Mercurial > projects > dwt-mac
annotate dwt/custom/ViewForm.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 | 1a8b3cb347e0 |
rev | line source |
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0
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1 /******************************************************************************* |
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2 * Copyright (c) 2000, 2007 IBM Corporation and others. |
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3 * All rights reserved. This program and the accompanying materials |
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4 * are made available under the terms of the Eclipse Public License v1.0 |
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5 * which accompanies this distribution, and is available at |
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6 * http://www.eclipse.org/legal/epl-v10.html |
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7 * |
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8 * Contributors: |
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9 * IBM Corporation - initial API and implementation |
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10 *******************************************************************************/ |
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11 module dwt.custom; |
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12 |
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13 |
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14 import dwt.graphics.*; |
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15 import dwt.widgets.*; |
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16 import dwt.*; |
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17 |
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18 /** |
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19 * Instances of this class implement a Composite that positions and sizes |
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20 * children and allows programmatic control of layout and border parameters. |
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21 * ViewForm is used in the workbench to lay out a view's label/menu/toolbar |
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22 * local bar. |
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23 * <p> |
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24 * Note that although this class is a subclass of <code>Composite</code>, |
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25 * it does not make sense to set a layout on it. |
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26 * </p><p> |
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27 * <dl> |
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28 * <dt><b>Styles:</b></dt> |
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29 * <dd>BORDER, FLAT</dd> |
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30 * <dt><b>Events:</b></dt> |
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31 * <dd>(None)</dd> |
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32 * </dl> |
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33 * <p> |
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34 * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
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35 * </p> |
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36 */ |
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37 |
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38 public class ViewForm : Composite { |
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39 |
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40 /** |
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41 * marginWidth specifies the number of pixels of horizontal margin |
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42 * that will be placed along the left and right edges of the form. |
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43 * |
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44 * The default value is 0. |
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45 */ |
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46 public int marginWidth = 0; |
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47 /** |
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48 * marginHeight specifies the number of pixels of vertical margin |
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49 * that will be placed along the top and bottom edges of the form. |
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50 * |
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51 * The default value is 0. |
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52 */ |
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53 public int marginHeight = 0; |
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54 /** |
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55 * horizontalSpacing specifies the number of pixels between the right |
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56 * edge of one cell and the left edge of its neighbouring cell to |
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57 * the right. |
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58 * |
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59 * The default value is 1. |
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60 */ |
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61 public int horizontalSpacing = 1; |
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62 /** |
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63 * verticalSpacing specifies the number of pixels between the bottom |
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64 * edge of one cell and the top edge of its neighbouring cell underneath. |
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65 * |
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66 * The default value is 1. |
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67 */ |
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68 public int verticalSpacing = 1; |
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69 |
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70 /** |
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71 * Color of innermost line of drop shadow border. |
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72 * |
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73 * NOTE This field is badly named and can not be fixed for backwards compatibility. |
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74 * It should be capitalized. |
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75 * |
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76 * @deprecated |
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77 */ |
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78 public static RGB borderInsideRGB = new RGB (132, 130, 132); |
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79 /** |
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80 * Color of middle line of drop shadow border. |
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81 * |
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82 * NOTE This field is badly named and can not be fixed for backwards compatibility. |
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83 * It should be capitalized. |
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84 * |
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85 * @deprecated |
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86 */ |
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87 public static RGB borderMiddleRGB = new RGB (143, 141, 138); |
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88 /** |
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89 * Color of outermost line of drop shadow border. |
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90 * |
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91 * NOTE This field is badly named and can not be fixed for backwards compatibility. |
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92 * It should be capitalized. |
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93 * |
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94 * @deprecated |
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95 */ |
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96 public static RGB borderOutsideRGB = new RGB (171, 168, 165); |
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97 |
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98 // DWT widgets |
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99 Control topLeft; |
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100 Control topCenter; |
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101 Control topRight; |
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102 Control content; |
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103 |
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104 // Configuration and state info |
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105 bool separateTopCenter = false; |
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106 bool showBorder = false; |
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107 |
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108 int separator = -1; |
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109 int borderTop = 0; |
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110 int borderBottom = 0; |
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111 int borderLeft = 0; |
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112 int borderRight = 0; |
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113 int highlight = 0; |
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114 Point oldSize; |
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115 |
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116 Color selectionBackground; |
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117 |
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118 static final int OFFSCREEN = -200; |
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119 static final int BORDER1_COLOR = DWT.COLOR_WIDGET_NORMAL_SHADOW; |
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120 static final int SELECTION_BACKGROUND = DWT.COLOR_LIST_BACKGROUND; |
