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Fixes to get dwt to work with dmd and ldc
author Jacob Carlborg <doob@me.com>
date Wed, 08 Jul 2009 21:56:44 +0200
parents c74ba20de292
children
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2008 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 *
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11 * Port to the D programming language:
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12 * Jacob Carlborg <doob@me.com>
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13 *******************************************************************************/
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14 module dwt.widgets.Canvas;
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16
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17 import dwt.DWT;
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18 import dwt.DWTException;
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19 import dwt.graphics.Font;
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20 import dwt.graphics.GC;
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21 import dwt.graphics.Image;
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22 import dwt.graphics.Rectangle;
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23 import dwt.internal.cocoa.NSBezierPath;
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24 import dwt.internal.cocoa.NSColor;
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25 import dwt.internal.cocoa.NSCursor;
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26 import dwt.internal.cocoa.NSEvent;
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27 import dwt.internal.cocoa.NSGraphicsContext;
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28 import dwt.internal.cocoa.NSPoint;
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29 import dwt.internal.cocoa.NSRange;
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30 import dwt.internal.cocoa.NSRect;
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31 import dwt.internal.cocoa.NSSize;
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32 import dwt.internal.cocoa.OS;
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34 import dwt.dwthelper.utils;
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35 import dwt.internal.objc.cocoa.Cocoa;
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36 import objc = dwt.internal.objc.runtime;
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37 import dwt.widgets.Caret;
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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.IME;
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41
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42 /**
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43 * Instances of this class provide a surface for drawing
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44 * arbitrary graphics.
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45 * <dl>
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46 * <dt><b>Styles:</b></dt>
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47 * <dd>(none)</dd>
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48 * <dt><b>Events:</b></dt>
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49 * <dd>(none)</dd>
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50 * </dl>
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51 * <p>
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52 * This class may be subclassed by custom control implementors
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53 * who are building controls that are <em>not</em> constructed
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54 * from aggregates of other controls. That is, they are either
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55 * painted using DWT graphics calls or are handled by native
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56 * methods.
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57 * </p>
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58 *
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59 * @see Composite
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60 * @see <a href="http://www.eclipse.org/swt/snippets/#canvas">Canvas snippets</a>
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61 * @see <a href="http://www.eclipse.org/swt/examples.php">DWT Example: ControlExample</a>
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62 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
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63 */
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64 public class Canvas : Composite {
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65 Caret caret;
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66 IME ime;
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67
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68 this () {
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69 /* Do nothing */
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70 }
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71
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72 objc.id attributedSubstringFromRange (objc.id id, objc.SEL sel, objc.id range) {
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73 if (ime !is null) return ime.attributedSubstringFromRange (id, sel, range);
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74 return super.attributedSubstringFromRange(id, sel, range);
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75 }
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77 bool becomeFirstResponder (objc.id id, objc.SEL sel) {
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78 if (caret !is null) caret.setFocus ();
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79 return super.becomeFirstResponder(id, sel);
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80 }
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81
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82 bool resignFirstResponder (objc.id id, objc.SEL sel) {
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83 if (caret !is null) caret.killFocus ();
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84 return super.resignFirstResponder(id, sel);
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85 }
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86
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87
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88 /**
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89 * Constructs a new instance of this class given its parent
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90 * and a style value describing its behavior and appearance.
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91 * <p>
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92 * The style value is either one of the style constants defined in
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93 * class <code>DWT</code> which is applicable to instances of this
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94 * class, or must be built by <em>bitwise OR</em>'ing together
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95 * (that is, using the <code>int</code> "|" operator) two or more
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96 * of those <code>DWT</code> style constants. The class description
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97 * lists the style constants that are applicable to the class.
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98 * Style bits are also inherited from superclasses.
