/* cairo - a vector graphics library with display and print output * * Copyright © 2002 University of Southern California * Copyright © 2005 Red Hat, Inc. * * This library is free software; you can redistribute it and/or * modify it either under the terms of the GNU Lesser General Public * License version 2.1 as published by the Free Software Foundation * (the "LGPL") or, at your option, under the terms of the Mozilla * Public License Version 1.1 (the "MPL"). If you do not alter this * notice, a recipient may use your version of this file under either * the MPL or the LGPL. * * You should have received a copy of the LGPL along with this library * in the file COPYING-LGPL-2.1; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA * You should have received a copy of the MPL along with this library * in the file COPYING-MPL-1.1 * * The contents of this file are subject to the Mozilla Public License * Version 1.1 (the "License"); you may not use this file except in * compliance with the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY * OF ANY KIND, either express or implied. See the LGPL or the MPL for * the specific language governing rights and limitations. * * The Original Code is the cairo graphics library. * * The Initial Developer of the Original Code is University of Southern * California. * * Contributor(s): * Carl D. Worth */ /* * These definitions are solely for use by the implementation of cairo * and constitute no kind of standard. If you need any of these * functions, please drop me a note. Either the library needs new * functionality, or there's a way to do what you need using the * existing published interfaces. cworth@cworth.org */ #ifndef _CAIROINT_H_ #define _CAIROINT_H_ #if HAVE_CONFIG_H #include "config.h" #endif #ifdef _MSC_VER #define cairo_public __declspec(dllexport) #endif #include #include #include #include #include #ifdef _MSC_VER #define _USE_MATH_DEFINES #endif #include #include #include #include "cairo.h" #include #include "cairo-compiler-private.h" #include "cairo-error-private.h" #if CAIRO_HAS_PDF_SURFACE || \ CAIRO_HAS_PS_SURFACE || \ CAIRO_HAS_SCRIPT_SURFACE || \ CAIRO_HAS_XML_SURFACE #define CAIRO_HAS_DEFLATE_STREAM 1 #endif #if CAIRO_HAS_PS_SURFACE || \ CAIRO_HAS_PDF_SURFACE || \ CAIRO_HAS_SVG_SURFACE || \ CAIRO_HAS_WIN32_SURFACE #define CAIRO_HAS_FONT_SUBSET 1 #endif #if CAIRO_HAS_PS_SURFACE || \ CAIRO_HAS_PDF_SURFACE || \ CAIRO_HAS_FONT_SUBSET #define CAIRO_HAS_PDF_OPERATORS 1 #endif CAIRO_BEGIN_DECLS #if _WIN32 && !_WIN32_WCE /* Permissions on WinCE? No worries! */ cairo_private FILE * _cairo_win32_tmpfile (void); #define tmpfile() _cairo_win32_tmpfile() #endif #undef MIN #define MIN(a, b) ((a) < (b) ? (a) : (b)) #undef MAX #define MAX(a, b) ((a) > (b) ? (a) : (b)) #ifndef FALSE #define FALSE 0 #endif #ifndef TRUE #define TRUE 1 #endif #ifndef M_PI #define M_PI 3.14159265358979323846 #endif #ifndef M_SQRT2 #define M_SQRT2 1.41421356237309504880 #endif #ifndef M_SQRT1_2 #define M_SQRT1_2 0.707106781186547524400844362104849039 #endif #undef ARRAY_LENGTH #define ARRAY_LENGTH(__array) ((int) (sizeof (__array) / sizeof (__array[0]))) #undef STRINGIFY #undef STRINGIFY_ARG #define STRINGIFY(macro_or_string) STRINGIFY_ARG (macro_or_string) #define STRINGIFY_ARG(contents) #contents #if defined (__GNUC__) #define cairo_container_of(ptr, type, member) ({ \ const __typeof__ (((type *) 0)->member) *mptr__ = (ptr); \ (type *) ((char *) mptr__ - offsetof (type, member)); \ }) #else #define cairo_container_of(ptr, type, member) \ ((type *)((char *) (ptr) - (char *) &((type *)0)->member)) #endif #define ASSERT_NOT_REACHED \ do { \ assert (!"reached"); \ } while (0) #define COMPILE_TIME_ASSERT1(condition, line) \ typedef int compile_time_assertion_at_line_##line##_failed [(condition)?1:-1] #define COMPILE_TIME_ASSERT0(condition, line) COMPILE_TIME_ASSERT1(condition, line) #define COMPILE_TIME_ASSERT(condition) COMPILE_TIME_ASSERT0(condition, __LINE__) #define CAIRO_ALPHA_IS_CLEAR(alpha) ((alpha) <= ((double)0x00ff / (double)0xffff)) #define CAIRO_ALPHA_SHORT_IS_CLEAR(alpha) ((alpha) <= 0x00ff) #define CAIRO_ALPHA_IS_OPAQUE(alpha) ((alpha) >= ((double)0xff00 / (double)0xffff)) #define CAIRO_ALPHA_SHORT_IS_OPAQUE(alpha) ((alpha) >= 0xff00) #define CAIRO_ALPHA_IS_ZERO(alpha) ((alpha) <= 0.0) #define CAIRO_COLOR_IS_CLEAR(color) CAIRO_ALPHA_SHORT_IS_CLEAR ((color)->alpha_short) #define CAIRO_COLOR_IS_OPAQUE(color) CAIRO_ALPHA_SHORT_IS_OPAQUE ((color)->alpha_short) /* Reverse the bits in a byte with 7 operations (no 64-bit): * Devised by Sean Anderson, July 13, 2001. * Source: http://graphics.stanford.edu/~seander/bithacks.html#ReverseByteWith32Bits */ #define CAIRO_BITSWAP8(c) ((((c) * 0x0802LU & 0x22110LU) | ((c) * 0x8020LU & 0x88440LU)) * 0x10101LU >> 16) /* Return the number of 1 bits in mask. * * GCC 3.4 supports a "population count" builtin, which on many targets is * implemented with a single instruction. There is a fallback definition * in libgcc in case a target does not have one, which should be just as * good as the open-coded solution below, (which is "HACKMEM 169"). */ static inline int cairo_const _cairo_popcount (uint32_t mask) { #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) return __builtin_popcount (mask); #else register int y; y = (mask >> 1) &033333333333; y = mask - y - ((y >>1) & 033333333333); return (((y + (y >> 3)) & 030707070707) % 077); #endif } static cairo_always_inline cairo_bool_t _cairo_is_little_endian (void) { static const int i = 1; return *((char *) &i) == 0x01; } #ifdef WORDS_BIGENDIAN #define CAIRO_BITSWAP8_IF_LITTLE_ENDIAN(c) (c) #else #define CAIRO_BITSWAP8_IF_LITTLE_ENDIAN(c) CAIRO_BITSWAP8(c) #endif #ifdef WORDS_BIGENDIAN #define cpu_to_be16(v) (v) #define be16_to_cpu(v) (v) #define cpu_to_be32(v) (v) #define be32_to_cpu(v) (v) #else static inline uint16_t cairo_const cpu_to_be16(uint16_t v) { return (v << 8) | (v >> 8); } static inline uint16_t cairo_const be16_to_cpu(uint16_t v) { return cpu_to_be16 (v); } static inline uint32_t cairo_const cpu_to_be32(uint32_t v) { return (v >> 24) | ((v >> 8) & 0xff00) | ((v << 8) & 0xff0000) | (v << 24); } static inline uint32_t cairo_const be32_to_cpu(uint32_t v) { return cpu_to_be32 (v); } #endif /* Unaligned big endian access */ static inline uint16_t get_unaligned_be16 (const unsigned char *p) { return p[0] << 8 | p[1]; } static inline uint32_t get_unaligned_be32 (const unsigned char *p) { return p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3]; } static inline void put_unaligned_be16 (uint16_t v, unsigned char *p) { p[0] = (v >> 8) & 0xff; p[1] = v & 0xff; } static inline void put_unaligned_be32 (uint32_t v, unsigned char *p) { p[0] = (v >> 24) & 0xff; p[1] = (v >> 16) & 0xff; p[2] = (v >> 8) & 0xff; p[3] = v & 0xff; } /* The glibc versions of ispace() and isdigit() are slow in UTF-8 locales. */ static inline int cairo_const _cairo_isspace (int c) { return (c == 0x20 || (c >= 0x09 && c <= 0x0d)); } static inline int cairo_const _cairo_isdigit (int c) { return (c >= '0' && c <= '9'); } #include "cairo-types-private.h" #include "cairo-cache-private.h" #include "cairo-reference-count-private.h" #include "cairo-spans-private.h" #include "cairo-surface-private.h" cairo_private void _cairo_box_from_doubles (cairo_box_t *box, double *x1, double *y1, double *x2, double *y2); cairo_private void _cairo_box_to_doubles (const cairo_box_t *box, double *x1, double *y1, double *x2, double *y2); cairo_private void _cairo_box_from_rectangle (cairo_box_t *box, const cairo_rectangle_int_t *rectangle); cairo_private void _cairo_box_round_to_rectangle (const cairo_box_t *box, cairo_rectangle_int_t *rectangle); cairo_private void _cairo_box_add_curve_to (cairo_box_t *extents, const cairo_point_t *a, const cairo_point_t *b, const cairo_point_t *c, const cairo_point_t *d); cairo_private void _cairo_boxes_get_extents (const cairo_box_t *boxes, int num_boxes, cairo_box_t *extents); cairo_private extern const cairo_rectangle_int_t _cairo_empty_rectangle; cairo_private extern const cairo_rectangle_int_t _cairo_unbounded_rectangle; static inline void _cairo_unbounded_rectangle_init (cairo_rectangle_int_t *rect) { *rect = _cairo_unbounded_rectangle; } cairo_private_no_warn cairo_bool_t _cairo_rectangle_intersect (cairo_rectangle_int_t *dst, const cairo_rectangle_int_t *src); cairo_private_no_warn cairo_bool_t _cairo_rectangle_exact_intersect (cairo_rectangle_t *dst, const cairo_rectangle_t *src); static inline cairo_bool_t _cairo_rectangle_intersects (const cairo_rectangle_int_t *dst, const cairo_rectangle_int_t *src) { return !(src->x >= dst->x + (int) dst->width || src->x + (int) src->width <= dst->x || src->y >= dst->y + (int) dst->height || src->y + (int) src->height <= dst->y); } static inline cairo_bool_t _cairo_rectangle_contains_rectangle (const cairo_rectangle_int_t *a, const cairo_rectangle_int_t *b) { return (a->x <= b->x && a->x + (int) a->width >= b->x + (int) b->width && a->y <= b->y && a->y + (int) a->height >= b->y + (int) b->height); } cairo_private void _cairo_rectangle_int_from_double (cairo_rectangle_int_t *recti, const cairo_rectangle_t *rectf); /* Extends the dst rectangle to also contain src. * If one of the rectangles is empty, the result is undefined */ cairo_private void _cairo_rectangle_union (cairo_rectangle_int_t *dst, const cairo_rectangle_int_t *src); cairo_private cairo_bool_t _cairo_box_intersects_line_segment (const cairo_box_t *box, cairo_line_t *line) cairo_pure; cairo_private cairo_bool_t _cairo_spline_intersects (const cairo_point_t *a, const cairo_point_t *b, const cairo_point_t *c, const cairo_point_t *d, const cairo_box_t *box) cairo_pure; typedef struct { const cairo_user_data_key_t *key; void *user_data; cairo_destroy_func_t destroy; } cairo_user_data_slot_t; cairo_private void _cairo_user_data_array_init (cairo_user_data_array_t *array); cairo_private void _cairo_user_data_array_fini (cairo_user_data_array_t *array); cairo_private void * _cairo_user_data_array_get_data (cairo_user_data_array_t *array, const cairo_user_data_key_t *key); cairo_private cairo_status_t _cairo_user_data_array_set_data (cairo_user_data_array_t *array, const cairo_user_data_key_t *key, void *user_data, cairo_destroy_func_t destroy); cairo_private cairo_status_t _cairo_user_data_array_copy (cairo_user_data_array_t *dst, const cairo_user_data_array_t *src); cairo_private void _cairo_user_data_array_foreach (cairo_user_data_array_t *array, void (*func) (const void *key, void *elt, void *closure), void *closure); #define _CAIRO_HASH_INIT_VALUE 5381 cairo_private unsigned long _cairo_hash_string (const char *c); cairo_private unsigned long _cairo_hash_bytes (unsigned long hash, const void *bytes, unsigned int length); #define _cairo_scaled_glyph_index(g) ((g)->hash_entry.hash) #define _cairo_scaled_glyph_set_index(g, i) ((g)->hash_entry.hash = (i)) #include "cairo-scaled-font-private.h" struct _cairo_font_face { /* hash_entry must be first */ cairo_hash_entry_t hash_entry; cairo_status_t status; cairo_reference_count_t ref_count; cairo_user_data_array_t user_data; const cairo_font_face_backend_t *backend; }; cairo_private void _cairo_default_context_reset_static_data (void); cairo_private void _cairo_toy_font_face_reset_static_data (void); cairo_private void _cairo_ft_font_reset_static_data (void); cairo_private void _cairo_win32_font_reset_static_data (void); #if CAIRO_HAS_COGL_SURFACE void _cairo_cogl_context_reset_static_data (void); #endif /* the font backend interface */ struct _cairo_unscaled_font_backend { cairo_bool_t (*destroy) (void *unscaled_font); }; /* #cairo_toy_font_face_t - simple family/slant/weight font faces used for * the built-in font API */ typedef struct _cairo_toy_font_face { cairo_font_face_t base; const char *family; cairo_bool_t owns_family; cairo_font_slant_t slant; cairo_font_weight_t weight; cairo_font_face_t *impl_face; /* The non-toy font face this actually uses */ } cairo_toy_font_face_t; typedef enum _cairo_scaled_glyph_info { CAIRO_SCALED_GLYPH_INFO_METRICS = (1 << 0), CAIRO_SCALED_GLYPH_INFO_SURFACE = (1 << 1), CAIRO_SCALED_GLYPH_INFO_PATH = (1 << 2), CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE = (1 << 3) } cairo_scaled_glyph_info_t; typedef struct _cairo_scaled_font_subset { cairo_scaled_font_t *scaled_font; unsigned int font_id; unsigned int subset_id; /* Index of glyphs array is subset_glyph_index. * Value of glyphs array is scaled_font_glyph_index. */ unsigned long *glyphs; char **utf8; char **glyph_names; int *to_latin_char; unsigned long *latin_to_subset_glyph_index; unsigned int num_glyphs; cairo_bool_t is_composite; cairo_bool_t is_scaled; cairo_bool_t is_latin; } cairo_scaled_font_subset_t; struct _cairo_scaled_font_backend { cairo_font_type_t type; void (*fini) (void *scaled_font); cairo_warn cairo_int_status_t (*scaled_glyph_init) (void *scaled_font, cairo_scaled_glyph_t *scaled_glyph, cairo_scaled_glyph_info_t info); /* A backend only needs to implement this or ucs4_to_index(), not * both. This allows the backend to do something more sophisticated * then just converting characters one by one. */ cairo_warn cairo_int_status_t (*text_to_glyphs) (void *scaled_font, double x, double y, const char *utf8, int utf8_len, cairo_glyph_t **glyphs, int *num_glyphs, cairo_text_cluster_t **clusters, int *num_clusters, cairo_text_cluster_flags_t *cluster_flags); unsigned long (*ucs4_to_index) (void *scaled_font, uint32_t ucs4); /* Read data from a sfnt font table. * @scaled_font: font * @tag: 4 byte table name specifying the table to read. * @offset: offset into the table * @buffer: buffer to write data into. Caller must ensure there is sufficient space. * If NULL, return the size of the table in @length. * @length: If @buffer is NULL, the size of the table will be returned in @length. * If @buffer is not null, @length specifies the number of bytes to read. * * If less than @length bytes are available to read this function * returns CAIRO_INT_STATUS_UNSUPPORTED. Note that requesting more * bytes than are available in the table may continue reading data * from the following table and return success. If this is * undesirable the caller should first query the table size. If an * error occurs the output value of @length is undefined. * * Returns CAIRO_INT_STATUS_UNSUPPORTED if not a sfnt style font or table not found. */ cairo_warn cairo_int_status_t (*load_truetype_table)(void *scaled_font, unsigned long tag, long offset, unsigned char *buffer, unsigned long *length); /* ucs4 is set to -1 if the unicode character could not be found * for the glyph */ cairo_warn cairo_int_status_t (*index_to_ucs4)(void *scaled_font, unsigned long index, uint32_t *ucs4); cairo_warn cairo_bool_t (*is_synthetic)(void *scaled_font); /* For type 1 fonts, return the glyph name for a given glyph index. * A glyph index and list of glyph names in the Type 1 fonts is provided. * The function returns the index of the glyph in the list of glyph names. * @scaled_font: font * @glyph_names: the names of each glyph in the Type 1 font in the * order they appear in the CharStrings array * @num_glyph_names: the number of names in the glyph_names array * @glyph_index: the given glyph index * @glyph_array_index: (index into glyph_names) the glyph name corresponding * to the glyph_index */ cairo_warn cairo_int_status_t (*index_to_glyph_name)(void *scaled_font, char **glyph_names, int num_glyph_names, unsigned long glyph_index, unsigned long *glyph_array_index); /* Read data from a PostScript font. * @scaled_font: font * @offset: offset into the table * @buffer: buffer to write