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annotate dwt/custom/CLabel.d @ 0:380af2bdd8e5
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author | Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> |
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date | Sat, 09 Aug 2008 17:00:02 +0200 |
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children | f565d3a95c0a |
rev | line source |
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0
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1 /******************************************************************************* |
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2 * Copyright (c) 2000, 2006 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 * Port to the D Programming language: |
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12 * Jacob Carlborg <jacob.carlborg@gmail.com> |
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13 *******************************************************************************/ |
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14 module dwt.custom.CLabel; |
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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.accessibility.ACC; |
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19 import dwt.accessibility.Accessible; |
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20 import dwt.accessibility.AccessibleAdapter; |
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21 import dwt.accessibility.AccessibleControlAdapter; |
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22 import dwt.accessibility.AccessibleControlEvent; |
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23 import dwt.accessibility.AccessibleEvent; |
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24 import dwt.events.DisposeEvent; |
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25 import dwt.events.DisposeListener; |
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26 import dwt.events.PaintEvent; |
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27 import dwt.events.PaintListener; |
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28 import dwt.events.TraverseEvent; |
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29 import dwt.events.TraverseListener; |
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30 import dwt.graphics.Color; |
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31 import dwt.graphics.Font; |
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32 import dwt.graphics.GC; |
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33 import dwt.graphics.Image; |
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34 import dwt.graphics.Point; |
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35 import dwt.graphics.Rectangle; |
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36 import dwt.graphics.TextLayout; |
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37 import dwt.widgets.Canvas; |
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38 import dwt.widgets.Composite; |
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39 import dwt.widgets.Control; |
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40 import dwt.widgets.Display; |
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41 |
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42 import dwt.dwthelper.utils; |
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43 |
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44 /** |
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45 * A Label which supports aligned text and/or an image and different border styles. |
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46 * <p> |
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47 * If there is not enough space a CLabel uses the following strategy to fit the |
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48 * information into the available space: |
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49 * <pre> |
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50 * ignores the indent in left align mode |
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51 * ignores the image and the gap |
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52 * shortens the text by replacing the center portion of the label with an ellipsis |
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53 * shortens the text by removing the center portion of the label |
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54 * </pre> |
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55 * <p> |
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56 * <dl> |
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57 * <dt><b>Styles:</b> |
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58 * <dd>LEFT, RIGHT, CENTER, SHADOW_IN, SHADOW_OUT, SHADOW_NONE</dd> |
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59 * <dt><b>Events:</b> |
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60 * <dd></dd> |
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61 * </dl> |
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62 * |
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63 * </p><p> |
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64 * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
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65 * </p> |
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66 */ |
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67 public class CLabel : Canvas |
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68 { |
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69 |
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70 /** Gap between icon and text */ |
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71 private static const int GAP = 5; |
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72 /** Left and right margins */ |
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73 private static const int INDENT = 3; |
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74 /** a String inserted in the middle of text that has been shortened */ |
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75 private static const String ELLIPSIS = "..."; //$NON-NLS-1$ // could use the ellipsis glyph on some platforms "\u2026" |
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76 /** the alignnment. Either CENTER, RIGHT, LEFT. Default is LEFT*/ |
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77 private int alignn = DWT.LEFT; |
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78 private int hIndent = INDENT; |
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79 private int vIndent = INDENT; |
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80 /** the current text */ |
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81 private String text; |
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82 /** the current icon */ |
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83 private Image image; |
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84 // The tooltip is used for two purposes - the application can set |
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85 // a tooltip or the tooltip can be used to display the full text when the |
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86 // the text has been truncated due to the label being too short. |
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87 // The appToolTip stores the tooltip set by the application. Control.tooltiptext |
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88 // contains whatever tooltip is currently being displayed. |
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89 private String appToolTipText; |
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90 |
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91 private Image backgroundImage; |
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92 private Color[] gradientColors; |
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93 private int[] gradientPercents; |
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94 private bool gradientVertical; |
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95 private Color background; |
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96 |
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97 private static int |
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98 DRAW_FLAGS = DWT.DRAW_MNEMONIC | DWT.DRAW_TAB | DWT.DRAW_TRANSPARENT | DWT.DRAW_DELIMITER; |
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99 |
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100 /** |
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101 * Constructs a new instance of this class given its parent |
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102 * and a style value describing its behavior and appearance. |
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103 * <p> |
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104 * The style value is either one of the style constants defined in |
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105 * class <code>DWT</code> which is applicable to instances of this |
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106 * class, or must be built by <em>bitwise OR</em>'ing together |
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107 * (that is, using the <code>int</code> "|" operator) two or more |
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108 * of those <code>DWT</code> style constants. The class description |
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109 * lists the style constants that are applicable to the class. |
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110 * Style bits are also inherited from superclasses. |
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111 * </p> |
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112 * |
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113 * @param parent a widget which will be the parent of the new instance (cannot be null) |
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114 * @param style the style of widget to construct |
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115 * |
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116 * @exception IllegalArgumentException <ul> |
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117 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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118 * </ul> |
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119 * @exception DWTException <ul> |
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120 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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121 * </ul> |
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122 * |
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123 * @see DWT#LEFT |
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124 * @see DWT#RIGHT |
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125 * @see DWT#CENTER |
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126 * @see DWT#SHADOW_IN |
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127 * @see DWT#SHADOW_OUT |
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128 * @see DWT#SHADOW_NONE |
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129 * @see #getStyle() |
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130 */ |
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131 public this (Composite parent, int style) |
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132 { |
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133 super(parent, checkStyle(style)); |
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134 if ((style & (DWT.CENTER | DWT.RIGHT)) is 0) |
