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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the QtDeclarative module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:BSD$ |
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10 ** You may use this file under the terms of the BSD license as follows: |
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11 ** |
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12 ** "Redistribution and use in source and binary forms, with or without |
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13 ** modification, are permitted provided that the following conditions are |
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14 ** met: |
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15 ** * Redistributions of source code must retain the above copyright |
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16 ** notice, this list of conditions and the following disclaimer. |
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17 ** * Redistributions in binary form must reproduce the above copyright |
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18 ** notice, this list of conditions and the following disclaimer in |
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19 ** the documentation and/or other materials provided with the |
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20 ** distribution. |
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21 ** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor |
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22 ** the names of its contributors may be used to endorse or promote |
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23 ** products derived from this software without specific prior written |
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24 ** permission. |
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25 ** |
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26 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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27 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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28 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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29 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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30 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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31 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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32 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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33 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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34 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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35 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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36 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." |
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37 ** $QT_END_LICENSE$ |
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38 ** |
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39 ****************************************************************************/ |
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40 |
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41 #include "gridlayout.h" |
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42 |
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43 #include <QGraphicsWidget> |
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44 #include <QDebug> |
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45 |
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46 GridLayoutAttached::GridLayoutAttached(QObject *parent) |
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47 : QObject(parent), m_row(-1), m_column(-1), m_rowspan(1), m_colspan(1), m_alignment(-1), m_rowStretch(-1), |
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48 m_colStretch(-1), m_rowSpacing(-1), m_colSpacing(-1), m_rowPrefHeight(-1), m_rowMaxHeight(-1), m_rowMinHeight(-1), |
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49 m_rowFixHeight(-1), m_colPrefwidth(-1), m_colMaxwidth(-1), m_colMinwidth(-1), m_colFixwidth(-1) |
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50 { |
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51 } |
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52 |
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53 void GridLayoutAttached::setAlignment(Qt::Alignment a) |
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54 { |
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55 if (m_alignment != a) { |
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56 m_alignment = a; |
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57 emit alignmentChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), m_alignment); |
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58 } |
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59 } |
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60 |
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61 QHash<QGraphicsLayoutItem*, GridLayoutAttached*> GraphicsGridLayoutObject::attachedProperties; |
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62 |
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63 GraphicsGridLayoutObject::GraphicsGridLayoutObject(QObject *parent) |
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64 : QObject(parent) |
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65 { |
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66 } |
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67 |
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68 GraphicsGridLayoutObject::~GraphicsGridLayoutObject() |
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69 { |
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70 } |
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71 |
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72 void GraphicsGridLayoutObject::addWidget(QGraphicsWidget *widget) |
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73 { |
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74 //use attached properties |
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75 if (QObject *obj = attachedProperties.value(qobject_cast<QGraphicsLayoutItem*>(widget))) { |
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76 int row = static_cast<GridLayoutAttached *>(obj)->row(); |
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77 int column = static_cast<GridLayoutAttached *>(obj)->column(); |
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78 int rowSpan = static_cast<GridLayoutAttached *>(obj)->rowSpan(); |
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79 int columnSpan = static_cast<GridLayoutAttached *>(obj)->columnSpan(); |
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80 if (row == -1 || column == -1) { |
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81 qWarning() << "Must set row and column for an item in a grid layout"; |
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82 return; |
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83 } |
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84 addItem(widget, row, column, rowSpan, columnSpan); |
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85 } |
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86 } |
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87 |
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88 void GraphicsGridLayoutObject::addLayoutItem(QGraphicsLayoutItem *item) |
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89 { |
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90 //use attached properties |
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91 if (GridLayoutAttached *obj = attachedProperties.value(item)) { |
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92 int row = obj->row(); |
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93 int column = obj->column(); |
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94 int rowSpan = obj->rowSpan(); |
