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Plasma

webview.cpp

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00001 /*
00002  *   Copyright 2006-2007 Aaron Seigo <aseigo@kde.org>
00003  *
00004  *   This program is free software; you can redistribute it and/or modify
00005  *   it under the terms of the GNU Library General Public License as
00006  *   published by the Free Software Foundation; either version 2, or
00007  *   (at your option) any later version.
00008  *
00009  *   This program is distributed in the hope that it will be useful,
00010  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  *   GNU General Public License for more details
00013  *
00014  *   You should have received a copy of the GNU Library General Public
00015  *   License along with this program; if not, write to the
00016  *   Free Software Foundation, Inc.,
00017  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
00018  */
00019 
00020 #include <QtGui/QGraphicsSceneContextMenuEvent>
00021 #include <QtGui/QGraphicsSceneDragDropEvent>
00022 #include <QtGui/QGraphicsSceneMouseEvent>
00023 #include <QtGui/QGraphicsSceneWheelEvent>
00024 #include <QtGui/QKeyEvent>
00025 #include <QtGui/QStyleOptionGraphicsItem>
00026 #include <QtWebKit/QWebFrame>
00027 #include <QtWebKit/QWebPage>
00028 
00029 #include <kdebug.h>
00030 
00031 #include "plasma/widgets/webview.h"
00032 
00033 namespace Plasma
00034 {
00035 
00036 class WebViewPrivate
00037 {
00038 public:
00039     WebViewPrivate(WebView *parent)
00040         : q(parent)
00041     {
00042     }
00043 
00044     void loadingFinished(bool success);
00045     void updateRequested(const QRect &dirtyRect);
00046     void scrollRequested(int dx, int dy, const QRect &scrollRect);
00047 
00048     WebView *q;
00049     QWebPage *page;
00050     bool loaded;
00051 };
00052 
00053 WebView::WebView(QGraphicsItem *parent)
00054     : QGraphicsWidget(parent),
00055       d(new WebViewPrivate(this))
00056 {
00057     d->page = 0;
00058     d->loaded = false;
00059     setPage(new QWebPage(this));
00060     setAcceptsHoverEvents(true);
00061     setFlags(QGraphicsItem::ItemIsFocusable);
00062 }
00063 
00064 WebView::~WebView()
00065 {
00066    delete d;
00067 }
00068 
00069 void WebView::setUrl(const KUrl &url)
00070 {
00071     d->loaded = false;
00072     if (d->page) {
00073         d->page->mainFrame()->load(url);
00074     }
00075 }
00076 
00077 void WebView::setHtml(const QByteArray &html, const KUrl &baseUrl)
00078 {
00079     d->loaded = false;
00080     if (d->page) {
00081         d->page->mainFrame()->setContent(html, QString(), baseUrl);
00082     }
00083 }
00084 
00085 void WebView::setHtml(const QString &html, const KUrl &baseUrl)
00086 {
00087     d->loaded = false;
00088     if (d->page) {
00089         d->page->mainFrame()->setHtml(html, baseUrl);
00090     }
00091 }
00092 
00093 QRectF WebView::geometry() const
00094 {
00095     if (d->loaded && d->page) {
00096         return d->page->mainFrame()->geometry();
00097     }
00098 
00099     return QGraphicsWidget::geometry();
00100 }
00101 
00102 void WebView::setPage(QWebPage *page)
00103 {
00104     if (page == d->page) {
00105         return;
00106     }
00107 
00108     if (d->page) {
00109         if (d->page->parent() == this) {
00110             delete d->page;
00111         } else {
00112             disconnect(d->page, 0, this, 0);
00113         }
00114     }
00115 
00116     d->page = page;
00117 
00118     if (d->page) {
00119         connect(d->page, SIGNAL(loadProgress(int)),
00120                 this, SIGNAL(loadProgress(int)));
00121         connect(d->page, SIGNAL(loadFinished(bool)),
00122                 this, SLOT(loadingFinished(bool)));
00123         connect(d->page, SIGNAL(repaintRequested(const QRect&)),
00124                 this, SLOT(updateRequested(const QRect&)));
00125         connect(d->page, SIGNAL(scrollRequested(int, int, const QRect &)),
00126                 this, SLOT(scrollRequested(int, int, const QRect &)));