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99 * </p>
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100 *
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101 * @param parent a composite control which will be the parent of the new instance (cannot be null)
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102 * @param style the style of control to construct
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103 *
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104 * @exception IllegalArgumentException <ul>
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105 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
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106 * </ul>
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107 * @exception DWTException <ul>
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108 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
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109 * </ul>
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110 *
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111 * @see DWT
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112 * @see Widget#checkSubclass
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113 * @see Widget#getStyle
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114 */
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115 public this (Composite parent, int style) {
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116 super (parent, style);
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117 }
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118
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119 NSInteger characterIndexForPoint (objc.id id, objc.SEL sel, objc.id point) {
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120 if (ime !is null) return ime.characterIndexForPoint (id, sel, point);
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121 return super.characterIndexForPoint (id, sel, point);
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122 }
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123
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124 /**
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125 * Fills the interior of the rectangle specified by the arguments,
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126 * with the receiver's background.
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127 *
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128 * @param gc the gc where the rectangle is to be filled
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129 * @param x the x coordinate of the rectangle to be filled
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130 * @param y the y coordinate of the rectangle to be filled
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131 * @param width the width of the rectangle to be filled
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132 * @param height the height of the rectangle to be filled
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133 *
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134 * @exception IllegalArgumentException <ul>
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135 * <li>ERROR_NULL_ARGUMENT - if the gc is null</li>
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136 * <li>ERROR_INVALID_ARGUMENT - if the gc has been disposed</li>
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137 * </ul>
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138 * @exception DWTException <ul>
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139 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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140 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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141 * </ul>
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142 *
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143 * @since 3.2
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144 */
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145 public void drawBackground (GC gc, int x, int y, int width, int height) {
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146 checkWidget ();
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147 if (gc is null) error (DWT.ERROR_NULL_ARGUMENT);
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148 if (gc.isDisposed ()) error (DWT.ERROR_INVALID_ARGUMENT);
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149 Control control = findBackgroundControl ();
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150 if (control !is null) {
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151 NSRect rect = NSRect();
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152 rect.x = x;
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153 rect.y = y;
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154 rect.width = width;
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155 rect.height = height;
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156 control.fillBackground (view, gc.handle, rect);
0
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157 } else {
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158 gc.fillRectangle (x, y, width, height);
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159 }
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160 }
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161
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162 void drawWidget (objc.id id, NSRect rect) {
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163 super.drawWidget (id, rect);
0
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164 if (caret is null) return;
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165 if (caret.isShowing) {
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166 NSGraphicsContext context = NSGraphicsContext.currentContext();
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167
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168 Image image = caret.image;
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169 if (image !is null) {
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170 NSRect fromRect = NSRect ();
0
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171 NSSize size = image.handle.size();
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172 fromRect.width = size.width;
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173 fromRect.height = size.height;
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174 NSPoint point = NSPoint();
0
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175 point.x = caret.x;
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176 point.y = caret.y;
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177 image.handle.drawAtPoint(point, rect, OS.NSCompositeXOR, 1);
0
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178 } else {
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179 context.saveGraphicsState();
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180 context.setCompositingOperation(OS.NSCompositeXOR);
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181 NSRect drawRect = NSRect();
0
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182 drawRect.x = caret.x;
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183 drawRect.y = caret.y;
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184 drawRect.width = caret.width !is 0 ? caret.width : Caret.DEFAULT_WIDTH;
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185 drawRect.height = caret.height;
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186 context.setShouldAntialias(false);
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187 NSColor color = NSColor.colorWithDeviceRed(1, 1, 1, 1);
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188 color.set();
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189 NSBezierPath.fillRect(drawRect);
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190 context.restoreGraphicsState();
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191 }
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192 }
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193 }
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194
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195 NSRect firstRectForCharacterRange (objc.id id, objc.SEL sel, objc.id range) {
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196 if (ime !is null) return ime.firstRectForCharacterRange (id, sel, range);
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197 return super.firstRectForCharacterRange (id, sel, range);
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198 }
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199
0
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200 /**
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201 * Returns the caret.
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202 * <p>
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203 * The caret for the control is automatically hidden
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204 * and shown when the control is painted or resized,
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205 * when focus is gained or lost and when an the control
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206 * is scrolled. To avoid drawing on top of the caret,
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207 * the programmer must hide and show the caret when
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208 * drawing in the window any other time.
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209 * </p>
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210 *
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211 * @return the caret for the receiver, may be null
0
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212 *
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213 * @exception DWTException <ul>
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214 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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215 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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216 * </ul>
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217 */
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218 public Caret getCaret () {
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219 checkWidget();
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220 return caret;
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221 }
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222
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223 /**
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224 * Returns the IME.
