mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-12-26 13:41:07 +00:00
d99bd97fe8
2001-12-13 Sebastian Wilhelmi <wilhelmi@ira.uka.de> * gdk-pixbuf-animation.c, gdk-pixbuf-loader.c, gdk-pixpuf.c, io-gif-animation.c, io-gif.c, io-tiff.c, test-loaders.c: Remove assorted G_OBJECT casts where unnecessary. * gdk-pixbuf-loader.c: Call g_object_ref and g_object_unref instead of gdk_pixbuf_animation_ref and gdk_pixbuf_animation_unref resp. * gdk-pixbuf-csource.c, io-bmp.c, io-gif-animation.c, io-ico.c, io-jpeg.c, io-png.c, io-pnm.c, io-ras.c, io-tga.c, io-wbmp.c, io-xbm.c, io-xpm.c, test-gdk-pixbuf.c: Dito for gdk_pixbuf_ref and gdk_pixbuf_unref. * Makefile.am, pixops/Makefile.am: Compile everything with -DG_DISABLE_DEPRECATED -DGDK_PIXBUF_DISABLE_DEPRECATED * gdk-pixdata.c: Use g_ascii_strup() instead of g_strup(). * io-xpm.c: Use g_ascii_strcasecmp() instead of g_strcasecmp(). * demos/testpixbuf-drawable.c, demos/testpixbuf-save.c, demos/testpixbuf-scale.c, demos/testpixbuf.c: Call g_object_ref and g_object_unref instead of gdk_pixbuf_ref and gdk_pixbuf_unref resp.
169 lines
4.8 KiB
C
169 lines
4.8 KiB
C
#include <gtk/gtk.h>
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
GdkInterpType interp_type = GDK_INTERP_BILINEAR;
|
|
int overall_alpha = 255;
|
|
GdkPixbuf *pixbuf;
|
|
GtkWidget *darea;
|
|
|
|
void
|
|
set_interp_type (GtkWidget *widget, gpointer data)
|
|
{
|
|
interp_type = GPOINTER_TO_UINT (data);
|
|
gtk_widget_queue_draw (darea);
|
|
}
|
|
|
|
void
|
|
overall_changed_cb (GtkAdjustment *adjustment, gpointer data)
|
|
{
|
|
if (adjustment->value != overall_alpha)
|
|
{
|
|
overall_alpha = adjustment->value;
|
|
gtk_widget_queue_draw (darea);
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
expose_cb (GtkWidget *widget, GdkEventExpose *event, gpointer data)
|
|
{
|
|
GdkPixbuf *dest;
|
|
|
|
gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
|
|
|
|
dest = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, event->area.width, event->area.height);
|
|
|
|
gdk_pixbuf_composite_color (pixbuf, dest,
|
|
0, 0, event->area.width, event->area.height,
|
|
-event->area.x, -event->area.y,
|
|
(double) widget->allocation.width / gdk_pixbuf_get_width (pixbuf),
|
|
(double) widget->allocation.height / gdk_pixbuf_get_height (pixbuf),
|
|
interp_type, overall_alpha,
|
|
event->area.x, event->area.y, 16, 0xaaaaaa, 0x555555);
|
|
|
|
gdk_pixbuf_render_to_drawable (dest, widget->window, widget->style->fg_gc[GTK_STATE_NORMAL],
|
|
0, 0, event->area.x, event->area.y,
|
|
event->area.width, event->area.height,
|
|
GDK_RGB_DITHER_NORMAL, event->area.x, event->area.y);
|
|
|
|
g_object_unref (dest);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
extern void pixbuf_init();
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
GtkWidget *window, *vbox;
|
|
GtkWidget *menuitem, *optionmenu, *menu;
|
|
GtkWidget *alignment;
|
|
GtkWidget *hbox, *label, *hscale;
|
|
GtkAdjustment *adjustment;
|
|
GtkRequisition scratch_requisition;
|
|
const gchar *creator;
|
|
GError *error;
|
|
|
|
pixbuf_init ();
|
|
|
|
gtk_init (&argc, &argv);
|
|
|
|
if (argc != 2) {
|
|
fprintf (stderr, "Usage: testpixbuf-scale FILE\n");
|
|
exit (1);
|
|
