Coverage Report

Created: 2026-05-16 09:25

next uncovered line (L), next uncovered region (R), next uncovered branch (B)
/work/workdir/UnpackedTarball/harfbuzz/src/hb-paint.hh
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/*
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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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#ifndef HB_PAINT_HH
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#define HB_PAINT_HH
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#include "hb.hh"
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#include "hb-face.hh"
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#include "hb-font.hh"
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#include "hb-geometry.hh"
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#define HB_PAINT_FUNCS_IMPLEMENT_CALLBACKS \
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0
  HB_PAINT_FUNC_IMPLEMENT (push_transform) \
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  HB_PAINT_FUNC_IMPLEMENT (pop_transform) \
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  HB_PAINT_FUNC_IMPLEMENT (color_glyph) \
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  HB_PAINT_FUNC_IMPLEMENT (push_clip_glyph) \
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  HB_PAINT_FUNC_IMPLEMENT (push_clip_rectangle) \
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  HB_PAINT_FUNC_IMPLEMENT (push_clip_path_start) \
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  HB_PAINT_FUNC_IMPLEMENT (push_clip_path_end) \
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  HB_PAINT_FUNC_IMPLEMENT (pop_clip) \
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  HB_PAINT_FUNC_IMPLEMENT (color) \
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  HB_PAINT_FUNC_IMPLEMENT (image) \
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  HB_PAINT_FUNC_IMPLEMENT (linear_gradient) \
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  HB_PAINT_FUNC_IMPLEMENT (radial_gradient) \
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  HB_PAINT_FUNC_IMPLEMENT (sweep_gradient) \
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  HB_PAINT_FUNC_IMPLEMENT (push_group) \
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  HB_PAINT_FUNC_IMPLEMENT (push_group_for) \
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  HB_PAINT_FUNC_IMPLEMENT (pop_group) \
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  HB_PAINT_FUNC_IMPLEMENT (custom_palette_color) \
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  /* ^--- Add new callbacks here */
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struct hb_paint_funcs_t
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{
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  hb_object_header_t header;
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  struct {
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#define HB_PAINT_FUNC_IMPLEMENT(name) hb_paint_##name##_func_t name;
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    HB_PAINT_FUNCS_IMPLEMENT_CALLBACKS
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#undef HB_PAINT_FUNC_IMPLEMENT
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  } func;
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  struct {
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#define HB_PAINT_FUNC_IMPLEMENT(name) void *name;
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    HB_PAINT_FUNCS_IMPLEMENT_CALLBACKS
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#undef HB_PAINT_FUNC_IMPLEMENT
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  } *user_data;
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  struct {
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#define HB_PAINT_FUNC_IMPLEMENT(name) hb_destroy_func_t name;
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    HB_PAINT_FUNCS_IMPLEMENT_CALLBACKS
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#undef HB_PAINT_FUNC_IMPLEMENT
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  } *destroy;
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  void push_transform (void *paint_data,
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                       float xx, float yx,
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                       float xy, float yy,
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                       float dx, float dy)
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0
  {
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    // Handle -0.f to avoid -0.f == 0.f in the transform matrix.
