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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2008 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 org.eclipse.swt.layout.GridLayout;
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14
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15 import org.eclipse.swt.layout.GridData;
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16 import org.eclipse.swt.SWT;
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17 import org.eclipse.swt.graphics.Point;
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18 import org.eclipse.swt.graphics.Rectangle;
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19 import org.eclipse.swt.widgets.Control;
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20 import org.eclipse.swt.widgets.Composite;
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21 import org.eclipse.swt.widgets.Layout;
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22 import org.eclipse.swt.widgets.Scrollable;
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23
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24
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48
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25 import java.lang.all;
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26 version(Tango){
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25
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27 import tango.util.Convert;
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48
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28 } else { // Phobos
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29 }
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25
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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 * @see <a href="http://www.eclipse.org/swt/snippets/#gridlayout">GridLayout snippets</a>
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59 * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: LayoutExample</a>
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60 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
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61 */
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62 public final class GridLayout : Layout {
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63
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64 /**
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65 * numColumns specifies the number of cell columns in the layout.
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66 * If numColumns has a value less than 1, the layout will not
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67 * set the size and position of any controls.
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68 *
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69 * The default value is 1.
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70 */
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71 public int numColumns = 1;
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72
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73 /**
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74 * makeColumnsEqualWidth specifies whether all columns in the layout
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75 * will be forced to have the same width.
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76 *
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77 * The default value is false.
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78 */
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79 public bool makeColumnsEqualWidth = false;
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80
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81 /**
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82 * marginWidth specifies the number of pixels of horizontal margin
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83 * that will be placed along the left and right edges of the layout.
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84 *
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85 * The default value is 5.
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86 */
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87 public int marginWidth = 5;
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88
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89 /**
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90 * marginHeight specifies the number of pixels of vertical margin
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91 * that will be placed along the top and bottom edges of the layout.
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92 *
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93 * The default value is 5.
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94 */
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95 public int marginHeight = 5;
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96
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97 /**
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98 * marginLeft specifies the number of pixels of horizontal margin
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99 * that will be placed along the left edge of the layout.
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100 *
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101 * The default value is 0.
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102 *
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103 * @since 3.1
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104 */
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105 public int marginLeft = 0;
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106
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107 /**
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108 * marginTop specifies the number of pixels of vertical margin
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109 * that will be placed along the top edge of the layout.
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110 *
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111 * The default value is 0.
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112 *
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113 * @since 3.1
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114 */
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115 public int marginTop = 0;
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116
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117 /**
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118 * marginRight specifies the number of pixels of horizontal margin
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119 * that will be placed along the right edge of the layout.
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120 *
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121 * The default value is 0.
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122 *
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123 * @since 3.1
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124 */
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125 public int marginRight = 0;
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126
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127 /**
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128 * marginBottom specifies the number of pixels of vertical margin
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129 * that will be placed along the bottom edge of the layout.
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130 *
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131 * The default value is 0.
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132 *
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133 * @since 3.1
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134 */
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135 public int marginBottom = 0;
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136
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137 /**
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138 * horizontalSpacing specifies the number of pixels between the right
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139 * edge of one cell and the left edge of its neighbouring cell to
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140 * the right.
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141 *
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142 * The default value is 5.
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143 */
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144 public int horizontalSpacing = 5;
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145
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146 /**
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147 * verticalSpacing specifies the number of pixels between the bottom
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148 * edge of one cell and the top edge of its neighbouring cell underneath.
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149 *
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150 * The default value is 5.
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151 */
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152 public int verticalSpacing = 5;
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153
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154 /**
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155 * Constructs a new instance of this class.
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156 */
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157 public this () {}
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158
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159 /**
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160 * Constructs a new instance of this class given the
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161 * number of columns, and whether or not the columns
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162 * should be forced to have the same width.
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163 * If numColumns has a value less than 1, the layout will not
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164 * set the size and position of any controls.
