mirror of
https://github.com/love2d/love.git
synced 2026-08-16 08:11:02 +02:00
Alex Szpakowski
121 lines
3.2 KiB
C++
121 lines
3.2 KiB
C++
/**
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* Copyright (c) 2006-2016 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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#include "wrap_Canvas.h"
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#include "Graphics.h"
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namespace love
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{
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namespace graphics
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{
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namespace opengl
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{
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Canvas *luax_checkcanvas(lua_State *L, int idx)
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{
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return luax_checktype<Canvas>(L, idx, GRAPHICS_CANVAS_ID);
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}
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int w_Canvas_renderTo(lua_State *L)
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{
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Canvas *canvas = luax_checkcanvas(L, 1);
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luaL_checktype(L, 2, LUA_TFUNCTION);
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auto graphics = Module::getInstance<Graphics>(Module::M_GRAPHICS);
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if (graphics)
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{
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// Save the current Canvas so we can restore it when we're done.
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std::vector<Canvas *> oldcanvases = graphics->getCanvas();
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for (Canvas *c : oldcanvases)
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c->retain();
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luax_catchexcept(L, [&](){ graphics->setCanvas(canvas); });
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lua_settop(L, 2); // make sure the function is on top of the stack
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int status = lua_pcall(L, 0, 0, 0);
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graphics->setCanvas(oldcanvases);
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for (Canvas *c : oldcanvases)
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c->release();
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if (status != 0)
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return lua_error(L);
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}
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return 0;
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}
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int w_Canvas_newImageData(lua_State *L)
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{
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Canvas *canvas = luax_checkcanvas(L, 1);
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love::image::Image *image = luax_getmodule<love::image::Image>(L, MODULE_IMAGE_ID);
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int x = (int) luaL_optnumber(L, 2, 0);
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int y = (int) luaL_optnumber(L, 3, 0);
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int w = (int) luaL_optnumber(L, 4, canvas->getWidth());
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int h = (int) luaL_optnumber(L, 5, canvas->getHeight());
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love::image::ImageData *img = nullptr;
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luax_catchexcept(L, [&](){ img = canvas->newImageData(image, x, y, w, h); });
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luax_pushtype(L, IMAGE_IMAGE_DATA_ID, img);
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img->release();
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return 1;
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}
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int w_Canvas_getFormat(lua_State *L)
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{
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Canvas *canvas = luax_checkcanvas(L, 1);
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Canvas::Format format = canvas->getTextureFormat();
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const char *str;
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if (!Canvas::getConstant(format, str))
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return luaL_error(L, "Unknown Canvas format.");
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lua_pushstring(L, str);
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return 1;
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}
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int w_Canvas_getMSAA(lua_State *L)
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{
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Canvas *canvas = luax_checkcanvas(L, 1);
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lua_pushinteger(L, canvas->getMSAA());
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return 1;
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}
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static const luaL_Reg w_Canvas_functions[] =
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{
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{ "renderTo", w_Canvas_renderTo },
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{ "newImageData", w_Canvas_newImageData },
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{ "getFormat", w_Canvas_getFormat },
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{ "getMSAA", w_Canvas_getMSAA },
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{ 0, 0 }
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};
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extern "C" int luaopen_canvas(lua_State *L)
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{
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return luax_register_type(L, GRAPHICS_CANVAS_ID, "Canvas", w_Texture_functions, w_Canvas_functions, nullptr);
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}
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} // opengl
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} // graphics
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} // love
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