Mercurial > projects > dwt-mac
annotate dwt/custom/ScrolledComposite.d @ 146:05e03d23ca3a
Fixes #27
author | Jacob Carlborg <doob@me.com> |
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date | Sat, 06 Jun 2009 23:35:37 +0200 |
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rev | line source |
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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 * Port to the D programming language: |
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11 * Frank Benoit <benoit@tionex.de> |
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12 *******************************************************************************/ |
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13 module dwt.custom.ScrolledComposite; |
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14 |
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15 import dwt.dwthelper.utils; |
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16 |
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17 |
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18 import dwt.DWT; |
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19 import dwt.DWTException; |
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20 import dwt.events.DisposeEvent; |
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21 import dwt.events.DisposeListener; |
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22 import dwt.graphics.Point; |
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23 import dwt.graphics.Rectangle; |
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24 import dwt.widgets.Composite; |
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25 import dwt.widgets.Control; |
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26 import dwt.widgets.Display; |
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27 import dwt.widgets.Event; |
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28 import dwt.widgets.Layout; |
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29 import dwt.widgets.Listener; |
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30 import dwt.widgets.ScrollBar; |
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31 import dwt.widgets.Shell; |
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32 import dwt.custom.ScrolledCompositeLayout; |
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33 |
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34 /** |
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35 * A ScrolledComposite provides scrollbars and will scroll its content when the user |
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36 * uses the scrollbars. |
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37 * |
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38 * |
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39 * <p>There are two ways to use the ScrolledComposite: |
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40 * |
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41 * <p> |
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42 * 1) Set the size of the control that is being scrolled and the ScrolledComposite |
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43 * will show scrollbars when the contained control can not be fully seen. |
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44 * |
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45 * 2) The second way imitates the way a browser would work. Set the minimum size of |
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46 * the control and the ScrolledComposite will show scroll bars if the visible area is |
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47 * less than the minimum size of the control and it will expand the size of the control |
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48 * if the visible area is greater than the minimum size. This requires invoking |
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49 * both setMinWidth(), setMinHeight() and setExpandHorizontal(), setExpandVertical(). |
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50 * |
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51 * <code><pre> |
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52 * public static void main (String [] args) { |
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53 * Display display = new Display (); |
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54 * Color red = display.getSystemColor(DWT.COLOR_RED); |
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55 * Color blue = display.getSystemColor(DWT.COLOR_BLUE); |
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56 * Shell shell = new Shell (display); |
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57 * shell.setLayout(new FillLayout()); |
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58 * |
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59 * // set the size of the scrolled content - method 1 |
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60 * final ScrolledComposite sc1 = new ScrolledComposite(shell, DWT.H_SCROLL | DWT.V_SCROLL | DWT.BORDER); |
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61 * final Composite c1 = new Composite(sc1, DWT.NONE); |
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62 * sc1.setContent(c1); |
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63 * c1.setBackground(red); |
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64 * GridLayout layout = new GridLayout(); |
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65 * layout.numColumns = 4; |
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66 * c1.setLayout(layout); |
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67 * Button b1 = new Button (c1, DWT.PUSH); |
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68 * b1.setText("first button"); |
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69 * c1.setSize(c1.computeSize(DWT.DEFAULT, DWT.DEFAULT)); |
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70 * |
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71 * // set the minimum width and height of the scrolled content - method 2 |
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72 * final ScrolledComposite sc2 = new ScrolledComposite(shell, DWT.H_SCROLL | DWT.V_SCROLL | DWT.BORDER); |
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73 * sc2.setExpandHorizontal(true); |
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74 * sc2.setExpandVertical(true); |
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75 * final Composite c2 = new Composite(sc2, DWT.NONE); |
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76 * sc2.setContent(c2); |
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77 * c2.setBackground(blue); |
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78 * layout = new GridLayout(); |
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79 * layout.numColumns = 4; |
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80 * c2.setLayout(layout); |
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81 * Button b2 = new Button (c2, DWT.PUSH); |
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82 * b2.setText("first button"); |
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83 * sc2.setMinSize(c2.computeSize(DWT.DEFAULT, DWT.DEFAULT)); |
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84 * |
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85 * Button add = new Button (shell, DWT.PUSH); |
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86 * add.setText("add children"); |
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87 * final int[] index = new int[]{0}; |
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88 * add.addListener(DWT.Selection, new Listener() { |
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89 * public void handleEvent(Event e) { |
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90 * index[0]++; |
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91 * Button button = new Button(c1, DWT.PUSH); |
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92 * button.setText("button "+index[0]); |
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93 * // reset size of content so children can be seen - method 1 |
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94 * c1.setSize(c1.computeSize(DWT.DEFAULT, DWT.DEFAULT)); |
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95 * c1.layout(); |
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96 * |
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97 * button = new Button(c2, DWT.PUSH); |
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98 * button.setText("button "+index[0]); |
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99 * // reset the minimum width and height so children can be seen - method 2 |
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100 * sc2.setMinSize(c2.computeSize(DWT.DEFAULT, DWT.DEFAULT)); |
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101 * c2.layout(); |
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102 * } |
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103 * }); |
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104 * |
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105 * shell.open (); |
