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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2016 Red Hat
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* Written by:
* Jonas Ådahl <jadahl@gmail.com>
*/
/**
* SECTION:meta-renderer
* @title: MetaRenderer
* @short_description: Keeps track of the different renderer views.
*
* A MetaRenderer object has 2 functions:
*
* 1) Keeping a list of #MetaRendererView<!-- -->s, each responsible for
* rendering a part of the stage, corresponding to each #MetaLogicalMonitor. It
* keeps track of this list by querying the list of logical monitors in the
* #MetaBackend's #MetaMonitorManager, and creating a renderer view for each
* logical monitor it encounters.
*
* 2) Creating and setting up an appropriate #CoglRenderer. For example, a
* #MetaRenderer might call cogl_renderer_set_custom_winsys() to tie the
* backend-specific mechanisms into Cogl.
*/
#include "config.h"
#include "backends/meta-renderer.h"
#include <glib-object.h>
#include "backends/meta-backend-private.h"
typedef struct _MetaRendererPrivate
{
GList *views;
} MetaRendererPrivate;
G_DEFINE_TYPE_WITH_PRIVATE (MetaRenderer, meta_renderer, G_TYPE_OBJECT)
/**
* meta_renderer_create_cogl_renderer:
* @renderer: a #MetaRenderer object
*
* Creates a #CoglRenderer that is appropriate for a certain backend. For
* example, a #MetaRenderer might call cogl_renderer_set_custom_winsys() to tie
* the backend-specific mechanisms (such as swapBuffers and vsync) into Cogl.
*
* Returns: (transfer full): a newly made #CoglRenderer.
*/
CoglRenderer *
meta_renderer_create_cogl_renderer (MetaRenderer *renderer)
{
return META_RENDERER_GET_CLASS (renderer)->create_cogl_renderer (renderer);
}
static MetaRendererView *
meta_renderer_create_view (MetaRenderer *renderer,
MetaLogicalMonitor *logical_monitor)
{
return META_RENDERER_GET_CLASS (renderer)->create_view (renderer,
logical_monitor);
}
/**
* meta_renderer_rebuild_views:
* @renderer: a #MetaRenderer object
*
* Rebuilds the internal list of #MetaRendererView objects by querying the
* current #MetaBackend's #MetaMonitorManager.
*
* This also leads to the original list of monitors being unconditionally freed.
*/
void
meta_renderer_rebuild_views (MetaRenderer *renderer)
{
MetaRendererPrivate *priv = meta_renderer_get_instance_private (renderer);
MetaBackend *backend = meta_get_backend ();
MetaMonitorManager *monitor_manager =
meta_backend_get_monitor_manager (backend);
GList *logical_monitors, *l;
g_list_free_full (priv->views, g_object_unref);
priv->views = NULL;
logical_monitors =
meta_monitor_manager_get_logical_monitors (monitor_manager);
for (l = logical_monitors; l; l = l->next)
{
MetaLogicalMonitor *logical_monitor = l->data;
MetaRendererView *view;
view = meta_renderer_create_view (renderer, logical_monitor);
priv->views = g_list_append (priv->views, view);
}
}
void
meta_renderer_set_legacy_view (MetaRenderer *renderer,
MetaRendererView *legacy_view)
{
MetaRendererPrivate *priv = meta_renderer_get_instance_private (renderer);
g_assert (!priv->views);
priv->views = g_list_append (priv->views, legacy_view);
}
/**
* meta_renderer_get_views:
* @renderer: a #MetaRenderer object
*
* Returns a list of #MetaRendererView objects, each dealing with a part of the
* stage.
*
* Returns: (transfer none) (element-type MetaRendererView): a list of
* #MetaRendererView objects.
*/
GList *
meta_renderer_get_views (MetaRenderer *renderer)
{
MetaRendererPrivate *priv = meta_renderer_get_instance_private (renderer);
return priv->views;
}
static void
meta_renderer_finalize (GObject *object)
{
MetaRenderer *renderer = META_RENDERER (object);
MetaRendererPrivate *priv = meta_renderer_get_instance_private (renderer);
g_list_free_full (priv->views, g_object_unref);
priv->views = NULL;
}
static void
meta_renderer_init (MetaRenderer *renderer)
{
}
static void
meta_renderer_class_init (MetaRendererClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = meta_renderer_finalize;
}
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