static void
gtk_revealer_real_realize (GtkWidget *widget)
{
GtkRevealer *revealer = GTK_REVEALER (widget);
GtkRevealerPrivate *priv = gtk_revealer_get_instance_private (revealer);
GtkAllocation allocation;
GdkWindowAttr attributes = { 0 };
GdkWindowAttributesType attributes_mask;
GtkAllocation child_allocation;
GtkWidget *child;
GtkStyleContext *context;
GtkRevealerTransitionType transition;
gtk_widget_set_realized (widget, TRUE);
gtk_widget_get_allocation (widget, &allocation);
attributes.x = allocation.x;
attributes.y = allocation.y;
attributes.width = allocation.width;
attributes.height = allocation.height;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.event_mask =
gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
attributes_mask = (GDK_WA_X | GDK_WA_Y) | GDK_WA_VISUAL;
priv->view_window =
gdk_window_new (gtk_widget_get_parent_window ((GtkWidget*) revealer),
&attributes, attributes_mask);
gtk_widget_set_window (widget, priv->view_window);
gtk_widget_register_window (widget, priv->view_window);
gtk_revealer_get_child_allocation (revealer, &allocation, &child_allocation);
attributes.x = 0;
attributes.y = 0;
attributes.width = child_allocation.width;
attributes.height = child_allocation.height;
transition = effective_transition (revealer);
if (transition == GTK_REVEALER_TRANSITION_TYPE_SLIDE_DOWN)
attributes.y = allocation.height - child_allocation.height;
else if (transition == GTK_REVEALER_TRANSITION_TYPE_SLIDE_RIGHT)
attributes.x = allocation.width - child_allocation.width;
priv->bin_window =
gdk_window_new (priv->view_window, &attributes, attributes_mask);
gtk_widget_register_window (widget, priv->bin_window);
child = gtk_bin_get_child (GTK_BIN (revealer));
if (child != NULL)
gtk_widget_set_parent_window (child, priv->bin_window);
context = gtk_widget_get_style_context (widget);
gtk_style_context_set_background (context, priv->view_window);
gtk_style_context_set_background (context, priv->bin_window);
gdk_window_show (priv->bin_window);
}
static void
gtk_revealer_real_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkRevealer *revealer = GTK_REVEALER (widget);
GtkRevealerPrivate *priv = gtk_revealer_get_instance_private (revealer);
GtkAllocation child_allocation;
GtkWidget *child;
gboolean window_visible;
int bin_x, bin_y;
GtkRevealerTransitionType transition;
g_return_if_fail (allocation != NULL);
gtk_widget_set_allocation (widget, allocation);
gtk_revealer_get_child_allocation (revealer, allocation, &child_allocation);
child = gtk_bin_get_child (GTK_BIN (revealer));
if (child != NULL && gtk_widget_get_visible (child))
gtk_widget_size_allocate (child, &child_allocation);
if (gtk_widget_get_realized (widget))
{
if (gtk_widget_get_mapped (widget))
{
window_visible = allocation->width > 0 && allocation->height > 0;
if (!window_visible && gdk_window_is_visible (priv->view_window))
gdk_window_hide (priv->view_window);
if (window_visible && !gdk_window_is_visible (priv->view_window))
gdk_window_show (priv->view_window);
}
gdk_window_move_resize (priv->view_window,
allocation->x, allocation->y,
allocation->width, allocation->height);
bin_x = 0;
bin_y = 0;
transition = effective_transition (revealer);
if (transition == GTK_REVEALER_TRANSITION_TYPE_SLIDE_DOWN)
bin_y = allocation->height - child_allocation.height;
else if (transition == GTK_REVEALER_TRANSITION_TYPE_SLIDE_RIGHT)
bin_x = allocation->width - child_allocation.width;
gdk_window_move_resize (priv->bin_window,
bin_x, bin_y,
child_allocation.width, child_allocation.height);
}
}
static void
gtk_revealer_real_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkRevealer *revealer = GTK_REVEALER (widget);
GtkRevealerPrivate *priv = gtk_revealer_get_instance_private (revealer);
GtkAllocation child_allocation;
GtkWidget *child;
gboolean window_visible;
int bin_x, bin_y;
GtkRevealerTransitionType transition;
GtkBorder padding;
g_return_if_fail (allocation != NULL);
gtk_widget_set_allocation (widget, allocation);
gtk_revealer_get_child_allocation (revealer, allocation, &child_allocation);
child = gtk_bin_get_child (GTK_BIN (revealer));
if (child != NULL && gtk_widget_get_visible (child))
gtk_widget_size_allocate (child, &child_allocation);
if (gtk_widget_get_realized (widget))
{
if (gtk_widget_get_mapped (widget))
{
window_visible = allocation->width > 0 && allocation->height > 0;
if (!window_visible && gdk_window_is_visible (priv->view_window))
gdk_window_hide (priv->view_window);
if (window_visible && !gdk_window_is_visible (priv->view_window))
gdk_window_show (priv->view_window);
}
/* The view window will follow the revealer allocation, which is modified
* along the animation */
gdk_window_move_resize (priv->view_window,
allocation->x, allocation->y,
allocation->width, allocation->height);
gtk_revealer_get_padding (revealer, &padding);
bin_x = 0;
bin_y = 0;
transition = effective_transition (revealer);
/* The child allocation is fixed (it is not modified by the animation),
* and it's origin is relative to the bin_window.
