368 lines
14 KiB
C
368 lines
14 KiB
C
/*
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* Copyright © 2022 Matthias Clasen
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*/
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#if !defined(HB_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR)
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#error "Include <hb.h> instead."
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#endif
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#ifndef HB_PAINT_H
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#define HB_PAINT_H
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#include "hb.h"
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HB_BEGIN_DECLS
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typedef struct hb_paint_funcs_t hb_paint_funcs_t;
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HB_EXTERN hb_paint_funcs_t *
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hb_paint_funcs_create ();
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HB_EXTERN hb_paint_funcs_t *
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hb_paint_funcs_reference (hb_paint_funcs_t *funcs);
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HB_EXTERN void
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hb_paint_funcs_destroy (hb_paint_funcs_t *funcs);
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HB_EXTERN void
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hb_paint_funcs_make_immutable (hb_paint_funcs_t *funcs);
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HB_EXTERN hb_bool_t
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hb_paint_funcs_is_immutable (hb_paint_funcs_t *funcs);
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typedef void (*hb_paint_push_transform_func_t) (hb_paint_funcs_t *funcs,
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void *paint_data,
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float xx, float xy,
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float yx, float yy,
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float x0, float y0,
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void *user_data);
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typedef void (*hb_paint_pop_transform_func_t) (hb_paint_funcs_t *funcs,
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void *paint_data,
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void *user_data);
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typedef void (*hb_paint_push_clip_glyph_func_t) (hb_paint_funcs_t *funcs,
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void *paint_data,
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hb_codepoint_t glyph,
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void *user_data);
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typedef void (*hb_paint_push_clip_rect_func_t) (hb_paint_funcs_t *funcs,
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void *paint_data,
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float xmin, float ymin,
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float xmax, float ymax,
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void *user_data);
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typedef void (*hb_paint_pop_clip_func_t) (hb_paint_funcs_t *funcs,
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void *paint_data,
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void *user_data);
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typedef void (*hb_paint_solid_func_t) (hb_paint_funcs_t *funcs,
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void *paint_data,
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unsigned int color_index,
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float alpha,
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void *user_data);
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typedef struct hb_color_line_t hb_color_line_t;
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typedef struct {
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float offset;
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unsigned int color_index;
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} hb_color_stop_t;
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HB_EXTERN unsigned int
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hb_color_line_get_color_stops (hb_color_line_t color_line,
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unsigned int start,
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unsigned int count,
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hb_color_stop_t *color_stops);
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typedef enum {
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HB_PAINT_EXTEND_PAD,
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HB_PAINT_EXTEND_REPEAT,
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HB_PAINT_EXTEND_REFLECT
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} hb_paint_extend_t;
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HB_EXTERN hb_paint_extend_t
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hb_color_line_get_extend (hb_color_line_t *color_line);
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typedef void (*hb_paint_linear_gradient_func_t) (hb_paint_funcs_t *funcs,
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void *paint_data,
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hb_color_line_t *color_line,
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float x0, float y0,
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float x1, float y1,
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float x2, float y2,
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void *user_data);
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typedef void (*hb_paint_radial_gradient_func_t) (hb_paint_funcs_t *funcs,
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void *paint_data,
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hb_color_line_t *color_line,
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float x0, float y0, float r0,
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float x1, float y1, float r1,
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void *user_data);
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typedef void (*hb_paint_sweep_gradient_func_t) (hb_paint_funcs_t *funcs,
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void *paint_data,
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hb_color_line_t *color_line,
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float x0, float y0,
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float start_angle,
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float end_angle,
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void *user_data);
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typedef enum {
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HB_PAINT_COMPOSITE_MODE_CLEAR,
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HB_PAINT_COMPOSITE_MODE_SRC,
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HB_PAINT_COMPOSITE_MODE_DEST,
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HB_PAINT_COMPOSITE_MODE_SRC_OVER,
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HB_PAINT_COMPOSITE_MODE_DEST_OVER,
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HB_PAINT_COMPOSITE_MODE_SRC_IN,
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HB_PAINT_COMPOSITE_MODE_DEST_IN,
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HB_PAINT_COMPOSITE_MODE_SRC_OUT,
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HB_PAINT_COMPOSITE_MODE_DEST_OUT,
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HB_PAINT_COMPOSITE_MODE_SRC_ATOP,
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HB_PAINT_COMPOSITE_MODE_DEST_ATOP,
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HB_PAINT_COMPOSITE_MODE_XOR,
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HB_PAINT_COMPOSITE_MODE_PLUS,