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106 * while (!shell.isDisposed ()) { |
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107 * if (!display.readAndDispatch ()) display.sleep (); |
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108 * } |
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109 * display.dispose (); |
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110 * } |
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111 * </pre></code> |
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112 * |
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113 * <dl> |
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114 * <dt><b>Styles:</b><dd>H_SCROLL, V_SCROLL |
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115 * </dl> |
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116 * |
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117 * @see <a href="http://www.eclipse.org/swt/snippets/#scrolledcomposite">ScrolledComposite snippets</a> |
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118 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
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119 */ |
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120 public class ScrolledComposite : Composite { |
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121 |
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122 Control content; |
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123 Listener contentListener; |
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124 Listener filter; |
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125 |
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126 int minHeight = 0; |
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127 int minWidth = 0; |
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128 bool expandHorizontal = false; |
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129 bool expandVertical = false; |
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130 bool alwaysShowScroll = false; |
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131 bool showFocusedControl = false; |
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132 |
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133 /** |
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134 * Constructs a new instance of this class given its parent |
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135 * and a style value describing its behavior and appearance. |
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136 * <p> |
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137 * The style value is either one of the style constants defined in |
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138 * class <code>DWT</code> which is applicable to instances of this |
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139 * class, or must be built by <em>bitwise OR</em>'ing together |
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140 * (that is, using the <code>int</code> "|" operator) two or more |
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141 * of those <code>DWT</code> style constants. The class description |
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142 * lists the style constants that are applicable to the class. |
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143 * Style bits are also inherited from superclasses. |
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144 * </p> |
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145 * |
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146 * @param parent a widget which will be the parent of the new instance (cannot be null) |
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147 * @param style the style of widget to construct |
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148 * |
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149 * @exception IllegalArgumentException <ul> |
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150 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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151 * </ul> |
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152 * @exception DWTException <ul> |
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153 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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154 * </ul> |
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155 * |
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156 * @see DWT#H_SCROLL |
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157 * @see DWT#V_SCROLL |
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158 * @see #getStyle() |
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159 */ |
5 | 160 public this(Composite parent, int style) { |
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161 super(parent, checkStyle(style)); |
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162 super.setLayout(new ScrolledCompositeLayout()); |
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163 ScrollBar hBar = getHorizontalBar (); |
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164 if (hBar !is null) { |
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165 hBar.setVisible(false); |
146 | 166 hBar.addListener (DWT.Selection, new class(this) Listener { |
167 ScrolledComposite sc; | |
168 | |
169 this (ScrolledComposite sc) { | |
170 this.sc = sc; | |
171 } | |
172 | |
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173 public void handleEvent (Event e) { |
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174 hScroll(); |
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175 } |
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176 }); |
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177 } |
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178 |
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179 ScrollBar vBar = getVerticalBar (); |
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180 if (vBar !is null) { |
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181 vBar.setVisible(false); |
146 | 182 vBar.addListener (DWT.Selection, new class(this) Listener { |
183 ScrolledComposite sc; | |
184 | |
185 this (ScrolledComposite sc) { | |
186 this.sc = sc; | |
187 } | |
188 | |
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189 public void handleEvent (Event e) { |
146 | 190 sc.vScroll(); |
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191 } |
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192 }); |
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193 } |
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194 |
146 | 195 contentListener = new class(this) Listener { |
196 ScrolledComposite sc; | |
197 | |
198 this (ScrolledComposite sc) { | |
199 this.sc = sc; | |
200 } | |
201 | |
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202 public void handleEvent(Event e) { |
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203 if (e.type !is DWT.Resize) return; |
146 | 204 sc.layout(false); |
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205 } |
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206 }; |
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207 |
146 | 208 filter = new class(this) Listener { |
209 ScrolledComposite sc; | |
210 | |
211 this (ScrolledComposite sc) { | |
212 this.sc = sc; | |
213 } | |
214 | |
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215 public void handleEvent(Event event) { |
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216 if (auto control = cast(Control)event.widget ) { |
146 | 217 if (contains(control)) sc.showControl(control); |
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218 } |
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219 } |
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220 }; |
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221 |
146 | 222 addDisposeListener(new class(this) DisposeListener { |
223 ScrolledComposite sc; | |
224 | |
225 this (ScrolledComposite sc) { | |
226 this.sc = sc; | |
227 } | |
228 | |
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229 public void widgetDisposed(DisposeEvent e) { |
146 | 230 sc.getDisplay().removeFilter(DWT.FocusIn, filter); |
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231 } |
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232 }); |
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233 } |
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234 |
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235 static int checkStyle (int style) { |
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236 int mask = DWT.H_SCROLL | DWT.V_SCROLL | DWT.BORDER | DWT.LEFT_TO_RIGHT | DWT.RIGHT_TO_LEFT; |
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237 return style & mask; |
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238 } |
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239 |
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240 bool contains(Control control) { |
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241 if (control is null || control.isDisposed()) return false; |
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242 |
