michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef NSSIZE_H
michael@0: #define NSSIZE_H
michael@0: 
michael@0: #include "nsCoord.h"
michael@0: #include "mozilla/gfx/BaseSize.h"
michael@0: #include "mozilla/gfx/Point.h"
michael@0: 
michael@0: // Maximum allowable size
michael@0: #define NS_MAXSIZE nscoord_MAX
michael@0: 
michael@0: struct nsIntSize;
michael@0: typedef nsIntSize gfxIntSize;
michael@0: 
michael@0: struct nsSize : public mozilla::gfx::BaseSize<nscoord, nsSize> {
michael@0:   typedef mozilla::gfx::BaseSize<nscoord, nsSize> Super;
michael@0: 
michael@0:   nsSize() : Super() {}
michael@0:   nsSize(nscoord aWidth, nscoord aHeight) : Super(aWidth, aHeight) {}
michael@0: 
michael@0:   inline nsIntSize ScaleToNearestPixels(float aXScale, float aYScale,
michael@0:                                         nscoord aAppUnitsPerPixel) const;
michael@0:   inline nsIntSize ToNearestPixels(nscoord aAppUnitsPerPixel) const;
michael@0: 
michael@0:   // Converts this size from aFromAPP, an appunits per pixel ratio, to aToAPP.
michael@0:   inline nsSize ConvertAppUnits(int32_t aFromAPP, int32_t aToAPP) const;
michael@0: };
michael@0: 
michael@0: struct nsIntSize : public mozilla::gfx::BaseSize<int32_t, nsIntSize> {
michael@0:   typedef mozilla::gfx::BaseSize<int32_t, nsIntSize> Super;
michael@0: 
michael@0:   nsIntSize() : Super() {}
michael@0:   nsIntSize(int32_t aWidth, int32_t aHeight) : Super(aWidth, aHeight) {}
michael@0: 
michael@0:   inline nsSize ToAppUnits(nscoord aAppUnitsPerPixel) const;
michael@0:   mozilla::gfx::IntSize ToIntSize() const
michael@0:   {
michael@0:     return mozilla::gfx::IntSize(width, height);
michael@0:   };
michael@0: };
michael@0: 
michael@0: inline nsIntSize
michael@0: nsSize::ScaleToNearestPixels(float aXScale, float aYScale,
michael@0:                              nscoord aAppUnitsPerPixel) const
michael@0: {
michael@0:   return nsIntSize(
michael@0:       NSToIntRoundUp(NSAppUnitsToDoublePixels(width, aAppUnitsPerPixel) * aXScale),
michael@0:       NSToIntRoundUp(NSAppUnitsToDoublePixels(height, aAppUnitsPerPixel) * aYScale));
michael@0: }
michael@0: 
michael@0: inline nsIntSize
michael@0: nsSize::ToNearestPixels(nscoord aAppUnitsPerPixel) const
michael@0: {
michael@0:   return ScaleToNearestPixels(1.0f, 1.0f, aAppUnitsPerPixel);
michael@0: }
michael@0: 
michael@0: inline nsSize
michael@0: nsSize::ConvertAppUnits(int32_t aFromAPP, int32_t aToAPP) const {
michael@0:   if (aFromAPP != aToAPP) {
michael@0:     nsSize size;
michael@0:     size.width = NSToCoordRound(NSCoordScale(width, aFromAPP, aToAPP));
michael@0:     size.height = NSToCoordRound(NSCoordScale(height, aFromAPP, aToAPP));
michael@0:     return size;
michael@0:   }
michael@0:   return *this;
michael@0: }
michael@0: 
michael@0: inline nsSize
michael@0: nsIntSize::ToAppUnits(nscoord aAppUnitsPerPixel) const
michael@0: {
michael@0:   return nsSize(NSIntPixelsToAppUnits(width, aAppUnitsPerPixel),
michael@0:                 NSIntPixelsToAppUnits(height, aAppUnitsPerPixel));
michael@0: }
michael@0: 
michael@0: #endif /* NSSIZE_H */