}
|
|
|
|
error = NULL;
|
|
pixbuf = gdk_pixbuf_new_from_file (argv[1], &error);
|
|
if (!pixbuf) {
|
|
fprintf (stderr, "Cannot load image: %s\n",
|
|
error->message);
|
|
g_error_free (error);
|
|
exit(1);
|
|
}
|
|
|
|
creator = gdk_pixbuf_get_option (pixbuf, "tEXt::Software");
|
|
if (creator)
|
|
g_print ("%s was created by '%s'\n", argv[1], creator);
|
|
|
|
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
|
|
g_signal_connect (window, "destroy",
|
|
G_CALLBACK (gtk_main_quit), NULL);
|
|
|
|
vbox = gtk_vbox_new (FALSE, 0);
|
|
gtk_container_add (GTK_CONTAINER (window), vbox);
|
|
|
|
menu = gtk_menu_new ();
|
|
|
|
menuitem = gtk_menu_item_new_with_label ("NEAREST");
|
|
g_signal_connect (menuitem, "activate",
|
|
G_CALLBACK (set_interp_type),
|
|
GUINT_TO_POINTER (GDK_INTERP_NEAREST));
|
|
gtk_widget_show (menuitem);
|
|
gtk_container_add (GTK_CONTAINER (menu), menuitem);
|
|
|
|
menuitem = gtk_menu_item_new_with_label ("BILINEAR");
|
|
g_signal_connect (menuitem, "activate",
|
|
G_CALLBACK (set_interp_type),
|
|
GUINT_TO_POINTER (GDK_INTERP_BILINEAR));
|
|
gtk_widget_show (menuitem);
|
|
gtk_container_add (GTK_CONTAINER (menu), menuitem);
|
|
|
|
menuitem = gtk_menu_item_new_with_label ("TILES");
|
|
g_signal_connect (menuitem, "activate",
|
|
G_CALLBACK (set_interp_type),
|
|
GUINT_TO_POINTER (GDK_INTERP_TILES));
|
|
gtk_container_add (GTK_CONTAINER (menu), menuitem);
|
|
|
|
menuitem = gtk_menu_item_new_with_label ("HYPER");
|
|
g_signal_connect (menuitem, "activate",
|
|
G_CALLBACK (set_interp_type),
|
|
GUINT_TO_POINTER (GDK_INTERP_HYPER));
|
|
gtk_container_add (GTK_CONTAINER (menu), menuitem);
|
|
|
|
optionmenu = gtk_option_menu_new ();
|
|
gtk_option_menu_set_menu (GTK_OPTION_MENU (optionmenu), menu);
|
|
gtk_option_menu_set_history (GTK_OPTION_MENU (optionmenu), 1);
|
|
|
|
alignment = gtk_alignment_new (0.0, 0.0, 0.0, 0.5);
|
|
gtk_box_pack_start (GTK_BOX (vbox), alignment, FALSE, FALSE, 0);
|
|
|
|
hbox = gtk_hbox_new (FALSE, 4);
|
|
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
|
|
|
|
label = gtk_label_new ("Overall Alpha:");
|
|
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
|
|
|
|
adjustment = GTK_ADJUSTMENT (gtk_adjustment_new (overall_alpha, 0, 255, 1, 10, 0));
|
|
g_signal_connect (adjustment, "value_changed",
|
|
G_CALLBACK (overall_changed_cb), NULL);
|
|
|
|
hscale = gtk_hscale_new (adjustment);
|
|
gtk_scale_set_digits (GTK_SCALE (hscale), 0);
|
|
gtk_box_pack_start (GTK_BOX (hbox), hscale, TRUE, TRUE, 0);
|
|
|
|
gtk_container_add (GTK_CONTAINER (alignment), optionmenu);
|
|
gtk_widget_show_all (vbox);
|
|
|
|
/* Compute the size without the drawing area, so we know how big to make the default size */
|
|
gtk_widget_size_request (vbox, &scratch_requisition);
|
|
|
|
darea = gtk_drawing_area_new ();
|
|
gtk_box_pack_start (GTK_BOX (vbox), darea, TRUE, TRUE, 0);
|
|
|
|
g_signal_connect (darea, "expose_event",
|
|
G_CALLBACK (expose_cb), NULL);
|
|
|
|
gtk_window_set_default_size (GTK_WINDOW (window),
|
|
gdk_pixbuf_get_width (pixbuf),
|
|
scratch_requisition.height + gdk_pixbuf_get_height (pixbuf));
|
|
|
|
gtk_widget_show_all (window);
|
|
|
|
gtk_main ();
|
|
|
|
return 0;
|
|
}
|