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243 Composite parent = control.getParent(); |
8 | 244 while (parent !is null && !( null !is cast(Shell)parent )) { |
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245 if (this is parent) return true; |
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246 parent = parent.getParent(); |
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247 } |
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248 return false; |
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249 } |
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250 |
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251 /** |
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252 * Returns the Always Show Scrollbars flag. True if the scrollbars are |
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253 * always shown even if they are not required. False if the scrollbars are only |
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254 * visible when some part of the composite needs to be scrolled to be seen. |
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255 * The H_SCROLL and V_SCROLL style bits are also required to enable scrollbars in the |
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256 * horizontal and vertical directions. |
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257 * |
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258 * @return the Always Show Scrollbars flag value |
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259 */ |
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260 public bool getAlwaysShowScrollBars() { |
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261 //checkWidget(); |
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262 return alwaysShowScroll; |
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263 } |
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264 |
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265 /** |
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266 * Returns <code>true</code> if the content control |
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267 * will be expanded to fill available horizontal space. |
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268 * |
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269 * @return the receiver's horizontal expansion state |
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270 * |
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271 * @exception DWTException <ul> |
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272 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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273 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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274 * </ul> |
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275 * |
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276 * @since 3.2 |
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277 */ |
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278 public bool getExpandHorizontal() { |
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279 checkWidget(); |
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280 return expandHorizontal; |
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281 } |
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282 |
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283 /** |
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284 * Returns <code>true</code> if the content control |
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285 * will be expanded to fill available vertical space. |
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286 * |
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287 * @return the receiver's vertical expansion state |
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288 * |
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289 * @exception DWTException <ul> |
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290 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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291 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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292 * </ul> |
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293 * |
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294 * @since 3.2 |
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295 */ |
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296 public bool getExpandVertical() { |
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297 checkWidget(); |
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298 return expandVertical; |
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299 } |
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300 |
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301 /** |
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302 * Returns the minimum width of the content control. |
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303 * |
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304 * @return the minimum width |
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305 * |
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306 * @exception DWTException <ul> |
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307 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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308 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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309 * </ul> |
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310 * |
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311 * @since 3.2 |
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312 */ |
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313 public int getMinWidth() { |
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314 checkWidget(); |
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315 return minWidth; |
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316 } |
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317 |
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318 /** |
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319 * Returns the minimum height of the content control. |
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320 * |
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321 * @return the minimum height |
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322 * |
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323 * @exception DWTException <ul> |
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324 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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325 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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326 * </ul> |
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327 * |
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328 * @since 3.2 |
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329 */ |
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330 public int getMinHeight() { |
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331 checkWidget(); |
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332 return minHeight; |
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333 } |
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334 |
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335 /** |
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336 * Get the content that is being scrolled. |
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337 * |
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338 * @return the control displayed in the content area |
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339 */ |
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340 public Control getContent() { |
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341 //checkWidget(); |
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342 return content; |
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343 } |
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344 |
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345 /** |
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346 * Returns <code>true</code> if the receiver automatically scrolls to a focused child control |
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347 * to make it visible. Otherwise, returns <code>false</code>. |
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348 * |
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349 * @return a bool indicating whether focused child controls are automatically scrolled into the viewport |
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350 * |
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351 * @exception DWTException <ul> |
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352 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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353 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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354 * </ul> |
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355 * |
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356 * @since 3.4 |
