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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: Time label for oled digital clock.
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*
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*/
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#include "snsroledtimelabel.h"
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#include <hbevent.h>
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#include <hbcolorscheme.h>
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#include <QPainter>
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const QString snsrForegroundColorRole("snsrforeground");
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/*!
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\class SnsrOledTimeLabel
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\ingroup group_snsrbigclockscreensaverprovider
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\brief Screensaver oled digital clock's time label
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*/
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/*!
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Constructs a new SnsrOledTimeLabel.
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\param parent Parent object.
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*/
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SnsrOledTimeLabel::SnsrOledTimeLabel(QGraphicsItem *parent)
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: HbTextItem(parent)
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{
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setThemedTextColor();
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setMinimumLines( 1 );
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setMaximumLines( 1 );
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setAlignment(Qt::AlignCenter);
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// as we do own painting, must disable the flag that is enabled
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// by default due to performance optimatizations.
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setFlag(QGraphicsItem::ItemHasNoContents,false);
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}
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SnsrOledTimeLabel::~SnsrOledTimeLabel()
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{
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}
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/*!
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\reimp
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We want to draw only the outlines of the time label text and thus
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text is drawn here with QPainterPath and pen (no brush) which seems to be the
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only way to accomplish this.
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Base class's Paint method must not be called!
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We use base class only to get the bounding rect inside which to draw the text
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(boundingRect has been adjusted to current text, font, alignment etc.)
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*/
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void SnsrOledTimeLabel::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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{
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Q_UNUSED(option);
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Q_UNUSED(widget);
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// TODO: changes needed for mirrored layout and/or other than latin digits??
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painter->save(); //saves the painter state.
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QPainterPath path;
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QRectF boundingRect = this->boundingRect();
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QString timeText = this->text();
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QFont font = this->font();
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// As painterPath takes the left end of the text's baseline as
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// a parameter we must calculate that point from boundingRect's bottom left
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// so that font's descent (and baseline (=1)) are taken into account.
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// We want to center the text horizontally too. The logic
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// is basically the same as used inside the base class for drawing the text
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// within boundingRect.
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QPointF leftEndOfBaseline(0,0); // for painterPath
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QFontMetrics fontMetrics(font);
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int descent = fontMetrics.descent();
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int width = fontMetrics.width(timeText);
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leftEndOfBaseline.setY(boundingRect.bottomLeft().y() - descent -1);
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leftEndOfBaseline.setX((boundingRect.width() - width) / 2 ); // centerH
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path.addText(leftEndOfBaseline, font, timeText);
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painter->setFont(font);
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QPen newPen = painter->pen();
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newPen.setWidth( 1 ); // TODO: is this width ok?
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newPen.setColor(this->textColor());
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painter->setPen(newPen);
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painter->setBrush(QBrush(Qt::NoBrush));
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// painter->setLayoutDirection ( layoutDirection() ); // TODO: needed or not?
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painter->setRenderHint(QPainter::Antialiasing, true); // TODO: use or not?
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painter->drawPath(path);
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// Must restore the painter or the whole UI will be messed up!
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painter->restore();
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}
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/*!
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\reimp
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*/
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void SnsrOledTimeLabel::changeEvent(QEvent * event)
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{
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if (event->type() == HbEvent::ThemeChanged) {
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setThemedTextColor();
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}
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return HbTextItem::changeEvent(event);
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}
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/*!
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Sets the time label's color to follow the theme.
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*/
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void SnsrOledTimeLabel::setThemedTextColor()
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{
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QColor textColor(HbColorScheme::color(snsrForegroundColorRole));
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if (textColor.isValid()) {
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setTextColor(textColor);
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} else {
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// fallback mechanism when color definition is missing in default theme
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setTextColor(Qt::white);
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}
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}
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