gtk2/demos/testpixbuf-save.c
Owen Taylor 58b5405bd2 at Oct 20 19:38:16 2001 Owen Taylor <otaylor@redhat.com>
* demos/*.c demos/gdk-pixbuf/*.c: Eliminate gtk_signal_*
        in favor of g_signal_*, gtk_object_* in favor of
        g_object_*.
2001-10-20 23:39:32 +00:00

156 lines
5.6 KiB
C

#include "config.h"
#include <stdio.h>
#include <gtk/gtk.h>
void
keypress_check (GtkWidget *widget, GdkEventKey *evt, gpointer data)
{
GdkPixbuf *pixbuf;
GtkDrawingArea *da = (GtkDrawingArea*)data;
GError *err = NULL;
pixbuf = (GdkPixbuf *) g_object_get_data (G_OBJECT (da), "pixbuf");
if (evt->keyval == 'q')
gtk_main_quit ();
if (evt->keyval == 's') {
if (pixbuf == NULL) {
fprintf (stderr, "PIXBUF NULL\n");
return;
}
if (!gdk_pixbuf_save (pixbuf, "foo.jpg", "jpeg",
&err,
"quality", "100",
NULL)) {
fprintf (stderr, "%s", err->message);
g_error_free (err);
}
} else if (evt->keyval == 'p') {
if (pixbuf == NULL) {
fprintf (stderr, "PIXBUF NULL\n");
return;
}
if (!gdk_pixbuf_save (pixbuf, "foo.png", "png",
&err,
"tEXt::Software", "testpixbuf-save",
NULL)) {
fprintf (stderr, "%s", err->message);
g_error_free (err);
}
}
}
int
close_app (GtkWidget *widget, gpointer data)
{
gtk_main_quit ();
return TRUE;
}
int
expose_cb (GtkWidget *drawing_area, GdkEventExpose *evt, gpointer data)
{
GdkPixbuf *pixbuf;
pixbuf = (GdkPixbuf *) g_object_get_data (G_OBJECT (drawing_area),
"pixbuf");
if (gdk_pixbuf_get_has_alpha (pixbuf)) {
gdk_draw_rgb_32_image (drawing_area->window,
drawing_area->style->black_gc,
evt->area.x, evt->area.y,
evt->area.width,
evt->area.height,
GDK_RGB_DITHER_MAX,
gdk_pixbuf_get_pixels (pixbuf) +
(evt->area.y * gdk_pixbuf_get_rowstride (pixbuf)) +
(evt->area.x * gdk_pixbuf_get_n_channels (pixbuf)),
gdk_pixbuf_get_rowstride (pixbuf));
} else {
gdk_draw_rgb_image (drawing_area->window,
drawing_area->style->black_gc,
evt->area.x, evt->area.y,
evt->area.width,
evt->area.height,
GDK_RGB_DITHER_NORMAL,
gdk_pixbuf_get_pixels (pixbuf) +
(evt->area.y * gdk_pixbuf_get_rowstride (pixbuf)) +
(evt->area.x * gdk_pixbuf_get_n_channels (pixbuf)),
gdk_pixbuf_get_rowstride (pixbuf));
}
return FALSE;
}
int
configure_cb (GtkWidget *drawing_area, GdkEventConfigure *evt, gpointer data)
{
GdkPixbuf *pixbuf;
pixbuf = (GdkPixbuf *) g_object_get_data (G_OBJECT (drawing_area),
"pixbuf");
g_print ("X:%d Y:%d\n", evt->width, evt->height);
if (evt->width != gdk_pixbuf_get_width (pixbuf) || evt->height != gdk_pixbuf_get_height (pixbuf)) {
GdkWindow *root;
GdkPixbuf *new_pixbuf;
root = gdk_get_default_root_window ();
new_pixbuf = gdk_pixbuf_get_from_drawable (NULL, root, NULL,
0, 0, 0, 0, evt->width, evt->height);
g_object_set_data (G_OBJECT (drawing_area), "pixbuf", new_pixbuf);
gdk_pixbuf_unref (pixbuf);
}
return FALSE;
}
int
main (int argc, char **argv)
{
GdkWindow *root;
GtkWidget *window;
GtkWidget *vbox;
GtkWidget *drawing_area;
GdkPixbuf *pixbuf;
gtk_init (&argc, &argv);
gtk_widget_set_default_colormap (gdk_rgb_get_colormap ());
root = gdk_get_default_root_window ();
pixbuf = gdk_pixbuf_get_from_drawable (NULL, root, NULL,
0, 0, 0, 0, 150, 160);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
g_signal_connect (window, "delete_event",
G_CALLBACK (close_app), NULL);
g_signal_connect (window, "destroy",
G_CALLBACK (close_app), NULL);
vbox = gtk_vbox_new (FALSE, 0);
gtk_container_add (GTK_CONTAINER (window), vbox);
drawing_area = gtk_drawing_area_new ();
gtk_widget_set_size_request (GTK_WIDGET (drawing_area),
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf));
g_signal_connect (drawing_area, "expose_event",
G_CALLBACK (expose_cb), NULL);
g_signal_connect (drawing_area, "configure_event",
G_CALLBACK (configure_cb), NULL);
g_signal_connect (window, "key_press_event",
G_CALLBACK (keypress_check), drawing_area);
g_object_set_data (G_OBJECT (drawing_area), "pixbuf", pixbuf);
gtk_box_pack_start (GTK_BOX (vbox), drawing_area, TRUE, TRUE, 0);
gtk_widget_show_all (window);
gtk_main ();
return 0;
}