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[img] introduce elsix attribute for img

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elsix is base64 encoded sixel image. It does not
work with tables yet. elsix must be filled by user somehow.
For example in pre_format hook.
This commit is contained in:
Witold Filipczyk 2025-01-19 14:19:14 +01:00
parent adf52238b1
commit c355d5e870
1 changed files with 50 additions and 2 deletions
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52
src/document/html/parser/link.c
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@ -29,6 +29,7 @@
#include "config/options.h"
#include "config/kbdbind.h"
#include "document/html/frames.h"
#include "document/html/parser/general.h"
#include "document/html/parser/link.h"
#include "document/html/parser/parse.h"
#include "document/html/parser/stack.h"
@ -37,6 +38,10 @@
#include "globhist/globhist.h"
#include "mime/mime.h"
#include "protocol/uri.h"
#ifdef CONFIG_LIBSIXEL
#include "terminal/sixel.h"
#endif
#include "util/base64.h"
#include "util/conv.h"
#include "util/error.h"
#include "util/memdebug.h"
@ -222,6 +227,46 @@ put_image_label(char *a, char *label,
elformat.style.attr = saved_attr;
}
static void
html_img_sixel(struct html_context *html_context, char *a,
char *html, char *eof, char **end)
{
#ifdef CONFIG_LIBSIXEL
if (!html_context->options->sixel || !html_context->part->document || html_context->table_level) {
return;
}
char *elsix = get_attr_val(a, "elsix", html_context->doc_cp);
if (!elsix) {
return;
}
struct string pixels;
if (!init_string(&pixels)) {
mem_free(elsix);
return;
}
int datalen;
unsigned char *data = base64_decode_bin((const unsigned char *)elsix, strlen(elsix), &datalen);
mem_free(elsix);
if (!data) {
done_string(&pixels);
return;
}
add_bytes_to_string(&pixels, (const char *)data, datalen);
mem_free(data);
struct document *document = html_context->document;
html_linebrk(html_context, a, html, eof, end);
int lineno = html_context->part->cy + html_context->part->box.y;
int how_many = add_image_to_document(document, &pixels, lineno) + 1;
done_string(&pixels);
ln_break(html_context, how_many);
#endif
}
static void
html_img_do(char *a, char *object_src,
struct html_context *html_context)
@ -258,7 +303,7 @@ html_img_do(char *a, char *object_src,
elformat.form = NULL;
elformat.style.attr |= AT_BOLD;
usemap = 1;
}
}
ismap = elformat.link
&& has_attr(a, "ismap", html_context->doc_cp)
@ -365,8 +410,11 @@ html_img_do(char *a, char *object_src,
void
html_img(struct html_context *html_context, char *a,
char *xxx3, char *xxx4, char **xxx5)
char *html, char *eof, char **end)
{
#ifdef CONFIG_LIBSIXEL
html_img_sixel(html_context, a, html, eof, end);
#endif
html_img_do(a, NULL, html_context);
}