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pdfio/pdfio-content.h
Michael R Sweet 94cb915885
Fix xref table - wrong total number of objects. 
Update pdfioContentDrawImage to take x/y offsets and sizes.
2021-05-28 22:05:44 -04:00

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//
// Public content header file for pdfio.
//
// 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
{
PDFIO_LINECAP_BUTT, // Butt ends
PDFIO_LINECAP_ROUND, // Round ends
PDFIO_LINECAP_SQUARE // Square ends
} pdfio_linecap_t;
typedef enum pdfio_linejoin_e // Line joining modes
{
PDFIO_LINEJOIN_MITER, // Miter joint
PDFIO_LINEJOIN_ROUND, // Round joint
PDFIO_LINEJOIN_BEVEL // Bevel joint
} pdfio_linejoin_t;
typedef float pdfio_matrix_t[3][2]; // Transform matrix
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;
extern const float pdfioAdobeRGBGamma;
// AdobeRGB gamma
extern const float pdfioAdobeRGBWhitePoint[];
// AdobeRGB white point
extern const float pdfioDisplayP3Gamma;
// Display P3 gamma
extern const float pdfioDisplayP3WhitePoint[];
// Display P3 white point
extern const float pdfioSRGBGamma; // sRGB gamma
extern const float pdfioSRGBWhitePoint[];
// sRGB white point
//
// Functions...
//
// PDF content drawing functions...
extern bool pdfioContentBeginText(pdfio_stream_t *st) PDFIO_PUBLIC;
extern bool pdfioContentClip(pdfio_stream_t *st, bool even_odd) PDFIO_PUBLIC;
extern bool pdfioContentDrawImage(pdfio_stream_t *st, const char *name, float x, float y, float w, float h) PDFIO_PUBLIC;
extern bool pdfioContentEndText(pdfio_stream_t *st) 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, float degrees) PDFIO_PUBLIC;
extern bool pdfioContentMatrixScale(pdfio_stream_t *st, float sx, float sy) PDFIO_PUBLIC;
extern bool pdfioContentMatrixTranslate(pdfio_stream_t *st, float tx, float ty) PDFIO_PUBLIC;
extern bool pdfioContentPathClose(pdfio_stream_t *st) PDFIO_PUBLIC;
extern bool pdfioContentPathCurve(pdfio_stream_t *st, float x1, float y1, float x2, float y2, float x3, float y3) PDFIO_PUBLIC;
extern bool pdfioContentPathCurve13(pdfio_stream_t *st, float x1, float y1, float x3, float y3) PDFIO_PUBLIC;
extern bool pdfioContentPathCurve23(pdfio_stream_t *st, float x2, float y2, float x3, float y3) PDFIO_PUBLIC;
extern bool pdfioContentPathLineTo(pdfio_stream_t *st, float x, float y) PDFIO_PUBLIC;
extern bool pdfioContentPathMoveTo(pdfio_stream_t *st, float x, float y) PDFIO_PUBLIC;
extern bool pdfioContentPathRect(pdfio_stream_t *st, pdfio_rect_t *rect) 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, float c, float m, float y, float k) PDFIO_PUBLIC;
extern bool pdfioContentSetFillColorDeviceGray(pdfio_stream_t *st, float g) PDFIO_PUBLIC;
extern bool pdfioContentSetFillColorDeviceRGB(pdfio_stream_t *st, float r, float g, float b) PDFIO_PUBLIC;
extern bool pdfioContentSetFillColorGray(pdfio_stream_t *st, float g) PDFIO_PUBLIC;
extern bool pdfioContentSetFillColorRGB(pdfio_stream_t *st, float r, float g, float b) PDFIO_PUBLIC;
extern bool pdfioContentSetFillColorSpace(pdfio_stream_t *st, const char *name) PDFIO_PUBLIC;
extern bool pdfioContentSetFlatness(pdfio_stream_t *st, float 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, float width) PDFIO_PUBLIC;
extern bool pdfioContentSetMiterLimit(pdfio_stream_t *st, float limit) PDFIO_PUBLIC;
extern bool pdfioContentSetStrokeColorDeviceCMYK(pdfio_stream_t *st, float c, float m, float y, float k) PDFIO_PUBLIC;
extern bool pdfioContentSetStrokeColorDeviceGray(pdfio_stream_t *st, float g) PDFIO_PUBLIC;
extern bool pdfioContentSetStrokeColorDeviceRGB(pdfio_stream_t *st, float r, float g, float b) PDFIO_PUBLIC;
extern bool pdfioContentSetStrokeColorGray(pdfio_stream_t *st, float g) PDFIO_PUBLIC;
extern bool pdfioContentSetStrokeColorRGB(pdfio_stream_t *st, float r, float g, float b) PDFIO_PUBLIC;
extern bool pdfioContentSetStrokeColorSpace(pdfio_stream_t *st, const char *name) PDFIO_PUBLIC;
extern bool pdfioContentSetTextCharacterSpacing(pdfio_stream_t *st, float spacing) PDFIO_PUBLIC;
extern bool pdfioContentSetTextFont(pdfio_stream_t *st, const char *name, float size) PDFIO_PUBLIC;
extern bool pdfioContentSetTextLeading(pdfio_stream_t *st, float 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, float rise) PDFIO_PUBLIC;
extern bool pdfioContentSetTextWordSpacing(pdfio_stream_t *st, float spacing) PDFIO_PUBLIC;
extern bool pdfioContentSetTextXScaling(pdfio_stream_t *st, float percent) PDFIO_PUBLIC;
extern bool pdfioContentStroke(pdfio_stream_t *st) PDFIO_PUBLIC;
extern bool pdfioContentTextMoveLine(pdfio_stream_t *st, float tx, float ty) PDFIO_PUBLIC;
extern bool pdfioContentTextMoveTo(pdfio_stream_t *st, float tx, float ty) PDFIO_PUBLIC;
extern bool pdfioContentTextNextLine(pdfio_stream_t *st) PDFIO_PUBLIC;
extern bool pdfioContentTextShow(pdfio_stream_t *st, const char *s, bool new_line) PDFIO_PUBLIC;
extern bool pdfioContentTextShowJustified(pdfio_stream_t *st, size_t num_fragments, const float *offsets, const char * const *fragments) PDFIO_PUBLIC;
// Resource helpers...
extern pdfio_obj_t *pdfioFileCreateFontObject(pdfio_file_t *pdf, const char *filename) PDFIO_PUBLIC;
extern pdfio_obj_t *pdfioFileCreateICCProfileObject(pdfio_file_t *pdf, const char *filename) PDFIO_PUBLIC;
extern pdfio_obj_t *pdfioFileCreateImageObject(pdfio_file_t *pdf, const char *filename, bool interpolate) PDFIO_PUBLIC;
// Image object helpers...
extern float pdfioImageGetHeight(pdfio_obj_t *obj) PDFIO_PUBLIC;
extern float pdfioImageGetWidth(pdfio_obj_t *obj) PDFIO_PUBLIC;
// Page dictionary helpers...
extern bool pdfioPageDictAddICCColorSpace(pdfio_dict_t *dict, const char *name, pdfio_obj_t *obj) PDFIO_PUBLIC;
extern bool pdfioPageDictAddCalibratedColorSpace(pdfio_dict_t *dict, const char *name, size_t num_colors, const float *white_point, float gamma) 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;
//
// C++ magic...
//
# ifdef __cplusplus
}
# endif // __cplusplus
#endif // !PDFIO_CONTENT_H
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