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    if (dx == -0.f) dx = 0.f;
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    if (dy == -0.f) dy = 0.f;
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    func.push_transform (this, paint_data,
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                         xx, yx, xy, yy, dx, dy,
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                         !user_data ? nullptr : user_data->push_transform); }
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  void pop_transform (void *paint_data)
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  { func.pop_transform (this, paint_data,
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                        !user_data ? nullptr : user_data->pop_transform); }
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  bool color_glyph (void *paint_data,
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                    hb_codepoint_t glyph,
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                    hb_font_t *font)
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  { return func.color_glyph (this, paint_data,
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                             glyph,
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                             font,
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                             !user_data ? nullptr : user_data->push_clip_glyph); }
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  void push_clip_glyph (void *paint_data,
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                        hb_codepoint_t glyph,
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                        hb_font_t *font)
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  { func.push_clip_glyph (this, paint_data,
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                          glyph,
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                          font,
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                          !user_data ? nullptr : user_data->push_clip_glyph); }
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  void push_clip_rectangle (void *paint_data,
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                           float xmin, float ymin, float xmax, float ymax)
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  { func.push_clip_rectangle (this, paint_data,
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                              xmin, ymin, xmax, ymax,
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                              !user_data ? nullptr : user_data->push_clip_rectangle); }
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  hb_draw_funcs_t *push_clip_path_start (void *paint_data,
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                                         void **draw_data)
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  { return func.push_clip_path_start (this, paint_data, draw_data,
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                                      !user_data ? nullptr : user_data->push_clip_path_start); }
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  void push_clip_path_end (void *paint_data)
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  { func.push_clip_path_end (this, paint_data,
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                             !user_data ? nullptr : user_data->push_clip_path_end); }
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  void pop_clip (void *paint_data)
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  { func.pop_clip (this, paint_data,
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                   !user_data ? nullptr : user_data->pop_clip); }
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  void color (void *paint_data,
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              hb_bool_t is_foreground,
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              hb_color_t color)
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  { func.color (this, paint_data,
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                is_foreground, color,
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                !user_data ? nullptr : user_data->color); }
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  bool image (void *paint_data,
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              hb_blob_t *image,
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              unsigned width, unsigned height,
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              hb_tag_t format,
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              float slant,
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              hb_glyph_extents_t *extents)
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  { return func.image (this, paint_data,
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                       image, width, height, format, slant, extents,
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                       !user_data ? nullptr : user_data->image); }
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  void linear_gradient (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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  { func.linear_gradient (this, paint_data,
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                          color_line, x0, y0, x1, y1, x2, y2,
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                          !user_data ? nullptr : user_data->linear_gradient); }
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  void radial_gradient (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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  { func.radial_gradient (this, paint_data,
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                          color_line, x0, y0, r0, x1, y1, r1,
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                          !user_data ? nullptr : user_data->radial_gradient); }
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  void sweep_gradient (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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  { func.sweep_gradient (this, paint_data,
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                         color_line, x0, y0, start_angle, end_angle,
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                         !user_data ? nullptr : user_data->sweep_gradient); }
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  void push_group (void *paint_data)
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  { func.push_group (this, paint_data,
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                     !user_data ? nullptr : user_data->push_group); }
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  void push_group_for (void *paint_data,
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                       hb_paint_composite_mode_t mode)
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  { func.push_group_for (this, paint_data,
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                         mode,
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                         !user_data ? nullptr : user_data->push_group_for); }
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  void pop_group (void *paint_data,
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                  hb_paint_composite_mode_t mode)
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  { func.pop_group (this, paint_data,
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                    mode,
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                    !user_data ? nullptr : user_data->pop_group); }
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  bool custom_palette_color (void *paint_data,
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                             unsigned int color_index,
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                             hb_color_t *color)
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  { return func.custom_palette_color (this, paint_data,
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                                      color_index,
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                                      color,
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                                      !user_data ? nullptr : user_data->custom_palette_color); }
