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/* Copyright (C) 2007-2008 Geoff Richards
* Copyright (C) 2010-2011 Uli Schlachter
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
static int
path_gc (lua_State *L) {
cairo_path_t **obj = luaL_checkudata(L, 1, OOCAIRO_MT_NAME_PATH);
cairo_path_destroy(*obj);
*obj = 0;
return 0;
}
static int
path_each_iter (lua_State *L) {
cairo_path_t *path = *(cairo_path_t **) luaL_checkudata(L, 1, OOCAIRO_MT_NAME_PATH);
cairo_path_data_t *data;
int i;
if (lua_isnoneornil(L, 2))
i = 0;
else {
i = luaL_checkint(L, 2);
luaL_argcheck(L, i >= 0 && i < path->num_data, 2,
"path index out of range");
i += path->data[i].header.length;
}
if (i >= path->num_data)
return 0;
lua_pushinteger(L, i);
data = &path->data[i];
switch (data->header.type) {
case CAIRO_PATH_MOVE_TO:
lua_pushliteral(L, "move-to");
lua_createtable(L, 2, 0);
lua_pushnumber(L, data[1].point.x);
lua_rawseti(L, -2, 1);
lua_pushnumber(L, data[1].point.y);
lua_rawseti(L, -2, 2);
break;
case CAIRO_PATH_LINE_TO:
lua_pushliteral(L, "line-to");
lua_createtable(L, 2, 0);
lua_pushnumber(L, data[1].point.x);
lua_rawseti(L, -2, 1);
lua_pushnumber(L, data[1].point.y);
lua_rawseti(L, -2, 2);
break;
case CAIRO_PATH_CURVE_TO:
lua_pushliteral(L, "curve-to");
lua_createtable(L, 2, 0);
lua_pushnumber(L, data[1].point.x);
lua_rawseti(L, -2, 1);
lua_pushnumber(L, data[1].point.y);
lua_rawseti(L, -2, 2);
lua_pushnumber(L, data[2].point.x);
lua_rawseti(L, -2, 3);
lua_pushnumber(L, data[2].point.y);
lua_rawseti(L, -2, 4);
lua_pushnumber(L, data[3].point.x);
lua_rawseti(L, -2, 5);
lua_pushnumber(L, data[3].point.y);
lua_rawseti(L, -2, 6);
break;
case CAIRO_PATH_CLOSE_PATH:
lua_pushliteral(L, "close-path");
lua_pushnil(L);
break;
default:
assert(0);
}
return 3;
}
static int
path_each (lua_State *L) {
luaL_checkudata(L, 1, OOCAIRO_MT_NAME_PATH);
lua_pushcfunction(L, path_each_iter);
lua_pushvalue(L, 1);
return 2;
}
static const luaL_Reg
path_methods[] = {
{ "__gc", path_gc },
{ "each", path_each },
{ 0, 0 }
};
/* vi:set ts=4 sw=4 expandtab: */
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