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Viewing changes to src/org/herac/tuxguitar/gui/actions/composition/ChangeTempoAction.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/actions/composition/ChangeTempoAction.java
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/*
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 * Created on 17-dic-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.actions.composition;
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import org.eclipse.swt.SWT;
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import org.eclipse.swt.events.SelectionAdapter;
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import org.eclipse.swt.events.SelectionEvent;
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import org.eclipse.swt.events.TypedEvent;
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import org.eclipse.swt.layout.GridData;
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import org.eclipse.swt.layout.GridLayout;
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import org.eclipse.swt.widgets.Button;
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import org.eclipse.swt.widgets.Combo;
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import org.eclipse.swt.widgets.Composite;
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import org.eclipse.swt.widgets.Label;
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import org.eclipse.swt.widgets.Shell;
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import org.eclipse.swt.widgets.Spinner;
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import org.herac.tuxguitar.gui.TuxGuitar;
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import org.herac.tuxguitar.gui.actions.Action;
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import org.herac.tuxguitar.gui.editors.TablatureEditor;
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import org.herac.tuxguitar.gui.editors.tab.Caret;
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import org.herac.tuxguitar.gui.editors.tab.MeasureCoords;
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import org.herac.tuxguitar.gui.editors.tab.SongCoords;
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import org.herac.tuxguitar.gui.undo.undoables.custom.UndoableChangeTempo;
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import org.herac.tuxguitar.gui.util.MessageDialog;
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import org.herac.tuxguitar.song.models.Tempo;
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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 ChangeTempoAction extends Action{
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    public static final String NAME = "action.composition.change-tempo";
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    private static final int MIN_TEMPO = 30;
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    private static final int MAX_TEMPO = 320;
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    private static final int[] DEFAULT_PERCENTS = new int[]{25,50,75,100,125,150,175,200};
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    public ChangeTempoAction(TablatureEditor tablatureEditor) {
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        super(NAME,true,tablatureEditor);       
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    }
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    public boolean doAction(TypedEvent e) {
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        showDialog(getEditor().getTablature().getShell());
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        return true;
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    }
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    public void showDialog(Shell shell) {
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        MeasureCoords measure = getEditor().getTablature().getCaret().getMeasureCoords();
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        if (measure != null) {
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            final Shell dialog = new Shell(shell, SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL);
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            dialog.setLayout(new GridLayout());
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            dialog.setText(TuxGuitar.getProperty("composition.tempo"));
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            //-----------------TEMPO------------------------
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            Composite composite = new Composite(dialog, SWT.NONE);
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            composite.setLayout(new GridLayout(2,false));
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            composite.setLayoutData(new GridData(SWT.FILL,SWT.FILL,true,true)); 
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            Tempo currentTempo = measure.getMeasure().getTempo();
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            Label tempoLabel = new Label(composite, SWT.NULL);
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            tempoLabel.setText(TuxGuitar.getProperty("composition.tempo"));
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            final Spinner tempo = new Spinner(composite, SWT.BORDER);
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            tempo.setLayoutData(getSpinnerData());            
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            tempo.setMinimum(MIN_TEMPO);
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            tempo.setMaximum(MAX_TEMPO);
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            tempo.setSelection(currentTempo.getValue());                                    
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            Label percentLabel = new Label(composite, SWT.NULL);
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            percentLabel.setText(TuxGuitar.getProperty("composition.tempo-percent"));
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            final Combo percent = new Combo(composite, SWT.DROP_DOWN | SWT.READ_ONLY);
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            percent.setLayoutData(new GridData(SWT.FILL,SWT.FILL,true,true));
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            for(int i = 0; i < DEFAULT_PERCENTS.length; i ++){
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                percent.add(Integer.toString(DEFAULT_PERCENTS[i]) + "%",i);
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                if(currentTempo.getPercent() == DEFAULT_PERCENTS[i]){
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                        percent.select(i);
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                }
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            }            
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            //------------------BUTTONS--------------------------            
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            Composite buttons = new Composite(dialog, SWT.NONE);
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            buttons.setLayout(new GridLayout(2,false));
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            buttons.setLayoutData(new GridData(SWT.END,SWT.FILL,true,true));            
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            GridData data = new GridData(SWT.FILL,SWT.FILL,true,true);    
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            data.minimumWidth = 80;
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            data.minimumHeight = 25;     
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            final Button buttonOK = new Button(buttons, SWT.PUSH);
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            buttonOK.setText(TuxGuitar.getProperty("ok"));
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            buttonOK.setLayoutData(data);
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            buttonOK.addSelectionListener(new SelectionAdapter() {
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                public void widgetSelected(SelectionEvent arg0) {   
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                    boolean valid = false;
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                    int tempoValue = tempo.getSelection();
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                    if(tempoValue >= MIN_TEMPO && MAX_TEMPO <= 320){
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                        Tempo tempo = new Tempo(tempoValue,DEFAULT_PERCENTS[ (percent.getSelectionIndex() >= 0)?percent.getSelectionIndex():3 ]);                                       
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                        setTempo(tempo);
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                        valid = true;
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                    }
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                    if(!valid){
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                        showErrorMessage(TuxGuitar.getProperty("composition.tempo.invalid"));
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                    }
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                    dialog.dispose();
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                }
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            });
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            Button buttonCancel = new Button(buttons, SWT.PUSH);
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            buttonCancel.setText(TuxGuitar.getProperty("cancel"));
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            buttonCancel.setLayoutData(data);
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            buttonCancel.addSelectionListener(new SelectionAdapter() {
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                public void widgetSelected(SelectionEvent arg0) {
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                    dialog.dispose();
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                }
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            });
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            dialog.pack();
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            dialog.open();
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            int x = shell.getBounds().x + (shell.getBounds().width - dialog.getSize().x) / 2;
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            int y = shell.getBounds().y + (shell.getBounds().height - dialog.getSize().y) / 2;
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            dialog.setLocation(x, y);
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                while (!dialog.isDisposed()) {
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                if (!dialog.getDisplay().readAndDispatch()) {
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                        dialog.getDisplay().sleep();
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                }
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            }
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        }
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    }
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    private GridData getSpinnerData(){
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        GridData data = new GridData(SWT.FILL,SWT.FILL,true,true);
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        data.minimumWidth = 150;
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        return data;
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    }
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    private void setTempo(Tempo tempo){
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        //comienza el undoable
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        UndoableChangeTempo undoable = UndoableChangeTempo.startUndo(); 
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        Caret caret = getEditor().getTablature().getCaret();
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        SongCoords songCoords = caret.getSongCoords();
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        MeasureCoords measure = caret.getMeasureCoords();
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        getSongManager().changeTempo(measure.getMeasure().getStart(),tempo,true);
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        //actualizo la tablatura
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        updateTablature();
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        redraw();                
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        //termia el undoable
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        getEditor().getUndoManager().addEdit(undoable.endUndo(tempo));
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    }    
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    private void showErrorMessage(String message){            
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        String name = "Error Message";
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        new MessageDialog(name,message,SWT.ICON_ERROR | SWT.OK).show(getEditor().getTablature().getShell());        
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    }    
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}