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/*
* Copyright © 2026 Behdad Esfahbod
*
* 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.
*
* Author(s): Behdad Esfahbod
*/
#ifndef HB_NO_RASTER_SVG
#include "hb.hh"
#include "hb-raster-svg-defs-scan.hh"
#include "hb-raster-svg-clip.hh"
#include "hb-raster-svg-gradient.hh"
static inline bool
hb_raster_svg_process_defs_child_tag (const hb_svg_defs_scan_context_t *ctx,
hb_svg_xml_parser_t &parser,
hb_svg_token_type_t tok)
{
if (parser.tag_name.eq ("linearGradient"))
{
hb_raster_svg_process_gradient_def (ctx->defs, parser, tok, SVG_GRADIENT_LINEAR,
ctx->pfuncs, ctx->paint_data,
ctx->foreground, ctx->face,
ctx->palette);
return true;
}
if (parser.tag_name.eq ("radialGradient"))
{
hb_raster_svg_process_gradient_def (ctx->defs, parser, tok, SVG_GRADIENT_RADIAL,
ctx->pfuncs, ctx->paint_data,
ctx->foreground, ctx->face,
ctx->palette);
return true;
}
if (parser.tag_name.eq ("clipPath"))
{
hb_raster_svg_process_clip_path_def (ctx->defs, parser, tok,
ctx->doc_start, ctx->doc_len,
ctx->svg_accel, ctx->doc_cache);
return true;
}
return false;
}
void
hb_raster_svg_process_defs_element (const hb_svg_defs_scan_context_t *ctx,
hb_svg_xml_parser_t &parser)
{
int depth = 1;
while (depth > 0)
{
hb_svg_token_type_t tok = parser.next ();
if (tok == SVG_TOKEN_EOF) break;
if (tok == SVG_TOKEN_CLOSE_TAG)
{
depth--;
continue;
}
if (tok == SVG_TOKEN_OPEN_TAG || tok == SVG_TOKEN_SELF_CLOSE_TAG)
{
if (!hb_raster_svg_process_defs_child_tag (ctx, parser, tok) &&
tok == SVG_TOKEN_OPEN_TAG)
depth++;
}
}
}
void
hb_raster_svg_collect_defs (const hb_svg_defs_scan_context_t *ctx,
const char *data,
unsigned data_len)
{
hb_svg_xml_parser_t parser (data, data_len);
while (true)
{
hb_svg_token_type_t tok = parser.next ();
if (tok == SVG_TOKEN_EOF) break;
if (tok == SVG_TOKEN_OPEN_TAG || tok == SVG_TOKEN_SELF_CLOSE_TAG)
hb_raster_svg_process_defs_child_tag (ctx, parser, tok);
}
}
#endif /* !HB_NO_RASTER_SVG */