Mercurial > projects > dwt-mac
annotate dwt/widgets/CoolItem.d @ 90:c7f7f4d7091a
All widgets are ported
author | Jacob Carlborg <doob@me.com> |
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date | Tue, 30 Dec 2008 18:54:31 +0100 |
parents | a3f5118c8b37 |
children | 63a09873578e |
rev | line source |
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45 | 1 /******************************************************************************* |
2 * Copyright (c) 2000, 2008 IBM Corporation and others. | |
0
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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 |
63 | 10 * |
11 * Port to the D programming language: | |
12 * Jacob Carlborg <doob@me.com> | |
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13 *******************************************************************************/ |
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14 module dwt.widgets.CoolItem; |
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15 |
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16 import dwt.dwthelper.utils; |
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17 |
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18 |
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19 import dwt.DWT; |
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20 import dwt.DWTException; |
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21 import dwt.events.SelectionEvent; |
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22 import dwt.events.SelectionListener; |
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23 import dwt.graphics.Color; |
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24 import dwt.graphics.GC; |
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25 import dwt.graphics.Image; |
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26 import dwt.graphics.ImageData; |
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27 import dwt.graphics.PaletteData; |
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28 import dwt.graphics.Point; |
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29 import dwt.graphics.RGB; |
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30 import dwt.graphics.Rectangle; |
63 | 31 |
32 import dwt.widgets.Control; | |
33 import dwt.widgets.CoolBar; | |
34 import dwt.widgets.Event; | |
35 import dwt.widgets.Item; | |
90 | 36 import dwt.widgets.Listener; |
63 | 37 import dwt.widgets.ToolBar; |
38 import dwt.widgets.ToolItem; | |
39 import dwt.widgets.TypedListener; | |
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40 |
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41 /** |
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42 * Instances of this class are selectable user interface |
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43 * objects that represent the dynamically positionable |
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44 * areas of a <code>CoolBar</code>. |
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45 * <dl> |
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46 * <dt><b>Styles:</b></dt> |
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47 * <dd>DROP_DOWN</dd> |
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48 * <dt><b>Events:</b></dt> |
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49 * <dd>Selection</dd> |
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50 * </dl> |
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51 * <p> |
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52 * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
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53 * </p> |
45 | 54 * |
55 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> | |
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56 */ |
3 | 57 public class CoolItem : Item { |
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58 Control control; |
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59 CoolBar parent; |
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60 bool ideal; |
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61 int preferredWidth, preferredHeight, minimumWidth, minimumHeight, requestedWidth; |
90 | 62 Rectangle itemBounds; |
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63 |
90 | 64 static const int MARGIN_WIDTH = 4; |
65 static const int GRABBER_WIDTH = 2; | |
66 static const int MINIMUM_WIDTH = (2 * MARGIN_WIDTH) + GRABBER_WIDTH; | |
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67 |
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68 private int CHEVRON_HORIZONTAL_TRIM = -1; //platform dependent values |
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69 private int CHEVRON_VERTICAL_TRIM = -1; |
90 | 70 private static const int CHEVRON_LEFT_MARGIN = 2; |
71 private static const int CHEVRON_IMAGE_WIDTH = 8; //Width to draw the double arrow | |
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72 |
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73 ToolBar chevron; |
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74 bool wrap; |
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75 Image arrowImage = null; |
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76 |
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77 /** |
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78 * Constructs a new instance of this class given its parent |
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79 * (which must be a <code>CoolBar</code>) and a style value |
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80 * describing its behavior and appearance. The item is added |
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81 * to the end of the items maintained by its parent. |
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82 * <p> |
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83 * The style value is either one of the style constants defined in |
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84 * class <code>DWT</code> which is applicable to instances of this |
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85 * class, or must be built by <em>bitwise OR</em>'ing together |
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86 * (that is, using the <code>int</code> "|" operator) two or more |
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87 * of those <code>DWT</code> style constants. The class description |
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88 * lists the style constants that are applicable to the class. |
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89 * Style bits are also inherited from superclasses. |
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90 * </p> |
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91 * |
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92 * @param parent a composite control which will be the parent of the new instance (cannot be null) |
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93 * @param style the style of control to construct |
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94 * |
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95 * @exception IllegalArgumentException <ul> |
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96 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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97 * </ul> |
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98 * @exception DWTException <ul> |
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99 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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100 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
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101 * </ul> |
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102 * |
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103 * @see DWT#DROP_DOWN |
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104 * @see Widget#checkSubclass |
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105 * @see Widget#getStyle |
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106 */ |
5 | 107 public this (CoolBar parent, int style) { |
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108 super(parent, style); |
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109 this.parent = parent; |
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110 parent.createItem (this, parent.getItemCount()); |
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111 calculateChevronTrim (); |