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225 *
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226 * @return the IME
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227 *
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228 * @exception DWTException <ul>
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229 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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230 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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231 * </ul>
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232 *
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233 * @since 3.4
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234 */
0
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235 public IME getIME () {
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236 checkWidget();
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237 return ime;
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238 }
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239
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240 bool hasMarkedText (objc.id id, objc.SEL sel) {
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241 if (ime !is null) return ime.hasMarkedText (id, sel);
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242 return super.hasMarkedText (id, sel);
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243 }
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244
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245 bool insertText (objc.id id, objc.SEL sel, objc.id string) {
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246 if (ime !is null) {
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247 if (!ime.insertText (id, sel, string)) return false;
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248 }
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249 return super.insertText (id, sel, string);
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250 }
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251
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252 NSRange markedRange (objc.id id, objc.SEL sel) {
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253 if (ime !is null) return ime.markedRange (id, sel);
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254 return super.markedRange (id, sel);
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255 }
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256
0
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257 //void redrawWidget (int control, bool children) {
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258 // bool isFocus = OS.VERSION < 0x1040 && caret !is null && caret.isFocusCaret ();
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259 // if (isFocus) caret.killFocus ();
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260 // super.redrawWidget (control, children);
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261 // if (isFocus) caret.setFocus ();
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262 //}
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263 //
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264 //void redrawWidget (int control, int x, int y, int width, int height, bool all) {
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265 // bool isFocus = OS.VERSION < 0x1040 && caret !is null && caret.isFocusCaret ();
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266 // if (isFocus) caret.killFocus ();
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267 // super.redrawWidget (control, x, y, width, height, all);
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268 // if (isFocus) caret.setFocus ();
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269 //}
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270
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271 void releaseChildren (bool destroy) {
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272 if (caret !is null) {
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273 caret.release (false);
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274 caret = null;
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275 }
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276 if (ime !is null) {
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277 ime.release (false);
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278 ime = null;
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279 }
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280 super.releaseChildren (destroy);
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281 }
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282
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283 /**
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284 * Scrolls a rectangular area of the receiver by first copying
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285 * the source area to the destination and then causing the area
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286 * of the source which is not covered by the destination to
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287 * be repainted. Children that intersect the rectangle are
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288 * optionally moved during the operation. In addition, outstanding
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289 * paint events are flushed before the source area is copied to
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290 * ensure that the contents of the canvas are drawn correctly.
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291 *
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292 * @param destX the x coordinate of the destination
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293 * @param destY the y coordinate of the destination
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294 * @param x the x coordinate of the source
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295 * @param y the y coordinate of the source
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296 * @param width the width of the area
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297 * @param height the height of the area
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298 * @param all <code>true</code>if children should be scrolled, and <code>false</code> otherwise
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299 *
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300 * @exception DWTException <ul>
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301 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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302 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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303 * </ul>
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304 */
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305 public void scroll (int destX, int destY, int x, int y, int width, int height, bool all) {
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306 checkWidget();
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307 if (width <= 0 || height <= 0) return;
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308 int deltaX = destX - x, deltaY = destY - y;
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309 if (deltaX is 0 && deltaY is 0) return;
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310 // if (!isDrawing (handle)) return;
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311 bool isFocus = caret !is null && caret.isFocusCaret ();
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312 if (isFocus) caret.killFocus ();
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313 Rectangle clientRect = getClientArea ();
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314 Rectangle sourceRect = new Rectangle (x, y, width, height);
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315 if (sourceRect.intersects (clientRect)) {
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316 update (all);
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317 }
23
9414ecde7ba7 Ported dwt.widgets.Canvas
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318 NSRect damage = NSRect();
0
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319 damage.x = x;
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320 damage.y = y;
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321 damage.width = width;
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322 damage.height = height;
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323 view.setNeedsDisplayInRect(damage);
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324 damage.x = destX;
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325 damage.y = destY;
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326 view.setNeedsDisplayInRect(damage);