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165 *
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166 * @param numColumns the number of columns in the grid
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167 * @param makeColumnsEqualWidth whether or not the columns will have equal width
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168 *
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169 * @since 2.0
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170 */
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171 public this (int numColumns, bool makeColumnsEqualWidth) {
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172 this.numColumns = numColumns;
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173 this.makeColumnsEqualWidth = makeColumnsEqualWidth;
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174 }
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175
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176 override protected Point computeSize (Composite composite, int wHint, int hHint, bool flushCache_) {
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177 Point size = layout (composite, false, 0, 0, wHint, hHint, flushCache_);
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178 if (wHint !is SWT.DEFAULT) size.x = wHint;
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179 if (hHint !is SWT.DEFAULT) size.y = hHint;
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180 return size;
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181 }
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182
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183 override protected bool flushCache (Control control) {
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184 Object data = control.getLayoutData ();
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185 if (data !is null) (cast(GridData) data).flushCache ();
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186 return true;
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187 }
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188
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189 GridData getData (Control [][] grid, int row, int column, int rowCount, int columnCount, bool first) {
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190 Control control = grid [row] [column];
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191 if (control !is null) {
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192 GridData data = cast(GridData) control.getLayoutData ();
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193 int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
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194 int vSpan = Math.max (1, data.verticalSpan);
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195 int i = first ? row + vSpan - 1 : row - vSpan + 1;
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196 int j = first ? column + hSpan - 1 : column - hSpan + 1;
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197 if (0 <= i && i < rowCount) {
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198 if (0 <= j && j < columnCount) {
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199 if (control is grid [i][j]) return data;
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200 }
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201 }
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202 }
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203 return null;
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204 }
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205
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206 override protected void layout (Composite composite, bool flushCache_) {
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207 Rectangle rect = composite.getClientArea ();
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208 layout (composite, true, rect.x, rect.y, rect.width, rect.height, flushCache_);
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209 }
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210
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211 Point layout (Composite composite, bool move, int x, int y, int width, int height, bool flushCache_) {
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212 if (numColumns < 1) {
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213 return new Point (marginLeft + marginWidth * 2 + marginRight, marginTop + marginHeight * 2 + marginBottom);
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214 }
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215 Control [] children = composite.getChildren ();
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216 int count = 0;
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217 for (int i=0; i<children.length; i++) {
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218 Control control = children [i];
