gecko/layout/base/Units.h

32 lines
1.1 KiB
C++

/* -*- Mode: C++; tab-width: 20; 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/. */
#ifndef MOZ_UNITS_H_
#define MOZ_UNITS_H_
#include "mozilla/gfx/Point.h"
#include "nsDeviceContext.h"
namespace mozilla {
// The pixels that content authors use to specify sizes in.
struct CSSPixel {
static gfx::PointTyped<CSSPixel> FromAppUnits(const nsPoint &pt) {
return gfx::PointTyped<CSSPixel>(NSAppUnitsToFloatPixels(pt.x, float(nsDeviceContext::AppUnitsPerCSSPixel())),
NSAppUnitsToFloatPixels(pt.y, float(nsDeviceContext::AppUnitsPerCSSPixel())));
}
static nsPoint ToAppUnits(const gfx::PointTyped<CSSPixel> &pt) {
return nsPoint(NSFloatPixelsToAppUnits(pt.x, float(nsDeviceContext::AppUnitsPerCSSPixel())),
NSFloatPixelsToAppUnits(pt.y, float(nsDeviceContext::AppUnitsPerCSSPixel())));
}
};
typedef gfx::PointTyped<CSSPixel> CSSPoint;
};
#endif