QtCollider/widgets/QcWebView.cpp

   1 /************************************************************************
   2 *
   3 * Copyright 2011-2012 Jakob Leben (jakob.leben@gmail.com)
   4 *
   5 * This file is part of SuperCollider Qt GUI.
   6 *
   7 * This program is free software: you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License as published by
   9 * the Free Software Foundation, either version 3 of the License, or
  10 * (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 *
  20 ************************************************************************/
  21
  22 #include "QcWebView.h"
  23 #include "../QcWidgetFactory.h"
  24 #include <QWebPage>
  25 #include <QWebFrame>
  26 #include <QAction>
  27 #include <QShortcut>
  28 #include <QKeyEvent>
  29 #include <QApplication>
  30 #include <QStyle>
  31 #include <QClipboard>
  32
  33 QC_DECLARE_QWIDGET_FACTORY(WebView);
  34
  35 namespace QtCollider {
  36
  37 WebView::WebView( QWidget *parent ) :
  38   QWebView( parent ),
  39   _interpretSelection(false)
  40 {
  41   QtCollider::WebPage *page = new WebPage(this);
  42   page->setDelegateReload(true);
  43   setPage( page );
  44
  45   // Set the style's standard palette to avoid system's palette incoherencies
  46   // get in the way of rendering web pages
  47   setPalette( style()->standardPalette() );
  48
  49   QShortcut *scutCopy = new QShortcut( QKeySequence::Copy, this );
  50   scutCopy->setContext( Qt::WidgetWithChildrenShortcut );
  51   connect( scutCopy, SIGNAL(activated()),
  52            pageAction(QWebPage::Copy), SLOT(trigger()) );
  53
  54   connect( this, SIGNAL(linkClicked(QUrl)), this, SLOT(onLinkClicked(QUrl)) );
  55   connect( page->action(QWebPage::Reload), SIGNAL(triggered(bool)),
  56            this, SLOT(onPageReload()) );
  57
  58   connect( this, SIGNAL(interpret(QString)),
  59            qApp, SLOT(interpret(QString)),
  60            Qt::QueuedConnection );
  61
  62   connect( page, SIGNAL(jsConsoleMsg(const QString&, int, const QString&)),
  63            this, SIGNAL(jsConsoleMsg(const QString&, int, const QString&)) );
  64 }
  65
  66 QString WebView::url() const
  67 {
  68   return QWebView::url().toString();
  69 }
  70
  71 void WebView::setUrl( const QString & str )
  72 {
  73   load( urlFromString(str) );
  74 }
  75
  76 QString WebView::html () const
  77 {
  78   return page()->mainFrame()->toHtml();
  79 }
  80
  81 void WebView::setHtml ( const QString &html, const QString &baseUrl )
  82 {
  83   QUrl url( baseUrl.isEmpty() ? QUrl() : urlFromString(baseUrl) );
  84   QWebView::setHtml( html, url );
  85 }
  86
  87 QString WebView::plainText () const
  88 {
  89   return page()->mainFrame()->toPlainText();
  90 }
  91
  92 QWebPage::LinkDelegationPolicy WebView::linkDelegationPolicy () const
  93 {
  94   return page()->linkDelegationPolicy();
  95 }
  96
  97 void WebView::setLinkDelegationPolicy ( QWebPage::LinkDelegationPolicy p )
  98 {
  99   page()->setLinkDelegationPolicy( p );
 100 }
 101
 102 bool WebView::delegateReload() const
 103 {
 104   WebPage *p = qobject_cast<QtCollider::WebPage*>(page());
 105   Q_ASSERT(p);
 106   return p->delegateReload();
 107 }
 108
 109 void WebView::setDelegateReload( bool flag )
 110 {
 111   WebPage *p = qobject_cast<QtCollider::WebPage*>(page());
 112   Q_ASSERT(p);
 113   p->setDelegateReload( flag );
 114 }
 115
 116 void WebView::setFontFamily( int generic, const QString & specific )
 117 {
 118   settings()->setFontFamily( (QWebSettings::FontFamily) generic, specific );
 119 }
 120
 121 void WebView::evaluateJavaScript ( const QString &script )
 122 {
 123   if( script.isEmpty() ) return;
 124   QWebFrame *frame = page()->currentFrame();
 125   if( frame ) frame->evaluateJavaScript( script );
 126 }
 127
 128 void WebView::findText( const QString &searchText, bool reversed )
 129 {
 130   QWebPage::FindFlags flags( QWebPage::FindWrapsAroundDocument );
 131   if( reversed ) flags |= QWebPage::FindBackward;
 132   QWebView::findText( searchText, flags );
 133 }
 134
 135 void WebView::onLinkClicked( const QUrl &url )
 136 {
 137   Q_EMIT( linkActivated( url.toString() ) );
 138 }
 139
 140 void WebView::onPageReload()
 141 {
 142   Q_EMIT( reloadTriggered( url() ) );
 143 }
 144
 145 void WebView::keyPressEvent( QKeyEvent *e )
 146 {
 147   if( _interpretSelection && e->modifiers() & (Qt::ControlModifier|Qt::ShiftModifier)
 148       && ( e->key() == Qt::Key_Return || e->key() == Qt::Key_Enter ) )
 149   {
 150     QString selection = selectedText();
 151     if( !selection.isEmpty() ) {
 152       Q_EMIT( interpret( selection ) );
 153       return;
 154     }
 155   }
 156
 157   QWebView::keyPressEvent( e );
 158 }
 159
 160
 161 void WebPage::triggerAction ( WebAction action, bool checked )
 162 {
 163   switch ( action ) {
 164     case QWebPage::Reload:
 165       if( _delegateReload ) return;
 166       break;
 167     case QWebPage::Copy:
 168       QApplication::clipboard()->setText( selectedText() );
 169       return;
 170     default: ;
 171   }
 172
 173   QWebPage::triggerAction( action, checked );
 174 }
 175
 176 void WebPage::javaScriptConsoleMessage ( const QString & msg, int line, const QString & src )
 177 {
 178   Q_EMIT( jsConsoleMsg(msg,line,src) );
 179 }
 180
 181 } // namespace QtCollider