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authorMatthias Clasen <mclasen@redhat.com>2021-11-14 22:46:03 -0500
committerMatthias Clasen <mclasen@redhat.com>2021-11-15 08:38:45 -0500
commit8d91031a5d55479ce2a430017a2eebfbc2f231c7 (patch)
tree1d4eb7987bf3d67f5a32b4c52ca776cf174614a0 /pango/pango-layout.c
parentff08cc43da46b5ea339a2c700fe669bed2ddc7b9 (diff)
downloadpango-8d91031a5d55479ce2a430017a2eebfbc2f231c7.tar.gz
More tweaks, and comments
Diffstat (limited to 'pango/pango-layout.c')
-rw-r--r--pango/pango-layout.c37
1 files changed, 22 insertions, 15 deletions
diff --git a/pango/pango-layout.c b/pango/pango-layout.c
index f0795a62..471cbb64 100644
--- a/pango/pango-layout.c
+++ b/pango/pango-layout.c
@@ -3956,15 +3956,16 @@ process_item (PangoLayout *layout,
/* We don't want to walk the entire item if we can help it, but
* we need to keep going at least until we've found a breakpoint
- * that 'works' (as in, doesn't overflow the budget we have),
- * and there is no hope of finding a better one.
+ * that 'works' (as in, it doesn't overflow the budget we have,
+ * or there is no hope of finding a better one).
*
* We rely on the fact that MIN(width + extra_width, width) is
* monotonically increasing.
*/
if (MIN (width + extra_width, width) > state->remaining_width &&
- break_width + break_extra_width <= state->remaining_width &&
- break_num_chars < item->num_chars)
+ break_num_chars < item->num_chars &&
+ (break_width + break_extra_width <= state->remaining_width ||
+ MIN (width + extra_width, width) > break_width + break_extra_width))
{
break;
}
@@ -3975,8 +3976,10 @@ process_item (PangoLayout *layout,
(num_chars > 0 || line->runs))
{
/* If we had a breakpoint already, we only want to replace it with a better one. */
- if (break_num_chars == item->num_chars ||
- width + extra_width <= MAX (break_width + break_extra_width, state->remaining_width))
+ if (width + extra_width <= state->remaining_width ||
+ width + extra_width < break_width + break_extra_width ||
+ (width + extra_width == break_width + break_extra_width &&
+ num_chars > break_num_chars))
{
break_num_chars = num_chars;
break_width = width;
@@ -4028,6 +4031,8 @@ process_item (PangoLayout *layout,
if (break_needs_hyphen (layout, state, break_num_chars))
new_item->analysis.flags |= PANGO_ANALYSIS_FLAG_NEED_HYPHEN;
+ else
+ new_item->analysis.flags &= ~PANGO_ANALYSIS_FLAG_NEED_HYPHEN;
/* Add the width back, to the line, reshape, subtract the new width */
state->remaining_width = remaining;
@@ -4035,23 +4040,25 @@ process_item (PangoLayout *layout,
break_width = pango_glyph_string_get_width (((PangoGlyphItem *)(line->runs->data))->glyphs);
- if (state->start_offset + break_num_chars > 0 &&
- layout->log_attrs[state->start_offset + break_num_chars - 1].is_white)
- break_width -= state->log_widths[state->log_widths_offset + break_num_chars - 1];
+ /* After the shaping, break_width includes a possible hyphen.
+ * We subtract break_extra_width to account for that.
+ */
+ if (new_item->analysis.flags & PANGO_ANALYSIS_FLAG_NEED_HYPHEN)
+ break_width -= break_extra_width;
- if (break_width > state->remaining_width &&
+ if (break_width + break_extra_width > state->remaining_width &&
!break_disabled[break_num_chars])
{
- /* Unsplit the item, disable the breakpoint, try again */
-
+ /* Unsplit the item, disable the breakpoint, try find a better one.
+ *
+ * If we can't find a different breakpoint that works better, we'll
+ * end up here again, with break_disabled being set, and take the break
+ */
uninsert_run (line);
pango_item_free (new_item);
pango_item_unsplit (item, length, break_num_chars);
break_disabled[break_num_chars] = TRUE;
- width = orig_width;
- break_width = width;
- break_num_chars = item->num_chars;
goto retry_break;
}