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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2007 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module dwt.layout.GridLayout;
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14
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15 import dwt.layout.GridData;
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16 import dwt.DWT;
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17 import dwt.graphics.Point;
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18 import dwt.graphics.Rectangle;
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19 import dwt.widgets.Control;
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20 import dwt.widgets.Composite;
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21 import dwt.widgets.Layout;
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22 import dwt.widgets.Scrollable;
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23
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24 import dwt.dwthelper.System;
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25 import dwt.dwthelper.Integer;
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26
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27 import tango.text.Util;
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28 import tango.util.Convert;
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29 import Math = tango.math.Math;
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30
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31
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32 /**
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33 * Instances of this class lay out the control children of a
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34 * <code>Composite</code> in a grid.
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35 * <p>
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36 * <code>GridLayout</code> has a number of configuration fields, and the
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37 * controls it lays out can have an associated layout data object, called
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38 * <code>GridData</code>. The power of <code>GridLayout</code> lies in the
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39 * ability to configure <code>GridData</code> for each control in the layout.
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40 * </p>
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41 * <p>
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42 * The following code creates a shell managed by a <code>GridLayout</code>
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43 * with 3 columns:
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44 * <pre>
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45 * Display display = new Display();
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46 * Shell shell = new Shell(display);
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47 * GridLayout gridLayout = new GridLayout();
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48 * gridLayout.numColumns = 3;
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49 * shell.setLayout(gridLayout);
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50 * </pre>
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51 * The <code>numColumns</code> field is the most important field in a
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52 * <code>GridLayout</code>. Widgets are laid out in columns from left
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53 * to right, and a new row is created when <code>numColumns</code> + 1
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54 * controls are added to the <code>Composite<code>.
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55 * </p>
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56 *
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57 * @see GridData
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58 */
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59 public final class GridLayout : Layout {
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60
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61 /**
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62 * numColumns specifies the number of cell columns in the layout.
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63 * If numColumns has a value less than 1, the layout will not
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64 * set the size and position of any controls.
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65 *
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66 * The default value is 1.
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67 */
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68 public int numColumns = 1;
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69
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70 /**
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71 * makeColumnsEqualWidth specifies whether all columns in the layout
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72 * will be forced to have the same width.
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73 *
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74 * The default value is false.
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75 */
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76 public bool makeColumnsEqualWidth = false;
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77
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78 /**
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79 * marginWidth specifies the number of pixels of horizontal margin
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80 * that will be placed along the left and right edges of the layout.
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81 *
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82 * The default value is 5.
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83 */
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84 public int marginWidth = 5;
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85
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86 /**
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87 * marginHeight specifies the number of pixels of vertical margin
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88 * that will be placed along the top and bottom edges of the layout.
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89 *
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90 * The default value is 5.
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91 */
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92 public int marginHeight = 5;
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93
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94 /**
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95 * marginLeft specifies the number of pixels of horizontal margin
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96 * that will be placed along the left edge of the layout.
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97 *
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98 * The default value is 0.
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99 *
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100 * @since 3.1
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101 */
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102 public int marginLeft = 0;
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103
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104 /**
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105 * marginTop specifies the number of pixels of vertical margin
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106 * that will be placed along the top edge of the layout.
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107 *
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108 * The default value is 0.
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109 *
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110 * @since 3.1
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111 */
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112 public int marginTop = 0;
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113
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114 /**
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115 * marginRight specifies the number of pixels of horizontal margin
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116 * that will be placed along the right edge of the layout.
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117 *
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118 * The default value is 0.
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119 *
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120 * @since 3.1
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121 */
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122 public int marginRight = 0;
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123
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124 /**
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125 * marginBottom specifies the number of pixels of vertical margin
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126 * that will be placed along the bottom edge of the layout.
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127 *
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128 * The default value is 0.
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129 *
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130 * @since 3.1
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131 */
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132 public int marginBottom = 0;
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133
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134 /**
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135 * horizontalSpacing specifies the number of pixels between the right
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136 * edge of one cell and the left edge of its neighbouring cell to
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137 * the right.
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138 *
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139 * The default value is 5.
