Mercurial > projects > dwt-mac
annotate dwt/widgets/ToolTip.d @ 3:649b8e223d5a
fix extends
author | Frank Benoit <benoit@tionex.de> |
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date | Wed, 27 Aug 2008 13:48:25 +0200 |
parents | 380af2bdd8e5 |
children | 1a8b3cb347e0 |
rev | line source |
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1 /******************************************************************************* |
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2 * Copyright (c) 2000, 2007 IBM Corporation and others. |
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3 * All rights reserved. This program and the accompanying materials |
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4 * are made available under the terms of the Eclipse Public License v1.0 |
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5 * which accompanies this distribution, and is available at |
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6 * http://www.eclipse.org/legal/epl-v10.html |
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7 * |
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8 * Contributors: |
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9 * IBM Corporation - initial API and implementation |
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10 *******************************************************************************/ |
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11 module dwt.widgets.ToolTip; |
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12 |
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13 import dwt.dwthelper.utils; |
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14 |
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15 |
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16 import dwt.DWT; |
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17 import dwt.DWTException; |
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18 import dwt.events.SelectionEvent; |
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19 import dwt.events.SelectionListener; |
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20 import dwt.graphics.Color; |
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21 import dwt.graphics.Font; |
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22 import dwt.graphics.FontData; |
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23 import dwt.graphics.GC; |
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24 import dwt.graphics.Image; |
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25 import dwt.graphics.Point; |
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26 import dwt.graphics.Rectangle; |
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27 import dwt.graphics.Region; |
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28 import dwt.graphics.TextLayout; |
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29 import dwt.graphics.TextStyle; |
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30 |
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31 /** |
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32 * Instances of this class represent popup windows that are used |
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33 * to inform or warn the user. |
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34 * <p> |
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35 * <dl> |
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36 * <dt><b>Styles:</b></dt> |
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37 * <dd>BALLOON, ICON_ERROR, ICON_INFORMATION, ICON_WARNING</dd> |
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38 * <dt><b>Events:</b></dt> |
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39 * <dd>Selection</dd> |
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40 * </dl> |
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41 * </p><p> |
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42 * Note: Only one of the styles ICON_ERROR, ICON_INFORMATION, |
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43 * and ICON_WARNING may be specified. |
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44 * </p><p> |
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45 * IMPORTANT: This class is intended to be subclassed <em>only</em> |
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46 * within the DWT implementation. |
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47 * </p> |
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48 * |
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49 * @since 3.2 |
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50 */ |
3 | 51 public class ToolTip : Widget { |
0
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52 Shell parent, tip; |
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53 TrayItem item; |
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54 int x, y; |
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55 int [] borderPolygon; |
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56 bool spikeAbove, autohide; |
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57 Listener listener; |
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58 TextLayout layoutText, layoutMessage; |
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59 Region region; |
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60 Font boldFont; |
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61 Runnable runnable; |
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62 |
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63 static final int BORDER = 5; |
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64 static final int PADDING = 5; |
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65 static final int INSET = 4; |
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66 static final int TIP_HEIGHT = 20; |
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67 static final int IMAGE_SIZE = 16; |
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68 static final int DELAY = 10000; |
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69 |
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70 /** |
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71 * Constructs a new instance of this class given its parent |
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72 * and a style value describing its behavior and appearance. |
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73 * <p> |
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74 * The style value is either one of the style constants defined in |
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75 * class <code>DWT</code> which is applicable to instances of this |
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76 * class, or must be built by <em>bitwise OR</em>'ing together |
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77 * (that is, using the <code>int</code> "|" operator) two or more |
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78 * of those <code>DWT</code> style constants. The class description |
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79 * lists the style constants that are applicable to the class. |
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80 * Style bits are also inherited from superclasses. |
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81 * </p> |
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82 * |
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83 * @param parent a composite control which will be the parent of the new instance (cannot be null) |
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84 * @param style the style of control to construct |
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85 * |
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86 * @exception IllegalArgumentException <ul> |
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87 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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88 * </ul> |
