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backends: Add MetaStageView::transform property

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This property updates the ClutterStageView pipeline, so the texture is applied
with the corresponding transform.

https://bugzilla.gnome.org/show_bug.cgi?id=745079
This commit is contained in:
Carlos Garnacho 2016-08-01 03:05:44 +02:00
parent a6e15e841b
commit 89854f9244
1 changed files with 90 additions and 0 deletions
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90
src/backends/meta-renderer-view.c
View File

@ -27,6 +27,7 @@ enum
PROP_0,
PROP_MONITOR_INFO,
PROP_TRANSFORM,
PROP_LAST
};
@ -37,6 +38,7 @@ struct _MetaRendererView
{
ClutterStageViewCogl parent;
MetaMonitorTransform transform;
MetaMonitorInfo *monitor_info;
};
@ -49,6 +51,72 @@ meta_renderer_view_get_monitor_info (MetaRendererView *view)
return view->monitor_info;
}
static void
meta_renderer_view_get_offscreen_transformation_matrix (ClutterStageView *view,
CoglMatrix *matrix)
{
MetaRendererView *renderer_view = META_RENDERER_VIEW (view);
cogl_matrix_init_identity (matrix);
switch (renderer_view->transform)
{
case META_MONITOR_TRANSFORM_NORMAL:
break;
case META_MONITOR_TRANSFORM_90:
cogl_matrix_rotate (matrix, 90, 0, 0, 1);
cogl_matrix_translate (matrix, 0, -1, 0);
break;
case META_MONITOR_TRANSFORM_180:
cogl_matrix_rotate (matrix, 180, 0, 0, 1);
cogl_matrix_translate (matrix, -1, -1, 0);
break;
case META_MONITOR_TRANSFORM_270:
cogl_matrix_rotate (matrix, 270, 0, 0, 1);
cogl_matrix_translate (matrix, -1, 0, 0);
break;
case META_MONITOR_TRANSFORM_FLIPPED:
cogl_matrix_scale (matrix, -1, 1, 1);
cogl_matrix_translate (matrix, -1, 0, 0);
break;
case META_MONITOR_TRANSFORM_FLIPPED_90:
cogl_matrix_scale (matrix, -1, 1, 1);
cogl_matrix_rotate (matrix, 90, 0, 0, 1);
break;
case META_MONITOR_TRANSFORM_FLIPPED_180:
cogl_matrix_scale (matrix, -1, 1, 1);
cogl_matrix_rotate (matrix, 180, 0, 0, 1);
cogl_matrix_translate (matrix, 0, -1, 0);
break;
case META_MONITOR_TRANSFORM_FLIPPED_270:
cogl_matrix_scale (matrix, -1, 1, 1);
cogl_matrix_rotate (matrix, 270, 0, 0, 1);
cogl_matrix_translate (matrix, -1, -1, 0);
break;
}
}
static void
meta_renderer_view_setup_offscreen_blit_pipeline (ClutterStageView *view,
CoglPipeline *pipeline)
{
CoglMatrix matrix;
meta_renderer_view_get_offscreen_transformation_matrix (view, &matrix);
cogl_pipeline_set_layer_matrix (pipeline, 0, &matrix);
}
static void
meta_renderer_view_set_transform (MetaRendererView *view,
MetaMonitorTransform transform)
{
if (view->transform == transform)
return;
view->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,
@ -62,6 +130,9 @@ meta_renderer_view_get_property (GObject *object,
case PROP_MONITOR_INFO:
g_value_set_pointer (value, view->monitor_info);
break;
case PROP_TRANSFORM:
g_value_set_uint (value, view->transform);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -81,6 +152,9 @@ meta_renderer_view_set_property (GObject *object,
case PROP_MONITOR_INFO:
view->monitor_info = g_value_get_pointer (value);
break;
case PROP_TRANSFORM:
meta_renderer_view_set_transform (view, g_value_get_uint (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -96,6 +170,12 @@ 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;
object_class->get_property = meta_renderer_view_get_property;
object_class->set_property = meta_renderer_view_set_property;
@ -107,6 +187,16 @@ meta_renderer_view_class_init (MetaRendererViewClass *klass)
G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS |
G_PARAM_CONSTRUCT_ONLY);
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);
g_object_class_install_properties (object_class, PROP_LAST, obj_props);
}