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121 /** |
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122 * Constructs a new instance of this class given its parent |
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123 * and a style value describing its behavior and appearance. |
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124 * <p> |
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125 * The style value is either one of the style constants defined in |
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126 * class <code>DWT</code> which is applicable to instances of this |
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127 * class, or must be built by <em>bitwise OR</em>'ing together |
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128 * (that is, using the <code>int</code> "|" operator) two or more |
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129 * of those <code>DWT</code> style constants. The class description |
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130 * lists the style constants that are applicable to the class. |
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131 * Style bits are also inherited from superclasses. |
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132 * </p> |
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133 * |
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134 * @param parent a widget which will be the parent of the new instance (cannot be null) |
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135 * @param style the style of widget to construct |
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136 * |
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137 * @exception IllegalArgumentException <ul> |
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138 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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139 * </ul> |
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140 * @exception DWTException <ul> |
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141 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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142 * </ul> |
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143 * |
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144 * @see DWT#BORDER |
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145 * @see DWT#FLAT |
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146 * @see #getStyle() |
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147 */ |
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148 public ViewForm(Composite parent, int style) { |
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149 super(parent, checkStyle(style)); |
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150 super.setLayout(new ViewFormLayout()); |
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151 |
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152 setBorderVisible((style & DWT.BORDER) !is 0); |
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153 |
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154 Listener listener = new Listener() { |
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155 public void handleEvent(Event e) { |
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156 switch (e.type) { |
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157 case DWT.Dispose: onDispose(); break; |
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158 case DWT.Paint: onPaint(e.gc); break; |
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159 case DWT.Resize: onResize(); break; |
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160 } |
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161 } |
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162 }; |
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163 |
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164 int[] events = new int[] {DWT.Dispose, DWT.Paint, DWT.Resize}; |
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165 |
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166 for (int i = 0; i < events.length; i++) { |
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167 addListener(events[i], listener); |
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168 } |
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169 } |
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170 |
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171 static int checkStyle (int style) { |
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172 int mask = DWT.FLAT | DWT.LEFT_TO_RIGHT | DWT.RIGHT_TO_LEFT; |
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173 return style & mask | DWT.NO_REDRAW_RESIZE; |
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174 } |
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175 |
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176 //protected void checkSubclass () { |
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177 // String name = getClass().getName (); |
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178 // String validName = ViewForm.class.getName(); |
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179 // if (!validName.opEquals(name)) { |
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180 // DWT.error (DWT.ERROR_INVALID_SUBCLASS); |
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181 // } |
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182 //} |
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183 |
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184 public Rectangle computeTrim (int x, int y, int width, int height) { |
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185 checkWidget (); |
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186 int trimX = x - borderLeft - highlight; |
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187 int trimY = y - borderTop - highlight; |
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188 int trimWidth = width + borderLeft + borderRight + 2*highlight; |
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189 int trimHeight = height + borderTop + borderBottom + 2*highlight; |
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190 return new Rectangle(trimX, trimY, trimWidth, trimHeight); |
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191 } |
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192 public Rectangle getClientArea() { |
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193 checkWidget(); |
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194 Rectangle clientArea = super.getClientArea(); |
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195 clientArea.x += borderLeft; |
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196 clientArea.y += borderTop; |
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197 clientArea.width -= borderLeft + borderRight; |
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198 clientArea.height -= borderTop + borderBottom; |
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199 return clientArea; |
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200 } |
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201 /** |
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202 * Returns the content area. |
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203 * |
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204 * @return the control in the content area of the pane or null |
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205 */ |
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206 public Control getContent() { |
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207 //checkWidget(); |
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208 return content; |
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209 } |
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210 /** |
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211 * Returns Control that appears in the top center of the pane. |
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212 * Typically this is a toolbar. |
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213 * |
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214 * @return the control in the top center of the pane or null |
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215 */ |
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216 public Control getTopCenter() { |
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217 //checkWidget(); |
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218 return topCenter; |
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219 } |
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220 /** |
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221 * Returns the Control that appears in the top left corner of the pane. |
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222 * Typically this is a label such as CLabel. |
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223 * |
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224 * @return the control in the top left corner of the pane or null |
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225 */ |
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226 public Control getTopLeft() { |
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227 //checkWidget(); |
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228 return topLeft; |
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229 } |
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230 /** |
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231 * Returns the control in the top right corner of the pane. |
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232 * Typically this is a Close button or a composite with a Menu and Close button. |
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233 * |
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234 * @return the control in the top right corner of the pane or null |
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235 */ |
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236 public Control getTopRight() { |
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237 //checkWidget(); |
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238 return topRight; |
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239 } |