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89 * @exception DWTException <ul> |
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90 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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91 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
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92 * </ul> |
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93 * |
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94 * @see DWT#ICON_ERROR |
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95 * @see DWT#ICON_INFORMATION |
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96 * @see DWT#ICON_WARNING |
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97 * @see Widget#checkSubclass |
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98 * @see Widget#getStyle |
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99 */ |
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100 public ToolTip (Shell parent, int style) { |
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101 super (parent, checkStyle (style)); |
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102 this.parent = parent; |
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103 this.autohide = true; |
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104 x = y = -1; |
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105 Display display = getDisplay (); |
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106 tip = new Shell (parent, DWT.ON_TOP | DWT.NO_TRIM); |
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107 Color background = display.getSystemColor (DWT.COLOR_INFO_BACKGROUND); |
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108 tip.setBackground (background); |
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109 listener = new Listener () { |
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110 public void handleEvent (Event event) { |
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111 switch (event.type) { |
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112 case DWT.Dispose: onDispose (event); break; |
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113 case DWT.Paint: onPaint (event); break; |
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114 case DWT.MouseDown: onMouseDown (event); break; |
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115 } |
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116 } |
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117 }; |
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118 addListener (DWT.Dispose, listener); |
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119 tip.addListener (DWT.Paint, listener); |
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120 tip.addListener (DWT.MouseDown, listener); |
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121 } |
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122 |
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123 static int checkStyle (int style) { |
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124 int mask = DWT.ICON_ERROR | DWT.ICON_INFORMATION | DWT.ICON_WARNING; |
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125 if ((style & mask) is 0) return style; |
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126 return checkBits (style, DWT.ICON_INFORMATION, DWT.ICON_WARNING, DWT.ICON_ERROR, 0, 0, 0); |
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127 } |
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128 |
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129 /** |
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130 * Adds the listener to the collection of listeners who will |
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131 * be notified when the receiver is selected by the user, by sending |
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132 * it one of the messages defined in the <code>SelectionListener</code> |
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133 * interface. |
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134 * <p> |
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135 * <code>widgetSelected</code> is called when the receiver is selected. |
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136 * <code>widgetDefaultSelected</code> is not called. |
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137 * </p> |
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138 * |
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139 * @param listener the listener which should be notified when the receiver is selected by the user |
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140 * |
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141 * @exception IllegalArgumentException <ul> |
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142 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
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143 * </ul> |
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144 * @exception DWTException <ul> |
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145 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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146 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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147 * </ul> |
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148 * |
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149 * @see SelectionListener |
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150 * @see #removeSelectionListener |
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151 * @see SelectionEvent |
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152 */ |
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153 public void addSelectionListener (SelectionListener listener) { |
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154 checkWidget (); |
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155 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
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156 TypedListener typedListener = new TypedListener (listener); |
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157 addListener (DWT.Selection,typedListener); |
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158 addListener (DWT.DefaultSelection,typedListener); |
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159 } |
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160 |
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161 void configure () { |
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162 Display display = parent.getDisplay (); |
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163 int x = this.x; |
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164 int y = this.y; |
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165 if (x is -1 || y is -1) { |
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166 Point point = display.getCursorLocation (); |
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167 x = point.x; |
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168 y = point.y; |
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169 } |
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170 Monitor monitor = parent.getMonitor (); |
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171 Rectangle dest = monitor.getBounds (); |
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172 Point size = getSize (dest.width / 4); |
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173 int w = size.x; |
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174 int h = size.y; |
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175 int t = (style & DWT.BALLOON) !is 0 ? TIP_HEIGHT : 0; |
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176 int i = (style & DWT.BALLOON) !is 0 ? 16 : 0; |
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177 tip.setSize (w, h + t); |
