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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: CalenDayContentWidget implementation. |
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15 * |
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16 */ |
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17 |
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18 // System includes |
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19 #include <QGraphicsLinearLayout> |
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20 #include <HbModelIterator> |
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21 |
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22 // User includes |
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23 #include "calendaymodelmanager.h" |
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24 #include "calendaycontentwidget.h" |
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25 #include "calendayitemview.h" |
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26 #include "calendaycontentscrollarea.h" |
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27 |
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28 /*! |
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29 \class CalenDayContentWidget |
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30 \brief Content widget is a container class for horizontal layouted widgets. |
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31 */ |
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32 |
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33 /*! |
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34 \brief Constructor |
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35 |
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36 \param modelManager Day View model manager |
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37 \param parent The parent of central widget |
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38 */ |
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39 CalenDayContentWidget::CalenDayContentWidget( |
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40 CalenDayModelManager &modelManager, |
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41 QGraphicsItem *parent) : |
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42 HbWidget(parent), mLayout(NULL), mModelManager(modelManager) |
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43 { |
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44 mWidgets.clear(); |
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45 initializeViews(); |
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46 } |
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47 |
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48 /*! |
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49 \brief Destructor |
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50 */ |
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51 CalenDayContentWidget::~CalenDayContentWidget() |
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52 { |
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53 // Just clear widget list - parent object will destroy its children |
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54 mWidgets.clear(); |
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55 } |
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56 |
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57 /*! |
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58 \brief Adds the widget to central widget and layouts it horizontally. |
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59 |
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60 Ownership of item is passed to CalenDayContentWidget. |
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61 |
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62 \param item Widget to be added |
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63 \param where Place where widget should be added (as first/last item) |
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64 */ |
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65 void CalenDayContentWidget::add(HbWidget* item, CalenWidgetPosition where) |
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66 { |
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67 // Create linear, horizontal layout if not exist |
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68 if (!mLayout) { |
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69 mLayout = new QGraphicsLinearLayout(Qt::Horizontal, NULL); |
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70 mLayout->setContentsMargins(0.0, 0.0, 0.0, 0.0); |
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71 mLayout->setSpacing(0.0); |
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72 } |
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73 |
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74 switch (where) { |
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75 case ECalenFirstWidget: { |
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76 mLayout->insertItem(0, item); |
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77 mWidgets.insert(0, item); |
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78 break; |
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79 } |
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80 case ECalenLastWidget: |
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81 default: { |
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82 mLayout->addItem(item); |
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83 mWidgets.append(item); |
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84 } |
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85 } |
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86 |
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87 // If layout has no parent - apply it to central widget |
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88 if (mLayout && !mLayout->parentLayoutItem()) { |
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89 setLayout(mLayout); |
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90 } |
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91 } |
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92 |
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93 /*! |
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94 \brief Takes the widget and removes it from central widget. |
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95 |
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96 Ownership of item is passed to caller. |
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97 |
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98 \param which Indicates which widget should be taken (first/last) |
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99 \return Pointer to HbWidget or NULL if widget was not found |
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100 */ |
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101 HbWidget* CalenDayContentWidget::take(CalenWidgetPosition which) |
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102 { |
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103 Q_ASSERT(mLayout); |
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104 |
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105 HbWidget* itemToTake = NULL; |
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106 switch (which) { |
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107 case ECalenFirstWidget: { |
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108 itemToTake = mWidgets.takeFirst(); |
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109 break; |
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110 } |
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111 case ECalenLastWidget: |
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112 default: { |
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113 itemToTake = mWidgets.takeLast(); |
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114 } |
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115 } |
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116 |
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117 if (itemToTake) { |
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118 mLayout->removeItem(itemToTake); |
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119 } |
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120 |
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121 return itemToTake; |
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122 } |
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123 |
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124 /*! |
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125 \brief Removed the widget from central widget. |
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126 |
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127 Widget is removed and deleted. |
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128 |
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129 \param which Indicates which widget should be removed (first/last) |
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130 */ |
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131 void CalenDayContentWidget::remove(CalenWidgetPosition which) |
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132 { |
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133 Q_ASSERT(mLayout); |
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134 |
