Commit 8670fbdb authored by Alexander Larsson's avatar Alexander Larsson

Implement the new offscreen signals in GtkOffscreenBox

This implements get-offscreen-parent, pick-offscreen-child,
to-parent and from-parent signals for GtkOffscreenBox
parent 904f0ccb
......@@ -35,6 +35,76 @@ static GType gtk_offscreen_box_child_type (GtkContainer *container);
G_DEFINE_TYPE (GtkOffscreenBox, gtk_offscreen_box, GTK_TYPE_CONTAINER);
static void
to_child_2 (GtkOffscreenBox *offscreen_box,
double widget_x, double widget_y,
double *x_out, double *y_out)
{
GtkAllocation child_area;
double x, y, xr, yr;
double cos_angle, sin_angle;
x = widget_x;
y = widget_y;
if (offscreen_box->child1 && GTK_WIDGET_VISIBLE (offscreen_box->child1))
y -= offscreen_box->child1->allocation.height;
child_area = offscreen_box->child2->allocation;
x -= child_area.width / 2;
y -= child_area.height / 2;
cos_angle = cos (-offscreen_box->angle);
sin_angle = sin (-offscreen_box->angle);
xr = x * cos_angle - y * sin_angle;
yr = x * sin_angle + y * cos_angle;
x = xr;
y = yr;
x += child_area.width / 2;
y += child_area.height / 2;
*x_out = x;
*y_out = y;
}
static void
to_parent_2 (GtkOffscreenBox *offscreen_box,
double offscreen_x, double offscreen_y,
double *x_out, double *y_out)
{
GtkAllocation child_area;
double x, y, xr, yr;
double cos_angle, sin_angle;
child_area = offscreen_box->child2->allocation;
x = offscreen_x;
y = offscreen_y;
x -= child_area.width / 2;
y -= child_area.height / 2;
cos_angle = cos (offscreen_box->angle);
sin_angle = sin (offscreen_box->angle);
xr = x * cos_angle - y * sin_angle;
yr = x * sin_angle + y * cos_angle;
x = xr;
y = yr;
x += child_area.width / 2;
y += child_area.height / 2;
if (offscreen_box->child1 && GTK_WIDGET_VISIBLE (offscreen_box->child1))
y += offscreen_box->child1->allocation.height;
*x_out = x;
*y_out = y;
}
static void
gtk_offscreen_box_class_init (GtkOffscreenBoxClass *klass)
{
......@@ -70,6 +140,101 @@ gtk_offscreen_box_new (void)
return g_object_new (GTK_TYPE_OFFSCREEN_BOX, NULL);
}
static GdkWindow *
get_offscreen_parent (GdkWindow *offscreen_window,
GtkOffscreenBox *offscreen_box)
{
return GTK_WIDGET (offscreen_box)->window;
}
static GdkWindow *
pick_offscreen_child (GdkWindow *offscreen_window,
double widget_x, double widget_y,
GtkOffscreenBox *offscreen_box)
{
GtkAllocation child_area;
double x, y;
/* First check for child 2 */
if (offscreen_box->child2 &&
GTK_WIDGET_VISIBLE (offscreen_box->child2))
{
to_child_2 (offscreen_box,
widget_x, widget_y,
&x, &y);
child_area = offscreen_box->child2->allocation;
if (x >= 0 && x < child_area.width &&
y >= 0 && y < child_area.height)
return offscreen_box->offscreen_window2;
}
if (offscreen_box->child1 && GTK_WIDGET_VISIBLE (offscreen_box->child1))
{
x = widget_x;
y = widget_y;
child_area = offscreen_box->child1->allocation;
if (x >= 0 && x < child_area.width &&
y >= 0 && y < child_area.height)
return offscreen_box->offscreen_window1;
}
return NULL;
}
static void
offscreen_window_to_parent1 (GdkWindow *offscreen_window,
double offscreen_x,
double offscreen_y,
double *parent_x,
double *parent_y,
GtkOffscreenBox *offscreen_box)
{
*parent_x = offscreen_x;
*parent_y = offscreen_y;
}
static void
offscreen_window_from_parent1 (GdkWindow *window,
double parent_x,
double parent_y,
double *offscreen_x,
double *offscreen_y,
GtkOffscreenBox *offscreen_box)
{
*offscreen_x = parent_x;
*offscreen_y = parent_y;
}
static void
offscreen_window_to_parent2 (GdkWindow *offscreen_window,
double offscreen_x,
double offscreen_y,
double *parent_x,
double *parent_y,
GtkOffscreenBox *offscreen_box)
{
to_parent_2 (offscreen_box,
offscreen_x, offscreen_y,
parent_x, parent_y);
}
static void
offscreen_window_from_parent2 (GdkWindow *window,
double parent_x,
double parent_y,
double *offscreen_x,
double *offscreen_y,
GtkOffscreenBox *offscreen_box)
{
to_child_2 (offscreen_box,
parent_x, parent_y,
offscreen_x, offscreen_y);
}
static void
gtk_offscreen_box_realize (GtkWidget *widget)
{
......@@ -108,8 +273,12 @@ gtk_offscreen_box_realize (GtkWidget *widget)
&attributes, attributes_mask);
gdk_window_set_user_data (widget->window, widget);
gdk_window_set_has_offscreen_children (widget->window, TRUE);
g_signal_connect (widget->window, "pick-offscreen-child",
G_CALLBACK (pick_offscreen_child), offscreen_box);
attributes.window_type = GDK_WINDOW_OFFSCREEN;
/* Child 1 */
attributes.x = attributes.y = 0;
if (offscreen_box->child1 && GTK_WIDGET_VISIBLE (offscreen_box->child1))
......@@ -124,6 +293,13 @@ gtk_offscreen_box_realize (GtkWidget *widget)
if (offscreen_box->child1)
gtk_widget_set_parent_window (offscreen_box->child1, offscreen_box->offscreen_window1);
g_signal_connect (offscreen_box->offscreen_window1, "get-offscreen-parent",
G_CALLBACK (get_offscreen_parent), offscreen_box);
g_signal_connect (offscreen_box->offscreen_window1, "to_parent",
G_CALLBACK (offscreen_window_to_parent1), offscreen_box);
g_signal_connect (offscreen_box->offscreen_window1, "from_parent",
G_CALLBACK (offscreen_window_from_parent1), offscreen_box);
/* Child 2 */
attributes.y = start_y;
child_requisition.width = child_requisition.height = 0;
......@@ -137,6 +313,12 @@ gtk_offscreen_box_realize (GtkWidget *widget)
gdk_window_set_user_data (offscreen_box->offscreen_window2, widget);
if (offscreen_box->child2)
gtk_widget_set_parent_window (offscreen_box->child2, offscreen_box->offscreen_window2);
g_signal_connect (offscreen_box->offscreen_window2, "get-offscreen-parent",
G_CALLBACK (get_offscreen_parent), offscreen_box);
g_signal_connect (offscreen_box->offscreen_window2, "to_parent",
G_CALLBACK (offscreen_window_to_parent2), offscreen_box);
g_signal_connect (offscreen_box->offscreen_window2, "from_parent",
G_CALLBACK (offscreen_window_from_parent2), offscreen_box);
widget->style = gtk_style_attach (widget->style, widget->window);
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment