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Blending output with paper

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Jakub Melka
2021-02-11 19:42:55 +01:00
parent e743761ce4
commit 3da8cf2252
3 changed files with 92 additions and 59 deletions
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13
Pdf4QtLib/sources/pdftransparencyrenderer.h
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@ -214,10 +214,10 @@ public:
OverprintMode overprintMode,
QRect blendRegion);
private:
void fillProcessColorChannels(PDFColorComponent value);
void fillChannel(size_t channel, PDFColorComponent value);
private:
PDFPixelFormat m_format;
std::size_t m_width;
std::size_t m_height;
@ -443,9 +443,11 @@ public:
/// This function should be called only after call to \p endPaint. After painting,
/// when it is finished, the result float image can be converted to QImage with
/// this function, but only, if the float image is RGB. If error occurs, empty
/// image is returned.
/// \param use16bit
QImage toImage(bool use16Bit) const;
/// image is returned. Also, result image can be painted onto opaque paper
/// with paper color \p paperColor.
/// \param use16bit Produce 16-bit image instead of standard 8-bit
/// \param usePaper Blend image with opaque paper, with color \p paperColor
QImage toImage(bool use16Bit, bool usePaper = false, PDFRGB paperColor = PDFRGB()) const;
virtual void performPathPainting(const QPainterPath& path, bool stroke, bool fill, bool text, Qt::FillRule fillRule) override;
virtual void performClipping(const QPainterPath& path, Qt::FillRule fillRule) override;
@ -501,6 +503,9 @@ private:
PDFMappedColor createMappedColor(const PDFColor& sourceColor,
const PDFAbstractColorSpace* sourceColorSpace);
/// Converts RGB bitmap to the image.
QImage toImageImpl(const PDFFloatBitmapWithColorSpace& floatImage, bool use16Bit) const;
PDFFloatBitmapWithColorSpace* getInitialBackdrop();
PDFFloatBitmapWithColorSpace* getImmediateBackdrop();
PDFFloatBitmapWithColorSpace* getBackdrop();