00127     }
00128 }
00129 
00130 QWebPage *WebView::page() const
00131 {
00132     return d->page;
00133 }
00134 
00135 QWebFrame *WebView::mainFrame() const
00136 {
00137     return d->page ? d->page->mainFrame() : 0;
00138 }
00139 
00140 void WebView::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
00141 {
00142     Q_UNUSED(widget)
00143 
00144     if (d->loaded && d->page) {
00145         //kDebug() << "painting page";
00146         d->page->mainFrame()->render(painter, option->rect);
00147     }
00148 }
00149 
00150 void WebView::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
00151 {
00152     if (!d->page) {
00153         QGraphicsWidget::mouseMoveEvent(event);
00154         return;
00155     }
00156 
00157     QMouseEvent me(QEvent::MouseMove, event->pos().toPoint(), event->button(),
00158                    event->buttons(), event->modifiers());
00159     d->page->event(&me);
00160     if (me.isAccepted()) {
00161         event->accept();
00162     }
00163 }
00164 
00165 void WebView::hoverMoveEvent(QGraphicsSceneHoverEvent *event)
00166 {
00167     if (!d->page) {
00168         QGraphicsWidget::hoverMoveEvent(event);
00169         return;
00170     }
00171 
00172     QMouseEvent me(QEvent::MouseMove, event->pos().toPoint(), Qt::NoButton, Qt::NoButton, Qt::NoModifier);
00173     d->page->event(&me);
00174     if (me.isAccepted()) {
00175         event->accept();
00176     }
00177 }
00178 
00179 void WebView::mousePressEvent(QGraphicsSceneMouseEvent *event)
00180 {
00181     if (!d->page) {
00182         QGraphicsWidget::mousePressEvent(event);
00183         return;
00184     }
00185 
00186     setFocus();
00187 
00188     QMouseEvent me(QEvent::MouseButtonPress, event->pos().toPoint(), event->button(),
00189                    event->buttons(), event->modifiers());
00190     d->page->event(&me);
00191     if (me.isAccepted()) {
00192         event->accept();
00193     }
00194 }
00195 
00196 void WebView::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
00197 {
00198     if (!d->page) {
00199         QGraphicsWidget::mouseDoubleClickEvent(event);
00200         return;
00201     }
00202 
00203     QMouseEvent me(QEvent::MouseButtonDblClick, event->pos().toPoint(), event->button(),
00204                    event->buttons(), event->modifiers());
00205     d->page->event(&me);
00206     if (me.isAccepted()) {
00207         event->accept();
00208     }
00209 }
00210 
00211 void WebView::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
00212 {
00213     if (!d->page) {
00214         QGraphicsWidget::mouseReleaseEvent(event);
00215         return;
00216     }
00217 
00218     QMouseEvent me(QEvent::MouseButtonRelease, event->pos().toPoint(), event->button(),
00219                    event->buttons(), event->modifiers());
00220     d->page->event(&me);
00221     if (me.isAccepted()) {
00222         event->accept();
00223     }
00224 }
00225 
00226 void WebView::contextMenuEvent(QGraphicsSceneContextMenuEvent *event)
00227 {
00228     if (!d->page) {
00229         QGraphicsWidget::contextMenuEvent(event);
00230         return;
00231     }
00232 
00233     QContextMenuEvent ce(static_cast<QContextMenuEvent::Reason>(event->reason()),
00234                          event->pos().toPoint(), event->screenPos());
00235     d->page->event(&ce);
00236     if (ce.isAccepted()) {
00237         event->accept();
00238     }
00239 }
00240 
00241 void WebView::wheelEvent(QGraphicsSceneWheelEvent *event)
00242 {
00243     if (!d->page) {
00244         QGraphicsWidget::wheelEvent(event);
00245         return;
00246     }
00247 
00248     QWheelEvent we(event->pos().toPoint(), event->delta(), event->buttons(),
00249                    event->modifiers(), event->orientation());
00250 
00251     d->page->event(&we);
00252 
00253     if (we.isAccepted()) {
00254         event->accept();
00255     } else {
00256         QGraphicsWidget::wheelEvent(event);
00257     }
00258 }
00259 
00260 void WebView::keyPressEvent(QKeyEvent * event)
