Mercurial > projects > dwt-mac
annotate dwt/widgets/Scrollable.d @ 37:642f460a0908
Fixed a lot of compile errors, a "hello world" app compiles now
author | Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> |
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date | Fri, 10 Oct 2008 12:29:48 +0200 |
parents | 060cdd4457aa |
children | d8635bb48c7c |
rev | line source |
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1 /******************************************************************************* |
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2 * Copyright (c) 2000, 2007 IBM Corporation and others. |
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3 * All rights reserved. This program and the accompanying materials |
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4 * are made available under the terms of the Eclipse Public License v1.0 |
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5 * which accompanies this distribution, and is available at |
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6 * http://www.eclipse.org/legal/epl-v10.html |
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7 * |
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8 * Contributors: |
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9 * IBM Corporation - initial API and implementation |
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10 * |
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11 * Port to the D programming language: |
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12 * Jacob Carlborg <jacob.carlborg@gmail.com> |
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13 *******************************************************************************/ |
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14 module dwt.widgets.Scrollable; |
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15 |
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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.Rectangle; |
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20 import dwt.internal.cocoa.NSRect; |
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21 import dwt.internal.cocoa.NSScrollView; |
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22 import dwt.internal.cocoa.NSScroller; |
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23 import dwt.internal.cocoa.NSSize; |
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24 import dwt.internal.cocoa.NSView; |
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25 import dwt.internal.cocoa.OS; |
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26 import dwt.internal.cocoa.SWTScrollView; |
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27 |
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28 import dwt.dwthelper.utils; |
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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.Display; |
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32 import dwt.widgets.ScrollBar; |
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33 import dwt.widgets.Widget; |
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34 |
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35 /** |
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36 * This class is the abstract superclass of all classes which |
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37 * represent controls that have standard scroll bars. |
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38 * <dl> |
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39 * <dt><b>Styles:</b></dt> |
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40 * <dd>H_SCROLL, V_SCROLL</dd> |
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41 * <dt><b>Events:</b> |
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42 * <dd>(none)</dd> |
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43 * </dl> |
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44 * <p> |
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45 * IMPORTANT: This class is intended to be subclassed <em>only</em> |
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46 * within the DWT implementation. |
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47 * </p> |
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48 */ |
3 | 49 public abstract class Scrollable : Control { |
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50 SWTScrollView scrollView; |
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51 ScrollBar horizontalBar, verticalBar; |
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52 |
5 | 53 this () { |
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54 /* Do nothing */ |
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55 } |
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56 |
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57 /** |
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58 * Constructs a new instance of this class given its parent |
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59 * and a style value describing its behavior and appearance. |
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60 * <p> |
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61 * The style value is either one of the style constants defined in |
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62 * class <code>DWT</code> which is applicable to instances of this |
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63 * class, or must be built by <em>bitwise OR</em>'ing together |
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64 * (that is, using the <code>int</code> "|" operator) two or more |
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65 * of those <code>DWT</code> style constants. The class description |
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66 * lists the style constants that are applicable to the class. |
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67 * Style bits are also inherited from superclasses. |
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68 * </p> |
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69 * |
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70 * @param parent a composite control which will be the parent of the new instance (cannot be null) |
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71 * @param style the style of control to construct |
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72 * |
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73 * @exception IllegalArgumentException <ul> |
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74 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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75 * </ul> |
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76 * @exception DWTException <ul> |
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77 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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78 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
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79 * </ul> |
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80 * |
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81 * @see DWT#H_SCROLL |
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82 * @see DWT#V_SCROLL |
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83 * @see Widget#checkSubclass |
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84 * @see Widget#getStyle |
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85 */ |
5 | 86 public this (Composite parent, int style) { |
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87 super (parent, style); |
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88 } |
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89 |
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90 /** |
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91 * Given a desired <em>client area</em> for the receiver |
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92 * (as described by the arguments), returns the bounding |
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93 * rectangle which would be required to produce that client |
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94 * area. |
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95 * <p> |
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96 * In other words, it returns a rectangle such that, if the |
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97 * receiver's bounds were set to that rectangle, the area |
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98 * of the receiver which is capable of displaying data |
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99 * (that is, not covered by the "trimmings") would be the |
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100 * rectangle described by the arguments (relative to the |
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101 * receiver's parent). |
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102 * </p> |
