src/lua/gui-text.cpp

   1 #include "core/instance.hpp"
   2 #include "lua/internal.hpp"
   3 #include "fonts/wrapper.hpp"
   4 #include "library/framebuffer.hpp"
   5 #include "library/lua-framebuffer.hpp"
   6
   7 namespace
   8 {
   9         struct render_object_text : public framebuffer::object
  10         {
  11                 render_object_text(int32_t _x, int32_t _y, const std::string& _text, framebuffer::color _fg,
  12                         framebuffer::color _bg, bool _hdbl = false, bool _vdbl = false) throw()
  13                         : x(_x), y(_y), text(_text), fg(_fg), bg(_bg), hdbl(_hdbl), vdbl(_vdbl) {}
  14                 ~render_object_text() throw() {}
  15                 template<bool X> void op(struct framebuffer::fb<X>& scr) throw()
  16                 {
  17                         main_font.render(scr, x, y, text, fg, bg, hdbl, vdbl);
  18                 }
  19                 void operator()(struct framebuffer::fb<true>& scr) throw()  { op(scr); }
  20                 void operator()(struct framebuffer::fb<false>& scr) throw() { op(scr); }
  21                 void clone(framebuffer::queue& q) const throw(std::bad_alloc) { q.clone_helper(this); }
  22         private:
  23                 int32_t x;
  24                 int32_t y;
  25                 std::string text;
  26                 framebuffer::color fg;
  27                 framebuffer::color bg;
  28                 bool hdbl;
  29                 bool vdbl;
  30         };
  31
  32         template<bool hdbl, bool vdbl>
  33         int internal_gui_text(lua::state& L, lua::parameters& P)
  34         {
  35                 auto& core = CORE();
  36                 int32_t x, y;
  37                 std::string text;
  38                 framebuffer::color fg, bg;
  39
  40                 if(!core.lua2->render_ctx) return 0;
  41
  42                 P(x, y, text, P.optional(fg, 0xFFFFFFU), P.optional(bg, -1));
  43
  44                 core.lua2->render_ctx->queue->create_add<render_object_text>(x, y, text, fg, bg, hdbl, vdbl);
  45                 return 0;
  46         }
  47
  48         lua::functions LUA_text_fns(lua_func_misc, "gui", {
  49                 {"text", internal_gui_text<false, false>},
  50                 {"textH", internal_gui_text<true, false>},
  51                 {"textV", internal_gui_text<false, true>},
  52                 {"textHV", internal_gui_text<true, true>},
  53         });
  54 }