de.intarsys.pdf.content.GraphicsState Maven / Gradle / Ivy
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/*
* Copyright (c) 2007, intarsys consulting GmbH
*
* 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 intarsys 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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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 de.intarsys.pdf.content;
import de.intarsys.pdf.pd.PDColorSpace;
import de.intarsys.pdf.pd.PDExtGState;
import de.intarsys.tools.attribute.Attribute;
import de.intarsys.tools.attribute.AttributeMap;
import de.intarsys.tools.attribute.IAttributeSupport;
import java.awt.Shape;
import java.awt.geom.AffineTransform;
import java.util.IdentityHashMap;
/**
* The state information for performing graphic operations.
*/
public final class GraphicsState implements IAttributeSupport {
private final AttributeMap attributes = new AttributeMap();
/**
* A code defining the shape of a lines endpoint
*
*
* initial value: 0 (square butt)
*
*/
public int capStyle;
/**
* all graphics operations are clipped at this boundary
*
*
* initial value: entire page
*
*/
public Shape clip;
/**
* The dash pattern used for stroking
*
*
* initial value: solid line
*
*/
public float[] dashPattern;
/**
* The phase of the dash pattern
*
*
* initial value: 0
*
*/
public float dashPhase;
/**
* A code defining the shape of line joins
*
*
* initial value: 0 (miter)
*
*/
public int joinStyle;
/**
* The thickness of stroked lines
*
*
* initial value: 1
*
*/
public float lineWidth;
/**
* The maximum length of mitered line joins
*
*
* initial value: 10
*
*/
public float miterLimit;
/**
* The alpha (transparency) value for non stroking operations.
*
* This is contained in the ExtGState but is cached as it is heavily uesd.
*/
public float nonStrokeAlphaValue;
public PDColorSpace nonStrokeColorSpace;
public float[] nonStrokeColorValues;
/**
* The alpha (transparency) value for stroking operations
*
* This is contained in the ExtGState but is cached as it is heavily uesd.
*/
public float strokeAlphaValue;
public PDColorSpace strokeColorSpace;
public PDExtGState extState;
public float[] strokeColorValues;
/**
* The parameters used for rendering text operations.
*/
public TextState textState;
public AffineTransform transform;
/**
* Create a new graphic state for the renderer
*/
public GraphicsState() {
dashPattern = new float[0];
dashPhase = 0;
capStyle = 0;
joinStyle = 0;
lineWidth = 1f;
miterLimit = 10f;
nonStrokeAlphaValue = 1;
strokeAlphaValue = 1;
textState = new TextState();
extState = null;
transform = new AffineTransform();
}
/**
* Copy constructor for GraphicsState
*
* @param originalState The state to copy.
*/
protected GraphicsState(GraphicsState originalState) {
capStyle = originalState.capStyle;
dashPattern = originalState.dashPattern;
dashPhase = originalState.dashPhase;
if (originalState.extState != null) {
extState =
(PDExtGState) PDExtGState.META.createFromCos(originalState.extState.cosGetObject().copyShallow());
}
joinStyle = originalState.joinStyle;
lineWidth = originalState.lineWidth;
miterLimit = originalState.miterLimit;
nonStrokeAlphaValue = originalState.nonStrokeAlphaValue;
nonStrokeColorSpace = originalState.nonStrokeColorSpace;
nonStrokeColorValues = originalState.nonStrokeColorValues;
strokeAlphaValue = originalState.strokeAlphaValue;
strokeColorSpace = originalState.strokeColorSpace;
strokeColorValues = originalState.strokeColorValues;
textState = originalState.textState.copy();
transform = originalState.transform;
// clip may be tied to transform!
clip = originalState.clip;
}
public GraphicsState copy() {
return new GraphicsState(this);
}
/**
* Get a generic attribute value.
*
* ATTENTION: to speed up a little, an {@link IdentityHashMap} is used for
* implementing {@link IAttributeSupport}. Be sure to use appropriate keys
* (for example {@link Attribute}), not {@link String}.
*
* @see de.intarsys.tools.attribute.IAttributeSupport#getAttribute(java.lang.Object)
*/
@Override
public Object getAttribute(Object key) {
return attributes.getAttribute(key);
}
/**
* Clear a generic attribute value.
*
* ATTENTION: to speed up a little, an {@link IdentityHashMap} is used for
* implementing {@link IAttributeSupport}. Be sure to use appropriate keys
* (for example {@link Attribute}), not {@link String}.
*
* @see de.intarsys.tools.attribute.IAttributeSupport#removeAttribute(java.lang.Object)
*/
@Override
public Object removeAttribute(Object key) {
return attributes.removeAttribute(key);
}
/**
* Set a generic attribute value.
*
* ATTENTION: to speed up a little, an {@link IdentityHashMap} is used for
* implementing {@link IAttributeSupport}. Be sure to use appropriate keys
* (for example {@link Attribute}), not {@link String}.
*
* @see de.intarsys.tools.attribute.IAttributeSupport#setAttribute(java.lang.Object,
* java.lang.Object)
*/
@Override
public Object setAttribute(Object key, Object value) {
return attributes.setAttribute(key, value);
}
}