public void validate(PreflightContext context) throws ValidationException {
PreflightPath vPath = context.getValidationPath();
if (vPath.isEmpty()) {
return;
} else if (!vPath.isExpectedType(PDFont.class)) {
context.addValidationError(
new ValidationError(
PreflightConstants.ERROR_FONTS_INVALID_DATA,
"Font validation process needs at least one PDFont object"));
} else {
PDFont font = (PDFont) vPath.peek();
FontContainer fontContainer = context.getFontContainer(font.getCOSObject());
if (fontContainer == null) { // if fontContainer isn't null the font is already checked
FontValidator<? extends FontContainer> validator = getFontValidator(context, font);
if (validator != null) validator.validate();
}
}
}
/**
* Look up in the closest PDResources objects if there are a default ColorSpace. If there are,
* check that is a authorized ColorSpace.
*
* @param colorSpace
* @return true if the default colorspace is a right one, false otherwise.
*/
protected boolean processDefaultColorSpace(PDColorSpace colorSpace) {
boolean result = false;
// get default color space
PreflightPath vPath = context.getValidationPath();
PDResources resources = vPath.getClosestPathElement(PDResources.class);
if (resources != null) {
PDColorSpace defaultCS = null;
try {
if (colorSpace.getName().equals(ColorSpaces.DeviceCMYK.getLabel())
&& resources.hasColorSpace(COSName.DEFAULT_CMYK)) {
defaultCS = resources.getColorSpace(COSName.DEFAULT_CMYK);
} else if (colorSpace.getName().equals(ColorSpaces.DeviceRGB.getLabel())
&& resources.hasColorSpace(COSName.DEFAULT_RGB)) {
defaultCS = resources.getColorSpace(COSName.DEFAULT_RGB);
} else if (colorSpace.getName().equals(ColorSpaces.DeviceGray.getLabel())
&& resources.hasColorSpace(COSName.DEFAULT_GRAY)) {
defaultCS = resources.getColorSpace(COSName.DEFAULT_GRAY);
}
} catch (IOException e) {
context.addValidationError(
new ValidationError(
ERROR_GRAPHIC_INVALID_COLOR_SPACE,
"Unable to read default color space : " + e.getMessage(),
e));
}
if (defaultCS != null) {
// defaultCS is valid if the number of errors hasn't changed
int nbOfErrors = context.getDocument().getResult().getErrorsList().size();
processAllColorSpace(defaultCS);
int newNbOfErrors = context.getDocument().getResult().getErrorsList().size();
result = (nbOfErrors == newNbOfErrors);
}
}
return result;
}