90 | 112 |
113 itemBounds = new Rectangle(0, 0, 0, 0); | |
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114 } |
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115 /** |
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116 * Constructs a new instance of this class given its parent |
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117 * (which must be a <code>CoolBar</code>), a style value |
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118 * describing its behavior and appearance, and the index |
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119 * at which to place it in the items maintained by its parent. |
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120 * <p> |
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121 * The style value is either one of the style constants defined in |
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122 * class <code>DWT</code> which is applicable to instances of this |
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123 * class, or must be built by <em>bitwise OR</em>'ing together |
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124 * (that is, using the <code>int</code> "|" operator) two or more |
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125 * of those <code>DWT</code> style constants. The class description |
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126 * lists the style constants that are applicable to the class. |
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127 * Style bits are also inherited from superclasses. |
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128 * </p> |
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129 * |
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130 * @param parent a composite control which will be the parent of the new instance (cannot be null) |
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131 * @param style the style of control to construct |
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132 * @param index the zero-relative index at which to store the receiver in its parent |
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133 * |
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134 * @exception IllegalArgumentException <ul> |
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135 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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136 * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the parent (inclusive)</li> |
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137 * </ul> |
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138 * @exception DWTException <ul> |
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139 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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140 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
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141 * </ul> |
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142 * |
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143 * @see DWT#DROP_DOWN |
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144 * @see Widget#checkSubclass |
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145 * @see Widget#getStyle |
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146 */ |
5 | 147 public this (CoolBar parent, int style, int index) { |
0
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148 super(parent, style); |
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149 this.parent = parent; |
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150 parent.createItem (this, index); |
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151 calculateChevronTrim (); |
90 | 152 |
153 itemBounds = new Rectangle(0, 0, 0, 0); | |
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154 } |
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155 /** |
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156 * Adds the listener to the collection of listeners that will |
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157 * be notified when the control is selected by the user, by sending it one |
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158 * of the messages defined in the <code>SelectionListener</code> |
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159 * interface. |
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160 * <p> |
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161 * If <code>widgetSelected</code> is called when the mouse is over |
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162 * the drop-down arrow (or 'chevron') portion of the cool item, |
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163 * the event object detail field contains the value <code>DWT.ARROW</code>, |
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164 * and the x and y fields in the event object represent the point at |
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165 * the bottom left of the chevron, where the menu should be popped up. |
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166 * <code>widgetDefaultSelected</code> is not called. |
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167 * </p> |
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168 * |
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169 * @param listener the listener which should be notified when the control is selected by the user |
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170 * |
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171 * @exception IllegalArgumentException <ul> |
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172 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
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173 * </ul> |
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174 * @exception DWTException <ul> |
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175 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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176 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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177 * </ul> |
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178 * |
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179 * @see SelectionListener |
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180 * @see #removeSelectionListener |
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181 * @see SelectionEvent |
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182 * |
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183 * @since 2.0 |
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184 */ |
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185 public void addSelectionListener(SelectionListener listener) { |
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186 checkWidget(); |
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187 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
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188 TypedListener typedListener = new TypedListener (listener); |
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189 addListener (DWT.Selection,typedListener); |
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190 addListener (DWT.DefaultSelection,typedListener); |
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191 } |
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192 protected void checkSubclass () { |
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193 if (!isValidSubclass ()) error (DWT.ERROR_INVALID_SUBCLASS); |
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194 } |
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195 /* |
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196 * Find the trim size of the Toolbar widget in the current platform. |
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197 */ |
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198 void calculateChevronTrim () { |
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199 ToolBar tb = new ToolBar (parent, DWT.FLAT); |
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200 ToolItem ti = new ToolItem (tb, DWT.PUSH); |
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201 Image image = new Image (display, 1, 1); |
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202 ti.setImage (image); |
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203 Point size = tb.computeSize (DWT.DEFAULT, DWT.DEFAULT); |
