--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ginebra2/ScrollZoomWidget.cpp	Tue May 04 12:39:35 2010 +0300
@@ -0,0 +1,196 @@
+/*
+* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+*
+*/
+
+
+#include <QtGui>
+#include <QTimeLine>
+
+#include "ScrollZoomWidget.h"
+#include "GWebContentView.h"
+#include "ChromeSnippet.h"
+
+#include <QDebug>
+
+namespace GVA {
+
+  ScrollZoomWidget::ScrollZoomWidget(ChromeSnippet* snippet, QGraphicsItem* parent)
+    : NativeChromeItem(snippet, parent),
+      m_zoomIn(true),
+      m_scrolling(false),
+      m_xScale(1),
+      m_yScale(1),
+      m_deltaX(0),
+      m_deltaY(0),
+      m_timeLine(0),
+      m_webView(0),
+      m_effect(0)
+  {
+    setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemSendsGeometryChanges);
+    setOpacity(0.50);
+    // m_effect = new QGraphicsDropShadowEffect();
+    //static_cast<QGraphicsDropShadowEffect*>(m_effect)->setOffset(4.0,4.0);
+    //static_cast<QGraphicsDropShadowEffect*>(m_effect)->setBlurRadius(2.0);
+    //setGraphicsEffect(m_effect);
+    m_buttonImage = QImage(":/chrome/demochrome/Scroll.png");
+  }
+
+  ScrollZoomWidget:: ~ScrollZoomWidget()
+  {
+    delete m_timeLine;
+  }
+
+ 
+  QVariant ScrollZoomWidget::itemChange(GraphicsItemChange change, const QVariant & value)
+  {
+    qreal deltaX = 0;
+    qreal deltaY = 0;
+    qreal scrollY = 0;
+
+    if(m_webView && (change == ItemPositionChange)) {
+      QPointF newPos = value.toPointF();
+      if((m_centerX != 0) && (m_centerY != 0)){
+	deltaX = newPos.x() - m_centerX;
+	deltaY = newPos.y() - m_centerY;
+      }
+      if(m_scrolling)
+	scrollY = deltaY*m_yScale/2;
+      if(m_webView->scrollY() == 0){
+	qreal slide = m_snippet->chrome()->slideView(scrollY);	  
+        scrollY-=slide;
+      }
+      m_webView->scrollBy(-deltaX*m_yScale/2, -scrollY);
+    }
+    return QGraphicsItem::itemChange(change, value);
+  }
+ 
+  void ScrollZoomWidget::onLoadFinished(bool ok)
+  {
+    if(m_webView->contentWidth() > parentWidget()->size().width())
+      m_xScale = m_webView->contentWidth()/parentWidget()->size().width();
+    if(m_webView->contentHeight() > parentWidget()->size().height())
+      m_yScale = m_webView->contentHeight()/parentWidget()->size().height();
+  }
+
+   void ScrollZoomWidget::paint(QPainter* painter, const QStyleOptionGraphicsItem* opt, QWidget* widget)
+  {
+    painter->save();
+    if(m_scrolling) {
+      setOpacity(0.0);
+      //painter->setBrush(Qt::transparent);
+      //painter->scale(2.0, 2.0);
+      //painter->setPen(QPen(Qt::transparent, 4.0));
+      //painter->drawEllipse(QRectF(0,0, geometry().width(), geometry().height()));
+    }
+    else {
+      setOpacity(0.60);
+      //painter->setBrush(Qt::blue);
+      //painter->setPen(QPen(Qt::blue, 4.0));     
+      //painter->drawEllipse(QRectF(0,0, geometry().width(), geometry().height()));
+    }
+    painter->drawImage(QPointF(0,0),m_buttonImage);
+    painter->restore();
+  }
+
+  void ScrollZoomWidget::mousePressEvent(QGraphicsSceneMouseEvent * ev)
+  {
+
+    if(!m_webView){
+      m_webView  = static_cast<GWebContentView*> (m_snippet->chrome()->getView("WebView"));
+      if(m_webView) 
+	connect(m_webView, SIGNAL(loadFinished(bool)), this, SLOT(onLoadFinished(bool)));
+      else
+	return;
+    }
+    m_centerX = pos().x();
+    m_centerY = pos().y();
+    onLoadFinished(true);
+    m_scrolling = true;
+    //zoom();
+    //scroll();
+    QGraphicsWidget::mouseReleaseEvent(ev);
+  }
+
+  void ScrollZoomWidget::mouseReleaseEvent(QGraphicsSceneMouseEvent * ev)
+  {
+    m_scrolling = false;
+    setPos(m_centerX, m_centerY);
+    setOpacity(0.6);
+    update();
+    //m_timeLine->stop();
+    QGraphicsWidget::mouseReleaseEvent(ev);
+  }
+
+  void ScrollZoomWidget::updateZoom(qreal delta){
+    if(!m_webView) {
+      m_webView  = static_cast<GWebContentView*> (m_snippet->chrome()->getView("WebView"));
+      if(m_webView) 
+	connect(m_webView, SIGNAL(loadFinished(bool)), this, SLOT(onLoadFinished(bool)));
+    }
+    if(!m_webView)
+      return;
+    if(m_zoomIn)
+      m_webView->zoomBy(0.1);
+    else
+      m_webView->zoomBy(-0.1);
+  }
+
+
+  void ScrollZoomWidget::updateScroll(qreal delta){
+    if(!m_webView) {
+      m_webView  = static_cast<GWebContentView*> (m_snippet->chrome()->getView("WebView"));
+      if(m_webView) 
+	connect(m_webView, SIGNAL(loadFinished(bool)), this, SLOT(onLoadFinished(bool)));
+    }
+    if(!m_webView)
+      return;
+    m_webView->scrollBy(m_deltaX*2,m_deltaY*2);
+  }
+
+ 
+  void ScrollZoomWidget::zoom()
+  {
+    m_zoomIn = !m_zoomIn;
+    if(!m_timeLine) {
+      m_timeLine = new QTimeLine();
+      connect(m_timeLine, SIGNAL(valueChanged(qreal)),
+	      this, SLOT(updateZoom(qreal)));
+    }
+    else {
+      m_timeLine->stop();
+    }
+    m_timeLine->start();
+  }
+ 
+
+  void ScrollZoomWidget::scroll()
+  { 
+    m_zoomIn = !m_zoomIn;
+    if(!m_timeLine) {
+      m_timeLine = new QTimeLine();
+      m_timeLine->setLoopCount(0);
+      connect(m_timeLine, SIGNAL(valueChanged(qreal)),
+	      this, SLOT(updateScroll(qreal)));
+    }
+    else {
+      m_timeLine->stop();
+    }
+    m_timeLine->start();
+  }
+
+} // end of namespace GVA
+
+