author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 11 May 2010 17:13:44 +0300 | |
branch | RCL_3 |
changeset 70 | 8bfb9186a8b8 |
parent 67 | 4917f9bf7995 |
child 84 | 800203832575 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of the License "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* |
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*/ |
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// INCLUDE FILES |
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#include <../bidi.h> |
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#include "WebPagePinchZoomHandler.h" |
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#include "WebView.h" |
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#include "PluginSkin.h" |
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const int KBitmapUpdateTimeout = 100*1000; |
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const int KPinchExitWaitTimeout = 300*1000; |
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const int KPinchZoomStepSizeSmall = 3; |
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const int KPinchZoomStepSizeMedium = 4; |
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const int KPinchZoomStepSizeLarge = 5; |
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const int KMinPinchFactor = 1; |
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int pinchBitmapUpdateTimerCb( void* ptr ); |
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int pinchExitWaitTimerCb( void* ptr ); |
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// ============================ MEMBER FUNCTIONS =============================== |
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// ----------------------------------------------------------------------------- |
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// WebPagePinchZoomHandler::NewL |
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// The two-phase Symbian constructor |
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// ----------------------------------------------------------------------------- |
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// |
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WebPagePinchZoomHandler* WebPagePinchZoomHandler::NewL(WebView* webView) |
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{ |
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WebPagePinchZoomHandler* self = new (ELeave) WebPagePinchZoomHandler(webView); |
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CleanupStack::PushL(self); |
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self->constructL(); |
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CleanupStack::Pop(); //self |
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return self; |
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} |
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// ----------------------------------------------------------------------------- |
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// WebPagePinchZoomHandler::WebPointerEventHandler |
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// C++ default constructor |
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// |
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// ----------------------------------------------------------------------------- |
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// |
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WebPagePinchZoomHandler::WebPagePinchZoomHandler(WebView* webView) |
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: m_webView(webView) |
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, m_zoomOutBaseLevel(0) |
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, m_pinchCenterSet(false) |
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, m_zoomStepSize(0) |
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, m_pinchActive(false) |
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, m_pinchCenter(0,0) |
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, m_isPluginsVisible(true) |
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{ |
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} |
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// ----------------------------------------------------------------------------- |
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// WebPagePinchZoomHandler::constructL |
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// The constructor that can contain code that might leave. |
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// ----------------------------------------------------------------------------- |
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// |
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void WebPagePinchZoomHandler::constructL() |
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{ |
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m_bitmapUpdateTimer = CPeriodic::NewL(CActive::EPriorityHigh); |
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m_pinchExitWaitTimer = CPeriodic::NewL(CActive::EPriorityHigh); |
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} |
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// ----------------------------------------------------------------------------- |
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// WebPagePinchZoomHandler::~WebPagePinchZoomHandler |
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// ----------------------------------------------------------------------------- |
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WebPagePinchZoomHandler::~WebPagePinchZoomHandler() |
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{ |
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if (m_bitmapUpdateTimer->IsActive()) |
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m_bitmapUpdateTimer->Cancel(); |
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delete m_bitmapUpdateTimer; |
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if (m_pinchExitWaitTimer->IsActive()) |
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m_pinchExitWaitTimer->Cancel(); |
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delete m_pinchExitWaitTimer; |
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} |
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// ----------------------------------------------------------------------------- |
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// getPinchZoomStepSize |
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// ----------------------------------------------------------------------------- |
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TInt WebPagePinchZoomHandler::getPinchZoomStepSize() |
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{ |
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TInt zoomStepSize = 0; |
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TInt absPinchFactor = Abs (m_pinchFactor); |
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if (absPinchFactor == 0) |
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return zoomStepSize; |
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106 |
|
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if ( absPinchFactor >= KMinPinchFactor && absPinchFactor <= 10 ) { |
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zoomStepSize = KPinchZoomStepSizeSmall; |
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} |
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else if ( absPinchFactor > 10 && absPinchFactor <= 20 ) { |
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zoomStepSize = KPinchZoomStepSizeMedium; |
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} |
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else if ( absPinchFactor > 20 ) { |
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zoomStepSize = KPinchZoomStepSizeLarge; |
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} |
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116 |
|
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return (m_pinchFactor/absPinchFactor) * zoomStepSize; |
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} |
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119 |
|
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120 |
// ----------------------------------------------------------------------------- |
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// handlePinchGestureEventL |
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// ----------------------------------------------------------------------------- |
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void WebPagePinchZoomHandler::handlePinchGestureEventL(const TStmGestureEvent& aGesture) |
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124 |
{ |
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if(aGesture.GestureState() == EGestureEnter) { |
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m_pinchActive = true; |
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handlePinchGestureL(aGesture); |
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} |
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129 |
else { |
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m_pinchActive = false; |
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handlePinchGestureExitL(aGesture); |
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} |
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133 |
|
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134 |
} |
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135 |
|
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136 |
// ----------------------------------------------------------------------------- |
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137 |
// handlePinchGestureL |
