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/*
* Copyright 1999-2006 The Apache Software Foundation.
*
* Licensed 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.
*/
/* $Id$ */
package org.apache.fop.render;
// FOP
import org.apache.fop.area.Area;
import org.apache.fop.area.Trait;
import org.apache.fop.fonts.Font;
import org.apache.fop.fonts.FontInfo;
import org.apache.fop.fonts.FontSetup;
import org.apache.fop.fonts.FontTriplet;
// Java
import java.awt.Color;
import java.util.List;
/** Abstract base class of "Print" type renderers. */
public abstract class PrintRenderer extends AbstractRenderer {
/** Font configuration */
protected FontInfo fontInfo;
/** list of fonts */
protected List fontList = null;
/**
* Set up the font info
*
* @param inFontInfo font info to set up
*/
public void setupFontInfo(FontInfo inFontInfo) {
this.fontInfo = inFontInfo;
FontSetup.setup(fontInfo, fontList, userAgent);
}
/**
* Returns the internal font key fot a font triplet coming from the area tree
* @param area the area from which to retrieve the font triplet information
* @return the internal font key (F1, F2 etc.) or null if not found
*/
protected String getInternalFontNameForArea(Area area) {
FontTriplet triplet = (FontTriplet)area.getTrait(Trait.FONT);
return fontInfo.getInternalFontKey(triplet);
}
/**
* Returns a Font object constructed based on the font traits in an area
* @param area the area from which to retrieve the font triplet information
* @return the requested Font instance or null if not found
*/
protected Font getFontFromArea(Area area) {
FontTriplet triplet = (FontTriplet)area.getTrait(Trait.FONT);
int size = ((Integer)area.getTrait(Trait.FONT_SIZE)).intValue();
return fontInfo.getFontInstance(triplet, size);
}
/**
* Lightens up a color for groove, ridge, inset and outset border effects.
* @param col the color to lighten up
* @param factor factor by which to lighten up (negative values darken the color)
* @return the modified color
*/
protected Color lightenColor(Color col, float factor) {
float[] cols = new float[3];
cols = col.getColorComponents(cols);
if (factor > 0) {
cols[0] += (1.0 - cols[0]) * factor;
cols[1] += (1.0 - cols[1]) * factor;
cols[2] += (1.0 - cols[2]) * factor;
} else {
cols[0] -= cols[0] * -factor;
cols[1] -= cols[1] * -factor;
cols[2] -= cols[2] * -factor;
}
return new Color(cols[0], cols[1], cols[2]);
}
}
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