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219 GridData data = cast(GridData) control.getLayoutData ();
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220 if (data is null || !data.exclude) {
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221 children [count++] = children [i];
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222 }
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223 }
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224 if (count is 0) {
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225 return new Point (marginLeft + marginWidth * 2 + marginRight, marginTop + marginHeight * 2 + marginBottom);
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226 }
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227 for (int i=0; i<count; i++) {
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228 Control child = children [i];
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229 GridData data = cast(GridData) child.getLayoutData ();
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230 if (data is null) child.setLayoutData (data = new GridData ());
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231 if (flushCache_) data.flushCache ();
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232 data.computeSize (child, data.widthHint, data.heightHint, flushCache_);
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233 if (data.grabExcessHorizontalSpace && data.minimumWidth > 0) {
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234 if (data.cacheWidth < data.minimumWidth) {
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235 int trim = 0;
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236 //TEMPORARY CODE
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237 if ( auto sa = cast(Scrollable)child ) {
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238 Rectangle rect = sa.computeTrim (0, 0, 0, 0);
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239 trim = rect.width;
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240 } else {
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241 trim = child.getBorderWidth () * 2;
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242 }
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243 data.cacheWidth = data.cacheHeight = SWT.DEFAULT;
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244 data.computeSize (child, Math.max (0, data.minimumWidth - trim), data.heightHint, false);
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245 }
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246 }
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247 if (data.grabExcessVerticalSpace && data.minimumHeight > 0) {
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248 data.cacheHeight = Math.max (data.cacheHeight, data.minimumHeight);
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249 }
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250 }
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251
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252 /* Build the grid */
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253 int row = 0, column = 0, rowCount = 0, columnCount = numColumns;
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254 Control [][] grid = new Control [][]( 4, columnCount );
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255 for (int i=0; i<count; i++) {
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256 Control child = children [i];
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257 GridData data = cast(GridData) child.getLayoutData ();
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258 int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
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259 int vSpan = Math.max (1, data.verticalSpan);
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260 while (true) {
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261 int lastRow = row + vSpan;
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262 if (lastRow >= grid.length) {
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263 Control [][] newGrid = new Control[][]( lastRow + 4, columnCount );
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264 SimpleType!(Control[]).arraycopy (grid, 0, newGrid, 0, grid.length);
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265 grid = newGrid;
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266 }
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267 if (grid [row] is null) {
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268 grid [row] = new Control [columnCount];
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269 }
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270 while (column < columnCount && grid [row] [column] !is null) {
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271 column++;
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272 }