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140 */
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141 public int horizontalSpacing = 5;
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142
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143 /**
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144 * verticalSpacing specifies the number of pixels between the bottom
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145 * edge of one cell and the top edge of its neighbouring cell underneath.
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146 *
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147 * The default value is 5.
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148 */
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149 public int verticalSpacing = 5;
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150
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151 /**
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152 * Constructs a new instance of this class.
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153 */
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154 public this () {}
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155
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156 /**
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157 * Constructs a new instance of this class given the
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158 * number of columns, and whether or not the columns
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159 * should be forced to have the same width.
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160 * If numColumns has a value less than 1, the layout will not
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161 * set the size and position of any controls.
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162 *
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163 * @param numColumns the number of columns in the grid
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164 * @param makeColumnsEqualWidth whether or not the columns will have equal width
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165 *
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166 * @since 2.0
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167 */
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168 public this (int numColumns, bool makeColumnsEqualWidth) {
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169 this.numColumns = numColumns;
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170 this.makeColumnsEqualWidth = makeColumnsEqualWidth;
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171 }
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172
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173 protected Point computeSize (Composite composite, int wHint, int hHint, bool flushCache_) {
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174 Point size = layout (composite, false, 0, 0, wHint, hHint, flushCache_);
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175 if (wHint !is DWT.DEFAULT) size.x = wHint;
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176 if (hHint !is DWT.DEFAULT) size.y = hHint;
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177 return size;
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178 }
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179
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180 protected bool flushCache (Control control) {
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181 Object data = control.getLayoutData ();
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182 if (data !is null) (cast(GridData) data).flushCache ();
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183 return true;
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184 }
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185
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186 GridData getData (Control [][] grid, int row, int column, int rowCount, int columnCount, bool first) {
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187 Control control = grid [row] [column];
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188 if (control !is null) {
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189 GridData data = cast(GridData) control.getLayoutData ();
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190 int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
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191 int vSpan = Math.max (1, data.verticalSpan);
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192 int i = first ? row + vSpan - 1 : row - vSpan + 1;
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193 int j = first ? column + hSpan - 1 : column - hSpan + 1;
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194 if (0 <= i && i < rowCount) {
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195 if (0 <= j && j < columnCount) {
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196 if (control is grid [i][j]) return data;
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197 }
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198 }
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199 }
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200 return null;
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201 }
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202
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203 protected void layout (Composite composite, bool flushCache_) {
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204 Rectangle rect = composite.getClientArea ();