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135 style |= DWT.LEFT; |
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136 if ((style & DWT.CENTER) !is 0) |
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137 alignn = DWT.CENTER; |
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138 if ((style & DWT.RIGHT) !is 0) |
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139 alignn = DWT.RIGHT; |
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140 if ((style & DWT.LEFT) !is 0) |
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141 alignn = DWT.LEFT; |
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142 |
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143 addPaintListener(new class PaintListener |
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144 { |
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145 public void paintControl (PaintEvent event) |
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146 { |
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147 onPaint(event); |
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148 } |
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149 }); |
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150 |
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151 addDisposeListener(new class DisposeListener |
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152 { |
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153 public void widgetDisposed (DisposeEvent event) |
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154 { |
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155 onDispose(event); |
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156 } |
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157 }); |
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158 |
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159 addTraverseListener(new class TraverseListener |
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160 { |
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161 public void keyTraversed (TraverseEvent event) |
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162 { |
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163 if (event.detail is DWT.TRAVERSE_MNEMONIC) |
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164 { |
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165 onMnemonic(event); |
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166 } |
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167 } |
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168 }); |
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169 |
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170 initAccessible(); |
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171 |
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172 } |
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173 |
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174 /** |
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175 * Check the style bits to ensure that no invalid styles are applied. |
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176 */ |
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177 private static int checkStyle (int style) |
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178 { |
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179 if ((style & DWT.BORDER) !is 0) |
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180 style |= DWT.SHADOW_IN; |
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181 int |
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182 mask = DWT.SHADOW_IN | DWT.SHADOW_OUT | DWT.SHADOW_NONE | DWT.LEFT_TO_RIGHT | DWT.RIGHT_TO_LEFT; |
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183 style = style & mask; |
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184 return style |= DWT.NO_FOCUS | DWT.DOUBLE_BUFFERED; |
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185 } |
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186 |
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187 //protected void checkSubclass () { |
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188 // String name = getClass().getName (); |
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189 // String validName = CLabel.class.getName(); |
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190 // if (!validName.opEquals(name)) { |
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191 // DWT.error (DWT.ERROR_INVALID_SUBCLASS); |
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192 // } |
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193 //} |
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194 |
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195 public Point computeSize (int wHint, int hHint, bool changed) |
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196 { |
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197 checkWidget(); |
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198 Point e = getTotalSize(image, text); |
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199 if (wHint is DWT.DEFAULT) |
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200 { |
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201 e.x += 2 * hIndent; |
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202 } |
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203 else |
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204 { |
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205 e.x = wHint; |
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206 } |
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207 if (hHint is DWT.DEFAULT) |
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208 { |
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209 e.y += 2 * vIndent; |
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210 } |
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211 else |
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212 { |
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213 e.y = hHint; |
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214 } |
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215 return e; |
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216 } |
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217 |
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218 /** |
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219 * Draw a rectangle in the given colors. |
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220 */ |
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221 private void drawBevelRect (GC gc, int x, int y, int w, int h, |
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222 Color topleft, Color bottomright) |
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223 { |
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224 gc.setForeground(bottomright); |
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225 gc.drawLine(x + w, y, x + w, y + h); |
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226 gc.drawLine(x, y + h, x + w, y + h); |
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227 |
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228 gc.setForeground(topleft); |
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229 gc.drawLine(x, y, x + w - 1, y); |
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230 gc.drawLine(x, y, x, y + h - 1); |
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231 } |
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232 |
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233 /* |
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234 * Return the lowercase of the first non-'&' character following |
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235 * an '&' character in the given String. If there are no '&' |
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236 * characters in the given String, return '\0'. |
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237 */ |
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238 char _findMnemonic (String str) |
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239 { |
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240 if (str is null) |
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241 return '\0'; |
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242 int index = 0; |
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243 int length = str.length(); |
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244 do |
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245 { |
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246 while (index < length && str.charAt(index) !is '&') |
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247 index++; |
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248 if (++index >= length) |
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249 return '\0'; |
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250 if (str.charAt(index) !is '&') |
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251 return CharacterToLower(str.charAt(index)); |
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252 index++; |
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253 } while (index < length); |
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254 return '\0'; |
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255 } |
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256 |
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257 /** |
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258 * Returns the alignnment. |
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259 * The alignnment style (LEFT, CENTER or RIGHT) is returned. |
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260 * |
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261 * @return DWT.LEFT, DWT.RIGHT or DWT.CENTER |
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262 */ |
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263 public int getAlignment () |
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264 { |
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265 //checkWidget(); |
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266 return alignn; |
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267 } |
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268 |
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269 /** |
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270 * Return the CLabel's image or <code>null</code>. |
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271 * |
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272 * @return the image of the label or null |
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273 */ |
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274 public Image getImage () |
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275 { |
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276 //checkWidget(); |
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277 return image; |
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278 } |
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279 |
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280 /** |
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281 * Compute the minimum size. |
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282 */ |
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283 private Point getTotalSize (Image image, String text) |
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284 { |
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285 Point size = new Point(0, 0); |
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286 |
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287 if (image !is null) |