* The bin_window has the same allocation as the child, and then the bin_window
* deals with the relative positioning with respect to the revealer taking
* into account the paddings of the revealer.
*
* For most of transitions, the bin_window moves along with the revealer,
* as its allocation changes.
* However for GTK_REVEALER_TRANSITION_TYPE_SLIDE_DOWN
* we need to first move the bin_window upwards and then slide it down in
* the revealer.
* Otherwise the child would appear as static and the revealer will allocate
* following the animation, clipping the child.
* To calculate the correct y position for this case:
* allocation->height - child_allocation.height is the relative position
* towards the revealer taking into account the animation progress with
* both vertical paddings added, therefore we need to substract the part
* that we don't want to take into account for the y position, which
* in this case is the bottom padding.
*
* The same special treatment is needed for GTK_REVEALER_TRANSITION_TYPE_SLIDE_RIGHT.
*/
if (transition == GTK_REVEALER_TRANSITION_TYPE_SLIDE_DOWN)
{
bin_y = allocation->height - child_allocation.height - padding.bottom;
bin_x = padding.left;
}
else if (transition == GTK_REVEALER_TRANSITION_TYPE_SLIDE_RIGHT)
{
bin_y = padding.top;
bin_x = allocation->width - child_allocation.width - padding.right;
}
else
{
bin_x = padding.left;
bin_y = padding.top;
}
gdk_window_move_resize (priv->bin_window,
bin_x, bin_y,
child_allocation.width, child_allocation.height);
}
}
static void
gtk_revealer_real_realize (GtkWidget *widget)
{
GtkRevealer *revealer = GTK_REVEALER (widget);
GtkRevealerPrivate *priv = gtk_revealer_get_instance_private (revealer);
GtkAllocation allocation;
GdkWindowAttr attributes = { 0 };
GdkWindowAttributesType attributes_mask;
GtkAllocation child_allocation;
GtkWidget *child;
GtkRevealerTransitionType transition;
GtkBorder padding;
gtk_widget_set_realized (widget, TRUE);
gtk_widget_get_allocation (widget, &allocation);
attributes.x = allocation.x;
attributes.y = allocation.y;
attributes.width = allocation.width;
attributes.height = allocation.height;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.event_mask =
gtk_widget_get_events (widget);
attributes_mask = (GDK_WA_X | GDK_WA_Y) | GDK_WA_VISUAL;
priv->view_window =
gdk_window_new (gtk_widget_get_parent_window ((GtkWidget*) revealer),
&attributes, attributes_mask);
gtk_widget_set_window (widget, priv->view_window);
gtk_widget_register_window (widget, priv->view_window);
gtk_revealer_get_child_allocation (revealer, &allocation, &child_allocation);
gtk_revealer_get_padding (revealer, &padding);
attributes.x = 0;
attributes.y = 0;
attributes.width = child_allocation.width;
attributes.height = child_allocation.height;
/* See explanation on gtk_revealer_real_size_allocate */
transition = effective_transition (revealer);
if (transition == GTK_REVEALER_TRANSITION_TYPE_SLIDE_DOWN)
{
attributes.y = allocation.height - child_allocation.height - padding.bottom;
attributes.x = padding.left;
}
else if (transition == GTK_REVEALER_TRANSITION_TYPE_SLIDE_RIGHT)
{
attributes.y = padding.top;
attributes.x = allocation.width - child_allocation.width - padding.right;
}
else
{
attributes.y = padding.top;
attributes.x = padding.left;
}
priv->bin_window =
gdk_window_new (priv->view_window, &attributes, attributes_mask);
gtk_widget_register_window (widget, priv->bin_window);
child = gtk_bin_get_child (GTK_BIN (revealer));
if (child != NULL)
gtk_widget_set_parent_window (child, priv->bin_window);
gdk_window_show (priv->bin_window);
}