fenix/PDF4QT
1
0
Fork 0
mirror of https://github.com/JakubMelka/PDF4QT.git synced 2025-06-05 21:59:17 +02:00
Code Issues Packages Projects Releases Wiki Activity

Spot color mapping

Browse Source
This commit is contained in:
Jakub Melka
2021-01-28 19:40:13 +01:00
parent 8c210176b8
commit 1a13aa4e22
4 changed files with 148 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
Pdf4QtLib/sources/pdftransparencyrenderer.h
View File

@ -21,6 +21,7 @@
#include "pdfglobal.h"
#include "pdfcolorspaces.h"
#include "pdfpagecontentprocessor.h"
#include "pdfconstants.h"
namespace pdf
{
@ -235,6 +236,38 @@ private:
PDFColorSpacePointer m_colorSpace;
};
/// Ink mapper for mapping device inks (device colors) and spot inks (spot colors).
class PDFInkMapper
{
public:
explicit PDFInkMapper(const PDFDocument* document);
struct SpotColorInfo
{
QByteArray name;
uint32_t index = 0; ///< Index into DeviceN color space (index of colorant)
PDFColorSpacePointer colorSpace;
bool active = false; ///< Is spot color active?
};
static constexpr const uint32_t MAX_COLOR_COMPONENTS = PDF_MAX_COLOR_COMPONENTS;
static constexpr const uint32_t MAX_DEVICE_COLOR_COMPONENTS = 4;
static constexpr const uint32_t MAX_SPOT_COLOR_COMPONENTS = MAX_COLOR_COMPONENTS - MAX_DEVICE_COLOR_COMPONENTS - 2;
/// Scan document for spot colors and fills color info
/// \param activate Set spot colors active?
void createSpotColors(bool activate);
/// Returns true, if mapper contains given spot color
/// \param colorName Color name
bool containsSpotColor(const QByteArray& colorName) const;
private:
const PDFDocument* m_document;
std::vector<SpotColorInfo> m_spotColors;
};
/// Renders PDF pages with transparency, using 32-bit floating point precision.
/// Both device color space and blending color space can be defined. It implements
/// page blending space and device blending space. So, painted graphics is being