From 8f7926039b960ea7580721a1ddc16c609db25320 Mon Sep 17 00:00:00 2001
From: Kevin Harrison <keharriso@gmail.com>
Date: Fri, 14 Dec 2018 14:46:02 -0500
Subject: [PATCH] Add Quad support for images

---
 example/skin.lua                |  28 ++++++++-----
 example/skin/button.png         | Bin 2428 -> 4281 bytes
 example/skin/button_active.png  | Bin 2368 -> 0 bytes
 example/skin/button_hover.png   | Bin 2414 -> 0 bytes
 example/skin/checkbox.png       | Bin 0 -> 2441 bytes
 example/skin/checkbox_false.png | Bin 1198 -> 0 bytes
 example/skin/checkbox_true.png  | Bin 2970 -> 0 bytes
 src/nuklear_love.c              |  69 ++++++++++++++++++++------------
 8 files changed, 61 insertions(+), 36 deletions(-)
 delete mode 100644 example/skin/button_active.png
 delete mode 100644 example/skin/button_hover.png
 create mode 100644 example/skin/checkbox.png
 delete mode 100644 example/skin/checkbox_false.png
 delete mode 100644 example/skin/checkbox_true.png

diff --git a/example/skin.lua b/example/skin.lua
index 968e0a8..77827b4 100644
--- a/example/skin.lua
+++ b/example/skin.lua
@@ -1,28 +1,34 @@
 -- Basic skinning example.
 
 local windowHeader = love.graphics.newImage 'skin/window_header.png'
-local checkboxSkin = love.graphics.newImage 'skin/checkbox_false.png'
-local checkboxCheck = love.graphics.newImage 'skin/checkbox_true.png'
+local windowBody = love.graphics.newImage 'skin/window.png'
+local checkboxTexture = love.graphics.newImage 'skin/checkbox.png'
+local checkboxOff = {checkboxTexture, love.graphics.newQuad(0, 0, 51, 55, 58, 115)}
+local checkboxOn = {checkboxTexture, love.graphics.newQuad(0, 55, 58, 60, 58, 115)}
+local buttonTexture = love.graphics.newImage 'skin/button.png'
+local buttonNormal = {buttonTexture, love.graphics.newQuad(0, 0, 69, 52, 69, 156)}
+local buttonActive = {buttonTexture, love.graphics.newQuad(0, 52, 69, 52, 69, 156)}
+local buttonHover = {buttonTexture, love.graphics.newQuad(0, 104, 69, 52, 69, 156)}
 
 local style = {
 	['text'] = {
 		['color'] = '#000000'
 	},
 	['button'] = {
-		['normal'] = love.graphics.newImage 'skin/button.png',
-		['hover'] = love.graphics.newImage 'skin/button_hover.png',
-		['active'] = love.graphics.newImage 'skin/button_active.png',
+		['normal'] = buttonNormal,
+		['hover'] = buttonHover,
+		['active'] = buttonActive,
 		['text background'] = '#00000000',
 		['text normal'] = '#000000',
 		['text hover'] = '#000000',
 		['text active'] = '#ffffff'
 	},
 	['checkbox'] = {
-		['normal'] = checkboxSkin,
-		['hover'] = checkboxSkin,
-		['active'] = checkboxSkin,
-		['cursor normal'] = checkboxCheck,
-		['cursor hover'] = checkboxCheck,
+		['normal'] = checkboxOff,
+		['hover'] = checkboxOff,
+		['active'] = checkboxOff,
+		['cursor normal'] = checkboxOn,
+		['cursor hover'] = checkboxOn,
 		['text normal'] = '#000000',
 		['text hover'] = '#000000',
 		['text active'] = '#000000',
@@ -38,7 +44,7 @@ local style = {
 			['label active'] = '#000000',
 			['label padding'] = {x = 10, y = 8}
 		},
-		['fixed background'] = love.graphics.newImage 'skin/window.png',
+		['fixed background'] = windowBody,
 		['background'] = '#d3ceaa'
 	}
 }
diff --git a/example/skin/button.png b/example/skin/button.png
index 0c4783dfb72eb4546b06d6160a6b9ff093478ffc..d0381a10e428c2670342a6c5cb438dd32cfc7197 100644
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zz_D|in7UPdO?2v(QUK}kdT}oc)=kq$=dmW@=$ckn;;!Rc&3&0b0^s}OTXL>qIpnwg
z*q`U7JUN3_#!{f`cf3I@z>d%B3W9)=8DV^QQ{mV$70yD=XDUFJT_`@gBa&sn%>)H-
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literal 0
HcmV?d00001