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357 */ |
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358 public bool getShowFocusedControl() { |
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359 checkWidget(); |
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360 return showFocusedControl; |
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361 } |
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362 |
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363 void hScroll() { |
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364 if (content is null) return; |
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365 Point location = content.getLocation (); |
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366 ScrollBar hBar = getHorizontalBar (); |
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367 int hSelection = hBar.getSelection (); |
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368 content.setLocation (-hSelection, location.y); |
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369 } |
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370 bool needHScroll(Rectangle contentRect, bool vVisible) { |
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371 ScrollBar hBar = getHorizontalBar(); |
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372 if (hBar is null) return false; |
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373 |
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374 Rectangle hostRect = getBounds(); |
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375 int border = getBorderWidth(); |
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376 hostRect.width -= 2*border; |
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377 ScrollBar vBar = getVerticalBar(); |
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378 if (vVisible && vBar !is null) hostRect.width -= vBar.getSize().x; |
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379 |
0
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380 if (!expandHorizontal && contentRect.width > hostRect.width) return true; |
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381 if (expandHorizontal && minWidth > hostRect.width) return true; |
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382 return false; |
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383 } |
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384 |
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385 bool needVScroll(Rectangle contentRect, bool hVisible) { |
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386 ScrollBar vBar = getVerticalBar(); |
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387 if (vBar is null) return false; |
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388 |
0
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389 Rectangle hostRect = getBounds(); |
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390 int border = getBorderWidth(); |
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391 hostRect.height -= 2*border; |
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392 ScrollBar hBar = getHorizontalBar(); |
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393 if (hVisible && hBar !is null) hostRect.height -= hBar.getSize().y; |
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394 |
0
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395 if (!expandVertical && contentRect.height > hostRect.height) return true; |
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396 if (expandVertical && minHeight > hostRect.height) return true; |
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397 return false; |
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398 } |
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399 |
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400 /** |
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401 * Return the point in the content that currently appears in the top left |
0
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402 * corner of the scrolled composite. |
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403 * |
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404 * @return the point in the content that currently appears in the top left |
0
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405 * corner of the scrolled composite. If no content has been set, this returns |
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406 * (0, 0). |
41
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407 * |
0
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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> |
41
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412 * |
0
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413 * @since 2.0 |
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414 */ |
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415 public Point getOrigin() { |
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416 checkWidget(); |
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417 if (content is null) return new Point(0, 0); |
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418 Point location = content.getLocation(); |
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419 return new Point(-location.x, -location.y); |
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420 } |
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421 /** |
41
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422 * Scrolls the content so that the specified point in the content is in the top |
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423 * left corner. If no content has been set, nothing will occur. |
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424 * |
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425 * Negative values will be ignored. Values greater than the maximum scroll |
0
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426 * distance will result in scrolling to the end of the scrollbar. |
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427 * |
41
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428 * @param origin the point on the content to appear in the top left corner |
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429 * |
0
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430 * @exception DWTException <ul> |
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431 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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432 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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433 * <li>ERROR_INVALID_ARGUMENT - value of origin is outside of content |
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434 * </ul> |
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435 * @since 2.0 |
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436 */ |
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437 public void setOrigin(Point origin) { |
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438 setOrigin(origin.x, origin.y); |
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439 } |
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440 /** |
41
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441 * Scrolls the content so that the specified point in the content is in the top |
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442 * left corner. If no content has been set, nothing will occur. |
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443 * |
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444 * Negative values will be ignored. Values greater than the maximum scroll |
0
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445 * distance will result in scrolling to the end of the scrollbar. |
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446 * |
41
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447 * @param x the x coordinate of the content to appear in the top left corner |
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448 * |
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449 * @param y the y coordinate of the content to appear in the top left corner |
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450 * |
0
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451 * @exception DWTException <ul> |
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452 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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453 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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454 * </ul> |
41
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455 * |
0
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456 * @since 2.0 |
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457 */ |
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458 public void setOrigin(int x, int y) { |
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459 checkWidget(); |
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460 if (content is null) return; |
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461 ScrollBar hBar = getHorizontalBar (); |
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462 if (hBar !is null) { |
