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authorMatthias Clasen <mclasen@redhat.com>2021-08-29 16:37:02 -0400
committerMatthias Clasen <mclasen@redhat.com>2021-08-31 14:29:56 -0400
commit1b73eedc69bc15941f216bff11817b825adb51d8 (patch)
treed5a3ceeeb45219023e219296200a925061f704f8 /pango
parentfd51b46898ac9c880bb9552c3e301bfef7ac22bd (diff)
downloadpango-1b73eedc69bc15941f216bff11817b825adb51d8.tar.gz
markup: Change <sup> and <sub>
Use the new baseline-shift and font-scale attributes to reimplement <sup> and <sub>. Now they take font metrics into account and nest properly.
Diffstat (limited to 'pango')
-rw-r--r--pango/pango-markup.c22
1 files changed, 4 insertions, 18 deletions
diff --git a/pango/pango-markup.c b/pango/pango-markup.c
index 54c08c67..791e71fd 100644
--- a/pango/pango-markup.c
+++ b/pango/pango-markup.c
@@ -1833,8 +1833,6 @@ s_parse_func (MarkupData *md G_GNUC_UNUSED,
return TRUE;
}
-#define SUPERSUB_RISE 5000
-
static gboolean
sub_parse_func (MarkupData *md G_GNUC_UNUSED,
OpenTag *tag,
@@ -1845,14 +1843,8 @@ sub_parse_func (MarkupData *md G_GNUC_UNUSED,
{
CHECK_NO_ATTRS("sub");
- /* Shrink font, and set a negative rise */
- if (tag)
- {
- tag->scale_level_delta -= 1;
- tag->scale_level -= 1;
- }
-
- add_attribute (tag, pango_attr_rise_new (-SUPERSUB_RISE));
+ add_attribute (tag, pango_attr_font_scale_new (PANGO_FONT_SCALE_SUBSCRIPT));
+ add_attribute (tag, pango_attr_baseline_shift_new (PANGO_BASELINE_SHIFT_SUBSCRIPT));
return TRUE;
}
@@ -1867,14 +1859,8 @@ sup_parse_func (MarkupData *md G_GNUC_UNUSED,
{
CHECK_NO_ATTRS("sup");
- /* Shrink font, and set a positive rise */
- if (tag)
- {
- tag->scale_level_delta -= 1;
- tag->scale_level -= 1;
- }
-
- add_attribute (tag, pango_attr_rise_new (SUPERSUB_RISE));
+ add_attribute (tag, pango_attr_font_scale_new (PANGO_FONT_SCALE_SUPERSCRIPT));
+ add_attribute (tag, pango_attr_baseline_shift_new (PANGO_BASELINE_SHIFT_SUPERSCRIPT));
return TRUE;
}