gfx/src/nsTransform2D.cpp
author David Zbarsky <dzbarsky@gmail.com>
Tue, 21 Aug 2012 00:06:46 -0400
changeset 102890 3000e30d082c63adf8222aa82e47245646806ea6
parent 94475 f4157e8c410708d76703f19e4dfb61859bfe32d8
child 389027 5f74d262924171a8fa0b4483a64f4cac34c4c9b8
permissions -rw-r--r--
Bug 784004 - Don't include Layers.h everywhere Part 3 r=nical

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */


#include "nsTransform2D.h"

void nsTransform2D :: TransformCoord(nscoord *ptX, nscoord *ptY) const
{
  *ptX = NSToCoordRound(*ptX * m00 + m20);
  *ptY = NSToCoordRound(*ptY * m11 + m21);
}

void nsTransform2D :: TransformCoord(nscoord *aX, nscoord *aY, nscoord *aWidth, nscoord *aHeight) const
{
  nscoord x2 = *aX + *aWidth;
  nscoord y2 = *aY + *aHeight;
  TransformCoord(aX, aY);
  TransformCoord(&x2, &y2);
  *aWidth = x2 - *aX;
  *aHeight = y2 - *aY;
}