/*
* Copyright (c) 2009 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 <QGraphicsLinearLayout>
#include <QParallelAnimationGroup>
#include <QPropertyAnimation>
#include <QGraphicsDropShadowEffect>
#include <QGraphicsSceneResizeEvent>
#include <QGesture>
#include <QGraphicsScene>
#include <HbInstantFeedback>
#include <HbTouchArea>
#include "hswidgethostvisual.h"
#include "hswidgethost.h"
#include "hsscene.h"
#include "hsconfiguration.h"
#include "hswidgettoucharea.h"
/*!
\class HsWidgetHostVisual
\ingroup group_hsdomainmodel
\brief Each widget is controlled by the home screen framework through a widget host.
*/
/*!
Constructs a new widget host with given \a databaseId and
\a parent item.
*/
HsWidgetHostVisual::HsWidgetHostVisual(QGraphicsItem *parent)
: HbWidget(parent),mWidget(0)
{
setFlag(QGraphicsItem::ItemClipsChildrenToShape);
setFlag(QGraphicsItem::ItemHasNoContents);
grabGesture(Qt::TapGesture);
grabGesture(Qt::TapAndHoldGesture);
grabGesture(Qt::PanGesture);
grabGesture(Qt::PinchGesture);
grabGesture(Qt::SwipeGesture);
grabGesture(Qt::CustomGesture);
setupTouchArea();
setupEffects();
setMinimumSize(HSCONFIGURATION_GET(minimumWidgetSizeInPixels));
setMaximumSize(HSCONFIGURATION_GET(maximumWidgetSizeInPixels));
}
/*!
Destructor.
*/
HsWidgetHostVisual::~HsWidgetHostVisual()
{
}
/*!
Reimplemented from QGraphicsItem. Returns the shape of the
this widget host. The shape is computed based on the contained
widget.
*/
QPainterPath HsWidgetHostVisual::shape() const
{
QPainterPath path;
if (mWidget) {
QRectF currRect = rect();
path = mWidget->shape();
QRectF pathRect(path.boundingRect());
if (pathRect.width() > currRect.width()
|| pathRect.height() > currRect.height()) {
QPainterPath newPath(currRect.topLeft());
newPath.addRect(currRect);
path = path.intersected(newPath);
}
}
return path;
}
void HsWidgetHostVisual::setWidget(QObject *widget)
{
mWidget = qobject_cast<QGraphicsWidget *>(widget);
if (mWidget) {
mWidget->installEventFilter(this);
mWidget->setParentItem(this);
setNewSize(mWidget->size());
}
}
void HsWidgetHostVisual::setVisualModel(HsWidgetHost *model)
{
mVisualModel = model;
}
HsWidgetHost *HsWidgetHostVisual::visualModel() const
{
return mVisualModel;
}
/*!
Starts the drag effect.
*/
void HsWidgetHostVisual::startDragEffect()
{
/* TODO: Uncomment after the Qt bug has been fixed.
QGraphicsDropShadowEffect *effect =
static_cast<QGraphicsDropShadowEffect *>(graphicsEffect());
*/
HbInstantFeedback::play(HbFeedback::ItemPick);
setTransformOriginPoint(rect().center());
QParallelAnimationGroup *animationGroup = new QParallelAnimationGroup();
QPropertyAnimation *animation = new QPropertyAnimation(this, "scale");
animation->setDuration(HSCONFIGURATION_GET(widgetDragEffectDuration));
animation->setEndValue(1.1);
animationGroup->addAnimation(animation);
/* TODO: Uncomment after the Qt bug has been fixed.
animation = new QPropertyAnimation(effect, "offset");
animation->setDuration(200);
animation->setEndValue(QPointF(8 ,8));
animationGroup->addAnimation(animation);
*/
animationGroup->start(QAbstractAnimation::DeleteWhenStopped);
}
/*!
Starts the drop effect.
*/
void HsWidgetHostVisual::startDropEffect()
{
/* TODO: Uncomment after the Qt bug has been fixed.
QGraphicsDropShadowEffect *effect =
static_cast<QGraphicsDropShadowEffect *>(graphicsEffect());
*/
HbInstantFeedback::play(HbFeedback::ItemDrop);
QParallelAnimationGroup *animationGroup = new QParallelAnimationGroup;
QPropertyAnimation *animation = new QPropertyAnimation(this, "scale");
animation->setDuration(HSCONFIGURATION_GET(widgetDropEffectDuration));
animation->setEndValue(1);
animationGroup->addAnimation(animation);
/* TODO: Uncomment after the Qt bug has been fixed.
animation = new QPropertyAnimation(effect, "offset");
animation->setDuration(200);
animation->setEndValue(QPointF(3, 3));
animationGroup->addAnimation(animation);
*/
animationGroup->start(QAbstractAnimation::DeleteWhenStopped);
}
/*!
\fn HsWidgetHost::resized()
Notifies the home screen framework that this widget
host has resized itself.
*/
/*!
Reimplemented from QObject for monitoring changes in
contained widget's size.
*/
bool HsWidgetHostVisual::eventFilter(QObject *watched, QEvent *event)
{
if (event->type() == QEvent::GraphicsSceneResize ) {
QGraphicsSceneResizeEvent *resizeEvent =
static_cast<QGraphicsSceneResizeEvent *>(event);
setNewSize(resizeEvent->newSize());
emit resized();
}
return HbWidget::eventFilter(watched, event);
}
/*!
Reimplemented from HbWidget for pan gesture handling.
*/
void HsWidgetHostVisual::gestureEvent(QGestureEvent *event)
{
HsScene *scene = HsScene::instance();
QGesture *gesture = event->gesture(Qt::PanGesture);
if (gesture) {
switch (gesture->state()) {
case Qt::GestureStarted:
grabMouse();
emit scene->pagePanStarted(event);
break;
case Qt::GestureUpdated:
emit scene->pagePanUpdated(event);
break;
case Qt::GestureFinished:
case Qt::GestureCanceled:
ungrabMouse();
emit scene->pagePanFinished(event);
break;
default:
break;
}
}
}
/*!
\fn HsWidgetHostVisual::mousePressEvent(QGraphicsSceneMouseEvent *)
Reimplemented from QGraphicsItem for eating all mouse presses.
*/
/*!
Configures the touch are for this widget host.
*/
void HsWidgetHostVisual::setupTouchArea()
{
mTouchArea = new HsWidgetTouchArea(this);
mTouchArea->setZValue(1);
}
/*!
Configures the effects for this widget host.
*/
void HsWidgetHostVisual::setupEffects()
{
/* TODO: Uncomment after the Qt bug has been fixed.
QGraphicsDropShadowEffect *effect =
new QGraphicsDropShadowEffect(this);
effect->setColor(QColor(0, 0, 0, 150));
effect->setBlurRadius(5);
effect->setOffset(3);
setGraphicsEffect(effect);
*/
}
/*!
Resizes this widget host to the given \a size.
*/
void HsWidgetHostVisual::setNewSize(const QSizeF &size)
{
mTouchArea->resize(size);
resize(size);
setPreferredSize(size);
}