vhaudiquet/deb-lite-xl
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Introduce subpixel text positioning within rencache

Browse Source 
In order to fix the issue with cursor positioning a subpixel-aware draw
text operation within rencache was required.

With this modification the cursor positioning problem is completely
resolved.

A new function renderer.draw_text_subpixel is introduced to perform
consecutive, inline, text drawings with subpixel accuracy.
This commit is contained in:
Francesco Abbate
2021-03-06 18:12:02 +01:00
parent 9ff6a0325e
commit 3426bc5d73
6 changed files with 51 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/api/renderer.c
+21 -8
View File
@@ -78,20 +78,33 @@ static int f_draw_text(lua_State *L) {
int x = luaL_checknumber(L, 3);
int y = luaL_checknumber(L, 4);
RenColor color = checkcolor(L, 5, 255);
x = rencache_draw_text(*font, text, x, y, color);
x = rencache_draw_text(*font, text, x, y, color, false);
lua_pushnumber(L, x);
return 1;
}
static int f_draw_text_subpixel(lua_State *L) {
RenFont **font = luaL_checkudata(L, 1, API_TYPE_FONT);
const char *text = luaL_checkstring(L, 2);
int x_subpixel = luaL_checknumber(L, 3);
int y = luaL_checknumber(L, 4);
RenColor color = checkcolor(L, 5, 255);
x_subpixel = rencache_draw_text(*font, text, x_subpixel, y, color, true);
lua_pushnumber(L, x_subpixel);
return 1;
}
static const luaL_Reg lib[] = {
{ "show_debug", f_show_debug },
{ "get_size", f_get_size },
{ "begin_frame", f_begin_frame },
{ "end_frame", f_end_frame },
{ "set_clip_rect", f_set_clip_rect },
{ "draw_rect", f_draw_rect },
{ "draw_text", f_draw_text },
{ "show_debug", f_show_debug },
{ "get_size", f_get_size },
{ "begin_frame", f_begin_frame },
{ "end_frame", f_end_frame },
{ "set_clip_rect", f_set_clip_rect },
{ "draw_rect", f_draw_rect },
{ "draw_text", f_draw_text },
{ "draw_text_subpixel", f_draw_text_subpixel },
{ NULL, NULL }
};