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pdfio/pdfio-content.h

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2021-05-19 01:08:50 +02:00
//
Rename as PDFio for consistency. Add PDFio logo image. Move documentation to "doc" subdirectory.
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// Public content header file for PDFio.
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//
// Copyright © 2021 by Michael R Sweet.
//
// Licensed under Apache License v2.0. See the file "LICENSE" for more
// information.
//
#ifndef PDFIO_CONTENT_H
# define PDFIO_CONTENT_H
//
// Include necessary headers...
//
# include "pdfio.h"
//
// C++ magic...
//
# ifdef __cplusplus
extern "C" {
# endif // __cplusplus
//
// Types and constants...
//
typedef enum pdfio_linecap_e // Line capping modes
{
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PDFIO_LINECAP_BUTT, // Butt ends
PDFIO_LINECAP_ROUND, // Round ends
PDFIO_LINECAP_SQUARE // Square ends
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} pdfio_linecap_t;
typedef enum pdfio_linejoin_e // Line joining modes
{
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PDFIO_LINEJOIN_MITER, // Miter joint
PDFIO_LINEJOIN_ROUND, // Round joint
PDFIO_LINEJOIN_BEVEL // Bevel joint
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} pdfio_linejoin_t;
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typedef double pdfio_matrix_t[3][2]; // Transform matrix
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typedef enum pdfio_textrendering_e // Text rendering modes
{
PDFIO_TEXTRENDERING_FILL, // Fill text
PDFIO_TEXTRENDERING_STROKE, // Stroke text
PDFIO_TEXTRENDERING_FILL_AND_STROKE, // Fill then stroke text
PDFIO_TEXTRENDERING_INVISIBLE, // Don't fill or stroke (invisible)
PDFIO_TEXTRENDERING_FILL_PATH, // Fill text and add to path
PDFIO_TEXTRENDERING_STROKE_PATH, // Stroke text and add to path
PDFIO_TEXTRENDERING_FILL_AND_STROKE_PATH,
// Fill then stroke text and add to path
PDFIO_TEXTRENDERING_TEXT_PATH // Add text to path (invisible)
} pdfio_textrendering_t;
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extern const double pdfioAdobeRGBGamma _PDFIO_PUBLIC;
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// AdobeRGB gamma
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extern const double pdfioAdobeRGBMatrix[3][3] _PDFIO_PUBLIC;
Implement calibrated color support, including constants for a few standard color spaces and a new color patch test page. The grayscale test image from CUPS wasn't actually grayscale.
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// AdobeRGB matrix
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extern const double pdfioAdobeRGBWhitePoint[3] _PDFIO_PUBLIC;
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// AdobeRGB white point
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extern const double pdfioDisplayP3Gamma _PDFIO_PUBLIC;
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// Display P3 gamma
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extern const double pdfioDisplayP3Matrix[3][3] _PDFIO_PUBLIC;
Implement calibrated color support, including constants for a few standard color spaces and a new color patch test page. The grayscale test image from CUPS wasn't actually grayscale.
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// Display P3 matrix
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extern const double pdfioDisplayP3WhitePoint[3] _PDFIO_PUBLIC;
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// Display P3 white point
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extern const double pdfioSRGBGamma _PDFIO_PUBLIC;
Implement calibrated color support, including constants for a few standard color spaces and a new color patch test page. The grayscale test image from CUPS wasn't actually grayscale.
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// sRGB gamma
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extern const double pdfioSRGBMatrix[3][3] _PDFIO_PUBLIC;
Implement calibrated color support, including constants for a few standard color spaces and a new color patch test page. The grayscale test image from CUPS wasn't actually grayscale.
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// sRGB matrix
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extern const double pdfioSRGBWhitePoint[3] _PDFIO_PUBLIC;
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// sRGB white point
//
// Functions...
//
Rework the color space support. Start work on PNG file reader.
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// Color array functions...
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extern pdfio_array_t *pdfioArrayCreateColorFromICCObj(pdfio_file_t *pdf, pdfio_obj_t *icc_object) _PDFIO_PUBLIC;
extern pdfio_array_t *pdfioArrayCreateColorFromMatrix(pdfio_file_t *pdf, size_t num_colors, double gamma, const double matrix[3][3], const double white_point[3]) _PDFIO_PUBLIC;
extern pdfio_array_t *pdfioArrayCreateColorFromPalette(pdfio_file_t *pdf, size_t num_colors, const unsigned char *colors) _PDFIO_PUBLIC;
extern pdfio_array_t *pdfioArrayCreateColorFromPrimaries(pdfio_file_t *pdf, size_t num_colors, double gamma, double wx, double wy, double rx, double ry, double gx, double gy, double bx, double by) _PDFIO_PUBLIC;
Rework the color space support. Start work on PNG file reader.
