GtkWidget *
do_foreigndrawing (GtkWidget *do_widget)
{
static GtkWidget *window = NULL;
if (!window)
{
GtkWidget *box;
GtkWidget *da;
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (window), "Foreign drawing");
gtk_window_set_display (GTK_WINDOW (window),
gtk_widget_get_display (do_widget));
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_widget_destroyed), &window);
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 10);
gtk_container_add (GTK_CONTAINER (window), box);
da = gtk_drawing_area_new ();
gtk_drawing_area_set_content_width (GTK_DRAWING_AREA (da), 400);
gtk_drawing_area_set_content_height (GTK_DRAWING_AREA (da), 400);
gtk_drawing_area_set_draw_func (GTK_DRAWING_AREA (da), draw_func, NULL, NULL);
gtk_widget_set_hexpand (da, TRUE);
gtk_widget_set_vexpand (da, TRUE);
gtk_container_add (GTK_CONTAINER (box), da);
}
if (!gtk_widget_get_visible (window))
gtk_widget_show (window);
else
gtk_widget_destroy (window);
return window;
}
GtkWidget *
do_drawingarea (GtkWidget *do_widget)
{
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *da;
GtkWidget *label;
GtkGesture *drag;
if (!window)
{
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_display (GTK_WINDOW (window),
gtk_widget_get_display (do_widget));
gtk_window_set_title (GTK_WINDOW (window), "Drawing Area");
g_signal_connect (window, "destroy",
G_CALLBACK (close_window), NULL);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 8);
g_object_set (vbox, "margin", 16, NULL);
gtk_container_add (GTK_CONTAINER (window), vbox);
/*
* Create the checkerboard area
*/
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label),
"<u>Checkerboard pattern</u>");
gtk_container_add (GTK_CONTAINER (vbox), label);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_widget_set_vexpand (frame, TRUE);
gtk_container_add (GTK_CONTAINER (vbox), frame);
da = gtk_drawing_area_new ();
gtk_drawing_area_set_content_width (GTK_DRAWING_AREA (da), 100);
gtk_drawing_area_set_content_height (GTK_DRAWING_AREA (da), 100);
gtk_drawing_area_set_draw_func (GTK_DRAWING_AREA (da), checkerboard_draw, NULL, NULL);
gtk_container_add (GTK_CONTAINER (frame), da);
/*
* Create the scribble area
*/
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label),
"<u>Scribble area</u>");
gtk_container_add (GTK_CONTAINER (vbox), label);
frame = gtk_frame_new (NULL);
gtk_widget_set_vexpand (frame, TRUE);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_container_add (GTK_CONTAINER (vbox), frame);
da = gtk_drawing_area_new ();
gtk_drawing_area_set_content_width (GTK_DRAWING_AREA (da), 100);
gtk_drawing_area_set_content_height (GTK_DRAWING_AREA (da), 100);
gtk_drawing_area_set_draw_func (GTK_DRAWING_AREA (da), scribble_draw, NULL, NULL);
gtk_container_add (GTK_CONTAINER (frame), da);
g_signal_connect (da, "size-allocate",
G_CALLBACK (scribble_size_allocate), NULL);
drag = gtk_gesture_drag_new ();
gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (drag), GDK_BUTTON_PRIMARY);
gtk_widget_add_controller (da, GTK_EVENT_CONTROLLER (drag));
g_signal_connect (drag, "drag-begin", G_CALLBACK (drag_begin), da);
g_signal_connect (drag, "drag-update", G_CALLBACK (drag_update), da);
g_signal_connect (drag, "drag-end", G_CALLBACK (drag_end), da);
}
if (!gtk_widget_get_visible (window))
gtk_widget_show (window);
else
gtk_widget_destroy (window);
return window;
}
GtkWidget *
do_drawingarea (GtkWidget *do_widget)
{
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *da;
GtkWidget *label;
if (!window)
{
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_screen (GTK_WINDOW (window),
gtk_widget_get_screen (do_widget));
gtk_window_set_title (GTK_WINDOW (window), "Drawing Area");
g_signal_connect (window, "destroy",
G_CALLBACK (close_window), NULL);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 8);
g_object_set (vbox, "margin", 16, NULL);
gtk_container_add (GTK_CONTAINER (window), vbox);
/*
* Create the checkerboard area
*/
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label),
"<u>Checkerboard pattern</u>");
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (vbox), frame, TRUE, TRUE);
da = gtk_drawing_area_new ();
gtk_drawing_area_set_content_width (GTK_DRAWING_AREA (da), 100);
gtk_drawing_area_set_content_height (GTK_DRAWING_AREA (da), 100);
gtk_drawing_area_set_draw_func (GTK_DRAWING_AREA (da), checkerboard_draw, NULL, NULL);
gtk_container_add (GTK_CONTAINER (frame), da);
/*
* Create the scribble area
*/
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label),
"<u>Scribble area</u>");
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (vbox), frame, TRUE, TRUE);
da = gtk_drawing_area_new ();
gtk_drawing_area_set_content_width (GTK_DRAWING_AREA (da), 100);
gtk_drawing_area_set_content_height (GTK_DRAWING_AREA (da), 100);
gtk_drawing_area_set_draw_func (GTK_DRAWING_AREA (da), scribble_draw, NULL, NULL);
gtk_container_add (GTK_CONTAINER (frame), da);
/* Signals used to handle backing surface */
g_signal_connect (da,"configure-event",
G_CALLBACK (scribble_configure_event), NULL);
/* Event signals */
g_signal_connect (da, "motion-notify-event",
G_CALLBACK (scribble_motion_notify_event), NULL);
g_signal_connect (da, "button-press-event",
G_CALLBACK (scribble_button_press_event), NULL);
/* Ask to receive events the drawing area doesn't normally
* subscribe to
*/
gtk_widget_set_events (da, gtk_widget_get_events (da)
| GDK_LEAVE_NOTIFY_MASK
| GDK_BUTTON_PRESS_MASK
| GDK_POINTER_MOTION_MASK
| GDK_POINTER_MOTION_HINT_MASK);
}
if (!gtk_widget_get_visible (window))
gtk_widget_show_all (window);
else
gtk_widget_destroy (window);
return window;
}