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103 * |
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104 * @param x the desired x coordinate of the client area |
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105 * @param y the desired y coordinate of the client area |
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106 * @param width the desired width of the client area |
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107 * @param height the desired height of the client area |
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108 * @return the required bounds to produce the given client area |
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109 * |
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110 * @exception DWTException <ul> |
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111 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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112 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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113 * </ul> |
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114 * |
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115 * @see #getClientArea |
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116 */ |
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117 public Rectangle computeTrim (int x, int y, int width, int height) { |
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118 checkWidget(); |
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119 if (scrollView !is null) { |
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120 NSSize size = NSSize(); |
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121 size.width = width; |
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122 size.height = height; |
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123 NSBorderType border = hasBorder() ? NSBezelBorder : NSNoBorder; |
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124 size = NSScrollView.frameSizeForContentSize(size, (style & DWT.H_SCROLL) !is 0, (style & DWT.V_SCROLL) !is 0, border); |
7 | 125 width = cast(int)size.width; |
126 height = cast(int)size.height; | |
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127 NSRect frame = scrollView.contentView().frame(); |
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128 x -= frame.x; |
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129 y -= frame.y; |
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130 } |
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131 return new Rectangle (x, y, width, height); |
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132 } |
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133 |
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134 ScrollBar createScrollBar (int style) { |
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135 if (scrollView is null) return null; |
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136 ScrollBar bar = new ScrollBar (); |
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137 bar.parent = this; |
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138 bar.style = style; |
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139 bar.display = display; |
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140 NSScroller scroller; |
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141 String actionSelector; |
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142 if ((style & DWT.H_SCROLL) !is 0) { |
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143 scroller = scrollView.horizontalScroller(); |
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144 actionSelector = OS.sel_sendHorizontalSelection; |
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145 } else { |
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146 scroller = scrollView.verticalScroller(); |
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147 actionSelector = OS.sel_sendVerticalSelection; |
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148 } |
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149 bar.view = scroller; |
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150 //bar.createJNIRef(); |
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151 scroller.setTag(bar.jniRef); |
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152 if ((state & CANVAS) is 0) { |
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153 bar.target = scroller.target(); |
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154 bar.actionSelector = scroller.action(); |
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155 } |
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156 scroller.setTarget(scrollView); |
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157 scroller.setAction(actionSelector); |
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158 return bar; |
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159 } |
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160 |
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161 void createWidget () { |
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162 super.createWidget (); |
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163 if ((style & DWT.H_SCROLL) !is 0) horizontalBar = createScrollBar (DWT.H_SCROLL); |
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164 if ((style & DWT.V_SCROLL) !is 0) verticalBar = createScrollBar (DWT.V_SCROLL); |
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165 } |
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166 |
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167 /** |
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168 * Returns a rectangle which describes the area of the |
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169 * receiver which is capable of displaying data (that is, |
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170 * not covered by the "trimmings"). |
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171 * |
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172 * @return the client area |
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173 * |
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174 * @exception DWTException <ul> |
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175 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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176 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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177 * </ul> |
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178 * |
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179 * @see #computeTrim |
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180 */ |
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181 public Rectangle getClientArea () { |
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182 checkWidget(); |
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183 if (scrollView !is null) { |
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184 NSSize size = scrollView.contentSize(); |
7 | 185 return new Rectangle(0, 0, cast(int)size.width, cast(int)size.height); |
0
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186 } else { |
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187 NSRect rect = view.bounds(); |
7 | 188 return new Rectangle(0, 0, cast(int)rect.width, cast(int)rect.height); |
0
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189 } |
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190 } |
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191 |
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192 /** |
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193 * Returns the receiver's horizontal scroll bar if it has |
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194 * one, and null if it does not. |
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195 * |
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196 * @return the horizontal scroll bar (or null) |
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197 * |
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198 * @exception DWTException <ul> |
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199 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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200 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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201 * </ul> |
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202 */ |
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203 public ScrollBar getHorizontalBar () { |
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204 checkWidget(); |
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205 return horizontalBar; |
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206 } |
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207 |
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208 /** |
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209 * Returns the receiver's vertical scroll bar if it has |