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204 size = parent.fixPoint(size.x, size.y); |
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205 CHEVRON_HORIZONTAL_TRIM = size.x - 1; |
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206 CHEVRON_VERTICAL_TRIM = size.y - 1; |
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207 tb.dispose (); |
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208 ti.dispose (); |
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209 image.dispose (); |
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210 } |
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211 /** |
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212 * Returns the preferred size of the receiver. |
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213 * <p> |
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214 * The <em>preferred size</em> of a <code>CoolItem</code> is the size that |
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215 * it would best be displayed at. The width hint and height hint arguments |
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216 * allow the caller to ask the instance questions such as "Given a particular |
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217 * width, how high does it need to be to show all of the contents?" |
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218 * To indicate that the caller does not wish to constrain a particular |
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219 * dimension, the constant <code>DWT.DEFAULT</code> is passed for the hint. |
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220 * </p> |
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221 * |
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222 * @param wHint the width hint (can be <code>DWT.DEFAULT</code>) |
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223 * @param hHint the height hint (can be <code>DWT.DEFAULT</code>) |
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224 * @return the preferred size |
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225 * |
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226 * @exception DWTException <ul> |
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227 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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228 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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229 * </ul> |
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230 * |
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231 * @see Layout |
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232 * @see #getBounds |
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233 * @see #getSize |
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234 * @see Control#getBorderWidth |
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235 * @see Scrollable#computeTrim |
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236 * @see Scrollable#getClientArea |
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237 */ |
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238 public Point computeSize (int wHint, int hHint) { |
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239 checkWidget(); |
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240 int width = wHint, height = hHint; |
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241 if (wHint is DWT.DEFAULT) width = 32; |
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242 if (hHint is DWT.DEFAULT) height = 32; |
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243 if ((parent.style & DWT.VERTICAL) !is 0) { |
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244 height += MINIMUM_WIDTH; |
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245 } else { |
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246 width += MINIMUM_WIDTH; |
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247 } |
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248 return new Point (width, height); |
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249 } |
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250 public void dispose () { |
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251 if (isDisposed()) return; |
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252 |
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253 /* |
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254 * Must call parent.destroyItem() before super.dispose(), since it needs to |
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255 * query the bounds to properly remove the item. |
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256 */ |
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257 parent.destroyItem(this); |
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258 super.dispose (); |
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259 parent = null; |
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260 control = null; |
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261 |
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262 /* |
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263 * Although the parent for the chevron is the CoolBar (CoolItem can not be the parent) |
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264 * it has to be disposed with the item |
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265 */ |
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266 if (chevron !is null && !chevron.isDisposed()) chevron.dispose(); |
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267 chevron = null; |
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268 if (arrowImage !is null && !arrowImage.isDisposed()) arrowImage.dispose(); |
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269 arrowImage = null; |
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270 } |
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271 |
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272 Image createArrowImage (int width, int height) { |
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273 Point point = parent.fixPoint(width, height); |
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274 width = point.x; |
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275 height = point.y; |
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276 Color foreground = parent.getForeground (); |
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277 Color black = display.getSystemColor (DWT.COLOR_BLACK); |
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278 Color background = parent.getBackground (); |
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279 |
63 | 280 PaletteData palette = new PaletteData ([foreground.getRGB(), background.getRGB(), black.getRGB()]); |
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281 ImageData imageData = new ImageData (width, height, 4, palette); |
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282 imageData.transparentPixel = 1; |
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283 Image image = new Image (display, imageData); |
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284 |
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285 GC gc = new GC (image, parent.getStyle() & DWT.RIGHT_TO_LEFT); |
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286 gc.setBackground (background); |
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287 gc.fillRectangle (0, 0, width, height); |
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288 gc.setForeground (black); |
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289 |
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290 int startX = 0 ; |
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291 if ((parent.style & DWT.VERTICAL) !is 0) { |
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292 startX = width - CHEVRON_IMAGE_WIDTH; |
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293 } |
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294 int startY = height / 6; |
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295 int step = 2; |
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296 gc.drawLine (startX, startY, startX + step, startY + step); |
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297 gc.drawLine (startX, startY + (2 * step), startX + step, startY + step); |
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298 startX++; |
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299 gc.drawLine (startX, startY, startX + step, startY + step); |
