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Viewing changes to src/org/herac/tuxguitar/gui/editors/tab/TablatureUtil.java

  • Committer: Bazaar Package Importer
  • Author(s): Philippe Coval
  • Date: 2008-06-19 00:30:30 UTC
  • mto: (5.1.2 sid)
  • mto: This revision was merged to the branch mainline in revision 3.
  • Revision ID: james.westby@ubuntu.com-20080619003030-h719szrhsngou7c6
Tags: upstream-1.0
Import upstream version 1.0

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src/org/herac/tuxguitar/gui/editors/tab/TablatureUtil.java
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/*
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 * Created on 25-nov-2005
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 *
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 * TODO To change the template for this generated file go to
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 * Window - Preferences - Java - Code Style - Code Templates
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 */
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package org.herac.tuxguitar.gui.editors.tab;
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import java.util.ArrayList;
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import java.util.List;
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import org.herac.tuxguitar.song.models.Duration;
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import org.herac.tuxguitar.song.models.Measure;
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import org.herac.tuxguitar.song.models.TimeSignature;
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/**
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 * @author julian
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 *
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 * TODO To change the template for this generated type comment go to
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 * Window - Preferences - Java - Code Style - Code Templates
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 */
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public class TablatureUtil {
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    /**
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     * Calcula la posicion inicial de una nota, dependiendo de el span
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     */
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    public static final int getStartPosition(Measure measure,long start,int span){
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        double newStart = (double)start - (double)measure.getStart();
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        double displayPosition = 0.0;
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        if(newStart > 0){
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            double position = ((double)newStart / (double)Duration.QUARTER_TIME);               
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            displayPosition = (position * span);
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        }
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        return (int)displayPosition;
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    }
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    public static List createDurations(long time){
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        List durations = new ArrayList();
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        Duration tempDuration = new Duration(Duration.WHOLE);
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        tempDuration.setDotted(true);
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        long tempTime = time;
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        boolean finish = false;
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        while(!finish){
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            long currentDurationTime = tempDuration.getTime();
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            if(currentDurationTime <= tempTime){
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                durations.add((Duration)tempDuration.clone());
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                tempTime -= currentDurationTime;
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            }else{
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                if(tempDuration.isDotted()){                
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                    tempDuration.setDotted(false);
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                }else{
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                    tempDuration.setValue(tempDuration.getValue() * 2);
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                    tempDuration.setDotted(true);
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                }
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            }
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            if(tempDuration.getValue() > Duration.SIXTY_FOURTH){
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                finish = true;
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            }
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        }
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        return durations;        
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    }    
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    public static long getBeatLength(TimeSignature timeSignature){        
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        long defaultLenght = Duration.QUARTER_TIME;
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        int denominator = timeSignature.getDenominator().getValue();
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        switch(denominator){
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                case Duration.EIGHTH:
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                    if(timeSignature.getNumerator() % 3 == 0){
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                        defaultLenght += Duration.QUARTER_TIME / 2;
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                    }
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                    break;
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        }        
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        return defaultLenght;
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    }
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}