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HB_PAINT_COMPOSITE_MODE_SCREEN,
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HB_PAINT_COMPOSITE_MODE_OVERLAY,
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HB_PAINT_COMPOSITE_MODE_DARKEN,
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HB_PAINT_COMPOSITE_MODE_LIGHTEN,
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HB_PAINT_COMPOSITE_MODE_COLOR_DODGE,
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HB_PAINT_COMPOSITE_MODE_COLOR_BURN,
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HB_PAINT_COMPOSITE_MODE_HARD_LIGHT,
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HB_PAINT_COMPOSITE_MODE_SOFT_LIGHT,
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HB_PAINT_COMPOSITE_MODE_DIFFERENCE,
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HB_PAINT_COMPOSITE_MODE_EXCLUSION,
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HB_PAINT_COMPOSITE_MODE_MULTIPLY,
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HB_PAINT_COMPOSITE_MODE_HSL_HUE,
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HB_PAINT_COMPOSITE_MODE_HSL_SATURATION,
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HB_PAINT_COMPOSITE_MODE_HSL_COLOR,
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HB_PAINT_COMPOSITE_MODE_HSL_LUMINOSITY,
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} hb_paint_composite_mode_t;
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typedef void (*hb_paint_push_group_func_t) (hb_paint_funcs_t *funcs,
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void *paint_data,
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void *user_data);
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typedef void (*hb_paint_pop_group_func_t) (hb_paint_funcs_t *funcs,
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void *paint_data,
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hb_paint_composite_mode_t mode,
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void *user_data);
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/**
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* hb_paint_funcs_set_push_transform_func:
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* @funcs:
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* @func: (closure user_data) (destroy destroy) (scope notified):
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* @user_data:
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* @destroy: (nullable)
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*/
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HB_EXTERN void
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hb_paint_funcs_set_push_transform_func (hb_paint_funcs_t *funcs,
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hb_paint_push_transform_func_t func,
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void *user_data,
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hb_destroy_func_t destroy);
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/**
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* hb_paint_funcs_set_pop_transform_func:
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* @funcs:
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* @func: (closure user_data) (destroy destroy) (scope notified):
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* @user_data:
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* @destroy: (nullable)
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*/
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HB_EXTERN void
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hb_paint_funcs_set_pop_transform_func (hb_paint_funcs_t *funcs,
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hb_paint_pop_transform_func_t func,
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void *user_data,
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hb_destroy_func_t destroy);
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/**
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* hb_paint_funcs_set_push_clip_glyph_func:
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* @funcs:
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* @func: (closure user_data) (destroy destroy) (scope notified):
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* @user_data:
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* @destroy: (nullable)
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*/
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HB_EXTERN void
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hb_paint_funcs_set_push_clip_glyph_func (hb_paint_funcs_t *funcs,
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hb_paint_push_clip_glyph_func_t func,
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void *user_data,
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hb_destroy_func_t destroy);
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/**
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* hb_paint_funcs_set_push_clip_rect_func:
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* @funcs:
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* @func: (closure user_data) (destroy destroy) (scope notified):
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* @user_data:
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* @destroy: (nullable)
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*/
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HB_EXTERN void
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hb_paint_funcs_set_push_clip_rect_func (hb_paint_funcs_t *funcs,
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hb_paint_push_clip_rect_func_t func,
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void *user_data,
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hb_destroy_func_t destroy);
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/**
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* hb_paint_funcs_set_pop_clip_func:
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* @funcs:
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* @func: (closure user_data) (destroy destroy) (scope notified):
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* @user_data:
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* @destroy: (nullable)
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*/
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HB_EXTERN void
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hb_paint_funcs_set_pop_clip_func (hb_paint_funcs_t *funcs,
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hb_paint_pop_clip_func_t func,
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void *user_data,
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hb_destroy_func_t destroy);
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/**
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* hb_paint_funcs_set_solid_func:
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* @funcs:
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* @func: (closure user_data) (destroy destroy) (scope notified):
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* @user_data:
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* @destroy: (nullable)
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*/
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HB_EXTERN void
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hb_paint_funcs_set_solid_func (hb_paint_funcs_t *funcs,
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hb_paint_solid_func_t func,
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void *user_data,
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hb_destroy_func_t destroy);
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/**
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* hb_paint_funcs_set_linear_gradient_func:
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* @funcs:
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* @func: (closure user_data) (destroy destroy) (scope notified):