data into. Caller must ensure there is sufficient space. * If NULL, return the size of the table in @length. * @length: If @buffer is NULL, the size of the table will be returned in @length. * If @buffer is not null, @length specifies the number of bytes to read. * * If less than @length bytes are available to read this function * returns CAIRO_INT_STATUS_UNSUPPORTED. If an error occurs the * output value of @length is undefined. * * Returns CAIRO_INT_STATUS_UNSUPPORTED if not a Type 1 font. */ cairo_warn cairo_int_status_t (*load_type1_data) (void *scaled_font, long offset, unsigned char *buffer, unsigned long *length); }; struct _cairo_font_face_backend { cairo_font_type_t type; cairo_warn cairo_status_t (*create_for_toy) (cairo_toy_font_face_t *toy_face, cairo_font_face_t **font_face); /* The destroy() function is allowed to resurrect the font face * by re-referencing. This is needed for the FreeType backend. */ cairo_bool_t (*destroy) (void *font_face); cairo_warn cairo_status_t (*scaled_font_create) (void *font_face, const cairo_matrix_t *font_matrix, const cairo_matrix_t *ctm, const cairo_font_options_t *options, cairo_scaled_font_t **scaled_font); cairo_font_face_t * (*get_implementation) (void *font_face, const cairo_matrix_t *font_matrix, const cairo_matrix_t *ctm, const cairo_font_options_t *options); }; extern const cairo_private struct _cairo_font_face_backend _cairo_user_font_face_backend; /* concrete font backends */ #if CAIRO_HAS_FT_FONT extern const cairo_private struct _cairo_font_face_backend _cairo_ft_font_face_backend; #endif #if CAIRO_HAS_WIN32_FONT extern const cairo_private struct _cairo_font_face_backend _cairo_win32_font_face_backend; #endif #if CAIRO_HAS_QUARTZ_FONT extern const cairo_private struct _cairo_font_face_backend _cairo_quartz_font_face_backend; #endif #define CAIRO_EXTEND_SURFACE_DEFAULT CAIRO_EXTEND_NONE #define CAIRO_EXTEND_GRADIENT_DEFAULT CAIRO_EXTEND_PAD #define CAIRO_FILTER_DEFAULT CAIRO_FILTER_GOOD extern const cairo_private cairo_solid_pattern_t _cairo_pattern_clear; extern const cairo_private cairo_solid_pattern_t _cairo_pattern_black; extern const cairo_private cairo_solid_pattern_t _cairo_pattern_white; struct _cairo_surface_attributes { cairo_matrix_t matrix; cairo_extend_t extend; cairo_filter_t filter; cairo_bool_t has_component_alpha; int x_offset; int y_offset; void *extra; }; #define CAIRO_FONT_SLANT_DEFAULT CAIRO_FONT_SLANT_NORMAL #define CAIRO_FONT_WEIGHT_DEFAULT CAIRO_FONT_WEIGHT_NORMAL #define CAIRO_WIN32_FONT_FAMILY_DEFAULT "Arial" #define CAIRO_QUARTZ_FONT_FAMILY_DEFAULT "Helvetica" #define CAIRO_FT_FONT_FAMILY_DEFAULT "" #define CAIRO_USER_FONT_FAMILY_DEFAULT "@cairo:" #if CAIRO_HAS_WIN32_FONT #define CAIRO_FONT_FAMILY_DEFAULT CAIRO_WIN32_FONT_FAMILY_DEFAULT #define CAIRO_FONT_FACE_BACKEND_DEFAULT &_cairo_win32_font_face_backend #elif CAIRO_HAS_QUARTZ_FONT #define CAIRO_FONT_FAMILY_DEFAULT CAIRO_QUARTZ_FONT_FAMILY_DEFAULT #define CAIRO_FONT_FACE_BACKEND_DEFAULT &_cairo_quartz_font_face_backend #elif CAIRO_HAS_FT_FONT #define CAIRO_FONT_FAMILY_DEFAULT CAIRO_FT_FONT_FAMILY_DEFAULT #define CAIRO_FONT_FACE_BACKEND_DEFAULT &_cairo_ft_font_face_backend #else #define CAIRO_FONT_FAMILY_DEFAULT CAIRO_FT_FONT_FAMILY_DEFAULT #define CAIRO_FONT_FACE_BACKEND_DEFAULT &_cairo_user_font_face_backend #endif #define CAIRO_GSTATE_OPERATOR_DEFAULT CAIRO_OPERATOR_OVER #define CAIRO_GSTATE_TOLERANCE_DEFAULT 0.1 #define CAIRO_GSTATE_FILL_RULE_DEFAULT CAIRO_FILL_RULE_WINDING #define CAIRO_GSTATE_LINE_WIDTH_DEFAULT 2.0 #define CAIRO_GSTATE_LINE_CAP_DEFAULT CAIRO_LINE_CAP_BUTT #define CAIRO_GSTATE_LINE_JOIN_DEFAULT CAIRO_LINE_JOIN_MITER #define CAIRO_GSTATE_MITER_LIMIT_DEFAULT 10.0 #define CAIRO_GSTATE_DEFAULT_FONT_SIZE 10.0 #define CAIRO_SURFACE_RESOLUTION_DEFAULT 72.0 #define CAIRO_SURFACE_FALLBACK_RESOLUTION_DEFAULT 300.0 typedef struct _cairo_stroke_face { cairo_point_t ccw; cairo_point_t point; cairo_point_t cw; cairo_slope_t dev_vector; cairo_point_double_t dev_slope; cairo_point_double_t usr_vector; double length; } cairo_stroke_face_t; /* cairo.c */ static inline double cairo_const _cairo_restrict_value (double value, double min, double max) { if (value < min) return min; else if (value > max) return max; else return value; } /* C99 round() rounds to the nearest integral value with halfway cases rounded * away from 0. _cairo_round rounds halfway cases toward positive infinity. * This matches the rounding behaviour of _cairo_lround. */ static inline double cairo_const _cairo_round (double r) { return floor (r + .5); } #if DISABLE_SOME_FLOATING_POINT cairo_private int _cairo_lround (double d) cairo_const; #else static inline int cairo_const _cairo_lround (double r) { return _cairo_round (r); } #endif cairo_private uint16_t _cairo_half_from_float (float f) cairo_const; cairo_private cairo_bool_t _cairo_operator_bounded_by_mask (cairo_operator_t op) cairo_const; cairo_private cairo_bool_t _cairo_operator_bounded_by_source (cairo_operator_t op) cairo_const; enum { CAIRO_OPERATOR_BOUND_BY_MASK = 1 << 1, CAIRO_OPERATOR_BOUND_BY_SOURCE = 1 << 2, }; cairo_private uint32_t _cairo_operator_bounded_by_either (cairo_operator_t op) cairo_const; /* cairo-color.c */ cairo_private const cairo_color_t * _cairo_stock_color (cairo_stock_t stock) cairo_pure; #define CAIRO_COLOR_WHITE _cairo_stock_color (CAIRO_STOCK_WHITE) #define CAIRO_COLOR_BLACK _cairo_stock_color (CAIRO_STOCK_BLACK) #define CAIRO_COLOR_TRANSPARENT _cairo_stock_color (CAIRO_STOCK_TRANSPARENT) cairo_private uint16_t _cairo_color_double_to_short (double d) cairo_const; cairo_private void _cairo_color_init_rgba (cairo_color_t *color, double red, double green, double blue, double alpha); cairo_private void _cairo_color_multiply_alpha (cairo_color_t *color, double alpha); cairo_private void _cairo_color_get_rgba (cairo_color_t *color, double *red, double *green, double *blue, double *alpha); cairo_private void _cairo_color_get_rgba_premultiplied (cairo_color_t *color, double *red, double *green, double *blue, double *alpha); cairo_private cairo_bool_t _cairo_color_equal (const cairo_color_t *color_a, const cairo_color_t *color_b) cairo_pure; cairo_private cairo_bool_t _cairo_color_stop_equal (const cairo_color_stop_t *color_a, const cairo_color_stop_t *color_b) cairo_pure; cairo_private cairo_content_t _cairo_color_get_content (const cairo_color_t *color) cairo_pure; /* cairo-font-face.c */ extern const cairo_private cairo_font_face_t _cairo_font_face_nil; cairo_private void _cairo_font_face_init (cairo_font_face_t *font_face, const cairo_font_face_backend_t *backend); cairo_private cairo_bool_t _cairo_font_face_destroy (void *abstract_face); cairo_private cairo_status_t _cairo_font_face_set_error (cairo_font_face_t *font_face, cairo_status_t status); cairo_private void _cairo_unscaled_font_init (cairo_unscaled_font_t *font, const cairo_unscaled_font_backend_t *backend); cairo_private_no_warn cairo_unscaled_font_t * _cairo_unscaled_font_reference (cairo_unscaled_font_t *font); cairo_private void _cairo_unscaled_font_destroy (cairo_unscaled_font_t *font); /* cairo-font-face-twin.c */ cairo_private cairo_font_face_t * _cairo_font_face_twin_create_fallback (void); cairo_private cairo_status_t _cairo_font_face_twin_create_for_toy (cairo_toy_font_face_t *toy_face, cairo_font_face_t **font_face); /* cairo-font-face-twin-data.c */ extern const cairo_private int8_t _cairo_twin_outlines[]; extern const cairo_private uint16_t _cairo_twin_charmap[128]; /* cairo-font-options.c */ cairo_private void _cairo_font_options_init_default (cairo_font_options_t *options); cairo_private void _cairo_font_options_init_copy (cairo_font_options_t *options, const cairo_font_options_t *other); cairo_private void _cairo_font_options_set_lcd_filter (cairo_font_options_t *options, cairo_lcd_filter_t