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205 layout (composite, true, rect.x, rect.y, rect.width, rect.height, flushCache_);
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206 }
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207
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208 Point layout (Composite composite, bool move, int x, int y, int width, int height, bool flushCache_) {
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209 if (numColumns < 1) {
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210 return new Point (marginLeft + marginWidth * 2 + marginRight, marginTop + marginHeight * 2 + marginBottom);
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211 }
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212 Control [] children = composite.getChildren ();
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213 int count = 0;
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214 for (int i=0; i<children.length; i++) {
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215 Control control = children [i];
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216 GridData data = cast(GridData) control.getLayoutData ();
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217 if (data is null || !data.exclude) {
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218 children [count++] = children [i];
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219 }
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220 }
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221 if (count is 0) {
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222 return new Point (marginLeft + marginWidth * 2 + marginRight, marginTop + marginHeight * 2 + marginBottom);
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223 }
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224 for (int i=0; i<count; i++) {
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225 Control child = children [i];
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226 GridData data = cast(GridData) child.getLayoutData ();
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227 if (data is null) child.setLayoutData (data = new GridData ());
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228 if (flushCache_) data.flushCache ();
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229 data.computeSize (child, data.widthHint, data.heightHint, flushCache_);
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230 if (data.grabExcessHorizontalSpace && data.minimumWidth > 0) {
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231 if (data.cacheWidth < data.minimumWidth) {
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232 int trim = 0;
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233 //TEMPORARY CODE
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234 if ( auto sa = cast(Scrollable)child ) {
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235 Rectangle rect = sa.computeTrim (0, 0, 0, 0);
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236 trim = rect.width;
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237 } else {
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238 trim = child.getBorderWidth () * 2;
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239 }
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240 data.cacheWidth = data.cacheHeight = DWT.DEFAULT;
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241 data.computeSize (child, Math.max (0, data.minimumWidth - trim), data.heightHint, false);
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242 }
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243 }
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244 if (data.grabExcessVerticalSpace && data.minimumHeight > 0) {
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245 data.cacheHeight = Math.max (data.cacheHeight, data.minimumHeight);
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246 }
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247 }
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248
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249 /* Build the grid */
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250 int row = 0, column = 0, rowCount = 0, columnCount = numColumns;
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251 Control [][] grid = new Control [][]( 4, columnCount );
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252 for (int i=0; i<count; i++) {
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253 Control child = children [i];
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254 GridData data = cast(GridData) child.getLayoutData ();
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255 int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
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256 int vSpan = Math.max (1, data.verticalSpan);
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257 while (true) {
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258 int lastRow = row + vSpan;
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259 if (lastRow >= grid.length) {
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260 Control [][] newGrid = new Control[][]( lastRow + 4, columnCount );
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261 SimpleType!(Control[]).arraycopy (grid, 0, newGrid, 0, grid.length);
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262 grid = newGrid;
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263 }
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264 if (grid [row] is null) {
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265 grid [row] = new Control [columnCount];
