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Operator list
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Jakub Melka
@ -19,6 +19,7 @@
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#define PDFRENDERER_H
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#include "pdfpage.h"
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#include "pdfparser.h"
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#include "pdfcolorspaces.h"
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#include <QMatrix>
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@ -83,6 +84,114 @@ class PDFPageContentProcessor
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public:
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explicit PDFPageContentProcessor(const PDFPage* page, const PDFDocument* document);
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enum class Operator
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{
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// General graphic state w, J, j, M, d, ri, i, gs
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SetLineWidth, ///< w, sets the line width
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SetLineCap, ///< J, sets the line cap
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SetLineJoin, ///< j, sets the line join
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SetMitterLimit, ///< M, sets the mitter limit
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SetLineDashPattern, ///< d, sets the line dash pattern
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SetRenderingIntent, ///< ri, sets the rendering intent
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SetFlatness, ///< i, sets the flattness (number in range from 0 to 100)
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SetGraphicState, ///< gs, sets the whole graphic state (stored in resource dictionary)
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// Special graphic state: q, Q, cm
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SaveGraphicState, ///< q, saves the graphic state
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RestoreGraphicState, ///< Q, restores the graphic state
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AdjustCurrentTransformationMatrix, ///< cm, modify the current transformation matrix by matrix multiplication
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// Path construction: m, l, c, v, y, h, re
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MoveCurrentPoint, ///< m, begin a new subpath by moving to the desired point
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LineTo, ///< l, appends a straight line segment to the subpath
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Bezier123To, ///< c, appends a Bézier curve with control points 1, 2, 3
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Bezier23To, ///< v, appends a Bézier curve with control points 2, 3
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Bezier13To, ///< y, appends a Bézier curve with control points 1, 3
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EndSubpath, ///< h, ends current subpath by adding straight line segment from the last point to the beginning
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// Path painting: S, s, f, F, f*, B, B*, b, b*, n
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StrokePath, ///< S, stroke the path
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CloseAndStrokePath, ///< s, close the path and then stroke (equivalent of operators h S)
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FillPathWinding, ///< f, close the path, and then fill the path using "Non zero winding number rule"
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FillPathWinding2, ///< F, same as previous, see PDF Reference 1.7, Table 4.10
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FillPathEvenOdd, ///< f*, fill the path using "Even-odd rule"
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StrokeAndFillWinding, ///< B, stroke and fill path, using "Non zero winding number rule"
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StrokeAndFillEvenOdd, ///< B*, stroke and fill path, using "Even-odd rule"
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CloseAndStrokeAndFillWinding, ///< b, close, stroke and fill path, using "Non zero winding number rule", equivalent of operators h B
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CloseAndStrokeAndFillEvenOdd, ///< b*, close, stroke and fill path, using "Even-odd rule", equivalent of operators h B*
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ClearPath, ///< n, clear parh (close current) path, "no-operation", used with clipping
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// Clipping paths: W, W*
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ClipWinding, ///< W, modify current clipping path by intersecting it with current path using "Non zero winding number rule"
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ClipEvenOdd, ///< W*, modify current clipping path by intersecting it with current path using "Even-odd rule"
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// Text object: BT, ET
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TextBegin, ///< BT, begin text object, initialize text matrices, cannot be nested
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TextEnd, ///< ET, end text object, cannot be nested
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// Text state: Tc, Tw, Tz, TL, Tf, Tr, Ts
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TextSetCharacterSpacing, ///< Tc, set text character spacing
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TextSetWordSpacing, ///< Tw, set text word spacing
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TextSetHorizontalScale, ///< Tz, set text horizontal scaling (in percents, 100% = normal scaling)
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TextSetLeading, ///< TL, set text leading
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TextSetFontAndFontSize, ///< Tf, set text font (name from dictionary) and its size
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TextSetRenderMode, ///< Tr, set text render mode