diff --git a/example/skin/checkbox_false.png b/example/skin/checkbox_false.png
deleted file mode 100644
index df85f65883a5b93a54b2e2a251e9da1996a37962..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 1198
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diff --git a/example/skin/checkbox_true.png b/example/skin/checkbox_true.png
deleted file mode 100644
index 8efc2253bd1bcad8af49199307922f2b08beca3e..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 2970
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diff --git a/src/nuklear_love.c b/src/nuklear_love.c
index b7c5da8..b1637ba 100644
--- a/src/nuklear_love.c
+++ b/src/nuklear_love.c
@@ -184,24 +184,42 @@ static void nk_love_checkImage(int index, struct nk_image *image)
 {
 	if (index < 0)
 		index += lua_gettop(L) + 1;
-	if (!nk_love_is_type(index, "Image"))
-		luaL_typerror(L, index, "Image");
+	if (nk_love_is_type(index, "Image")) {
+		lua_getglobal(L, "love");
+		lua_getfield(L, -1, "graphics");
+		lua_getfield(L, -1, "newQuad");
+		lua_pushnumber(L, 0);
+		lua_pushnumber(L, 0);
+		lua_getfield(L, index, "getDimensions");
+		lua_pushvalue(L, index);
+		lua_call(L, 1, 2);
+		lua_pushvalue(L, -2);
+		lua_pushvalue(L, -2);
+		lua_call(L, 6, 1);
+		lua_newtable(L);
+		lua_pushvalue(L, index);
+		lua_rawseti(L, -2, 1);
+		lua_replace(L, -3);
+		lua_rawseti(L, -2, 2);
+		lua_replace(L, -2);
+	} else if (lua_istable(L, index)) {
+		lua_createtable(L, 2, 0);
+		lua_rawgeti(L, index, 2);
+		lua_rawgeti(L, index, 1);
+		if (nk_love_is_type(-1, "Image") && nk_love_is_type(-2, "Quad")) {
+			lua_rawseti(L, -3, 1);
+			lua_rawseti(L, -2, 2);
+		} else {
+			luaL_argerror(L, index, "expecting {Image, Quad}");
+		}
+	} else {
+		luaL_argerror(L, index, "expecting Image or {Image, Quad}");
+	}
 	nk_love_pushregistry("image");
-	lua_pushvalue(L, index);
+	lua_pushvalue(L, -2);
 	int ref = luaL_ref(L, -2);
-	lua_getfield(L, index, "getDimensions");
-	lua_pushvalue(L, index);
-	lua_call(L, 1, 2);
-	int width = lua_tointeger(L, -2);
-	int height = lua_tointeger(L, -1);
 	image->handle = nk_handle_id(ref);
-	image->w = width;
-	image->h = height;
-	image->region[0] = 0;
-	image->region[1] = 0;
-	image->region[2] = width;
-	image->region[3] = height;
-	lua_pop(L, 3);
+	lua_pop(L, 2);
 }
 
 static int nk_love_is_hex(char c)
@@ -847,20 +865,21 @@ static void nk_love_draw_image(int x, int y, unsigned int w, unsigned int h,
 	lua_getfield(L, -1, "draw");
 	nk_love_pushregistry("image");
 	lua_rawgeti(L, -1, image.handle.id);
+	lua_rawgeti(L, -1, 1);
+	lua_replace(L, -3);
+	lua_rawgeti(L, -1, 2);
 	lua_replace(L, -2);
-	lua_getfield(L, -3, "newQuad");
-	lua_pushnumber(L, image.region[0]);
-	lua_pushnumber(L, image.region[1]);
-	lua_pushnumber(L, image.region[2]);
-	lua_pushnumber(L, image.region[3]);
-	lua_pushnumber(L, image.w);
-	lua_pushnumber(L, image.h);
-	lua_call(L, 6, 1);
 	lua_pushnumber(L, x);
 	lua_pushnumber(L, y);
 	lua_pushnumber(L, 0);
-	lua_pushnumber(L, (double) w / image.region[2]);
-	lua_pushnumber(L, (double) h / image.region[3]);
+	lua_getfield(L, -4, "getViewport");
+	lua_pushvalue(L, -5);
+	lua_call(L, 1, 4);
+	double viewportWidth = lua_tonumber(L, -2);
+	double viewportHeight = lua_tonumber(L, -1);
+	lua_pop(L, 4);
+	lua_pushnumber(L, (double) w / viewportWidth);
+	lua_pushnumber(L, (double) h / viewportHeight);
 	lua_call(L, 7, 0);
 	lua_pop(L, 1);
 }