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266 }
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267 while (column < columnCount && grid [row] [column] !is null) {
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268 column++;
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269 }
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270 int endCount = column + hSpan;
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271 if (endCount <= columnCount) {
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272 int index = column;
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273 while (index < endCount && grid [row] [index] is null) {
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274 index++;
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275 }
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276 if (index is endCount) break;
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277 column = index;
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278 }
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279 if (column + hSpan >= columnCount) {
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280 column = 0;
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281 row++;
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282 }
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283 }
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284 for (int j=0; j<vSpan; j++) {
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285 if (grid [row + j] is null) {
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286 grid [row + j] = new Control [columnCount];
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287 }
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288 for (int k=0; k<hSpan; k++) {
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289 grid [row + j] [column + k] = child;
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290 }
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291 }
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292 rowCount = Math.max (rowCount, row + vSpan);
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293 column += hSpan;
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294 }
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295
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296 /* Column widths */
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297 int availableWidth = width - horizontalSpacing * (columnCount - 1) - (marginLeft + marginWidth * 2 + marginRight);
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298 int expandCount = 0;
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299 int [] widths = new int [columnCount];
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300 int [] minWidths = new int [columnCount];
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301 bool [] expandColumn = new bool [columnCount];
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302 for (int j=0; j<columnCount; j++) {
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303 for (int i=0; i<rowCount; i++) {
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304 GridData data = getData (grid, i, j, rowCount, columnCount, true);
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305 if (data !is null) {
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306 int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
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307 if (hSpan is 1) {
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308 int w = data.cacheWidth + data.horizontalIndent;
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309 widths [j] = Math.max (widths [j], w);
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310 if (data.grabExcessHorizontalSpace) {
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311 if (!expandColumn [j]) expandCount++;
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312 expandColumn [j] = true;
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313 }
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314 if (!data.grabExcessHorizontalSpace || data.minimumWidth !is 0) {
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315 w = !data.grabExcessHorizontalSpace || data.minimumWidth is DWT.DEFAULT ? data.cacheWidth : data.minimumWidth;
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316 w += data.horizontalIndent;
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317 minWidths [j] = Math.max (minWidths [j], w);
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318 }
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319 }
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320 }
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321 }
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322 for (int i=0; i<rowCount; i++) {
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323 GridData data = getData (grid, i, j, rowCount, columnCount, false);
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324 if (data !is null) {
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325 int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
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326 if (hSpan > 1) {
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327 int spanWidth = 0, spanMinWidth = 0, spanExpandCount = 0;
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328 for (int k=0; k<hSpan; k++) {
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329 spanWidth += widths [j-k];
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330 spanMinWidth += minWidths [j-k];
