author | hgs |
Wed, 01 Sep 2010 13:56:21 -0400 | |
changeset 11 | 786160610b4d |
parent 3 | 0954f5dd2cd0 |
child 16 | 3c88a81ff781 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published by |
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* the Free Software Foundation, version 2.1 of the License. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with this program. If not, |
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* see "http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html/". |
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* |
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* Description: |
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* |
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*/ |
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/* Temporary implementation of WebTouchNavigation until gestures are ready. */ |
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#ifndef GWEBTOUCHNAVIGATION_H |
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#define GWEBTOUCHNAVIGATION_H |
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#include <QTime> |
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#include <QObject> |
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#include <QPoint> |
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#include <QEvent> |
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#include <QTimeLine> |
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#include <QWebFrame> |
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#include <QWebElement> |
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#include <QWebPage> |
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#include <QGraphicsWebView> |
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#include "wrtBrowserDefs.h" |
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class QWebFrame; |
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class QWebPage; |
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class QTimer; |
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class QWebElement; |
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class WebViewEventContext; |
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namespace GVA |
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{ |
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class GWebContentViewWidget; |
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class ChromeWidget; |
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class GWebTouchNavigation : public QObject |
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{ |
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Q_OBJECT |
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public: |
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enum Direction |
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{ |
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DOWN, // SOUTH |
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UP, // NORTH |
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RIGHT, // EAST |
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LEFT, // WEST |
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BOTTOMRIGHT, // SOUTHEAST |
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BOTTOMLEFT, // SOUTHWEST |
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TOPLEFT, // NORTHWEST |
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TOPRIGHT, // NORTHEAST |
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NONE, |
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}; |
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enum PanDirection { |
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HorizontalPan, |
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VerticalPan, |
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RandomPan |
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}; |
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class DragPoint |
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{ |
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public: |
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QPoint iPoint; |
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QTime iTime; |
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}; |
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GWebTouchNavigation(QWebPage* webPage, QGraphicsWebView* view); |
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virtual ~GWebTouchNavigation(); |
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void install(); |
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void uninstall(); |
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void setPage( QWebPage * page); |
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bool enabled() const { return m_enabled; } |
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void setEnabled(bool value) { m_enabled = value; } |
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void setWantSlideViewCalls(bool value) { m_wantSlideViewCalls = value; } |
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signals: |
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void longPressEvent(QPoint pos);// mouse long press signal |
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void focusElementChanged(wrtBrowserDefs::BrowserElementType &); |
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void pageScrollPositionZero(); |
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/// Sent when this object starts panning/scrolling the page. Can be useful for |
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/// cancelling things like long-press timers which otherwise wouldn't get |
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/// mouse-move events. |
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void startingPanGesture(int directionHint); |
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void mouseEvent(QEvent::Type type); |
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protected slots: |
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void scrollToEdge(); |
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void doubleClickTimerExpired(); |
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void onLongPressTimer(); |
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void pan(); |
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void kineticScroll(); |
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void BlockFocusChanged(QPoint pt); |
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void onLoadStarted(); |
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void onLoadFinished(bool ok); |
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void onContentsSizeChanged(const QSize &); |
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void enableDClick(bool aValue); |
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protected: |
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bool eventFilter(QObject *object, QEvent *event); |
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void mousePressEvent(const QPoint& pos); |
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void mouseMoveEvent(const QPoint& pos, const QPoint& diff); |
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void mouseReleaseEvent(const QPoint& pos); |
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void mouseDoubleClickEvent(const QPoint& pos); |
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void contextMenuEvent(); |
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QWebFrame* getNextScrollableFrame(const QPoint& pos); |
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void scrollFrame(const QPoint& diff); |
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void startScrollTimer(); |
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void updateFlickScrollDistance(); |
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bool isFlick() ; |
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QPoint speed() ; |
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QPoint currentPos(); |
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QPoint previousPos(); |
