diff options
Diffstat (limited to 'gtk/testgtk.c')
| -rw-r--r-- | gtk/testgtk.c | 318 |
1 files changed, 318 insertions, 0 deletions
diff --git a/gtk/testgtk.c b/gtk/testgtk.c index 0be8272288..9a256b5701 100644 --- a/gtk/testgtk.c +++ b/gtk/testgtk.c @@ -1670,6 +1670,323 @@ create_handle_box (void) gtk_widget_destroy (window); } +/* + * Test for getting an image from a drawable + */ + +struct GetImageData +{ + GtkWidget *src; + GtkWidget *snap; + GtkWidget *sw; +}; + +static void +take_snapshot (GtkWidget *button, + gpointer data) +{ + struct GetImageData *gid = data; + GdkRectangle visible; + int width_fraction; + int height_fraction; + GdkGC *gc; + GdkGC *black_gc; + GdkColor color = { 0, 30000, 0, 0 }; + GdkRectangle target; + GdkImage *shot; + + /* Do some begin_paint_rect on some random rects, draw some + * distinctive stuff into those rects, then take the snapshot. + * figure out whether any rects were overlapped and report to + * user. + */ + + visible = gid->sw->allocation; + + visible.x = gtk_scrolled_window_get_hadjustment (GTK_SCROLLED_WINDOW (gid->sw))->value; + visible.y = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (gid->sw))->value; + + width_fraction = visible.width / 4; + height_fraction = visible.height / 4; + + gc = gdk_gc_new (gid->src->window); + black_gc = gid->src->style->black_gc; + + gdk_gc_set_rgb_fg_color (gc, &color); + + + target.x = visible.x + width_fraction; + target.y = visible.y + height_fraction * 3; + target.width = width_fraction; + target.height = height_fraction / 2; + + gdk_window_begin_paint_rect (gid->src->window, + &target); + + gdk_draw_rectangle (gid->src->window, + gc, + TRUE, + target.x, target.y, + target.width, target.height); + + gdk_draw_rectangle (gid->src->window, + black_gc, + FALSE, + target.x + 10, target.y + 10, + target.width - 20, target.height - 20); + + target.x = visible.x + width_fraction; + target.y = visible.y + height_fraction; + target.width = width_fraction; + target.height = height_fraction; + + gdk_window_begin_paint_rect (gid->src->window, + &target); + + gdk_draw_rectangle (gid->src->window, + gc, + TRUE, + target.x, target.y, + target.width, target.height); + + gdk_draw_rectangle (gid->src->window, + black_gc, + FALSE, + target.x + 10, target.y + 10, + target.width - 20, target.height - 20); + + target.x = visible.x + width_fraction * 3; + target.y = visible.y + height_fraction; + target.width = width_fraction / 2; + target.height = height_fraction; + + gdk_window_begin_paint_rect (gid->src->window, + &target); + + gdk_draw_rectangle (gid->src->window, + gc, + TRUE, + target.x, target.y, + target.width, target.height); + + gdk_draw_rectangle (gid->src->window, + black_gc, + FALSE, + target.x + 10, target.y + 10, + target.width - 20, target.height - 20); + + target.x = visible.x + width_fraction * 2; + target.y = visible.y + height_fraction * 2; + target.width = width_fraction / 4; + target.height = height_fraction / 4; + + gdk_window_begin_paint_rect (gid->src->window, + &target); + + gdk_draw_rectangle (gid->src->window, + gc, + TRUE, + target.x, target.y, + target.width, target.height); + + gdk_draw_rectangle (gid->src->window, + black_gc, + FALSE, + target.x + 10, target.y + 10, + target.width - 20, target.height - 20); + + target.x += target.width / 2; + target.y += target.width / 2; + + gdk_window_begin_paint_rect (gid->src->window, + &target); + + gdk_draw_rectangle (gid->src->window, + gc, + TRUE, + target.x, target.y, + target.width, target.height); + + gdk_draw_rectangle (gid->src->window, + black_gc, + FALSE, + target.x + 10, target.y + 10, + target.width - 20, target.height - 20); + + /* Screen shot area */ + + target.x = visible.x + width_fraction * 1.5; + target.y = visible.y + height_fraction * 1.5; + target.width = width_fraction * 2; + target.height = height_fraction * 2; + + shot = gdk_drawable_get_image (gid->src->window, + target.x, target.y, + target.width, target.height); + + gtk_image_set_from_image (GTK_IMAGE (gid->snap), + shot, NULL); + + g_object_unref (G_OBJECT (shot)); + + gdk_window_end_paint (gid->src->window); + gdk_window_end_paint (gid->src->window); + gdk_window_end_paint (gid->src->window); + gdk_window_end_paint (gid->src->window); + gdk_window_end_paint (gid->src->window); + + gdk_draw_rectangle (gid->src->window, + gid->src->style->black_gc, + FALSE, + target.x, target.y, + target.width, target.height); + + g_object_unref (G_OBJECT (gc)); +} + +static gint +image_source_expose (GtkWidget *da, + GdkEventExpose *event, + gpointer data) +{ + int x = event->area.x; + GdkColor red = { 0, 65535, 0, 0 }; + GdkColor green = { 0, 0, 65535, 0 }; + GdkColor blue = { 0, 0, 0, 65535 }; + GdkGC *gc; + + gc = gdk_gc_new (event->window); + + while (x < (event->area.x + event->area.width)) + { + switch (x % 7) + { + case 0: + case 1: + case 2: + gdk_gc_set_rgb_fg_color (gc, &red); + break; + + case 3: + case 4: + case 5: + gdk_gc_set_rgb_fg_color (gc, &green); + break; + + case 6: + case 7: + case 8: + gdk_gc_set_rgb_fg_color (gc, &blue); + break; + + default: + g_assert_not_reached (); + break; + } + + gdk_draw_line (event->window, + gc, + x, event->area.y, + x, event->area.y + event->area.height); + + ++x; + } + + g_object_unref (G_OBJECT (gc)); + + return TRUE; +} + +static void +create_get_image (void) +{ + static GtkWidget *window = NULL; + + if (!window) + { + GtkWidget *sw; + GtkWidget *src; + GtkWidget *snap; + GtkWidget *vbox; + GtkWidget *hbox; + GtkWidget *button; + struct GetImageData *gid; + + gid = g_new (struct GetImageData, 1); + + window = gtk_window_new (GTK_WINDOW_TOPLEVEL); + + gtk_signal_connect (GTK_OBJECT (window), + "destroy", + GTK_SIGNAL_FUNC (gtk_widget_destroyed), + &window); + + gtk_object_set_data_full (GTK_OBJECT (window), + "testgtk-get-image-data", + gid, + g_free); + + vbox = gtk_vbox_new (FALSE, 0); + + gtk_container_add (GTK_CONTAINER (window), vbox); + + sw = gtk_scrolled_window_new (NULL, NULL); + gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw), + GTK_POLICY_AUTOMATIC, + GTK_POLICY_AUTOMATIC); + + gid->sw = sw; + + gtk_widget_set_usize (sw, 400, 400); + + src = gtk_drawing_area_new (); + gtk_widget_set_usize (src, 10000, 10000); + + gtk_signal_connect (GTK_OBJECT (src), + "expose_event", + GTK_SIGNAL_FUNC (image_source_expose), + gid); + + gid->src = src; + + gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (sw), + src); + + gtk_box_pack_start (GTK_BOX (vbox), + sw, TRUE, TRUE, 0); + + + hbox = gtk_hbox_new (FALSE, 3); + + snap = gtk_widget_new (GTK_TYPE_IMAGE, NULL); + + gid->snap = snap; + + sw = gtk_scrolled_window_new (NULL, NULL); + gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw), + GTK_POLICY_AUTOMATIC, + GTK_POLICY_AUTOMATIC); + gtk_widget_set_usize (sw, 300, 300); + + gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (sw), snap); + + gtk_box_pack_end (GTK_BOX (hbox), sw, FALSE, FALSE, 5); + + button = gtk_button_new_with_label ("Get image from drawable"); + + gtk_signal_connect (GTK_OBJECT (button), + "clicked", + GTK_SIGNAL_FUNC (take_snapshot), + gid); + + gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0); + + gtk_box_pack_end (GTK_BOX (vbox), hbox, FALSE, FALSE, 0); + + gtk_widget_show_all (window); + } +} + /* * Label Demo */ @@ -8738,6 +9055,7 @@ create_main_window (void) { "font selection", create_font_selection }, { "gamma curve", create_gamma_curve }, { "handle box", create_handle_box }, + { "image from drawable", create_get_image }, { "image", create_image }, { "item factory", create_item_factory }, { "labels", create_labels }, |