gfx/src/nsTransform2D.cpp


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/* -*- 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;
}