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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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* This component and the accompanying materials are made available
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* under the terms of "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 <QGraphicsLinearLayout>
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#include <QParallelAnimationGroup>
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#include <QPropertyAnimation>
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#include <QGraphicsDropShadowEffect>
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#include <QGraphicsSceneResizeEvent>
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#include <QGesture>
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#include <QGraphicsScene>
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#include <HbInstantFeedback>
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#include <HbTouchArea>
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#include "hswidgethostvisual.h"
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#include "hswidgethost.h"
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#include "hsscene.h"
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#include "hsconfiguration.h"
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#include "hswidgettoucharea.h"
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/*!
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\class HsWidgetHostVisual
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\ingroup group_hsdomainmodel
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\brief Each widget is controlled by the home screen framework through a widget host.
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*/
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/*!
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Constructs a new widget host with given \a databaseId and
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\a parent item.
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*/
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HsWidgetHostVisual::HsWidgetHostVisual(QGraphicsItem *parent)
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: HbWidget(parent),mWidget(0)
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{
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setFlag(QGraphicsItem::ItemClipsChildrenToShape);
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setFlag(QGraphicsItem::ItemHasNoContents);
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setFlag(QGraphicsItem::ItemIsPanel);
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grabGesture(Qt::PanGesture);
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setupTouchArea();
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setupEffects();
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setMinimumSize(HSCONFIGURATION_GET(minimumWidgetSizeInPixels));
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setMaximumSize(HSCONFIGURATION_GET(maximumWidgetSizeInPixels));
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}
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/*!
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Destructor.
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*/
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HsWidgetHostVisual::~HsWidgetHostVisual()
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{
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}
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/*!
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Reimplemented from QGraphicsItem. Returns the shape of the
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this widget host. The shape is computed based on the contained
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widget.
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*/
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QPainterPath HsWidgetHostVisual::shape() const
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{
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QPainterPath path;
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if (mWidget) {
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QRectF visualRect = rect();
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path = mWidget->shape();
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QRectF widgetRect(path.boundingRect());
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if (widgetRect.width() > visualRect.width()
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|| widgetRect.height() > visualRect.height()) {
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QPainterPath newPath;
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newPath.addRect(visualRect);
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path = path.intersected(newPath);
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} else if ( widgetRect.isEmpty() ) {
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path.addRect(visualRect);
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}
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}
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return path;
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}
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void HsWidgetHostVisual::setWidget(QObject *widget)
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{
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mWidget = qobject_cast<QGraphicsWidget *>(widget);
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if (mWidget) {
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mWidget->installEventFilter(this);
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mWidget->setParentItem(this);
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setNewSize(mWidget->size());
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}
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}
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void HsWidgetHostVisual::setVisualModel(HsWidgetHost *model)
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{
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mVisualModel = model;
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}
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HsWidgetHost *HsWidgetHostVisual::visualModel() const
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{
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return mVisualModel;
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}
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/*!
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Starts the drag effect.
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*/
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void HsWidgetHostVisual::startDragEffect()
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{
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/* TODO: Uncomment after the Qt bug has been fixed.
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QGraphicsDropShadowEffect *effect =
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static_cast<QGraphicsDropShadowEffect *>(graphicsEffect());
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*/
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HbInstantFeedback::play(HbFeedback::ItemPick);
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setTransformOriginPoint(rect().center());
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QParallelAnimationGroup *animationGroup = new QParallelAnimationGroup();
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QPropertyAnimation *animation = new QPropertyAnimation(this, "scale");
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animation->setDuration(HSCONFIGURATION_GET(widgetDragEffectDuration));
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animation->setEndValue(1.1);
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animationGroup->addAnimation(animation);
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/* TODO: Uncomment after the Qt bug has been fixed.
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animation = new QPropertyAnimation(effect, "offset");
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animation->setDuration(200);
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animation->setEndValue(QPointF(8 ,8));
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animationGroup->addAnimation(animation);
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*/
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animationGroup->start(QAbstractAnimation::DeleteWhenStopped);
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}
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/*!
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Starts the drop effect.
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*/
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void HsWidgetHostVisual::startDropEffect()
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{
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/* TODO: Uncomment after the Qt bug has been fixed.
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QGraphicsDropShadowEffect *effect =
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static_cast<QGraphicsDropShadowEffect *>(graphicsEffect());
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*/
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HbInstantFeedback::play(HbFeedback::ItemDrop);
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QParallelAnimationGroup *animationGroup = new QParallelAnimationGroup;
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QPropertyAnimation *animation = new QPropertyAnimation(this, "scale");
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animation->setDuration(HSCONFIGURATION_GET(widgetDropEffectDuration));
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animation->setEndValue(1);
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animationGroup->addAnimation(animation);
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/* TODO: Uncomment after the Qt bug has been fixed.
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animation = new QPropertyAnimation(effect, "offset");
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animation->setDuration(200);
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animation->setEndValue(QPointF(3, 3));
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animationGroup->addAnimation(animation);
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*/
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animationGroup->start(QAbstractAnimation::DeleteWhenStopped);
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}
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/*!
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\fn HsWidgetHost::resized()
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Notifies the home screen framework that this widget
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host has resized itself.
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*/
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/*!
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Reimplemented from QObject for monitoring changes in
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contained widget's size.
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*/
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bool HsWidgetHostVisual::eventFilter(QObject *watched, QEvent *event)
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{
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if (event->type() == QEvent::GraphicsSceneResize ) {
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QGraphicsSceneResizeEvent *resizeEvent =
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static_cast<QGraphicsSceneResizeEvent *>(event);
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setNewSize(resizeEvent->newSize());
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emit resized();
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}
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return HbWidget::eventFilter(watched, event);
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}
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/*!
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Reimplemented from HbWidget for pan gesture handling.
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*/
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void HsWidgetHostVisual::gestureEvent(QGestureEvent *event)
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{
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HsScene *scene = HsScene::instance();
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QGesture *gesture = event->gesture(Qt::PanGesture);
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if (gesture) {
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switch (gesture->state()) {
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case Qt::GestureStarted:
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grabMouse();
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emit scene->pagePanStarted(event);
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break;
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case Qt::GestureUpdated:
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emit scene->pagePanUpdated(event);
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break;
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case Qt::GestureFinished:
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case Qt::GestureCanceled:
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ungrabMouse();
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emit scene->pagePanFinished(event);
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break;
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default:
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break;
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}
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}
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}
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/*!
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\fn HsWidgetHostVisual::mousePressEvent(QGraphicsSceneMouseEvent *)
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Reimplemented from QGraphicsItem for eating all mouse presses.
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*/
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/*!
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Configures the touch are for this widget host.
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*/
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void HsWidgetHostVisual::setupTouchArea()
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{
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mTouchArea = new HsWidgetTouchArea(this);
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mTouchArea->setZValue(1);
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}
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/*!
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Configures the effects for this widget host.
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*/
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void HsWidgetHostVisual::setupEffects()
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{
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/* TODO: Uncomment after the Qt bug has been fixed.
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QGraphicsDropShadowEffect *effect =
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new QGraphicsDropShadowEffect(this);
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effect->setColor(QColor(0, 0, 0, 150));
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effect->setBlurRadius(5);
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effect->setOffset(3);
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setGraphicsEffect(effect);
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*/
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}
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/*!
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Resizes this widget host to the given \a size.
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*/
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void HsWidgetHostVisual::setNewSize(const QSizeF &size)
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{
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mTouchArea->resize(size);
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resize(size);
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setPreferredSize(size);
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}
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