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Add option to enable subpixel font rendering with transparent background

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David Rosca 2021-07-21 09:17:43 +02:00
parent 029920ddcc
commit aeac5ad6f1
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GPG key ID: EBC3FC294452C6D8
5 changed files with 13 additions and 2 deletions
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4
config.c
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@ -961,6 +961,9 @@ parse_section_main(const char *key, const char *value, struct config *conf,
else if (strcmp(key, "box-drawings-uses-font-glyphs") == 0) else if (strcmp(key, "box-drawings-uses-font-glyphs") == 0)
conf->box_drawings_uses_font_glyphs = str_to_bool(value); conf->box_drawings_uses_font_glyphs = str_to_bool(value);
else if (strcmp(key, "subpixel-with-alpha") == 0)
conf->subpixel_with_alpha = str_to_bool(value);
else { else {
LOG_AND_NOTIFY_ERR("%s:%u: [default]: %s: invalid key", path, lineno, key); LOG_AND_NOTIFY_ERR("%s:%u: [default]: %s: invalid key", path, lineno, key);
return false; return false;
@ -2740,6 +2743,7 @@ config_load(struct config *conf, const char *conf_path,
.vertical_letter_offset = {.pt = 0, .px = 0}, .vertical_letter_offset = {.pt = 0, .px = 0},
.use_custom_underline_offset = false, .use_custom_underline_offset = false,
.box_drawings_uses_font_glyphs = false, .box_drawings_uses_font_glyphs = false,
.subpixel_with_alpha = false,
.dpi_aware = DPI_AWARE_AUTO, /* DPI-aware when scaling-factor == 1 */ .dpi_aware = DPI_AWARE_AUTO, /* DPI-aware when scaling-factor == 1 */
.bell = { .bell = {
.urgent = false, .urgent = false,

2
config.h
View file

@ -114,6 +114,8 @@ struct config {
bool box_drawings_uses_font_glyphs; bool box_drawings_uses_font_glyphs;
bool can_shape_grapheme; bool can_shape_grapheme;
bool subpixel_with_alpha;
struct { struct {
bool urgent; bool urgent;
bool notify; bool notify;

4
doc/foot.ini.5.scd
View file

@ -145,6 +145,10 @@ in this order:
Default: _no_. Default: _no_.
*subpixel-with-alpha*
Boolean. When enabled, subpixel font rendering will be used also
with transparent background. Default: _no_.
*dpi-aware* *dpi-aware*
*auto*, *yes*, or *no*. When set to *yes*, fonts are sized using *auto*, *yes*, or *no*. When set to *yes*, fonts are sized using
the monitor's DPI, making a font of a given size have the same the monitor's DPI, making a font of a given size have the same

1
foot.ini
View file

@ -19,6 +19,7 @@
# underline-offset=<font metrics> # underline-offset=<font metrics>
# box-drawings-uses-font-glyphs=no # box-drawings-uses-font-glyphs=no
# dpi-aware=yes # dpi-aware=yes
# subpixel-with-alpha=no
# initial-window-size-pixels=700x500 # Or, # initial-window-size-pixels=700x500 # Or,
# initial-window-size-chars=<COLSxROWS> # initial-window-size-chars=<COLSxROWS>

4
terminal.c
View file

@ -760,7 +760,7 @@ get_font_dpi(const struct terminal *term)
static enum fcft_subpixel static enum fcft_subpixel
get_font_subpixel(const struct terminal *term) get_font_subpixel(const struct terminal *term)
{ {
if (term->colors.alpha != 0xffff) { if (!term->conf->subpixel_with_alpha && term->colors.alpha != 0xffff) {
/* Can't do subpixel rendering on transparent background */ /* Can't do subpixel rendering on transparent background */
return FCFT_SUBPIXEL_NONE; return FCFT_SUBPIXEL_NONE;
} }
@ -1086,7 +1086,7 @@ term_init(const struct config *conf, struct fdm *fdm, struct reaper *reaper,
xmalloc(sizeof(term->font_sizes[3][0]) * conf->fonts[3].count), xmalloc(sizeof(term->font_sizes[3][0]) * conf->fonts[3].count),
}, },
.font_dpi = 0., .font_dpi = 0.,
.font_subpixel = (conf->colors.alpha == 0xffff /* Can't do subpixel rendering on transparent background */ .font_subpixel = ((conf->subpixel_with_alpha || conf->colors.alpha == 0xffff) /* Can't do subpixel rendering on transparent background */
? FCFT_SUBPIXEL_DEFAULT ? FCFT_SUBPIXEL_DEFAULT
: FCFT_SUBPIXEL_NONE), : FCFT_SUBPIXEL_NONE),
.cursor_keys_mode = CURSOR_KEYS_NORMAL, .cursor_keys_mode = CURSOR_KEYS_NORMAL,