diff options
Diffstat (limited to 'gfx/src/nsTransform2D.cpp')
-rw-r--r-- | gfx/src/nsTransform2D.cpp | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/gfx/src/nsTransform2D.cpp b/gfx/src/nsTransform2D.cpp new file mode 100644 index 0000000000..655511a626 --- /dev/null +++ b/gfx/src/nsTransform2D.cpp @@ -0,0 +1,22 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* 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; +} |