Mercurial > projects > dwt-linux
changeset 96:9ec02606e09d
AnimatedProgress
author | Frank Benoit <benoit@tionex.de> |
---|---|
date | Fri, 18 Jan 2008 02:22:26 +0100 |
parents | d9e5954ee27d |
children | 5eaabd099f15 |
files | dwt/custom/AnimatedProgress.d |
diffstat | 1 files changed, 239 insertions(+), 0 deletions(-) [+] |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/dwt/custom/AnimatedProgress.d Fri Jan 18 02:22:26 2008 +0100 @@ -0,0 +1,239 @@ +/******************************************************************************* + * Copyright (c) 2000, 2004 IBM Corporation and others. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * IBM Corporation - initial API and implementation + *******************************************************************************/ +module dwt.custom.AnimatedProgress; + + +import dwt.DWT; +import dwt.DWTException; +import dwt.events.ControlAdapter; +import dwt.events.ControlEvent; +import dwt.events.DisposeEvent; +import dwt.events.DisposeListener; +import dwt.events.PaintEvent; +import dwt.events.PaintListener; +import dwt.graphics.Color; +import dwt.graphics.GC; +import dwt.graphics.Point; +import dwt.graphics.Rectangle; +import dwt.widgets.Canvas; +import dwt.widgets.Composite; +import dwt.widgets.Display; +import dwt.dwthelper.Runnable; + +/** + * A control for showing progress feedback for a long running operation. + * + * @deprecated As of Eclipse 2.1, use ProgressBar with the style DWT.INDETERMINATE + * + * <dl> + * <dt><b>Styles:</b><dd>VERTICAL, HORIZONTAL, BORDER + * </dl> + */ +public class AnimatedProgress : Canvas { + + static const int SLEEP = 70; + static const int DEFAULT_WIDTH = 160; + static const int DEFAULT_HEIGHT = 18; + bool active = false; + bool showStripes = false; + int value; + int orientation = DWT.HORIZONTAL; + bool showBorder = false; + +/** + * Constructs a new instance of this class given its parent + * and a style value describing its behavior and appearance. + * <p> + * The style value is either one of the style constants defined in + * class <code>DWT</code> which is applicable to instances of this + * class, or must be built by <em>bitwise OR</em>'ing together + * (that is, using the <code>int</code> "|" operator) two or more + * of those <code>DWT</code> style constants. The class description + * lists the style constants that are applicable to the class. + * Style bits are also inherited from superclasses. + * </p> + * + * @param parent a widget which will be the parent of the new instance (cannot be null) + * @param style the style of widget to construct + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> + * </ul> + * @exception DWTException <ul> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> + * </ul> + * + * @see DWT#VERTICAL + * @see DWT#HORIZONTAL + * @see DWT#BORDER + * @see #getStyle() + */ +public this(Composite parent, int style) { + super(parent, checkStyle(style)); + + if ((style & DWT.VERTICAL) !is 0) { + orientation = DWT.VERTICAL; + } + showBorder = (style & DWT.BORDER) !is 0; + + addControlListener(new class() ControlAdapter { + public void controlResized(ControlEvent e) { + redraw(); + } + }); + addPaintListener(new class() PaintListener { + public void paintControl(PaintEvent e) { + paint(e); + } + }); + addDisposeListener(new class() DisposeListener { + public void widgetDisposed(DisposeEvent e){ + stop(); + } + }); +} +private static int checkStyle (int style) { + int mask = DWT.NONE; + return style & mask; +} +/** + * Stop the animation if it is not already stopped and + * reset the presentation to a blank appearance. + * + * @exception DWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + */ +public synchronized void clear(){ + checkWidget(); + if (active) stop(); + showStripes = false; + redraw(); +} +public Point computeSize(int wHint, int hHint, bool changed) { + checkWidget(); + Point size = null; + if (orientation is DWT.HORIZONTAL) { + size = new Point(DEFAULT_WIDTH, DEFAULT_HEIGHT); + } else { + size = new Point(DEFAULT_HEIGHT, DEFAULT_WIDTH); + } + if (wHint !is DWT.DEFAULT) size.x = wHint; + if (hHint !is DWT.DEFAULT) size.y = hHint; + + return size; +} +private void drawBevelRect(GC gc, int x, int y, int w, int h, Color topleft, Color bottomright) { + gc.setForeground(topleft); + gc.drawLine(x, y, x+w-1, y); + gc.drawLine(x, y, x, y+h-1); + + gc.setForeground(bottomright); + gc.drawLine(x+w, y, x+w, y+h); + gc.drawLine(x, y+h, x+w, y+h); +} +void paint(PaintEvent event) { + GC gc = event.gc; + Display disp= getDisplay(); + + Rectangle rect= getClientArea(); + gc.fillRectangle(rect); + if (showBorder) { + drawBevelRect(gc, rect.x, rect.y, rect.width-1, rect.height-1, + disp.getSystemColor(DWT.COLOR_WIDGET_NORMAL_SHADOW), + disp.getSystemColor(DWT.COLOR_WIDGET_HIGHLIGHT_SHADOW)); + } + + paintStripes(gc); +} +void paintStripes(GC gc) { + + if (!showStripes) return; + + Rectangle rect= getClientArea(); + // Subtracted border painted by paint. + rect = new Rectangle(rect.x+2, rect.y+2, rect.width-4, rect.height-4); + + gc.setLineWidth(2); + gc.setClipping(rect); + Color color = getDisplay().getSystemColor(DWT.COLOR_LIST_SELECTION); + gc.setBackground(color); + gc.fillRectangle(rect); + gc.setForeground(this.getBackground()); + int step = 12; + int foregroundValue = value is 0 ? step - 2 : value - 2; + if (orientation is DWT.HORIZONTAL) { + int y = rect.y - 1; + int w = rect.width; + int h = rect.height + 2; + for (int i= 0; i < w; i+= step) { + int x = i + foregroundValue; + gc.drawLine(x, y, x, h); + } + } else { + int x = rect.x - 1; + int w = rect.width + 2; + int h = rect.height; + + for (int i= 0; i < h; i+= step) { + int y = i + foregroundValue; + gc.drawLine(x, y, w, y); + } + } + + if (active) { + value = (value + 2) % step; + } +} +/** +* Start the animation. +* +* @exception DWTException <ul> +* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> +* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> +* </ul> +*/ +public synchronized void start() { + checkWidget(); + if (active) return; + + active = true; + showStripes = true; + + Display display = getDisplay(); + Runnable [] timer = new Runnable [1]; + + timer [0] = new class( display, timer ) Runnable { + Display disp; + Runnable [] runs; + this( Display disp, Runnable[] runs ){ + this.disp = disp; + this.runs = runs; + } + public void run () { + if (!active) return; + GC gc = new GC(this.outer); + paintStripes(gc); + gc.dispose(); + disp.timerExec (SLEEP, runs [0]); + } + }; + display.timerExec (SLEEP, timer [0]); +} +/** +* Stop the animation. Freeze the presentation at its current appearance. +*/ +public synchronized void stop() { + //checkWidget(); + active = false; +} +}