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1 /* |
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2 * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Reflection effect for Music Player Media Wall. |
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15 * |
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16 */ |
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17 |
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18 #include <QPainter> |
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19 #include <QGraphicsItem> |
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20 #include <hbinstance.h> |
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21 |
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22 #include "mpreflectioneffect.h" |
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23 |
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24 |
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25 /*! |
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26 \class MpReflectionEffect |
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27 \brief The MpReflectionEffect class provides a reflection effect. |
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28 |
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29 Renders the source with a reflection. |
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30 */ |
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31 |
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32 /*! |
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33 Constructs a new MpReflectionEffect instance. |
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34 The \a parent parameter is passed to QGraphicsEffect's constructor. |
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35 */ |
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36 MpReflectionEffect::MpReflectionEffect(QObject *parent) |
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37 : QGraphicsEffect( parent ) |
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38 { |
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39 } |
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40 |
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41 /*! |
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42 Destroys the effect. |
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43 */ |
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44 MpReflectionEffect::~MpReflectionEffect() |
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45 { |
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46 } |
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47 |
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48 /*! |
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49 \reimp |
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50 */ |
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51 QRectF MpReflectionEffect::boundingRectFor(const QRectF &rect) const |
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52 { |
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53 QRectF retRect = rect; |
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54 //this bounding rect is in device cordinates, correcting based on current transform. |
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55 if ( hbInstance->allMainWindows()[0]->orientation() == Qt::Horizontal ) { |
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56 #ifdef __WINS__ |
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57 retRect.adjust(0,0,retRect.width(),0); //wincw with forced rotation is to the right. |
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58 #else |
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59 retRect.adjust(-retRect.width(),0,0,0);//currently hardware rotations is to the left. |
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60 #endif |
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61 } else { |
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62 retRect.adjust(0,0,0,retRect.height()); |
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63 } |
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64 |
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65 return retRect; |
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66 } |
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67 |
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68 /*! |
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69 \reimp |
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70 */ |
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71 void MpReflectionEffect::draw(QPainter *painter) |
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72 { |
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73 //currently sourceBoundingRect returns somehing like boundingRectFor and |
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74 //wrong rect for widgets with scroll area. As a workaround we can get the |
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75 //original bounding rect assuming that the widget using the effect is the |
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76 //effect parent. |
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77 QGraphicsItem * sourceItem; |
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78 sourceItem = qobject_cast<QGraphicsItem *>( parent() ); |
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79 QPixmap pixmap; |
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80 QPoint offset; |
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81 pixmap = sourcePixmap( Qt::LogicalCoordinates,&offset, QGraphicsEffect::NoPad ); |
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82 painter->drawPixmap( offset, pixmap ); |
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83 if ( sourceItem ) { |
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84 painter->save(); |
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85 painter->scale( 1, -1 ); |
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86 //for some reson tranlation does not work, translating cordinates by hand. |
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87 QPointF reflectionOffset( 0.0, - 2.0 * sourceItem->boundingRect().height() ); |
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88 painter->drawPixmap( offset + reflectionOffset, pixmap ); |
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89 QRectF reflectionRect; |
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90 reflectionRect.setTopLeft( reflectionOffset ); |
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91 reflectionRect.setHeight ( sourceItem->boundingRect().height() ); |
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92 reflectionRect.setWidth( pixmap.width() ); |
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93 painter->fillRect( reflectionRect, QColor::fromRgbF( 0, 0, 0, 0.5f ) ); |
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94 painter->restore(); |
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95 } |
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96 } |
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97 |
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98 // EOF |