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/*
* Copyright © 2019-2020 Ebrahim Byagowi
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
#include "hb.hh"
#ifndef HB_NO_DRAW
#ifdef HB_EXPERIMENTAL_API
#include "hb-draw.hh"
#include "hb-ot.h"
#include "hb-ot-glyf-table.hh"
#include "hb-ot-cff1-table.hh"
#include "hb-ot-cff2-table.hh"
/**
* hb_draw_funcs_set_move_to_func:
* @funcs: draw functions object
* @move_to: move-to callback
*
* Sets move-to callback to the draw functions object.
*
* Since: EXPERIMENTAL
**/
void
hb_draw_funcs_set_move_to_func (hb_draw_funcs_t *funcs,
hb_draw_move_to_func_t move_to)
{
if (unlikely (hb_object_is_immutable (funcs))) return;
funcs->move_to = move_to;
}
/**
* hb_draw_funcs_set_line_to_func:
* @funcs: draw functions object
* @line_to: line-to callback
*
* Sets line-to callback to the draw functions object.
*
* Since: EXPERIMENTAL
**/
void
hb_draw_funcs_set_line_to_func (hb_draw_funcs_t *funcs,
hb_draw_line_to_func_t line_to)
{
if (unlikely (hb_object_is_immutable (funcs))) return;
funcs->line_to = line_to;
}
/**
* hb_draw_funcs_set_quadratic_to_func:
* @funcs: draw functions object
* @move_to: quadratic-to callback
*
* Sets quadratic-to callback to the draw functions object.
*
* Since: EXPERIMENTAL
**/
void
hb_draw_funcs_set_quadratic_to_func (hb_draw_funcs_t *funcs,
hb_draw_quadratic_to_func_t quadratic_to)
{
if (unlikely (hb_object_is_immutable (funcs))) return;
funcs->quadratic_to = quadratic_to;
funcs->is_quadratic_to_set = true;
}
/**
* hb_draw_funcs_set_cubic_to_func:
* @funcs: draw functions
* @cubic_to: cubic-to callback
*
* Sets cubic-to callback to the draw functions object.
*
* Since: EXPERIMENTAL
**/
void
hb_draw_funcs_set_cubic_to_func (hb_draw_funcs_t *funcs,
hb_draw_cubic_to_func_t cubic_to)
{
if (unlikely (hb_object_is_immutable (funcs))) return;
funcs->cubic_to = cubic_to;
}
/**
* hb_draw_funcs_set_close_path_func:
* @funcs: draw functions object
* @close_path: close-path callback
*
* Sets close-path callback to the draw functions object.
*
* Since: EXPERIMENTAL
**/
void
hb_draw_funcs_set_close_path_func (hb_draw_funcs_t *funcs,
hb_draw_close_path_func_t close_path)
{
if (unlikely (hb_object_is_immutable (funcs))) return;
funcs->close_path = close_path;
}
static void
_move_to_nil (hb_position_t to_x HB_UNUSED, hb_position_t to_y HB_UNUSED, void *user_data HB_UNUSED) {}
static void
_line_to_nil (hb_position_t to_x HB_UNUSED, hb_position_t to_y HB_UNUSED, void *user_data HB_UNUSED) {}
static void
_quadratic_to_nil (hb_position_t control_x HB_UNUSED, hb_position_t control_y HB_UNUSED,
hb_position_t to_x HB_UNUSED, hb_position_t to_y HB_UNUSED,
void *user_data HB_UNUSED) {}
static void
_cubic_to_nil (hb_position_t control1_x HB_UNUSED, hb_position_t control1_y HB_UNUSED,
hb_position_t control2_x HB_UNUSED, hb_position_t control2_y HB_UNUSED,
hb_position_t to_x HB_UNUSED, hb_position_t to_y HB_UNUSED,
void *user_data HB_UNUSED) {}
static void
_close_path_nil (void *user_data HB_UNUSED) {}
/**
* hb_draw_funcs_create:
*
* Creates a new draw callbacks object.
*
* Since: EXPERIMENTAL
**/
hb_draw_funcs_t *
hb_draw_funcs_create ()
{
hb_draw_funcs_t *funcs;
if (unlikely (!(funcs = hb_object_create<hb_draw_funcs_t> ())))
return const_cast<hb_draw_funcs_t *> (&Null (hb_draw_funcs_t));
funcs->move_to = (hb_draw_move_to_func_t) _move_to_nil;
funcs->line_to = (hb_draw_line_to_func_t) _line_to_nil;
funcs->quadratic_to = (hb_draw_quadratic_to_func_t) _quadratic_to_nil;
funcs->is_quadratic_to_set = false;
funcs->cubic_to = (hb_draw_cubic_to_func_t) _cubic_to_nil;
funcs->close_path = (hb_draw_close_path_func_t) _close_path_nil;
return funcs;
}
/**
* hb_draw_funcs_reference:
* @funcs: draw functions
*
* Add to callbacks object refcount.
*
* Returns: The same object.
* Since: EXPERIMENTAL
**/
hb_draw_funcs_t *
hb_draw_funcs_reference (hb_draw_funcs_t *funcs)
{
return hb_object_reference (funcs);
}
/**
* hb_draw_funcs_destroy:
* @funcs: draw functions
*
* Decreases refcount of callbacks object and deletes the object if it reaches
* to zero.
*
* Since: EXPERIMENTAL
**/
void
hb_draw_funcs_destroy (hb_draw_funcs_t *funcs)
{
if (!hb_object_destroy (funcs)) return;
free (funcs);
}
/**
* hb_draw_funcs_make_immutable:
* @funcs: draw functions
*
* Makes funcs object immutable.
*
* Since: EXPERIMENTAL
**/
void
hb_draw_funcs_make_immutable (hb_draw_funcs_t *funcs)
{
if (hb_object_is_immutable (funcs))
return;
hb_object_make_immutable (funcs);
}
/**
* hb_draw_funcs_is_immutable:
* @funcs: draw functions
*
* Checks whether funcs is immutable.
*
* Returns: If is immutable.
* Since: EXPERIMENTAL
**/
hb_bool_t
hb_draw_funcs_is_immutable (hb_draw_funcs_t *funcs)
{
return hb_object_is_immutable (funcs);
}
/**
* hb_font_draw_glyph:
* @font: a font object
* @glyph: a glyph id
* @funcs: draw callbacks object
* @user_data: parameter you like be passed to the callbacks when are called
*
* Draw a glyph.
*
* Returns: Whether the font had the glyph and the operation completed successfully.
* Since: EXPERIMENTAL
**/
hb_bool_t
hb_font_draw_glyph (hb_font_t *font, hb_codepoint_t glyph,
const hb_draw_funcs_t *funcs,
void *user_data)
{
if (unlikely (funcs == &Null (hb_draw_funcs_t) ||
glyph >= font->face->get_num_glyphs ()))
return false;
draw_helper_t draw_helper (funcs, user_data);
if (font->face->table.glyf->get_path (font, glyph, draw_helper)) return true;
#ifndef HB_NO_CFF
if (font->face->table.cff1->get_path (font, glyph, draw_helper)) return true;
if (font->face->table.cff2->get_path (font, glyph, draw_helper)) return true;
#endif
return false;
}
#endif
#endif
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