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273 int endCount = column + hSpan;
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274 if (endCount <= columnCount) {
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275 int index = column;
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276 while (index < endCount && grid [row] [index] is null) {
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277 index++;
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278 }
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279 if (index is endCount) break;
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280 column = index;
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281 }
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282 if (column + hSpan >= columnCount) {
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283 column = 0;
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284 row++;
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285 }
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286 }
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287 for (int j=0; j<vSpan; j++) {
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288 if (grid [row + j] is null) {
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289 grid [row + j] = new Control [columnCount];
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290 }
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291 for (int k=0; k<hSpan; k++) {
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292 grid [row + j] [column + k] = child;
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293 }
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294 }
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295 rowCount = Math.max (rowCount, row + vSpan);
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296 column += hSpan;
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297 }
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298
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299 /* Column widths */
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300 int availableWidth = width - horizontalSpacing * (columnCount - 1) - (marginLeft + marginWidth * 2 + marginRight);
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301 int expandCount = 0;
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302 int [] widths = new int [columnCount];
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303 int [] minWidths = new int [columnCount];
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304 bool [] expandColumn = new bool [columnCount];
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305 for (int j=0; j<columnCount; j++) {
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306 for (int i=0; i<rowCount; i++) {
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307 GridData data = getData (grid, i, j, rowCount, columnCount, true);
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308 if (data !is null) {
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309 int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
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310 if (hSpan is 1) {
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311 int w = data.cacheWidth + data.horizontalIndent;
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312 widths [j] = Math.max (widths [j], w);
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313 if (data.grabExcessHorizontalSpace) {
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314 if (!expandColumn [j]) expandCount++;
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315 expandColumn [j] = true;
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316 }
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317 if (!data.grabExcessHorizontalSpace || data.minimumWidth !is 0) {
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318 w = !data.grabExcessHorizontalSpace || data.minimumWidth is SWT.DEFAULT ? data.cacheWidth : data.minimumWidth;
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319 w += data.horizontalIndent;
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320 minWidths [j] = Math.max (minWidths [j], w);
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321 }
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322 }
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323 }
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324 }
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325 for (int i=0; i<rowCount; i++) {
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326 GridData data = getData (grid, i, j, rowCount, columnCount, false);
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327 if (data !is null) {
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328 int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
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329 if (hSpan > 1) {