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288 { |
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289 Rectangle r = image.getBounds(); |
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290 size.x += r.width; |
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291 size.y += r.height; |
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292 } |
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293 |
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294 GC gc = new GC(this); |
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295 if (text !is null && text.length() > 0) |
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296 { |
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297 Point e = gc.textExtent(text, DRAW_FLAGS); |
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298 size.x += e.x; |
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299 size.y = Math.max(size.y, e.y); |
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300 if (image !is null) |
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301 size.x += GAP; |
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302 } |
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303 else |
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304 { |
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305 size.y = Math.max(size.y, gc.getFontMetrics().getHeight()); |
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306 } |
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307 gc.dispose(); |
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308 |
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309 return size; |
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310 } |
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311 |
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312 public int getStyle () |
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313 { |
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314 int style = super.getStyle(); |
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315 switch (alignn) |
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316 { |
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317 case DWT.RIGHT: |
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318 style |= DWT.RIGHT; |
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319 break; |
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320 case DWT.CENTER: |
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321 style |= DWT.CENTER; |
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322 break; |
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323 case DWT.LEFT: |
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324 style |= DWT.LEFT; |
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325 break; |
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326 } |
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327 return style; |
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328 } |
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329 |
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330 /** |
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331 * Return the Label's text. |
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332 * |
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333 * @return the text of the label or null |
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334 */ |
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335 public String getText () |
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336 { |
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337 //checkWidget(); |
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338 return text; |
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339 } |
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340 |
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341 public String getToolTipText () |
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342 { |
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343 checkWidget(); |
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344 return appToolTipText; |
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345 } |
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346 |
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347 private void initAccessible () |
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348 { |
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349 Accessible accessible = getAccessible(); |
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350 accessible.addAccessibleListener(new class AccessibleAdapter |
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351 { |
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352 public void getName (AccessibleEvent e) |
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353 { |
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354 e.result = getText(); |
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355 } |
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356 |
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357 public void getHelp (AccessibleEvent e) |
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358 { |
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359 e.result = getToolTipText(); |
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360 } |
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361 |
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362 public void getKeyboardShortcut (AccessibleEvent e) |
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363 { |
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364 char mnemonic = _findMnemonic(this.text); |
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365 if (mnemonic !is '\0') |
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366 { |
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367 e.result = "Alt+" + mnemonic; //$NON-NLS-1$ |
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368 } |
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369 } |
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370 } ); |
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371 |
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372 accessible.addAccessibleControlListener(new class |
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373 AccessibleControlAdapter |
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374 { |
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375 public void getChildAtPoint (AccessibleControlEvent e) |
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376 { |
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377 e.childID = ACC.CHILDID_SELF; |
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378 } |
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379 |
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380 public void getLocation (AccessibleControlEvent e) |
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381 { |
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382 Rectangle rect = getDisplay().map(getParent(), null, |
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383 getBounds()); |
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384 e.x = rect.x; |
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385 e.y = rect.y; |
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386 e.width = rect.width; |
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387 e.height = rect.height; |
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388 } |
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389 |
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390 public void getChildCount (AccessibleControlEvent e) |
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391 { |
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392 e.detail = 0; |
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393 } |
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394 |
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395 public void getRole (AccessibleControlEvent e) |
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396 { |
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397 e.detail = ACC.ROLE_LABEL; |
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398 } |
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399 |
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400 public void getState (AccessibleControlEvent e) |
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401 { |
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402 e.detail = ACC.STATE_READONLY; |
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403 } |
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404 }); |
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405 } |
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406 |
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407 void onDispose (DisposeEvent event) |
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408 { |
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409 gradientColors = null; |
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410 gradientPercents = null; |
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411 backgroundImage = null; |
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412 text = null; |
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413 image = null; |
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414 appToolTipText = null; |
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415 } |
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416 |
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417 void onMnemonic (TraverseEvent event) |
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418 { |
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419 char mnemonic = _findMnemonic(text); |
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420 if (mnemonic is '\0') |
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421 return; |
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422 if (CharacterToLower(event.character) !is mnemonic) |
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423 return; |
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424 Composite control = this.getParent(); |
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425 while (control !is null) |
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426 { |
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427 Control[] children = control.getChildren(); |
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428 int index = 0; |
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429 while (index < children.length) |
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430 { |
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431 if (children[index] is this) |
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432 break; |
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433 index++; |
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434 } |
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435 index++; |
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436 if (index < children.length) |
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437 { |
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438 if (children[index].setFocus()) |
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439 { |
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440 event.doit = true; |
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441 event.detail = DWT.TRAVERSE_NONE; |
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442 } |
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443 } |
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444 control = control.getParent(); |