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331 if (expandColumn [j-k]) spanExpandCount++;
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332 }
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333 if (data.grabExcessHorizontalSpace && spanExpandCount is 0) {
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334 expandCount++;
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335 expandColumn [j] = true;
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336 }
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337 int w = data.cacheWidth + data.horizontalIndent - spanWidth - (hSpan - 1) * horizontalSpacing;
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338 if (w > 0) {
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339 if (makeColumnsEqualWidth) {
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340 int equalWidth = (w + spanWidth) / hSpan;
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341 int remainder = (w + spanWidth) % hSpan, last = -1;
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342 for (int k = 0; k < hSpan; k++) {
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343 widths [last=j-k] = Math.max (equalWidth, widths [j-k]);
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344 }
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345 if (last > -1) widths [last] += remainder;
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346 } else {
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347 if (spanExpandCount is 0) {
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348 widths [j] += w;
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349 } else {
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350 int delta = w / spanExpandCount;
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351 int remainder = w % spanExpandCount, last = -1;
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352 for (int k = 0; k < hSpan; k++) {
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353 if (expandColumn [j-k]) {
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354 widths [last=j-k] += delta;
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355 }
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356 }
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357 if (last > -1) widths [last] += remainder;
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358 }
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359 }
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360 }
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361 if (!data.grabExcessHorizontalSpace || data.minimumWidth !is 0) {
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362 w = !data.grabExcessHorizontalSpace || data.minimumWidth is DWT.DEFAULT ? data.cacheWidth : data.minimumWidth;
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363 w += data.horizontalIndent - spanMinWidth - (hSpan - 1) * horizontalSpacing;
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364 if (w > 0) {
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365 if (spanExpandCount is 0) {
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366 minWidths [j] += w;
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367 } else {
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368 int delta = w / spanExpandCount;
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369 int remainder = w % spanExpandCount, last = -1;
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370 for (int k = 0; k < hSpan; k++) {
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371 if (expandColumn [j-k]) {
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372 minWidths [last=j-k] += delta;
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373 }
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374 }
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375 if (last > -1) minWidths [last] += remainder;
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376 }
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377 }
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378 }
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379 }
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380 }
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381 }
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382 }
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383 if (makeColumnsEqualWidth) {
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384 int minColumnWidth = 0;
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385 int columnWidth = 0;
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386 for (int i=0; i<columnCount; i++) {
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387 minColumnWidth = Math.max (minColumnWidth, minWidths [i]);
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388 columnWidth = Math.max (columnWidth, widths [i]);
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389 }
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390 columnWidth = width is DWT.DEFAULT || expandCount is 0 ? columnWidth : Math.max (minColumnWidth, availableWidth / columnCount);
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391 for (int i=0; i<columnCount; i++) {
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392 expandColumn [i] = expandCount > 0;
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393 widths [i] = columnWidth;
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394 }
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395 } else {
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396 if (width !is DWT.DEFAULT && expandCount > 0) {
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397 int totalWidth = 0;
