Mercurial > projects > dwt-mac
view dwt/custom/AnimatedProgress.d @ 128:07399639c0c8
Added DWT extension to dwt.widgets.MessageBox
author | Jacob Carlborg <doob@me.com> |
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date | Sat, 17 Jan 2009 16:26:49 +0100 |
parents | 6337764516f1 |
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/******************************************************************************* * Copyright (c) 2000, 2008 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 * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module dwt.custom.AnimatedProgress; import dwt.dwthelper.utils; 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; /** * 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> * * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> */ public class AnimatedProgress : Canvas { alias Canvas.computeSize computeSize; 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 override 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; } }