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445 } |
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|
446 } |
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447 |
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448 void onPaint (PaintEvent event) |
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449 { |
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450 Rectangle rect = getClientArea(); |
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451 if (rect.width is 0 || rect.height is 0) |
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452 return; |
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|
453 |
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454 bool shortenText = false; |
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455 String t = text; |
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456 Image img = image; |
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457 int availableWidth = Math.max(0, rect.width - 2 * hIndent); |
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458 Point extent = getTotalSize(img, t); |
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parents:
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459 if (extent.x > availableWidth) |
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|
460 { |
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parents:
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461 img = null; |
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462 extent = getTotalSize(img, t); |
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463 if (extent.x > availableWidth) |
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parents:
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|
464 { |
380af2bdd8e5
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parents:
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465 shortenText = true; |
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|
466 } |
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parents:
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|
467 } |
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parents:
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|
468 |
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parents:
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469 GC gc = event.gc; |
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470 String[] lines = text is null ? null : splitString(text); |
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parents:
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|
471 |
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parents:
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|
472 // shorten the text |
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parents:
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473 if (shortenText) |
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parents:
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|
474 { |
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parents:
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|
475 extent.x = 0; |
380af2bdd8e5
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
476 for (int i = 0; i < lines.length; i++) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
477 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
478 Point e = gc.textExtent(lines[i], DRAW_FLAGS); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
479 if (e.x > availableWidth) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
480 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
481 lines[i] = shortenText(gc, lines[i], availableWidth); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
482 extent.x = Math.max(extent.x, |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
483 getTotalSize(null, lines[i]).x); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
484 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
485 else |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
486 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
487 extent.x = Math.max(extent.x, e.x); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
488 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
489 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
490 if (appToolTipText is null) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
491 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
492 super.setToolTipText(text); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
493 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
494 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
495 else |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
496 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
497 super.setToolTipText(appToolTipText); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
498 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
499 |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
500 // determine horizontal position |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
501 int x = rect.x + hIndent; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
502 if (alignn is DWT.CENTER) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
503 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
504 x = (rect.width - extent.x) / 2; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
505 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
506 if (alignn is DWT.RIGHT) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
507 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
508 x = rect.width - hIndent - extent.x; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
509 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
510 |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
511 // draw a background image behind the text |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
512 try |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
513 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
514 if (backgroundImage !is null) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
515 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
516 // draw a background image behind the text |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
517 Rectangle imageRect = backgroundImage.getBounds(); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
518 // tile image to fill space |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
519 gc.setBackground(getBackground()); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
520 gc.fillRectangle(rect); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
521 int xPos = 0; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
522 while (xPos < rect.width) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
523 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
524 int yPos = 0; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
525 while (yPos < rect.height) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
526 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
527 gc.drawImage(backgroundImage, xPos, yPos); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
528 yPos += imageRect.height; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
529 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
530 xPos += imageRect.width; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
531 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
532 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
533 else if (gradientColors !is null) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
534 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
535 // draw a gradient behind the text |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
536 const Color oldBackground = gc.getBackground(); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
537 if (gradientColors.length is 1) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
538 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
539 if (gradientColors[0] !is null) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
540 gc.setBackground(gradientColors[0]); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
541 gc.fillRectangle(0, 0, rect.width, rect.height); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
542 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
543 else |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
544 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
545 const Color oldForeground = gc.getForeground(); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
546 Color lastColor = gradientColors[0]; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
547 if (lastColor is null) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
548 lastColor = oldBackground; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
549 int pos = 0; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
550 for (int i = 0; i < gradientPercents.length; ++i) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
551 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
552 gc.setForeground(lastColor); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
553 lastColor = gradientColors[i + 1]; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
554 if (lastColor is null) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
555 lastColor = oldBackground; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
556 gc.setBackground(lastColor); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
557 if (gradientVertical) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
558 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
559 const int |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
560 gradientHeight = (gradientPercents[i] * rect.height / 100) - pos; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
561 gc.fillGradientRectangle(0, pos, rect.width, |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
562 gradientHeight, true); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
563 pos += gradientHeight; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
564 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
565 else |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
566 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
567 const int |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
568 gradientWidth = (gradientPercents[i] * rect.width / 100) - pos; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
569 gc.fillGradientRectangle(pos, 0, gradientWidth, |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
570 rect.height, false); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
571 pos += gradientWidth; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
572 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
573 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
574 if (gradientVertical && pos < rect.height) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
575 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
576 gc.setBackground(getBackground()); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
577 gc.fillRectangle(0, pos, rect.width, rect.height - pos); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
578 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
579 if (!gradientVertical && pos < rect.width) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
580 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
581 gc.setBackground(getBackground()); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
582 gc.fillRectangle(pos, 0, rect.width - pos, rect.height); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
583 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
584 gc.setForeground(oldForeground); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
