gecko-dev/gfx/src/nsTransform2D.cpp
2012-05-21 12:12:37 +01:00

24 lines
745 B
C++

/* -*- 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;
}