The Tor Browser / file comparison
comparison: gfx/src/nsPoint.h
gfx/src/nsPoint.h
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:994d57ecf93e |
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef NSPOINT_H | |
| 7 #define NSPOINT_H | |
| 8 | |
| 9 #include "nsCoord.h" | |
| 10 #include "mozilla/gfx/BaseSize.h" | |
| 11 #include "mozilla/gfx/BasePoint.h" | |
| 12 #include "nsSize.h" | |
| 13 | |
| 14 struct nsIntPoint; | |
| 15 | |
| 16 // nsPoint represents a point in app units. | |
| 17 | |
| 18 struct nsPoint : public mozilla::gfx::BasePoint<nscoord, nsPoint> { | |
| 19 typedef mozilla::gfx::BasePoint<nscoord, nsPoint> Super; | |
| 20 | |
| 21 nsPoint() : Super() {} | |
| 22 nsPoint(const nsPoint& aPoint) : Super(aPoint) {} | |
| 23 nsPoint(nscoord aX, nscoord aY) : Super(aX, aY) {} | |
| 24 | |
| 25 inline nsIntPoint ScaleToNearestPixels(float aXScale, float aYScale, | |
| 26 nscoord aAppUnitsPerPixel) const; | |
| 27 inline nsIntPoint ToNearestPixels(nscoord aAppUnitsPerPixel) const; | |
| 28 | |
| 29 // Converts this point from aFromAPP, an appunits per pixel ratio, to aToAPP. | |
| 30 inline nsPoint ConvertAppUnits(int32_t aFromAPP, int32_t aToAPP) const; | |
| 31 }; | |
| 32 | |
| 33 // nsIntPoint represents a point in one of the types of pixels. | |
| 34 // Uses of nsIntPoint should eventually be converted to CSSIntPoint, | |
| 35 // LayoutDeviceIntPoint, etc. (see layout/base/Units.h). | |
| 36 | |
| 37 struct nsIntPoint : public mozilla::gfx::BasePoint<int32_t, nsIntPoint> { | |
| 38 typedef mozilla::gfx::BasePoint<int32_t, nsIntPoint> Super; | |
| 39 | |
| 40 nsIntPoint() : Super() {} | |
| 41 nsIntPoint(const nsIntPoint& aPoint) : Super(aPoint) {} | |
| 42 nsIntPoint(int32_t aX, int32_t aY) : Super(aX, aY) {} | |
| 43 | |
| 44 inline nsPoint ToAppUnits(nscoord aAppUnitsPerPixel) const; | |
| 45 }; | |
| 46 | |
| 47 inline nsIntPoint | |
| 48 nsPoint::ScaleToNearestPixels(float aXScale, float aYScale, | |
| 49 nscoord aAppUnitsPerPixel) const | |
| 50 { | |
| 51 return nsIntPoint( | |
| 52 NSToIntRoundUp(NSAppUnitsToDoublePixels(x, aAppUnitsPerPixel) * aXScale), | |
| 53 NSToIntRoundUp(NSAppUnitsToDoublePixels(y, aAppUnitsPerPixel) * aYScale)); | |
| 54 } | |
| 55 | |
| 56 inline nsIntPoint | |
| 57 nsPoint::ToNearestPixels(nscoord aAppUnitsPerPixel) const | |
| 58 { | |
| 59 return ScaleToNearestPixels(1.0f, 1.0f, aAppUnitsPerPixel); | |
| 60 } | |
| 61 | |
| 62 inline nsPoint | |
| 63 nsPoint::ConvertAppUnits(int32_t aFromAPP, int32_t aToAPP) const | |
| 64 { | |
| 65 if (aFromAPP != aToAPP) { | |
| 66 nsPoint point; | |
| 67 point.x = NSToCoordRound(NSCoordScale(x, aFromAPP, aToAPP)); | |
| 68 point.y = NSToCoordRound(NSCoordScale(y, aFromAPP, aToAPP)); | |
| 69 return point; | |
| 70 } | |
| 71 return *this; | |
| 72 } | |
| 73 | |
| 74 // app units are integer multiples of pixels, so no rounding needed | |
| 75 inline nsPoint | |
| 76 nsIntPoint::ToAppUnits(nscoord aAppUnitsPerPixel) const | |
| 77 { | |
| 78 return nsPoint(NSIntPixelsToAppUnits(x, aAppUnitsPerPixel), | |
| 79 NSIntPixelsToAppUnits(y, aAppUnitsPerPixel)); | |
| 80 } | |
| 81 | |
| 82 #endif /* NSPOINT_H */ |
