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/*
Copyright (C) 2009 Red Hat, Inc.
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, see <http://www.gnu.org/licenses/>.
*/
#include "common.h"
#include "screen_layer.h"
#include "utils.h"
#include "screen.h"
#include "application.h"
#include "debug.h"
class AttacheLayerEvent: public SyncEvent {
public:
AttacheLayerEvent(ScreenLayer& layer, int screen_id) : _layer (layer), _screen_id (screen_id) {}
virtual void do_responce(Application& application);
private:
ScreenLayer& _layer;
int _screen_id;
};
void AttacheLayerEvent::do_responce(Application& application)
{
AutoRef<RedScreen> screen(application.get_screen(_screen_id));
(*screen)->attach_layer(_layer);
}
class DetacheLayerEvent: public SyncEvent {
public:
DetacheLayerEvent(ScreenLayer& _layer) : _layer (_layer) {}
virtual void do_responce(Application& application);
private:
ScreenLayer& _layer;
};
void DetacheLayerEvent::do_responce(Application& application)
{
_layer.screen()->detach_layer(_layer);
}
ScreenLayer::ScreenLayer(int z_order, bool opaque)
: _screen (NULL)
, _z_order (z_order)
, _opaque (opaque)
, _using_ogl (false)
{
region_init(&_area);
region_init(&_direct_area);
region_init(&_composit_area);
}
ScreenLayer::~ScreenLayer()
{
ASSERT(!_screen);
region_destroy(&_area);
region_destroy(&_direct_area);
region_destroy(&_composit_area);
}
uint64_t ScreenLayer::invalidate_rect(const Rect& r, bool urgent)
{
return _screen->invalidate(r, urgent);
}
uint64_t ScreenLayer::invalidate(const Rect& r, bool urgent)
{
if (!_screen) {
return 0;
}
return invalidate_rect(r, urgent);
}
void ScreenLayer::invalidate(const QRegion& region)
{
if (!_screen) {
return;
}
Rect *r = region.rects;
Rect *end = r + region.num_rects;
while (r != end) {
invalidate_rect(*r++, false);
}
}
void ScreenLayer::invalidate()
{
invalidate(_area);
}
void ScreenLayer::set_area(const QRegion& area)
{
Lock lock(_area_lock);
invalidate();
region_destroy(&_area);
region_clone(&_area, &area);
invalidate();
}
void ScreenLayer::clear_area()
{
Lock lock(_area_lock);
invalidate();
region_clear(&_area);
}
void ScreenLayer::set_rect_area(const Rect& r)
{
Lock lock(_area_lock);
invalidate();
region_clear(&_area);
region_add(&_area, &r);
invalidate();
}
void ScreenLayer::offset_area(int dx, int dy)
{
Lock lock(_area_lock);
invalidate();
region_offset(&_area, dx, dy);
invalidate();
}
void ScreenLayer::add_rect_area(const Rect& r)
{
Lock lock(_area_lock);
region_add(&_area, &r);
}
void ScreenLayer::remove_rect_area(const Rect& r)
{
Lock lock(_area_lock);
invalidate();
region_remove(&_area, &r);
}
void ScreenLayer::begin_update(QRegion& direct_rgn, QRegion& composit_rgn)
{
Lock lock(_area_lock);
region_destroy(&_direct_area);
region_clone(&_direct_area, &_area);
region_and(&_direct_area, &direct_rgn);
region_destroy(&_composit_area);
region_clone(&_composit_area, &_area);
region_and(&_composit_area, &composit_rgn);
region_exclude(&direct_rgn, &_direct_area);
if (_opaque) {
region_exclude(&composit_rgn, &_composit_area);
} else {
region_or(&composit_rgn, &_direct_area);
region_or(&_composit_area, &_direct_area);
region_clear(&_direct_area);
}
}
void ScreenLayer::attach_to_screen(Application& applicaion, int screen_id)
{
if (_screen) {
return;
}
AutoRef<AttacheLayerEvent> event(new AttacheLayerEvent(*this, screen_id));
applicaion.push_event(*event);
(*event)->wait();
if (!(*event)->success()) {
THROW("attach failed");
}
ASSERT(_screen);
}
void ScreenLayer::detach_from_screen(Application& applicaion)
{
if (!_screen) {
return;
}
AutoRef<DetacheLayerEvent> event(new DetacheLayerEvent(*this));
applicaion.push_event(*event);
(*event)->wait();
if (!(*event)->success()) {
THROW("detach failed");
}
ASSERT(!_screen);
}
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