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135 HbWidget* itemToRemove = NULL; |
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136 switch (which) { |
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137 case ECalenFirstWidget: { |
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138 itemToRemove = mWidgets.takeFirst(); |
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139 break; |
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140 } |
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141 case ECalenLastWidget: |
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142 default: { |
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143 itemToRemove = mWidgets.takeLast(); |
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144 } |
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145 } |
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146 |
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147 if (itemToRemove) { |
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148 mLayout->removeItem(itemToRemove); |
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149 delete itemToRemove; |
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150 } |
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151 } |
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152 |
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153 /*! |
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154 \brief Performs relayout of widgets when it is needed. |
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155 |
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156 Relayout is done depending on last scroll move: |
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157 - if widget was scrolled to next: first widget is taken and added as last |
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158 - if widget was scrolled to prev: last widget is taken and inserted as first |
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159 |
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160 Emits widgetsRelayoutFinished SIGNAL when relayout is over. |
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161 |
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162 \param scrollTo Direction of last movement |
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163 */ |
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164 void CalenDayContentWidget::relayoutWidgets(CalenScrollDirection scrollTo) |
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165 { |
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166 HbWidget* widget = NULL; |
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167 switch (scrollTo) { |
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168 case ECalenScrollToNext: { |
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169 widget = take(ECalenFirstWidget); |
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170 add(widget, ECalenLastWidget); |
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171 break; |
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172 } |
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173 case ECalenScrollToPrev: |
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174 default: { |
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175 widget = take(ECalenLastWidget); |
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176 add(widget, ECalenFirstWidget); |
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177 } |
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178 } |
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179 emit widgetsRelayoutFinished(scrollTo); |
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180 } |
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181 |
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182 /*! |
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183 \brief SLOT handles simultanous vertical scrolling of owned widgets. |
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184 |
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185 \param newPos New scroll position |
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186 */ |
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187 void CalenDayContentWidget::widgetScrolled(const QPointF &newPos) |
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188 { |
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189 for (int i = 0; i < mWidgets.count(); i++) { |
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190 CalenDayItemView *view = |
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191 static_cast<CalenDayItemView *> (mWidgets[i]); |
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192 view->scrollVertically(newPos); |
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193 } |
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194 emit scrollPositionChanged(newPos); |
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195 } |
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196 |
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197 /*! |
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198 \brief Initializes content widgets and adds them to layout. |
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199 |
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200 \param parent Parent object |
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201 */ |
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202 void CalenDayContentWidget::initializeViews() |
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203 { |
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204 // Create item views |
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205 HbModelIterator *iterator(0); |
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206 |
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207 iterator = new HbModelIterator(&mModelManager.getModel( |
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208 CalenDayModelManager::PreviousDay)); |
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209 CalenDayItemView *prevItemView = new CalenDayItemView( |
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210 mModelManager.getServices(), iterator, 0); |
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211 |
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212 iterator = new HbModelIterator(&mModelManager.getModel( |
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213 CalenDayModelManager::CurrentDay)); |
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214 CalenDayItemView *currItemView = new CalenDayItemView( |
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215 mModelManager.getServices(), iterator, 0); |
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216 |
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217 iterator = new HbModelIterator(&mModelManager.getModel( |
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218 CalenDayModelManager::NextDay)); |
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219 CalenDayItemView *nextItemView = new CalenDayItemView( |
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220 mModelManager.getServices(), iterator, 0); |
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221 |
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222 // Connecting views with widgetScrolled SLOT |
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223 // to support simultanous vertical scrolling |
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224 connect(prevItemView, SIGNAL(scrollPositionChanged(const QPointF&)), this, |
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225 SLOT(widgetScrolled(const QPointF&))); |
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226 connect(currItemView, SIGNAL(scrollPositionChanged(const QPointF&)), this, |
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227 SLOT(widgetScrolled(const QPointF&))); |
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228 connect(nextItemView, SIGNAL(scrollPositionChanged(const QPointF&)), this, |
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229 SLOT(widgetScrolled(const QPointF&))); |
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230 |
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231 if (parentItem()) { |
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232 // Install event filters to receive events necessary for gesture handling |
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233 CalenDayContentScrollArea* scrollArea = |
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234 static_cast<CalenDayContentScrollArea*> (parentItem()); |
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235 prevItemView->installEventFilter(scrollArea); |
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236 currItemView->installEventFilter(scrollArea); |
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237 nextItemView->installEventFilter(scrollArea); |
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238 } |
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239 |
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240 // Add views to layout |
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241 add(prevItemView); |
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242 add(currItemView); |
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243 add(nextItemView); |
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244 } |
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245 |
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246 // End of File |