src/lua/gui-box.cpp

   1 #include "lua/internal.hpp"
   2 #include "library/framebuffer.hpp"
   3 #include "library/range.hpp"
   4 #include "library/lua-framebuffer.hpp"
   5
   6 namespace
   7 {
   8         struct render_object_box : public framebuffer::object
   9         {
  10                 render_object_box(int32_t _x, int32_t _y, int32_t _width, int32_t _height,
  11                         framebuffer::color _outline1, framebuffer::color _outline2, framebuffer::color _fill,
  12                         int32_t _thickness) throw()
  13                         : x(_x), y(_y), width(_width), height(_height), outline1(_outline1), outline2(_outline2),
  14                         fill(_fill), thickness(_thickness) {}
  15                 ~render_object_box() throw() {}
  16                 template<bool X> void op(struct framebuffer::fb<X>& scr) throw()
  17                 {
  18                         uint32_t oX = x + scr.get_origin_x();
  19                         uint32_t oY = y + scr.get_origin_y();
  20                         range bX = (range::make_w(scr.get_width()) - oX) & range::make_w(width);
  21                         range bY = (range::make_w(scr.get_height()) - oY) & range::make_w(height);
  22                         for(uint32_t r = bY.low(); r != bY.high(); r++) {
  23                                 typename framebuffer::fb<X>::element_t* rptr = scr.rowptr(oY + r);
  24                                 size_t eptr = oX + bX.low();
  25                                 for(uint32_t c = bX.low(); c != bX.high(); c++, eptr++)
  26                                         if((r < thickness && r <= (width - c)) || (c < thickness && c < (height - r)))
  27                                                 outline1.apply(rptr[eptr]);
  28                                         else if(r < thickness || c < thickness || r >= height - thickness ||
  29                                                 c >= width - thickness)
  30                                                 outline2.apply(rptr[eptr]);
  31                                         else
  32                                                 fill.apply(rptr[eptr]);
  33                         }
  34                 }
  35                 void operator()(struct framebuffer::fb<true>& scr) throw()  { op(scr); }
  36                 void operator()(struct framebuffer::fb<false>& scr) throw() { op(scr); }
  37                 void clone(framebuffer::queue& q) const throw(std::bad_alloc) { q.clone_helper(this); }
  38         private:
  39                 int32_t x;
  40                 int32_t y;
  41                 uint32_t width;
  42                 uint32_t height;
  43                 framebuffer::color outline1;
  44                 framebuffer::color outline2;
  45                 framebuffer::color fill;
  46                 uint32_t thickness;
  47         };
  48
  49         int box(lua::state& L, lua::parameters& P)
  50         {
  51                 int32_t x, y;
  52                 uint32_t width, height, thickness;
  53                 framebuffer::color poutline1, poutline2, pfill;
  54
  55                 if(!lua_render_ctx) return 0;
  56
  57                 P(x, y, width, height, P.optional(thickness, 1), P.optional(poutline1, 0xFFFFFFU),
  58                         P.optional(poutline2, 0x808080U), P.optional(pfill, 0xC0C0C0U));
  59
  60                 lua_render_ctx->queue->create_add<render_object_box>(x, y, width, height, poutline1, poutline2,
  61                         pfill, thickness);
  62                 return 0;
  63         }
  64
  65         lua::functions box_fns(lua_func_misc, "gui", {
  66                 {"box", box},
  67         });
  68 }