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Rendering intents for images

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Jakub Melka
2019-10-18 17:28:45 +02:00
parent a35957cb53
commit 14419980cc
5 changed files with 60 additions and 6 deletions
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35
PdfForQtLib/sources/pdfimage.cpp
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@@ -46,10 +46,16 @@ struct PDFJPEGDCTSource
int startByte = 0;
};
PDFImage PDFImage::createImage(const PDFDocument* document, const PDFStream* stream, PDFColorSpacePointer colorSpace, bool isSoftMask, PDFRenderErrorReporter* errorReporter)
PDFImage PDFImage::createImage(const PDFDocument* document,
const PDFStream* stream,
PDFColorSpacePointer colorSpace,
bool isSoftMask,
RenderingIntent renderingIntent,
PDFRenderErrorReporter* errorReporter)
{
PDFImage image;
image.m_colorSpace = colorSpace;
image.m_renderingIntent = renderingIntent;
const PDFDictionary* dictionary = stream->getDictionary();
QByteArray content = document->getDecodedStream(stream);
@@ -86,6 +92,28 @@ PDFImage PDFImage::createImage(const PDFDocument* document, const PDFStream* str
throw PDFRendererException(RenderErrorType::Error, PDFTranslationContext::tr("Regular image can't have Matte entry (used for soft masks)."));
}
// Set rendering intent
if (dictionary->hasKey("Intent"))
{
QByteArray renderingIntentName = loader.readNameFromDictionary(dictionary, "Intent");
if (renderingIntentName == "Perceptual")
{
image.m_renderingIntent = RenderingIntent::Perceptual;
}
else if (renderingIntentName == "AbsoluteColorimetric")
{
image.m_renderingIntent = RenderingIntent::AbsoluteColorimetric;
}
else if (renderingIntentName == "RelativeColorimetric")
{
image.m_renderingIntent = RenderingIntent::RelativeColorimetric;
}
else if (renderingIntentName == "Saturation")
{
image.m_renderingIntent = RenderingIntent::Saturation;
}
}
// Fill Mask
if (dictionary->hasKey("Mask"))
{
@@ -98,7 +126,7 @@ PDFImage PDFImage::createImage(const PDFDocument* document, const PDFStream* str
else if (object.isStream())
{
// TODO: Implement Mask Image
PDFImage maskImage = createImage(document, object.getStream(), colorSpace, false, errorReporter);
PDFImage maskImage = createImage(document, object.getStream(), colorSpace, false, renderingIntent, errorReporter);
maskingType = PDFImageData::MaskingType::Image;
throw PDFRendererException(RenderErrorType::NotImplemented, PDFTranslationContext::tr("Mask image is not implemented."));
}
@@ -110,7 +138,7 @@ PDFImage PDFImage::createImage(const PDFDocument* document, const PDFStream* str
if (softMaskObject.isStream())
{
PDFImage softMaskImage = createImage(document, softMaskObject.getStream(), PDFColorSpacePointer(new PDFDeviceGrayColorSpace()), true, errorReporter);
PDFImage softMaskImage = createImage(document, softMaskObject.getStream(), PDFColorSpacePointer(new PDFDeviceGrayColorSpace()), true, renderingIntent, errorReporter);
maskingType = PDFImageData::MaskingType::SoftMask;
image.m_softMask = qMove(softMaskImage.m_imageData);
}
@@ -530,6 +558,7 @@ PDFImage PDFImage::createImage(const PDFDocument* document, const PDFStream* str
parameters.hasEndOfBlock = loader.readBooleanFromDictionary(filterParamsDictionary, "EndOfBlock", true);
parameters.hasBlackIsOne = loader.readBooleanFromDictionary(filterParamsDictionary, "BlackIs1", false);
parameters.damagedRowsBeforeError = loader.readIntegerFromDictionary(filterParamsDictionary, "DamagedRowsBeforeError", 0);
parameters.decode = !decode.empty() ? qMove(decode) : std::vector<PDFReal>({ 0.0, 1.0 });
QByteArray imageDataBuffer = document->getDecodedStream(stream);
PDFCCITTFaxDecoder decoder(&imageDataBuffer, parameters);