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common/font: add scaled_font_buffer_create_for_titlebar()

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Co-authored-by: tokyo4j <hrak1529@gmail.com>
This commit is contained in:
John Lindgren 2025-05-29 12:34:03 -04:00
parent 3ca7adace0
commit 54b236e027
4 changed files with 76 additions and 18 deletions
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21
src/common/font.c
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@ -86,15 +86,18 @@ font_get_buffer_size(int max_width, const char *text, struct font *font,
void
font_buffer_create(struct lab_data_buffer **buffer, int max_width,
const char *text, struct font *font, const float *color,
const float *bg_color, double scale)
int height, const char *text, struct font *font, const float *color,
cairo_pattern_t *bg_pattern, double scale)
{
if (string_null_or_empty(text)) {
return;
}
int width, height;
font_get_buffer_size(max_width, text, font, &width, &height);
int width, computed_height;
font_get_buffer_size(max_width, text, font, &width, &computed_height);
if (height <= 0) {
height = computed_height;
}
*buffer = buffer_create_cairo(width, height, scale);
if (!*buffer) {
@ -114,18 +117,16 @@ font_buffer_create(struct lab_data_buffer **buffer, int max_width,
* buffer unfilled (completely transparent) since the background
* is already rendered by the scene element underneath. In this
* case we have to disable subpixel rendering.
*
* Note: the 0.999 cutoff was chosen to be greater than 254/255
* (about 0.996) but leave some margin for rounding errors.
*/
bool opaque_bg = (bg_color[3] > 0.999f);
bool opaque_bg = is_pattern_opaque(bg_pattern);
if (opaque_bg) {
set_cairo_color(cairo, bg_color);
cairo_set_source(cairo, bg_pattern);
cairo_paint(cairo);
}
set_cairo_color(cairo, color);
cairo_move_to(cairo, 0, 0);
/* center vertically if height was explicitly specified */
cairo_move_to(cairo, 0, (height - computed_height) / 2);
PangoLayout *layout = pango_cairo_create_layout(cairo);
pango_context_set_round_glyph_positions(pango_layout_get_context(layout), false);