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300 gc.drawLine (startX, startY + (2 * step), startX + step, startY + step); |
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301 startX += 3; |
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302 gc.drawLine (startX, startY, startX + step, startY + step); |
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303 gc.drawLine (startX, startY + (2 * step), startX + step, startY + step); |
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304 startX++; |
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305 gc.drawLine (startX, startY, startX + step, startY + step); |
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306 gc.drawLine (startX, startY + (2 * step), startX + step, startY + step); |
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307 gc.dispose (); |
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308 return image; |
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309 } |
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310 /** |
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311 * Returns a rectangle describing the receiver's size and location |
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312 * relative to its parent. |
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313 * |
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314 * @return the receiver's bounding rectangle |
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315 * |
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316 * @exception DWTException <ul> |
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317 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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318 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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319 * </ul> |
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320 */ |
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321 public Rectangle getBounds () { |
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322 checkWidget(); |
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323 return parent.fixRectangle(itemBounds.x, itemBounds.y, itemBounds.width, itemBounds.height); |
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324 } |
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325 Rectangle internalGetBounds () { |
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326 return new Rectangle(itemBounds.x, itemBounds.y, itemBounds.width, itemBounds.height); |
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327 } |
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328 /** |
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329 * Returns the control that is associated with the receiver. |
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330 * |
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331 * @return the control that is contained by the receiver |
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332 * |
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333 * @exception DWTException <ul> |
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334 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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335 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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336 * </ul> |
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337 */ |
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338 public Control getControl () { |
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339 checkWidget(); |
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340 return control; |
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341 } |
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342 /** |
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343 * Returns the minimum size that the cool item can |
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344 * be resized to using the cool item's gripper. |
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345 * |
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346 * @return a point containing the minimum width and height of the cool item, in pixels |
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347 * |
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348 * @exception DWTException <ul> |
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349 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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350 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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351 * </ul> |
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352 * |
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353 * @since 2.0 |
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354 */ |
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355 public Point getMinimumSize () { |
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356 checkWidget(); |
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357 return parent.fixPoint(minimumWidth, minimumHeight); |
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358 } |
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359 /** |
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360 * Returns the receiver's parent, which must be a <code>CoolBar</code>. |
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361 * |
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362 * @return the receiver's parent |
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363 * |
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364 * @exception DWTException <ul> |
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365 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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366 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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367 * </ul> |
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368 */ |
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369 public CoolBar getParent () { |
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370 checkWidget(); |
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371 return parent; |
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372 } |
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373 /** |
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374 * Returns a point describing the receiver's ideal size. |
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375 * The x coordinate of the result is the ideal width of the receiver. |
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376 * The y coordinate of the result is the ideal height of the receiver. |
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377 * |
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378 * @return the receiver's ideal size |
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379 * |
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380 * @exception DWTException <ul> |
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381 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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382 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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383 * </ul> |
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384 */ |
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385 public Point getPreferredSize () { |
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386 checkWidget(); |
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387 return parent.fixPoint(preferredWidth, preferredHeight); |
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388 } |
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389 /** |
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390 * Returns a point describing the receiver's size. The |
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391 * x coordinate of the result is the width of the receiver. |
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392 * The y coordinate of the result is the height of the |
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393 * receiver. |
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394 * |
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395 * @return the receiver's size |
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396 * |