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138 |
// ----------------------------------------------------------------------------- |
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139 |
void WebPagePinchZoomHandler::handlePinchGestureL(const TStmGestureEvent& aGesture) |
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140 |
{ |
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141 |
|
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m_pinchFactor = aGesture.Details(); |
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TInt zoomValue = 0; |
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TInt currentZoom = m_webView->zoomLevel(); |
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TInt zoomStepSize = getPinchZoomStepSize(); |
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146 |
|
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if (zoomStepSize == 0) |
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148 |
return; |
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149 |
|
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zoomValue = currentZoom + zoomStepSize; |
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if (m_zoomStepSize > 0 && zoomStepSize < 0) m_zoomOutBaseLevel = currentZoom / 2; |
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152 |
|
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m_zoomStepSize = zoomStepSize; |
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154 |
|
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if(zoomValue >= m_webView->minZoomLevel() && zoomValue <= m_webView->maxZoomLevel()) { |
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156 |
if (!m_pinchCenterSet) { |
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TPoint pinchCenter = aGesture.PinchEndPos() + aGesture.CurrentPos(); |
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m_pinchCenter.iX = pinchCenter.iX / 2; |
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m_pinchCenter.iY = pinchCenter.iY / 2; |
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m_pinchCenterSet = true; |
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if (zoomStepSize < 0) m_zoomOutBaseLevel = currentZoom / 2; |
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162 |
} |
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163 |
if (!(zoomStepSize < 0 && zoomValue < m_zoomOutBaseLevel)) |
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setZoomLevelL(zoomValue); |
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165 |
|
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166 |
} |
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167 |
} |
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168 |
|
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169 |
// ----------------------------------------------------------------------------- |
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170 |
// handlePinchGestureExitL |
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171 |
// ----------------------------------------------------------------------------- |
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172 |
void WebPagePinchZoomHandler::handlePinchGestureExitL(const TStmGestureEvent& aGesture) |
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173 |
{ |
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174 |
m_zoomOutBaseLevel = 0; |
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m_zoomStepSize = 0; |
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176 |
m_pinchCenterSet = false; |
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if (!m_bitmapUpdateTimer->IsActive()) |
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178 |
m_bitmapUpdateTimer->Start( KBitmapUpdateTimeout,KBitmapUpdateTimeout,TCallBack(&pinchBitmapUpdateTimerCb,this)); |
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179 |
|
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180 |
if (!m_pinchExitWaitTimer->IsActive()) |
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181 |
m_pinchExitWaitTimer->Start( KPinchExitWaitTimeout,0,TCallBack(&pinchExitWaitTimerCb,this)); |
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182 |
|
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183 |
} |
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184 |
|
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185 |
// ----------------------------------------------------------------------------- |
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186 |
// setZoomLevelL |
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187 |
// ----------------------------------------------------------------------------- |
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188 |
void WebPagePinchZoomHandler::setZoomLevelL(int zoomLevel) |
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189 |
{ |
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190 |
if (m_isPluginsVisible) { |
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191 |
m_webView->mainFrame()->makeVisiblePlugins(false); |
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m_isPluginsVisible = false; |
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193 |
} |
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m_webView->setPinchBitmapZoomLevelL(zoomLevel); |
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195 |
} |
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196 |
|
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197 |
// ----------------------------------------------------------------------------- |
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198 |
// isPinchActive |
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199 |
// ----------------------------------------------------------------------------- |
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200 |
TBool WebPagePinchZoomHandler::isPinchActive() |
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201 |
{ |
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202 |
bool pinchActive = false; |
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203 |
if (m_pinchActive == true || m_pinchExitWaitTimer->IsActive()) |
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pinchActive = true; |
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205 |
|
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206 |
return pinchActive; |
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207 |
|
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208 |
} |
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// ----------------------------------------------------------------------------- |
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// updateBitmap |
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// ----------------------------------------------------------------------------- |
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void WebPagePinchZoomHandler::updateBitmap(void) |
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{ |
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m_isPluginsVisible = true; |
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m_bitmapUpdateTimer->Cancel(); |
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m_webView->restoreZoomLevel(m_webView->scalingFactor()); |
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//update the plugin rect after pinch zoom exit |
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m_webView->mainFrame()->notifyPluginsOfPositionChange(); |
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m_webView->startCheckerBoardDestroyTimer(); |
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} |
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// ----------------------------------------------------------------------------- |
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// handlepinchExitWaitTimer |
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// ----------------------------------------------------------------------------- |
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void WebPagePinchZoomHandler::handlepinchExitWaitTimer(void) |
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{ |
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m_pinchExitWaitTimer->Cancel(); |
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} |
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// ----------------------------------------------------------------------------- |
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// pinchBitmapUpdateTimerCb |
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// ----------------------------------------------------------------------------- |
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int pinchBitmapUpdateTimerCb(void* ptr) |
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{ |
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((WebPagePinchZoomHandler*)ptr)->updateBitmap(); |
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return 0; |
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} |
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// ----------------------------------------------------------------------------- |
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// pinchExitWaitTimerCb |
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// ----------------------------------------------------------------------------- |
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int pinchExitWaitTimerCb(void* ptr) |
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{ |
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((WebPagePinchZoomHandler*)ptr)->handlepinchExitWaitTimer(); |
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return 0; |
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} |
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// End of File |
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