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#include <gtk/gtk.h>
#include "FreeImage.h"
void destroy(GtkWidget * widget, gpointer data) {
gtk_main_quit();
}
int main(int argc, char *argv[])
{
GtkWidget *window, *imagebox;
GdkVisual *visual;
GdkImage *image;
FIBITMAP *dib;
int y;
// initialize the FreeImage library
FreeImage_Initialise();
dib = FreeImage_Load(FIF_PNG, "freeimage.png", PNG_DEFAULT);
gtk_init(&argc, &argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_signal_connect(GTK_OBJECT(window), "destroy",
GTK_SIGNAL_FUNC(destroy), NULL);
visual = gdk_visual_get_system();
image = gdk_image_new(GDK_IMAGE_NORMAL,visual,
FreeImage_GetWidth(dib),FreeImage_GetHeight(dib));
g_print("picture: %d bpp\n"
"system: %d bpp byteorder: %d\n"
" redbits: %d greenbits: %d bluebits: %d\n"
"image: %d bpp %d bytes/pixel\n",
FreeImage_GetBPP(dib),
visual->depth,visual->byte_order,
visual->red_prec,visual->green_prec,visual->blue_prec,
image->depth,image->bpp );
if (FreeImage_GetBPP(dib) != (image->bpp << 3)) {
FIBITMAP *ptr;
switch (image->bpp) {
case 1:
ptr = FreeImage_ConvertTo8Bits(dib);
break;
case 2:
if (image->depth == 15) {
ptr = FreeImage_ConvertTo16Bits555(dib);
} else {
ptr = FreeImage_ConvertTo16Bits565(dib);
}
break;
case 3:
ptr = FreeImage_ConvertTo24Bits(dib);
break;
default:
case 4:
ptr = FreeImage_ConvertTo32Bits(dib);
break;
}
FreeImage_Unload(dib);
dib = ptr;
}
//makes it upside down :(
// memcpy(image->mem, FreeImage_GetBits(dib), image->bpl * image->height);
BYTE *ptr = FreeImage_GetBits(dib);
for (y = 0; y < image->height; y++) {
memcpy(image->mem + (y * image->bpl),
ptr + ((image->height - y - 1) * image->bpl),
image->bpl);
}
FreeImage_Unload(dib);
imagebox = gtk_image_new(image, NULL);
gtk_container_add(GTK_CONTAINER(window), imagebox);
gtk_widget_show(imagebox);
gtk_widget_show(window);
gtk_main();
// release the FreeImage library
FreeImage_DeInitialise();
return 0;
}
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