1 files changed, 200 insertions, 0 deletions
diff --git a/client/screen_layer.cpp b/client/screen_layer.cpp
new file mode 100644
index 00000000..f521b465
--- /dev/null
+++ b/client/screen_layer.cpp
@@ -0,0 +1,200 @@
+/*
+   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);
+}
+