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/*
* Copyright (C) 2016 Red Hat Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* SECTION:meta-renderer-view
* @title: MetaRendererView
* @short_description: Renders (a part of) the global stage.
*
* A MetaRendererView object is responsible for rendering (a part of) the
* global stage, or more precisely: the part that matches what can be seen on a
* #MetaLogicalMonitor. By splitting up the rendering into different parts and
* attaching it to a #MetaLogicalMonitor, we can do the rendering so that each
* renderer view is responsible for applying the right #MetaMonitorTransform
* and the right scaling.
*/
#include "config.h"
#include "backends/meta-renderer-view.h"
#include "backends/meta-crtc.h"
#include "backends/meta-renderer.h"
#include "clutter/clutter-mutter.h"
#include "compositor/region-utils.h"
enum
{
PROP_0,
PROP_TRANSFORM,
PROP_CRTC,
PROP_LAST
};
static GParamSpec *obj_props[PROP_LAST];
typedef struct _MetaRendererViewPrivate
{
MetaMonitorTransform transform;
MetaCrtc *crtc;
} MetaRendererViewPrivate;
G_DEFINE_TYPE_WITH_PRIVATE (MetaRendererView, meta_renderer_view,
META_TYPE_STAGE_VIEW)
MetaMonitorTransform
meta_renderer_view_get_transform (MetaRendererView *view)
{
MetaRendererViewPrivate *priv =
meta_renderer_view_get_instance_private (view);
return priv->transform;
}
MetaCrtc *
meta_renderer_view_get_crtc (MetaRendererView *view)
{
MetaRendererViewPrivate *priv =
meta_renderer_view_get_instance_private (view);
return priv->crtc;
}
static void
meta_renderer_view_get_offscreen_transformation_matrix (ClutterStageView *view,
graphene_matrix_t *matrix)
{
MetaRendererView *renderer_view = META_RENDERER_VIEW (view);
MetaRendererViewPrivate *priv =
meta_renderer_view_get_instance_private (renderer_view);
graphene_matrix_init_identity (matrix);
meta_monitor_transform_transform_matrix (
meta_monitor_transform_invert (priv->transform), matrix);
}
static void
meta_renderer_view_setup_offscreen_blit_pipeline (ClutterStageView *view,
CoglPipeline *pipeline)
{
graphene_matrix_t matrix;
meta_renderer_view_get_offscreen_transformation_matrix (view, &matrix);
cogl_pipeline_set_layer_matrix (pipeline, 0, &matrix);
}
static void
meta_renderer_view_transform_rect_to_onscreen (ClutterStageView *view,
const cairo_rectangle_int_t *src_rect,
int dst_width,
int dst_height,
cairo_rectangle_int_t *dst_rect)
{
MetaRendererView *renderer_view = META_RENDERER_VIEW (view);
MetaRendererViewPrivate *priv =
meta_renderer_view_get_instance_private (renderer_view);
return meta_rectangle_transform (src_rect,
priv->transform,
dst_width,
dst_height,
dst_rect);
}
static void
meta_renderer_view_set_transform (MetaRendererView *view,
MetaMonitorTransform transform)
{
MetaRendererViewPrivate *priv =
meta_renderer_view_get_instance_private (view);
if (priv->transform == transform)
return;
priv->transform = transform;
clutter_stage_view_invalidate_offscreen_blit_pipeline (CLUTTER_STAGE_VIEW (view));
}
static void
meta_renderer_view_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
MetaRendererView *view = META_RENDERER_VIEW (object);
MetaRendererViewPrivate *priv =
meta_renderer_view_get_instance_private (view);
switch (prop_id)
{
case PROP_TRANSFORM:
g_value_set_uint (value, priv->transform);
break;
case PROP_CRTC:
g_value_set_object (value, priv->crtc);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
meta_renderer_view_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
MetaRendererView *view = META_RENDERER_VIEW (object);
MetaRendererViewPrivate *priv =
meta_renderer_view_get_instance_private (view);
switch (prop_id)
{
case PROP_TRANSFORM:
meta_renderer_view_set_transform (view, g_value_get_uint (value));
break;
case PROP_CRTC:
priv->crtc = g_value_get_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
meta_renderer_view_init (MetaRendererView *view)
{
}
static void
meta_renderer_view_class_init (MetaRendererViewClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
ClutterStageViewClass *view_class = CLUTTER_STAGE_VIEW_CLASS (klass);
view_class->setup_offscreen_blit_pipeline =
meta_renderer_view_setup_offscreen_blit_pipeline;
view_class->get_offscreen_transformation_matrix =
meta_renderer_view_get_offscreen_transformation_matrix;
view_class->transform_rect_to_onscreen =
meta_renderer_view_transform_rect_to_onscreen;
object_class->get_property = meta_renderer_view_get_property;
object_class->set_property = meta_renderer_view_set_property;
obj_props[PROP_TRANSFORM] =
g_param_spec_uint ("transform",
"Transform",
"Transform to apply to the view",
META_MONITOR_TRANSFORM_NORMAL,
META_MONITOR_TRANSFORM_FLIPPED_270,
META_MONITOR_TRANSFORM_NORMAL,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS);
obj_props[PROP_CRTC] =
g_param_spec_object ("crtc",
"MetaCrtc",
"MetaCrtc",
META_TYPE_CRTC,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (object_class, PROP_LAST, obj_props);
}
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