585 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
586 gc.setBackground(oldBackground); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
587 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
588 else |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
589 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
590 if (background !is null || (getStyle() & DWT.DOUBLE_BUFFERED) is 0) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
591 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
592 gc.setBackground(getBackground()); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
593 gc.fillRectangle(rect); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
594 } |
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parents:
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changeset
|
595 } |
380af2bdd8e5
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parents:
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|
596 } |
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parents:
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|
597 catch (DWTException e) |
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parents:
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|
598 { |
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parents:
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|
599 if ((getStyle() & DWT.DOUBLE_BUFFERED) is 0) |
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parents:
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|
600 { |
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parents:
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|
601 gc.setBackground(getBackground()); |
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parents:
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602 gc.fillRectangle(rect); |
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parents:
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|
603 } |
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parents:
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|
604 } |
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parents:
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|
605 |
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parents:
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|
606 // draw border |
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parents:
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607 int style = getStyle(); |
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parents:
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608 if ((style & DWT.SHADOW_IN) !is 0 || (style & DWT.SHADOW_OUT) !is 0) |
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parents:
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609 { |
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parents:
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610 paintBorder(gc, rect); |
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parents:
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|
611 } |
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parents:
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|
612 |
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parents:
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613 // draw the image |
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parents:
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614 if (img !is null) |
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615 { |
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parents:
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616 Rectangle imageRect = img.getBounds(); |
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617 gc.drawImage(img, 0, 0, imageRect.width, imageRect.height, x, |
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618 (rect.height - imageRect.height) / 2, imageRect.width, |
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parents:
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619 imageRect.height); |
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620 x += imageRect.width + GAP; |
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parents:
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621 extent.x -= imageRect.width + GAP; |
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622 } |
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parents:
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|
623 // draw the text |
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|
624 if (lines !is null) |
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625 { |
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parents:
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|
626 int lineHeight = gc.getFontMetrics().getHeight(); |
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parents:
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627 int textHeight = lines.length * lineHeight; |
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parents:
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628 int lineY = Math.max(vIndent, |
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parents:
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|
629 rect.y + (rect.height - textHeight) / 2); |
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parents:
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630 gc.setForeground(getForeground()); |
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parents:
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|
631 for (int i = 0; i < lines.length; i++) |
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parents:
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|
632 { |
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parents:
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633 int lineX = x; |
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parents:
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634 if (lines.length > 1) |
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parents:
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|
635 { |
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parents:
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|
636 if (alignn is DWT.CENTER) |
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parents:
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|
637 { |
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parents:
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|
638 int lineWidth = gc.textExtent(lines[i], DRAW_FLAGS).x; |
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parents:
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639 lineX = x + Math.max(0, (extent.x - lineWidth) / 2); |
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parents:
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|
640 } |
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parents:
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|
641 if (alignn is DWT.RIGHT) |
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parents:
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|
642 { |
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parents:
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changeset
|
643 int lineWidth = gc.textExtent(lines[i], DRAW_FLAGS).x; |
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parents:
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|
644 lineX = Math.max(x, |
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parents:
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|
645 rect.x + rect.width - hIndent - lineWidth); |
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parents:
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|
646 } |
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parents:
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|
647 } |
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parents:
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|
648 gc.drawText(lines[i], lineX, lineY, DRAW_FLAGS); |
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parents:
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649 lineY += lineHeight; |
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parents:
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|
650 } |
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parents:
diff
changeset
|
651 } |
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parents:
diff
changeset
|
652 } |
380af2bdd8e5
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parents:
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|
653 |
380af2bdd8e5
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parents:
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|
654 /** |
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parents:
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changeset
|
655 * Paint the Label's border. |
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parents:
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|
656 */ |
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parents:
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|
657 private void paintBorder (GC gc, Rectangle r) |
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parents:
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|
658 { |
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parents:
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changeset
|
659 Display disp = getDisplay(); |
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parents:
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|
660 |
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parents:
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|
661 Color c1 = null; |
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parents:
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|
662 Color c2 = null; |
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parents:
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|
663 |
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parents:
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changeset
|
664 int style = getStyle(); |
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parents:
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changeset
|
665 if ((style & DWT.SHADOW_IN) !is 0) |
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parents:
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|
666 { |
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parents:
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changeset
|
667 c1 = disp.getSystemColor(DWT.COLOR_WIDGET_NORMAL_SHADOW); |
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parents:
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|
668 c2 = disp.getSystemColor(DWT.COLOR_WIDGET_HIGHLIGHT_SHADOW); |
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parents:
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|
669 } |
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parents:
diff
changeset
|
670 if ((style & DWT.SHADOW_OUT) !is 0) |
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parents:
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|
671 { |
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parents:
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changeset
|
672 c1 = disp.getSystemColor(DWT.COLOR_WIDGET_LIGHT_SHADOW); |
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parents:
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changeset
|
673 c2 = disp.getSystemColor(DWT.COLOR_WIDGET_NORMAL_SHADOW); |
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parents:
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|
674 } |