lcd_filter); cairo_private cairo_lcd_filter_t _cairo_font_options_get_lcd_filter (const cairo_font_options_t *options); cairo_private void _cairo_font_options_set_round_glyph_positions (cairo_font_options_t *options, cairo_round_glyph_positions_t round); cairo_private cairo_round_glyph_positions_t _cairo_font_options_get_round_glyph_positions (const cairo_font_options_t *options); /* cairo-hull.c */ cairo_private cairo_status_t _cairo_hull_compute (cairo_pen_vertex_t *vertices, int *num_vertices); /* cairo-lzw.c */ cairo_private unsigned char * _cairo_lzw_compress (unsigned char *data, unsigned long *size_in_out); /* cairo-misc.c */ cairo_private cairo_status_t _cairo_validate_text_clusters (const char *utf8, int utf8_len, const cairo_glyph_t *glyphs, int num_glyphs, const cairo_text_cluster_t *clusters, int num_clusters, cairo_text_cluster_flags_t cluster_flags); cairo_private cairo_status_t _cairo_intern_string (const char **str_inout, int len); cairo_private void _cairo_intern_string_reset_static_data (void); cairo_private const char * cairo_get_locale_decimal_point (void); /* cairo-path-fixed.c */ cairo_private cairo_path_fixed_t * _cairo_path_fixed_create (void); cairo_private void _cairo_path_fixed_init (cairo_path_fixed_t *path); cairo_private cairo_status_t _cairo_path_fixed_init_copy (cairo_path_fixed_t *path, const cairo_path_fixed_t *other); cairo_private void _cairo_path_fixed_fini (cairo_path_fixed_t *path); cairo_private void _cairo_path_fixed_destroy (cairo_path_fixed_t *path); cairo_private cairo_status_t _cairo_path_fixed_move_to (cairo_path_fixed_t *path, cairo_fixed_t x, cairo_fixed_t y); cairo_private void _cairo_path_fixed_new_sub_path (cairo_path_fixed_t *path); cairo_private cairo_status_t _cairo_path_fixed_rel_move_to (cairo_path_fixed_t *path, cairo_fixed_t dx, cairo_fixed_t dy); cairo_private cairo_status_t _cairo_path_fixed_line_to (cairo_path_fixed_t *path, cairo_fixed_t x, cairo_fixed_t y); cairo_private cairo_status_t _cairo_path_fixed_rel_line_to (cairo_path_fixed_t *path, cairo_fixed_t dx, cairo_fixed_t dy); cairo_private cairo_status_t _cairo_path_fixed_curve_to (cairo_path_fixed_t *path, cairo_fixed_t x0, cairo_fixed_t y0, cairo_fixed_t x1, cairo_fixed_t y1, cairo_fixed_t x2, cairo_fixed_t y2); cairo_private cairo_status_t _cairo_path_fixed_rel_curve_to (cairo_path_fixed_t *path, cairo_fixed_t dx0, cairo_fixed_t dy0, cairo_fixed_t dx1, cairo_fixed_t dy1, cairo_fixed_t dx2, cairo_fixed_t dy2); cairo_private cairo_status_t _cairo_path_fixed_close_path (cairo_path_fixed_t *path); cairo_private cairo_bool_t _cairo_path_fixed_get_current_point (cairo_path_fixed_t *path, cairo_fixed_t *x, cairo_fixed_t *y); typedef cairo_status_t (cairo_path_fixed_move_to_func_t) (void *closure, const cairo_point_t *point); typedef cairo_status_t (cairo_path_fixed_line_to_func_t) (void *closure, const cairo_point_t *point); typedef cairo_status_t (cairo_path_fixed_curve_to_func_t) (void *closure, const cairo_point_t *p0, const cairo_point_t *p1, const cairo_point_t *p2); typedef cairo_status_t (cairo_path_fixed_close_path_func_t) (void *closure); cairo_private cairo_status_t _cairo_path_fixed_interpret (const cairo_path_fixed_t *path, cairo_path_fixed_move_to_func_t *move_to, cairo_path_fixed_line_to_func_t *line_to, cairo_path_fixed_curve_to_func_t *curve_to, cairo_path_fixed_close_path_func_t *close_path, void *closure); cairo_private cairo_status_t _cairo_path_fixed_interpret_flat (const cairo_path_fixed_t *path, cairo_path_fixed_move_to_func_t *move_to, cairo_path_fixed_line_to_func_t *line_to, cairo_path_fixed_close_path_func_t *close_path, void *closure, double tolerance); cairo_private cairo_bool_t _cairo_path_bounder_extents (const cairo_path_fixed_t *path, cairo_box_t *box); cairo_private cairo_bool_t _cairo_path_fixed_extents (const cairo_path_fixed_t *path, cairo_box_t *box); cairo_private void _cairo_path_fixed_approximate_clip_extents (const cairo_path_fixed_t *path, cairo_rectangle_int_t *extents); cairo_private void _cairo_path_fixed_approximate_fill_extents (const cairo_path_fixed_t *path, cairo_rectangle_int_t *extents); cairo_private void _cairo_path_fixed_approximate_fill_exact_extents (const cairo_path_fixed_t *path, cairo_rectangle_t *extents); cairo_private void _cairo_path_fixed_fill_extents (const cairo_path_fixed_t *path, cairo_fill_rule_t fill_rule, double tolerance, cairo_rectangle_int_t *extents); cairo_private void _cairo_path_fixed_fill_exact_extents (const cairo_path_fixed_t *path, cairo_fill_rule_t fill_rule, double tolerance, cairo_rectangle_t *extents); cairo_private void _cairo_path_fixed_approximate_stroke_extents (const cairo_path_fixed_t *path, const cairo_stroke_style_t *style, const cairo_matrix_t *ctm, cairo_rectangle_int_t *extents); cairo_private void _cairo_path_fixed_approximate_stroke_exact_extents (const cairo_path_fixed_t *path, const cairo_stroke_style_t *style, const cairo_matrix_t *ctm, cairo_rectangle_t *extents); cairo_private cairo_status_t _cairo_path_fixed_stroke_extents (const cairo_path_fixed_t *path, const cairo_stroke_style_t *style, const cairo_matrix_t *ctm, const cairo_matrix_t *ctm_inverse, double tolerance, cairo_rectangle_int_t *extents); cairo_private cairo_status_t _cairo_path_fixed_stroke_exact_extents (const cairo_path_fixed_t *path, const cairo_stroke_style_t *style, const cairo_matrix_t *ctm, const cairo_matrix_t *ctm_inverse, double tolerance, cairo_rectangle_t *extents); cairo_private void _cairo_path_fixed_transform (cairo_path_fixed_t *path, const cairo_matrix_t *matrix); cairo_private cairo_bool_t _cairo_path_fixed_is_single_arc (const cairo_path_fixed_t *path); cairo_private cairo_bool_t _cairo_path_fixed_is_empty (const cairo_path_fixed_t *path); cairo_private cairo_bool_t _cairo_path_fixed_is_single_line (const cairo_path_fixed_t *path); cairo_private cairo_bool_t _cairo_path_fixed_is_box (const cairo_path_fixed_t *path, cairo_box_t *box); cairo_private cairo_bool_t _cairo_path_fixed_is_rectangle (const cairo_path_fixed_t *path, cairo_box_t *box); /* cairo-path-in-fill.c */ cairo_private cairo_bool_t _cairo_path_fixed_in_fill (const cairo_path_fixed_t *path, cairo_fill_rule_t fill_rule, double tolerance, double x, double y); /* cairo-path-fill.c */ cairo_private cairo_status_t _cairo_path_fixed_fill_to_polygon (const cairo_path_fixed_t *path, double tolerance, cairo_polygon_t *polygon); cairo_private cairo_status_t _cairo_path_fixed_fill_rectilinear_to_polygon (const cairo_path_fixed_t *path, cairo_antialias_t antialias, cairo_polygon_t *polygon); cairo_private cairo_status_t _cairo_path_fixed_fill_rectilinear_to_boxes (const cairo_path_fixed_t *path, cairo_fill_rule_t fill_rule, cairo_antialias_t antialias, cairo_boxes_t *boxes); cairo_private cairo_region_t * _cairo_path_fixed_fill_rectilinear_to_region (const cairo_path_fixed_t *path, cairo_fill_rule_t fill_rule, const cairo_rectangle_int_t *extents); cairo_private cairo_status_t _cairo_path_fixed_fill_to_traps (const cairo_path_fixed_t *path, cairo_fill_rule_t fill_rule, double tolerance, cairo_traps_t *traps); /* cairo-path-stroke.c */ cairo_private cairo_status_t _cairo_path_fixed_stroke_to_polygon (const cairo_path_fixed_t *path, const cairo_stroke_style_t *stroke_style, const cairo_matrix_t *ctm, const cairo_matrix_t *ctm_inverse, double tolerance, cairo_polygon_t *polygon); cairo_private cairo_int_status_t _cairo_path_fixed_stroke_to_tristrip (const cairo_path_fixed_t *path, const cairo_stroke_style_t*style, const cairo_matrix_t *ctm, const cairo_matrix_t *ctm_inverse, double tolerance, cairo_tristrip_t *strip); cairo_private cairo_status_t _cairo_path_fixed_stroke_dashed_to_polygon (const cairo_path_fixed_t *path, const cairo_stroke_style_t *stroke_style, const cairo_matrix_t *ctm, const