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Handle multiple spaces after PUA glyphs

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This commit is contained in:
Daniel Hahler 2018-09-28 15:34:14 +02:00
parent e498cedf56
commit efc0b830cf
1 changed files with 29 additions and 17 deletions
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46
kitty/fonts.c
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@ -901,12 +901,12 @@ shape_run(CPUCell *first_cpu_cell, GPUCell *first_gpu_cell, index_type num_cells
static inline void
merge_groups_for_pua_space_ligature() {
if (G(group_idx) == 1) {
while (G(group_idx) > 0) {
Group *g = G(groups), *g1 = G(groups) + 1;
g->num_cells += g1->num_cells;
g->num_glyphs += g1->num_glyphs;
g->num_glyphs = MIN(g->num_glyphs, MAX_NUM_EXTRA_GLYPHS + 1);
G(group_idx) = 0;
G(group_idx)--;
}
}
@ -1006,21 +1006,33 @@ render_line(FONTS_DATA_HANDLE fg_, Line *line) {
CPUCell *cpu_cell = line->cpu_cells + i;
GPUCell *gpu_cell = line->gpu_cells + i;
ssize_t cell_font_idx = font_for_cell(fg, cpu_cell, gpu_cell);
if (is_private_use(cpu_cell->ch) && i + 1 < line->xnum && (line->cpu_cells[i+1].ch == ' ' || line->cpu_cells[i+1].ch == 0) && cell_font_idx != BOX_FONT && cell_font_idx != MISSING_FONT) {
// We have a private use char followed by a space char, render it as a two cell ligature.
GPUCell *space_cell = line->gpu_cells + i+1;
// Ensure the space cell uses the foreground colors from the PUA cell
// This is needed because there are stupid applications like
// powerline that use PUA+space with different foreground colors
// for the space and the PUA. See for example: https://github.com/kovidgoyal/kitty/issues/467
space_cell->fg = gpu_cell->fg; space_cell->decoration_fg = gpu_cell->decoration_fg;
RENDER;
render_run(fg, line->cpu_cells + i, line->gpu_cells + i, 2, cell_font_idx, true);
run_font_idx = NO_FONT;
first_cell_in_run = i + 2;
prev_width = line->gpu_cells[i+1].attrs & WIDTH_MASK;
i++;
continue;
if (is_private_use(cpu_cell->ch)
&& cell_font_idx != BOX_FONT
&& cell_font_idx != MISSING_FONT) {
int j = 0;
while ((line->cpu_cells[i+1+j].ch == ' ' || line->cpu_cells[i+1+j].ch == 0)
&& j < MAX_NUM_EXTRA_GLYPHS
&& i + 1 + j < line->xnum) {
j++;
// We have a private use char followed by space(s), render it as a multi-cell ligature.
GPUCell *space_cell = line->gpu_cells + i+j;
// Ensure the space cell uses the foreground/background colors from the PUA cell.
// This is needed because there are stupid applications like
// powerline that use PUA+space with different foreground colors
// for the space and the PUA. See for example: https://github.com/kovidgoyal/kitty/issues/467
space_cell->fg = gpu_cell->fg;
space_cell->bg = gpu_cell->bg;
space_cell->decoration_fg = gpu_cell->decoration_fg;
}
if (j) {
RENDER;
render_run(fg, line->cpu_cells + i, line->gpu_cells + i, j + 1, cell_font_idx, true);
run_font_idx = NO_FONT;
first_cell_in_run = i + 1 + j;
prev_width = gpu_cell->attrs & WIDTH_MASK;
i += j;
continue;
}
}
prev_width = gpu_cell->attrs & WIDTH_MASK;
if (run_font_idx == NO_FONT) run_font_idx = cell_font_idx;