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397 * @exception DWTException <ul> |
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398 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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399 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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400 * </ul> |
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401 */ |
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402 public Point getSize () { |
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403 checkWidget(); |
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404 return parent.fixPoint(itemBounds.width, itemBounds.height); |
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405 } |
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406 int internalGetMinimumWidth () { |
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407 int width = minimumWidth + MINIMUM_WIDTH; |
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408 if ((style & DWT.DROP_DOWN) !is 0 && width < preferredWidth) { |
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409 width += CHEVRON_IMAGE_WIDTH + CHEVRON_HORIZONTAL_TRIM + CHEVRON_LEFT_MARGIN; |
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410 } |
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411 return width; |
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412 } |
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413 /* |
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414 * Called when the chevron is selected. |
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415 */ |
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416 void onSelection (Event ev) { |
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417 Rectangle bounds = chevron.getBounds(); |
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418 Event event = new Event(); |
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419 event.detail = DWT.ARROW; |
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420 if ((parent.style & DWT.VERTICAL) !is 0) { |
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421 event.x = bounds.x + bounds.width; |
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422 event.y = bounds.y; |
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423 } else { |
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424 event.x = bounds.x; |
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425 event.y = bounds.y + bounds.height; |
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426 } |
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427 postEvent (DWT.Selection, event); |
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428 } |
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429 /** |
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430 * Removes the listener from the collection of listeners that |
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431 * will be notified when the control is selected by the user. |
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432 * |
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433 * @param listener the listener which should no longer be notified |
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434 * |
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435 * @exception IllegalArgumentException <ul> |
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436 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
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437 * </ul> |
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438 * @exception DWTException <ul> |
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439 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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440 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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441 * </ul> |
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442 * |
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443 * @see SelectionListener |
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444 * @see #addSelectionListener |
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445 * |
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446 * @since 2.0 |
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447 */ |
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448 public void removeSelectionListener(SelectionListener listener) { |
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449 checkWidget(); |
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450 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
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451 if (eventTable is null) return; |
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452 eventTable.unhook (DWT.Selection, listener); |
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453 eventTable.unhook (DWT.DefaultSelection,listener); |
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454 } |
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455 void setBounds (int x, int y, int width, int height) { |
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456 itemBounds.x = x; |
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457 itemBounds.y = y; |
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458 itemBounds.width = width; |
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459 itemBounds.height = height; |
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460 if (control !is null) { |
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461 int controlWidth = width - MINIMUM_WIDTH; |
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462 if ((style & DWT.DROP_DOWN) !is 0 && width < preferredWidth) { |
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463 controlWidth -= CHEVRON_IMAGE_WIDTH + CHEVRON_HORIZONTAL_TRIM + CHEVRON_LEFT_MARGIN; |
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464 } |
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465 control.setBounds (parent.fixRectangle(x + MINIMUM_WIDTH, y, controlWidth, height)); |
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466 } |
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467 updateChevron(); |
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468 } |
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469 /** |
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470 * Sets the control that is associated with the receiver |
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471 * to the argument. |
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472 * |
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473 * @param control the new control that will be contained by the receiver |
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474 * |
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475 * @exception IllegalArgumentException <ul> |
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476 * <li>ERROR_INVALID_ARGUMENT - if the control has been disposed</li> |
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477 * <li>ERROR_INVALID_PARENT - if the control is not in the same widget tree</li> |
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478 * </ul> |
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479 * @exception DWTException <ul> |
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480 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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481 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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482 * </ul> |
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483 */ |
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484 public void setControl (Control control) { |
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485 checkWidget(); |
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486 if (control !is null) { |
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487 if (control.isDisposed()) error (DWT.ERROR_INVALID_ARGUMENT); |
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488 if (control.parent !is parent) error (DWT.ERROR_INVALID_PARENT); |
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489 } |
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490 this.control = control; |
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491 if (control !is null) { |
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492 int controlWidth = itemBounds.width - MINIMUM_WIDTH; |
