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macOS: Fix a regression in the previous release that caused ligatures to be not be centered horizontally

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Fixes #2591
This commit is contained in:
Kovid Goyal 2020-04-27 16:17:05 +05:30
parent 7692cb5c3d
commit ad1ff455a0
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GPG Key ID: 06BC317B515ACE7C
2 changed files with 21 additions and 2 deletions
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8
docs/changelog.rst
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@ -4,6 +4,14 @@ Changelog
|kitty| is a feature full, cross-platform, *fast*, GPU based terminal emulator.
To update |kitty|, :doc:`follow the instructions <binary>`.
0.17.4 [future]
--------------------
- macOS: Fix a regression in the previous release that caused ligatures to be
not be centered horizontally (:iss:`2591`)
0.17.3 [2020-04-23]
--------------------

15
kitty/fonts.c
View File

@ -1004,14 +1004,20 @@ merge_groups_for_pua_space_ligature(void) {
G(groups)->is_space_ligature = true;
}
static inline bool
is_group_calt_ligature(const Group *group) {
GPUCell *first_cell = G(first_gpu_cell) + group->first_cell_idx;
return group->num_cells > 1 && group->has_special_glyph && (first_cell->attrs & WIDTH_MASK) == 1;
}
static inline void
split_run_at_offset(index_type cursor_offset, index_type *left, index_type *right) {
*left = 0; *right = 0;
for (unsigned idx = 0; idx < G(group_idx) + 1; idx++) {
Group *group = G(groups) + idx;
if (group->first_cell_idx <= cursor_offset && cursor_offset < group->first_cell_idx + group->num_cells) {
GPUCell *first_cell = G(first_gpu_cell) + group->first_cell_idx;
if (group->num_cells > 1 && group->has_special_glyph && (first_cell->attrs & WIDTH_MASK) == 1) {
if (is_group_calt_ligature(group)) {
// likely a calt ligature
*left = group->first_cell_idx; *right = group->first_cell_idx + group->num_cells;
}
@ -1039,6 +1045,11 @@ render_groups(FontGroup *fg, Font *font, bool center_glyph) {
// there exist stupid fonts like Powerline that have no space glyph,
// so special case it: https://github.com/kovidgoyal/kitty/issues/1225
unsigned int num_glyphs = group->is_space_ligature ? 1 : group->num_glyphs;
#ifdef __APPLE__
// FiraCode ligatures need to be centered on macOS
// see https://github.com/kovidgoyal/kitty/issues/2591
if (is_group_calt_ligature(group)) center_glyph = true;
#endif
render_group(fg, group->num_cells, num_glyphs, G(first_cpu_cell) + group->first_cell_idx, G(first_gpu_cell) + group->first_cell_idx, G(info) + group->first_glyph_idx, G(positions) + group->first_glyph_idx, font, primary, &ed, center_glyph);
idx++;
}