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1 /* |
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2 * Copyright (c) 2009 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: |
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15 * |
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16 */ |
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17 |
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18 #include <QtGlobal> |
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19 #include "hswidgetpositioningonwidgetadd.h" |
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20 #include <math.h> |
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21 #include <QLineF> |
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22 |
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23 const qreal offset = 40; //TODO: Implement this as configurable parameter |
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24 |
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25 /*! |
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26 \class HsWidgetPositioningOnWidgetAdd |
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27 \brief Defines widget positioning on widget add. |
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28 |
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29 Widget positioning on widget add sets positions for |
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30 a set of home screen widgets added from application library. |
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31 */ |
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32 |
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33 /*! |
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34 Sets the positioning \a instance as the current one. |
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35 Deletes the existing instance if present. |
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36 */ |
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37 void HsWidgetPositioningOnWidgetAdd::setInstance( |
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38 HsWidgetPositioningOnWidgetAdd *instance) |
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39 { |
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40 if (mInstance) |
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41 delete mInstance; |
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42 mInstance = instance; |
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43 } |
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44 |
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45 /*! |
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46 Returns the current positioning instance. |
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47 */ |
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48 HsWidgetPositioningOnWidgetAdd *HsWidgetPositioningOnWidgetAdd::instance() |
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49 { |
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50 return mInstance; |
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51 } |
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52 |
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53 /*! |
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54 Stores the current positioning instance. |
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55 */ |
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56 HsWidgetPositioningOnWidgetAdd *HsWidgetPositioningOnWidgetAdd::mInstance = 0; |
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57 |
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58 /*! |
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59 \class HsAnchorPointInBottomRight |
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60 \brief Diagonal widget positioning algorithm. |
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61 |
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62 Sets widget's lower right corner to follow content area's diagonal. |
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63 Widgets are positioned to certain offset to each other. |
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64 */ |
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65 QList<QRectF> HsAnchorPointInBottomRight::convert( |
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66 const QRectF &contentArea, |
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67 const QList<QRectF> &widgets) |
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68 { |
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69 QList<QRectF> toGeometries; |
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70 |
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71 //Offset for widgets' bottom right position to each other |
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72 qreal k = contentArea.height()/contentArea.width(); //slope of the diagonal |
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73 qreal offset_x = offset/(sqrt(k + 1)); |
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74 qreal offset_y = k*offset_x; |
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75 QPointF offsetPoint(offset_x, offset_y); |
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76 |
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77 QLineF diagonal(contentArea.topLeft(), contentArea.bottomRight()); |
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78 QLineF widgetRight(contentArea.center().x()+ widgets.at(0).width()/2, |
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79 contentArea.top(), |
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80 contentArea.center().x()+ widgets.at(0).width()/2, |
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81 contentArea.bottom()); |
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82 |
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83 QPointF anchorPoint; |
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84 if(QLineF::BoundedIntersection != diagonal.intersect(widgetRight, &anchorPoint)) { |
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85 return widgets; //Return original since undefined error. |
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86 //In this case widget's must be wider than the content area. |
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87 } |
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88 |
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89 //First widget to the center of the content area |
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90 foreach (QRectF g, widgets) { |
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91 g.moveBottomRight(anchorPoint); |
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92 toGeometries << g; |
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93 anchorPoint -= offsetPoint; |
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94 if(!contentArea.contains(anchorPoint)) { |
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95 anchorPoint = contentArea.bottomRight(); |
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96 } |
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97 } |
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98 return toGeometries; |
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99 } |
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100 |
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101 /*! |
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102 \class HsAnchorPointInCenter |
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103 \brief Diagonal widget positioning algorithm. |
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104 |
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105 Sets widget's center point to follow content area's diagonal. |
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106 Widgets are positioned to certain offset to each other. |
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107 */ |
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108 #ifdef COVERAGE_MEASUREMENT |
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109 #pragma CTC SKIP |
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110 #endif //COVERAGE_MEASUREMENT |
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111 QList<QRectF> HsAnchorPointInCenter::convert( |
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112 const QRectF &contentArea, |
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113 const QList<QRectF> &widgets) |
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114 { |
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115 QList<QRectF> toGeometries; |
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116 |
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117 //Offset for widgets' centers position to each other |
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118 qreal k = contentArea.height()/contentArea.width(); //slope of the diagonal |
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119 qreal offset_x = offset/(sqrt(k + 1)); |
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120 qreal offset_y = k*offset_x; |
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121 QPointF offsetPoint(offset_x, offset_y); |
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122 |
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123 //First widget to the center of the content area |
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124 QPointF anchorPoint = contentArea.center(); |
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125 foreach (QRectF g, widgets) { |
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126 g.moveCenter(anchorPoint); |
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127 toGeometries << g; |
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128 anchorPoint -= offsetPoint; |
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129 if(!contentArea.contains(anchorPoint)) { |
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130 anchorPoint = contentArea.bottomRight(); |
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131 } |
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132 } |
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133 return toGeometries; |
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134 } |
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135 |
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136 #ifdef COVERAGE_MEASUREMENT |
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137 #pragma CTC ENDSKIP |
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138 #endif //COVERAGE_MEASUREMENT |
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139 |