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398 for (int i=0; i<columnCount; i++) {
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399 totalWidth += widths [i];
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400 }
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401 int c = expandCount;
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402 int delta = (availableWidth - totalWidth) / c;
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403 int remainder = (availableWidth - totalWidth) % c;
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404 int last = -1;
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405 while (totalWidth !is availableWidth) {
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406 for (int j=0; j<columnCount; j++) {
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407 if (expandColumn [j]) {
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408 if (widths [j] + delta > minWidths [j]) {
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409 widths [last = j] = widths [j] + delta;
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410 } else {
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411 widths [j] = minWidths [j];
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412 expandColumn [j] = false;
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413 c--;
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414 }
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415 }
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416 }
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417 if (last > -1) widths [last] += remainder;
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418
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419 for (int j=0; j<columnCount; j++) {
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420 for (int i=0; i<rowCount; i++) {
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421 GridData data = getData (grid, i, j, rowCount, columnCount, false);
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422 if (data !is null) {
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423 int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
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424 if (hSpan > 1) {
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425 if (!data.grabExcessHorizontalSpace || data.minimumWidth !is 0) {
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426 int spanWidth = 0, spanExpandCount = 0;
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427 for (int k=0; k<hSpan; k++) {
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428 spanWidth += widths [j-k];
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429 if (expandColumn [j-k]) spanExpandCount++;
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430 }
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431 int w = !data.grabExcessHorizontalSpace || data.minimumWidth is DWT.DEFAULT ? data.cacheWidth : data.minimumWidth;
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432 w += data.horizontalIndent - spanWidth - (hSpan - 1) * horizontalSpacing;
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433 if (w > 0) {
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434 if (spanExpandCount is 0) {
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435 widths [j] += w;
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436 } else {
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437 int delta2 = w / spanExpandCount;
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438 int remainder2 = w % spanExpandCount, last2 = -1;
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439 for (int k = 0; k < hSpan; k++) {
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440 if (expandColumn [j-k]) {
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441 widths [last2=j-k] += delta2;
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442 }
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443 }
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444 if (last2 > -1) widths [last2] += remainder2;
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445 }
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446 }
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447 }
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448 }
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449 }
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450 }
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451 }
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452 if (c is 0) break;
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453 totalWidth = 0;
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454 for (int i=0; i<columnCount; i++) {
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455 totalWidth += widths [i];
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456 }
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457 delta = (availableWidth - totalWidth) / c;
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458 remainder = (availableWidth - totalWidth) % c;
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459 last = -1;
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460 }
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461 }
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462 }
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463
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464 /* Wrapping */
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465 GridData [] flush = null;
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466 int flushLength = 0;
