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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/. */
#ifndef NSSIZE_H
#define NSSIZE_H
#include "nsCoord.h"
#include "mozilla/gfx/BaseSize.h"
#include "mozilla/gfx/Point.h"
// Maximum allowable size
#define NS_MAXSIZE nscoord_MAX
typedef mozilla::gfx::IntSize nsIntSize;
struct nsSize : public mozilla::gfx::BaseSize<nscoord, nsSize> {
typedef mozilla::gfx::BaseSize<nscoord, nsSize> Super;
nsSize() : Super() {}
nsSize(nscoord aWidth, nscoord aHeight) : Super(aWidth, aHeight) {}
inline mozilla::gfx::IntSize ScaleToNearestPixels(float aXScale, float aYScale,
nscoord aAppUnitsPerPixel) const;
inline mozilla::gfx::IntSize ToNearestPixels(nscoord aAppUnitsPerPixel) const;
/**
* Return this size scaled to a different appunits per pixel (APP) ratio.
* @param aFromAPP the APP to scale from
* @param aToAPP the APP to scale to
*/
MOZ_MUST_USE inline nsSize
ScaleToOtherAppUnits(int32_t aFromAPP, int32_t aToAPP) const;
};
inline mozilla::gfx::IntSize
nsSize::ScaleToNearestPixels(float aXScale, float aYScale,
nscoord aAppUnitsPerPixel) const
{
return mozilla::gfx::IntSize(
NSToIntRoundUp(NSAppUnitsToDoublePixels(width, aAppUnitsPerPixel) * aXScale),
NSToIntRoundUp(NSAppUnitsToDoublePixels(height, aAppUnitsPerPixel) * aYScale));
}
inline mozilla::gfx::IntSize
nsSize::ToNearestPixels(nscoord aAppUnitsPerPixel) const
{
return ScaleToNearestPixels(1.0f, 1.0f, aAppUnitsPerPixel);
}
inline nsSize
nsSize::ScaleToOtherAppUnits(int32_t aFromAPP, int32_t aToAPP) const {
if (aFromAPP != aToAPP) {
nsSize size;
size.width = NSToCoordRound(NSCoordScale(width, aFromAPP, aToAPP));
size.height = NSToCoordRound(NSCoordScale(height, aFromAPP, aToAPP));
return size;
}
return *this;
}
inline nsSize
IntSizeToAppUnits(mozilla::gfx::IntSize aSize, nscoord aAppUnitsPerPixel)
{
return nsSize(NSIntPixelsToAppUnits(aSize.width, aAppUnitsPerPixel),
NSIntPixelsToAppUnits(aSize.height, aAppUnitsPerPixel));
}
#endif /* NSSIZE_H */
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