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comparison org.eclipse.swt.gtk.linux.x86/src/org/eclipse/swt/custom/AnimatedProgress.d @ 25:f713da8bc051

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Added SWT Linux GTK
author Frank Benoit <benoit@tionex.de>
date Fri, 20 Mar 2009 23:03:58 +0100
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24:b7a1d02a0e1f 25:f713da8bc051
1 /*******************************************************************************
2 * Copyright (c) 2000, 2008 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 * Port to the D programming language:
11 * Frank Benoit <benoit@tionex.de>
12 *******************************************************************************/
13 module org.eclipse.swt.custom.AnimatedProgress;
14
15 import java.lang.all;
16
17
18 import org.eclipse.swt.SWT;
19 import org.eclipse.swt.SWTException;
20 import org.eclipse.swt.events.ControlAdapter;
21 import org.eclipse.swt.events.ControlEvent;
22 import org.eclipse.swt.events.DisposeEvent;
23 import org.eclipse.swt.events.DisposeListener;
24 import org.eclipse.swt.events.PaintEvent;
25 import org.eclipse.swt.events.PaintListener;
26 import org.eclipse.swt.graphics.Color;
27 import org.eclipse.swt.graphics.GC;
28 import org.eclipse.swt.graphics.Point;
29 import org.eclipse.swt.graphics.Rectangle;
30 import org.eclipse.swt.widgets.Canvas;
31 import org.eclipse.swt.widgets.Composite;
32 import org.eclipse.swt.widgets.Display;
33
34 /**
35 * A control for showing progress feedback for a long running operation.
36 *
37 * @deprecated As of Eclipse 2.1, use ProgressBar with the style SWT.INDETERMINATE
38 *
39 * <dl>
40 * <dt><b>Styles:</b><dd>VERTICAL, HORIZONTAL, BORDER
41 * </dl>
42 *
43 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
44 */
45 public class AnimatedProgress : Canvas {
46
47 alias Canvas.computeSize computeSize;
48
49 static const int SLEEP = 70;
50 static const int DEFAULT_WIDTH = 160;
51 static const int DEFAULT_HEIGHT = 18;
52 bool active = false;
53 bool showStripes = false;
54 int value;
55 int orientation = SWT.HORIZONTAL;
56 bool showBorder = false;
57
58 /**
59 * Constructs a new instance of this class given its parent
60 * and a style value describing its behavior and appearance.
61 * <p>
62 * The style value is either one of the style constants defined in
63 * class <code>SWT</code> which is applicable to instances of this
64 * class, or must be built by <em>bitwise OR</em>'ing together
65 * (that is, using the <code>int</code> "|" operator) two or more
66 * of those <code>SWT</code> style constants. The class description
67 * lists the style constants that are applicable to the class.
68 * Style bits are also inherited from superclasses.
69 * </p>
70 *
71 * @param parent a widget which will be the parent of the new instance (cannot be null)
72 * @param style the style of widget to construct
73 *
74 * @exception IllegalArgumentException <ul>
75 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
76 * </ul>
77 * @exception SWTException <ul>
78 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
79 * </ul>
80 *
81 * @see SWT#VERTICAL
82 * @see SWT#HORIZONTAL
83 * @see SWT#BORDER
84 * @see #getStyle()
85 */
86 public this(Composite parent, int style) {
87 super(parent, checkStyle(style));
88
89 if ((style & SWT.VERTICAL) !is 0) {
90 orientation = SWT.VERTICAL;
91 }
92 showBorder = (style & SWT.BORDER) !is 0;
93
94 addControlListener(new class() ControlAdapter {
95 public void controlResized(ControlEvent e) {
96 redraw();
97 }
98 });
99 addPaintListener(new class() PaintListener {
100 public void paintControl(PaintEvent e) {
101 paint(e);
102 }
103 });
104 addDisposeListener(new class() DisposeListener {
105 public void widgetDisposed(DisposeEvent e){
106 stop();
107 }
108 });
109 }
110 private static int checkStyle (int style) {
111 int mask = SWT.NONE;
112 return style & mask;
113 }
114 /**
115 * Stop the animation if it is not already stopped and
116 * reset the presentation to a blank appearance.