cairo_matrix_t *ctm_inverse, double tolerance, cairo_polygon_t *polygon); cairo_private cairo_int_status_t _cairo_path_fixed_stroke_rectilinear_to_boxes (const cairo_path_fixed_t *path, const cairo_stroke_style_t *stroke_style, const cairo_matrix_t *ctm, cairo_antialias_t antialias, cairo_boxes_t *boxes); cairo_private cairo_int_status_t _cairo_path_fixed_stroke_to_traps (const cairo_path_fixed_t *path, const cairo_stroke_style_t *stroke_style, const cairo_matrix_t *ctm, const cairo_matrix_t *ctm_inverse, double tolerance, cairo_traps_t *traps); cairo_private cairo_int_status_t _cairo_path_fixed_stroke_polygon_to_traps (const cairo_path_fixed_t *path, const cairo_stroke_style_t *stroke_style, const cairo_matrix_t *ctm, const cairo_matrix_t *ctm_inverse, double tolerance, cairo_traps_t *traps); cairo_private cairo_status_t _cairo_path_fixed_stroke_to_shaper (cairo_path_fixed_t *path, const cairo_stroke_style_t *stroke_style, const cairo_matrix_t *ctm, const cairo_matrix_t *ctm_inverse, double tolerance, cairo_status_t (*add_triangle) (void *closure, const cairo_point_t triangle[3]), cairo_status_t (*add_triangle_fan) (void *closure, const cairo_point_t *midpt, const cairo_point_t *points, int npoints), cairo_status_t (*add_quad) (void *closure, const cairo_point_t quad[4]), void *closure); /* cairo-scaled-font.c */ cairo_private void _cairo_scaled_font_freeze_cache (cairo_scaled_font_t *scaled_font); cairo_private void _cairo_scaled_font_thaw_cache (cairo_scaled_font_t *scaled_font); cairo_private void _cairo_scaled_font_reset_cache (cairo_scaled_font_t *scaled_font); cairo_private cairo_status_t _cairo_scaled_font_set_error (cairo_scaled_font_t *scaled_font, cairo_status_t status); cairo_private cairo_scaled_font_t * _cairo_scaled_font_create_in_error (cairo_status_t status); cairo_private void _cairo_scaled_font_reset_static_data (void); cairo_private cairo_status_t _cairo_scaled_font_register_placeholder_and_unlock_font_map (cairo_scaled_font_t *scaled_font); cairo_private void _cairo_scaled_font_unregister_placeholder_and_lock_font_map (cairo_scaled_font_t *scaled_font); cairo_private cairo_status_t _cairo_scaled_font_init (cairo_scaled_font_t *scaled_font, cairo_font_face_t *font_face, const cairo_matrix_t *font_matrix, const cairo_matrix_t *ctm, const cairo_font_options_t *options, const cairo_scaled_font_backend_t *backend); cairo_private cairo_status_t _cairo_scaled_font_set_metrics (cairo_scaled_font_t *scaled_font, cairo_font_extents_t *fs_metrics); /* This should only be called on an error path by a scaled_font constructor */ cairo_private void _cairo_scaled_font_fini (cairo_scaled_font_t *scaled_font); cairo_private cairo_status_t _cairo_scaled_font_font_extents (cairo_scaled_font_t *scaled_font, cairo_font_extents_t *extents); cairo_private cairo_status_t _cairo_scaled_font_glyph_device_extents (cairo_scaled_font_t *scaled_font, const cairo_glyph_t *glyphs, int num_glyphs, cairo_rectangle_int_t *extents, cairo_bool_t *overlap); cairo_private cairo_bool_t _cairo_scaled_font_glyph_approximate_extents (cairo_scaled_font_t *scaled_font, const cairo_glyph_t *glyphs, int num_glyphs, cairo_rectangle_int_t *extents); cairo_private cairo_status_t _cairo_scaled_font_show_glyphs (cairo_scaled_font_t *scaled_font, cairo_operator_t op, const cairo_pattern_t *source, cairo_surface_t *surface, int source_x, int source_y, int dest_x, int dest_y, unsigned int width, unsigned int height, cairo_glyph_t *glyphs, int num_glyphs, cairo_region_t *clip_region); cairo_private cairo_status_t _cairo_scaled_font_glyph_path (cairo_scaled_font_t *scaled_font, const cairo_glyph_t *glyphs, int num_glyphs, cairo_path_fixed_t *path); cairo_private void _cairo_scaled_glyph_set_metrics (cairo_scaled_glyph_t *scaled_glyph, cairo_scaled_font_t *scaled_font, cairo_text_extents_t *fs_metrics); cairo_private void _cairo_scaled_glyph_set_surface (cairo_scaled_glyph_t *scaled_glyph, cairo_scaled_font_t *scaled_font, cairo_image_surface_t *surface); cairo_private void _cairo_scaled_glyph_set_path (cairo_scaled_glyph_t *scaled_glyph, cairo_scaled_font_t *scaled_font, cairo_path_fixed_t *path); cairo_private void _cairo_scaled_glyph_set_recording_surface (cairo_scaled_glyph_t *scaled_glyph, cairo_scaled_font_t *scaled_font, cairo_surface_t *recording_surface); cairo_private cairo_int_status_t _cairo_scaled_glyph_lookup (cairo_scaled_font_t *scaled_font, unsigned long index, cairo_scaled_glyph_info_t info, cairo_scaled_glyph_t **scaled_glyph_ret); cairo_private double _cairo_scaled_font_get_max_scale (cairo_scaled_font_t *scaled_font); cairo_private void _cairo_scaled_font_map_destroy (void); /* cairo-stroke-style.c */ cairo_private void _cairo_stroke_style_init (cairo_stroke_style_t *style); cairo_private cairo_status_t _cairo_stroke_style_init_copy (cairo_stroke_style_t *style, const cairo_stroke_style_t *other); cairo_private void _cairo_stroke_style_fini (cairo_stroke_style_t *style); cairo_private void _cairo_stroke_style_max_distance_from_path (const cairo_stroke_style_t *style, const cairo_path_fixed_t *path, const cairo_matrix_t *ctm, double *dx, double *dy); cairo_private void _cairo_stroke_style_max_line_distance_from_path (const cairo_stroke_style_t *style, const cairo_path_fixed_t *path, const cairo_matrix_t *ctm, double *dx, double *dy); cairo_private void _cairo_stroke_style_max_join_distance_from_path (const cairo_stroke_style_t *style, const cairo_path_fixed_t *path, const cairo_matrix_t *ctm, double *dx, double *dy); cairo_private double _cairo_stroke_style_dash_period (const cairo_stroke_style_t *style); cairo_private double _cairo_stroke_style_dash_stroked (const cairo_stroke_style_t *style); cairo_private cairo_bool_t _cairo_stroke_style_dash_can_approximate (const cairo_stroke_style_t *style, const cairo_matrix_t *ctm, double tolerance); cairo_private void _cairo_stroke_style_dash_approximate (const cairo_stroke_style_t *style, const cairo_matrix_t *ctm, double tolerance, double *dash_offset, double *dashes, unsigned int *num_dashes); /* cairo-surface.c */ cairo_private cairo_status_t _cairo_surface_copy_mime_data (cairo_surface_t *dst, cairo_surface_t *src); cairo_private_no_warn cairo_int_status_t _cairo_surface_set_error (cairo_surface_t *surface, cairo_int_status_t status); cairo_private void _cairo_surface_set_resolution (cairo_surface_t *surface, double x_res, double y_res); cairo_private cairo_surface_t * _cairo_surface_create_similar_scratch (cairo_surface_t *other, cairo_content_t content, int width, int height); cairo_private cairo_surface_t * _cairo_surface_create_for_rectangle_int (cairo_surface_t *target, const cairo_rectangle_int_t *extents); cairo_private cairo_surface_t * _cairo_surface_create_scratch (cairo_surface_t *other, cairo_content_t content, int width, int height, const cairo_color_t *color); cairo_private void _cairo_surface_init (cairo_surface_t *surface, const cairo_surface_backend_t *backend, cairo_device_t *device, cairo_content_t content); cairo_private void _cairo_surface_set_font_options (cairo_surface_t *surface, cairo_font_options_t *options); cairo_private cairo_status_t _cairo_surface_paint (cairo_surface_t *surface, cairo_operator_t op, const cairo_pattern_t *source, const cairo_clip_t *clip); cairo_private cairo_image_surface_t * _cairo_surface_map_to_image (cairo_surface_t *surface, const cairo_rectangle_int_t *extents); cairo_private_no_warn cairo_int_status_t _cairo_surface_unmap_image (cairo_surface_t *surface, cairo_image_surface_t *image); cairo_private cairo_status_t _cairo_surface_mask (cairo_surface_t *surface, cairo_operator_t op, const cairo_pattern_t *source, const cairo_pattern_t *mask, const cairo_clip_t *clip); cairo_private cairo_status_t _cairo_surface_fill_stroke (cairo_surface_t *surface, cairo_operator_t