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Attempt to improve sub/sup rendering. Now 2<sup>2<sup>2</sup></sup> is

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rendered as 2^2^2 and mixed sub/sup should be rendered in a better way.
A bit hacky though.
This commit is contained in:
Laurent MONIN 2005-10-19 23:11:27 +02:00 committed by Laurent MONIN
parent 80af673860
commit 7392b8c503
3 changed files with 30 additions and 26 deletions
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2
src/document/html/parser.h
View File

@ -33,6 +33,8 @@ enum format_attr {
AT_SUBSCRIPT = 32,
AT_SUPERSCRIPT = 64,
AT_PREFORMATTED = 128,
AT_UPDATE_SUB = 256,
AT_UPDATE_SUP = 512,
};
struct text_attrib_style {

4
src/document/html/parser/general.c
View File

@ -73,13 +73,13 @@ html_fixed(struct html_context *html_context, unsigned char *a)
void
html_subscript(struct html_context *html_context, unsigned char *a)
{
format.style.attr |= AT_SUBSCRIPT;
format.style.attr |= AT_SUBSCRIPT | AT_UPDATE_SUB;
}
void
html_superscript(struct html_context *html_context, unsigned char *a)
{
format.style.attr |= AT_SUPERSCRIPT;
format.style.attr |= AT_SUPERSCRIPT | AT_UPDATE_SUP;
}
void

50
src/document/html/renderer.c
View File

@ -114,13 +114,13 @@ struct renderer_context {
struct cache_entry *cached;
int g_ctrl_num;
int subscript; /* Count stacked subscripts */
int supscript; /* Count stacked supscripts */
unsigned int empty_format:1;
unsigned int nobreak:1;
unsigned int nosearchable:1;
unsigned int nowrap:1; /* Activated/deactivated by SP_NOWRAP. */
unsigned int did_subscript:1;
unsigned int did_superscript:1;
};
static struct renderer_context renderer_context;
@ -330,15 +330,10 @@ get_format_screen_char(struct html_context *html_context,
static struct screen_char schar_cache;
if (memcmp(&ta_cache, &format.style, sizeof(ta_cache))) {
struct color_pair colors = INIT_COLOR_PAIR(format.style.bg, format.style.fg);
static enum color_mode color_mode;
static enum color_flags color_flags;
color_mode = html_context->options->color_mode;
color_flags = html_context->options->color_flags;
copy_struct(&ta_cache, &format.style);
schar_cache.attr = 0;
if (format.style.attr) {
if (format.style.attr & ~(AT_UPDATE_SUB|AT_UPDATE_SUP)) {
if (format.style.attr & AT_UNDERLINE) {
schar_cache.attr |= SCREEN_ATTR_UNDERLINE;
}
@ -361,33 +356,40 @@ get_format_screen_char(struct html_context *html_context,
schar_cache.attr |= SCREEN_ATTR_UNDERLINE;
}
copy_struct(&ta_cache, &format.style);
set_term_color(&schar_cache, &colors, color_flags, color_mode);
{
struct color_pair colors = INIT_COLOR_PAIR(format.style.bg,
format.style.fg);
set_term_color(&schar_cache, &colors,
html_context->options->color_flags,
html_context->options->color_mode);
}
if (html_context->options->display_subs) {
if (format.style.attr & AT_SUBSCRIPT) {
if (!renderer_context.did_subscript) {
renderer_context.did_subscript = 1;
if (format.style.attr & AT_UPDATE_SUB) {
renderer_context.subscript++;
format.style.attr &= ~AT_UPDATE_SUB;
put_chars(html_context, "[", 1);
}
} else {
if (renderer_context.did_subscript) {
while (renderer_context.subscript) {
renderer_context.subscript--;
put_chars(html_context, "]", 1);
renderer_context.did_subscript = 0;
}
}
}
if (html_context->options->display_sups) {
if (format.style.attr & AT_SUPERSCRIPT) {
if (!renderer_context.did_superscript) {
renderer_context.did_superscript = 1;
if (format.style.attr & AT_UPDATE_SUP) {
renderer_context.supscript++;
format.style.attr &= ~AT_UPDATE_SUP;
put_chars(html_context, "^", 1);
}
} else {
if (renderer_context.did_superscript) {
renderer_context.did_superscript = 0;
}
while (renderer_context.supscript)
renderer_context.supscript--;
}
}
}
@ -1270,7 +1272,7 @@ void
put_chars(struct html_context *html_context, unsigned char *chars, int charslen)
{
enum link_state link_state;
int update_after_subscript = renderer_context.did_subscript;
int update_after_subscript = renderer_context.subscript;
struct part *part;
assert(html_context);
@ -1340,7 +1342,7 @@ put_chars(struct html_context *html_context, unsigned char *chars, int charslen)
* will ``update'' the @link_state. */
if (link_state == LINK_STATE_NEW
&& (is_drawing_subs_or_sups()
|| update_after_subscript != renderer_context.did_subscript)) {
|| update_after_subscript != renderer_context.subscript)) {
link_state = get_link_state(html_context);
}