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parents:
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changeset
|
675 |
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parents:
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changeset
|
676 if (c1 !is null && c2 !is null) |
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parents:
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|
677 { |
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parents:
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|
678 gc.setLineWidth(1); |
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|
679 drawBevelRect(gc, r.x, r.y, r.width - 1, r.height - 1, c1, c2); |
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parents:
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|
680 } |
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parents:
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|
681 } |
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parents:
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|
682 |
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parents:
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changeset
|
683 /** |
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parents:
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changeset
|
684 * Set the alignnment of the CLabel. |
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parents:
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|
685 * Use the values LEFT, CENTER and RIGHT to alignn image and text within the available space. |
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|
686 * |
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|
687 * @param alignn the alignnment style of LEFT, RIGHT or CENTER |
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|
688 * |
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parents:
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|
689 * @exception DWTException <ul> |
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parents:
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|
690 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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|
691 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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|
692 * <li>ERROR_INVALID_ARGUMENT - if the value of alignn is not one of DWT.LEFT, DWT.RIGHT or DWT.CENTER</li> |
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|
693 * </ul> |
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|
694 */ |
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|
695 public void setAlignment (int alignn) |
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|
696 { |
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changeset
|
697 checkWidget(); |
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|
698 if (alignn !is DWT.LEFT && alignn !is DWT.RIGHT && alignn !is DWT.CENTER) |
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|
699 { |
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|
700 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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parents:
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changeset
|
701 } |
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parents:
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changeset
|
702 if (this.alignn !is alignn) |
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parents:
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changeset
|
703 { |
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|
704 this.alignn = alignn; |
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|
705 redraw(); |
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parents:
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changeset
|
706 } |
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parents:
diff
changeset
|
707 } |
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parents:
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changeset
|
708 |
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|
709 public void setBackground (Color color) |
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|
710 { |
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changeset
|
711 super.setBackground(color); |
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changeset
|
712 // Are these settings the same as before? |
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parents:
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changeset
|
713 if (backgroundImage is null && gradientColors is null && gradientPercents is null) |
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changeset
|
714 { |
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|
715 if (color is null) |
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changeset
|
716 { |
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|
717 if (background is null) |
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parents:
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|
718 return; |
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parents:
diff
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|
719 } |
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changeset
|
720 else |
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changeset
|
721 { |
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|
722 if (color.opEquals(background)) |
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parents:
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|
723 return; |
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parents:
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|
724 } |
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|
725 } |
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parents:
diff
changeset
|
726 background = color; |
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parents:
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changeset
|
727 backgroundImage = null; |
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changeset
|
728 gradientColors = null; |
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parents:
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changeset
|
729 gradientPercents = null; |
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|
730 redraw(); |
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parents:
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|
731 } |
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parents:
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|
732 |
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parents:
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changeset
|
733 /** |
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parents:
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|
734 * Specify a gradient of colours to be drawn in the background of the CLabel. |
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parents:
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735 * <p>For example, to draw a gradient that varies from dark blue to blue and then to |
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|
736 * white and stays white for the right half of the label, use the following call |
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parents:
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|
737 * to setBackground:</p> |
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parents:
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changeset
|
738 * <pre> |
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739 * clabel.setBackground(new Color[]{display.getSystemColor(DWT.COLOR_DARK_BLUE), |
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740 * display.getSystemColor(DWT.COLOR_BLUE), |
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|
741 * display.getSystemColor(DWT.COLOR_WHITE), |
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|
742 * display.getSystemColor(DWT.COLOR_WHITE)}, |
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parents:
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|
743 * new int[] {25, 50, 100}); |
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parents:
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|
744 * </pre> |
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|
745 * |
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|
746 * @param colors an array of Color that specifies the colors to appear in the gradient |
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|
747 * in order of appearance from left to right; The value <code>null</code> |
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748 * clears the background gradient; the value <code>null</code> can be used |
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749 * inside the array of Color to specify the background color. |
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|
750 * @param percents an array of integers between 0 and 100 specifying the percent of the width |
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|
751 * of the widget at which the color should change; the size of the percents |
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parents:
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|
752 * array must be one less than the size of the colors array. |
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parents:
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changeset
|
753 * |
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parents:
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|
754 * @exception DWTException <ul> |
380af2bdd8e5
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parents:
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|
755 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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parents:
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|
756 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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|
757 * <li>ERROR_INVALID_ARGUMENT - if the values of colors and percents are not consistent</li> |
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|
758 * </ul> |
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parents:
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changeset
|
759 */ |
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parents:
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|
760 public void setBackground (Color[] colors, int[] percents) |
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|
761 { |
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parents:
diff
changeset
|
762 setBackground(colors, percents, false); |
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parents:
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|
763 } |
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|
764 |
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
765 /** |
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parents:
diff
changeset
|
766 * Specify a gradient of colours to be drawn in the background of the CLabel. |
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parents:
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|
767 * <p>For example, to draw a gradient that varies from dark blue to white in the vertical, |
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parents:
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changeset
|
768 * direction use the following call |
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parents:
diff
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|
769 * to setBackground:</p> |
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
770 * <pre> |
