Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 73 insertions, 0 deletions

diff --git a/Source/WebKit2/UIProcess/qt/QtSGTileNode.cpp b/Source/WebKit2/UIProcess/qt/QtSGTileNode.cpp
new file mode 100644
index 000000000..229bafc7c
--- /dev/null
+++ b/Source/WebKit2/UIProcess/qt/QtSGTileNode.cpp
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2010, 2011 Nokia Corporation and/or its subsidiary(-ies)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this program; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+#include "QtSGTileNode.h"
+
+#include <QtQuick/QSGEngine>
+#include <QtQuick/QSGFlatColorMaterial>
+#include <QtQuick/QSGTexture>
+
+namespace WebKit {
+
+QtSGTileNode::QtSGTileNode(QSGEngine* engine)
+    : m_engine(engine)
+    , m_geometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 4)
+    , m_textureMaterialsCreated(false)
+{
+    setFlags(OwnsMaterial | OwnsOpaqueMaterial);
+    setGeometry(&m_geometry);
+    setMaterial(new QSGFlatColorMaterial);
+    setOpaqueMaterial(new QSGFlatColorMaterial);
+}
+
+void QtSGTileNode::setBackBuffer(const QImage& backBuffer, const QRectF& sourceRect, const QRectF& targetRect)
+{
+    m_backBufferTexture.reset(m_engine->createTextureFromImage(backBuffer));
+    m_backBufferTargetRect = targetRect;
+    m_backBufferSourceRect = m_backBufferTexture->convertToNormalizedSourceRect(sourceRect);
+
+    // Force the texture upload.
+    m_backBufferTexture->bind();
+}
+
+void QtSGTileNode::swapBuffersIfNeeded()
+{
+    if (!m_backBufferTexture)
+        return;
+
+    if (!m_textureMaterialsCreated) {
+        setMaterial(new QSGTextureMaterial);
+        setOpaqueMaterial(new QSGOpaqueTextureMaterial);
+        m_textureMaterialsCreated = true;
+    }
+
+    static_cast<QSGTextureMaterial*>(material())->setTexture(m_backBufferTexture.data());
+    static_cast<QSGOpaqueTextureMaterial*>(opaqueMaterial())->setTexture(m_backBufferTexture.data());
+    markDirty(DirtyMaterial);
+
+    QSGGeometry::updateTexturedRectGeometry(&m_geometry, m_backBufferTargetRect, m_backBufferSourceRect);
+    markDirty(DirtyGeometry);
+
+    m_frontBufferTexture.swap(m_backBufferTexture);
+    m_backBufferTexture.reset();
+}
+
+}