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Text operators (first part)

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Jakub Melka
2019-03-25 18:44:45 +01:00
parent 8c417b2afb
commit 21e125bd40
9 changed files with 5198 additions and 20 deletions
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110
PdfForQtLib/sources/pdfpagecontentprocessor.h
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@ -21,6 +21,7 @@
#include "pdfrenderer.h"
#include "pdfparser.h"
#include "pdfcolorspaces.h"
#include "pdffont.h"
#include <QMatrix>
#include <QPainterPath>
@ -113,7 +114,7 @@ public:
// Text positioning: Td, TD, Tm, T*
TextMoveByOffset, ///< Td, move by offset
TextSetLeadingAndMoveByOffset, ///< TD, sets thext leading and moves by offset, x y TD is equivalent to sequence -y TL x y Td
TextSetLeadingAndMoveByOffset, ///< TD, sets text leading and moves by offset, x y TD is equivalent to sequence -y TL x y Td
TextSetMatrix, ///< Tm, set text matrix
TextMoveByLeading, ///< T*, moves text by leading, equivalent to 0 leading Td
@ -214,20 +215,31 @@ protected:
enum StateFlag
{
StateUnchanged = 0x0000,
StateCurrentTransformationMatrix = 0x0001,
StateStrokeColorSpace = 0x0002,
StateFillColorSpace = 0x0004,
StateStrokeColor = 0x0008,
StateFillColor = 0x0010,
StateLineWidth = 0x0020,
StateLineCapStyle = 0x0040,
StateLineJoinStyle = 0x0080,
StateMitterLimit = 0x0100,
StateLineDashPattern = 0x0200,
StateRenderingIntent = 0x0400,
StateFlatness = 0x0800,
StateSmoothness = 0x1000,
StateUnchanged = 0x00000000,
StateCurrentTransformationMatrix = 0x00000001,
StateStrokeColorSpace = 0x00000002,
StateFillColorSpace = 0x00000004,
StateStrokeColor = 0x00000008,
StateFillColor = 0x00000010,
StateLineWidth = 0x00000020,
StateLineCapStyle = 0x00000040,
StateLineJoinStyle = 0x00000080,
StateMitterLimit = 0x00000100,
StateLineDashPattern = 0x00000200,
StateRenderingIntent = 0x00000400,
StateFlatness = 0x00000800,
StateSmoothness = 0x00001000,
StateTextMatrix = 0x00002000,
StateTextLineMatrix = 0x00004000,
StateTextCharacterSpacing = 0x00008000,
StateTextWordSpacing = 0x00010000,
StateTextHorizontalScaling = 0x00020000,
StateTextLeading = 0x00040000,
StateTextFont = 0x00080000,
StateTextFontSize = 0x00100000,
StateTextRenderingMode = 0x00200000,
StateTextRise = 0x00400000,
StateTextKnockout = 0x00800000,
StateAll = 0xFFFF
};
@ -258,7 +270,7 @@ protected:
void setLineJoinStyle(Qt::PenJoinStyle lineJoinStyle);
PDFReal getMitterLimit() const { return m_mitterLimit; }
void setMitterLimit(const PDFReal& mitterLimit);
void setMitterLimit(PDFReal mitterLimit);
const PDFLineDashPattern& getLineDashPattern() const { return m_lineDashPattern; }
void setLineDashPattern(PDFLineDashPattern pattern);
@ -275,6 +287,39 @@ protected:
StateFlags getStateFlags() const { return m_stateFlags; }
void setStateFlags(StateFlags stateFlags) { m_stateFlags = stateFlags; }
PDFReal getTextCharacterSpacing() const { return m_textCharacterSpacing; }
void setTextCharacterSpacing(PDFReal textCharacterSpacing);
PDFReal getTextWordSpacing() const { return m_textWordSpacing; }
void setTextWordSpacing(PDFReal textWordSpacing);
PDFReal getTextHorizontalScaling() const { return m_textHorizontalScaling; }
void setTextHorizontalScaling(PDFReal textHorizontalScaling);
PDFReal getTextLeading() const { return m_textLeading; }
void setTextLeading(PDFReal textLeading);