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TextSetRise, ///< Ts, set text rise
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// Text positioning: Td, TD, Tm, T*
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TextMoveByOffset, ///< Td, move by offset
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TextSetLeadingAndMoveByOffset, ///< TD, sets thext leading and moves by offset, x y TD is equivalent to sequence -y TL x y Td
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TextSetMatrix, ///< Tm, set text matrix
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TextMoveByLeading, ///< T*, moves text by leading, equivalent to 0 leading Td
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// Text showing: Tj, TJ, ', "
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TextShowTextString, ///< Tj, show text string
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TextShowTextIndividualSpacing, ///< TJ, show text, allow individual text spacing
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TextNextLineShowText, ///< ', move to the next line and show text ("string '" is equivalent to "T* string Tj")
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TextSetSpacingAndShowText, ///< ", move to the next line, set spacing and show text (equivalent to sequence "w1 Tw w2 Tc string '")
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// Type 3 font: d0, d1
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Type3FontSetOffset, ///< d0, set width information, see PDF 1.7 Reference, Table 5.10
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Type3FontSetOffsetAndBB, ///< d1, set offset and glyph bounding box
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// Color: CS, cs, SC, SCN, sc, scn, G, g, RG, rg, K, k
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ColorSetStrokingColorSpace, ///< CS, set current color space for stroking operations
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ColorSetFillingColorSpace, ///< cs, set current color space for filling operations
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ColorSetStrokingColor, ///< SC, set current stroking color
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ColorSetStrokingColorN, ///< SCN, same as SC, but also supports Pattern, Separtion, DeviceN and ICCBased color spaces
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ColorSetFillingColor, ///< sc, set current filling color
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ColorSetFillingColorN, ///< scn, same as sc, but also supports Pattern, Separtion, DeviceN and ICCBased color spaces
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ColorSetDeviceGrayStroking, ///< G, set DeviceGray color space for stroking color and set color
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ColorSetDeviceGrayFilling, ///< g, set DeviceGray color space for filling color and set color
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ColorSetDeviceRGBStroking, ///< RG, set DeviceRGB color space for stroking color and set color
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ColorSetDeviceRGBFilling, ///< rg, set DeviceRGB color space for filling color and set color
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ColorSetDeviceCMYKStroking, ///< K, set DeviceCMYK color space for stroking color and set color
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ColorSetDeviceCMYKFilling, ///< k, set DeviceCMYK color space for filling color and set color
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// Shading pattern: sh
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ShadingPaintShape, ///< sh, paint shape
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// Inline images: BI, ID, EI
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InlineImageBegin, ///< BI, begin inline image
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InlineImageData, ///< ID, inline image data
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InlineImageEnd, ///< EI, end of inline image
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// XObject: Do
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PaintXObject, ///< Do, paint the X Object (image, form, ...)
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// Marked content: MP, DP, BMC, BDC, EMC
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MarkedContentPoint, ///< MP, marked content point
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MarkedContentPointWithProperties, ///< DP, marked content point with properties
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MarkedContentBegin, ///< BMC, begin of sequence of marked content
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MarkedContentBeginWithProperties, ///< BDC, begin of sequence of marked content with properties
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MarkedContentEnd, ///< EMC, end of marked content sequence
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// Compatibility: BX, EX
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CompatibilityBegin, ///< BX, Compatibility mode begin (unrecognized operators are ignored)
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CompatibilityEnd, ///< EX, Compatibility mode end
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Invalid ///< Invalid operator, use for error reporting
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};
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/// Process the contents of the page
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QList<PDFRenderError> processContents();
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@ -118,6 +227,9 @@ private:
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const PDFPage* m_page;
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const PDFDocument* m_document;
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/// Array with current operand arguments
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PDFFlatArray<PDFLexicalAnalyzer::Token, 33> m_operands;
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/// Stack with current graphic states
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std::stack<PDFPageContentProcessorState> m_stack;
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};
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