108 lines
2.3 KiB
C
108 lines
2.3 KiB
C
#include "api.h"
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#include "renderer.h"
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#include "rencache.h"
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#include "xalloc.h"
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static RenColor checkcolor(lua_State *L, int idx, int def) {
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RenColor color;
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if (lua_isnoneornil(L, idx)) {
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return (RenColor) { def, def, def, 255 };
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}
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lua_rawgeti(L, idx, 1);
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lua_rawgeti(L, idx, 2);
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lua_rawgeti(L, idx, 3);
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lua_rawgeti(L, idx, 4);
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color.r = luaL_checknumber(L, -4);
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color.g = luaL_checknumber(L, -3);
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color.b = luaL_checknumber(L, -2);
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color.a = luaL_optnumber(L, -1, 255);
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lua_pop(L, 4);
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return color;
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}
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static int f_show_debug(lua_State *L) {
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luaL_checkany(L, 1);
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rencache_show_debug(lua_toboolean(L, 1));
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return 0;
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}
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static int f_get_size(lua_State *L) {
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int w, h;
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ren_get_size(&w, &h);
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lua_pushnumber(L, w);
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lua_pushnumber(L, h);
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return 2;
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}
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static int f_begin_frame(lua_State *L) {
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rencache_begin_frame();
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return 0;
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}
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static int f_end_frame(lua_State *L) {
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rencache_end_frame();
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return 0;
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}
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static int f_set_clip_rect(lua_State *L) {
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RenRect rect;
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rect.x = luaL_checknumber(L, 1);
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rect.y = luaL_checknumber(L, 2);
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rect.width = luaL_checknumber(L, 3);
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rect.height = luaL_checknumber(L, 4);
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rencache_set_clip_rect(rect);
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return 0;
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}
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static int f_draw_rect(lua_State *L) {
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RenRect rect;
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rect.x = luaL_checknumber(L, 1);
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rect.y = luaL_checknumber(L, 2);
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rect.width = luaL_checknumber(L, 3);
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rect.height = luaL_checknumber(L, 4);
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RenColor color = checkcolor(L, 5, 255);
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rencache_draw_rect(rect, color);
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return 0;
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}
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static int f_draw_text(lua_State *L) {
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RenFont **font = luaL_checkudata(L, 1, API_TYPE_FONT);
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const char *text = luaL_checkstring(L, 2);
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int x = luaL_checknumber(L, 3);
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int y = luaL_checknumber(L, 4);
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RenColor color = checkcolor(L, 5, 255);
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x = rencache_draw_text(*font, text, x, y, color);
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lua_pushnumber(L, x);
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return 1;
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}
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static const luaL_Reg lib[] = {
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{ "show_debug", f_show_debug },
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{ "get_size", f_get_size },
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{ "begin_frame", f_begin_frame },
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{ "end_frame", f_end_frame },
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{ "set_clip_rect", f_set_clip_rect },
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{ "draw_rect", f_draw_rect },
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{ "draw_text", f_draw_text },
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{ NULL, NULL }
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};
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int luaopen_renderer_font(lua_State *L);
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int luaopen_renderer(lua_State *L) {
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luaL_newlib(L, lib);
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luaopen_renderer_font(L);
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lua_setfield(L, -2, "font");
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return 1;
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}
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