00261 {
00262     if (!d->page) {
00263         QGraphicsWidget::keyPressEvent(event);
00264         return;
00265     }
00266 
00267     d->page->event(event);
00268 kWarning()<<event;
00269     if (!event->isAccepted()) {
00270         QGraphicsWidget::keyPressEvent(event);
00271     }
00272 }
00273 
00274 void WebView::keyReleaseEvent(QKeyEvent * event)
00275 {
00276     if (!d->page) {
00277         QGraphicsWidget::keyReleaseEvent(event);
00278         return;
00279     }
00280 
00281     d->page->event(event);
00282 
00283     if (!event->isAccepted()) {
00284         QGraphicsWidget::keyPressEvent(event);
00285     }
00286 }
00287 
00288 void WebView::focusInEvent(QFocusEvent * event)
00289 {
00290     if (d->page) {
00291         d->page->event(event);
00292     }
00293 
00294     QGraphicsWidget::focusInEvent(event);
00295 }
00296 
00297 void WebView::focusOutEvent(QFocusEvent * event)
00298 {
00299     if (d->page) {
00300         d->page->event(event);
00301     }
00302 
00303     QGraphicsWidget::focusOutEvent(event);
00304 }
00305 
00306 void WebView::dragEnterEvent(QGraphicsSceneDragDropEvent * event)
00307 {
00308     if (!d->page) {
00309         QGraphicsWidget::dragEnterEvent(event);
00310         return;
00311     }
00312 
00313     QDragEnterEvent de(event->pos().toPoint(), event->possibleActions(), event->mimeData(),
00314                        event->buttons(), event->modifiers());
00315     d->page->event(&de);
00316 
00317     if (de.isAccepted()) {
00318         event->accept();
00319     }
00320 }
00321 
00322 void WebView::dragLeaveEvent(QGraphicsSceneDragDropEvent * event)
00323 {
00324     if (!d->page) {
00325         QGraphicsWidget::dragLeaveEvent(event);
00326         return;
00327     }
00328 
00329     QDragLeaveEvent de;
00330     d->page->event(&de);
00331 
00332     if (de.isAccepted()) {
00333         event->accept();
00334     }
00335 }
00336 
00337 void WebView::dragMoveEvent(QGraphicsSceneDragDropEvent * event)
00338 {
00339     if (!d->page) {
00340         QGraphicsWidget::dragMoveEvent(event);
00341         return;
00342     }
00343 
00344     // Ok, so the docs say "don't make a QDragMoveEvent yourself" but we're just
00345     // replicating it here, not really creating a new one. hopefully we get away with it ;)
00346     QDragMoveEvent de(event->pos().toPoint(), event->possibleActions(), event->mimeData(),
00347                       event->buttons(), event->modifiers());
00348     d->page->event(&de);
00349 
00350     if (de.isAccepted()) {
00351         event->accept();
00352     }
00353 }
00354 
00355 void WebView::dropEvent(QGraphicsSceneDragDropEvent * event)
00356 {
00357     if (!d->page) {
00358         QGraphicsWidget::dropEvent(event);
00359         return;
00360     }
00361 
00362     QDragMoveEvent de(event->pos().toPoint(), event->possibleActions(), event->mimeData(),
00363                       event->buttons(), event->modifiers());
00364     d->page->event(&de);
00365 
00366     if (de.isAccepted()) {
00367         event->accept();
00368     }
00369 }
00370 
00371 void WebView::setGeometry(const QRectF &geometry)
00372 {
00373     QGraphicsWidget::setGeometry(geometry);
00374     d->page->setViewportSize(geometry.size().toSize());
00375 }
00376 
00377 void WebViewPrivate::loadingFinished(bool success)
00378 {
00379     loaded = success;
00380     emit q->loadFinished(success);
00381     q->update();
00382 }
00383 
00384 void WebViewPrivate::updateRequested(const QRect &dirtyRect)
00385 {
00386     if (loaded && page) {
00387        q->update(QRectF(dirtyRect.topLeft().x(), dirtyRect.topLeft().y(),
00388                         dirtyRect.width(), dirtyRect.height()));
00389     }
00390 }
00391 
00392 void WebViewPrivate::scrollRequested(int dx, int dy, const QRect &scrollRect)
00393 {
00394     updateRequested(scrollRect);
00395 }
00396 
00397 } // namespace Plasma
00398 
00399 #include "webview.moc"
00400 

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