117 *
118 * @exception SWTException <ul>
119 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
120 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
121 * </ul>
122 */
123 public synchronized void clear(){
124 checkWidget();
125 if (active) stop();
126 showStripes = false;
127 redraw();
128 }
129 public override Point computeSize(int wHint, int hHint, bool changed) {
130 checkWidget();
131 Point size = null;
132 if (orientation is SWT.HORIZONTAL) {
133 size = new Point(DEFAULT_WIDTH, DEFAULT_HEIGHT);
134 } else {
135 size = new Point(DEFAULT_HEIGHT, DEFAULT_WIDTH);
136 }
137 if (wHint !is SWT.DEFAULT) size.x = wHint;
138 if (hHint !is SWT.DEFAULT) size.y = hHint;
139
140 return size;
141 }
142 private void drawBevelRect(GC gc, int x, int y, int w, int h, Color topleft, Color bottomright) {
143 gc.setForeground(topleft);
144 gc.drawLine(x, y, x+w-1, y);
145 gc.drawLine(x, y, x, y+h-1);
146
147 gc.setForeground(bottomright);
148 gc.drawLine(x+w, y, x+w, y+h);
149 gc.drawLine(x, y+h, x+w, y+h);
150 }
151 void paint(PaintEvent event) {
152 GC gc = event.gc;
153 Display disp= getDisplay();
154
155 Rectangle rect= getClientArea();
156 gc.fillRectangle(rect);
157 if (showBorder) {
158 drawBevelRect(gc, rect.x, rect.y, rect.width-1, rect.height-1,
159 disp.getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW),
160 disp.getSystemColor(SWT.COLOR_WIDGET_HIGHLIGHT_SHADOW));
161 }
162
163 paintStripes(gc);
164 }
165 void paintStripes(GC gc) {
166
167 if (!showStripes) return;
168
169 Rectangle rect= getClientArea();
170 // Subtracted border painted by paint.
171 rect = new Rectangle(rect.x+2, rect.y+2, rect.width-4, rect.height-4);
172
173 gc.setLineWidth(2);
174 gc.setClipping(rect);
175 Color color = getDisplay().getSystemColor(SWT.COLOR_LIST_SELECTION);
176 gc.setBackground(color);
177 gc.fillRectangle(rect);
178 gc.setForeground(this.getBackground());
179 int step = 12;
180 int foregroundValue = value is 0 ? step - 2 : value - 2;
181 if (orientation is SWT.HORIZONTAL) {
182 int y = rect.y - 1;
183 int w = rect.width;
184 int h = rect.height + 2;
185 for (int i= 0; i < w; i+= step) {
186 int x = i + foregroundValue;
187 gc.drawLine(x, y, x, h);
188 }
189 } else {
190 int x = rect.x - 1;
191 int w = rect.width + 2;
192 int h = rect.height;
193
194 for (int i= 0; i < h; i+= step) {
195 int y = i + foregroundValue;
196 gc.drawLine(x, y, w, y);
197 }
198 }
199
200 if (active) {
201 value = (value + 2) % step;
202 }
203 }
204 /**
205 * Start the animation.
206 *
207 * @exception SWTException <ul>
208 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
209 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
210 * </ul>
211 */
212 public synchronized void start() {
213 checkWidget();
214 if (active) return;
215
216 active = true;
217 showStripes = true;
218
219 Display display = getDisplay();
220 Runnable [] timer = new Runnable [1];
221
222 timer [0] = new class( display, timer ) Runnable {
223 Display disp;
224 Runnable [] runs;
225 this( Display disp, Runnable[] runs ){
226 this.disp = disp;
227 this.runs = runs;
228 }
229 public void run () {
230 if (!active) return;
231 GC gc = new GC(this.outer);
232 paintStripes(gc);
233 gc.dispose();
234 disp.timerExec (SLEEP, runs [0]);
235 }
236 };
237 display.timerExec (SLEEP, timer [0]);
238 }
239 /**
240 * Stop the animation. Freeze the presentation at its current appearance.
241 */
242 public synchronized void stop() {
243 //checkWidget();
244 active = false;
245 }
246 }