homescreenapp/hsutils/src/hspageindicatoritem.cpp
changeset 36 cdae8c6c3876
child 39 4e8ebe173323
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/homescreenapp/hsutils/src/hspageindicatoritem.cpp	Fri Apr 16 14:54:01 2010 +0300
@@ -0,0 +1,121 @@
+/*
+* 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 <QGraphicsColorizeEffect>
+#include <QPropertyAnimation>
+
+#include <HbIconItem>
+
+#include "hspageindicatoritem.h"
+
+namespace
+{
+    const char gNormalIconName[]    = "qtg_graf_hspage_normal";
+    const char gHighlightIconName[] = "qtg_graf_hspage_highlight";
+}
+
+/*!
+
+*/
+HsPageIndicatorItem::HsPageIndicatorItem(bool active, QGraphicsItem *parent)
+  : HbWidget(parent),
+    mIconItem(0),
+    mIsActive(active)
+{
+    mIconItem = new HbIconItem;
+    if (active) {
+        mIconItem->setIcon(HbIcon(gHighlightIconName));
+    } else {
+        mIconItem->setIcon(HbIcon(gNormalIconName));
+    }
+    
+    QGraphicsLinearLayout *layout = new QGraphicsLinearLayout;
+    layout->setContentsMargins(0, 0, 0, 0);
+    layout->addItem(mIconItem);
+    setLayout(layout);
+
+    QGraphicsColorizeEffect *effect = new QGraphicsColorizeEffect;
+    effect->setColor(Qt::white);
+    effect->setStrength(0);
+    effect->setEnabled(false);
+    setGraphicsEffect(effect);
+}
+
+/*!
+
+*/
+HsPageIndicatorItem::~HsPageIndicatorItem()
+{
+}
+
+/*!
+
+*/
+void HsPageIndicatorItem::setActive(bool active)
+{
+    if (mIsActive != active) {
+        mIsActive = active;
+        if (mIsActive) {
+            mIconItem->setIcon(HbIcon(gHighlightIconName));
+            startAnimation();
+        } else {
+            mIconItem->setIcon(HbIcon(gNormalIconName));
+        }
+    }
+}
+
+/*!
+
+*/
+bool HsPageIndicatorItem::isActive() const
+{
+    return mIsActive;
+}
+
+
+/*!
+
+*/
+bool HsPageIndicatorItem::isAnimationRunning() const
+{
+    return graphicsEffect()->isEnabled();
+}
+
+/*!
+
+*/
+void HsPageIndicatorItem::startAnimation()
+{
+    graphicsEffect()->setEnabled(true);
+    setTransformOriginPoint(rect().center());
+    QPropertyAnimation *animation = 
+        new QPropertyAnimation(graphicsEffect(), "strength");
+    animation->setDuration(800);
+    animation->setKeyValueAt(0.2, 1);
+    animation->setEndValue(0);
+    connect(animation, SIGNAL(finished()), SLOT(animationFinished()));
+    animation->start(QAbstractAnimation::DeleteWhenStopped);
+}
+
+/*!
+
+*/
+void HsPageIndicatorItem::animationFinished()
+{
+    graphicsEffect()->setEnabled(false);
+}