src/lua/gui-rectangle.cpp

   1 #include "core/instance.hpp"
   2 #include "lua/internal.hpp"
   3 #include "library/framebuffer.hpp"
   4 #include "library/range.hpp"
   5 #include "library/lua-framebuffer.hpp"
   6
   7 namespace
   8 {
   9         struct render_object_rectangle : public framebuffer::object
  10         {
  11                 render_object_rectangle(int32_t _x, int32_t _y, int32_t _width, int32_t _height,
  12                         framebuffer::color _outline, framebuffer::color _fill, int32_t _thickness) throw()
  13                         : x(_x), y(_y), width(_width), height(_height), outline(_outline), fill(_fill),
  14                         thickness(_thickness) {}
  15                 ~render_object_rectangle() 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 || c < thickness || r >= height - thickness ||
  27                                                 c >= width - thickness)
  28                                                 outline.apply(rptr[eptr]);
  29                                         else
  30                                                 fill.apply(rptr[eptr]);
  31                         }
  32                 }
  33                 void operator()(struct framebuffer::fb<true>& scr) throw()  { op(scr); }
  34                 void operator()(struct framebuffer::fb<false>& scr) throw() { op(scr); }
  35                 void clone(framebuffer::queue& q) const throw(std::bad_alloc) { q.clone_helper(this); }
  36         private:
  37                 int32_t x;
  38                 int32_t y;
  39                 uint32_t width;
  40                 uint32_t height;
  41                 framebuffer::color outline;
  42                 framebuffer::color fill;
  43                 uint32_t thickness;
  44         };
  45
  46         int rectangle(lua::state& L, lua::parameters& P)
  47         {
  48                 auto& core = CORE();
  49                 int32_t x, y;
  50                 uint32_t width, height, thickness;
  51                 framebuffer::color poutline, pfill;
  52
  53                 if(!core.lua2->render_ctx) return 0;
  54
  55                 P(x, y, width, height, P.optional(thickness, 1), P.optional(poutline, 0xFFFFFFU),
  56                         P.optional(pfill, -1));
  57
  58                 core.lua2->render_ctx->queue->create_add<render_object_rectangle>(x, y, width, height, poutline,
  59                         pfill, thickness);
  60                 return 0;
  61         }
  62
  63         int srectangle(lua::state& L, lua::parameters& P)
  64         {
  65                 auto& core = CORE();
  66                 int32_t x, y;
  67                 uint32_t width, height;
  68                 framebuffer::color pcolor;
  69
  70                 if(!core.lua2->render_ctx) return 0;
  71
  72                 P(x, y, width, height, P.optional(pcolor, 0xFFFFFFU));
  73
  74                 core.lua2->render_ctx->queue->create_add<render_object_rectangle>(x, y, width, height, pcolor, pcolor,
  75                         0);
  76                 return 0;
  77         }
  78
  79         lua::functions LUA_rectangle_fns(lua_func_misc, "gui", {
  80                 {"rectangle", rectangle},
  81                 {"solidrectangle", srectangle},
  82         });
  83 }