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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 63a09873578e
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.Scale;
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15
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16 import dwt.dwthelper.utils;
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18
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19 import dwt.DWT;
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20 import dwt.DWTException;
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21 import dwt.events.SelectionListener;
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22 import dwt.graphics.Point;
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23 import dwt.internal.cocoa.NSControl;
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24 import dwt.internal.cocoa.NSRect;
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25 import dwt.internal.cocoa.NSSize;
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26 import dwt.internal.cocoa.NSSlider;
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27 import dwt.internal.cocoa.SWTSlider;
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29 import dwt.widgets.Composite;
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30 import dwt.widgets.Control;
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31 import dwt.widgets.TypedListener;
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32
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33 /**
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34 * Instances of the receiver represent a selectable user
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35 * interface object that present a range of continuous
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36 * numeric values.
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37 * <dl>
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38 * <dt><b>Styles:</b></dt>
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39 * <dd>HORIZONTAL, VERTICAL</dd>
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40 * <dt><b>Events:</b></dt>
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41 * <dd>Selection</dd>
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42 * </dl>
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43 * <p>
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44 * Note: Only one of the styles HORIZONTAL and VERTICAL may be specified.
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45 * </p><p>
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46 * <p>
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47 * IMPORTANT: This class is intended to be subclassed <em>only</em>
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48 * within the DWT implementation.
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49 * </p>
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50 *
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51 * @see <a href="http://www.eclipse.org/swt/snippets/#scale">Scale snippets</a>
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52 * @see <a href="http://www.eclipse.org/swt/examples.php">DWT Example: ControlExample</a>
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53 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
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54 */
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55 public class Scale : Control {
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56 int increment = 1;
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57 int pageIncrement = 10;
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58
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59 /**
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60 * Constructs a new instance of this class given its parent
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61 * and a style value describing its behavior and appearance.
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62 * <p>
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63 * The style value is either one of the style constants defined in
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64 * class <code>DWT</code> which is applicable to instances of this
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65 * class, or must be built by <em>bitwise OR</em>'ing together
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66 * (that is, using the <code>int</code> "|" operator) two or more
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67 * of those <code>DWT</code> style constants. The class description
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68 * lists the style constants that are applicable to the class.
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69 * Style bits are also inherited from superclasses.
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70 * </p>
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71 *
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72 * @param parent a composite control which will be the parent of the new instance (cannot be null)
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73 * @param style the style of control to construct
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74 *
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75 * @exception IllegalArgumentException <ul>
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76 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
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77 * </ul>
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78 * @exception DWTException <ul>
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79 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
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80 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
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81 * </ul>
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82 *
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83 * @see DWT#HORIZONTAL
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84 * @see DWT#VERTICAL
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85 * @see Widget#checkSubclass
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86 * @see Widget#getStyle
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87 */
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88 public this (Composite parent, int style) {
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89 super (parent, checkStyle (style));
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90 }
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91
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92 /**
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93 * Adds the listener to the collection of listeners who will
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94 * be notified when the user changes the receiver's value, by sending
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95 * it one of the messages defined in the <code>SelectionListener</code>
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96 * interface.
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97 * <p>
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98 * <code>widgetSelected</code> is called when the user changes the receiver's value.
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99 * <code>widgetDefaultSelected</code> is not called.
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100 * </p>
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101 *
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102 * @param listener the listener which should be notified
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103 *
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104 * @exception IllegalArgumentException <ul>
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105 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
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106 * </ul>
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107 * @exception DWTException <ul>
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108 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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109 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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110 * </ul>
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111 *
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112 * @see SelectionListener
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113 * @see #removeSelectionListener
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114 */
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115 public void addSelectionListener(SelectionListener listener) {
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116 checkWidget();
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117 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT);
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118 TypedListener typedListener = new TypedListener(listener);
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119 addListener(DWT.Selection,typedListener);
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120 addListener(DWT.DefaultSelection,typedListener);
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121 }
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122
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123 static int checkStyle (int style) {
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124 return checkBits (style, DWT.HORIZONTAL, DWT.VERTICAL, 0, 0, 0, 0);
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125 }
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126
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127 public Point computeSize (int wHint, int hHint, bool changed) {
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128 checkWidget();
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129 NSSlider widget = cast(NSSlider)view;
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130 NSSize size = widget.cell().cellSizeForBounds(widget.bounds());
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131 int width = DEFAULT_WIDTH, height = DEFAULT_HEIGHT;
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132 if ((style & DWT.HORIZONTAL) !is 0) {
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133 height = cast(int)Math.ceil(size.height);
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134 width = height * 10;
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135 } else {
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136 width = cast(int)Math.ceil(size.width);
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137 height = width * 10;
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138 }
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139 if (wHint !is DWT.DEFAULT) width = wHint;
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140 if (hHint !is DWT.DEFAULT) height = hHint;
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141 return new Point (width, height);
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142 }
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143
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144 void createHandle () {
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145 NSSlider widget = cast(NSSlider)(new SWTSlider()).alloc();
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146 NSRect rect = NSRect();
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147 rect.width = 1;
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148 rect.height = 1;
0
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149 widget.initWithFrame(rect);
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150 widget.setMaxValue(100);
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151 view = widget;
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152 }
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153
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154 void deregister() {
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155 super.deregister();
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156 display.removeWidget((cast(NSControl)view).cell());
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157 }
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158
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159
0
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160 /**
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161 * Returns the amount that the receiver's value will be
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162 * modified by when the up/down (or right/left) arrows
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163 * are pressed.
