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Set cairo hinting options

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Kovid Goyal
2025-01-30 11:37:15 +05:30
parent f145403fce
commit 3d06cb8709
1 changed files with 29 additions and 1 deletions
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30
kitty/freetype.c
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@@ -643,6 +643,12 @@ downsample_32bit_image(uint8_t *src, unsigned src_width, unsigned src_height, un
return factor; return factor;
} }
static bool
set_cairo_exception(const char *msg, cairo_status_t s) {
PyErr_Format(FreeType_Exception, "cairo error: %s: %s", msg, cairo_status_to_string(s));
return false;
}
static void static void
free_cairo_surface_data(Face *self) { free_cairo_surface_data(Face *self) {
if (self->cairo.cr) cairo_destroy(self->cairo.cr); if (self->cairo.cr) cairo_destroy(self->cairo.cr);
@@ -680,7 +686,6 @@ ensure_cairo_resources(Face *self, size_t width, size_t height) {
return false; return false;
} }
self->cairo.size_in_px = 0; self->cairo.size_in_px = 0;
// TODO: Set cairo_font_options
} }
size_t stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, width); size_t stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, width);
if (stride * height > self->cairo.stride * self->cairo.height) { if (stride * height > self->cairo.stride * self->cairo.height) {
@@ -695,6 +700,29 @@ ensure_cairo_resources(Face *self, size_t width, size_t height) {
if (!self->cairo.cr) { PyErr_NoMemory(); return false; } if (!self->cairo.cr) { PyErr_NoMemory(); return false; }
cairo_set_font_face(self->cairo.cr, self->cairo.font); cairo_set_font_face(self->cairo.cr, self->cairo.font);
self->cairo.width = width; self->cairo.height = height; self->cairo.size_in_px = 0; self->cairo.width = width; self->cairo.height = height; self->cairo.size_in_px = 0;
cairo_font_options_t *opts = cairo_font_options_create();
cairo_status_t s;
if ((s = cairo_font_options_status(opts)) != CAIRO_STATUS_SUCCESS) {
cairo_font_options_destroy(opts);
return set_cairo_exception("Failed to create cairo font options", s);
}
cairo_hint_style_t h = CAIRO_HINT_STYLE_NONE;
if (self->hinting) {
switch(self->hintstyle) {
case 0: break;
case 1: h = CAIRO_HINT_STYLE_SLIGHT; break;
case 2: h = CAIRO_HINT_STYLE_MEDIUM; break;
case 3: h = CAIRO_HINT_STYLE_FULL; break;
default: h = CAIRO_HINT_STYLE_MEDIUM; break;
}
}
cairo_font_options_set_hint_style(opts, h);
if ((s = cairo_font_options_status(opts)) != CAIRO_STATUS_SUCCESS) {
cairo_font_options_destroy(opts);
return set_cairo_exception("Failed to set cairo hintstyle", s);
}
cairo_set_font_options(self->cairo.cr, opts);
cairo_font_options_destroy(opts);
} }
return true; return true;
} }