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330 int spanWidth = 0, spanMinWidth = 0, spanExpandCount = 0;
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331 for (int k=0; k<hSpan; k++) {
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332 spanWidth += widths [j-k];
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333 spanMinWidth += minWidths [j-k];
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334 if (expandColumn [j-k]) spanExpandCount++;
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335 }
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336 if (data.grabExcessHorizontalSpace && spanExpandCount is 0) {
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337 expandCount++;
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338 expandColumn [j] = true;
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339 }
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340 int w = data.cacheWidth + data.horizontalIndent - spanWidth - (hSpan - 1) * horizontalSpacing;
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341 if (w > 0) {
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342 if (makeColumnsEqualWidth) {
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343 int equalWidth = (w + spanWidth) / hSpan;
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344 int remainder = (w + spanWidth) % hSpan, last = -1;
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345 for (int k = 0; k < hSpan; k++) {
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346 widths [last=j-k] = Math.max (equalWidth, widths [j-k]);
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347 }
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348 if (last > -1) widths [last] += remainder;
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349 } else {
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350 if (spanExpandCount is 0) {
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351 widths [j] += w;
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352 } else {
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353 int delta = w / spanExpandCount;
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354 int remainder = w % spanExpandCount, last = -1;
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355 for (int k = 0; k < hSpan; k++) {
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356 if (expandColumn [j-k]) {
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357 widths [last=j-k] += delta;
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358 }
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359 }
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360 if (last > -1) widths [last] += remainder;
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361 }
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362 }
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363 }
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364 if (!data.grabExcessHorizontalSpace || data.minimumWidth !is 0) {
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365 w = !data.grabExcessHorizontalSpace || data.minimumWidth is SWT.DEFAULT ? data.cacheWidth : data.minimumWidth;
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366 w += data.horizontalIndent - spanMinWidth - (hSpan - 1) * horizontalSpacing;
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367 if (w > 0) {
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368 if (spanExpandCount is 0) {
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369 minWidths [j] += w;
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370 } else {
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371 int delta = w / spanExpandCount;
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372 int remainder = w % spanExpandCount, last = -1;
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373 for (int k = 0; k < hSpan; k++) {
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374 if (expandColumn [j-k]) {
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375 minWidths [last=j-k] += delta;
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376 }
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377 }
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378 if (last > -1) minWidths [last] += remainder;
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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 }
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384 }
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385 }
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386 if (makeColumnsEqualWidth) {
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387 int minColumnWidth = 0;
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388 int columnWidth = 0;
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389 for (int i=0; i<columnCount; i++) {
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390 minColumnWidth = Math.max (minColumnWidth, minWidths [i]);
