/*
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.flex.compiler.internal.embedding.transcoders;
import java.util.Collection;
import java.util.List;
import org.apache.flex.compiler.common.ISourceLocation;
import org.apache.flex.compiler.internal.embedding.EmbedAttribute;
import org.apache.flex.compiler.internal.embedding.EmbedData;
import org.apache.flex.compiler.internal.workspaces.Workspace;
import org.apache.flex.compiler.problems.EmbedScalingGridProblem;
import org.apache.flex.compiler.problems.ICompilerProblem;
import org.apache.flex.swf.tags.DefineScalingGridTag;
import org.apache.flex.swf.tags.DefineSpriteTag;
import org.apache.flex.swf.tags.ITag;
import org.apache.flex.swf.types.Rect;
/**
* Abstract class which should be extended by any embedding transcoder
* which supports scaling. Currently images and movies.
*/
public abstract class ScalableTranscoder extends TranscoderBase
{
/**
* @param data
* @param workspace
*/
protected ScalableTranscoder(EmbedData data, Workspace workspace)
{
super(data, workspace);
this.scaling = false;
}
protected boolean scaling;
protected Integer scaleGridBottom;
protected Integer scaleGridLeft;
protected Integer scaleGridRight;
protected Integer scaleGridTop;
@Override
protected boolean setAttribute(EmbedAttribute attribute)
{
boolean isSupported = true;
switch (attribute)
{
case SCALE_GRID_BOTTOM:
scaleGridBottom = (Integer)data.getAttribute(EmbedAttribute.SCALE_GRID_BOTTOM);
break;
case SCALE_GRID_LEFT:
scaleGridLeft = (Integer)data.getAttribute(EmbedAttribute.SCALE_GRID_LEFT);
break;
case SCALE_GRID_RIGHT:
scaleGridRight = (Integer)data.getAttribute(EmbedAttribute.SCALE_GRID_RIGHT);
break;
case SCALE_GRID_TOP:
scaleGridTop = (Integer)data.getAttribute(EmbedAttribute.SCALE_GRID_TOP);
break;
default:
isSupported = super.setAttribute(attribute);
}
return isSupported;
}
@Override
protected boolean checkAttributeValues(ISourceLocation location, Collection<ICompilerProblem> problems)
{
boolean result = super.checkAttributeValues(location, problems);
if (!result)
return false;
// if any of the scaling values are set, they all need to be set
if (scaleGridBottom != null || scaleGridLeft != null || scaleGridRight != null || scaleGridTop != null)
{
if (scaleGridBottom == null || scaleGridLeft == null || scaleGridRight == null || scaleGridTop == null)
{
problems.add(new EmbedScalingGridProblem(location));
result = false;
}
else
{
// values ok, so turn on scaling
scaling = true;
}
}
return result;
}
protected DefineScalingGridTag buildScalingGrid()
{
Rect rect = new Rect(scaleGridLeft, scaleGridRight, scaleGridTop, scaleGridBottom);
DefineScalingGridTag scalingGrid = new DefineScalingGridTag();
scalingGrid.setSplitter(rect);
return scalingGrid;
}
protected DefineSpriteTag buildSprite(List<ITag> spriteTags, int frameCount, DefineScalingGridTag scalingGrid, Collection<ITag> tags)
{
DefineSpriteTag sprite = new DefineSpriteTag(frameCount, spriteTags);
if (scalingGrid != null)
{
scalingGrid.setCharacter(sprite);
tags.add(scalingGrid);
}
return sprite;
}
@Override
public boolean equals(Object o)
{
if (!super.equals(o))
return false;
if (!(o instanceof ScalableTranscoder))
return false;
ScalableTranscoder t = (ScalableTranscoder)o;
if (scaling != t.scaling)
return false;
// if scaling is enabled, the grid must match to be equal
if (scaling)
{
if (!scaleGridBottom.equals(t.scaleGridBottom) ||
!scaleGridLeft.equals(t.scaleGridLeft) ||
!scaleGridRight.equals(t.scaleGridRight) ||
!scaleGridTop.equals(t.scaleGridTop))
{
return false;
}
}
return true;
}
@Override
public int hashCode()
{
int hashCode = super.hashCode();
hashCode += (scaling ? 1 : 0);
if (scaleGridBottom != null)
hashCode ^= scaleGridBottom.hashCode();
if (scaleGridLeft != null)
hashCode ^= scaleGridLeft.hashCode();
if (scaleGridRight != null)
hashCode ^= scaleGridRight.hashCode();
if (scaleGridTop != null)
hashCode ^= scaleGridTop.hashCode();
return hashCode;
}
}