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467 if (width !is DWT.DEFAULT) {
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468 for (int j=0; j<columnCount; j++) {
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469 for (int i=0; i<rowCount; i++) {
|
|
470 GridData data = getData (grid, i, j, rowCount, columnCount, false);
|
|
471 if (data !is null) {
|
|
472 if (data.heightHint is DWT.DEFAULT) {
|
|
473 Control child = grid [i][j];
|
|
474 //TEMPORARY CODE
|
|
475 int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
|
|
476 int currentWidth = 0;
|
|
477 for (int k=0; k<hSpan; k++) {
|
|
478 currentWidth += widths [j-k];
|
|
479 }
|
|
480 currentWidth += (hSpan - 1) * horizontalSpacing - data.horizontalIndent;
|
|
481 if ((currentWidth !is data.cacheWidth && data.horizontalAlignment is DWT.FILL) || (data.cacheWidth > currentWidth)) {
|
|
482 int trim = 0;
|
|
483 if ( auto sa = cast(Scrollable)child ) {
|
|
484 Rectangle rect = sa.computeTrim (0, 0, 0, 0);
|
|
485 trim = rect.width;
|
|
486 } else {
|
|
487 trim = child.getBorderWidth () * 2;
|
|
488 }
|
|
489 data.cacheWidth = data.cacheHeight = DWT.DEFAULT;
|
|
490 data.computeSize (child, Math.max (0, currentWidth - trim), data.heightHint, false);
|
|
491 if (data.grabExcessVerticalSpace && data.minimumHeight > 0) {
|
|
492 data.cacheHeight = Math.max (data.cacheHeight, data.minimumHeight);
|
|
493 }
|
|
494 if (flush is null) flush = new GridData [count];
|
|
495 flush [flushLength++] = data;
|
|
496 }
|
|
497 }
|
|
498 }
|
|
499 }
|
|
500 }
|
|
501 }
|
|
502
|
|
503 /* Row heights */
|
|
504 int availableHeight = height - verticalSpacing * (rowCount - 1) - (marginTop + marginHeight * 2 + marginBottom);
|
|
505 expandCount = 0;
|
|
506 int [] heights = new int [rowCount];
|
|
507 int [] minHeights = new int [rowCount];
|
|
508 bool [] expandRow = new bool [rowCount];
|
|
509 for (int i=0; i<rowCount; i++) {
|
|
510 for (int j=0; j<columnCount; j++) {
|
|
511 GridData data = getData (grid, i, j, rowCount, columnCount, true);
|
|
512 if (data !is null) {
|
|
513 int vSpan = Math.max (1, Math.min (data.verticalSpan, rowCount));
|
|
514 if (vSpan is 1) {
|
|
515 int h = data.cacheHeight + data.verticalIndent;
|
|
516 heights [i] = Math.max (heights [i], h);
|
|
517 if (data.grabExcessVerticalSpace) {
|
|
518 if (!expandRow [i]) expandCount++;
|
|
519 expandRow [i] = true;
|
|
520 }
|
|
521 if (!data.grabExcessVerticalSpace || data.minimumHeight !is 0) {
|
|
522 h = !data.grabExcessVerticalSpace || data.minimumHeight is DWT.DEFAULT ? data.cacheHeight : data.minimumHeight;
|
|
523 h += data.verticalIndent;
|
|
524 minHeights [i] = Math.max (minHeights [i], h);
|
|
525 }
|
|
526 }
|
|
527 }
|
|
528 }
|
|
529 for (int j=0; j<columnCount; j++) {
|
|
530 GridData data = getData (grid, i, j, rowCount, columnCount, false);
|
|
531 if (data !is null) {
|
|
532 int vSpan = Math.max (1, Math.min (data.verticalSpan, rowCount));
|
|
533 if (vSpan > 1) {
|
|
534 int spanHeight = 0, spanMinHeight = 0, spanExpandCount = 0;
|
|
535 for (int k=0; k<vSpan; k++) {
|
|
536 spanHeight += heights [i-k];
|
|
537 spanMinHeight += minHeights [i-k];
|
|
538 if (expandRow [i-k]) spanExpandCount++;
|
|
539 }
|
|
540 if (data.grabExcessVerticalSpace && spanExpandCount is 0) {
|
|
541 expandCount++;
|
|
542 expandRow [i] = true;
|
|
543 }
|
|
544 int h = data.cacheHeight + data.verticalIndent - spanHeight - (vSpan - 1) * verticalSpacing;
|
|
545 if (h > 0) {
|
|
546 if (spanExpandCount is 0) {
|
|
547 heights [i] += h;
|
|
548 } else {
|
|
549 int delta = h / spanExpandCount;
|
|
550 int remainder = h % spanExpandCount, last = -1;
|
|
551 for (int k = 0; k < vSpan; k++) {
|
|
552 if (expandRow [i-k]) {
|
|
553 heights [last=i-k] += delta;
|
|
554 }
|
|
555 }
|
|
556 if (last > -1) heights [last] += remainder;
|
|
557 }
|
|
558 }
|
|
559 if (!data.grabExcessVerticalSpace || data.minimumHeight !is 0) {
|
|
560 h = !data.grabExcessVerticalSpace || data.minimumHeight is DWT.DEFAULT ? data.cacheHeight : data.minimumHeight;
|
|
561 h += data.verticalIndent - spanMinHeight - (vSpan - 1) * verticalSpacing;
|
|
562 if (h > 0) {
|
|
563 if (spanExpandCount is 0) {
|
|
564 minHeights [i] += h;
|
|
565 } else {
|
|
566 int delta = h / spanExpandCount;
|
|
567 int remainder = h % spanExpandCount, last = -1;
|
|
568 for (int k = 0; k < vSpan; k++) {
|
|
569 if (expandRow [i-k]) {
|
|
570 minHeights [last=i-k] += delta;
|
|
571 }
|
|
572 }
|
|
573 if (last > -1) minHeights [last] += remainder;
|
|
574 }
|
|
575 }
|
|
576 }
|
|
577 }
|
|
578 }
|
|
579 }
|
|
580 }
|
|
581 if (height !is DWT.DEFAULT && expandCount > 0) {
|
|
582 int totalHeight = 0;
|
|
583 for (int i=0; i<rowCount; i++) {
|
|
584 totalHeight += heights [i];
|
|
585 }
|
|
586 int c = expandCount;
|
|
587 int delta = (availableHeight - totalHeight) / c;
|
|
588 int remainder = (availableHeight - totalHeight) % c;
|
|
589 int last = -1;
|
|
590 while (totalHeight !is availableHeight) {
|
|
591 for (int i=0; i<rowCount; i++) {
|
|
592 if (expandRow [i]) {
|
|
593 if (heights [i] + delta > minHeights [i]) {
|
|
594 heights [last = i] = heights [i] + delta;
|
|
595 } else {
|
|
596 heights [i] = minHeights [i];
|
|
597 expandRow [i] = false;
|
|
598 c--;
|
|
599 }
|
|
600 }
|
|
601 }
|
|
602 if (last > -1) heights [last] += remainder;
|
|
603
|
|
604 for (int i=0; i<rowCount; i++) {
|
|
605 for (int j=0; j<columnCount; j++) {
|
|
606 GridData data = getData (grid, i, j, rowCount, columnCount, false);
|
|
607 if (data !is null) {
|
|
608 int vSpan = Math.max (1, Math.min (data.verticalSpan, rowCount));
|
|
609 if (vSpan > 1) {
|
|
610 if (!data.grabExcessVerticalSpace || data.minimumHeight !is 0) {
