5635823e17
As in the past, to avoid rewriting various autotests that contain line-number information, an extra blank line has been inserted at the end of the license text to ensure that this commit does not change the total number of lines in the license header. Change-Id: I311e001373776812699d6efc045b5f742890c689 Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
305 lines
8.6 KiB
C++
305 lines
8.6 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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**
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** This file is part of the test suite of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "webview.h"
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#include "webview_p.h"
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#include <QtGui>
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static const int MotionEndWaitTime = 2000;
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static const int TileSideLength = 128;
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WebViewPrivate::WebViewPrivate(WebView *w)
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: q(w)
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, cache(0)
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{
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web = new QGraphicsWebView;
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web->setParentItem(q->viewport());
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web->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
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web->page()->mainFrame()->setScrollBarPolicy(
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Qt::Horizontal, Qt::ScrollBarAlwaysOff);
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web->page()->mainFrame()->setScrollBarPolicy(
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Qt::Vertical, Qt::ScrollBarAlwaysOff);
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web->setZValue(3);
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// cache = new WebViewCache(web);
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// web->setGraphicsEffect(cache);
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adjustSize();
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}
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void WebViewPrivate::adjustSize()
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{
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QSizeF contentSize = web->page()->mainFrame()->contentsSize();
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QPointF pos = web->pos();
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qreal w = qMax(contentSize.width(), q->viewport()->boundingRect().width());
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qreal h = qMax(contentSize.height(), q->viewport()->boundingRect().height());
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if (web->boundingRect().size() != QSizeF(w, h)) {
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//qDebug() << "WebView: adjustSize:" << QSizeF(w, h);
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web->resize(w, h);
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web->setPos(pos);
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if (w > q->viewport()->boundingRect().width())
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q->horizontalScrollBar()->setSliderSize(w);
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else
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q->horizontalScrollBar()->setSliderSize(0.0);
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if (h > q->viewport()->boundingRect().height())
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q->verticalScrollBar()->setSliderSize(h);
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else
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q->verticalScrollBar()->setSliderSize(0.0);
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}
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}
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void WebViewPrivate::_q_loadStarted()
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{
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qDebug() << "WebView: load started";
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adjustSize();
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}
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void WebViewPrivate::_q_loadProgress(int progress)
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{
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Q_UNUSED(progress)
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// qDebug() << "WebView: load progress" << progress;
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adjustSize();
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}
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void WebViewPrivate::_q_loadFinished(bool ok)
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{
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qDebug() << "WebView: load finished" << (ok ? "ok" : "not ok");
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adjustSize();
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}
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void WebViewPrivate::_q_viewportChanged(QGraphicsWidget* viewport)
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{
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web->setParentItem(viewport);
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viewport->setFlag(QGraphicsItem::ItemClipsChildrenToShape,
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true);
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adjustSize();
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}
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void WebViewPrivate::_q_motionEnded()
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{
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motionTimer.stop();
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qDebug() << "Motion ended";
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q->prepareGeometryChange();
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}
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WebViewCache::WebViewCache(QGraphicsWebView *webView)
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: m_webView(webView)
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{
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}
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WebViewCache::~WebViewCache()
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{
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}
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void WebViewCache::draw(QPainter * painter, QGraphicsEffectSource * source)
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{
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const QGraphicsItem *item = source->graphicsItem();
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QSizeF itemSize = item->boundingRect().size();
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if (!qFuzzyCompare(itemSize.width(), m_itemSize.width()) ||
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!qFuzzyCompare(itemSize.height(), m_itemSize.height())) {
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qDebug() << "Refresh tile cache, for new size" << itemSize;
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for (int i = 0; i < m_tilePixmaps.size(); i++) {
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QPixmapCache::remove(m_tilePixmaps[i]);
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}
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m_tilePixmaps.clear();
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m_tileRects.clear();
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int itemWidth = itemSize.width() + 0.5;
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int itemHeight = itemSize.height() + 0.5;
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int tilesX = itemWidth / TileSideLength;
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int tilesY = itemHeight / TileSideLength;
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if ((itemWidth % TileSideLength) != 0) {
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++tilesX;
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}
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if ((itemHeight % TileSideLength) != 0) {
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++tilesY;