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* @user_data:
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* @destroy: (nullable)
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*/
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HB_EXTERN void
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hb_paint_funcs_set_linear_gradient_func (hb_paint_funcs_t *funcs,
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hb_paint_linear_gradient_func_t func,
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void *user_data,
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hb_destroy_func_t destroy);
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/**
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* hb_paint_funcs_set_radial_gradient_func:
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* @funcs:
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* @func: (closure user_data) (destroy destroy) (scope notified):
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* @user_data:
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* @destroy: (nullable)
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*/
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HB_EXTERN void
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hb_paint_funcs_set_radial_gradient_func (hb_paint_funcs_t *funcs,
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hb_paint_radial_gradient_func_t func,
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void *user_data,
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hb_destroy_func_t destroy);
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/**
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* hb_paint_funcs_set_sweep_gradient_func:
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* @funcs:
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* @func: (closure user_data) (destroy destroy) (scope notified):
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* @user_data:
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* @destroy: (nullable)
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*/
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HB_EXTERN void
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hb_paint_funcs_set_sweep_gradient_func (hb_paint_funcs_t *funcs,
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hb_paint_sweep_gradient_func_t func,
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void *user_data,
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hb_destroy_func_t destroy);
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/**
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* hb_paint_funcs_set_push_group_func:
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* @funcs:
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* @func: (closure user_data) (destroy destroy) (scope notified):
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* @user_data:
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* @destroy: (nullable)
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*/
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HB_EXTERN void
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hb_paint_funcs_set_push_group_func (hb_paint_funcs_t *funcs,
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hb_paint_push_group_func_t func,
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void *user_data,
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hb_destroy_func_t destroy);
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/**
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* hb_paint_funcs_set_pop_group_func:
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* @funcs:
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* @func: (closure user_data) (destroy destroy) (scope notified):
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* @user_data:
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* @destroy: (nullable)
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*/
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HB_EXTERN void
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hb_paint_funcs_set_pop_group_func (hb_paint_funcs_t *funcs,
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hb_paint_pop_group_func_t func,
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void *user_data,
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hb_destroy_func_t destroy);
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HB_EXTERN void
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hb_paint_push_transform (hb_paint_funcs_t *funcs, void *paint_data,
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float xx, float xy,
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float yx, float yy,
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float x0, float y0);
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HB_EXTERN void
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hb_paint_pop_transform (hb_paint_funcs_t *funcs, void *paint_data);
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HB_EXTERN void
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hb_paint_push_clip_glyph (hb_paint_funcs_t *funcs, void *paint_data,
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hb_codepoint_t glyph);
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HB_EXTERN void
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hb_paint_push_clip_rect (hb_paint_funcs_t *funcs, void *paint_data,
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float xmin, float ymin, float xmax, float ymax);
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HB_EXTERN void
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hb_paint_pop_clip (hb_paint_funcs_t *funcs, void *paint_data);
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HB_EXTERN void
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hb_paint_solid (hb_paint_funcs_t *funcs, void *paint_data,
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unsigned int color_index,
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float alpha);
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HB_EXTERN void
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hb_paint_linear_gradient (hb_paint_funcs_t *funcs, void *paint_data,
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hb_color_line_t *color_line,
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float x0, float y0,
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float x1, float y1,
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float x2, float y2);
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HB_EXTERN void
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hb_paint_radial_gradient (hb_paint_funcs_t *funcs, void *paint_data,
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hb_color_line_t *color_line,
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float x0, float y0, float r0,
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float x1, float y1, float r1);
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HB_EXTERN void
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hb_paint_sweep_gradient (hb_paint_funcs_t *funcs, void *paint_data,
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hb_color_line_t *color_line,
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float x0, float y0,
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float start_angle, float end_angle);
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HB_EXTERN void
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hb_paint_push_group (hb_paint_funcs_t *funcs, void *paint_data);
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HB_EXTERN void
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hb_paint_pop_group (hb_paint_funcs_t *funcs, void *paint_data,
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hb_paint_composite_mode_t mode);
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HB_END_DECLS
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#endif /* HB_PAINT_H */
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