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/*
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* Copyright (c) 2010 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: CalenDayContentWidget implementation.
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*
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*/
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// System includes
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#include <QGraphicsLinearLayout>
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// User includes
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#include "calendaycontentwidget.h"
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#include "calendayitemview.h"
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/*!
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\class CalenDayContentWidget
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\brief Content widget is a container class for horizontal layouted widgets.
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*/
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/*!
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\brief Constructor
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\param parent The parent of central widget
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*/
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CalenDayContentWidget::CalenDayContentWidget(QGraphicsItem *parent) :
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HbWidget(parent), mLayout(NULL)
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{
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mWidgets.clear();
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}
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/*!
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\brief Destructor
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*/
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CalenDayContentWidget::~CalenDayContentWidget()
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{
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// Just clear widget list - parent object will destroy its children
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mWidgets.clear();
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}
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/*!
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\brief Adds the widget to central widget and layouts it horizontally.
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Ownership of item is passed to CalenDayContentWidget.
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\param item Widget to be added
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\param where Place where widget should be added (as first/last item)
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*/
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void CalenDayContentWidget::add(HbWidget *item, CalenWidgetPosition where)
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{
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if (item) {
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// Create linear, horizontal layout if not exist
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if (!mLayout) {
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mLayout = new QGraphicsLinearLayout(Qt::Horizontal, NULL);
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mLayout->setContentsMargins(0.0, 0.0, 0.0, 0.0);
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mLayout->setSpacing(0.0);
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}
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switch (where) {
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case ECalenFirstWidget: {
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mLayout->insertItem(0, item);
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mWidgets.insert(0, item);
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break;
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}
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case ECalenLastWidget:
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default: {
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mLayout->addItem(item);
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mWidgets.append(item);
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}
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}
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// If layout has no parent - apply it to central widget
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if (mLayout && !mLayout->parentLayoutItem()) {
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setLayout(mLayout);
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}
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}
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}
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/*!
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\brief Takes the widget and removes it from central widget.
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Ownership of item is passed to caller.
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\param which Indicates which widget should be taken (first/last)
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\return Pointer to HbWidget or NULL if widget was not found
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*/
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HbWidget* CalenDayContentWidget::take(CalenWidgetPosition which)
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{
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HbWidget *itemToTake = NULL;
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if (mWidgets.count() > 0) {
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switch (which) {
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case ECalenFirstWidget: {
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itemToTake = mWidgets.takeFirst();
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break;
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}
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case ECalenLastWidget: {
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itemToTake = mWidgets.takeLast();
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break;
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}
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default: {
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// do nothing
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}
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}
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if (mLayout && itemToTake) {
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mLayout->removeItem(itemToTake);
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}
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}
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return itemToTake;
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}
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/*!
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\brief Removed the widget from central widget.
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Widget is removed and deleted.
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\param which Indicates which widget should be removed (first/last)
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*/
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void CalenDayContentWidget::remove(CalenWidgetPosition which)
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{
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HbWidget *itemToRemove = take(which);
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if (itemToRemove) {
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delete itemToRemove;
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}
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}
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/*!
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\brief Performs relayout of widgets when it is needed.
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Relayout is done depending on last scroll move:
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- if widget was scrolled to next: first widget is taken and added as last
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- if widget was scrolled to prev: last widget is taken and inserted as first
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Emits widgetsRelayoutFinished SIGNAL when relayout is over.
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\param scrollTo Direction of last movement
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*/
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void CalenDayContentWidget::relayoutWidgets(CalenScrollDirection scrollTo)
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{
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HbWidget *widget = NULL;
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switch (scrollTo) {
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case ECalenScrollToNext: {
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widget = take(ECalenFirstWidget);
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add(widget, ECalenLastWidget);
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break;
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}
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case ECalenScrollToPrev: {
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widget = take(ECalenLastWidget);
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add(widget, ECalenFirstWidget);
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}
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case ECalenScrollNoDayChange:
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default: {
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// do nothing
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}
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}
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emit widgetsRelayoutFinished(scrollTo);
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}
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/*!
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\brief SLOT handles simultanous vertical scrolling of owned widgets.
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\param newPos New scroll position
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*/
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void CalenDayContentWidget::widgetScrolled(const QPointF &newPos)
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{
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for (int i = 0; i < mWidgets.count(); i++) {
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CalenDayItemView *view =
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static_cast<CalenDayItemView *> (mWidgets[i]);
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view->scrollVertically(newPos);
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}
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emit scrollPositionChanged(newPos);
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}
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// End of File
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