+++ /dev/null
-/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
-
-/**
- * SECTION:shell-generic-container
- * @short_description: A container class with signals for allocation
- *
- * #ShellGenericContainer is mainly a workaround for the current
- * lack of GObject subclassing + vfunc overrides in gjs. We
- * implement the container interface, but proxy the virtual functions
- * into signals, which gjs can catch.
- *
- * #ShellGenericContainer is an #StWidget, and automatically takes its
- * borders and padding into account during size request and allocation.
- */
-
-#include "config.h"
-
-#include "shell-generic-container.h"
-
-#include <clutter/clutter.h>
-#include <gtk/gtk.h>
-#include <girepository.h>
-
-static void shell_generic_container_iface_init (ClutterContainerIface *iface);
-
-typedef struct _ShellGenericContainerPrivate ShellGenericContainerPrivate;
-
-struct _ShellGenericContainer
-{
- StWidget parent;
-
- ShellGenericContainerPrivate *priv;
-};
-
-struct _ShellGenericContainerPrivate {
- GHashTable *skip_paint;
-};
-
-G_DEFINE_TYPE_WITH_CODE(ShellGenericContainer,
- shell_generic_container,
- ST_TYPE_WIDGET,
- G_ADD_PRIVATE (ShellGenericContainer)
- G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_CONTAINER,
- shell_generic_container_iface_init));
-
-/* Signals */
-enum
-{
- GET_PREFERRED_WIDTH,
- GET_PREFERRED_HEIGHT,
- ALLOCATE,
- LAST_SIGNAL
-};
-
-static guint shell_generic_container_signals [LAST_SIGNAL] = { 0 };
-
-static gpointer
-shell_generic_container_allocation_ref (ShellGenericContainerAllocation *alloc)
-{
- alloc->_refcount++;
- return alloc;
-}
-
-static void
-shell_generic_container_allocation_unref (ShellGenericContainerAllocation *alloc)
-{
- if (--alloc->_refcount == 0)
- g_slice_free (ShellGenericContainerAllocation, alloc);
-}
-
-static void
-shell_generic_container_allocate (ClutterActor *self,
- const ClutterActorBox *box,
- ClutterAllocationFlags flags)
-{
- StThemeNode *theme_node;
- ClutterActorBox content_box;
-
- clutter_actor_set_allocation (self, box, flags);
-
- theme_node = st_widget_get_theme_node (ST_WIDGET (self));
- st_theme_node_get_content_box (theme_node, box, &content_box);
-
- g_signal_emit (G_OBJECT (self), shell_generic_container_signals[ALLOCATE], 0,
- &content_box, flags);
-}
-
-static void
-shell_generic_container_get_preferred_width (ClutterActor *actor,
- gfloat for_height,
- gfloat *min_width_p,
- gfloat *natural_width_p)
-{
- ShellGenericContainerAllocation *alloc = g_slice_new0 (ShellGenericContainerAllocation);
- StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (actor));
-
- st_theme_node_adjust_for_height (theme_node, &for_height);
-
- alloc->_refcount = 1;
- g_signal_emit (G_OBJECT (actor), shell_generic_container_signals[GET_PREFERRED_WIDTH], 0,
- for_height, alloc);
- if (min_width_p)
- *min_width_p = alloc->min_size;
- if (natural_width_p)
- *natural_width_p = alloc->natural_size;
- shell_generic_container_allocation_unref (alloc);
-
- st_theme_node_adjust_preferred_width (theme_node, min_width_p, natural_width_p);
-}
-
-static void
-shell_generic_container_get_preferred_height (ClutterActor *actor,
- gfloat for_width,
- gfloat *min_height_p,
- gfloat *natural_height_p)
-{
- ShellGenericContainerAllocation *alloc = g_slice_new0 (ShellGenericContainerAllocation);
- StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (actor));
-
- st_theme_node_adjust_for_width (theme_node, &for_width);
-
- alloc->_refcount = 1;
- g_signal_emit (G_OBJECT (actor), shell_generic_container_signals[GET_PREFERRED_HEIGHT], 0,
- for_width, alloc);
- if (min_height_p)
- *min_height_p = alloc->min_size;
- if (natural_height_p)
- *natural_height_p = alloc->natural_size;
- shell_generic_container_allocation_unref (alloc);
-
- st_theme_node_adjust_preferred_height (theme_node, min_height_p, natural_height_p);
-}
-
-static void
-shell_generic_container_paint (ClutterActor *actor)
-{
- ShellGenericContainer *self = (ShellGenericContainer*) actor;
- ClutterActor *child;
-
- st_widget_paint_background (ST_WIDGET (actor));
-
- for (child = clutter_actor_get_first_child (actor);
- child != NULL;
- child = clutter_actor_get_next_sibling (child))
- {
- if (g_hash_table_lookup (self->priv->skip_paint, child))
- continue;
-
- clutter_actor_paint (child);
- }
-}
-
-static void
-shell_generic_container_pick (ClutterActor *actor,
- const ClutterColor *color)
-{
- ShellGenericContainer *self = (ShellGenericContainer*) actor;
- ClutterActor *child;
-
- CLUTTER_ACTOR_CLASS (shell_generic_container_parent_class)->pick (actor, color);
-
- for (child = clutter_actor_get_first_child (actor);
- child != NULL;
- child = clutter_actor_get_next_sibling (child))
- {
- if (g_hash_table_lookup (self->priv->skip_paint, child))
- continue;
-
- clutter_actor_paint (child);
- }
-}
-
-static GList *
-shell_generic_container_get_focus_chain (StWidget *widget)
-{
- ShellGenericContainer *self = SHELL_GENERIC_CONTAINER (widget);
- ClutterActor *child;
- GList *focus_chain;
-
- focus_chain = NULL;
- for (child = clutter_actor_get_first_child (CLUTTER_ACTOR (self));
- child != NULL;
- child = clutter_actor_get_next_sibling (child))
- {
- if (clutter_actor_is_visible (child) &&
- !shell_generic_container_get_skip_paint (self, child))
- focus_chain = g_list_prepend (focus_chain, child);
- }
-
- return g_list_reverse (focus_chain);
-}
-
-/**
- * shell_generic_container_get_n_skip_paint:
- * @self: A #ShellGenericContainer
- *
- * Returns: Number of children which will not be painted.
