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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: Track List Widget 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 |
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19 #include <QGraphicsSceneMouseEvent> |
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20 |
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21 #ifndef UNIT_TESTING |
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22 #include <hbinstance.h> |
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23 #else |
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24 #include "hbinstancestub.h" |
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25 #endif |
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26 |
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27 #include <hblistview.h> |
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28 #include <hbframeitem.h> |
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29 #include <hbmainwindow.h> |
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30 #include <hbstyleloader.h> |
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31 |
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32 |
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33 #include "mptracklistwidget.h" |
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34 |
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35 |
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36 const int swipeAngleTolerance = 30; // angle is from 0 to 360 |
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37 |
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38 /*! |
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39 \class MpTrackListWidget |
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40 \brief Widget with a list of tracks for Media Wall. |
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41 |
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42 This widget provides a list with custom style and a background. |
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43 |
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44 */ |
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45 |
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46 /*! |
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47 \fn void closed() |
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48 |
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49 This signal is emitted when the track list is closed by the user with a |
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50 left swipe gesture. |
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51 */ |
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52 |
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53 |
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54 /*! |
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55 Creates the MpTrackListWidget. |
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56 */ |
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57 MpTrackListWidget::MpTrackListWidget( QGraphicsItem *parent ) : HbWidget( parent ) |
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58 { |
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59 // Register the custorm css path for the list items. |
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60 HbStyleLoader::registerFilePath(":/css/mpcustomlistitem.css"); |
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61 HbStyleLoader::registerFilePath(":/css/mpcustomlistitem.hblistviewitem.widgetml"); |
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62 mList = new HbListView( this ); |
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63 // set layout name that matches the custom list item layout. |
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64 mList->setLayoutName("mpmwtracklist"); |
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65 |
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66 //grab the gesture for close. |
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67 grabGesture(Qt::SwipeGesture); |
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68 |
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69 mFrameItem = new HbFrameItem( this ); |
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70 mFrameItem->frameDrawer().setFrameType( HbFrameDrawer::NinePieces ); |
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71 mFrameItem->frameDrawer().setFrameGraphicsName( "qtg_fr_multimedia_trans" ); |
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72 mFrameItem->setZValue(-1); |
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73 } |
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74 |
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75 /*! |
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76 Destructs the track list widget. |
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77 */ |
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78 MpTrackListWidget::~MpTrackListWidget() |
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79 { |
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80 } |
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81 |
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82 /*! |
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83 Returns the HbListView instance. |
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84 */ |
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85 HbListView *MpTrackListWidget::list() |
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86 { |
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87 return mList; |
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88 } |
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89 |
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90 /*! |
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91 \reimp |
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92 */ |
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93 void MpTrackListWidget::resizeEvent(QGraphicsSceneResizeEvent *event) |
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94 { |
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95 mFrameItem->setGeometry( rect() ); |
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96 qreal margin = 0.0; |
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97 style()->parameter(QString("var(hb-param-margin-gene-middle-vertical)"), margin); |
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98 mList->setGeometry( rect().adjusted( margin, margin, -margin, -margin ) ); |
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99 HbWidget::resizeEvent( event ); |
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100 } |
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101 |
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102 /*! |
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103 \reimp |
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104 */ |
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105 void MpTrackListWidget::mousePressEvent( QGraphicsSceneMouseEvent *event ) |
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106 { |
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107 if ( event->button() == Qt::LeftButton ) { |
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108 event->accept(); |
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109 } |
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110 else { |
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111 event->ignore(); |
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112 } |
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113 } |
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114 |
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115 /*! |
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116 \reimp |
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117 */ |
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118 void MpTrackListWidget::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) |
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119 { |
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120 if ( event->button() == Qt::LeftButton ) { |
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121 event->accept(); |
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122 } |
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123 else { |
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124 event->ignore(); |
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125 } |
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126 } |
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127 |
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128 /*! |
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129 \reimp |
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130 */ |
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131 void MpTrackListWidget::gestureEvent(QGestureEvent *event) |
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132 { |
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133 QGesture* gesture = event->gesture(Qt::SwipeGesture); |
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134 if (gesture) { |
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135 QSwipeGesture* swipe = static_cast<QSwipeGesture *>(gesture); |
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136 if (swipe->state() == Qt::GestureFinished && |
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137 swipeAngleToDirection (swipe->swipeAngle()) == QSwipeGesture::Left ) { |
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138 //Left gesture is the direction in wich the track list slides to close. |
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139 emit closed(); |
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140 event->accept(Qt::SwipeGesture); |
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141 } |
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142 } |
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143 } |
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144 |
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145 /*! |
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146 Maps swipe \a angle to QSwipeGesture::SwipeDirection based on a tolerance |
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147 parameter and orientation. This funtions helps to identify a swipe even |
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148 if it is not sharp movement from 180 to 0 degrees on the righ swipe |
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149 gesture for instance. Since gesture events are mesured on device |
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150 cordinates this also helps to correct the gesture to local cordinates |
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151 bases on device orientation, wich is done using QT transformations, |
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152 meaning local cordinates and device cordinates are not always aligned. |
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153 */ |
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154 QSwipeGesture::SwipeDirection MpTrackListWidget::swipeAngleToDirection( |
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155 int angle ) |
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156 { |
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157 int delta = swipeAngleTolerance; |
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158 if ( hbInstance->allMainWindows()[0]->orientation() == Qt::Horizontal ) { |
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159 //correction for transformation on rotation. |
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160 #ifdef __WINS__ //wincw with forced rotation is to the right. |
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161 angle += ( angle < 90 ) ? 270 : -90; |
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162 #else//currently hardware rotations is to the left. |
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163 angle += 90; |
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164 if ( angle > 360 ) { |
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165 angle -= 360; |
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166 } |
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167 #endif |
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168 |
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169 } |
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170 QSwipeGesture::SwipeDirection direction( QSwipeGesture::NoDirection ); |
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171 if ( ( angle > 90 - delta) && ( angle < 90 + delta ) ) { |
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172 direction = QSwipeGesture::Up; |
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173 } else if ( ( angle > 270 - delta ) && (angle < 270 + delta ) ) { |
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174 direction = QSwipeGesture::Down; |
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175 } else if ( ( ( angle >= 0 ) && ( angle < delta ) ) |
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176 || ( ( angle > 360 - delta ) && ( angle <= 360 ) ) ) { |
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177 direction = QSwipeGesture::Right; |
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178 } else if ( ( angle > 180 - delta ) && ( angle < 180 + delta ) ) { |
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179 direction = QSwipeGesture::Left; |
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180 } |
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181 return direction; |
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182 } |
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183 |
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184 //EOF |