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240 void onDispose() { |
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241 topLeft = null; |
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242 topCenter = null; |
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243 topRight = null; |
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244 content = null; |
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245 oldSize = null; |
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246 selectionBackground = null; |
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247 } |
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248 void onPaint(GC gc) { |
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249 Color gcForeground = gc.getForeground(); |
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250 Point size = getSize(); |
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251 Color border = getDisplay().getSystemColor(BORDER1_COLOR); |
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252 if (showBorder) { |
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253 gc.setForeground(border); |
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254 gc.drawRectangle(0, 0, size.x - 1, size.y - 1); |
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255 if (highlight > 0) { |
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256 int x1 = 1; |
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257 int y1 = 1; |
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258 int x2 = size.x - 1; |
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259 int y2 = size.y - 1; |
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260 int[] shape = new int[] {x1,y1, x2,y1, x2,y2, x1,y2, x1,y1+highlight, |
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261 x1+highlight,y1+highlight, x1+highlight,y2-highlight, |
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262 x2-highlight,y2-highlight, x2-highlight,y1+highlight, x1,y1+highlight}; |
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263 Color highlightColor = getDisplay().getSystemColor(DWT.COLOR_LIST_SELECTION); |
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264 gc.setBackground(highlightColor); |
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265 gc.fillPolygon(shape); |
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266 } |
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267 } |
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268 if (separator > -1) { |
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269 gc.setForeground(border); |
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270 gc.drawLine(borderLeft + highlight, separator, size.x - borderLeft - borderRight - highlight, separator); |
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271 } |
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272 gc.setForeground(gcForeground); |
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273 } |
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274 void onResize() { |
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275 Point size = getSize(); |
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276 if (oldSize is null || oldSize.x is 0 || oldSize.y is 0) { |
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277 redraw(); |
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278 } else { |
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279 int width = 0; |
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280 if (oldSize.x < size.x) { |
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281 width = size.x - oldSize.x + borderRight + highlight; |
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282 } else if (oldSize.x > size.x) { |
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283 width = borderRight + highlight; |
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284 } |
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285 redraw(size.x - width, 0, width, size.y, false); |
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286 |
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287 int height = 0; |
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288 if (oldSize.y < size.y) { |
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289 height = size.y - oldSize.y + borderBottom + highlight; |
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290 } |
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291 if (oldSize.y > size.y) { |
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292 height = borderBottom + highlight; |
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293 } |
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294 redraw(0, size.y - height, size.x, height, false); |
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295 } |
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296 oldSize = size; |
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297 } |
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298 /** |
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299 * Sets the content. |
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300 * Setting the content to null will remove it from |
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301 * the pane - however, the creator of the content must dispose of the content. |
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302 * |
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303 * @param content the control to be displayed in the content area or null |
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304 * |
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305 * @exception DWTException <ul> |
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306 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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307 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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308 * <li>ERROR_INVALID_ARGUMENT - if the control is not a child of this ViewForm</li> |
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309 * </ul> |
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310 */ |
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311 public void setContent(Control content) { |
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312 checkWidget(); |
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313 if (content !is null && content.getParent() !is this) { |
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314 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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315 } |
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316 if (this.content !is null && !this.content.isDisposed()) { |
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317 this.content.setBounds(OFFSCREEN, OFFSCREEN, 0, 0); |
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318 } |
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319 this.content = content; |
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320 layout(false); |
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321 } |
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322 /** |
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323 * Sets the layout which is associated with the receiver to be |
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324 * the argument which may be null. |
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325 * <p> |
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326 * Note: No Layout can be set on this Control because it already |
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327 * manages the size and position of its children. |
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328 * </p> |
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329 * |
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330 * @param layout the receiver's new layout or null |
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331 * |
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332 * @exception DWTException <ul> |
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333 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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334 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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335 * </ul> |
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336 */ |
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337 public void setLayout (Layout layout) { |
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338 checkWidget(); |
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339 return; |
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340 } |
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341 void setSelectionBackground (Color color) { |
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342 checkWidget(); |
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343 if (selectionBackground is color) return; |
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344 if (color is null) color = getDisplay().getSystemColor(SELECTION_BACKGROUND); |
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345 selectionBackground = color; |
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346 redraw(); |
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347 } |
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348 /** |
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349 * Set the control that appears in the top center of the pane. |
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350 * Typically this is a toolbar. |
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351 * The topCenter is optional. Setting the topCenter to null will remove it from |
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352 * the pane - however, the creator of the topCenter must dispose of the topCenter. |
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353 * |
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354 * @param topCenter the control to be displayed in the top center or null |
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355 * |
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356 * @exception DWTException <ul> |