- */
-guint
-shell_generic_container_get_n_skip_paint (ShellGenericContainer *self)
-{
- return g_hash_table_size (self->priv->skip_paint);
-}
-
-/**
- * shell_generic_container_get_skip_paint:
- * @self: A #ShellGenericContainer
- * @child: Child #ClutterActor
- *
- * Gets whether or not @actor is skipped when painting.
- *
- * Return value: %TRUE or %FALSE
- */
-gboolean
-shell_generic_container_get_skip_paint (ShellGenericContainer *self,
- ClutterActor *child)
-{
- return g_hash_table_lookup (self->priv->skip_paint, child) != NULL;
-}
-
-/**
- * shell_generic_container_set_skip_paint:
- * @self: A #ShellGenericContainer
- * @child: Child #ClutterActor
- * @skip: %TRUE if we should skip painting
- *
- * Set whether or not we should skip painting @actor. Workaround for
- * lack of gjs ability to override _paint vfunc.
- */
-void
-shell_generic_container_set_skip_paint (ShellGenericContainer *self,
- ClutterActor *child,
- gboolean skip)
-{
- gboolean currently_skipping;
-
- currently_skipping = g_hash_table_lookup (self->priv->skip_paint, child) != NULL;
- if ((!!skip) == currently_skipping)
- return;
-
- if (!skip)
- g_hash_table_remove (self->priv->skip_paint, child);
- else
- g_hash_table_insert (self->priv->skip_paint, child, child);
-
- clutter_actor_queue_redraw (CLUTTER_ACTOR (self));
-}
-
-static gboolean
-shell_generic_container_get_paint_volume (ClutterActor *self,
- ClutterPaintVolume *volume)
-{
- ClutterActorBox paint_box, alloc_box;
- StThemeNode *theme_node;
- ClutterVertex origin;
-
- /* Setting the paint volume does not make sense when we don't have any allocation */
- if (!clutter_actor_has_allocation (self))
- return FALSE;
-
- theme_node = st_widget_get_theme_node (ST_WIDGET (self));
- clutter_actor_get_allocation_box (self, &alloc_box);
-
- st_theme_node_get_paint_box (theme_node, &alloc_box, &paint_box);
-
- origin.x = paint_box.x1 - alloc_box.x1;
- origin.y = paint_box.y1 - alloc_box.y1;
- origin.z = 0.0f;
-
- clutter_paint_volume_set_origin (volume, &origin);
- clutter_paint_volume_set_width (volume, paint_box.x2 - paint_box.x1);
- clutter_paint_volume_set_height (volume, paint_box.y2 - paint_box.y1);
-
- if (!clutter_actor_get_clip_to_allocation (self))
- {
- ClutterActor *child;
- /* Based on ClutterGroup/ClutterBox; include the children's
- * paint volumes, since they may paint outside our allocation.