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178 int [] polyline; |
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179 spikeAbove = dest.height >= y + size.y + t; |
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180 if (dest.width >= x + size.x) { |
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181 if (dest.height >= y + size.y + t) { |
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182 polyline = new int [] { |
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183 0, 5+t, 1, 5+t, 1, 3+t, 3, 1+t, 5, 1+t, 5, t, |
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184 16, t, 16, 0, 35, t, |
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185 w-5, t, w-5, 1+t, w-3, 1+t, w-1, 3+t, w-1, 5+t, w, 5+t, |
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186 w, h-5+t, w-1, h-5+t, w-1, h-3+t, w-2, h-3+t, w-2, h-2+t, w-3, h-2+t, w-3, h-1+t, w-5, h-1+t, w-5, h+t, |
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187 5, h+t, 5, h-1+t, 3, h-1+t, 3, h-2+t, 2, h-2+t, 2, h-3+t, 1, h-3+t, 1, h-5+t, 0, h-5+t, |
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188 0, 5+t}; |
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189 borderPolygon = new int[] { |
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190 0, 5+t, 1, 4+t, 1, 3+t, 3, 1+t, 4, 1+t, 5, t, |
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191 16, t, 16, 1, 35, t, |
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192 w-6, 0+t, w-5, 1+t, w-4, 1+t, w-2, 3+t, w-2, 4+t, w-1, 5+t, |
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193 w-1, h-6+t, w-2, h-5+t, w-2, h-4+t, w-4, h-2+t, w-5, h-2+t, w-6, h-1+t, |
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194 5, h-1+t, 4, h-2+t, 3, h-2+t, 1, h-4+t, 1, h-5+t, 0, h-6+t, |
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195 0, 5+t}; |
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196 tip.setLocation (Math.max (0, x - i), y); |
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197 } else { |
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198 polyline = new int [] { |
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199 0, 5, 1, 5, 1, 3, 3, 1, 5, 1, 5, 0, |
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200 w-5, 0, w-5, 1, w-3, 1, w-1, 3, w-1, 5, w, 5, |
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201 w, h-5, w-1, h-5, w-1, h-3, w-2, h-3, w-2, h-2, w-3, h-2, w-3, h-1, w-5, h-1, w-5, h, |
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202 35, h, 16, h+t, 16, h, |
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203 5, h, 5, h-1, 3, h-1, 3, h-2, 2, h-2, 2, h-3, 1, h-3, 1, h-5, 0, h-5, |
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204 0, 5}; |
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205 borderPolygon = new int[] { |
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206 0, 5, 1, 4, 1, 3, 3, 1, 4, 1, 5, 0, |
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207 w-6, 0, w-5, 1, w-4, 1, w-2, 3, w-2, 4, w-1, 5, |
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208 w-1, h-6, w-2, h-5, w-2, h-4, w-4, h-2, w-5, h-2, w-6, h-1, |
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209 36, h-1, 16, h+t-1, 16, h-1, |
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210 5, h-1, 4, h-2, 3, h-2, 1, h-4, 1, h-5, 0, h-6, |
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211 0, 5}; |
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212 tip.setLocation (Math.max (0, x - i), y - size.y - t); |
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213 } |
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214 } else { |
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215 if (dest.height >= y + size.y + t) { |
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216 polyline = new int [] { |
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217 0, 5+t, 1, 5+t, 1, 3+t, 3, 1+t, 5, 1+t, 5, t, |
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218 w-35, t, w-16, 0, w-16, t, |
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219 w-5, t, w-5, 1+t, w-3, 1+t, w-1, 3+t, w-1, 5+t, w, 5+t, |
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220 w, h-5+t, w-1, h-5+t, w-1, h-3+t, w-2, h-3+t, w-2, h-2+t, w-3, h-2+t, w-3, h-1+t, w-5, h-1+t, w-5, h+t, |
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221 5, h+t, 5, h-1+t, 3, h-1+t, 3, h-2+t, 2, h-2+t, 2, h-3+t, 1, h-3+t, 1, h-5+t, 0, h-5+t, |
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222 0, 5+t}; |
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223 borderPolygon = new int[] { |
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224 0, 5+t, 1, 4+t, 1, 3+t, 3, 1+t, 4, 1+t, 5, t, |
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225 w-35, t, w-17, 2, w-17, t, |
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226 w-6, t, w-5, 1+t, w-4, 1+t, w-2, 3+t, w-2, 4+t, w-1, 5+t, |
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227 w-1, h-6+t, w-2, h-5+t, w-2, h-4+t, w-4, h-2+t, w-5, h-2+t, w-6, h-1+t, |
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228 5, h-1+t, 4, h-2+t, 3, h-2+t, 1, h-4+t, 1, h-5+t, 0, h-6+t, |
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229 0, 5+t}; |
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230 tip.setLocation (Math.min (dest.width - size.x, x - size.x + i), y); |
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231 } else { |
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232 polyline = new int [] { |
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233 0, 5, 1, 5, 1, 3, 3, 1, 5, 1, 5, 0, |
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234 w-5, 0, w-5, 1, w-3, 1, w-1, 3, w-1, 5, w, 5, |
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235 w, h-5, w-1, h-5, w-1, h-3, w-2, h-3, w-2, h-2, w-3, h-2, w-3, h-1, w-5, h-1, w-5, h, |
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236 w-16, h, w-16, h+t, w-35, h, |
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237 5, h, 5, h-1, 3, h-1, 3, h-2, 2, h-2, 2, h-3, 1, h-3, 1, h-5, 0, h-5, |
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238 0, 5}; |
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239 borderPolygon = new int[] { |
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240 0, 5, 1, 4, 1, 3, 3, 1, 4, 1, 5, 0, |
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241 w-6, 0, w-5, 1, w-4, 1, w-2, 3, w-2, 4, w-1, 5, |
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242 w-1, h-6, w-2, h-5, w-2, h-4, w-4, h-2, w-5, h-2, w-6, h-1, |
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243 w-17, h-1, w-17, h+t-2, w-36, h-1, |
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244 5, h-1, 4, h-2, 3, h-2, 1, h-4, 1, h-5, 0, h-6, |
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245 0, 5}; |
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246 tip.setLocation (Math.min (dest.width - size.x, x - size.x + i), y - size.y - t); |
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247 } |
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248 } |
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249 if ((style & DWT.BALLOON) !is 0) { |
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250 if (region !is null) region.dispose (); |
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251 region = new Region (display); |
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252 region.add (polyline); |
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253 tip.setRegion (region); |
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254 } |
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255 } |
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256 |
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257 /** |
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258 * Returns <code>true</code> if the receiver is automatically |
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259 * hidden by the platform, and <code>false</code> otherwise. |
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260 * |
