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/*
* Copyright (c) 2012, Metron, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Metron, Inc. nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL METRON, INC. BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.metsci.glimpse.layout;
import com.metsci.glimpse.axis.Axis1D;
import com.metsci.glimpse.axis.Axis2D;
import com.metsci.glimpse.axis.AxisNotSetException;
import com.metsci.glimpse.axis.factory.AxisFactory1D;
import com.metsci.glimpse.axis.factory.AxisFactory2D;
import com.metsci.glimpse.axis.factory.DefaultAxisFactory1D;
import com.metsci.glimpse.context.GlimpseBounds;
import com.metsci.glimpse.context.GlimpseContext;
import com.metsci.glimpse.context.GlimpseTarget;
import com.metsci.glimpse.context.GlimpseTargetStack;
/**
* A GlimpseLayout which can provide axes to its child
* {@link com.metsci.glimpse.painter.base.GlimpsePainter}s.
* GlimpseAxisLayout1D is often used for displaying timelines
* or plot axes where dimensions only matter along one
* orientation (the other orientation is measured simply
* in pixel space). This is contrasted with
* {@link GlimpseAxisLayout2D} where both horizontal and
* verical coordinates of the GlimpseLayout have associated
* {@link com.metsci.glimpse.axis.Axis1D} axes.
*
* @author ulman
*/
public abstract class GlimpseAxisLayout1D extends GlimpseLayout
{
protected GlimpseLayoutCache cache;
protected Axis1D axis;
protected boolean defaultSet = false;
protected AxisFactory1D factory;
public GlimpseAxisLayout1D( GlimpseLayout parent, String name, Axis1D axis )
{
super( parent, name );
this.axis = axis;
this.cache = new GlimpseLayoutCache( );
}
public GlimpseAxisLayout1D( GlimpseLayout parent, Axis1D axis )
{
this( parent, null, axis );
}
public GlimpseAxisLayout1D( String name, Axis1D axis )
{
this( null, name, axis );
}
public GlimpseAxisLayout1D( Axis1D axis )
{
this( null, null, axis );
}
public GlimpseAxisLayout1D( GlimpseLayout parent, String name )
{
this( parent, name, null );
}
public GlimpseAxisLayout1D( GlimpseLayout parent )
{
this( parent, null, null );
}
public GlimpseAxisLayout1D( )
{
this( null, null, null );
}
@Override
protected void preLayout( GlimpseTargetStack stack, GlimpseBounds bounds )
{
Axis1D contextAxis = getAxis( stack );
if ( contextAxis == null ) throw new AxisNotSetException( stack );
contextAxis.setSizePixels( getSize( bounds ) );
}
public abstract boolean isHorizontal( );
protected abstract Axis1D getAxis( Axis2D axis );
protected abstract int getSize( GlimpseBounds bounds );
public void clearCache( )
{
this.cache.clear( );
// descend recursively clearing caches
// stop if a child has its' axis explicitly set
// (because it is not using its' parent's axes)
for ( GlimpseTarget target : getTargetChildren( ) )
{
if ( target instanceof GlimpseAxisLayout1D )
{
GlimpseAxisLayout1D layout = ( GlimpseAxisLayout1D ) target;
if ( !layout.isAxisSet( ) )
{
layout.clearCache( );
}
}
}
}
public void setAxis( Axis1D axis )
{
// set the axis for all contexts, reset the cache
this.clearCache( );
this.defaultSet = false;
this.axis = axis;
}
public void setAxis( GlimpseTargetStack stack, Axis1D axis )
{
cache.setValue( stack, axis );
}
public void setAxis( GlimpseContext context, Axis1D axis )
{
cache.setValue( context, axis );
}
public AxisFactory1D getAxisFactory( )
{
return this.factory;
}
public void setAxisFactory( AxisFactory1D factory )
{
this.factory = factory;
}
public boolean isAxisSet( )
{
return this.axis != null;
}
public boolean isAxisFactorySet( )
{
return this.factory != null;
}
public Axis1D getAxis( )
{
return this.axis;
}
public Axis1D getAxis( GlimpseContext context )
{
return getAxis( context.getTargetStack( ) );
}
// search up through the stack until a layout with an axis is found
// then retrieve or create a version of that axis for the current stack and return it
public Axis1D getAxis( GlimpseTargetStack stack )
{
AxisFactory1D factory = getAxisFactory0( stack );
for ( GlimpseTarget target : stack.getTargetList( ) )
{
if ( target instanceof GlimpseAxisLayout2D )
{
GlimpseAxisLayout2D layout = ( GlimpseAxisLayout2D ) target;
if ( layout.isAxisSet( ) )
{
return getCachedAxis0( getAxis( layout.getAxis( ) ), factory, stack );
}
}
else if ( target instanceof GlimpseAxisLayout1D )
{
GlimpseAxisLayout1D layout = ( GlimpseAxisLayout1D ) target;
if ( layout.isAxisSet( ) )
{
return getCachedAxis0( layout.getAxis( ), factory, stack );
}
}
}
return null;
}
protected AxisFactory1D getAxisFactory0( GlimpseTargetStack stack )
{
for ( GlimpseTarget target : stack.getTargetList( ) )
{
if ( target instanceof GlimpseAxisLayout2D )
{
GlimpseAxisLayout2D layout = ( GlimpseAxisLayout2D ) target;
if ( layout.isAxisFactorySet( ) )
{
AxisFactory2D factory = layout.getAxisFactory( );
return isHorizontal( ) ? factory.getAxisFactoryX( stack ) : factory.getAxisFactoryY( stack );
}
}
else if ( target instanceof GlimpseAxisLayout1D )
{
GlimpseAxisLayout1D layout = ( GlimpseAxisLayout1D ) target;
if ( layout.isAxisFactorySet( ) )
{
return layout.getAxisFactory( );
}
}
}
return null;
}
// retrieve an axis for the given stack from the cache if it exists
// otherwise, create an axis using the given parent_axis and factory and store it in the cache
protected Axis1D getCachedAxis0( Axis1D parent_axis, AxisFactory1D factory, GlimpseTargetStack stack )
{
Axis1D newAxis = null;
if ( !defaultSet )
{
defaultSet = true;
newAxis = parent_axis;
cache.setValue( stack, newAxis );
}
else
{
newAxis = cache.getValueNoBoundsCheck( stack );
if ( newAxis == null )
{
if ( factory != null )
{
newAxis = factory.newAxis( stack, parent_axis );
}
else
{
newAxis = DefaultAxisFactory1D.newAxis( parent_axis );
}
newAxis.setSizePixels( getSize( stack.getBounds( ) ) );
cache.setValue( stack, newAxis );
}
}
return newAxis;
}
protected Axis1D getCachedAxis0( Axis1D parent_axis, AxisFactory1D factory, GlimpseContext context )
{
return getCachedAxis0( parent_axis, factory, context.getTargetStack( ) );
}
}
