shithub: slug

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expose window width and height as global variables on lua side

--- a/a.h

+++ b/a.h

@@ -16,7 +16,7 @@

 	Image *i;

 };

-void	resize(int, int);

+void	resize(lua_State*, int, int);

 void	drawcanvas(void);

 void	initstate(void);

--- a/api.c

+++ b/api.c

@@ -43,7 +43,7 @@

 		return 0;

 	width = w;

 	height = h;

-	resize(w, h);

+	resize(L, w, h);

 	return 0;

 }

--- a/slug.c

+++ b/slug.c

@@ -38,7 +38,7 @@

 }

 void

-resize(int w, int h)

+resize(lua_State *L, int w, int h)

 {

 	int fd, n;

 	char buf[255];

@@ -50,6 +50,10 @@

 	if(write(fd, buf, n) != n)

 		fprint(2, "write error: %r\n");

 	close(fd);

+	lua_pushnumber(L, w);

+	lua_setglobal(L, "width");

+	lua_pushnumber(L, h);

+	lua_setglobal(L, "height");

 }

 void

@@ -86,7 +90,7 @@

 	}

 	registerfuncs(L);

 	initstate();

-	resize(width, height);

+	resize(L, width, height);

 	drawing = 0;

 	lsetup(L);

 	drawing = 1;

@@ -98,7 +102,7 @@

 		case 1:

 			if(getwindow(display, Refnone)<0)

 				sysfatal("getwindow: %r");

-			resize(width, height);

+			resize(L, width, height);

 			drawcanvas();

 			break;

 		case 2: