| /* |
| * Copyright (C) 2012 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 "QtWebPageSGNode.h" |
| |
| #include "LayerTreeRenderer.h" |
| #include <QtGui/QPolygonF> |
| #include <QtQuick/QSGSimpleRectNode> |
| #include <private/qsgrendernode_p.h> |
| |
| using namespace WebCore; |
| |
| namespace WebKit { |
| |
| class ContentsSGNode : public QSGRenderNode { |
| public: |
| ContentsSGNode(PassRefPtr<LayerTreeRenderer> renderer) |
| : m_renderer(renderer) |
| { |
| layerTreeRenderer()->setActive(true); |
| } |
| |
| virtual StateFlags changedStates() |
| { |
| return StateFlags(StencilState) | ColorState | BlendState; |
| } |
| |
| virtual void render(const RenderState& state) |
| { |
| QMatrix4x4 renderMatrix = matrix() ? *matrix() : QMatrix4x4(); |
| |
| // When rendering to an intermediate surface, Qt will |
| // mirror the projection matrix to fit on the destination coordinate system. |
| const QMatrix4x4* projection = state.projectionMatrix; |
| bool mirrored = projection && (*projection)(0, 0) * (*projection)(1, 1) - (*projection)(0, 1) * (*projection)(1, 0) > 0; |
| |
| // FIXME: Support non-rectangular clippings. |
| layerTreeRenderer()->paintToCurrentGLContext(renderMatrix, inheritedOpacity(), clipRect(), mirrored ? TextureMapper::PaintingMirrored : 0); |
| } |
| |
| ~ContentsSGNode() |
| { |
| layerTreeRenderer()->purgeGLResources(); |
| } |
| |
| LayerTreeRenderer* layerTreeRenderer() const { return m_renderer.get(); } |
| |
| private: |
| QRectF clipRect() const |
| { |
| // Start with an invalid rect. |
| QRectF resultRect(0, 0, -1, -1); |
| |
| for (const QSGClipNode* clip = clipList(); clip; clip = clip->clipList()) { |
| QMatrix4x4 clipMatrix; |
| if (clip->matrix()) |
| clipMatrix = *clip->matrix(); |
| QRectF currentClip; |
| |
| if (clip->isRectangular()) |
| currentClip = clipMatrix.mapRect(clip->clipRect()); |
| else { |
| const QSGGeometry* geometry = clip->geometry(); |
| // Assume here that clipNode has only coordinate data. |
| const QSGGeometry::Point2D* geometryPoints = geometry->vertexDataAsPoint2D(); |
| |
| // Clip region should be at least triangle to make valid clip. |
| if (geometry->vertexCount() < 3) |
| continue; |
| |
| QPolygonF polygon; |
| |
| for (int i = 0; i < geometry->vertexCount(); i++) |
| polygon.append(clipMatrix.map(QPointF(geometryPoints[i].x, geometryPoints[i].y))); |
| currentClip = polygon.boundingRect(); |
| } |
| |
| if (currentClip.isEmpty()) |
| continue; |
| |
| if (resultRect.isValid()) |
| resultRect &= currentClip; |
| else |
| resultRect = currentClip; |
| } |
| |
| return resultRect; |
| } |
| |
| RefPtr<LayerTreeRenderer> m_renderer; |
| }; |
| |
| QtWebPageSGNode::QtWebPageSGNode() |
| : m_contentsNode(0) |
| , m_backgroundNode(new QSGSimpleRectNode) |
| { |
| appendChildNode(m_backgroundNode); |
| } |
| |
| void QtWebPageSGNode::setBackground(const QRectF& rect, const QColor& color) |
| { |
| m_backgroundNode->setRect(rect); |
| m_backgroundNode->setColor(color); |
| } |
| |
| void QtWebPageSGNode::setScale(float scale) |
| { |
| QMatrix4x4 matrix; |
| matrix.scale(scale); |
| setMatrix(matrix); |
| } |
| |
| void QtWebPageSGNode::setRenderer(PassRefPtr<LayerTreeRenderer> renderer) |
| { |
| if (m_contentsNode && m_contentsNode->layerTreeRenderer() == renderer) |
| return; |
| |
| delete m_contentsNode; |
| m_contentsNode = new ContentsSGNode(renderer); |
| appendChildNode(m_contentsNode); |
| } |
| |
| } // namespace WebKit |