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parents:
diff
changeset
|
771 * clabel.setBackground(new Color[]{display.getSystemColor(DWT.COLOR_DARK_BLUE), |
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|
772 * display.getSystemColor(DWT.COLOR_WHITE)}, |
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parents:
diff
changeset
|
773 * new int[] {100}, true); |
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
774 * </pre> |
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parents:
diff
changeset
|
775 * |
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parents:
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|
776 * @param colors an array of Color that specifies the colors to appear in the gradient |
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
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|
777 * in order of appearance from left/top to right/bottom; The value <code>null</code> |
380af2bdd8e5
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
778 * clears the background gradient; the value <code>null</code> can be used |
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
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|
779 * inside the array of Color to specify the background color. |
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
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changeset
|
780 * @param percents an array of integers between 0 and 100 specifying the percent of the width/height |
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parents:
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|
781 * of the widget at which the color should change; the size of the percents |
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|
782 * array must be one less than the size of the colors array. |
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parents:
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|
783 * @param vertical indicate the direction of the gradient. True is vertical and false is horizontal. |
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|
784 * |
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|
785 * @exception DWTException <ul> |
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|
786 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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parents:
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|
787 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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|
788 * <li>ERROR_INVALID_ARGUMENT - if the values of colors and percents are not consistent</li> |
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|
789 * </ul> |
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parents:
diff
changeset
|
790 * |
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parents:
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changeset
|
791 * @since 3.0 |
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|
792 */ |
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parents:
diff
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|
793 public void setBackground (Color[] colors, int[] percents, bool vertical) |
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|
794 { |
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changeset
|
795 checkWidget(); |
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parents:
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changeset
|
796 if (colors !is null) |
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changeset
|
797 { |
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parents:
diff
changeset
|
798 if (percents is null || percents.length !is colors.length - 1) |
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
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changeset
|
799 { |
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parents:
diff
changeset
|
800 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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diff
changeset
|
801 } |
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changeset
|
802 if (getDisplay().getDepth() < 15) |
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diff
changeset
|
803 { |
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parents:
diff
changeset
|
804 // Don't use gradients on low color displays |
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|
805 colors = new Color[][colors[colors.length - 1]]; |
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|
806 percents = new int[][]; |
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changeset
|
807 } |
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parents:
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changeset
|
808 for (int i = 0; i < percents.length; i++) |
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parents:
diff
changeset
|
809 { |
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parents:
diff
changeset
|
810 if (percents[i] < 0 || percents[i] > 100) |
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parents:
diff
changeset
|
811 { |
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parents:
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changeset
|
812 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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parents:
diff
changeset
|
813 } |
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changeset
|
814 if (i > 0 && percents[i] < percents[i - 1]) |
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diff
changeset
|
815 { |
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parents:
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changeset
|
816 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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changeset
|
817 } |
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parents:
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changeset
|
818 } |
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parents:
diff
changeset
|
819 } |
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parents:
diff
changeset
|
820 |
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parents:
diff
changeset
|
821 // Are these settings the same as before? |
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parents:
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changeset
|
822 const Color background = getBackground(); |
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changeset
|
823 if (backgroundImage is null) |
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changeset
|
824 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
825 if ((gradientColors !is null) && (colors !is null) && (gradientColors.length is colors.length)) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
826 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
827 bool same = false; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
828 for (int i = 0; i < gradientColors.length; i++) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
829 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
830 same = (gradientColors[i] is colors[i]) || ((gradientColors[i] is null) && (colors[i] is background)) || ((gradientColors[i] is background) && (colors[i] is null)); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
831 if (!same) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
832 break; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
833 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
834 if (same) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
835 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
836 for (int i = 0; i < gradientPercents.length; i++) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
837 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
838 same = gradientPercents[i] is percents[i]; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
839 if (!same) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
840 break; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
841 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
842 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
843 if (same && this.gradientVertical is vertical) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
844 return; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
845 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
846 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
847 else |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
848 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
849 backgroundImage = null; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
850 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
851 // Store the new settings |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
852 if (colors is null) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
853 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
854 gradientColors = null; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
855 gradientPercents = null; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
856 gradientVertical = false; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
857 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
858 else |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
859 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
860 gradientColors = new Color[colors.length]; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
861 for (int i = 0; i < colors.length; ++i) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
862 gradientColors[i] = (colors[i] !is null) ? colors[i] : background; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
863 gradientPercents = new int[percents.length]; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
864 for (int i = 0; i < percents.length; ++i) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
865 gradientPercents[i] = percents[i]; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
866 gradientVertical = vertical; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
867 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
868 // Refresh with the new settings |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
869 redraw(); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
870 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
871 |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
872 /** |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
873 * Set the image to be drawn in the background of the label. |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
874 * |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
875 * @param image the image to be drawn in the background |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
876 * |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
877 * @exception DWTException <ul> |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
878 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
879 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
880 * </ul> |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
881 */ |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
882 public void setBackground (Image image) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
883 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
884 checkWidget(); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
885 if (image is backgroundImage) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
886 return; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
887 if (image !is null) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
888 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
889 gradientColors = null; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
890 gradientPercents = null; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