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// PDF content drawing functions...
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extern bool pdfioContentClip(pdfio_stream_t *st, bool even_odd) _PDFIO_PUBLIC;
extern bool pdfioContentDrawImage(pdfio_stream_t *st, const char *name, double x, double y, double w, double h) _PDFIO_PUBLIC;
extern bool pdfioContentFill(pdfio_stream_t *st, bool even_odd) _PDFIO_PUBLIC;
extern bool pdfioContentFillAndStroke(pdfio_stream_t *st, bool even_odd) _PDFIO_PUBLIC;
extern bool pdfioContentMatrixConcat(pdfio_stream_t *st, pdfio_matrix_t m) _PDFIO_PUBLIC;
extern bool pdfioContentMatrixRotate(pdfio_stream_t *st, double degrees) _PDFIO_PUBLIC;
extern bool pdfioContentMatrixScale(pdfio_stream_t *st, double sx, double sy) _PDFIO_PUBLIC;
extern bool pdfioContentMatrixTranslate(pdfio_stream_t *st, double tx, double ty) _PDFIO_PUBLIC;
extern bool pdfioContentPathClose(pdfio_stream_t *st) _PDFIO_PUBLIC;
extern bool pdfioContentPathCurve(pdfio_stream_t *st, double x1, double y1, double x2, double y2, double x3, double y3) _PDFIO_PUBLIC;
extern bool pdfioContentPathCurve13(pdfio_stream_t *st, double x1, double y1, double x3, double y3) _PDFIO_PUBLIC;
extern bool pdfioContentPathCurve23(pdfio_stream_t *st, double x2, double y2, double x3, double y3) _PDFIO_PUBLIC;
extern bool pdfioContentPathLineTo(pdfio_stream_t *st, double x, double y) _PDFIO_PUBLIC;
extern bool pdfioContentPathMoveTo(pdfio_stream_t *st, double x, double y) _PDFIO_PUBLIC;
extern bool pdfioContentPathRect(pdfio_stream_t *st, double x, double y, double width, double height) _PDFIO_PUBLIC;
extern bool pdfioContentRestore(pdfio_stream_t *st) _PDFIO_PUBLIC;
extern bool pdfioContentSave(pdfio_stream_t *st) _PDFIO_PUBLIC;
extern bool pdfioContentSetDashPattern(pdfio_stream_t *st, int phase, int on, int off) _PDFIO_PUBLIC;
extern bool pdfioContentSetFillColorDeviceCMYK(pdfio_stream_t *st, double c, double m, double y, double k) _PDFIO_PUBLIC;
extern bool pdfioContentSetFillColorDeviceGray(pdfio_stream_t *st, double g) _PDFIO_PUBLIC;
extern bool pdfioContentSetFillColorDeviceRGB(pdfio_stream_t *st, double r, double g, double b) _PDFIO_PUBLIC;
extern bool pdfioContentSetFillColorGray(pdfio_stream_t *st, double g) _PDFIO_PUBLIC;
extern bool pdfioContentSetFillColorRGB(pdfio_stream_t *st, double r, double g, double b) _PDFIO_PUBLIC;
extern bool pdfioContentSetFillColorSpace(pdfio_stream_t *st, const char *name) _PDFIO_PUBLIC;
extern bool pdfioContentSetFlatness(pdfio_stream_t *st, double f) _PDFIO_PUBLIC;
extern bool pdfioContentSetLineCap(pdfio_stream_t *st, pdfio_linecap_t lc) _PDFIO_PUBLIC;
extern bool pdfioContentSetLineJoin(pdfio_stream_t *st, pdfio_linejoin_t lj) _PDFIO_PUBLIC;
extern bool pdfioContentSetLineWidth(pdfio_stream_t *st, double width) _PDFIO_PUBLIC;
extern bool pdfioContentSetMiterLimit(pdfio_stream_t *st, double limit) _PDFIO_PUBLIC;
extern bool pdfioContentSetStrokeColorDeviceCMYK(pdfio_stream_t *st, double c, double m, double y, double k) _PDFIO_PUBLIC;
extern bool pdfioContentSetStrokeColorDeviceGray(pdfio_stream_t *st, double g) _PDFIO_PUBLIC;
extern bool pdfioContentSetStrokeColorDeviceRGB(pdfio_stream_t *st, double r, double g, double b) _PDFIO_PUBLIC;
extern bool pdfioContentSetStrokeColorGray(pdfio_stream_t *st, double g) _PDFIO_PUBLIC;
extern bool pdfioContentSetStrokeColorRGB(pdfio_stream_t *st, double r, double g, double b) _PDFIO_PUBLIC;
extern bool pdfioContentSetStrokeColorSpace(pdfio_stream_t *st, const char *name) _PDFIO_PUBLIC;
extern bool pdfioContentSetTextCharacterSpacing(pdfio_stream_t *st, double spacing) _PDFIO_PUBLIC;
