71 lines
2.3 KiB
C
71 lines
2.3 KiB
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/. */
|
|
|
|
#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 */
|