/
DiagramTimeLine.java
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/
DiagramTimeLine.java
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/*
* OpenBench LogicSniffer / SUMP project
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
*
*
* Copyright (C) 2010-2011 - J.W. Janssen, http://www.lxtreme.nl
*/
package nl.lxtreme.ols.client.diagram;
import java.awt.*;
import javax.swing.*;
import nl.lxtreme.ols.api.data.*;
import nl.lxtreme.ols.client.diagram.laf.*;
/**
* Provides a component that provides a timeline.
*/
public class DiagramTimeLine extends JComponent implements Scrollable, DiagramCursorChangeListener
{
// CONSTANTS
private static final long serialVersionUID = 1L;
// VARIABLES
private final Diagram diagram;
// CONSTRUCTORS
/**
* Creates a new DiagramTimeLine instance.
*
* @param aDiagram
* the diagram this timeline belongs to, cannot be <code>null</code>.
*/
public DiagramTimeLine( final Diagram aDiagram )
{
super();
this.diagram = aDiagram;
// Make sure to properly initialize our (custom) UI...
updateUI();
}
// METHODS
/**
* @see nl.lxtreme.ols.client.diagram.DiagramCursorChangeListener#cursorChanged(int,
* int)
*/
@Override
public void cursorChanged( final int aCursorIdx, final int aMousePos )
{
repaint();
}
/**
* @see nl.lxtreme.ols.client.diagram.DiagramCursorChangeListener#cursorRemoved(int)
*/
@Override
public void cursorRemoved( final int aCursorIdx )
{
repaint();
}
/**
* @return
*/
public final DataContainer getDataContainer()
{
return this.diagram.getDataContainer();
}
/**
* @return the diagram
*/
public final Diagram getDiagram()
{
return this.diagram;
}
/**
* @see javax.swing.Scrollable#getPreferredScrollableViewportSize()
*/
@Override
public Dimension getPreferredScrollableViewportSize()
{
return getPreferredSize();
}
/**
* Returns the scale.
*
* @return the scale, never <code>null</code>.
*/
public final double getScale()
{
return this.diagram.getScale();
}
/**
* @see javax.swing.Scrollable#getScrollableBlockIncrement(java.awt.Rectangle,
* int, int)
*/
@Override
public int getScrollableBlockIncrement( final Rectangle aVisibleRect, final int aOrientation, final int aDirection )
{
if ( aOrientation == SwingConstants.VERTICAL )
{
return 0;
}
return aVisibleRect.width - DiagramTimeLineUI.TIMELINE_INCREMENT;
}
/**
* @see javax.swing.Scrollable#getScrollableTracksViewportHeight()
*/
@Override
public boolean getScrollableTracksViewportHeight()
{
return true;
}
/**
* @see javax.swing.Scrollable#getScrollableTracksViewportWidth()
*/
@Override
public boolean getScrollableTracksViewportWidth()
{
return false;
}
/**
* @see javax.swing.Scrollable#getScrollableUnitIncrement(java.awt.Rectangle,
* int, int)
*/
@Override
public int getScrollableUnitIncrement( final Rectangle aVisibleRect, final int aOrientation, final int aDirection )
{
if ( aOrientation == SwingConstants.VERTICAL )
{
return 0;
}
int currentPosition = aVisibleRect.x;
int maxUnitIncrement = DiagramTimeLineUI.TIMELINE_INCREMENT;
// Return the number of pixels between currentPosition
// and the nearest tick mark in the indicated direction.
if ( aDirection < 0 )
{
int newPosition = currentPosition - ( currentPosition / maxUnitIncrement ) * maxUnitIncrement;
return ( newPosition == 0 ) ? maxUnitIncrement : newPosition;
}
else
{
return ( ( currentPosition / maxUnitIncrement ) + 1 ) * maxUnitIncrement - currentPosition;
}
}
/**
* @see javax.swing.JComponent#updateUI()
*/
@Override
public void updateUI()
{
setUI( new DiagramTimeLineUI() );
}
}
/* EOF */