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463 hBar.setSelection(x); |
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464 x = -hBar.getSelection (); |
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465 } else { |
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466 x = 0; |
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467 } |
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468 ScrollBar vBar = getVerticalBar (); |
380af2bdd8e5
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469 if (vBar !is null) { |
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470 vBar.setSelection(y); |
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471 y = -vBar.getSelection (); |
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472 } else { |
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473 y = 0; |
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474 } |
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475 content.setLocation(x, y); |
380af2bdd8e5
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476 } |
380af2bdd8e5
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477 /** |
41
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478 * Set the Always Show Scrollbars flag. True if the scrollbars are |
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479 * always shown even if they are not required. False if the scrollbars are only |
0
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480 * visible when some part of the composite needs to be scrolled to be seen. |
41
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481 * The H_SCROLL and V_SCROLL style bits are also required to enable scrollbars in the |
0
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482 * horizontal and vertical directions. |
41
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483 * |
0
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484 * @param show true to show the scrollbars even when not required, false to show scrollbars only when required |
41
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485 * |
0
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|
486 * @exception DWTException <ul> |
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487 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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|
488 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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489 * </ul> |
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490 */ |
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|
491 public void setAlwaysShowScrollBars(bool show) { |
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492 checkWidget(); |
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493 if (show is alwaysShowScroll) return; |
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494 alwaysShowScroll = show; |
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495 ScrollBar hBar = getHorizontalBar (); |
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496 if (hBar !is null && alwaysShowScroll) hBar.setVisible(true); |
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497 ScrollBar vBar = getVerticalBar (); |
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498 if (vBar !is null && alwaysShowScroll) vBar.setVisible(true); |
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499 layout(false); |
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500 } |
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501 |
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502 /** |
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503 * Set the content that will be scrolled. |
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504 * |
0
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505 * @param content the control to be displayed in the content area |
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506 * |
0
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507 * @exception DWTException <ul> |
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508 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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509 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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510 * </ul> |
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511 */ |
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512 public void setContent(Control content) { |
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513 checkWidget(); |
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514 if (this.content !is null && !this.content.isDisposed()) { |
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515 this.content.removeListener(DWT.Resize, contentListener); |
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516 this.content.setBounds(new Rectangle(-200, -200, 0, 0)); |
0
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517 } |
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518 |
0
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519 this.content = content; |
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520 ScrollBar vBar = getVerticalBar (); |
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521 ScrollBar hBar = getHorizontalBar (); |
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522 if (this.content !is null) { |
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523 if (vBar !is null) { |
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524 vBar.setMaximum (0); |
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525 vBar.setThumb (0); |
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526 vBar.setSelection(0); |
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527 } |
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528 if (hBar !is null) { |
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529 hBar.setMaximum (0); |
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530 hBar.setThumb (0); |
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531 hBar.setSelection(0); |
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532 } |
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533 content.setLocation(0, 0); |
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534 layout(false); |
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535 this.content.addListener(DWT.Resize, contentListener); |
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536 } else { |
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537 if (hBar !is null) hBar.setVisible(alwaysShowScroll); |
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538 if (vBar !is null) vBar.setVisible(alwaysShowScroll); |
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539 } |
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|
540 } |
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|
541 /** |
41
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542 * Configure the ScrolledComposite to resize the content object to be as wide as the |
0
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543 * ScrolledComposite when the width of the ScrolledComposite is greater than the |
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544 * minimum width specified in setMinWidth. If the ScrolledComposite is less than the |
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545 * minimum width, the content will not be resized and instead the horizontal scroll bar will be |
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546 * used to view the entire width. |
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547 * If expand is false, this behaviour is turned off. By default, this behaviour is turned off. |
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diff
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548 * |
0
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549 * @param expand true to expand the content control to fill available horizontal space |
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550 * |
0
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|
551 * @exception DWTException <ul> |
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|
552 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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553 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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|
554 * </ul> |
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|
555 */ |
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|
556 public void setExpandHorizontal(bool expand) { |
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557 checkWidget(); |
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558 if (expand is expandHorizontal) return; |
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559 expandHorizontal = expand; |
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|
560 layout(false); |
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|
561 } |
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|
562 /** |
41
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diff
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563 * Configure the ScrolledComposite to resize the content object to be as tall as the |
