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annotate dwt/custom/AnimatedProgress.d @ 156:969e7de37c3d default tip

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Fixes to get dwt to work with dmd and ldc
author Jacob Carlborg <doob@me.com>
date Wed, 08 Jul 2009 21:56:44 +0200
parents 07399639c0c8
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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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f565d3a95c0a Ported dwt.internal
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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.AnimatedProgress;
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15 import dwt.dwthelper.utils;
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17 import dwt.DWT;
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18 import dwt.DWTException;
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19 import dwt.events.ControlAdapter;
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20 import dwt.events.ControlEvent;
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21 import dwt.events.DisposeEvent;
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22 import dwt.events.DisposeListener;
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23 import dwt.events.PaintEvent;
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24 import dwt.events.PaintListener;
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25 import dwt.graphics.Color;
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26 import dwt.graphics.GC;
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27 import dwt.graphics.Point;
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28 import dwt.graphics.Rectangle;
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29 import dwt.widgets.Canvas;
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30 import dwt.widgets.Composite;
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31 import dwt.widgets.Display;
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33 /**
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34 * A control for showing progress feedback for a long running operation.
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35 *
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36 * @deprecated As of Eclipse 2.1, use ProgressBar with the style DWT.INDETERMINATE
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37 *
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38 * <dl>
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39 * <dt><b>Styles:</b><dd>VERTICAL, HORIZONTAL, BORDER
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40 * </dl>
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41 *
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42 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
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43 */
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44 public class AnimatedProgress : Canvas {
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46 alias Canvas.computeSize computeSize;
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48 static const int SLEEP = 70;
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49 static const int DEFAULT_WIDTH = 160;
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50 static const int DEFAULT_HEIGHT = 18;
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51 bool active = false;
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52 bool showStripes = false;
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53 int value;
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54 int orientation = DWT.HORIZONTAL;
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55 bool showBorder = false;
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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 widget which will be the parent of the new instance (cannot be null)
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71 * @param style the style of widget 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 * </ul>
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79 *
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80 * @see DWT#VERTICAL
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81 * @see DWT#HORIZONTAL
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82 * @see DWT#BORDER
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83 * @see #getStyle()
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84 */
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85 public this(Composite parent, int style) {
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86 super(parent, checkStyle(style));
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87
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88 if ((style & DWT.VERTICAL) !is 0) {
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89 orientation = DWT.VERTICAL;
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90 }
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91 showBorder = (style & DWT.BORDER) !is 0;
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92
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93 addControlListener(new class() ControlAdapter {
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94 public void controlResized(ControlEvent e) {
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95 redraw();
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96 }
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97 });
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98 addPaintListener(new class() PaintListener {
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99 public void paintControl(PaintEvent e) {
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100 paint(e);
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101 }
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102 });
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103 addDisposeListener(new class() DisposeListener {
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104 public void widgetDisposed(DisposeEvent e){
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105 stop();
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106 }
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107 });
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108 }
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109 private static int checkStyle (int style) {
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110 int mask = DWT.NONE;
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111 return style & mask;
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112 }
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113 /**
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114 * Stop the animation if it is not already stopped and
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115 * reset the presentation to a blank appearance.
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116 *
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117 * @exception DWTException <ul>
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118 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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119 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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120 * </ul>
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121 */
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122 public synchronized void clear(){
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123 checkWidget();
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124 if (active) stop();
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125 showStripes = false;
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126 redraw();
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127 }
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128 public override Point computeSize(int wHint, int hHint, bool changed) {
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129 checkWidget();
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130 Point size = null;
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131 if (orientation is DWT.HORIZONTAL) {
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132 size = new Point(DEFAULT_WIDTH, DEFAULT_HEIGHT);
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133 } else {
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134 size = new Point(DEFAULT_HEIGHT, DEFAULT_WIDTH);
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135 }
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136 if (wHint !is DWT.DEFAULT) size.x = wHint;
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137 if (hHint !is DWT.DEFAULT) size.y = hHint;
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138
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139 return size;
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140 }
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141 private void drawBevelRect(GC gc, int x, int y, int w, int h, Color topleft, Color bottomright) {
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142 gc.setForeground(topleft);
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143 gc.drawLine(x, y, x+w-1, y);
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144 gc.drawLine(x, y, x, y+h-1);
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145
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146 gc.setForeground(bottomright);
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147 gc.drawLine(x+w, y, x+w, y+h);
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148 gc.drawLine(x, y+h, x+w, y+h);
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149 }
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150 void paint(PaintEvent event) {
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151 GC gc = event.gc;
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152 Display disp= getDisplay();
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153
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154 Rectangle rect= getClientArea();
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155 gc.fillRectangle(rect);
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156 if (showBorder) {
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157 drawBevelRect(gc, rect.x, rect.y, rect.width-1, rect.height-1,
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158 disp.getSystemColor(DWT.COLOR_WIDGET_NORMAL_SHADOW),
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159 disp.getSystemColor(DWT.COLOR_WIDGET_HIGHLIGHT_SHADOW));
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160 }
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161
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162 paintStripes(gc);
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163 }
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164 void paintStripes(GC gc) {
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165
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166 if (!showStripes) return;
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167
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168 Rectangle rect= getClientArea();
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169 // Subtracted border painted by paint.
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170 rect = new Rectangle(rect.x+2, rect.y+2, rect.width-4, rect.height-4);
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171
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172 gc.setLineWidth(2);
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173 gc.setClipping(rect);
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174 Color color = getDisplay().getSystemColor(DWT.COLOR_LIST_SELECTION);
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175 gc.setBackground(color);
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176 gc.fillRectangle(rect);
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177 gc.setForeground(this.getBackground());
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178 int step = 12;
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179 int foregroundValue = value is 0 ? step - 2 : value - 2;
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180 if (orientation is DWT.HORIZONTAL) {
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181 int y = rect.y - 1;
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182 int w = rect.width;
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183 int h = rect.height + 2;
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184 for (int i= 0; i < w; i+= step) {
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185 int x = i + foregroundValue;
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186 gc.drawLine(x, y, x, h);
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187 }
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188 } else {
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189 int x = rect.x - 1;
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190 int w = rect.width + 2;
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191 int h = rect.height;
0
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192
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193 for (int i= 0; i < h; i+= step) {
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194 int y = i + foregroundValue;
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195 gc.drawLine(x, y, w, y);
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196 }
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197 }
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198
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199 if (active) {
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200 value = (value + 2) % step;
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201 }
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202 }
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203 /**
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204 * Start the animation.
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205 *
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206 * @exception DWTException <ul>
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207 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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208 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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209 * </ul>
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210 */
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211 public synchronized void start() {
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212 checkWidget();
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213 if (active) return;
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214
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215 active = true;
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216 showStripes = true;
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217
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218 Display display = getDisplay();
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219 Runnable [] timer = new Runnable [1];
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220
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221 timer [0] = new class( display, timer ) Runnable {
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222 Display disp;
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223 Runnable [] runs;
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224 this( Display disp, Runnable[] runs ){
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225 this.disp = disp;
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226 this.runs = runs;
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227 }
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228 public void run () {
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229 if (!active) return;
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230 GC gc = new GC(this.outer);
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231 paintStripes(gc);
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232 gc.dispose();
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233 disp.timerExec (SLEEP, runs [0]);
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234 }
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235 };
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236 display.timerExec (SLEEP, timer [0]);
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237 }
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238 /**
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239 * Stop the animation. Freeze the presentation at its current appearance.
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240 */
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241 public synchronized void stop() {
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242 //checkWidget();
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243 active = false;
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244 }
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245 }