mutter/clutter/osx/clutter-backend-osx.c

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/* Clutter - An OpenGL based 'interactive canvas' library.
* OSX backend - initial entry point
*
* Copyright (C) 2007-2008 Tommi Komulainen <tommi.komulainen@iki.fi>
* Copyright (C) 2007 OpenedHand Ltd.
* Copyright (C) 2011 Crystalnix <vgachkaylo@crystalnix.com>
*
* 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/>.
*
*
*/
#include "config.h"
#include "clutter-osx.h"
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#include "clutter-backend-osx.h"
#include "clutter-device-manager-osx.h"
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#include "clutter-shader.h"
#include "clutter-stage-osx.h"
#include "clutter-event-loop-osx.h"
#include "clutter-debug.h"
#include "clutter-private.h"
#include "clutter-stage-private.h"
#include "cogl/cogl.h"
#import <AppKit/AppKit.h>
#define clutter_backend_osx_get_type _clutter_backend_osx_get_type
G_DEFINE_TYPE (ClutterBackendOSX, clutter_backend_osx, CLUTTER_TYPE_BACKEND)
/*************************************************************************/
static gboolean
clutter_backend_osx_post_parse (ClutterBackend *backend,
GError **error)
{
CLUTTER_OSX_POOL_ALLOC();
/* getting standart dpi for main screen */
NSDictionary* prop = [[NSScreen mainScreen] deviceDescription];
NSSize size;
[[prop valueForKey:@"NSDeviceResolution"] getValue:&size];
CLUTTER_OSX_POOL_RELEASE();
/* setting dpi for backend, it needs by font rendering library */
if (size.height > 0)
{
ClutterSettings *settings = clutter_settings_get_default ();
int font_dpi = size.height * 1024;
g_object_set (settings, "font-dpi", font_dpi, NULL);
return TRUE;
}
return FALSE;
}
static ClutterFeatureFlags
clutter_backend_osx_get_features (ClutterBackend *backend)
{
return CLUTTER_FEATURE_STAGE_MULTIPLE
| CLUTTER_FEATURE_STAGE_USER_RESIZE;
}
void
_clutter_backend_osx_events_init (ClutterBackend *backend)
{
ClutterBackendOSX *backend_osx = CLUTTER_BACKEND_OSX (backend);
if (backend_osx->device_manager != NULL)
return;
CLUTTER_NOTE (BACKEND, "init_events");
backend->device_manager = backend_osx->device_manager =
g_object_new (CLUTTER_TYPE_DEVICE_MANAGER_OSX,
"backend", CLUTTER_BACKEND(backend_osx),
NULL);
_clutter_osx_event_loop_init ();
}
static gboolean
clutter_backend_osx_create_context (ClutterBackend *backend,
GError **error)
{
ClutterBackendOSX *backend_osx = CLUTTER_BACKEND_OSX (backend);
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CLUTTER_OSX_POOL_ALLOC();
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if (backend_osx->context == nil)
{
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/* Allocate ourselves a GL context. Since we're supposed to have
* only one per backend we can just as well create it now.
*/
NSOpenGLPixelFormatAttribute attrs[] = {
NSOpenGLPFADoubleBuffer,
NSOpenGLPFADepthSize, 32,
NSOpenGLPFAStencilSize, 8,
0
};
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#ifdef MAC_OS_X_VERSION_10_5
const int sw = 1;
#else
const long sw = 1;
#endif
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backend_osx->pixel_format = [[NSOpenGLPixelFormat alloc] initWithAttributes:attrs];
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backend_osx->context = [[NSOpenGLContext alloc] initWithFormat: backend_osx->pixel_format
shareContext: nil];
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/* Enable vblank sync - http://developer.apple.com/qa/qa2007/qa1521.html */
[backend_osx->context setValues:&sw forParameter: NSOpenGLCPSwapInterval];
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CLUTTER_NOTE (BACKEND, "Context was created");
}
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[backend_osx->context makeCurrentContext];
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CLUTTER_OSX_POOL_RELEASE();
return TRUE;
}
static void
clutter_backend_osx_ensure_context (ClutterBackend *backend,
ClutterStage *wrapper)
{
ClutterBackendOSX *backend_osx = CLUTTER_BACKEND_OSX (backend);
CLUTTER_OSX_POOL_ALLOC();
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CLUTTER_NOTE (BACKEND, "ensure_context: wrapper=%p", wrapper);
if (wrapper)
{
ClutterStageWindow *impl = _clutter_stage_get_window (wrapper);
ClutterStageOSX *stage_osx;
g_assert (CLUTTER_IS_STAGE_OSX (impl));
stage_osx = CLUTTER_STAGE_OSX (impl);
[backend_osx->context clearDrawable];
[backend_osx->context setView:stage_osx->view];
[backend_osx->context makeCurrentContext];
}
else
{
[backend_osx->context clearDrawable];
[NSOpenGLContext clearCurrentContext];
}
CLUTTER_OSX_POOL_RELEASE();
}
/*************************************************************************/
static void
clutter_backend_osx_init (ClutterBackendOSX *backend_osx)
{
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const ProcessSerialNumber psn = { 0, kCurrentProcess };
backend_osx->context = nil;
backend_osx->pixel_format = nil;
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/* Bring our app to foreground, background apps don't appear in dock or
* accept keyboard focus.
*/
TransformProcessType (&psn, kProcessTransformToForegroundApplication);
/* Also raise our app to front, otherwise our window will remain under the
* terminal.
*/
SetFrontProcess (&psn);
[NSApplication sharedApplication];
}
static void
clutter_backend_osx_dispose (GObject *object)
{
ClutterBackendOSX *self = CLUTTER_BACKEND_OSX (object);
[self->context release];
self->context = NULL;
[self->pixel_format release];
self->pixel_format = NULL;
G_OBJECT_CLASS (clutter_backend_osx_parent_class)->dispose (object);
}
static void
clutter_backend_osx_class_init (ClutterBackendOSXClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
ClutterBackendClass *backend_class = CLUTTER_BACKEND_CLASS (klass);
object_class->dispose = clutter_backend_osx_dispose;
backend_class->stage_window_type = CLUTTER_TYPE_STAGE_OSX;
backend_class->post_parse = clutter_backend_osx_post_parse;
backend_class->get_features = clutter_backend_osx_get_features;
backend_class->create_context = clutter_backend_osx_create_context;
backend_class->ensure_context = clutter_backend_osx_ensure_context;
}