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Draw buffer commiting

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Jakub Melka
2021-02-07 18:59:39 +01:00
parent 6a9cc5c5d6
commit f0b1707d12
4 changed files with 95 additions and 19 deletions
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23
Pdf4QtLib/sources/pdftransparencyrenderer.h
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@ -200,6 +200,7 @@ public:
/// \param mode Blend mode
/// \param activeColorChannels Active color channels
/// \param overprintMode Overprint mode
/// \param blendRegion Blend region
static void blend(const PDFFloatBitmap& source,
PDFFloatBitmap& target,
const PDFFloatBitmap& backdrop,
@ -210,7 +211,8 @@ public:
BlendMode mode,
bool knockoutGroup,
uint32_t activeColorChannels,
OverprintMode overprintMode);
OverprintMode overprintMode,
QRect blendRegion);
private:
void fillProcessColorChannels(PDFColorComponent value);
@ -354,13 +356,24 @@ public:
void clear();
/// Marks given area as modified
void modify(QRect rect);
void modify(QRect rect, bool containsFilling, bool containsStroking);
/// Returns true, if draw buffer is modified and needs to be flushed
bool isModified() const { return m_modifiedRect.isValid(); }
/// Returns active colors
uint32_t getActiveColors() const { return m_activeColors; }
/// Returns modified rectangle
QRect getModifiedRect() const { return m_modifiedRect; }
bool isContainsFilling() const { return m_containsFilling; }
bool isContainsStroking() const { return m_containsStroking; }
private:
uint32_t m_activeColors = 0;
bool m_containsFilling = false;
bool m_containsStroking = false;
QRect m_modifiedRect;
};
@ -451,6 +464,7 @@ private:
struct PDFTransparencyPainterState
{
QPainterPath clipPath; ///< Clipping path in device state coordinates
PDFFloatBitmap softMask;
};
struct PDFMappedColor
@ -473,6 +487,9 @@ private:
PDFFloatBitmapWithColorSpace* getInitialBackdrop();
PDFFloatBitmapWithColorSpace* getImmediateBackdrop();
PDFFloatBitmapWithColorSpace* getBackdrop();
const PDFFloatBitmapWithColorSpace* getInitialBackdrop() const;
const PDFFloatBitmapWithColorSpace* getImmediateBackdrop() const;
const PDFFloatBitmapWithColorSpace* getBackdrop() const;
const PDFColorSpacePointer& getBlendColorSpace() const;
PDFTransparencyPainterState* getPainterState() { return &m_painterStateStack.top(); }
@ -492,7 +509,7 @@ private:
/// Returns fill area from fill rectangle
/// \param fillRect Fill rectangle
QRect getActualFillRect(QRectF& fillRect) const;
QRect getActualFillRect(const QRectF& fillRect) const;
/// Flushes draw buffer
void flushDrawBuffer();