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327 // Control control = findBackgroundControl ();
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328 // if ((control !is null && control.backgroundImage !is null)) {
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329 // redrawWidget (handle, x, y, width, height, false);
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330 // redrawWidget (handle, destX, destY, width, height, false);
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331 // } else {
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332 // GC gc = new GC (this);
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333 // gc.copyArea (x, y, width, height, destX, destY);
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334 // gc.dispose ();
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335 // }
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336 if (all) {
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337 Control [] children = _getChildren ();
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338 for (int i=0; i<children.length; i++) {
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339 Control child = children [i];
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340 Rectangle rect = child.getBounds ();
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341 if (Math.min(x + width, rect.x + rect.width) >= Math.max (x, rect.x) &&
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342 Math.min(y + height, rect.y + rect.height) >= Math.max (y, rect.y)) {
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343 child.setLocation (rect.x + deltaX, rect.y + deltaY);
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344 }
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345 }
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346 }
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347 if (isFocus) caret.setFocus ();
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348 }
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349
51
e6f04eb518ae Updated Canvas to 3.514
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350 NSRange selectedRange (objc.id id, objc.SEL sel) {
45
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351 if (ime !is null) return ime.selectedRange (id, sel);
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352 return super.selectedRange (id, sel);
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353 }
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354
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355 bool sendKeyEvent (NSEvent nsEvent, int type) {
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356 if (caret !is null) NSCursor.setHiddenUntilMouseMoves (true);
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357 return super.sendKeyEvent (nsEvent, type);
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358 }
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359
0
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360 /**
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361 * Sets the receiver's caret.
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362 * <p>
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363 * The caret for the control is automatically hidden
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364 * and shown when the control is painted or resized,
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365 * when focus is gained or lost and when an the control
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366 * is scrolled. To avoid drawing on top of the caret,
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367 * the programmer must hide and show the caret when
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368 * drawing in the window any other time.
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369 * </p>
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370 * @param caret the new caret for the receiver, may be null
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371 *
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372 * @exception IllegalArgumentException <ul>
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373 * <li>ERROR_INVALID_ARGUMENT - if the caret has been disposed</li>
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374 * </ul>
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375 * @exception DWTException <ul>
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376 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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377 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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378 * </ul>
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379 */
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380 public void setCaret (Caret caret) {
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381 checkWidget();
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382 Caret newCaret = caret;
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383 Caret oldCaret = this.caret;
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384 this.caret = newCaret;
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385 if (hasFocus ()) {
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386 if (oldCaret !is null) oldCaret.killFocus ();
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387 if (newCaret !is null) {
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388 if (newCaret.isDisposed()) error(DWT.ERROR_INVALID_ARGUMENT);
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389 newCaret.setFocus ();
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390 }
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391 }
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392 }
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393
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394 public void setFont (Font font) {
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395 checkWidget ();
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396 if (caret !is null) caret.setFont (font);
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397 super.setFont (font);
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398 }
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399
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400 /**
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401 * Sets the receiver's IME.
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402 *
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403 * @param ime the new IME for the receiver, may be null
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404 *
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405 * @exception IllegalArgumentException <ul>
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406 * <li>ERROR_INVALID_ARGUMENT - if the IME has been disposed</li>
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407 * </ul>
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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 * </ul>
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412 *
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413 * @since 3.4
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414 */
0
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415 public void setIME (IME ime) {
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416 checkWidget ();
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417 if (ime !is null && ime.isDisposed()) error(DWT.ERROR_INVALID_ARGUMENT);
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418 this.ime = ime;
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419 }
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420
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421 bool setMarkedText_selectedRange (objc.id id, objc.SEL sel, objc.id string, objc.id range) {
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422 if (ime !is null) {
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423 if (!ime.setMarkedText_selectedRange (id, sel, string, range)) return false;
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424 }
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425 return super.setMarkedText_selectedRange (id, sel, string, range);
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426 }
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427
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428 objc.id validAttributesForMarkedText (objc.id id, objc.SEL sel) {
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429 if (ime !is null) return ime.validAttributesForMarkedText (id, sel);
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430 return super.validAttributesForMarkedText(id, sel);
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431 }
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432
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433 }