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391 columnWidth = Math.max (columnWidth, widths [i]);
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392 }
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393 columnWidth = width is SWT.DEFAULT || expandCount is 0 ? columnWidth : Math.max (minColumnWidth, availableWidth / columnCount);
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394 for (int i=0; i<columnCount; i++) {
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395 expandColumn [i] = expandCount > 0;
|
|
|
396 widths [i] = columnWidth;
|
|
|
397 }
|
|
|
398 } else {
|
|
|
399 if (width !is SWT.DEFAULT && expandCount > 0) {
|
|
|
400 int totalWidth = 0;
|
|
|
401 for (int i=0; i<columnCount; i++) {
|
|
|
402 totalWidth += widths [i];
|
|
|
403 }
|
|
|
404 int c = expandCount;
|
|
|
405 int delta = (availableWidth - totalWidth) / c;
|
|
|
406 int remainder = (availableWidth - totalWidth) % c;
|
|
|
407 int last = -1;
|
|
|
408 while (totalWidth !is availableWidth) {
|
|
|
409 for (int j=0; j<columnCount; j++) {
|
|
|
410 if (expandColumn [j]) {
|
|
|
411 if (widths [j] + delta > minWidths [j]) {
|
|
|
412 widths [last = j] = widths [j] + delta;
|
|
|
413 } else {
|
|
|
414 widths [j] = minWidths [j];
|
|
|
415 expandColumn [j] = false;
|
|
|
416 c--;
|
|
|
417 }
|
|
|
418 }
|
|
|
419 }
|
|
|
420 if (last > -1) widths [last] += remainder;
|
|
|
421
|
|
|
422 for (int j=0; j<columnCount; j++) {
|
|
|
423 for (int i=0; i<rowCount; i++) {
|
|
|
424 GridData data = getData (grid, i, j, rowCount, columnCount, false);
|
|
|
425 if (data !is null) {
|
|
|
426 int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
|
|
|
427 if (hSpan > 1) {
|
|
|
428 if (!data.grabExcessHorizontalSpace || data.minimumWidth !is 0) {
|
|
|
429 int spanWidth = 0, spanExpandCount = 0;
|
|
|
430 for (int k=0; k<hSpan; k++) {
|
|
|
431 spanWidth += widths [j-k];
|
|
|
432 if (expandColumn [j-k]) spanExpandCount++;
|
|
|
433 }
|
|
|
434 int w = !data.grabExcessHorizontalSpace || data.minimumWidth is SWT.DEFAULT ? data.cacheWidth : data.minimumWidth;
|
|
|
435 w += data.horizontalIndent - spanWidth - (hSpan - 1) * horizontalSpacing;
|
|
|
436 if (w > 0) {
|
|
|
437 if (spanExpandCount is 0) {
|
|
|
438 widths [j] += w;
|
|
|
439 } else {
|
|
|
440 int delta2 = w / spanExpandCount;
|
|
|
441 int remainder2 = w % spanExpandCount, last2 = -1;
|
|
|
442 for (int k = 0; k < hSpan; k++) {
|
|
|
443 if (expandColumn [j-k]) {
|
|
|
444 widths [last2=j-k] += delta2;
|
|
|
445 }
|
|
|
446 }
|
|
|
447 if (last2 > -1) widths [last2] += remainder2;
|
|
|
448 }
|
|
|
449 }
|
|
|
450 }
|
|
|
451 }
|
|
|
452 }
|
|
|
453 }
|
|
|
454 }
|
|
|
455 if (c is 0) break;
|
|
|
456 totalWidth = 0;
|
|
|
457 for (int i=0; i<columnCount; i++) {
|
|
|
458 totalWidth += widths [i];
|
|
|
459 }
|
|
|
460 delta = (availableWidth - totalWidth) / c;
|
|
|
461 remainder = (availableWidth - totalWidth) % c;
|
|
|
462 last = -1;
|
|
|
463 }
|
|
|
464 }
|
|
|
465 }
|
|
|
466
|
|
|
467 /* Wrapping */
|
|
|
468 GridData [] flush = null;
|
|
|
469 int flushLength = 0;
|
|
|
470 if (width !is SWT.DEFAULT) {
|
|
|
471 for (int j=0; j<columnCount; j++) {
|
|
|
472 for (int i=0; i<rowCount; i++) {
|
|
|
473 GridData data = getData (grid, i, j, rowCount, columnCount, false);
|
|
|
474 if (data !is null) {
|
|
|
475 if (data.heightHint is SWT.DEFAULT) {
|
|
|
476 Control child = grid [i][j];
|
|
|
477 //TEMPORARY CODE
|
|
|
478 int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
|
|
|
479 int currentWidth = 0;
|
|
|
480 for (int k=0; k<hSpan; k++) {
|
|
|
481 currentWidth += widths [j-k];
|
|
|
482 }
|
|
|
483 currentWidth += (hSpan - 1) * horizontalSpacing - data.horizontalIndent;
|
|
|
484 if ((currentWidth !is data.cacheWidth && data.horizontalAlignment is SWT.FILL) || (data.cacheWidth > currentWidth)) {
|
|
|
485 int trim = 0;
|
|
|
486 if ( auto sa = cast(Scrollable)child ) {
|
|
|
487 Rectangle rect = sa.computeTrim (0, 0, 0, 0);
|
|
|
488 trim = rect.width;
|
|
|
489 } else {
|
|
|
490 trim = child.getBorderWidth () * 2;
|
|
|
491 }
|
|
|
492 data.cacheWidth = data.cacheHeight = SWT.DEFAULT;
|
|
|
493 data.computeSize (child, Math.max (0, currentWidth - trim), data.heightHint, false);
|
|
|
494 if (data.grabExcessVerticalSpace && data.minimumHeight > 0) {
|
|
|
495 data.cacheHeight = Math.max (data.cacheHeight, data.minimumHeight);
|
|
|
496 }
|
|
|
497 if (flush is null) flush = new GridData [count];
|
|
|
498 flush [flushLength++] = data;
|
|
|
499 }
|
|
|
500 }
|
|
|
501 }
|
|
|
502 }
|
|
|
503 }
|
|
|
504 }
|
|
|
505
|
|
|
506 /* Row heights */
|
|
|
507 int availableHeight = height - verticalSpacing * (rowCount - 1) - (marginTop + marginHeight * 2 + marginBottom);
|
|
|
508 expandCount = 0;
|
|
|
509 int [] heights = new int [rowCount];
|
|
|
510 int [] minHeights = new int [rowCount];
|
|
|
511 bool [] expandRow = new bool [rowCount];
|
|
|
512 for (int i=0; i<rowCount; i++) {
|
|
|
513 for (int j=0; j<columnCount; j++) {
