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Tiling patterns (first part)

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Jakub Melka
2019-09-25 19:17:52 +02:00
parent d87995f8b8
commit 40f3f9f9b4
4 changed files with 195 additions and 13 deletions
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48
PdfForQtLib/sources/pdfpattern.h
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@ -29,6 +29,7 @@
namespace pdf
{
class PDFPattern;
class PDFTilingPattern;
class PDFShadingPattern;
using PDFPatternPtr = std::shared_ptr<PDFPattern>;
@ -193,6 +194,7 @@ public:
virtual PatternType getType() const = 0;
virtual const PDFShadingPattern* getShadingPattern() const = 0;
virtual const PDFTilingPattern* getTilingPattern() const = 0;
/// Returns bounding box in the shadings target coordinate system (not in
/// pattern coordinate system).
@ -233,7 +235,50 @@ public:
explicit PDFInvalidPattern() = default;
virtual PatternType getType() const { return PatternType::Invalid; }
virtual const PDFShadingPattern* getShadingPattern() const { return nullptr; }
virtual const PDFShadingPattern* getShadingPattern() const override { return nullptr; }
virtual const PDFTilingPattern* getTilingPattern() const override { return nullptr; }
};
class PDFTilingPattern : public PDFPattern
{
public:
explicit PDFTilingPattern() = default;
virtual PatternType getType() const override { return PatternType::Tiling; }
virtual const PDFShadingPattern* getShadingPattern() const override { return nullptr; }
virtual const PDFTilingPattern* getTilingPattern() const override { return this; }
enum class PaintType
{
Colored,
Uncolored,
Invalid
};
enum class TilingType
{
ConstantSpacing,
NoDistortion,
ConstantSpacingAndFasterTiling,
Invalid
};
PaintType getPaintingType() const { return m_paintType; }
TilingType getTilingType() const { return m_tilingType; }
PDFReal getXStep() const { return m_xStep; }
PDFReal getYStep() const { return m_yStep; }
const PDFObject& getResources() const { return m_resources; }
const QByteArray& getContent() const { return m_content; }
private:
friend class PDFPattern;
PaintType m_paintType = PaintType::Colored;
TilingType m_tilingType = TilingType::ConstantSpacing;
PDFReal m_xStep = 0.0;
PDFReal m_yStep = 0.0;
PDFObject m_resources;
QByteArray m_content;
};
/// Shading pattern - smooth color distribution along the pattern's space
@ -245,6 +290,7 @@ public:
virtual PatternType getType() const override;
virtual ShadingType getShadingType() const = 0;
virtual const PDFShadingPattern* getShadingPattern() const override { return this; }
virtual const PDFTilingPattern* getTilingPattern() const override { return nullptr; }
/// Creates a colored mesh using settings. Mesh is generated in device space
/// coordinate system. You must transform the mesh, if you want to