|
|
611 int spanHeight = 0, spanExpandCount = 0;
|
|
612 for (int k=0; k<vSpan; k++) {
|
|
613 spanHeight += heights [i-k];
|
|
614 if (expandRow [i-k]) spanExpandCount++;
|
|
615 }
|
|
616 int h = !data.grabExcessVerticalSpace || data.minimumHeight is DWT.DEFAULT ? data.cacheHeight : data.minimumHeight;
|
|
617 h += data.verticalIndent - spanHeight - (vSpan - 1) * verticalSpacing;
|
|
618 if (h > 0) {
|
|
619 if (spanExpandCount is 0) {
|
|
620 heights [i] += h;
|
|
621 } else {
|
|
622 int delta2 = h / spanExpandCount;
|
|
623 int remainder2 = h % spanExpandCount, last2 = -1;
|
|
624 for (int k = 0; k < vSpan; k++) {
|
|
625 if (expandRow [i-k]) {
|
|
626 heights [last2=i-k] += delta2;
|
|
627 }
|
|
628 }
|
|
629 if (last2 > -1) heights [last2] += remainder2;
|
|
630 }
|
|
631 }
|
|
632 }
|
|
633 }
|
|
634 }
|
|
635 }
|
|
636 }
|
|
637 if (c is 0) break;
|
|
638 totalHeight = 0;
|
|
639 for (int i=0; i<rowCount; i++) {
|
|
640 totalHeight += heights [i];
|
|
641 }
|
|
642 delta = (availableHeight - totalHeight) / c;
|
|
643 remainder = (availableHeight - totalHeight) % c;
|
|
644 last = -1;
|
|
645 }
|
|
646 }
|
|
647
|
|
648 /* Position the controls */
|
|
649 if (move) {
|
|
650 int gridY = y + marginTop + marginHeight;
|
|
651 for (int i=0; i<rowCount; i++) {
|
|
652 int gridX = x + marginLeft + marginWidth;
|
|
653 for (int j=0; j<columnCount; j++) {
|
|
654 GridData data = getData (grid, i, j, rowCount, columnCount, true);
|
|
655 if (data !is null) {
|
|
656 int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
|
|
657 int vSpan = Math.max (1, data.verticalSpan);
|
|
658 int cellWidth = 0, cellHeight = 0;
|
|
659 for (int k=0; k<hSpan; k++) {
|
|
660 cellWidth += widths [j+k];
|
|
661 }
|
|
662 for (int k=0; k<vSpan; k++) {
|
|
663 cellHeight += heights [i+k];
|
|
664 }
|
|
665 cellWidth += horizontalSpacing * (hSpan - 1);
|
|
666 int childX = gridX + data.horizontalIndent;
|
|
667 int childWidth = Math.min (data.cacheWidth, cellWidth);
|
|
668 switch (data.horizontalAlignment) {
|
|
669 case DWT.CENTER:
|
|
670 case GridData.CENTER:
|
|
671 childX += Math.max (0, (cellWidth - data.horizontalIndent - childWidth) / 2);
|
|
672 break;
|
|
673 case DWT.RIGHT:
|
|
674 case DWT.END:
|
|
675 case GridData.END:
|
|
676 childX += Math.max (0, cellWidth - data.horizontalIndent - childWidth);
|
|
677 break;
|
|
678 case DWT.FILL:
|
|
679 childWidth = cellWidth - data.horizontalIndent;
|
|
680 break;
|
|
681 default:
|
|
682 }
|
|
683 cellHeight += verticalSpacing * (vSpan - 1);
|
|
684 int childY = gridY + data.verticalIndent;
|
|
685 int childHeight = Math.min (data.cacheHeight, cellHeight);
|
|
686 switch (data.verticalAlignment) {
|
|
687 case DWT.CENTER:
|
|
688 case GridData.CENTER:
|
|
689 childY += Math.max (0, (cellHeight - data.verticalIndent - childHeight) / 2);
|
|
690 break;
|
|
691 case DWT.BOTTOM:
|
|
692 case DWT.END:
|
|
693 case GridData.END:
|
|
694 childY += Math.max (0, cellHeight - data.verticalIndent - childHeight);
|
|
695 break;
|
|
696 case DWT.FILL:
|
|
697 childHeight = cellHeight - data.verticalIndent;
|
|
698 break;
|
|
699 default:
|
|
700 }
|
|
701 Control child = grid [i][j];
|
|
702 if (child !is null) {
|
|
703 child.setBounds (childX, childY, childWidth, childHeight);
|
|
704 }
|
|
705 }
|
|
706 gridX += widths [j] + horizontalSpacing;
|
|
707 }
|
|
708 gridY += heights [i] + verticalSpacing;
|
|
709 }
|
|
710 }
|
|
711
|
|
712 // clean up cache
|
|
713 for (int i = 0; i < flushLength; i++) {
|
|
714 flush [i].cacheWidth = flush [i].cacheHeight = -1;
|
|
715 }
|
|
716
|
|
717 int totalDefaultWidth = 0;
|
|
718 int totalDefaultHeight = 0;
|
|
719 for (int i=0; i<columnCount; i++) {
|
|
720 totalDefaultWidth += widths [i];
|
|
721 }
|
|
722 for (int i=0; i<rowCount; i++) {
|
|
723 totalDefaultHeight += heights [i];
|
|
724 }
|
|
725 totalDefaultWidth += horizontalSpacing * (columnCount - 1) + marginLeft + marginWidth * 2 + marginRight;
|
|
726 totalDefaultHeight += verticalSpacing * (rowCount - 1) + marginTop + marginHeight * 2 + marginBottom;
|
|
727 return new Point (totalDefaultWidth, totalDefaultHeight);
|
|
728 }
|
|
729
|
|
730 char[] getName () {
|
|
731 char[] string = this.classinfo.name;
|
|
732 int index = locatePrior( string, '.');
|
|
733 if (index is string.length ) return string;
|
|
734 return string[ index + 1 .. string.length ];
|
|
735 }
|
|
736
|
|
737 /**
|
|
738 * Returns a string containing a concise, human-readable
|
|
739 * description of the receiver.
|
|
740 *
|
|
741 * @return a string representation of the layout
|
|
742 */
|
|
743 public char[] toString () {
|
|
744 char[] string = getName ()~" {";
|
|
745 if (numColumns !is 1) string ~= "numColumns="~to!(char[])(numColumns)~" ";
|
|
746 if (makeColumnsEqualWidth) string ~= "makeColumnsEqualWidth="~to!(char[])(makeColumnsEqualWidth)~" ";
|
|
747 if (marginWidth !is 0) string ~= "marginWidth="~to!(char[])(marginWidth)~" ";
|
|
748 if (marginHeight !is 0) string ~= "marginHeight="~to!(char[])(marginHeight)~" ";
|
|
749 if (marginLeft !is 0) string ~= "marginLeft="~to!(char[])(marginLeft)~" ";
|
|
750 if (marginRight !is 0) string ~= "marginRight="~to!(char[])(marginRight)~" ";
|
|
751 if (marginTop !is 0) string ~= "marginTop="~to!(char[])(marginTop)~" ";
|
|
752 if (marginBottom !is 0) string ~= "marginBottom="~to!(char[])(marginBottom)~" ";
|
|
753 if (horizontalSpacing !is 0) string ~= "horizontalSpacing="~to!(char[])(horizontalSpacing)~" ";
|
|
754 if (verticalSpacing !is 0) string ~= "verticalSpacing="~to!(char[])(verticalSpacing)~" ";
|
|
755 string = string.trim();
|
|
756 string ~= "}";
|
|
757 return string;
|
|
758 }
|
|
759 }
|