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Diffstat (limited to 'canvas/source/java/SpriteRunner.java')
| -rw-r--r-- | canvas/source/java/SpriteRunner.java | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/canvas/source/java/SpriteRunner.java b/canvas/source/java/SpriteRunner.java new file mode 100644 index 000000000000..4a75125e377a --- /dev/null +++ b/canvas/source/java/SpriteRunner.java @@ -0,0 +1,203 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2008 by Sun Microsystems, Inc. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * $RCSfile: SpriteRunner.java,v $ + * $Revision: 1.7 $ + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// Canvas +import com.sun.star.rendering.*; + +// +// HOWTO get a Graphics2D from a window +// + +// import javax.swing.*; +// import java.awt.*; +// import java.awt.geom.*; + +// public class Stroke1 extends JFrame { +// Stroke drawingStroke = new BasicStroke(5); +// Rectangle2D rect = +// new Rectangle2D.Double(20, 40, 100, 40); + +// public void paint(Graphics g) { +// Graphics2D g2d = (Graphics2D)g; +// g2d.setStroke(drawingStroke); +// g2d.draw(rect); +// } + +// public static void main(String args[]) { +// JFrame frame = new Stroke1(); +// frame.setDefaultCloseOperation(EXIT_ON_CLOSE); +// frame.setSize(200, 100); +// frame.show(); +// } +// } + + +public class SpriteRunner + extends Thread +{ + private CanvasSprite sprite; + private XAnimation spriteAnimation; + private JavaCanvas canvas; + private double startTime; + private double currentSpeed; + private double currentT; + private boolean animationActive; + private boolean stayAlive; + + //---------------------------------------------------------------------------------- + + public SpriteRunner( CanvasSprite _sprite, XAnimation _animation, JavaCanvas _canvas ) + { + CanvasUtils.printLog( "SpriteRunner constructor called!" ); + + sprite = _sprite; + spriteAnimation = _animation; + canvas = _canvas; + startTime = 0.0; + currentSpeed = 0.0; + currentT = 0.0; + animationActive = false; + stayAlive = true; + + // Set priority to lower-than-normal, as this thread runs the + // animation in a busy loop. + setPriority( MIN_PRIORITY ); + } + + //---------------------------------------------------------------------------------- + + // + // Thread + // ====== + // + // Overriding + // + public void run() + { + // perform the animation rendering (as fast as possible, for now) + + while( stayAlive ) + { + while( animationActive ) + { + // to determine the current animation step to render, calc the + // elapsed time since this animation was started + double elapsedTime = getCurrentTime() - startTime; + + // the frame to render is determined by mapping the cycle + // duration (currentSpeed) to the [0,1] range of the animation. + currentT = (elapsedTime % currentSpeed) / currentSpeed; + + // delegate animation rendering to SpriteCanvas, as + // only this instance can enforce consistency (on-time + // saving of background etc.) + canvas.renderAnimation( sprite, spriteAnimation, currentT ); + + // TODO: Consolidate _all_ sprites per canvas into one + // thread, call updateScreen() only after all sprites + // have been processed. + + //Make changes visible + canvas.updateScreen( false ); + + // TODO: Evaluate vs. setPriority and other means +// try +// { +// // give other tasks some time to breathe (10ms - this is only meant symbolically) +// sleep(10); +// } catch( InterruptedException e ) { } + } + + // wait until animation is activated again + try + { + wait(); + } + catch( InterruptedException e ) { } + catch( IllegalMonitorStateException e ) { } + } + } + + public synchronized void startAnimation( double speed ) + { + resetAnimation(); + currentSpeed = speed; + + // start us, if not done already + if( !isAlive() ) + start(); + + // enable animation thread + animationActive = true; + + try + { + notify(); + } catch( IllegalMonitorStateException e ) { } + } + + public synchronized void stopAnimation() + { + // stop animation after the current frame has been completely + // rendered + animationActive = false; + } + + public synchronized void resetAnimation() + { + startTime = getCurrentTime(); + } + + public synchronized boolean isAnimationActive() + { + return animationActive; + } + + public synchronized void quit() + { + stayAlive = false; + stopAnimation(); + } + + public synchronized double getCurrentT() + { + return currentT; + } + + //---------------------------------------------------------------------------------- + + // helper + static double getCurrentTime() + { + // determine current time in seconds + java.util.Calendar cal = new java.util.GregorianCalendar(); + return cal.getTimeInMillis() / 1000.0; + } +} |