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  /* Internal specializations. */
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  void push_font_transform (void *paint_data,
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                            const hb_font_t *font)
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  {
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    float upem = font->face->get_upem ();
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    int xscale = font->x_scale, yscale = font->y_scale;
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    push_transform (paint_data,
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        xscale/upem, 0,
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        0, yscale/upem,
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        0, 0);
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  }
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  void push_inverse_font_transform (void *paint_data,
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                                    const hb_font_t *font)
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  {
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    float upem = font->face->get_upem ();
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    int xscale = font->x_scale ? font->x_scale : upem;
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    int yscale = font->y_scale ? font->y_scale : upem;
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    push_transform (paint_data,
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        upem/xscale, 0,
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        0, upem/yscale,
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        0, 0);
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  }
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  void push_transform (void *paint_data, hb_transform_t<float> t)
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  {
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    push_transform (paint_data, t.xx, t.yx, t.xy, t.yy, t.x0, t.y0);
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  }
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  void push_translate (void *paint_data,
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                       float dx, float dy)
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  {
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    push_transform (paint_data,
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        hb_transform_t<float>::translation (dx, dy));
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  }
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  void push_scale (void *paint_data,
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                   float sx, float sy)
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  {
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    push_transform (paint_data,
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        hb_transform_t<float>::scaling (sx, sy));
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  }
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  void push_scale_around_center (void *paint_data,
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         float sx, float sy,
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         float cx, float cy)
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  {
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    push_transform (paint_data,
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        hb_transform_t<float>::scaling_around_center (sx, sy, cx, cy));
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  }
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  void push_rotate (void *paint_data,
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                    float a)
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  {
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    push_transform (paint_data,
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        hb_transform_t<float>::rotation (a * HB_PI));
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  }
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  void push_rotate_around_center (void *paint_data,
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          float a,
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          float cx, float cy)
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  {
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    push_transform (paint_data,
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        hb_transform_t<float>::rotation_around_center (a * HB_PI, cx, cy));
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  }
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  void push_skew (void *paint_data,
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                  float sx, float sy)
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  {
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    push_transform (paint_data,
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        hb_transform_t<float>::skewing (-sx * HB_PI, sy * HB_PI));
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  }
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  void push_skew_around_center (void *paint_data,
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        float sx, float sy,
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        float cx, float cy)
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  {
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    push_transform (paint_data,
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        hb_transform_t<float>::skewing_around_center (-sx * HB_PI, sy * HB_PI, cx, cy));
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  }
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};
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DECLARE_NULL_INSTANCE (hb_paint_funcs_t);
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/* Linearly interpolate between two hb_color_t values, component-wise,
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 * in byte-channel space with rounding. */
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static inline hb_color_t
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hb_color_lerp (hb_color_t c0, hb_color_t c1, float t)
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0
{
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0
  auto lerp = [&] (unsigned shift) -> unsigned {
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0
    unsigned v0 = (c0 >> shift) & 0xFF;
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    unsigned v1 = (c1 >> shift) & 0xFF;
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    return (unsigned) (v0 + t * ((float) v1 - (float) v0) + 0.5f);
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  };
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  return HB_COLOR (lerp (0), lerp (8), lerp (16), lerp (24));
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0
}
Unexecuted instantiation: hb-font.cc:hb_color_lerp(unsigned int, unsigned int, float)
Unexecuted instantiation: hb-ot-color.cc:hb_color_lerp(unsigned int, unsigned int, float)
Unexecuted instantiation: hb-ot-face.cc:hb_color_lerp(unsigned int, unsigned int, float)
Unexecuted instantiation: hb-ot-font.cc:hb_color_lerp(unsigned int, unsigned int, float)
Unexecuted instantiation: VARC.cc:hb_color_lerp(unsigned int, unsigned int, float)
Unexecuted instantiation: hb-static.cc:hb_color_lerp(unsigned int, unsigned int, float)
Unexecuted instantiation: hb-paint.cc:hb_color_lerp(unsigned int, unsigned int, float)
Unexecuted instantiation: hb-ot-cff1-table.cc:hb_color_lerp(unsigned int, unsigned int, float)
Unexecuted instantiation: hb-ot-cff2-table.cc:hb_color_lerp(unsigned int, unsigned int, float)
Unexecuted instantiation: hb-subset-plan.cc:hb_color_lerp(unsigned int, unsigned int, float)
Unexecuted instantiation: hb-subset-plan-var.cc:hb_color_lerp(unsigned int, unsigned int, float)
Unexecuted instantiation: hb-subset-table-cff.cc:hb_color_lerp(unsigned int, unsigned int, float)
Unexecuted instantiation: hb-subset-table-color.cc:hb_color_lerp(unsigned int, unsigned int, float)
Unexecuted instantiation: hb-subset-table-other.cc:hb_color_lerp(unsigned int, unsigned int, float)
Unexecuted instantiation: hb-subset-cff1.cc:hb_color_lerp(unsigned int, unsigned int, float)
Unexecuted instantiation: hb-subset-cff2.cc:hb_color_lerp(unsigned int, unsigned int, float)
Unexecuted instantiation: hb-subset-cff-common.cc:hb_color_lerp(unsigned int, unsigned int, float)
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#endif /* HB_PAINT_HH */