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qreal dragTime() const; |
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Direction findDirectionWithAngle(const QPoint& diff); |
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bool isNear(qreal aAngleUnderTest, qreal aMinAngle, qreal aMaxAngle); |
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qreal findAngle(const int& xDelta,const int& yDelta); |
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int roundOff(qreal num); |
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QRect findEnclosingBlock(QMouseEvent* ev); |
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QWebHitTestResult getHitTestResult(QMouseEvent* ev); |
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void calculateActualScrollDistance(); |
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void setNewScrollDistance(QPoint blockCanvasPoint, int thresholdCheckVal); |
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void handleMousePressEvent(QMouseEvent* ev); |
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void handleMouseReleaseEvent(QMouseEvent* ev); |
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void handleDoubleClickEvent(QMouseEvent* ev); |
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void cancelPressEvent(); |
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void cancelReleaseEvent(); |
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// Methods that can be overridden in subclasses. Mainly here so that |
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// we can create a subclass that can interact with GWebContentViewWidget |
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// and ChromeWidget, and still handle generic QWebViews. |
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virtual qreal slideView(qreal delta) { Q_UNUSED(delta) return 0; } |
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virtual qreal shrinkView(qreal delta) { Q_UNUSED(delta) return 0; } |
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virtual void setViewBlockElement(const QWebElement &el) { Q_UNUSED(el) } |
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virtual qreal viewInitialScale() { return 1; } |
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virtual void setViewZoomFactor(qreal zoom) { Q_UNUSED(zoom) } |
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private: |
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void highlightableElement(QMouseEvent* ev); |
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QWebElement getClosestAnchorElement(QMouseEvent* ev); |
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bool traverseNextNode(QWebElement parentNode,QWebElement& nextNode); |
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void handleHighlightChange(QMouseEvent* ev); |
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bool canDehighlight(QMouseEvent* ev); |
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void dehighlight(QMouseEvent* ev); |
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void emitFocusedElementChanged(); |
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void startLongPressTimer(); |
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void stopLongPressTimer(); |
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void stopScrolling(); |
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void startPanGesture(PanDirection); |
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void panBy(const QPointF& delta); |
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void scrollCurrentFrame (int dx, int dy); |
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void setCurrentFrameScrollPosition (QPoint& pos); |
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Qt::KeyboardModifier getEventModifier(const QPoint& pos); |
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protected: |
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QWebPage* m_webPage; |
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QGraphicsWebView* m_view; |
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QWebFrame* m_frame; |
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bool m_scrolled; |
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QPoint m_touchPosition; |
3 | 179 |
QPointF m_scrollDistance; |
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QPointF m_actualScrollDistance; |
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QPointF m_prevPoint; |
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QList<DragPoint> m_dragPoints; |
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Direction m_flickDirection; |
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QTime m_lastMoveEventTime; |
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QTimer* m_doubleClickTimer; |
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QMouseEvent *m_pressEvent; |
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QMouseEvent *m_releaseEvent; |
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QPoint m_focusedBlockPt; |
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QWebElement m_anchorElement; |
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QPoint m_higlightedPos; |
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bool m_ishighlighted; |
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int m_offset; |
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QTimer* m_longPressTimer;// long press timer |
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QPoint m_longPressPosition; |
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QPoint m_initialSpeed; |
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qreal m_finalzoomfactor; |
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QTimer* m_scrollTimer; |
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QPoint m_scrollDelta; |
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QTimer* m_kineticTimer; |
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QPointF m_kineticSpeed; |
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QTime m_actualTime; |
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int m_kineticScrollTime; |
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QPoint m_initialScrollPos; |
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bool m_isPanning; |
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QTime m_delayedPressMoment; |
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QPointF m_dragStartPos; |
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PanDirection m_panDirection; |
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QPointF m_panModeResidue; |
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bool m_enabled; |
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bool m_textSelected; // whether the text of an input field is selected manually |
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||
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bool m_isLoading; |
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int m_contentHeight; |
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// m_isContextEvent is set to true when a context menu event is received |
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// and then cleared when on mouse release events. Mouse release events |
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// are ignored when this flags is true to avoid activating links when |
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// the context menu is activated over them. |
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bool m_isContextEvent; |
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// Flag that governs whether calls to slideView should be made or not. |
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bool m_wantSlideViewCalls; |
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bool m_doubleClickEnabled; |
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}; |
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|
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} |
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|
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#endif |