|
|
|
514 GridData data = getData (grid, i, j, rowCount, columnCount, true);
|
|
|
515 if (data !is null) {
|
|
|
516 int vSpan = Math.max (1, Math.min (data.verticalSpan, rowCount));
|
|
|
517 if (vSpan is 1) {
|
|
|
518 int h = data.cacheHeight + data.verticalIndent;
|
|
|
519 heights [i] = Math.max (heights [i], h);
|
|
|
520 if (data.grabExcessVerticalSpace) {
|
|
|
521 if (!expandRow [i]) expandCount++;
|
|
|
522 expandRow [i] = true;
|
|
|
523 }
|
|
|
524 if (!data.grabExcessVerticalSpace || data.minimumHeight !is 0) {
|
|
|
525 h = !data.grabExcessVerticalSpace || data.minimumHeight is SWT.DEFAULT ? data.cacheHeight : data.minimumHeight;
|
|
|
526 h += data.verticalIndent;
|
|
|
527 minHeights [i] = Math.max (minHeights [i], h);
|
|
|
528 }
|
|
|
529 }
|
|
|
530 }
|
|
|
531 }
|
|
|
532 for (int j=0; j<columnCount; j++) {
|
|
|
533 GridData data = getData (grid, i, j, rowCount, columnCount, false);
|
|
|
534 if (data !is null) {
|
|
|
535 int vSpan = Math.max (1, Math.min (data.verticalSpan, rowCount));
|
|
|
536 if (vSpan > 1) {
|
|
|
537 int spanHeight = 0, spanMinHeight = 0, spanExpandCount = 0;
|
|
|
538 for (int k=0; k<vSpan; k++) {
|
|
|
539 spanHeight += heights [i-k];
|
|
|
540 spanMinHeight += minHeights [i-k];
|
|
|
541 if (expandRow [i-k]) spanExpandCount++;
|
|
|
542 }
|
|
|
543 if (data.grabExcessVerticalSpace && spanExpandCount is 0) {
|
|
|
544 expandCount++;
|
|
|
545 expandRow [i] = true;
|
|
|
546 }
|
|
|
547 int h = data.cacheHeight + data.verticalIndent - spanHeight - (vSpan - 1) * verticalSpacing;
|
|
|
548 if (h > 0) {
|
|
|
549 if (spanExpandCount is 0) {
|
|
|
550 heights [i] += h;
|
|
|
551 } else {
|
|
|
552 int delta = h / spanExpandCount;
|
|
|
553 int remainder = h % spanExpandCount, last = -1;
|
|
|
554 for (int k = 0; k < vSpan; k++) {
|
|
|
555 if (expandRow [i-k]) {
|
|
|
556 heights [last=i-k] += delta;
|
|
|
557 }
|
|
|
558 }
|
|
|
559 if (last > -1) heights [last] += remainder;
|
|
|
560 }
|
|
|
561 }
|
|
|
562 if (!data.grabExcessVerticalSpace || data.minimumHeight !is 0) {
|
|
|
563 h = !data.grabExcessVerticalSpace || data.minimumHeight is SWT.DEFAULT ? data.cacheHeight : data.minimumHeight;
|
|
|
564 h += data.verticalIndent - spanMinHeight - (vSpan - 1) * verticalSpacing;
|
|
|
565 if (h > 0) {
|
|
|
566 if (spanExpandCount is 0) {
|
|
|
567 minHeights [i] += h;
|
|
|
568 } else {
|
|
|
569 int delta = h / spanExpandCount;
|
|
|
570 int remainder = h % spanExpandCount, last = -1;
|
|
|
571 for (int k = 0; k < vSpan; k++) {
|
|
|
572 if (expandRow [i-k]) {
|
|
|
573 minHeights [last=i-k] += delta;
|
|
|
574 }
|
|
|
575 }
|
|
|
576 if (last > -1) minHeights [last] += remainder;
|
|
|
577 }
|
|
|
578 }
|
|
|
579 }
|
|
|
580 }
|
|
|
581 }
|
|
|
582 }
|
|
|
583 }
|
|
|
584 if (height !is SWT.DEFAULT && expandCount > 0) {
|
|
|
585 int totalHeight = 0;
|
|
|
586 for (int i=0; i<rowCount; i++) {
|
|
|
587 totalHeight += heights [i];
|
|
|
588 }
|
|
|
589 int c = expandCount;
|
|
|
590 int delta = (availableHeight - totalHeight) / c;
|
|
|
591 int remainder = (availableHeight - totalHeight) % c;
|
|
|
592 int last = -1;
|
|
|
593 while (totalHeight !is availableHeight) {
|
|
|
594 for (int i=0; i<rowCount; i++) {
|
|
|
595 if (expandRow [i]) {
|
|
|
596 if (heights [i] + delta > minHeights [i]) {
|
|
|
597 heights [last = i] = heights [i] + delta;
|
|
|
598 } else {
|
|
|
599 heights [i] = minHeights [i];
|
|
|
600 expandRow [i] = false;
|
|
|
601 c--;
|
|
|
602 }
|
|
|
603 }
|
|
|
604 }
|
|
|
605 if (last > -1) heights [last] += remainder;
|
|
|
606
|
|
|
607 for (int i=0; i<rowCount; i++) {
|
|
|
608 for (int j=0; j<columnCount; j++) {
|
|
|
609 GridData data = getData (grid, i, j, rowCount, columnCount, false);
|
|
|
610 if (data !is null) {
|
|
|
611 int vSpan = Math.max (1, Math.min (data.verticalSpan, rowCount));
|
|
|
612 if (vSpan > 1) {
|
|
|
613 if (!data.grabExcessVerticalSpace || data.minimumHeight !is 0) {
|
|
|
614 int spanHeight = 0, spanExpandCount = 0;
|
|
|
615 for (int k=0; k<vSpan; k++) {
|
|
|
616 spanHeight += heights [i-k];
|
|
|
617 if (expandRow [i-k]) spanExpandCount++;
|
|
|
618 }
|
|
|
619 int h = !data.grabExcessVerticalSpace || data.minimumHeight is SWT.DEFAULT ? data.cacheHeight : data.minimumHeight;
|
|
|
620 h += data.verticalIndent - spanHeight - (vSpan - 1) * verticalSpacing;
|
|
|
621 if (h > 0) {
|
|
|
622 if (spanExpandCount is 0) {
|
|
|
623 heights [i] += h;
|
|
|
624 } else {
|
|
|
625 int delta2 = h / spanExpandCount;
|
|
|
626 int remainder2 = h % spanExpandCount, last2 = -1;
|
|
|
627 for (int k = 0; k < vSpan; k++) {
|
|
|
628 if (expandRow [i-k]) {
|
|
|
629 heights [last2=i-k] += delta2;
|
|
|
630 }
|
|
|
631 }
|
|
|
632 if (last2 > -1) heights [last2] += remainder2;
|
|
|
633 }
|
|
|
634 }
|
|
|
635 }
|
|
|
636 }
|
|
|
637 }
|
|
|
638 }
|
|
|
639 }
|
|
|
640 if (c is 0) break;
|
|
|
641 totalHeight = 0;
|
|
|
642 for (int i=0; i<rowCount; i++) {
|
|
|
