/ Fl_Anim_GIF_Image::DONT_RESIZE_CANVAS);
|
|
// resize animation to canvas size
|
|
animgif.scale(canvas.w(), canvas.h(), /*can_expand*/1, /*proportional*/1);
|
|
|
|
// check if loading succeeded
|
|
printf("%s: ld=%d, valid=%d, frames=%d, size=%dx%d\n",
|
|
animgif.name(), animgif.ld(), animgif.valid(),
|
|
animgif.frames(), animgif.canvas_w(), animgif.canvas_h());
|
|
if (animgif.valid())
|
|
return Fl::run();
|
|
}
|