const PDFFontPointer& getTextFont() const { return m_textFont; }
void setTextFont(const PDFFontPointer& textFont);
PDFReal getTextFontSize() const { return m_textFontSize; }
void setTextFontSize(PDFReal textFontSize);
TextRenderingMode getTextRenderingMode() const { return m_textRenderingMode; }
void setTextRenderingMode(TextRenderingMode textRenderingMode);
PDFReal getTextRise() const { return m_textRise; }
void setTextRise(PDFReal textRise);
bool getTextKnockout() const { return m_textKnockout; }
void setTextKnockout(bool textKnockout);
const QMatrix& getTextMatrix() const { return m_textMatrix; }
void setTextMatrix(const QMatrix& textMatrix);
const QMatrix& getTextLineMatrix() const { return m_textLineMatrix; }
void setTextLineMatrix(const QMatrix& textLineMatrix);
private:
QMatrix m_currentTransformationMatrix;
PDFColorSpacePointer m_strokeColorSpace;
@ -289,6 +334,17 @@ protected:
QByteArray m_renderingIntent;
PDFReal m_flatness;
PDFReal m_smoothness;
PDFReal m_textCharacterSpacing; // T_c
PDFReal m_textWordSpacing; // T_w
PDFReal m_textHorizontalScaling; // T_h, percentage
PDFReal m_textLeading; // T_l
PDFFontPointer m_textFont; // Text font
PDFReal m_textFontSize; // T_fs
TextRenderingMode m_textRenderingMode; // Text rendering mode
PDFReal m_textRise; // T_rise
bool m_textKnockout;
QMatrix m_textMatrix;
QMatrix m_textLineMatrix;
StateFlags m_stateFlags;
};
@ -475,6 +531,25 @@ private:
void operatorColorSetDeviceCMYKStroking(PDFReal c, PDFReal m, PDFReal y, PDFReal k); ///< K, set DeviceCMYK color space for stroking color and set color
void operatorColorSetDeviceCMYKFilling(PDFReal c, PDFReal m, PDFReal y, PDFReal k); ///< k, set DeviceCMYK color space for filling color and set color
// Text object: BT, ET
void operatorTextBegin(); ///< BT, begin text object, initialize text matrices, cannot be nested
void operatorTextEnd(); ///< ET, end text object, cannot be nested
// Text state: Tc, Tw, Tz, TL, Tf, Tr, Ts
void operatorTextSetCharacterSpacing(PDFReal charSpacing); ///< Tc, set text character spacing
void operatorTextSetWordSpacing(PDFReal wordSpacing); ///< Tw, set text word spacing
void operatorTextSetHorizontalScale(PDFReal horizontalScaling); ///< Tz, set text horizontal scaling (in percents, 100% = normal scaling)
void operatorTextSetLeading(PDFReal leading); ///< TL, set text leading
void operatorTextSetFontAndFontSize(PDFName fontName, PDFReal fontSize); ///< Tf, set text font (name from dictionary) and its size
void operatorTextSetRenderMode(PDFInteger mode); ///< Tr, set text render mode
void operatorTextSetRise(PDFReal rise); ///< Ts, set text rise
// Text positioning: Td, TD, Tm, T*
void operatorTextMoveByOffset(PDFReal t_x, PDFReal t_y); ///< Td, move by offset
void operatorTextSetLeadingAndMoveByOffset(PDFReal t_x, PDFReal t_y); ///< TD, sets text leading and moves by offset, x y TD is equivalent to sequence -y TL x y Td
void operatorTextSetMatrix(PDFReal a, PDFReal b, PDFReal c, PDFReal d, PDFReal e, PDFReal f); ///< Tm, set text matrix
void operatorTextMoveByLeading(); ///< T*, moves text by leading, equivalent to 0 leading Td
const PDFPage* m_page;
const PDFDocument* m_document;
const PDFDictionary* m_colorSpaceDictionary;
@ -498,6 +573,9 @@ private:
/// Current painter path
QPainterPath m_currentPath;
/// Nesting level of the begin/end of text object
int m_textBeginEndState;
};
} // namespace pdf