mirror of
https://gitlab.gnome.org/GNOME/gtk.git
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119 lines
3.3 KiB
C
119 lines
3.3 KiB
C
#include "config.h"
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#undef GDK_DISABLE_DEPRECATED
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#include <gtk/gtk.h>
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int
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close_app (GtkWidget *widget, gpointer data)
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{
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gtk_main_quit ();
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return TRUE;
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}
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int
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expose_cb (GtkWidget *drawing_area, GdkEventExpose *evt, gpointer data)
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{
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GdkPixbuf *pixbuf;
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pixbuf = (GdkPixbuf *) g_object_get_data (G_OBJECT (drawing_area), "pixbuf");
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if (gdk_pixbuf_get_has_alpha (pixbuf))
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{
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gdk_draw_rgb_32_image (drawing_area->window,
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drawing_area->style->black_gc,
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evt->area.x, evt->area.y,
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evt->area.width,
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evt->area.height,
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GDK_RGB_DITHER_MAX,
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gdk_pixbuf_get_pixels (pixbuf) +
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(evt->area.y * gdk_pixbuf_get_rowstride (pixbuf)) +
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(evt->area.x * gdk_pixbuf_get_n_channels (pixbuf)),
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gdk_pixbuf_get_rowstride (pixbuf));
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}
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else
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{
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gdk_draw_rgb_image (drawing_area->window,
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drawing_area->style->black_gc,
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evt->area.x, evt->area.y,
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evt->area.width,
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evt->area.height,
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GDK_RGB_DITHER_NORMAL,
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gdk_pixbuf_get_pixels (pixbuf) +
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(evt->area.y * gdk_pixbuf_get_rowstride (pixbuf)) +
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(evt->area.x * gdk_pixbuf_get_n_channels (pixbuf)),
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gdk_pixbuf_get_rowstride (pixbuf));
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}
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return FALSE;
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}
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int
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configure_cb (GtkWidget *drawing_area, GdkEventConfigure *evt, gpointer data)
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{
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GdkPixbuf *pixbuf;
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pixbuf = (GdkPixbuf *) g_object_get_data (G_OBJECT (drawing_area), "pixbuf");
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g_print ("X:%d Y:%d\n", evt->width, evt->height);
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if (evt->width != gdk_pixbuf_get_width (pixbuf) || evt->height != gdk_pixbuf_get_height (pixbuf))
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{
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GdkWindow *root;
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GdkPixbuf *new_pixbuf;
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root = gdk_get_default_root_window ();
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new_pixbuf = gdk_pixbuf_get_from_drawable (NULL, root, NULL,
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0, 0, 0, 0, evt->width, evt->height);
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g_object_set_data (G_OBJECT (drawing_area), "pixbuf", new_pixbuf);
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g_object_unref (pixbuf);
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}
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return FALSE;
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}
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extern void pixbuf_init (void);
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int
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main (int argc, char **argv)
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{
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GdkWindow *root;
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GtkWidget *window;
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GtkWidget *vbox;
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GtkWidget *drawing_area;
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GdkPixbuf *pixbuf;
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pixbuf_init ();
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gtk_init (&argc, &argv);
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gdk_rgb_set_verbose (TRUE);
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gtk_widget_set_default_colormap (gdk_rgb_get_colormap ());
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root = gdk_get_default_root_window ();
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pixbuf = gdk_pixbuf_get_from_drawable (NULL, root, NULL,
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0, 0, 0, 0, 150, 160);
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window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
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g_signal_connect (window, "delete_event",
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G_CALLBACK (close_app), NULL);
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g_signal_connect (window, "destroy",
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G_CALLBACK (close_app), NULL);
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vbox = gtk_vbox_new (FALSE, 0);
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gtk_container_add (GTK_CONTAINER (window), vbox);
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drawing_area = gtk_drawing_area_new ();
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gtk_widget_set_size_request (GTK_WIDGET (drawing_area),
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gdk_pixbuf_get_width (pixbuf),
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gdk_pixbuf_get_height (pixbuf));
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g_signal_connect (drawing_area, "expose_event",
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G_CALLBACK (expose_cb), NULL);
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g_signal_connect (drawing_area, "configure_event",
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G_CALLBACK (configure_cb), NULL);
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g_object_set_data (G_OBJECT (drawing_area), "pixbuf", pixbuf);
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gtk_box_pack_start (GTK_BOX (vbox), drawing_area, TRUE, TRUE, 0);
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gtk_widget_show_all (window);
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gtk_main ();
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return 0;
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}
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