643 totalHeight += heights [i];
|
|
|
644 }
|
|
|
645 delta = (availableHeight - totalHeight) / c;
|
|
|
646 remainder = (availableHeight - totalHeight) % c;
|
|
|
647 last = -1;
|
|
|
648 }
|
|
|
649 }
|
|
|
650
|
|
|
651 /* Position the controls */
|
|
|
652 if (move) {
|
|
|
653 int gridY = y + marginTop + marginHeight;
|
|
|
654 for (int i=0; i<rowCount; i++) {
|
|
|
655 int gridX = x + marginLeft + marginWidth;
|
|
|
656 for (int j=0; j<columnCount; j++) {
|
|
|
657 GridData data = getData (grid, i, j, rowCount, columnCount, true);
|
|
|
658 if (data !is null) {
|
|
|
659 int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
|
|
|
660 int vSpan = Math.max (1, data.verticalSpan);
|
|
|
661 int cellWidth = 0, cellHeight = 0;
|
|
|
662 for (int k=0; k<hSpan; k++) {
|
|
|
663 cellWidth += widths [j+k];
|
|
|
664 }
|
|
|
665 for (int k=0; k<vSpan; k++) {
|
|
|
666 cellHeight += heights [i+k];
|
|
|
667 }
|
|
|
668 cellWidth += horizontalSpacing * (hSpan - 1);
|
|
|
669 int childX = gridX + data.horizontalIndent;
|
|
|
670 int childWidth = Math.min (data.cacheWidth, cellWidth);
|
|
|
671 switch (data.horizontalAlignment) {
|
|
|
672 case SWT.CENTER:
|
|
|
673 case GridData.CENTER:
|
|
|
674 childX += Math.max (0, (cellWidth - data.horizontalIndent - childWidth) / 2);
|
|
|
675 break;
|
|
|
676 case SWT.RIGHT:
|
|
|
677 case SWT.END:
|
|
|
678 case GridData.END:
|
|
|
679 childX += Math.max (0, cellWidth - data.horizontalIndent - childWidth);
|
|
|
680 break;
|
|
|
681 case SWT.FILL:
|
|
|
682 childWidth = cellWidth - data.horizontalIndent;
|
|
|
683 break;
|
|
|
684 default:
|
|
|
685 }
|
|
|
686 cellHeight += verticalSpacing * (vSpan - 1);
|
|
|
687 int childY = gridY + data.verticalIndent;
|
|
|
688 int childHeight = Math.min (data.cacheHeight, cellHeight);
|
|
|
689 switch (data.verticalAlignment) {
|
|
|
690 case SWT.CENTER:
|
|
|
691 case GridData.CENTER:
|
|
|
692 childY += Math.max (0, (cellHeight - data.verticalIndent - childHeight) / 2);
|
|
|
693 break;
|
|
|
694 case SWT.BOTTOM:
|
|
|
695 case SWT.END:
|
|
|
696 case GridData.END:
|
|
|
697 childY += Math.max (0, cellHeight - data.verticalIndent - childHeight);
|
|
|
698 break;
|
|
|
699 case SWT.FILL:
|
|
|
700 childHeight = cellHeight - data.verticalIndent;
|
|
|
701 break;
|
|
|
702 default:
|
|
|
703 }
|
|
|
704 Control child = grid [i][j];
|
|
|
705 if (child !is null) {
|
|
|
706 child.setBounds (childX, childY, childWidth, childHeight);
|
|
|
707 }
|
|
|
708 }
|
|
|
709 gridX += widths [j] + horizontalSpacing;
|
|
|
710 }
|
|
|
711 gridY += heights [i] + verticalSpacing;
|
|
|
712 }
|
|
|
713 }
|
|
|
714
|
|
|
715 // clean up cache
|
|
|
716 for (int i = 0; i < flushLength; i++) {
|
|
|
717 flush [i].cacheWidth = flush [i].cacheHeight = -1;
|
|
|
718 }
|
|
|
719
|
|
|
720 int totalDefaultWidth = 0;
|
|
|
721 int totalDefaultHeight = 0;
|
|
|
722 for (int i=0; i<columnCount; i++) {
|
|
|
723 totalDefaultWidth += widths [i];
|
|
|
724 }
|
|
|
725 for (int i=0; i<rowCount; i++) {
|
|
|
726 totalDefaultHeight += heights [i];
|
|
|
727 }
|
|
|
728 totalDefaultWidth += horizontalSpacing * (columnCount - 1) + marginLeft + marginWidth * 2 + marginRight;
|
|
|
729 totalDefaultHeight += verticalSpacing * (rowCount - 1) + marginTop + marginHeight * 2 + marginBottom;
|
|
|
730 return new Point (totalDefaultWidth, totalDefaultHeight);
|
|
|
731 }
|
|
|
732
|
|
|
733 String getName () {
|
|
|
734 String string = this.classinfo.name;
|
|
|
735 int index = string.lastIndexOf('.');
|
|
|
736 if (index is -1 ) return string;
|
|
|
737 return string[ index + 1 .. string.length ];
|
|
|
738 }
|
|
|
739
|
|
|
740 /**
|
|
|
741 * Returns a string containing a concise, human-readable
|
|
|
742 * description of the receiver.
|
|
|
743 *
|
|
|
744 * @return a string representation of the layout
|
|
|
745 */
|
|
|
746 override public String toString () {
|
|
|
747 String string = getName ()~" {";
|
|
|
748 if (numColumns !is 1) string ~= "numColumns="~to!(String)(numColumns)~" ";
|
|
|
749 if (makeColumnsEqualWidth) string ~= "makeColumnsEqualWidth="~to!(String)(makeColumnsEqualWidth)~" ";
|
|
|
750 if (marginWidth !is 0) string ~= "marginWidth="~to!(String)(marginWidth)~" ";
|
|
|
751 if (marginHeight !is 0) string ~= "marginHeight="~to!(String)(marginHeight)~" ";
|
|
|
752 if (marginLeft !is 0) string ~= "marginLeft="~to!(String)(marginLeft)~" ";
|
|
|
753 if (marginRight !is 0) string ~= "marginRight="~to!(String)(marginRight)~" ";
|
|
|
754 if (marginTop !is 0) string ~= "marginTop="~to!(String)(marginTop)~" ";
|
|
|
755 if (marginBottom !is 0) string ~= "marginBottom="~to!(String)(marginBottom)~" ";
|
|
|
756 if (horizontalSpacing !is 0) string ~= "horizontalSpacing="~to!(String)(horizontalSpacing)~" ";
|
|
|
757 if (verticalSpacing !is 0) string ~= "verticalSpacing="~to!(String)(verticalSpacing)~" ";
|
|
|
758 string = string.trim();
|
|
|
759 string ~= "}";
|
|
|
760 return string;
|
|
|
761 }
|
|
|
762 }
|
