Lerking/gtk
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

gsk: cache sequentially requested hinted fonts

Browse Source 
When getting the hinted version of fonts, they often come in sequentially.
This helps reduce overhead in many sequential gtk_text_node_new() on with
fractional scaling as you see from GtkSourceView.
This commit is contained in:
Christian Hergert
2024-03-08 15:39:55 -08:00
parent 09736dde93
commit fc72449228
1 changed files with 24 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
gsk/gskprivate.c
View File

@@ -129,6 +129,25 @@ gsk_get_hinted_font (PangoFont *font,
double dpi;
#endif
/* These requests often come in sequentially so keep the result
* around and re-use it if everything matches.
*/
static PangoFont *last_font;
static cairo_hint_style_t last_hint_style;
static cairo_antialias_t last_antialias;
static PangoFont *last_result;
if (last_result != NULL &&
last_font == font &&
last_hint_style == hint_style &&
last_antialias == antialias)
return g_object_ref (last_result);
last_hint_style = hint_style;
last_antialias = antialias;
g_set_object (&last_font, font);
g_clear_object (&last_result);
options = cairo_font_options_create ();
sf = pango_cairo_font_get_scaled_font (PANGO_CAIRO_FONT (font));
cairo_scaled_font_get_font_options (sf, options);
@@ -144,6 +163,7 @@ gsk_get_hinted_font (PangoFont *font,
cairo_font_options_get_hint_metrics (options) == CAIRO_HINT_METRICS_OFF &&
cairo_font_options_get_subpixel_order (options) == CAIRO_SUBPIXEL_ORDER_DEFAULT)
{
last_result = g_object_ref (font);
cairo_font_options_destroy (options);
return g_object_ref (font);
}
@@ -160,7 +180,7 @@ gsk_get_hinted_font (PangoFont *font,
cairo_font_options_destroy (options);
#if PANGO_VERSION_CHECK (1, 52, 0)
return pango_font_map_reload_font (pango_font_get_font_map (font), font, 1.0, context, NULL);
last_result = pango_font_map_reload_font (pango_font_get_font_map (font), font, 1.0, context, NULL);
#else
pattern = pango_fc_font_get_pattern (PANGO_FC_FONT (font));
@@ -168,11 +188,11 @@ gsk_get_hinted_font (PangoFont *font,
pango_cairo_context_set_resolution (context, dpi);
desc = pango_font_describe (font);
font = pango_font_map_load_font (pango_font_get_font_map (font), context, desc);
last_result = pango_font_map_load_font (pango_font_get_font_map (font), context, desc);
pango_font_description_free (desc);
return font;
#endif
return g_object_ref (last_result);
}
/*< private >