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 

    20 #include <hbevent.h>

    21 #include <QPainter>

    22 

    23 

    24 

    25 /*!

    26     \class SnsrOledTimeLabel

    27     \ingroup group_snsrbigclockscreensaverprovider

    28     \brief Screensaver oled digital clock's time label

    29  */

    30 

    31 /*!

    32     Constructs a new SnsrOledTimeLabel.

    33     \param parent Parent object.

    34  */

    35 

    36 SnsrOledTimeLabel::SnsrOledTimeLabel(QGraphicsItem *parent)

    37     : HbTextItem(parent)

    38 {

    39     setTextColor(Qt::white);

    40     

    41     setMinimumLines( 1 );

    42     setMaximumLines( 1 );

    43     setAlignment(Qt::AlignCenter);

    44     

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

    46     // by default due to performance optimatizations.

    47     setFlag(QGraphicsItem::ItemHasNoContents,false);

    48 }

    49 

    50 SnsrOledTimeLabel::~SnsrOledTimeLabel()

    51 {

    52 }

    53 

    54 /*!

    55     \reimp

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

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

    58     only way to accomplish this. 

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

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

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

    62  */

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

    64 {

    65     Q_UNUSED(option);

    66     Q_UNUSED(widget);

    67     

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

    69     

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

    71     

    72     QPainterPath path;

    73     

    74     QRectF boundingRect = this->boundingRect();   

    75     QString timeText = this->text();

    76     QFont font = this->font();

    77 

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

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

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

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

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

    83     // within boundingRect.

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

    85     QFontMetrics fontMetrics(font);

    86     int descent = fontMetrics.descent();

    87     int width = fontMetrics.width(timeText);   

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

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

    90     

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

    92     

    93     painter->setFont(font);

    94 

    95     QPen newPen = painter->pen();

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

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

    98     painter->setPen(newPen);

    99     

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

   101 

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

   103     

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

   105     

   106     painter->drawPath(path);

   107     

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

   109     painter->restore();

   110 

   111 }

   112