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}
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int tilesCount = tilesX * tilesY;
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m_tilePixmaps.resize(tilesCount);
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m_tileRects.resize(tilesCount);
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for (int i = 0; i < tilesX; i++) {
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for (int j = 0; j < tilesY; j++) {
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int x = i * TileSideLength;
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int y = j * TileSideLength;
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m_tileRects[i + j * tilesX]
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= QRectF(x, y, TileSideLength, TileSideLength);
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}
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}
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m_itemSize = itemSize;
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}
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const QGraphicsItem *parentItem = item->parentItem();
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QPointF itemPos = item->pos();
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QRectF parentRect = parentItem->boundingRect();
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for (int i = 0; i < m_tileRects.size(); i++) {
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QRectF tileRect = m_tileRects[i].translated(itemPos);
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if (!tileRect.intersects(parentRect) && !tileRect.contains(parentRect)) {
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continue;
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}
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QPixmap tilePixmap;
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if (!QPixmapCache::find(m_tilePixmaps[i], &tilePixmap)) {
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tilePixmap = QPixmap(TileSideLength, TileSideLength);
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QWebFrame *webFrame = m_webView->page()->mainFrame();
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QPainter tilePainter(&tilePixmap);
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tilePainter.translate(-m_tileRects[i].left(), -m_tileRects[i].top());
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webFrame->render(&tilePainter, m_tileRects[i].toRect());
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tilePainter.end();
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m_tilePixmaps[i] = QPixmapCache::insert(tilePixmap);
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}
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tileRect = tileRect.translated(-itemPos);
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painter->drawPixmap(tileRect.topLeft(), tilePixmap);
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}
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}
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WebView::WebView(QGraphicsWidget *parent)
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: AbstractScrollArea(parent)
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, d(new WebViewPrivate(this))
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{
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setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
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setContentsMargins(0, 0, 0, 0);
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connect(d->web->page(), SIGNAL(loadStarted()),
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this, SLOT(_q_loadStarted()));
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connect(d->web->page(), SIGNAL(loadProgress(int)),
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this, SLOT(_q_loadProgress(int)));
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connect(d->web->page(), SIGNAL(loadFinished(bool)),
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this, SLOT(_q_loadFinished(bool)));
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connect(this, SIGNAL(viewportChanged(QGraphicsWidget*)),
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this, SLOT(_q_viewportChanged(QGraphicsWidget*)));
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connect(&d->motionTimer, SIGNAL(timeout()),
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this, SLOT(_q_motionEnded()));
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}
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WebView::~WebView()
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{
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d->web->setGraphicsEffect(0);
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delete d->cache;
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}
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void WebView::setUrl(const QUrl& url)
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{
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d->adjustSize();
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d->web->setUrl(url);
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}
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void WebView::scrollContentsBy(qreal dx, qreal dy)
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{
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if (qFuzzyCompare((float)dy, 0.0f) && qFuzzyCompare((float)dx, 0.0f))
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return;
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if (!d->motionTimer.isActive()) {
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d->motionTimer.start(MotionEndWaitTime);
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}
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QSizeF contentSize = d->web->page()->mainFrame()->contentsSize();
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QRectF viewportRect = viewport()->boundingRect();
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QPointF pos = d->web->pos();
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qreal w = qMax(contentSize.width(), viewportRect.width());
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qreal h = qMax(contentSize.height(), viewportRect.height());
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qreal minx = qMin(0.0f, (float) -(w - viewportRect.width()));
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qreal miny = qMin(0.0f, (float) -(h - viewportRect.height()));
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qreal x = d->web->pos().x() - dx;
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if (x < minx)
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x = minx;
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else if (x > 0)
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x = 0.0;
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qreal y = d->web->pos().y() - dy;
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if (y < miny)
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y = miny;
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else if (y > 0)
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y = 0.0;
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d->web->setPos(x, y);
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}
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QSizeF WebView::sizeHint(Qt::SizeHint which, const QSizeF & constraint) const
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{
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if (which == Qt::PreferredSize) {
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QSizeF contentSize = d->web->page()->mainFrame()->contentsSize();
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return contentSize;
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}
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return AbstractScrollArea::sizeHint(which, constraint);
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}
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void WebView::resizeEvent(QGraphicsSceneResizeEvent *event)
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{
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AbstractScrollArea::resizeEvent(event);
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d->adjustSize();
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}
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#include "moc_webview.cpp"
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