0
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|
564 * ScrolledComposite when the height of the ScrolledComposite is greater than the |
380af2bdd8e5
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|
565 * minimum height specified in setMinHeight. If the ScrolledComposite is less than the |
380af2bdd8e5
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|
566 * minimum height, the content will not be resized and instead the vertical scroll bar will be |
380af2bdd8e5
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
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changeset
|
567 * used to view the entire height. |
380af2bdd8e5
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parents:
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|
568 * If expand is false, this behaviour is turned off. By default, this behaviour is turned off. |
41
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|
569 * |
0
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|
570 * @param expand true to expand the content control to fill available vertical space |
41
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|
571 * |
0
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|
572 * @exception DWTException <ul> |
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|
573 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
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changeset
|
574 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
380af2bdd8e5
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
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changeset
|
575 * </ul> |
380af2bdd8e5
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parents:
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|
576 */ |
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parents:
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changeset
|
577 public void setExpandVertical(bool expand) { |
380af2bdd8e5
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
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|
578 checkWidget(); |
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|
579 if (expand is expandVertical) return; |
380af2bdd8e5
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|
580 expandVertical = expand; |
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|
581 layout(false); |
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|
582 } |
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parents:
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changeset
|
583 /** |
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parents:
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changeset
|
584 * Sets the layout which is associated with the receiver to be |
380af2bdd8e5
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
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changeset
|
585 * the argument which may be null. |
380af2bdd8e5
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changeset
|
586 * <p> |
380af2bdd8e5
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
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changeset
|
587 * Note: No Layout can be set on this Control because it already |
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parents:
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changeset
|
588 * manages the size and position of its children. |
380af2bdd8e5
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parents:
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|
589 * </p> |
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|
590 * |
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
591 * @param layout the receiver's new layout or null |
380af2bdd8e5
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parents:
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|
592 * |
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
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changeset
|
593 * @exception DWTException <ul> |
380af2bdd8e5
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parents:
diff
changeset
|
594 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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parents:
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changeset
|
595 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
380af2bdd8e5
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changeset
|
596 * </ul> |
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diff
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|
597 */ |
41
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diff
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|
598 public override void setLayout (Layout layout) { |
0
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changeset
|
599 checkWidget(); |
380af2bdd8e5
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|
600 return; |
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parents:
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|
601 } |
380af2bdd8e5
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parents:
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changeset
|
602 /** |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
603 * Specify the minimum height at which the ScrolledComposite will begin scrolling the |
41
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parents:
8
diff
changeset
|
604 * content with the vertical scroll bar. This value is only relevant if |
0
380af2bdd8e5
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
605 * setExpandVertical(true) has been set. |
41
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diff
changeset
|
606 * |
0
380af2bdd8e5
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
607 * @param height the minimum height or 0 for default height |
41
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608 * |
0
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609 * @exception DWTException <ul> |
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610 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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611 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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612 * </ul> |
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613 */ |
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614 public void setMinHeight(int height) { |
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615 setMinSize(minWidth, height); |
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616 } |
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
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617 /** |
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618 * Specify the minimum width and height at which the ScrolledComposite will begin scrolling the |
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619 * content with the horizontal scroll bar. This value is only relevant if |
0
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620 * setExpandHorizontal(true) and setExpandVertical(true) have been set. |
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621 * |
0
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622 * @param size the minimum size or null for the default size |
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623 * |
0
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624 * @exception DWTException <ul> |
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625 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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626 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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627 * </ul> |
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628 */ |
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629 public void setMinSize(Point size) { |
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630 if (size is null) { |
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631 setMinSize(0, 0); |
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632 } else { |
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633 setMinSize(size.x, size.y); |
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634 } |
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635 } |
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636 /** |
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637 * Specify the minimum width and height at which the ScrolledComposite will begin scrolling the |
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638 * content with the horizontal scroll bar. This value is only relevant if |
0
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639 * setExpandHorizontal(true) and setExpandVertical(true) have been set. |
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640 * |
0
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|
641 * @param width the minimum width or 0 for default width |
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642 * @param height the minimum height or 0 for default height |
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643 * |
0
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644 * @exception DWTException <ul> |
