/* -*- 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 */