util: remove unneeded module

meson.build

@@ -123,7 +123,6 @@ cage_sources = [
   'idle_inhibit_v1.c',
   'output.c',
   'seat.c',
-  'util.c',
   'view.c',
   'xdg_shell.c',
 ]
@@ -136,7 +135,6 @@ cage_headers = [
   'output.h',
   'seat.h',
   'server.h',
-  'util.h',
   'view.h',
   'xdg_shell.h',
 ]

output.c

@@ -36,7 +36,6 @@
 #include "output.h"
 #include "seat.h"
 #include "server.h"
-#include "util.h"
 #include "view.h"
 #if CAGE_HAS_XWAYLAND
 #include "xwayland.h"

util.c

@@ -1,36 +0,0 @@
-/*
- * Cage: A Wayland kiosk.
- *
- * Copyright (C) 2019 The Sway authors
- *
- * See the LICENSE file accompanying this file.
- */
-
-#include <math.h>
-
-#include "util.h"
-
-int
-scale_length(int length, int offset, float scale)
-{
-	/**
-	 * One does not simply multiply the width by the scale. We allow fractional
-	 * scaling, which means the resulting scaled width might be a decimal.
-	 * So we round it.
-	 *
-	 * But even this can produce undesirable results depending on the X or Y
-	 * offset of the box. For example, with a scale of 1.5, a box with
-	 * width=1 should not scale to 2px if its X coordinate is 1, because the
-	 * X coordinate would have scaled to 2px.
-	 */
-	return round((offset + length) * scale) - round(offset * scale);
-}
-
-void
-scale_box(struct wlr_box *box, float scale)
-{
-	box->width = scale_length(box->width, box->x, scale);
-	box->height = scale_length(box->height, box->y, scale);
-	box->x = round(box->x * scale);
-	box->y = round(box->y * scale);
-}

util.h

@@ -1,11 +0,0 @@
-#ifndef CG_UTIL_H
-#define CG_UTIL_H
-
-#include <wlr/util/box.h>
-
-/** Apply scale to a width or height. */
-int scale_length(int length, int offset, float scale);
-
-void scale_box(struct wlr_box *box, float scale);
-
-#endif