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261 * @return the receiver's auto hide state |
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262 * |
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263 * @exception DWTException <ul> |
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264 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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265 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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266 * </ul> |
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267 * |
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268 */ |
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269 public bool getAutoHide () { |
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270 checkWidget (); |
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271 return autohide; |
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272 } |
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273 |
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274 Point getSize (int maxWidth) { |
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275 int textWidth = 0, messageWidth = 0; |
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276 if (layoutText !is null) { |
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277 layoutText.setWidth (-1); |
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278 textWidth = layoutText.getBounds ().width; |
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279 } |
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280 if (layoutMessage !is null) { |
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281 layoutMessage.setWidth (-1); |
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282 messageWidth = layoutMessage.getBounds ().width; |
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283 } |
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284 int messageTrim = 2 * INSET + 2 * BORDER + 2 * PADDING; |
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285 bool hasImage = layoutText !is null && (style & DWT.BALLOON) !is 0 && (style & (DWT.ICON_ERROR | DWT.ICON_INFORMATION | DWT.ICON_WARNING)) !is 0; |
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286 int textTrim = messageTrim + (hasImage ? IMAGE_SIZE : 0); |
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287 int width = Math.min (maxWidth, Math.max (textWidth + textTrim, messageWidth + messageTrim)); |
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288 int textHeight = 0, messageHeight = 0; |
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289 if (layoutText !is null) { |
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290 layoutText.setWidth (maxWidth - textTrim); |
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291 textHeight = layoutText.getBounds ().height; |
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292 } |
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293 if (layoutMessage !is null) { |
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294 layoutMessage.setWidth (maxWidth - messageTrim); |
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295 messageHeight = layoutMessage.getBounds ().height; |
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296 } |
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297 int height = 2 * BORDER + 2 * PADDING + messageHeight; |
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298 if (layoutText !is null) height += Math.max (IMAGE_SIZE, textHeight) + 2 * PADDING; |
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299 return new Point (width, height); |
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300 } |
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301 |
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302 /** |
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303 * Returns the receiver's message, which will be an empty |
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304 * string if it has never been set. |
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305 * |
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306 * @return the receiver's message |
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307 * |
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308 * @exception DWTException <ul> |
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309 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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310 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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311 * </ul> |
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312 */ |
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313 public String getMessage () { |
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314 checkWidget (); |
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315 return layoutMessage !is null ? layoutMessage.getText() : ""; |
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316 } |
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317 |
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318 /** |
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319 * Returns the receiver's parent, which must be a <code>Shell</code>. |
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320 * |
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321 * @return the receiver's parent |
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322 * |
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323 * @exception DWTException <ul> |
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324 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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325 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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326 * </ul> |
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327 */ |
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328 public Shell getParent () { |
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329 checkWidget (); |
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330 return parent; |
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331 } |
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332 |
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333 /** |
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334 * Returns the receiver's text, which will be an empty |
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335 * string if it has never been set. |
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336 * |
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337 * @return the receiver's text |
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338 * |
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339 * @exception DWTException <ul> |
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340 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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341 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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342 * </ul> |
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343 */ |
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344 public String getText () { |
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345 checkWidget (); |
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346 return layoutText !is null ? layoutText.getText() : ""; |
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347 } |
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348 |
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349 /** |
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350 * Returns <code>true</code> if the receiver is visible, and |
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351 * <code>false</code> otherwise. |
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352 * <p> |
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353 * If one of the receiver's ancestors is not visible or some |
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354 * other condition makes the receiver not visible, this method |
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355 * may still indicate that it is considered visible even though |
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356 * it may not actually be showing. |
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357 * </p> |
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358 * |
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359 * @return the receiver's visibility state |
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360 * |
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361 * @exception DWTException <ul> |
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362 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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363 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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364 * </ul> |
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365 */ |
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366 public bool getVisible () { |
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367 checkWidget (); |
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368 return tip.getVisible (); |
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369 } |
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370 |
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371 /** |
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372 * Returns <code>true</code> if the receiver is visible and all |
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373 * of the receiver's ancestors are visible and <code>false</code> |
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374 * otherwise. |
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375 * |
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376 * @return the receiver's visibility state |
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377 * |
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378 * @exception DWTException <ul> |
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379 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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380 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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381 * </ul> |
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382 * |
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383 * @see #getVisible |
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384 */ |
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385 public bool isVisible () { |
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386 checkWidget (); |
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387 return getVisible (); |
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388 } |
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389 |
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390 void onDispose (Event event) { |
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391 removeListener (DWT.Dispose, listener); |
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392 notifyListeners (DWT.Dispose, event); |
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393 event.type = DWT.None; |
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394 |
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395 if (runnable !is null) { |
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396 Display display = getDisplay (); |
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397 display.timerExec (-1, runnable); |
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398 } |
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399 runnable = null; |
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400 tip.dispose (); |
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401 tip = null; |
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402 if (region !is null) region.dispose (); |
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403 region = null; |
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404 if (layoutText !is null) layoutText.dispose (); |
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405 layoutText = null; |
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406 if (layoutMessage !is null) layoutMessage.dispose (); |
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407 layoutMessage = null; |
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408 if (boldFont !is null) boldFont.dispose (); |
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409 boldFont = null; |
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410 borderPolygon = null; |
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411 } |
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412 |
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413 void onMouseDown (Event event) { |
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414 notifyListeners (DWT.Selection, new Event ()); |
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415 setVisible (false); |
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416 } |
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417 |
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418 void onPaint (Event event) { |
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419 GC gc = event.gc; |
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420 int x = BORDER + PADDING; |
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421 int y = BORDER + PADDING; |
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422 if ((style & DWT.BALLOON) !is 0) { |
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423 if (spikeAbove) y += TIP_HEIGHT; |
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424 gc.drawPolygon (borderPolygon); |
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425 } else { |
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426 Rectangle rect = tip.getClientArea (); |
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427 gc.drawRectangle(rect.x, rect.y, rect.width - 1, rect.height -1); |
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428 } |
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429 if (layoutText !is null) { |
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430 int id = style & (DWT.ICON_ERROR | DWT.ICON_INFORMATION | DWT.ICON_WARNING); |
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431 if ((style & DWT.BALLOON) !is 0 && id !is 0) { |
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432 Display display = getDisplay (); |
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433 Image image = display.getSystemImage (id); |
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434 Rectangle rect = image.getBounds (); |
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435 gc.drawImage (image, 0, 0, rect.width, rect.height, x, y, IMAGE_SIZE, IMAGE_SIZE); |
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436 x += IMAGE_SIZE; |
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437 } |
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438 x += INSET; |
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439 layoutText.draw (gc, x, y); |
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440 y += 2 * PADDING + Math.max (IMAGE_SIZE, layoutText.getBounds ().height); |
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441 } |
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442 if (layoutMessage !is null) { |
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443 x = BORDER + PADDING + INSET; |
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444 layoutMessage.draw (gc, x, y); |
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445 } |
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446 } |
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447 |
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448 /** |
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449 * Removes the listener from the collection of listeners who will |
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450 * be notified when the receiver is selected by the user. |
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451 * |
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452 * @param listener the listener which should no longer be notified |
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453 * |
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454 * @exception IllegalArgumentException <ul> |
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455 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
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456 * </ul> |
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457 * @exception DWTException <ul> |
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458 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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459 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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460 * </ul> |
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461 * |
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462 * @see SelectionListener |
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463 * @see #addSelectionListener |
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464 */ |
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465 public void removeSelectionListener (SelectionListener listener) { |
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466 checkWidget(); |
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467 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); |
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468 if (eventTable is null) return; |
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469 eventTable.unhook (DWT.Selection, listener); |
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470 eventTable.unhook (DWT.DefaultSelection,listener); |
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471 } |
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472 |
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473 /** |
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474 * Makes the receiver hide automatically when <code>true</code>, |
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475 * and remain visible when <code>false</code>. |
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476 * |
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477 * @param autoHide the auto hide state |
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478 * |
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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 * @see #getVisible |
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485 * @see #setVisible |
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486 */ |
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487 public void setAutoHide (bool autohide) { |
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488 checkWidget (); |
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489 this.autohide = autohide; |
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490 //TODO - update when visible |
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491 } |
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492 |
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493 /** |
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494 * Sets the location of the receiver, which must be a tooltip, |
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495 * to the point specified by the arguments which are relative |
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496 * to the display. |
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497 * <p> |
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498 * Note that this is different from most widgets where the |
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499 * location of the widget is relative to the parent. |
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500 * </p> |
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501 * |
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502 * @param x the new x coordinate for the receiver |
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503 * @param y the new y coordinate for the receiver |
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504 * |
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505 * @exception DWTException <ul> |
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506 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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507 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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508 * </ul> |
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509 */ |
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510 public void setLocation (int x, int y) { |
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511 checkWidget (); |
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512 if (this.x is x && this.y is y) return; |
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513 this.x = x; |
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514 this.y = y; |
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515 if (tip.getVisible ()) configure (); |
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516 } |
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517 |
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518 /** |
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519 * Sets the location of the receiver, which must be a tooltip, |
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520 * to the point specified by the argument which is relative |
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521 * to the display. |
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522 * <p> |
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523 * Note that this is different from most widgets where the |
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524 * location of the widget is relative to the parent. |
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525 * </p><p> |
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526 * Note that the platform window manager ultimately has control |
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527 * over the location of tooltips. |
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528 * </p> |
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529 * |
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530 * @param location the new location for the receiver |
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531 * |
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532 * @exception IllegalArgumentException <ul> |
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533 * <li>ERROR_NULL_ARGUMENT - if the point is null</li> |
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534 * </ul> |
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535 * @exception DWTException <ul> |
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536 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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537 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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538 * </ul> |
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539 */ |
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540 public void setLocation (Point location) { |
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541 checkWidget (); |
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542 if (location is null) DWT.error (DWT.ERROR_NULL_ARGUMENT); |
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543 setLocation (location.x, location.y); |
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544 } |
