de.intarsys.pdf.pd.PDAppearanceTools Maven / Gradle / Ivy
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This is a fork of http://sourceforge.net/projects/jpodlib/ as development seems to be frozen.
We're providing some bug fixes along with deployments to maven.
/*
* 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.pd;
import de.intarsys.pdf.cos.COSDictionary;
import de.intarsys.pdf.cos.COSName;
import de.intarsys.pdf.cos.COSObject;
import java.util.HashSet;
import java.util.Iterator;
/**
* A tool class for common tasks with {@link PDAppearance} instances.
*/
public class PDAppearanceTools {
private PDAppearanceTools() {
}
protected static PDForm createAppearanceForm() {
return (PDForm) PDForm.META.createNew();
}
public static boolean createState(PDAppearance appearance, String state) {
boolean result = false;
COSName cosState = COSName.create(state);
//
COSName[] keys = {PDAppearance.DK_N, PDAppearance.DK_R, PDAppearance.DK_D};
for (COSName key : keys) {
COSDictionary dict = appearance.cosGetDict().get(key).asDictionary();
if (dict != null) {
COSObject form = dict.get(cosState);
if (form.isNull()) {
dict.put(cosState, createAppearanceForm().cosGetObject());
result = true;
}
}
}
return result;
}
/**
* Given a PDAppearance, return the /D (down) appearance for the state
* "state".
*
* @param appearance The PDAppearance structure containing the appearance
* descriptions
* @return Given a PDAppearance, return the /D (down) appearance for the
* state "state".
*/
public static PDForm getDownAppearance(PDAppearance appearance, COSName state) {
PDForm form = appearance.getDownAppearance(state);
if (form == null) {
form = createAppearanceForm();
appearance.setDownAppearance(state, form);
}
return form;
}
/**
* Given a PDAppearance, return the /N (normal) appearance for the state
* "state".
*
* @param appearance The PDAppearance structure containing the appearance
* descriptions
* @return Given a PDAppearance, return the /N (normal) appearance for the
* state "state".
*/
public static PDForm getNormalAppearance(PDAppearance appearance, COSName state) {
PDForm form = appearance.getNormalAppearance(state);
if (form == null) {
form = createAppearanceForm();
appearance.setNormalAppearance(state, form);
}
return form;
}
/**
* Given a PDAppearance, return the /R (rollover) appearance for the state
* "state".
*
* @param appearance The PDAppearance structure containing the appearance
* descriptions
* @return Given a PDAppearance, return the /R (rollover) appearance for the
* state "state".
*/
public static PDForm getRolloverAppearance(PDAppearance appearance, COSName state) {
PDForm form = appearance.getRolloverAppearance(state);
if (form == null) {
form = createAppearanceForm();
appearance.setRolloverAppearance(state, form);
}
return form;
}
public static void renameState(PDAppearance appearance, String oldState, String newState) {
COSName cosOldState = COSName.create(oldState);
COSName cosNewState = COSName.create(newState);
COSName[] keys = {PDAppearance.DK_N, PDAppearance.DK_R, PDAppearance.DK_D};
for (COSName key : keys) {
COSDictionary dict = appearance.cosGetDict().get(key).asDictionary();
if (dict != null) {
COSObject form = dict.get(cosOldState);
if (!form.isNull()) {
dict.remove(cosOldState);
dict.put(cosNewState, form);
}
}
}
}
public static void resetAppearance(COSDictionary appearanceDict) {
if (appearanceDict == null) {
return;
}
for (Iterator i = new HashSet(appearanceDict.keySet()).iterator(); i.hasNext(); ) {
COSName appKey = (COSName) i.next();
COSObject appValue = appearanceDict.get(appKey);
if (appValue instanceof COSDictionary) {
COSDictionary appValueDict = (COSDictionary) appValue;
for (Iterator j = new HashSet(appValueDict.keySet()).iterator(); j.hasNext(); ) {
COSName stateKey = (COSName) j.next();
appValueDict.put(stateKey, PDForm.META.createNew().cosGetObject());
}
} else {
appearanceDict.put(appKey, PDForm.META.createNew().cosGetObject());
}
}
}
public static void resetAppearance(PDAppearance appearance) {
resetAppearance(appearance.cosGetDict());
}
}