/*****************************************************************************
*
* 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.pdfbox.preflight.graphic;
import static org.apache.pdfbox.preflight.PreflightConstants.ERROR_GRAPHIC_INVALID_COLOR_SPACE_FORBIDDEN;
import org.apache.pdfbox.pdmodel.graphics.color.PDColorSpace;
import org.apache.pdfbox.pdmodel.graphics.color.PDIndexed;
import org.apache.pdfbox.preflight.PreflightContext;
import org.apache.pdfbox.preflight.ValidationResult.ValidationError;
/**
* This class defines restrictions on Color Spaces. It checks the consistency of the Color space with the
* DestOutputIntent, if the color space isn't a Device Color space or a Indexed color space using Device the validation
* will fail.
*/
public class DeviceColorSpaceHelper extends StandardColorSpaceHelper
{
public DeviceColorSpaceHelper(PreflightContext _context, PDColorSpace _cs)
{
super(_context, _cs);
}
/**
* This method updates the given list with a ValidationError (ERROR_GRAPHIC_INVALID_PATTERN_COLOR_SPACE_FORBIDDEN)
* and returns false.
*/
protected void processPatternColorSpace(PDColorSpace pdcs)
{
context.addValidationError(new ValidationError(ERROR_GRAPHIC_INVALID_COLOR_SPACE_FORBIDDEN,
"Pattern ColorSpace is forbidden"));
}
/**
* This method updates the given list with a ValidationError (ERROR_GRAPHIC_INVALID_PATTERN_COLOR_SPACE_FORBIDDEN)
* and returns false.
*/
protected void processDeviceNColorSpace(PDColorSpace pdcs)
{
context.addValidationError(new ValidationError(ERROR_GRAPHIC_INVALID_COLOR_SPACE_FORBIDDEN,
"DeviceN ColorSpace is forbidden"));
}
/**
* Indexed color space is authorized only if the BaseColorSpace is a DeviceXXX color space. In all other cases the
* given list is updated with a ValidationError (ERROR_GRAPHIC_INVALID_PATTERN_COLOR_SPACE_FORBIDDEN) and returns
* false.
*/
protected void processIndexedColorSpace(PDColorSpace pdcs)
{
PDIndexed indexed = (PDIndexed) pdcs;
PDColorSpace based = indexed.getBaseColorSpace();
ColorSpaces colorSpace = ColorSpaces.valueOf(based.getName());
switch (colorSpace)
{
case Indexed:
case Indexed_SHORT:
case Pattern:
context.addValidationError(new ValidationError(ERROR_GRAPHIC_INVALID_COLOR_SPACE_FORBIDDEN, colorSpace
.getLabel() + " ColorSpace is forbidden"));
break;
default:
processAllColorSpace(based);
}
}
}