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545 |
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546 /** |
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547 * Sets the receiver's message. |
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548 * |
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549 * @param string the new message |
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550 * |
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551 * @exception IllegalArgumentException <ul> |
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552 * <li>ERROR_NULL_ARGUMENT - if the text is null</li> |
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553 * </ul> |
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554 * @exception DWTException <ul> |
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555 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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|
556 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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557 * </ul> |
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558 */ |
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559 public void setMessage (String string) { |
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560 checkWidget (); |
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561 if (string is null) error (DWT.ERROR_NULL_ARGUMENT); |
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562 if (layoutMessage !is null) layoutMessage.dispose(); |
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563 layoutMessage = null; |
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564 if (string.length () !is 0) { |
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565 Display display = getDisplay (); |
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566 layoutMessage = new TextLayout (display); |
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567 layoutMessage.setText (string); |
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568 } |
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569 if (tip.getVisible ()) configure (); |
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570 } |
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571 |
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572 /** |
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573 * Sets the receiver's text. |
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574 * |
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575 * @param string the new text |
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576 * |
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577 * @exception IllegalArgumentException <ul> |
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578 * <li>ERROR_NULL_ARGUMENT - if the text is null</li> |
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579 * </ul> |
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580 * @exception DWTException <ul> |
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581 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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582 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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583 * </ul> |
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584 */ |
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585 public void setText (String string) { |
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586 checkWidget (); |
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587 if (string is null) error (DWT.ERROR_NULL_ARGUMENT); |
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588 if (layoutText !is null) layoutText.dispose (); |
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589 layoutText = null; |
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590 if (boldFont !is null) boldFont.dispose (); |
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591 boldFont = null; |
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592 if (string.length () !is 0) { |
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593 Display display = getDisplay (); |
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594 layoutText = new TextLayout (display); |
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595 layoutText.setText (string); |
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596 Font font = display.getSystemFont (); |
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597 FontData data = font.getFontData () [0]; |
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598 boldFont = new Font (display, data.getName (), data.getHeight (), DWT.BOLD); |
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599 TextStyle style = new TextStyle (boldFont, null, null); |
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600 layoutText.setStyle (style, 0, string.length ()); |
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601 } |
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602 if (tip.getVisible ()) configure (); |
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603 } |
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604 |
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605 /** |
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606 * Marks the receiver as visible if the argument is <code>true</code>, |
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607 * and marks it invisible otherwise. |
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608 * <p> |
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609 * If one of the receiver's ancestors is not visible or some |
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610 * other condition makes the receiver not visible, marking |
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611 * it visible may not actually cause it to be displayed. |
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612 * </p> |
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613 * |
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614 * @param visible the new visibility state |
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615 * |
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616 * @exception DWTException <ul> |
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617 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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618 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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619 * </ul> |
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620 */ |
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621 public void setVisible (bool visible) { |
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622 if (visible) configure (); |
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623 tip.setVisible (visible); |
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624 Display display = getDisplay (); |
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625 if (runnable !is null) display.timerExec (-1, runnable); |
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626 runnable = null; |
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627 if (autohide && visible) { |
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628 runnable = new Runnable () { |
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629 public void run () { |
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630 if (!isDisposed ()) setVisible (false); |
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|
631 } |
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632 }; |
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633 display.timerExec(DELAY, runnable); |
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634 } |
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|
635 } |
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|
636 |
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637 } |