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645 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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changeset
|
646 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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|
647 * </ul> |
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|
648 */ |
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649 public void setMinSize(int width, int height) { |
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650 checkWidget(); |
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651 if (width is minWidth && height is minHeight) return; |
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652 minWidth = Math.max(0, width); |
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653 minHeight = Math.max(0, height); |
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654 layout(false); |
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655 } |
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|
656 /** |
380af2bdd8e5
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|
657 * Specify the minimum width at which the ScrolledComposite will begin scrolling the |
41
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658 * content with the horizontal scroll bar. This value is only relevant if |
0
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|
659 * setExpandHorizontal(true) has been set. |
41
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660 * |
0
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661 * @param width the minimum width or 0 for default width |
41
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662 * |
0
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|
663 * @exception DWTException <ul> |
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664 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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665 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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666 * </ul> |
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|
667 */ |
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|
668 public void setMinWidth(int width) { |
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669 setMinSize(width, minHeight); |
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|
670 } |
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|
671 |
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|
672 /** |
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|
673 * Configure the receiver to automatically scroll to a focused child control |
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|
674 * to make it visible. |
41
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675 * |
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676 * If show is <code>false</code>, show a focused control is off. |
0
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677 * By default, show a focused control is off. |
41
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678 * |
0
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|
679 * @param show <code>true</code> to show a focused control. |
41
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680 * |
0
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|
681 * @exception DWTException <ul> |
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|
682 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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683 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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|
684 * </ul> |
41
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685 * |
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686 * @since 3.4 |
0
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|
687 */ |
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|
688 public void setShowFocusedControl(bool show) { |
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689 checkWidget(); |
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|
690 if (showFocusedControl is show) return; |
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691 Display display = getDisplay(); |
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692 display.removeFilter(DWT.FocusIn, filter); |
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693 showFocusedControl = show; |
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|
694 if (!showFocusedControl) return; |
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695 display.addFilter(DWT.FocusIn, filter); |
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696 Control control = display.getFocusControl(); |
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697 if (contains(control)) showControl(control); |
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|
698 } |
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|
699 |
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|
700 /** |
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|
701 * Scrolls the content of the receiver so that the control is visible. |
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|
702 * |
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|
703 * @param control the control to be shown |
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|
704 * |
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parents:
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|
705 * @exception IllegalArgumentException <ul> |
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|
706 * <li>ERROR_NULL_ARGUMENT - if the control is null</li> |
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|
707 * <li>ERROR_INVALID_ARGUMENT - if the control has been disposed</li> |
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|
708 * </ul> |
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|
709 * @exception DWTException <ul> |
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changeset
|
710 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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parents:
diff
changeset
|
711 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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|
712 * </ul> |
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|
713 * |
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parents:
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changeset
|
714 * @since 3.4 |
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changeset
|
715 */ |
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parents:
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changeset
|
716 public void showControl(Control control) { |
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|
717 checkWidget (); |
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parents:
diff
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|
718 if (control is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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parents:
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changeset
|
719 if (control.isDisposed ()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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parents:
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|
720 if (!contains(control)) DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
41
6337764516f1
Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents:
8
diff
changeset
|
721 |
0
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
722 Rectangle itemRect = getDisplay().map(control.getParent(), this, control.getBounds()); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
723 Rectangle area = getClientArea(); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
724 Point origin = getOrigin(); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
725 if (itemRect.x < 0) origin.x = Math.max(0, origin.x + itemRect.x); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
726 if (itemRect.y < 0) origin.y = Math.max(0, origin.y + itemRect.y); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
727 if (area.width < itemRect.x + itemRect.width) origin.x = Math.max(0, origin.x + itemRect.x + itemRect.width - area.width); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
728 if (area.height < itemRect.y + itemRect.height) origin.y = Math.max(0, origin.y + itemRect.y + itemRect.height - area.height); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
729 setOrigin(origin); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
730 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
731 |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
732 void vScroll() { |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
733 if (content is null) return; |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
734 Point location = content.getLocation (); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
735 ScrollBar vBar = getVerticalBar (); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
736 int vSelection = vBar.getSelection (); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
737 content.setLocation (location.x, -vSelection); |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
738 } |
380af2bdd8e5
Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff
changeset
|
739 } |