891 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
892 backgroundImage = image; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
893 redraw(); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
894 |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
895 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
896 |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
897 public void setFont (Font font) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
898 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
899 super.setFont(font); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
900 redraw(); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
901 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
902 |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
903 /** |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
904 * Set the label's Image. |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
905 * The value <code>null</code> clears it. |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
906 * |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
907 * @param image the image to be displayed in the label or null |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
908 * |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
909 * @exception DWTException <ul> |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
910 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
911 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
912 * </ul> |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
913 */ |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
914 public void setImage (Image image) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
915 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
916 checkWidget(); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
917 if (image !is this.image) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
918 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
919 this.image = image; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
920 redraw(); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
921 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
922 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
923 |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
924 /** |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
925 * Set the label's text. |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
926 * The value <code>null</code> clears it. |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
927 * |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
928 * @param text the text to be displayed in the label or null |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
929 * |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
930 * @exception DWTException <ul> |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
931 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
932 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
933 * </ul> |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
934 */ |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
935 public void setText (String text) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
936 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
937 checkWidget(); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
938 if (text is null) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
939 text = ""; //$NON-NLS-1$ |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
940 if (!text.opEquals(this.text)) |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
941 { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
942 this.text = text; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
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943 redraw(); |
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944 } |
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945 } |
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946 |
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947 public void setToolTipText (String String) |
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948 { |
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949 super.setToolTipText(String); |
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950 appToolTipText = super.getToolTipText(); |
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951 } |
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952 |
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953 /** |
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954 * Shorten the given text <code>t</code> so that its length doesn't exceed |
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955 * the given width. The default implementation replaces characters in the |
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956 * center of the original String with an ellipsis ("..."). |
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957 * Override if you need a different strategy. |
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958 * |
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959 * @param gc the gc to use for text measurement |
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960 * @param t the text to shorten |
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961 * @param width the width to shorten the text to, in pixels |
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962 * @return the shortened text |
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963 */ |
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964 protected String shortenText (GC gc, String t, int width) |
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965 { |
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966 if (t is null) |
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967 return null; |
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968 int w = gc.textExtent(ELLIPSIS, DRAW_FLAGS).x; |
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969 if (width <= w) |
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970 return t; |
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971 int l = t.length(); |
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972 int max = l / 2; |
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973 int min = 0; |
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974 int mid = (max + min) / 2 - 1; |
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975 if (mid <= 0) |
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976 return t; |
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977 TextLayout layout = new TextLayout(getDisplay()); |
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978 layout.setText(t); |
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979 mid = validateOffset(layout, mid); |
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980 while (min < mid && mid < max) |
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981 { |
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982 String s1 = t.substring(0, mid); |
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983 String s2 = t.substring(validateOffset(layout, l - mid), l); |
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984 int l1 = gc.textExtent(s1, DRAW_FLAGS).x; |
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985 int l2 = gc.textExtent(s2, DRAW_FLAGS).x; |
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986 if (l1 + w + l2 > width) |
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987 { |
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988 max = mid; |
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989 mid = validateOffset(layout, (max + min) / 2); |
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990 } |
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991 else if (l1 + w + l2 < width) |
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992 { |
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993 min = mid; |
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994 mid = validateOffset(layout, (max + min) / 2); |
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995 } |
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996 else |
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|
997 { |
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998 min = max; |
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|
999 } |
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|
1000 } |
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|
1001 String |
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1002 result = mid is 0 ? t : t.substring(0, mid) + ELLIPSIS + t.substring( |
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1003 validateOffset(layout, l - mid), l); |
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1004 layout.dispose(); |
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1005 return result; |
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1006 } |
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|
1007 |
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1008 int validateOffset (TextLayout layout, int offset) |
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1009 { |
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1010 int nextOffset = layout.getNextOffset(offset, DWT.MOVEMENT_CLUSTER); |
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1011 if (nextOffset !is offset) |
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1012 return layout.getPreviousOffset(nextOffset, DWT.MOVEMENT_CLUSTER); |
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1013 return offset; |
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1014 } |
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|
1015 |
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1016 private String[] splitString (String text) |
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1017 { |
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1018 String[] lines = new String[1]; |
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1019 int start = 0, pos; |
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1020 do |
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1021 { |
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1022 pos = text.indexOf('\n', start); |
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1023 if (pos is -1) |
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1024 { |
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1025 lines[lines.length - 1] = text.substring(start); |
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1026 } |
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1027 else |
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1028 { |
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1029 bool crlf = (pos > 0) && (text.charAt(pos - 1) is '\r'); |
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1030 lines[lines.length - 1] = text.substring(start, |
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1031 pos - (crlf ? 1 : 0)); |
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1032 start = pos + 1; |
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1033 String[] newLines = new String[lines.length + 1]; |
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1034 System.arraycopy(lines, 0, newLines, 0, lines.length); |
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1035 lines = newLines; |
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1036 } |
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1037 } while (pos !is -1); |
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1038 return lines; |
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1039 } |
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1040 } |