- */
- for (child = clutter_actor_get_first_child (self);
- child != NULL;
- child = clutter_actor_get_next_sibling (child))
- {
- const ClutterPaintVolume *child_volume;
-
- if (!clutter_actor_is_visible (child))
- continue;
-
- if (shell_generic_container_get_skip_paint (SHELL_GENERIC_CONTAINER (self), child))
- continue;
-
- child_volume = clutter_actor_get_transformed_paint_volume (child, self);
- if (!child_volume)
- return FALSE;
-
- clutter_paint_volume_union (volume, child_volume);
- }
- }
-
- return TRUE;
-}
-
-static void
-shell_generic_container_finalize (GObject *object)
-{
- ShellGenericContainer *self = (ShellGenericContainer*) object;
-
- g_hash_table_destroy (self->priv->skip_paint);
-
- G_OBJECT_CLASS (shell_generic_container_parent_class)->finalize (object);
-}
-
-static void
-shell_generic_container_class_init (ShellGenericContainerClass *klass)
-{
- GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
- ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
- StWidgetClass *widget_class = ST_WIDGET_CLASS (klass);
-
- gobject_class->finalize = shell_generic_container_finalize;
-
- actor_class->get_preferred_width = shell_generic_container_get_preferred_width;
- actor_class->get_preferred_height = shell_generic_container_get_preferred_height;
- actor_class->allocate = shell_generic_container_allocate;
- actor_class->paint = shell_generic_container_paint;
- actor_class->pick = shell_generic_container_pick;
- actor_class->get_paint_volume = shell_generic_container_get_paint_volume;
-
- widget_class->get_focus_chain = shell_generic_container_get_focus_chain;
-
- /**
- * ShellGenericContainer::get-preferred-width:
- * @self: the #ShellGenericContainer
- * @for_height: as in clutter_actor_get_preferred_width()
- * @alloc: a #ShellGenericContainerAllocation to be filled in
- *
- * Emitted when clutter_actor_get_preferred_width() is called
- * on @self. You should fill in the fields of @alloc with the
- * your minimum and natural widths. #ShellGenericContainer
- * will deal with taking its borders and padding into account
- * for you.
- *
- * @alloc's fields are initialized to 0, so unless you have a fixed
- * width specified (via #ClutterActor:width or CSS), you must
- * connect to this signal and fill in the values.
- */
- shell_generic_container_signals[GET_PREFERRED_WIDTH] =
- g_signal_new ("get-preferred-width",
- G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST,
- 0,
- NULL, NULL, NULL,
- G_TYPE_NONE, 2, G_TYPE_FLOAT, SHELL_TYPE_GENERIC_CONTAINER_ALLOCATION);
-
- /**
- * ShellGenericContainer::get-preferred-height:
- * @self: the #ShellGenericContainer
- * @for_width: as in clutter_actor_get_preferred_height()
- * @alloc: a #ShellGenericContainerAllocation to be filled in
- *
- * Emitted when clutter_actor_get_preferred_height() is called
- * on @self. You should fill in the fields of @alloc with the
- * your minimum and natural heights. #ShellGenericContainer
- * will deal with taking its borders and padding into account
- * for you.
- *
- * @alloc's fields are initialized to 0, so unless you have a fixed
- * height specified (via #ClutterActor:height or CSS), you must
- * connect to this signal and fill in the values.
- */
- shell_generic_container_signals[GET_PREFERRED_HEIGHT] =
- g_signal_new ("get-preferred-height",
- G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST,
- 0,
- NULL, NULL, NULL,
- G_TYPE_NONE, 2, G_TYPE_FLOAT, SHELL_TYPE_GENERIC_CONTAINER_ALLOCATION);
-
- /**
- * ShellGenericContainer::allocate:
- * @self: the #ShellGenericContainer
- * @box: @self's content box
- * @flags: the allocation flags.
- *
- * Emitted when @self is allocated, after chaining up to the parent
- * allocate method.
- *
- * Note that @box is @self's content box (qv
- * st_theme_node_get_content_box()), NOT its allocation.
- */
- shell_generic_container_signals[ALLOCATE] =
- g_signal_new ("allocate",
- G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST,
- 0,
- NULL, NULL, NULL,
- G_TYPE_NONE, 2, CLUTTER_TYPE_ACTOR_BOX, CLUTTER_TYPE_ALLOCATION_FLAGS);
-}
-
-static void
-shell_generic_container_actor_removed (ClutterContainer *container,
- ClutterActor *actor)
-{
- ShellGenericContainerPrivate *priv = SHELL_GENERIC_CONTAINER (container)->priv;
-
- g_hash_table_remove (priv->skip_paint, actor);
-}
-
-static void
-shell_generic_container_iface_init (ClutterContainerIface *iface)
-{
- iface->actor_removed = shell_generic_container_actor_removed;
-}
-
-static void
-shell_generic_container_init (ShellGenericContainer *area)
-{
- area->priv = shell_generic_container_get_instance_private (area);
- area->priv->skip_paint = g_hash_table_new (NULL, NULL);
-}
-
-GType
-shell_generic_container_allocation_get_type (void)
-{
- static GType gtype = G_TYPE_INVALID;
- if (gtype == G_TYPE_INVALID)
- {
- gtype = g_boxed_type_register_static ("ShellGenericContainerAllocation",
- (GBoxedCopyFunc)shell_generic_container_allocation_ref,
- (GBoxedFreeFunc)shell_generic_container_allocation_unref);
- }
- return gtype;
-}
projects / gnome-shell.git / commitdiff