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357 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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358 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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359 * <li>ERROR_INVALID_ARGUMENT - if the control is not a child of this ViewForm</li> |
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360 * </ul> |
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361 */ |
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362 public void setTopCenter(Control topCenter) { |
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363 checkWidget(); |
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364 if (topCenter !is null && topCenter.getParent() !is this) { |
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365 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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366 } |
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367 if (this.topCenter !is null && !this.topCenter.isDisposed()) { |
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368 Point size = this.topCenter.getSize(); |
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369 this.topCenter.setLocation(OFFSCREEN - size.x, OFFSCREEN - size.y); |
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370 } |
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371 this.topCenter = topCenter; |
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372 layout(false); |
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373 } |
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374 /** |
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375 * Set the control that appears in the top left corner of the pane. |
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376 * Typically this is a label such as CLabel. |
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377 * The topLeft is optional. Setting the top left control to null will remove it from |
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378 * the pane - however, the creator of the control must dispose of the control. |
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379 * |
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380 * @param c the control to be displayed in the top left corner or null |
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381 * |
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382 * @exception DWTException <ul> |
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383 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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384 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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385 * <li>ERROR_INVALID_ARGUMENT - if the control is not a child of this ViewForm</li> |
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386 * </ul> |
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387 */ |
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388 public void setTopLeft(Control c) { |
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389 checkWidget(); |
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390 if (c !is null && c.getParent() !is this) { |
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391 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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392 } |
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393 if (this.topLeft !is null && !this.topLeft.isDisposed()) { |
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394 Point size = this.topLeft.getSize(); |
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395 this.topLeft.setLocation(OFFSCREEN - size.x, OFFSCREEN - size.y); |
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396 } |
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397 this.topLeft = c; |
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398 layout(false); |
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399 } |
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400 /** |
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401 * Set the control that appears in the top right corner of the pane. |
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402 * Typically this is a Close button or a composite with a Menu and Close button. |
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403 * The topRight is optional. Setting the top right control to null will remove it from |
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404 * the pane - however, the creator of the control must dispose of the control. |
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405 * |
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406 * @param c the control to be displayed in the top right corner or null |
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407 * |
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408 * @exception DWTException <ul> |
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409 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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410 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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411 * <li>ERROR_INVALID_ARGUMENT - if the control is not a child of this ViewForm</li> |
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412 * </ul> |
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413 */ |
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414 public void setTopRight(Control c) { |
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415 checkWidget(); |
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416 if (c !is null && c.getParent() !is this) { |
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417 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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418 } |
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419 if (this.topRight !is null && !this.topRight.isDisposed()) { |
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420 Point size = this.topRight.getSize(); |
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421 this.topRight.setLocation(OFFSCREEN - size.x, OFFSCREEN - size.y); |
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422 } |
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423 this.topRight = c; |
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424 layout(false); |
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425 } |
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426 /** |
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427 * Specify whether the border should be displayed or not. |
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428 * |
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429 * @param show true if the border should be displayed |
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430 * |
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431 * @exception DWTException <ul> |
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432 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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433 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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434 * </ul> |
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435 */ |
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436 public void setBorderVisible(bool show) { |
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437 checkWidget(); |
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438 if (showBorder is show) return; |
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439 |
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440 showBorder = show; |
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441 if (showBorder) { |
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442 borderLeft = borderTop = borderRight = borderBottom = 1; |
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443 if ((getStyle() & DWT.FLAT)== 0) highlight = 2; |
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444 } else { |
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445 borderBottom = borderTop = borderLeft = borderRight = 0; |
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446 highlight = 0; |
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447 } |
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448 layout(false); |
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449 redraw(); |
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450 } |
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451 /** |
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452 * If true, the topCenter will always appear on a separate line by itself, otherwise the |
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453 * topCenter will appear in the top row if there is room and will be moved to the second row if |
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454 * required. |
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455 * |
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456 * @param show true if the topCenter will always appear on a separate line by itself |
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457 * |
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458 * @exception DWTException <ul> |
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459 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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460 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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461 * </ul> |
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462 */ |
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463 public void setTopCenterSeparate(bool show) { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
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464 checkWidget(); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
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changeset
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465 separateTopCenter = show; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
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changeset
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466 layout(false); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
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467 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
468 } |