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/*
* 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 "qquickwebpage_p.h"
#include "LayerTreeHostProxy.h"
#include "QtWebPageEventHandler.h"
#include "TransformationMatrix.h"
#include "WebLayerTreeRenderer.h"
#include "qquickwebpage_p_p.h"
#include "qquickwebview_p.h"
#include <QPolygonF>
#include <QtQuick/QQuickCanvas>
#include <QtQuick/QSGGeometryNode>
#include <QtQuick/QSGMaterial>
#include <private/qsgrendernode_p.h>
QQuickWebPage::QQuickWebPage(QQuickWebView* viewportItem)
: QQuickItem(viewportItem)
, d(new QQuickWebPagePrivate(this, viewportItem))
{
setFlag(ItemHasContents);
setClip(true);
// We do the transform from the top left so the viewport can assume the position 0, 0
// is always where rendering starts.
setTransformOrigin(TopLeft);
}
QQuickWebPage::~QQuickWebPage()
{
delete d;
}
QQuickWebPagePrivate::QQuickWebPagePrivate(QQuickWebPage* q, QQuickWebView* viewportItem)
: q(q)
, viewportItem(viewportItem)
, webPageProxy(0)
, paintingIsInitialized(false)
, m_paintNode(0)
, contentsScale(1)
{
}
void QQuickWebPagePrivate::initialize(WebKit::WebPageProxy* webPageProxy)
{
this->webPageProxy = webPageProxy;
eventHandler.reset(new QtWebPageEventHandler(toAPI(webPageProxy), q, viewportItem));
}
void QQuickWebPagePrivate::setDrawingAreaSize(const QSize& size)
{
DrawingAreaProxy* drawingArea = webPageProxy->drawingArea();
if (!drawingArea)
return;
drawingArea->setSize(WebCore::IntSize(size), WebCore::IntSize());
}
void QQuickWebPagePrivate::paint(QPainter* painter)
{
if (webPageProxy->drawingArea())
webPageProxy->drawingArea()->paintLayerTree(painter);
}
struct PageProxyNode : public QSGRenderNode {
PageProxyNode(PassRefPtr<WebLayerTreeRenderer> renderer)
: m_renderer(renderer)
, m_scale(1)
{
}
virtual StateFlags changedStates()
{
return StateFlags(StencilState) | ColorState | BlendState;
}
virtual void render(const RenderState&)
{
QMatrix4x4 renderMatrix = matrix() ? *matrix() : QMatrix4x4();
// Have to apply render scale manualy because it is not applied on page item.
// http://trac.webkit.org/changeset/104450
renderMatrix.scale(m_scale);
// FIXME: Support non-rectangular clippings.
layerTreeRenderer()->paintToCurrentGLContext(renderMatrix, inheritedOpacity(), clipRect());
}
~PageProxyNode()
{
layerTreeRenderer()->purgeGLResources();
}
WebLayerTreeRenderer* layerTreeRenderer() const { return m_renderer.get(); }
void setScale(float scale) { m_scale = scale; }
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(QPoint(geometryPoints[i].x, geometryPoints[i].y)));
currentClip = polygon.boundingRect();
}
if (currentClip.isEmpty())
continue;
if (resultRect.isValid())
resultRect &= currentClip;
else
resultRect = currentClip;
}
return resultRect;
}
RefPtr<WebLayerTreeRenderer> m_renderer;
float m_scale;
};
QSGNode* QQuickWebPage::updatePaintNode(QSGNode* oldNode, UpdatePaintNodeData*)
{
if (!d->webPageProxy->drawingArea())
return oldNode;
LayerTreeHostProxy* layerTreeHostProxy = d->webPageProxy->drawingArea()->layerTreeHostProxy();
WebLayerTreeRenderer* renderer = layerTreeHostProxy->layerTreeRenderer();
PageProxyNode* node = static_cast<PageProxyNode*>(oldNode);
if (node && node->layerTreeRenderer() != renderer) {
// This means that LayerTreeHostProxy was deleted and recreated while old paint node survived.
// This could happen if web process have crashed. In this case we have to recreate paint node.
delete node;
node = 0;
}
renderer->syncRemoteContent();
if (!node)
node = new PageProxyNode(renderer);
node->setScale(d->contentsScale);
return node;
}
QtWebPageEventHandler* QQuickWebPage::eventHandler() const
{
return d->eventHandler.data();
}
void QQuickWebPage::setContentsSize(const QSizeF& size)
{
if (size.isEmpty() || d->contentsSize == size)
return;
d->contentsSize = size;
d->updateSize();
d->setDrawingAreaSize(d->contentsSize.toSize());
}
const QSizeF& QQuickWebPage::contentsSize() const
{
return d->contentsSize;
}
void QQuickWebPage::setContentsScale(qreal scale)
{
ASSERT(scale > 0);
d->contentsScale = scale;
d->updateSize();
}
qreal QQuickWebPage::contentsScale() const
{
ASSERT(d->contentsScale > 0);
return d->contentsScale;
}
QTransform QQuickWebPage::transformFromItem() const
{
return transformToItem().inverted();
}
QTransform QQuickWebPage::transformToItem() const
{
QPointF pos = d->viewportItem->pageItemPos();
return QTransform(d->contentsScale, 0, 0, 0, d->contentsScale, 0, pos.x(), pos.y(), 1);
}
void QQuickWebPagePrivate::updateSize()
{
QSizeF scaledSize = contentsSize * contentsScale;
q->setSize(scaledSize);
viewportItem->updateContentsSize(scaledSize);
}
QQuickWebPagePrivate::~QQuickWebPagePrivate()
{
}
#include "moc_qquickwebpage_p.cpp"
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