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493 if ((style & DWT.DROP_DOWN) !is 0 && itemBounds.width < preferredWidth) { |
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494 controlWidth -= CHEVRON_IMAGE_WIDTH + CHEVRON_HORIZONTAL_TRIM + CHEVRON_LEFT_MARGIN; |
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495 } |
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496 control.setBounds (parent.fixRectangle(itemBounds.x + MINIMUM_WIDTH, itemBounds.y, controlWidth, itemBounds.height)); |
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497 } |
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498 } |
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499 /** |
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500 * Sets the minimum size that the cool item can be resized to |
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501 * using the cool item's gripper, to the point specified by the arguments. |
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502 * |
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503 * @param width the minimum width of the cool item, in pixels |
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504 * @param height the minimum height of the cool item, in pixels |
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505 * |
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506 * @exception DWTException <ul> |
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507 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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508 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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509 * </ul> |
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510 * |
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511 * @since 2.0 |
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512 */ |
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513 public void setMinimumSize (int width, int height) { |
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514 checkWidget (); |
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515 Point point = parent.fixPoint(width, height); |
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516 minimumWidth = point.x; |
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517 minimumHeight = point.y; |
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518 } |
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519 /** |
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520 * Sets the minimum size that the cool item can be resized to |
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521 * using the cool item's gripper, to the point specified by the argument. |
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522 * |
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523 * @param size a point representing the minimum width and height of the cool item, in pixels |
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524 * |
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525 * @exception IllegalArgumentException <ul> |
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526 * <li>ERROR_NULL_ARGUMENT - if the point is null</li> |
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527 * </ul> |
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528 * @exception DWTException <ul> |
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529 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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530 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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531 * </ul> |
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532 * |
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533 * @since 2.0 |
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534 */ |
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535 public void setMinimumSize (Point size) { |
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536 checkWidget (); |
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537 if (size is null) error(DWT.ERROR_NULL_ARGUMENT); |
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538 setMinimumSize(size.x, size.y); |
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539 } |
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540 /** |
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541 * Sets the receiver's ideal size to the point specified by the arguments. |
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542 * |
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543 * @param width the new ideal width for the receiver |
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544 * @param height the new ideal height for the receiver |
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|
545 * |
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546 * @exception DWTException <ul> |
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547 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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548 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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549 * </ul> |
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550 */ |
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551 public void setPreferredSize (int width, int height) { |
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552 checkWidget(); |
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553 ideal = true; |
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554 Point point = parent.fixPoint(width, height); |
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555 preferredWidth = Math.max (point.x, MINIMUM_WIDTH); |
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556 preferredHeight = point.y; |
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|
557 } |
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
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|
558 /** |
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559 * Sets the receiver's ideal size to the point specified by the argument. |
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|
560 * |
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parents:
diff
changeset
|
561 * @param size the new ideal size for the receiver |
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562 * |
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|
563 * @exception IllegalArgumentException <ul> |
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564 * <li>ERROR_NULL_ARGUMENT - if the point is null</li> |
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565 * </ul> |
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|
566 * @exception DWTException <ul> |
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567 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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568 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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|
569 * </ul> |
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|
570 */ |
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571 public void setPreferredSize (Point size) { |
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|
572 checkWidget(); |
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573 if (size is null) error(DWT.ERROR_NULL_ARGUMENT); |
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574 setPreferredSize(size.x, size.y); |
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575 } |
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|
576 /** |
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parents:
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|
577 * Sets the receiver's size to the point specified by the arguments. |
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|
578 * <p> |
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579 * Note: Attempting to set the width or height of the |
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|
580 * receiver to a negative number will cause that |
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|
581 * value to be set to zero instead. |
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|
582 * </p> |
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|
583 * |
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|
584 * @param width the new width for the receiver |
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|
585 * @param height the new height for the receiver |