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210 * one, and null if it does not. |
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211 * |
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212 * @return the vertical scroll bar (or null) |
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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 ScrollBar getVerticalBar () { |
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220 checkWidget(); |
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221 return verticalBar; |
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222 } |
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223 |
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224 bool hooksKeys () { |
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225 return hooks (DWT.KeyDown) || hooks (DWT.KeyUp) || hooks (DWT.Traverse); |
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226 } |
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227 |
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228 |
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229 void releaseHandle () { |
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230 super.releaseHandle (); |
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231 if (scrollView !is null) { |
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232 scrollView.setTag(-1); |
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233 scrollView.release(); |
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234 } |
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235 scrollView = null; |
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236 } |
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237 |
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238 void releaseChildren (bool destroy) { |
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239 if (horizontalBar !is null) { |
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240 horizontalBar.release (false); |
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241 horizontalBar = null; |
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242 } |
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243 if (verticalBar !is null) { |
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244 verticalBar.release (false); |
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245 verticalBar = null; |
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246 } |
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247 super.releaseChildren (destroy); |
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248 } |
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249 |
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250 void resizeClientArea () { |
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251 // if (scrolledHandle is 0) return; |
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252 // if ((state & CANVAS) is 0) return; |
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253 // int vWidth = 0, hHeight = 0; |
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254 // int [] outMetric = new int [1]; |
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255 // OS.GetThemeMetric (OS.kThemeMetricScrollBarWidth, outMetric); |
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256 // bool isVisibleHBar = horizontalBar !is null && horizontalBar.getVisible (); |
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257 // bool isVisibleVBar = verticalBar !is null && verticalBar.getVisible (); |
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258 // if (isVisibleHBar) hHeight = outMetric [0]; |
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259 // if (isVisibleVBar) vWidth = outMetric [0]; |
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260 // int width, height; |
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261 // CGRect rect = new CGRect (); |
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262 // OS.HIViewGetBounds (scrolledHandle, rect); |
7 | 263 // width = cast(int) rect.width; |
264 // height = cast(int) rect.height; | |
0
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265 // Rect inset = inset (); |
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266 // width = Math.max (0, width - vWidth - inset.left - inset.right); |
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267 // height = Math.max (0, height - hHeight - inset.top - inset.bottom); |
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268 // setBounds (handle, inset.left, inset.top, width, height, true, true, false); |
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269 // if (isVisibleHBar) { |
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270 // setBounds (horizontalBar.handle, inset.left, inset.top + height, width, hHeight, true, true, false); |
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271 // } |
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272 // if (isVisibleVBar) { |
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273 // setBounds (verticalBar.handle, inset.left + width, inset.top, vWidth, height, true, true, false); |
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274 // } |
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275 } |
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276 |
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277 void sendHorizontalSelection () { |
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278 horizontalBar.sendSelection (); |
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279 } |
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280 |
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281 bool sendMouseWheel (short wheelAxis, int wheelDelta) { |
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282 // if ((state & CANVAS) !is 0) { |
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283 // ScrollBar bar = wheelAxis is OS.kEventMouseWheelAxisX ? horizontalBar : verticalBar; |
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284 // if (bar !is null && bar.getEnabled ()) { |
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285 // bar.setSelection (Math.max (0, bar.getSelection () - bar.getIncrement () * wheelDelta)); |
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286 // Event event = new Event (); |
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287 // event.detail = wheelDelta > 0 ? DWT.PAGE_UP : DWT.PAGE_DOWN; |
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288 // bar.sendEvent (DWT.Selection, event); |
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289 // return true; |
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290 // } |
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291 // } |
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292 return false; |
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293 } |
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294 |
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295 void sendVerticalSelection () { |
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296 verticalBar.sendSelection (); |
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297 } |
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298 |
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299 bool setScrollBarVisible (ScrollBar bar, bool visible) { |
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300 if (scrollView is null) return false; |
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301 if ((state & CANVAS) is 0) return false; |
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302 if (visible) { |
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303 if ((bar.state & HIDDEN) is 0) return false; |
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304 bar.state &= ~HIDDEN; |
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305 } else { |
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306 if ((bar.state & HIDDEN) !is 0) return false; |
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307 bar.state |= HIDDEN; |
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308 } |
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309 resizeClientArea (); |
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310 // setVisible (bar.handle, visible); |
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311 bar.sendEvent (visible ? DWT.Show : DWT.Hide); |
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312 sendEvent (DWT.Resize); |
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313 return true; |
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314 } |
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315 |
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316 NSView topView () { |
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317 if (scrollView !is null) return scrollView; |
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318 return super.topView (); |
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319 } |
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320 } |