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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 "qquickwebpage_p_p.h"
#include "qquickwebview_p.h"
#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);
// 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));
}
static float computeEffectiveOpacity(const QQuickItem* item)
{
if (!item)
return 1;
float opacity = item->opacity();
if (opacity < 0.01)
return 0;
return opacity * computeEffectiveOpacity(item->parentItem());
}
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);
}
void QQuickWebPagePrivate::paintToCurrentGLContext()
{
if (!q->isVisible())
return;
QTransform transform = q->itemTransform(0, 0);
transform.scale(contentsScale, contentsScale);
float opacity = computeEffectiveOpacity(q);
QRectF clipRect = viewportItem->mapRectToScene(viewportItem->boundingRect());
if (!clipRect.isValid())
return;
DrawingAreaProxy* drawingArea = webPageProxy->drawingArea();
if (!drawingArea)
return;
drawingArea->paintToCurrentGLContext(transform, opacity, clipRect);
}
struct PageProxyNode : public QSGRenderNode {
PageProxyNode(QQuickWebPagePrivate* page)
: m_pagePrivate(page)
{
}
virtual StateFlags changedStates()
{
return StateFlags(DepthState) | StencilState | ScissorState | ColorState | BlendState
| CullState | ViewportState;
}
virtual void render(const RenderState &)
{
if (m_pagePrivate)
m_pagePrivate->paintToCurrentGLContext();
}
~PageProxyNode()
{
if (m_pagePrivate)
m_pagePrivate->resetPaintNode();
}
QQuickWebPagePrivate* m_pagePrivate;
};
QSGNode* QQuickWebPage::updatePaintNode(QSGNode* oldNode, UpdatePaintNodeData*)
{
if (!(flags() & ItemHasContents)) {
if (oldNode)
delete oldNode;
return 0;
}
PageProxyNode* proxyNode = static_cast<PageProxyNode*>(oldNode);
if (!proxyNode) {
proxyNode = new PageProxyNode(d);
d->m_paintNode = proxyNode;
}
return proxyNode;
}
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);
}
void QQuickWebPagePrivate::resetPaintNode()
{
m_paintNode = 0;
DrawingAreaProxy* drawingArea = webPageProxy->drawingArea();
if (drawingArea && drawingArea->layerTreeHostProxy())
drawingArea->layerTreeHostProxy()->purgeGLResources();
}
QQuickWebPagePrivate::~QQuickWebPagePrivate()
{
if (m_paintNode)
static_cast<PageProxyNode*>(m_paintNode)->m_pagePrivate = 0;
}
#include "moc_qquickwebpage_p.cpp"
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