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|
586 * |
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diff
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|
587 * @exception DWTException <ul> |
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|
588 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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|
589 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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parents:
diff
changeset
|
590 * </ul> |
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parents:
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changeset
|
591 */ |
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parents:
diff
changeset
|
592 public void setSize (int width, int height) { |
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|
593 checkWidget(); |
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parents:
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594 Point point = parent.fixPoint(width, height); |
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595 width = Math.max(point.x, minimumWidth + MINIMUM_WIDTH); |
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596 height = point.y; |
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597 if (!ideal) { |
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598 preferredWidth = width; |
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599 preferredHeight = height; |
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600 } |
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601 itemBounds.width = requestedWidth = width; |
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602 itemBounds.height = height; |
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603 if (control !is null) { |
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604 int controlWidth = width - MINIMUM_WIDTH; |
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605 if ((style & DWT.DROP_DOWN) !is 0 && width < preferredWidth) { |
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606 controlWidth -= CHEVRON_IMAGE_WIDTH + CHEVRON_HORIZONTAL_TRIM + CHEVRON_LEFT_MARGIN; |
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607 } |
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608 control.setSize(parent.fixPoint(controlWidth, height)); |
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609 } |
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610 parent.relayout(); |
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611 updateChevron(); |
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612 } |
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613 /** |
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614 * Sets the receiver's size to the point specified by the argument. |
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615 * <p> |
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616 * Note: Attempting to set the width or height of the |
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617 * receiver to a negative number will cause them to be |
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618 * set to zero instead. |
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619 * </p> |
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620 * |
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621 * @param size the new size for the receiver |
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622 * |
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623 * @exception IllegalArgumentException <ul> |
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624 * <li>ERROR_NULL_ARGUMENT - if the point is null</li> |
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625 * </ul> |
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626 * @exception DWTException <ul> |
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627 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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628 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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629 * </ul> |
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630 */ |
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631 public void setSize (Point size) { |
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632 checkWidget(); |
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633 if (size is null) error (DWT.ERROR_NULL_ARGUMENT); |
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634 setSize (size.x, size.y); |
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635 } |
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636 void updateChevron() { |
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637 if (control !is null) { |
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638 int width = itemBounds.width; |
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639 if ((style & DWT.DROP_DOWN) !is 0 && width < preferredWidth) { |
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640 if (chevron is null) { |
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641 chevron = new ToolBar (parent, DWT.FLAT | DWT.NO_FOCUS); |
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642 ToolItem toolItem = new ToolItem (chevron, DWT.PUSH); |
63 | 643 toolItem.addListener (DWT.Selection, new class () Listener { |
0
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644 public void handleEvent (Event event) { |
90 | 645 this.outer.onSelection (event); |
0
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646 } |
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647 }); |
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648 } |
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649 int controlHeight, currentImageHeight = 0; |
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650 if ((parent.style & DWT.VERTICAL) !is 0) { |
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651 controlHeight = control.getSize ().x; |
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652 if (arrowImage !is null) currentImageHeight = arrowImage.getBounds().width; |
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653 } else { |
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654 controlHeight = control.getSize ().y; |
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655 if (arrowImage !is null) currentImageHeight = arrowImage.getBounds().height; |
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656 } |
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657 int height = Math.min (controlHeight, itemBounds.height); |
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658 int imageHeight = Math.max(1, height - CHEVRON_VERTICAL_TRIM); |
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659 if (currentImageHeight !is imageHeight) { |
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660 Image image = createArrowImage (CHEVRON_IMAGE_WIDTH, imageHeight); |
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661 chevron.getItem (0).setImage (image); |
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662 if (arrowImage !is null) arrowImage.dispose (); |
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663 arrowImage = image; |
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664 } |
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665 chevron.setBackground (parent.getBackground()); |
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666 chevron.setBounds (parent.fixRectangle ( |
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667 itemBounds.x + width - CHEVRON_LEFT_MARGIN - CHEVRON_IMAGE_WIDTH - CHEVRON_HORIZONTAL_TRIM, |
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668 itemBounds.y, |
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669 CHEVRON_IMAGE_WIDTH + CHEVRON_HORIZONTAL_TRIM, |
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670 height)); |
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671 chevron.setVisible(true); |
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672 } else { |
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673 if (chevron !is null) { |
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674 chevron.setVisible(false); |
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675 } |
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|
676 } |
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|
677 } |
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|
678 } |
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679 } |