fill_op, const cairo_pattern_t *fill_source, cairo_fill_rule_t fill_rule, double fill_tolerance, cairo_antialias_t fill_antialias, cairo_path_fixed_t *path, cairo_operator_t stroke_op, const cairo_pattern_t *stroke_source, const cairo_stroke_style_t *stroke_style, const cairo_matrix_t *stroke_ctm, const cairo_matrix_t *stroke_ctm_inverse, double stroke_tolerance, cairo_antialias_t stroke_antialias, const cairo_clip_t *clip); cairo_private cairo_status_t _cairo_surface_stroke (cairo_surface_t *surface, cairo_operator_t op, const cairo_pattern_t *source, const cairo_path_fixed_t *path, const cairo_stroke_style_t *style, const cairo_matrix_t *ctm, const cairo_matrix_t *ctm_inverse, double tolerance, cairo_antialias_t antialias, const cairo_clip_t *clip); cairo_private cairo_status_t _cairo_surface_fill (cairo_surface_t *surface, cairo_operator_t op, const cairo_pattern_t *source, const cairo_path_fixed_t *path, cairo_fill_rule_t fill_rule, double tolerance, cairo_antialias_t antialias, const cairo_clip_t *clip); cairo_private cairo_status_t _cairo_surface_show_text_glyphs (cairo_surface_t *surface, cairo_operator_t op, const cairo_pattern_t *source, const char *utf8, int utf8_len, cairo_glyph_t *glyphs, int num_glyphs, const cairo_text_cluster_t *clusters, int num_clusters, cairo_text_cluster_flags_t cluster_flags, cairo_scaled_font_t *scaled_font, const cairo_clip_t *clip); cairo_private cairo_status_t _cairo_surface_acquire_source_image (cairo_surface_t *surface, cairo_image_surface_t **image_out, void **image_extra); cairo_private void _cairo_surface_release_source_image (cairo_surface_t *surface, cairo_image_surface_t *image, void *image_extra); cairo_private cairo_surface_t * _cairo_surface_snapshot (cairo_surface_t *surface); cairo_private void _cairo_surface_attach_snapshot (cairo_surface_t *surface, cairo_surface_t *snapshot, cairo_surface_func_t detach_func); cairo_private cairo_surface_t * _cairo_surface_has_snapshot (cairo_surface_t *surface, const cairo_surface_backend_t *backend); cairo_private void _cairo_surface_detach_snapshot (cairo_surface_t *snapshot); cairo_private cairo_status_t _cairo_surface_begin_modification (cairo_surface_t *surface); cairo_private_no_warn cairo_bool_t _cairo_surface_get_extents (cairo_surface_t *surface, cairo_rectangle_int_t *extents); cairo_private cairo_bool_t _cairo_surface_has_device_transform (cairo_surface_t *surface) cairo_pure; cairo_private void _cairo_surface_release_device_reference (cairo_surface_t *surface); /* cairo-image-surface.c */ /* XXX: In cairo 1.2.0 we added a new %CAIRO_FORMAT_RGB16_565 but * neglected to adjust this macro. The net effect is that it's * impossible to externally create an image surface with this * format. This is perhaps a good thing since we also neglected to fix * up things like cairo_surface_write_to_png() for the new format * (-Wswitch-enum will tell you where). Is it obvious that format was * added in haste? * * The reason for the new format was to allow the xlib backend to be * used on X servers with a 565 visual. So the new format did its job * for that, even without being considered "valid" for the sake of * things like cairo_image_surface_create(). * * Since 1.2.0 we ran into the same situtation with X servers with BGR * visuals. This time we invented #cairo_internal_format_t instead, * (see it for more discussion). * * The punchline is that %CAIRO_FORMAT_VALID must not conside any * internal format to be valid. Also we need to decide if the * RGB16_565 should be moved to instead be an internal format. If so, * this macro need not change for it. (We probably will need to leave * an RGB16_565 value in the header files for the sake of code that * might have that value in it.) * * If we do decide to start fully supporting RGB16_565 as an external * format, then %CAIRO_FORMAT_VALID needs to be adjusted to include * it. But that should not happen before all necessary code is fixed * to support it (at least cairo_surface_write_to_png() and a few spots * in cairo-xlib-surface.c--again see -Wswitch-enum). */ #define CAIRO_FORMAT_VALID(format) ((format) >= CAIRO_FORMAT_ARGB32 && \ (format) <= CAIRO_FORMAT_RGB30) /* pixman-required stride alignment in bytes. */ #define CAIRO_STRIDE_ALIGNMENT (sizeof (uint32_t)) #define CAIRO_STRIDE_FOR_WIDTH_BPP(w,bpp) \ ((((bpp)*(w)+7)/8 + CAIRO_STRIDE_ALIGNMENT-1) & -CAIRO_STRIDE_ALIGNMENT) #define CAIRO_CONTENT_VALID(content) ((content) && \ (((content) & ~(CAIRO_CONTENT_COLOR | \ CAIRO_CONTENT_ALPHA | \ CAIRO_CONTENT_COLOR_ALPHA))\ == 0)) cairo_private int _cairo_format_bits_per_pixel (cairo_format_t format) cairo_const; cairo_private cairo_format_t _cairo_format_from_content (cairo_content_t content) cairo_const; cairo_private cairo_format_t _cairo_format_from_pixman_format (pixman_format_code_t pixman_format); cairo_private cairo_content_t _cairo_content_from_format (cairo_format_t format) cairo_const; cairo_private cairo_content_t _cairo_content_from_pixman_format (pixman_format_code_t pixman_format); cairo_private cairo_surface_t * _cairo_image_surface_create_for_pixman_image (pixman_image_t *pixman_image, pixman_format_code_t pixman_format); cairo_private pixman_format_code_t _cairo_format_to_pixman_format_code (cairo_format_t format); cairo_private cairo_bool_t _pixman_format_from_masks (cairo_format_masks_t *masks, pixman_format_code_t *format_ret); cairo_private cairo_bool_t _pixman_format_to_masks (pixman_format_code_t pixman_format, cairo_format_masks_t *masks); cairo_private void _cairo_image_scaled_glyph_fini (cairo_scaled_font_t *scaled_font, cairo_scaled_glyph_t *scaled_glyph); cairo_private void _cairo_image_reset_static_data (void); cairo_private cairo_surface_t * _cairo_image_surface_create_with_pixman_format (unsigned char *data, pixman_format_code_t pixman_format, int width, int height, int stride); cairo_private cairo_surface_t * _cairo_image_surface_create_with_content (cairo_content_t content, int width, int height); cairo_private void _cairo_image_surface_assume_ownership_of_data (cairo_image_surface_t *surface); cairo_private cairo_image_surface_t * _cairo_image_surface_coerce (cairo_image_surface_t *surface); cairo_private cairo_image_surface_t * _cairo_image_surface_coerce_to_format (cairo_image_surface_t *surface, cairo_format_t format); cairo_private cairo_image_transparency_t _cairo_image_analyze_transparency (cairo_image_surface_t *image); cairo_private cairo_image_color_t _cairo_image_analyze_color (cairo_image_surface_t *image); /* cairo-pen.c */ cairo_private int _cairo_pen_vertices_needed (double tolerance, double radius, const cairo_matrix_t *matrix); cairo_private cairo_status_t _cairo_pen_init (cairo_pen_t *pen, double radius, double tolerance, const cairo_matrix_t *ctm); cairo_private void _cairo_pen_init_empty (cairo_pen_t *pen); cairo_private cairo_status_t _cairo_pen_init_copy (cairo_pen_t *pen, const cairo_pen_t *other); cairo_private void _cairo_pen_fini (cairo_pen_t *pen); cairo_private cairo_status_t _cairo_pen_add_points (cairo_pen_t *pen, cairo_point_t *point, int num_points); cairo_private int _cairo_pen_find_active_cw_vertex_index (const cairo_pen_t *pen, const cairo_slope_t *slope); cairo_private int _cairo_pen_find_active_ccw_vertex_index (const cairo_pen_t *pen, const cairo_slope_t *slope); cairo_private void _cairo_pen_find_active_cw_vertices (const cairo_pen_t *pen, const cairo_slope_t *in, const cairo_slope_t *out, int *start, int *stop); cairo_private void _cairo_pen_find_active_ccw_vertices (const cairo_pen_t *pen, const cairo_slope_t *in, const cairo_slope_t *out, int *start, int *stop); /* cairo-polygon.c */ cairo_private void _cairo_polygon_init (cairo_polygon_t *polygon, const cairo_box_t *boxes, int num_boxes); cairo_private void _cairo_polygon_init_with_clip (cairo_polygon_t *polygon, const cairo_clip_t *clip); cairo_private cairo_status_t _cairo_polygon_init_boxes (cairo_polygon_t *polygon, const cairo_boxes_t *boxes); cairo_private cairo_status_t _cairo_polygon_init_box_array (cairo_polygon_t *polygon, cairo_box_t *boxes, int num_boxes); cairo_private void _cairo_polygon_limit (cairo_polygon_t *polygon, const cairo_box_t *limits, int num_limits); cairo_private void _cairo_polygon_limit_to_clip (cairo_polygon_t *polygon, const cairo_clip_t *clip); cairo_private void _cairo_polygon_fini (cairo_polygon_t *polygon); cairo_private_no_warn cairo_status_t _cairo_polygon_add_line (cairo_polygon_t *polygon, const cairo_line_t *line, int top, int bottom, int dir); cairo_private_no_warn cairo_status_t _cairo_polygon_add_external_edge (void *polygon, const cairo_point_t *p1, const cairo_point_t *p2); cairo_private_no_warn cairo_status_t _cairo_polygon_add_contour (cairo_polygon_t *polygon, const cairo_contour_t *contour); cairo_private void _cairo_polygon_translate (cairo_polygon_t *polygon, int dx, int dy); cairo_private cairo_status_t _cairo_polygon_reduce (cairo_polygon_t *polygon, cairo_fill_rule_t fill_rule); cairo_private cairo_status_t _cairo_polygon_intersect (cairo_polygon_t *a, int winding_a, cairo_polygon_t *b, int winding_b); cairo_private cairo_status_t _cairo_polygon_intersect_with_boxes (cairo_polygon_t *polygon, cairo_fill_rule_t *winding, cairo_box_t *boxes, int num_boxes); static inline cairo_bool_t _cairo_polygon_is_empty (const cairo_polygon_t *polygon) { return polygon->num_edges == 0 || polygon->extents.p2.x <= polygon->extents.p1.x; } #define _cairo_polygon_status(P) ((cairo_polygon_t *) (P))->status /* cairo-spline.c */ cairo_private cairo_bool_t _cairo_spline_init (cairo_spline_t *spline, cairo_spline_add_point_func_t add_point_func, void *closure, const cairo_point_t *a, const cairo_point_t *b, const cairo_point_t *c, const cairo_point_t *d); cairo_private cairo_status_t _cairo_spline_decompose (cairo_spline_t *spline, double tolerance); cairo_private cairo_status_t _cairo_spline_bound (cairo_spline_add_point_func_t add_point_func, void *closure, const cairo_point_t *p0, const cairo_point_t *p1, const cairo_point_t *p2, const cairo_point_t *p3); /* cairo-matrix.c */ cairo_private void _cairo_matrix_get_affine (const cairo_matrix_t *matrix, double *xx, double *yx, double *xy, double *yy, double *x0, double *y0); cairo_private void _cairo_matrix_transform_bounding_box (const cairo_matrix_t *matrix, double *x1, double *y1, double *x2, double *y2, cairo_bool_t *is_tight); cairo_private void _cairo_matrix_transform_bounding_box_fixed (const cairo_matrix_t *matrix, cairo_box_t *bbox, cairo_bool_t *is_tight); cairo_private cairo_bool_t _cairo_matrix_is_invertible (const cairo_matrix_t *matrix) cairo_pure; cairo_private cairo_bool_t _cairo_matrix_is_scale_0 (const cairo_matrix_t *matrix) cairo_pure; cairo_private double _cairo_matrix_compute_determinant (const cairo_matrix_t *matrix) cairo_pure; cairo_private cairo_status_t _cairo_matrix_compute_basis_scale_factors (const cairo_matrix_t *matrix, double *sx, double *sy, int x_major); static inline cairo_bool_t _cairo_matrix_is_identity (const cairo_matrix_t *matrix) { return (matrix->xx == 1.0 && matrix->yx == 0.0 && matrix->xy == 0.0 && matrix->yy == 1.0 && matrix->x0 == 0.0 && matrix->y0 == 0.0); } static inline cairo_bool_t _cairo_matrix_is_translation (const cairo_matrix_t *matrix) { return (matrix->xx == 1.0 && matrix->yx == 0.0 && matrix->xy == 0.0 && matrix->yy == 1.0); } static inline cairo_bool_t _cairo_matrix_is_scale (const cairo_matrix_t *matrix) { return matrix->yx == 0.0 && matrix->xy == 0.0; } cairo_private cairo_bool_t _cairo_matrix_is_integer_translation(const cairo_matrix_t *matrix, int *itx, int *ity); cairo_private cairo_bool_t _cairo_matrix_has_unity_scale (const cairo_matrix_t *matrix); cairo_private cairo_bool_t _cairo_matrix_is_pixel_exact (const cairo_matrix_t *matrix) cairo_pure; cairo_private double _cairo_matrix_transformed_circle_major_axis (const cairo_matrix_t *matrix, double radius) cairo_pure; cairo_private cairo_bool_t _cairo_matrix_is_pixman_translation (const cairo_matrix_t *matrix, cairo_filter_t filter, int *out_x_offset, int *out_y_offset); cairo_private cairo_status_t _cairo_matrix_to_pixman_matrix_offset (const cairo_matrix_t *matrix, cairo_filter_t filter, double xc, double yc, pixman_transform_t *out_transform, int *out_x_offset, int *out_y_offset); cairo_private cairo_status_t _cairo_bentley_ottmann_tessellate_rectilinear_polygon (cairo_traps_t *traps, const cairo_polygon_t *polygon, cairo_fill_rule_t fill_rule); cairo_private cairo_status_t _cairo_bentley_ottmann_tessellate_polygon (cairo_traps_t *traps, const cairo_polygon_t *polygon, cairo_fill_rule_t fill_rule); cairo_private cairo_status_t _cairo_bentley_ottmann_tessellate_traps (cairo_traps_t *traps, cairo_fill_rule_t fill_rule); cairo_private cairo_status_t _cairo_bentley_ottmann_tessellate_rectangular_traps (cairo_traps_t *traps, cairo_fill_rule_t fill_rule); cairo_private cairo_status_t _cairo_bentley_ottmann_tessellate_boxes (const cairo_boxes_t *in, cairo_fill_rule_t fill_rule, cairo_boxes_t *out); cairo_private cairo_status_t _cairo_bentley_ottmann_tessellate_rectilinear_traps (cairo_traps_t *traps, cairo_fill_rule_t fill_rule); cairo_private cairo_status_t _cairo_bentley_ottmann_tessellate_rectilinear_polygon_to_boxes (const cairo_polygon_t *polygon, cairo_fill_rule_t fill_rule, cairo_boxes_t *boxes); cairo_private void _cairo_trapezoid_array_translate_and_scale (cairo_trapezoid_t *offset_traps, cairo_trapezoid_t *src_traps, int num_traps, double tx, double ty, double sx, double sy); #if CAIRO_HAS_DRM_SURFACE cairo_private void _cairo_drm_device_reset_static_data (void); #endif cairo_private void _cairo_clip_reset_static_data (void); cairo_private void _cairo_pattern_reset_static_data (void); /* cairo-unicode.c */ cairo_private int _cairo_utf8_get_char_validated (const char *p, uint32_t *unicode); cairo_private cairo_status_t _cairo_utf8_to_ucs4 (const char *str, int len, uint32_t **result, int *items_written); cairo_private int _cairo_ucs4_to_utf8 (uint32_t unicode, char *utf8); #if CAIRO_HAS_WIN32_FONT || CAIRO_HAS_QUARTZ_FONT || CAIRO_HAS_PDF_OPERATORS # define CAIRO_HAS_UTF8_TO_UTF16 1 #endif #if CAIRO_HAS_UTF8_TO_UTF16 cairo_private cairo_status_t _cairo_utf8_to_utf16 (const char *str, int len, uint16_t **result, int *items_written); #endif cairo_private void _cairo_matrix_multiply (cairo_matrix_t *r, const cairo_matrix_t *a, const cairo_matrix_t *b); /* cairo-observer.c */ cairo_private void _cairo_observers_notify (cairo_list_t *observers, void *arg); /* Avoid unnecessary PLT entries. */ slim_hidden_proto (cairo_clip_preserve); slim_hidden_proto (cairo_close_path); slim_hidden_proto (cairo_create); slim_hidden_proto (cairo_curve_to); slim_hidden_proto (cairo_destroy); slim_hidden_proto (cairo_fill_preserve); slim_hidden_proto (cairo_font_face_destroy); slim_hidden_proto (cairo_font_face_get_user_data); slim_hidden_proto_no_warn (cairo_font_face_reference); slim_hidden_proto (cairo_font_face_set_user_data); slim_hidden_proto (cairo_font_options_equal); slim_hidden_proto (cairo_font_options_hash); slim_hidden_proto (cairo_font_options_merge); slim_hidden_proto (cairo_font_options_set_antialias); slim_hidden_proto (cairo_font_options_set_font_color); slim_hidden_proto (cairo_font_options_set_hint_metrics); slim_hidden_proto (cairo_font_options_set_hint_style); slim_hidden_proto (cairo_font_options_set_subpixel_order); slim_hidden_proto (cairo_font_options_status); slim_hidden_proto (cairo_format_stride_for_width); slim_hidden_proto (cairo_get_current_point); slim_hidden_proto (cairo_get_line_width); slim_hidden_proto (cairo_get_matrix); slim_hidden_proto (cairo_get_scaled_font); slim_hidden_proto (cairo_get_target); slim_hidden_proto (cairo_get_tolerance); slim_hidden_proto (cairo_glyph_allocate); slim_hidden_proto (cairo_glyph_free); slim_hidden_proto (cairo_image_surface_create); slim_hidden_proto (cairo_image_surface_create_for_data); slim_hidden_proto (cairo_image_surface_get_data); slim_hidden_proto (cairo_image_surface_get_format); slim_hidden_proto (cairo_image_surface_get_height); slim_hidden_proto (cairo_image_surface_get_stride); slim_hidden_proto (cairo_image_surface_get_width); slim_hidden_proto (cairo_line_to); slim_hidden_proto (cairo_mask); slim_hidden_proto (cairo_matrix_init); slim_hidden_proto (cairo_matrix_init_identity); slim_hidden_proto (cairo_matrix_init_rotate); slim_hidden_proto (cairo_matrix_init_scale); slim_hidden_proto (cairo_matrix_init_translate); slim_hidden_proto (cairo_matrix_invert); slim_hidden_proto (cairo_matrix_multiply); slim_hidden_proto (cairo_matrix_scale); slim_hidden_proto (cairo_matrix_transform_distance); slim_hidden_proto (cairo_matrix_transform_point); slim_hidden_proto (cairo_matrix_translate); slim_hidden_proto (cairo_move_to); slim_hidden_proto (cairo_new_path); slim_hidden_proto (cairo_paint); slim_hidden_proto (cairo_pattern_add_color_stop_rgba); slim_hidden_proto (cairo_pattern_create_for_surface); slim_hidden_proto (cairo_pattern_create_rgb); slim_hidden_proto (cairo_pattern_create_rgba); slim_hidden_proto (cairo_pattern_destroy); slim_hidden_proto (cairo_pattern_get_extend); slim_hidden_proto (cairo_mesh_pattern_curve_to); slim_hidden_proto (cairo_mesh_pattern_get_control_point); slim_hidden_proto (cairo_mesh_pattern_get_corner_color_rgba); slim_hidden_proto (cairo_mesh_pattern_get_patch_count); slim_hidden_proto (cairo_mesh_pattern_get_path); slim_hidden_proto (cairo_mesh_pattern_line_to); slim_hidden_proto (cairo_mesh_pattern_move_to); slim_hidden_proto (cairo_mesh_pattern_set_corner_color_rgba); slim_hidden_proto_no_warn (cairo_pattern_reference); slim_hidden_proto (cairo_pattern_set_matrix); slim_hidden_proto (cairo_pop_group); slim_hidden_proto (cairo_push_group_with_content); slim_hidden_proto_no_warn (cairo_path_destroy); slim_hidden_proto (cairo_recording_surface_create); slim_hidden_proto (cairo_rel_line_to); slim_hidden_proto (cairo_restore); slim_hidden_proto (cairo_save); slim_hidden_proto (cairo_scale); slim_hidden_proto (cairo_scaled_font_create); slim_hidden_proto (cairo_scaled_font_destroy); slim_hidden_proto (cairo_scaled_font_extents); slim_hidden_proto (cairo_scaled_font_get_ctm); slim_hidden_proto (cairo_scaled_font_get_font_face); slim_hidden_proto (cairo_scaled_font_get_font_matrix); slim_hidden_proto (cairo_scaled_font_get_font_options); slim_hidden_proto (cairo_scaled_font_glyph_extents); slim_hidden_proto_no_warn (cairo_scaled_font_reference); slim_hidden_proto (cairo_scaled_font_status); slim_hidden_proto (cairo_scaled_font_get_user_data); slim_hidden_proto (cairo_scaled_font_set_user_data); slim_hidden_proto (cairo_scaled_font_text_to_glyphs); slim_hidden_proto (cairo_set_font_matrix); slim_hidden_proto (cairo_set_font_options); slim_hidden_proto (cairo_set_font_size); slim_hidden_proto (cairo_set_line_cap); slim_hidden_proto (cairo_set_line_join); slim_hidden_proto (cairo_set_line_width); slim_hidden_proto (cairo_set_matrix); slim_hidden_proto (cairo_set_operator); slim_hidden_proto (cairo_set_source); slim_hidden_proto (cairo_set_source_rgb); slim_hidden_proto (cairo_set_source_surface); slim_hidden_proto (cairo_set_tolerance); slim_hidden_proto (cairo_status); slim_hidden_proto (cairo_stroke); slim_hidden_proto (cairo_stroke_preserve); slim_hidden_proto (cairo_surface_copy_page); slim_hidden_proto (cairo_surface_create_similar_image); slim_hidden_proto (cairo_surface_destroy); slim_hidden_proto (cairo_surface_finish); slim_hidden_proto (cairo_surface_flush); slim_hidden_proto (cairo_surface_get_device_offset); slim_hidden_proto (cairo_surface_get_device_scale); slim_hidden_proto (cairo_surface_get_font_options); slim_hidden_proto (cairo_surface_get_mime_data); slim_hidden_proto (cairo_surface_has_show_text_glyphs); slim_hidden_proto (cairo_surface_mark_dirty); slim_hidden_proto (cairo_surface_mark_dirty_rectangle); slim_hidden_proto_no_warn (cairo_surface_reference); slim_hidden_proto (cairo_surface_set_device_offset); slim_hidden_proto (cairo_surface_set_device_scale); slim_hidden_proto (cairo_surface_set_fallback_resolution); slim_hidden_proto (cairo_surface_set_mime_data); slim_hidden_proto (cairo_surface_show_page); slim_hidden_proto (cairo_surface_status); slim_hidden_proto (cairo_surface_supports_mime_type); slim_hidden_proto (cairo_text_cluster_allocate); slim_hidden_proto (cairo_text_cluster_free); slim_hidden_proto (cairo_toy_font_face_create); slim_hidden_proto (cairo_toy_font_face_get_slant); slim_hidden_proto (cairo_toy_font_face_get_weight); slim_hidden_proto (cairo_translate); slim_hidden_proto (cairo_transform); slim_hidden_proto (cairo_user_font_face_create); slim_hidden_proto (cairo_user_font_face_set_init_func); slim_hidden_proto (cairo_user_font_face_set_render_glyph_func); slim_hidden_proto (cairo_user_font_face_set_unicode_to_glyph_func); slim_hidden_proto (cairo_device_to_user); slim_hidden_proto (cairo_user_to_device); slim_hidden_proto (cairo_user_to_device_distance); slim_hidden_proto (cairo_version_string); slim_hidden_proto (cairo_region_create); slim_hidden_proto (cairo_region_create_rectangle); slim_hidden_proto (cairo_region_create_rectangles); slim_hidden_proto (cairo_region_copy); slim_hidden_proto (cairo_region_reference); slim_hidden_proto (cairo_region_destroy); slim_hidden_proto (cairo_region_equal); slim_hidden_proto (cairo_region_status); slim_hidden_proto (cairo_region_get_extents); slim_hidden_proto (cairo_region_num_rectangles); slim_hidden_proto (cairo_region_get_rectangle); slim_hidden_proto (cairo_region_is_empty); slim_hidden_proto (cairo_region_contains_rectangle); slim_hidden_proto (cairo_region_contains_point); slim_hidden_proto (cairo_region_translate); slim_hidden_proto (cairo_region_subtract); slim_hidden_proto (cairo_region_subtract_rectangle); slim_hidden_proto (cairo_region_intersect); slim_hidden_proto (cairo_region_intersect_rectangle); slim_hidden_proto (cairo_region_union); slim_hidden_proto (cairo_region_union_rectangle); slim_hidden_proto (cairo_region_xor); slim_hidden_proto (cairo_region_xor_rectangle); slim_hidden_proto (cairo_set_shadow); slim_hidden_proto (cairo_set_shadow_offset); slim_hidden_proto (cairo_set_shadow_rgba); slim_hidden_proto (cairo_set_shadow_rgb); slim_hidden_proto (cairo_set_shadow_blur); slim_hidden_proto (cairo_set_draw_shadow_only); slim_hidden_proto (cairo_shadow_enable_cache); slim_hidden_proto (cairo_set_path_is_inset_shadow_with_spread); #if CAIRO_HAS_PNG_FUNCTIONS slim_hidden_proto (cairo_surface_write_to_png_stream); #endif CAIRO_END_DECLS #include "cairo-mutex-private.h" #include "cairo-fixed-private.h" #include "cairo-wideint-private.h" #include "cairo-malloc-private.h" #include "cairo-hash-private.h" #if HAVE_VALGRIND #include #define VG(x) x cairo_private void _cairo_debug_check_image_surface_is_defined (const cairo_surface_t *surface); #else #define VG(x) #define _cairo_debug_check_image_surface_is_defined(X) #endif cairo_private void _cairo_debug_print_path (FILE *stream, cairo_path_fixed_t *path); cairo_private void _cairo_debug_print_polygon (FILE *stream, cairo_polygon_t *polygon); cairo_private void _cairo_debug_print_traps (FILE *file, const cairo_traps_t *traps); cairo_private void _cairo_debug_print_clip (FILE *stream, const cairo_clip_t *clip); #if 0 #define TRACE(x) fprintf (stderr, "%s: ", __FILE__), fprintf x #define TRACE_(x) x #else #define TRACE(x) #define TRACE_(x) #endif #endif