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Add a C API copy method for font_desc objects 

Add a renderer.font's method "copy" to clone the font object
by specifying an optional new size. In the size is not given
the size of the original object is used.

Should fulfill the request from issue #288.
This commit is contained in:
Francesco Abbate 2021-06-21 11:18:52 +02:00
parent 2486f253eb
commit 1cf0f2009c
2 changed files with 18 additions and 2 deletions
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4
data/core/style.lua
View File

@ -22,9 +22,9 @@ style.tab_width = common.round(170 * SCALE)
-- On High DPI monitor or non RGB monitor you may consider using antialiasing grayscale instead.
-- The antialiasing grayscale with full hinting is interesting for crisp font rendering.
style.font = renderer.font.load(DATADIR .. "/fonts/FiraSans-Regular.ttf", 13 * SCALE)
style.big_font = renderer.font.load(DATADIR .. "/fonts/FiraSans-Regular.ttf", 40 * SCALE)
style.big_font = style.font:copy(40 * SCALE)
style.icon_font = renderer.font.load(DATADIR .. "/fonts/icons.ttf", 14 * SCALE, {antialiasing="grayscale", hinting="full"})
style.icon_big_font = renderer.font.load(DATADIR .. "/fonts/icons.ttf", 20 * SCALE, {antialiasing="grayscale", hinting="full"})
style.icon_big_font = style.icon_font:copy(20 * SCALE)
style.code_font = renderer.font.load(DATADIR .. "/fonts/JetBrainsMono-Regular.ttf", 13 * SCALE)
style.background = { common.color "#2e2e32" }

16
src/api/renderer_font.c
View File

@ -55,6 +55,21 @@ static int f_load(lua_State *L) {
}
static int f_copy(lua_State *L) {
FontDesc *self = luaL_checkudata(L, 1, API_TYPE_FONT);
float size;
if (lua_gettop(L) >= 2) {
size = luaL_checknumber(L, 2);
} else {
size = self->size;
}
FontDesc *new_font_desc = lua_newuserdata(L, font_desc_alloc_size(self->filename));
font_desc_init(new_font_desc, self->filename, size, self->options);
luaL_setmetatable(L, API_TYPE_FONT);
return 1;
}
static int f_set_tab_size(lua_State *L) {
FontDesc *self = luaL_checkudata(L, 1, API_TYPE_FONT);
int n = luaL_checknumber(L, 2);
@ -123,6 +138,7 @@ static int f_set_size(lua_State *L) {
static const luaL_Reg lib[] = {
{ "__gc", f_gc },
{ "load", f_load },
{ "copy", f_copy },
{ "set_tab_size", f_set_tab_size },
{ "get_width", f_get_width },
{ "get_width_subpixel", f_get_width_subpixel },