org.apache.pdfbox.debugger.fontencodingpane.FontEncodingPaneController Maven / Gradle / Ivy
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The Apache PDFBox library is an open source Java tool for working with PDF documents.
This artefact contains the PDFDebugger.
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/*
* Copyright 2015 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.
*/
package org.apache.pdfbox.debugger.fontencodingpane;
import java.awt.geom.GeneralPath;
import java.awt.geom.Rectangle2D;
import java.io.IOException;
import javax.swing.JPanel;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.pdfbox.cos.COSDictionary;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.pdmodel.PDResources;
import org.apache.pdfbox.pdmodel.font.PDFont;
import org.apache.pdfbox.pdmodel.font.PDSimpleFont;
import org.apache.pdfbox.pdmodel.font.PDType0Font;
import org.apache.pdfbox.pdmodel.font.PDType3Font;
abstract class FontPane
{
abstract JPanel getPanel();
/**
* Calculate vertical bounds common to all rendered glyphs.
*
* @param tableData
* @param glyphIndex the table index that has glyphs.
* @return an array with two elements: min lower bound (but max 0), and max upper bound (but min
* 0).
*/
double[] getYBounds(Object[][] tableData, int glyphIndex)
{
double minY = 0;
double maxY = 0;
for (Object[] aTableData : tableData)
{
GeneralPath path = (GeneralPath) aTableData[glyphIndex];
Rectangle2D bounds2D = path.getBounds2D();
if (bounds2D.isEmpty())
{
continue;
}
minY = Math.min(minY, bounds2D.getMinY());
maxY = Math.max(maxY, bounds2D.getMaxY());
}
return new double[]{minY, maxY};
}
}
/**
* @author Khyrul Bashar
*
* A class that shows the glyph table or CIDToGID map depending on the font type. PDSimple and
* PDType0Font are supported.
*/
public class FontEncodingPaneController
{
private static final Log LOG = LogFactory.getLog(FontEncodingPaneController.class);
private FontPane fontPane;
/**
* Constructor.
* @param fontName COSName instance, Font name in the fonts dictionary.
* @param dictionary COSDictionary instance for resources which resides the font.
*/
public FontEncodingPaneController(COSName fontName, COSDictionary dictionary)
{
PDResources resources = new PDResources(dictionary);
try
{
PDFont font = resources.getFont(fontName);
if (font instanceof PDType3Font)
{
fontPane = new Type3Font((PDType3Font) font, resources);
}
else if (font instanceof PDSimpleFont)
{
fontPane = new SimpleFont((PDSimpleFont) font);
}
else if (font instanceof PDType0Font)
{
fontPane = new Type0Font(((PDType0Font) font).getDescendantFont(), (PDType0Font) font);
}
}
catch (IOException e)
{
LOG.error(e.getMessage(), e);
}
}
/**
* Return a pane to display details of a font.
*
* @return a pane for font information, or null if that font type is not supported.
*/
public JPanel getPane()
{
if (fontPane != null)
{
return fontPane.getPanel();
}
return null;
}
}