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95 int columnSpan = obj->columnSpan(); |
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96 Qt::Alignment alignment = obj->alignment(); |
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97 |
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98 if (row == -1 || column == -1) { |
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99 qWarning() << "Must set row and column for an item in a grid layout"; |
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100 return; |
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101 } |
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102 |
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103 if (obj->rowSpacing() != -1) |
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104 setRowSpacing(row, obj->rowSpacing()); |
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105 if (obj->columnSpacing() != -1) |
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106 setColumnSpacing(column, obj->columnSpacing()); |
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107 if (obj->rowStretchFactor() != -1) |
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108 setRowStretchFactor(row, obj->rowStretchFactor()); |
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109 if (obj->columnStretchFactor() != -1) |
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110 setColumnStretchFactor(column, obj->columnStretchFactor()); |
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111 if (obj->rowPreferredHeight() != -1) |
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112 setRowPreferredHeight(row, obj->rowPreferredHeight()); |
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113 if (obj->rowMaximumHeight() != -1) |
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114 setRowMaximumHeight(row, obj->rowMaximumHeight()); |
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115 if (obj->rowMinimumHeight() != -1) |
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116 setRowMinimumHeight(row, obj->rowMinimumHeight()); |
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117 if (obj->rowFixedHeight() != -1) |
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118 setRowFixedHeight(row, obj->rowFixedHeight()); |
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119 if (obj->columnPreferredWidth() != -1) |
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120 setColumnPreferredWidth(row, obj->columnPreferredWidth()); |
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121 if (obj->columnMaximumWidth() != -1) |
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122 setColumnMaximumWidth(row, obj->columnMaximumWidth()); |
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123 if (obj->columnMinimumWidth() != -1) |
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124 setColumnMinimumWidth(row, obj->columnMinimumWidth()); |
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125 if (obj->columnFixedWidth() != -1) |
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126 setColumnFixedWidth(row, obj->columnFixedWidth()); |
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127 |
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128 addItem(item, row, column, rowSpan, columnSpan); |
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129 |
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130 if (alignment != -1) |
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131 setAlignment(item, alignment); |
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132 QObject::connect(obj, SIGNAL(alignmentChanged(QGraphicsLayoutItem*, Qt::Alignment)), |
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133 this, SLOT(updateAlignment(QGraphicsLayoutItem*, Qt::Alignment))); |
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134 } |
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135 } |
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136 |
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137 void GraphicsGridLayoutObject::removeAt(int index) |
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138 { |
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139 QGraphicsLayoutItem *item = itemAt(index); |
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140 if (item) { |
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141 GridLayoutAttached *obj = attachedProperties.value(item); |
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142 obj->disconnect(this); |
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143 attachedProperties.remove(item); |
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144 } |
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145 QGraphicsGridLayout::removeAt(index); |
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146 } |
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147 |
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148 void GraphicsGridLayoutObject::clearChildren() |
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149 { |
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150 // do not delete the removed items; they will be deleted by the QML engine |
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151 while (count() > 0) |
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152 removeAt(count()-1); |
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153 } |
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154 |
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155 qreal GraphicsGridLayoutObject::spacing() const |
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156 { |
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157 if (verticalSpacing() == horizontalSpacing()) |
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158 return verticalSpacing(); |
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159 return -1; |
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160 } |
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161 |
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162 qreal GraphicsGridLayoutObject::contentsMargin() const |
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163 { |
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164 qreal a, b, c, d; |
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165 getContentsMargins(&a, &b, &c, &d); |
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166 if (a == b && a == c && a == d) |
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167 return a; |
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168 return -1; |
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169 } |
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170 |
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171 void GraphicsGridLayoutObject::setContentsMargin(qreal m) |
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172 { |
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173 setContentsMargins(m, m, m, m); |
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174 } |
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175 |
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176 void GraphicsGridLayoutObject::updateAlignment(QGraphicsLayoutItem *item, Qt::Alignment alignment) |
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177 { |
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178 QGraphicsGridLayout::setAlignment(item, alignment); |
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179 } |
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180 |
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181 GridLayoutAttached *GraphicsGridLayoutObject::qmlAttachedProperties(QObject *obj) |
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182 { |
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183 GridLayoutAttached *rv = new GridLayoutAttached(obj); |
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184 if (qobject_cast<QGraphicsLayoutItem*>(obj)) |
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185 attachedProperties.insert(qobject_cast<QGraphicsLayoutItem*>(obj), rv); |
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186 return rv; |
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187 } |
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188 |