extern bool pdfioContentSetTextFont(pdfio_stream_t *st, const char *name, double size) _PDFIO_PUBLIC;
extern bool pdfioContentSetTextLeading(pdfio_stream_t *st, double leading) _PDFIO_PUBLIC;
extern bool pdfioContentSetTextMatrix(pdfio_stream_t *st, pdfio_matrix_t m) _PDFIO_PUBLIC;
extern bool pdfioContentSetTextRenderingMode(pdfio_stream_t *st, pdfio_textrendering_t mode) _PDFIO_PUBLIC;
extern bool pdfioContentSetTextRise(pdfio_stream_t *st, double rise) _PDFIO_PUBLIC;
extern bool pdfioContentSetTextWordSpacing(pdfio_stream_t *st, double spacing) _PDFIO_PUBLIC;
extern bool pdfioContentSetTextXScaling(pdfio_stream_t *st, double percent) _PDFIO_PUBLIC;
extern bool pdfioContentStroke(pdfio_stream_t *st) _PDFIO_PUBLIC;
extern bool pdfioContentTextBegin(pdfio_stream_t *st) _PDFIO_PUBLIC;
extern bool pdfioContentTextEnd(pdfio_stream_t *st) _PDFIO_PUBLIC;
extern bool pdfioContentTextMoveLine(pdfio_stream_t *st, double tx, double ty) _PDFIO_PUBLIC;
extern bool pdfioContentTextMoveTo(pdfio_stream_t *st, double tx, double ty) _PDFIO_PUBLIC;
extern bool pdfioContentTextNextLine(pdfio_stream_t *st) _PDFIO_PUBLIC;
extern bool pdfioContentTextShow(pdfio_stream_t *st, bool unicode, const char *s) _PDFIO_PUBLIC;
extern bool pdfioContentTextShowf(pdfio_stream_t *st, bool unicode, const char *format, ...) _PDFIO_PUBLIC _PDFIO_FORMAT(3,4);
extern bool pdfioContentTextShowJustified(pdfio_stream_t *st, bool unicode, size_t num_fragments, const double *offsets, const char * const *fragments) _PDFIO_PUBLIC;
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Fix xref table - wrong total number of objects. Update pdfioContentDrawImage to take x/y offsets and sizes.
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// Resource helpers...
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extern pdfio_obj_t *pdfioFileCreateFontObjFromBase(pdfio_file_t *pdf, const char *name) _PDFIO_PUBLIC;
extern pdfio_obj_t *pdfioFileCreateFontObjFromFile(pdfio_file_t *pdf, const char *filename, bool unicode) _PDFIO_PUBLIC;
extern pdfio_obj_t *pdfioFileCreateICCObjFromFile(pdfio_file_t *pdf, const char *filename, size_t num_colors) _PDFIO_PUBLIC;
extern pdfio_obj_t *pdfioFileCreateImageObjFromData(pdfio_file_t *pdf, const unsigned char *data, size_t width, size_t height, size_t num_colors, pdfio_array_t *color_data, bool alpha, bool interpolate) _PDFIO_PUBLIC;
extern pdfio_obj_t *pdfioFileCreateImageObjFromFile(pdfio_file_t *pdf, const char *filename, bool interpolate) _PDFIO_PUBLIC;
Fix xref table - wrong total number of objects. Update pdfioContentDrawImage to take x/y offsets and sizes.
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// Image object helpers...
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extern size_t pdfioImageGetBytesPerLine(pdfio_obj_t *obj) _PDFIO_PUBLIC;
extern double pdfioImageGetHeight(pdfio_obj_t *obj) _PDFIO_PUBLIC;
extern double pdfioImageGetWidth(pdfio_obj_t *obj) _PDFIO_PUBLIC;
Fix xref table - wrong total number of objects. Update pdfioContentDrawImage to take x/y offsets and sizes.
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// Page dictionary helpers...
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extern bool pdfioPageDictAddColorSpace(pdfio_dict_t *dict, const char *name, pdfio_array_t *data) _PDFIO_PUBLIC;
extern bool pdfioPageDictAddFont(pdfio_dict_t *dict, const char *name, pdfio_obj_t *obj) _PDFIO_PUBLIC;
extern bool pdfioPageDictAddImage(pdfio_dict_t *dict, const char *name, pdfio_obj_t *obj) _PDFIO_PUBLIC;
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//
// C++ magic...
//
# ifdef __cplusplus
}
# endif // __cplusplus
#endif // !PDFIO_CONTENT_H
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