1 /*

     2 * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: Time label for oled digital clock.

    15 *

    16 */

    17 

    18 #include "snsroledtimelabel.h"

    19 #include "snsrcolors.h"

    20 

    21 #include <hbevent.h>

    22 #include <QPainter>

    23 

    24 

    25 

    26 /*!

    27     \class SnsrOledTimeLabel

    28     \ingroup group_snsrbigclockscreensaverprovider

    29     \brief Screensaver oled digital clock's time label

    30  */

    31 

    32 /*!

    33     Constructs a new SnsrOledTimeLabel.

    34     \param parent Parent object.

    35  */

    36 

    37 SnsrOledTimeLabel::SnsrOledTimeLabel(QGraphicsItem *parent)

    38     : HbTextItem(parent)

    39 {

    40     setTextColor(SnsrColors::PowerSaveModeWidgetColor);

    41     

    42     setMinimumLines( 1 );

    43     setMaximumLines( 1 );

    44     setAlignment(Qt::AlignCenter);

    45     

    46     // as we do own painting, must disable the flag that is enabled

    47     // by default due to performance optimatizations.

    48     setFlag(QGraphicsItem::ItemHasNoContents,false);

    49 }

    50 

    51 SnsrOledTimeLabel::~SnsrOledTimeLabel()

    52 {

    53 }

    54 

    55 /*!

    56     \reimp

    57     We want to draw only the outlines of the time label text and thus

    58     text is drawn here with QPainterPath and pen (no brush) which seems to be the

    59     only way to accomplish this. 

    60     Base class's Paint method must not be called!

    61     We use base class only to get the bounding rect inside which to draw the text

    62     (boundingRect has been adjusted to current text, font, alignment etc.)

    63  */

    64 void SnsrOledTimeLabel::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)

    65 {

    66     Q_UNUSED(option);

    67     Q_UNUSED(widget);

    68     

    69     // TODO: changes needed for mirrored layout and/or other than latin digits??

    70     

    71     painter->save();   //saves the painter state.

    72     

    73     QPainterPath path;

    74     

    75     QRectF boundingRect = this->boundingRect();   

    76     QString timeText = this->text();

    77     QFont font = this->font();

    78 

    79     // As painterPath takes the left end of the text's baseline as 

    80     // a parameter we must calculate that point from boundingRect's bottom left 

    81     // so that font's descent (and baseline (=1)) are taken into account. 

    82     // We want to center the text horizontally too. The logic

    83     // is basically the same as used inside the base class for drawing the text

    84     // within boundingRect.

    85     QPointF leftEndOfBaseline(0,0);  // for painterPath

    86     QFontMetrics fontMetrics(font);

    87     int descent = fontMetrics.descent();

    88     int width = fontMetrics.width(timeText);   

    89     leftEndOfBaseline.setY(boundingRect.bottomLeft().y() - descent -1);

    90     leftEndOfBaseline.setX((boundingRect.width() - width) / 2 ); // centerH

    91     

    92     path.addText(leftEndOfBaseline, font, timeText);  

    93     

    94     painter->setFont(font);

    95 

    96     QPen newPen = painter->pen();

    97     newPen.setWidth( 1 ); // TODO: is this width ok?

    98     newPen.setColor(this->textColor());

    99     painter->setPen(newPen);

   100     

   101     painter->setBrush(QBrush(Qt::NoBrush));

   102 

   103   //  painter->setLayoutDirection ( layoutDirection() ); // TODO: needed or not?

   104     

   105     painter->setRenderHint(QPainter::Antialiasing, true); // TODO: use or not?

   106     

   107     painter->drawPath(path);

   108     

   109     // Must restore the painter or the whole UI will be messed up!

   110     painter->restore();

   111 

   112 }

   113