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164 *
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165 * @return the increment
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166 *
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167 * @exception DWTException <ul>
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168 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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169 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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170 * </ul>
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171 */
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172 public int getIncrement () {
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173 checkWidget();
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174 return increment;
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175 }
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176
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177 /**
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178 * Returns the maximum value which the receiver will allow.
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179 *
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180 * @return the maximum
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181 *
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182 * @exception DWTException <ul>
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183 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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184 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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185 * </ul>
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186 */
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187 public int getMaximum () {
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188 checkWidget();
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189 return cast(int)(cast(NSSlider)view).maxValue();
0
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190 }
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191
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192 /**
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193 * Returns the minimum value which the receiver will allow.
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194 *
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195 * @return the minimum
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196 *
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197 * @exception DWTException <ul>
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198 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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199 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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200 * </ul>
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201 */
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202 public int getMinimum () {
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203 checkWidget();
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204 return cast(int)(cast(NSSlider)view).minValue();
0
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205 }
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206
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207 /**
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208 * Returns the amount that the receiver's value will be
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209 * modified by when the page increment/decrement areas
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210 * are selected.
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211 *
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212 * @return the page increment
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213 *
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214 * @exception DWTException <ul>
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215 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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216 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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217 * </ul>
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218 */
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219 public int getPageIncrement () {
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220 checkWidget();
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221 return pageIncrement;
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222 }
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223
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224 /**
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225 * Returns the 'selection', which is the receiver's position.
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226 *
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227 * @return the selection
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228 *
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229 * @exception DWTException <ul>
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230 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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231 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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232 * </ul>
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233 */
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234 public int getSelection () {
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235 checkWidget();
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236 // int value = OS.GetControl32BitValue (handle);
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237 // if ((style & DWT.VERTICAL) !is 0) {
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238 // int minimum = OS.GetControl32BitMinimum (handle);
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239 // int maximum = OS.GetControl32BitMaximum (handle);
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240 // value = maximum - value + minimum;
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241 // }
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242 return cast(int)(cast(NSSlider)view).doubleValue();
0
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243 }
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244
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245 void register() {
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246 super.register();
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247 display.addWidget((cast(NSControl)view).cell(), this);
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248 }
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249
0
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250 /**
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251 * Removes the listener from the collection of listeners who will
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252 * be notified when the user changes the receiver's value.
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253 *
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254 * @param listener the listener which should no longer be notified
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255 *
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256 * @exception IllegalArgumentException <ul>
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257 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
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258 * </ul>
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259 * @exception DWTException <ul>
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260 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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261 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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262 * </ul>
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263 *
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264 * @see SelectionListener
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265 * @see #addSelectionListener
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266 */
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267 public void removeSelectionListener(SelectionListener listener) {
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268 checkWidget();
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269 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT);
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270 if (eventTable is null) return;
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271 eventTable.unhook(DWT.Selection, listener);
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272 eventTable.unhook(DWT.DefaultSelection,listener);
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273 }
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274
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275 /**
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276 * Sets the amount that the receiver's value will be
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277 * modified by when the up/down (or right/left) arrows
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278 * are pressed to the argument, which must be at least
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279 * one.
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280 *
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281 * @param increment the new increment (must be greater than zero)
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282 *
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283 * @exception DWTException <ul>
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284 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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285 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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286 * </ul>
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287 */
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288 public void setIncrement (int value) {
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289 checkWidget();
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290 if (value < 1) return;
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291 increment = value;
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292 }
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293
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294 /**
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295 * Sets the maximum value that the receiver will allow. This new
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296 * value will be ignored if it is not greater than the receiver's current
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297 * minimum value. If the new maximum is applied then the receiver's
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298 * selection value will be adjusted if necessary to fall within its new range.
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299 *
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300 * @param value the new maximum, which must be greater than the current minimum
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301 *
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302 * @exception DWTException <ul>
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303 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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304 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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305 * </ul>
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306 */
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307 public void setMaximum (int value) {
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308 checkWidget();
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309 int minimum = cast(int)(cast(NSSlider)view).minValue();
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310 if (value <= minimum) return;
0
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311 }
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312
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313 /**
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314 * Sets the minimum value that the receiver will allow. This new
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315 * value will be ignored if it is negative or is not less than the receiver's
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316 * current maximum value. If the new minimum is applied then the receiver's
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317 * selection value will be adjusted if necessary to fall within its new range.
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318 *
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319 * @param value the new minimum, which must be nonnegative and less than the current maximum
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320 *
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321 * @exception DWTException <ul>
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322 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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323 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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324 * </ul>
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325 */
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326 public void setMinimum (int value) {
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327 checkWidget();
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328 int maximum = cast(int)(cast(NSSlider)view).maxValue();
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329 if (!(0 <= value && value < maximum)) return;
0
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330 }
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331
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332 /**
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333 * Sets the amount that the receiver's value will be
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334 * modified by when the page increment/decrement areas
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335 * are selected to the argument, which must be at least
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336 * one.
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337 *
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338 * @param pageIncrement the page increment (must be greater than zero)
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339 *
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340 * @exception DWTException <ul>
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341 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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342 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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343 * </ul>
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344 */
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345 public void setPageIncrement (int value) {
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346 checkWidget();
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347 if (value < 1) return;
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348 pageIncrement = value;
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349 }
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350
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351 /**
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352 * Sets the 'selection', which is the receiver's value,
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353 * to the argument which must be greater than or equal to zero.
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354 *
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355 * @param value the new selection (must be zero or greater)
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356 *
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357 * @exception DWTException <ul>
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358 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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359 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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360 * </ul>
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361 */
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362 public void setSelection (int value) {
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363 checkWidget();
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e831403a80a9 Add 'cast' to casts
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364 (cast(NSSlider)view).setDoubleValue(value);
0
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365 }
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366
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367 }