66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/**
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* SECTION:meta-background-group
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* @title: MetaBackgroundGroup
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* @short_description: Container for background actors
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*
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* This class is a subclass of ClutterActor with special handling for
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* MetaBackgroundActor/MetaBackgroundGroup when painting children.
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* It makes sure to only draw the parts of the backgrounds not
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* occluded by opaque windows.
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*
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* See #MetaWindowGroup for more information behind the motivation,
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* and details on implementation.
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*/
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#include "config.h"
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#include "compositor/meta-cullable.h"
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#include "meta/meta-background-group.h"
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static void cullable_iface_init (MetaCullableInterface *iface);
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G_DEFINE_TYPE_WITH_CODE (MetaBackgroundGroup, meta_background_group, CLUTTER_TYPE_ACTOR,
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G_IMPLEMENT_INTERFACE (META_TYPE_CULLABLE, cullable_iface_init));
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static void
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meta_background_group_class_init (MetaBackgroundGroupClass *klass)
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{
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}
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static void
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meta_background_group_cull_out (MetaCullable *cullable,
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cairo_region_t *unobscured_region,
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cairo_region_t *clip_region)
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{
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meta_cullable_cull_out_children (cullable, unobscured_region, clip_region);
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}
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static void
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meta_background_group_reset_culling (MetaCullable *cullable)
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{
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meta_cullable_reset_culling_children (cullable);
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}
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static void
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cullable_iface_init (MetaCullableInterface *iface)
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{
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iface->cull_out = meta_background_group_cull_out;
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iface->reset_culling = meta_background_group_reset_culling;
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}
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static void
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meta_background_group_init (MetaBackgroundGroup *self)
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{
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}
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ClutterActor *
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meta_background_group_new (void)
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{
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MetaBackgroundGroup *background_group;
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background_group = g_object_new (META_TYPE_BACKGROUND_GROUP, NULL);
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return CLUTTER_ACTOR (background_group);
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}
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