Index: uspace/lib/gfx/src/coord.c
===================================================================
--- uspace/lib/gfx/src/coord.c	(revision 648e2ac6aebff5e36eb48bb2c7ca718acb14c18a)
+++ uspace/lib/gfx/src/coord.c	(revision 648e2ac6aebff5e36eb48bb2c7ca718acb14c18a)
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2019 Jiri Svoboda
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libgfx
+ * @{
+ */
+/**
+ * @file Coordinates
+ */
+
+#include <gfx/coord.h>
+
+/** Add two vectors.
+ *
+ * @param a First vector
+ * @param b Second vector
+ * @param d Destination
+ */
+void gfx_coord2_add(gfx_coord2_t *a, gfx_coord2_t *b, gfx_coord2_t *d)
+{
+	d->x = a->x + b->x;
+	d->y = a->y + b->y;
+}
+
+/** Subtract two vectors.
+ *
+ * @param a First vector
+ * @param b Second vector
+ * @param d Destination
+ */
+void gfx_coord2_subtract(gfx_coord2_t *a, gfx_coord2_t *b, gfx_coord2_t *d)
+{
+	d->x = a->x - b->x;
+	d->y = a->y - b->y;
+}
+
+/** Move (translate) rectangle.
+ *
+ * @param trans Translation
+ * @param src Source rectangle
+ * @param dest Destination rectangle
+ */
+void gfx_rect_translate(gfx_coord2_t *trans, gfx_rect_t *src, gfx_rect_t *dest)
+{
+	gfx_coord2_add(trans, &src->p0, &dest->p0);
+	gfx_coord2_add(trans, &src->p1, &dest->p1);
+}
+
+/** @}
+ */