Added testpixbuf-drawable test program

1999-11-13 17:28:11 +00:00
parent 9599825ea9
commit e4df9fa95b
3 changed files with 119 additions and 1 deletions
--- a/demos/testpixbuf-drawable.c
+++ b/demos/testpixbuf-drawable.c
@ -0,0 +1,107 @@
+#include <gtk/gtk.h>
+#include <gdk/gdkx.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <gdk-pixbuf/gdk-pixbuf-drawable.h>
+
+void close_app(GtkWidget *widget, gpointer data)
+{
+   gtk_main_quit();
+}
+
+void expose_cb(GtkWidget *drawing_area, GdkEventExpose *evt, gpointer
+data)
+{
+   GdkPixbuf *pixbuf;
+   gint x1, y1, x2, y2;
+         
+   pixbuf = (GdkPixbuf *) gtk_object_get_data(GTK_OBJECT(drawing_area),
+                                              "pixbuf");
+      
+   if(pixbuf->art_pixbuf->has_alpha)
+   {
+      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,
+                            pixbuf->art_pixbuf->pixels +
+                              (evt->area.y * pixbuf->art_pixbuf->rowstride) +
+                              (evt->area.x *  pixbuf->art_pixbuf->n_channels),
+                            pixbuf->art_pixbuf->rowstride);
+   }
+   else
+   {
+      gdk_draw_rgb_image(drawing_area->window, 
+                         drawing_area->style->white_gc, 
+                         evt->area.x, evt->area.y,
+                         evt->area.width,
+                         evt->area.height,  
+                         GDK_RGB_DITHER_NORMAL,
+                         pixbuf->art_pixbuf->pixels +
+                           (evt->area.y * pixbuf->art_pixbuf->rowstride) +
+                           (evt->area.x * pixbuf->art_pixbuf->n_channels),
+                         pixbuf->art_pixbuf->rowstride);
+   }
+}
+void configure_cb(GtkWidget *drawing_area, GdkEventConfigure *evt,
+gpointer data)
+{
+   GdkPixbuf *pixbuf, spb;
+                           
+   pixbuf = (GdkPixbuf *) gtk_object_get_data(GTK_OBJECT(drawing_area),   
+                                              "pixbuf");
+    
+   g_print("X:%d Y:%d\n", evt->width, evt->height);
+#if 0
+   if(((evt->width) != (pixbuf->art_pixbuf->width)) ||
+      ((evt->height) != (pixbuf->art_pixbuf->height)))
+      gdk_pixbuf_scale(pixbuf, evt->width, evt->height);
+#endif                     
+}
+
+int main(int argc, char **argv)
+{   
+   GdkWindow     *root;
+   GtkWidget     *window;
+   GtkWidget     *vbox;
+   GtkWidget     *drawing_area;
+   GdkPixbuf     *pixbuf;    
+   gint           width, height;
+   gint           x, y;
+   
+   gtk_init(&argc, &argv);   
+   gdk_rgb_set_verbose(TRUE);
+   gdk_rgb_init();
+
+   gtk_widget_set_default_colormap(gdk_rgb_get_cmap());
+   gtk_widget_set_default_visual(gdk_rgb_get_visual());
+
+   root = gdk_window_foreign_new(GDK_ROOT_WINDOW());
+   pixbuf = gdk_pixbuf_rgb_from_drawable(root, 0, 0, 150, 160);
+   
+   window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+   gtk_signal_connect(GTK_OBJECT(window), "delete_event",
+                      GTK_SIGNAL_FUNC(close_app), NULL);
+   gtk_signal_connect(GTK_OBJECT(window), "destroy",   
+
+                      GTK_SIGNAL_FUNC(close_app), NULL);
+   
+   vbox = gtk_vbox_new(FALSE, 0);
+   gtk_container_add(GTK_CONTAINER(window), vbox);  
+   
+   drawing_area = gtk_drawing_area_new();
+   gtk_drawing_area_size(GTK_DRAWING_AREA(drawing_area),
+                         pixbuf->art_pixbuf->width,
+                         pixbuf->art_pixbuf->height);
+   gtk_signal_connect(GTK_OBJECT(drawing_area), "expose_event",
+                      GTK_SIGNAL_FUNC(expose_cb), NULL);
+
+   gtk_signal_connect(GTK_OBJECT(drawing_area), "configure_event",
+                      GTK_SIGNAL_FUNC(configure_cb), NULL);
+   gtk_object_set_data(GTK_OBJECT(drawing_area), "pixbuf", pixbuf);
+   gtk_box_pack_start(GTK_BOX(vbox), drawing_area, TRUE, TRUE, 0);
+   
+   gtk_widget_show_all(window);
+   gtk_main();
+}