gfx/src/nsPoint.h@97036ab72558 (annotated)
gfx/src/nsPoint.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #ifndef NSPOINT_H |
| michael@0 | 7 | #define NSPOINT_H |
| michael@0 | 8 | |
| michael@0 | 9 | #include "nsCoord.h" |
| michael@0 | 10 | #include "mozilla/gfx/BaseSize.h" |
| michael@0 | 11 | #include "mozilla/gfx/BasePoint.h" |
| michael@0 | 12 | #include "nsSize.h" |
| michael@0 | 13 | |
| michael@0 | 14 | struct nsIntPoint; |
| michael@0 | 15 | |
| michael@0 | 16 | // nsPoint represents a point in app units. |
| michael@0 | 17 | |
| michael@0 | 18 | struct nsPoint : public mozilla::gfx::BasePoint<nscoord, nsPoint> { |
| michael@0 | 19 | typedef mozilla::gfx::BasePoint<nscoord, nsPoint> Super; |
| michael@0 | 20 | |
| michael@0 | 21 | nsPoint() : Super() {} |
| michael@0 | 22 | nsPoint(const nsPoint& aPoint) : Super(aPoint) {} |
| michael@0 | 23 | nsPoint(nscoord aX, nscoord aY) : Super(aX, aY) {} |
| michael@0 | 24 | |
| michael@0 | 25 | inline nsIntPoint ScaleToNearestPixels(float aXScale, float aYScale, |
| michael@0 | 26 | nscoord aAppUnitsPerPixel) const; |
| michael@0 | 27 | inline nsIntPoint ToNearestPixels(nscoord aAppUnitsPerPixel) const; |
| michael@0 | 28 | |
| michael@0 | 29 | // Converts this point from aFromAPP, an appunits per pixel ratio, to aToAPP. |
| michael@0 | 30 | inline nsPoint ConvertAppUnits(int32_t aFromAPP, int32_t aToAPP) const; |
| michael@0 | 31 | }; |
| michael@0 | 32 | |
| michael@0 | 33 | // nsIntPoint represents a point in one of the types of pixels. |
| michael@0 | 34 | // Uses of nsIntPoint should eventually be converted to CSSIntPoint, |
| michael@0 | 35 | // LayoutDeviceIntPoint, etc. (see layout/base/Units.h). |
| michael@0 | 36 | |
| michael@0 | 37 | struct nsIntPoint : public mozilla::gfx::BasePoint<int32_t, nsIntPoint> { |
| michael@0 | 38 | typedef mozilla::gfx::BasePoint<int32_t, nsIntPoint> Super; |
| michael@0 | 39 | |
| michael@0 | 40 | nsIntPoint() : Super() {} |
| michael@0 | 41 | nsIntPoint(const nsIntPoint& aPoint) : Super(aPoint) {} |
| michael@0 | 42 | nsIntPoint(int32_t aX, int32_t aY) : Super(aX, aY) {} |
| michael@0 | 43 | |
| michael@0 | 44 | inline nsPoint ToAppUnits(nscoord aAppUnitsPerPixel) const; |
| michael@0 | 45 | }; |
| michael@0 | 46 | |
| michael@0 | 47 | inline nsIntPoint |
| michael@0 | 48 | nsPoint::ScaleToNearestPixels(float aXScale, float aYScale, |
| michael@0 | 49 | nscoord aAppUnitsPerPixel) const |
| michael@0 | 50 | { |
| michael@0 | 51 | return nsIntPoint( |
| michael@0 | 52 | NSToIntRoundUp(NSAppUnitsToDoublePixels(x, aAppUnitsPerPixel) * aXScale), |
| michael@0 | 53 | NSToIntRoundUp(NSAppUnitsToDoublePixels(y, aAppUnitsPerPixel) * aYScale)); |
| michael@0 | 54 | } |
| michael@0 | 55 | |
| michael@0 | 56 | inline nsIntPoint |
| michael@0 | 57 | nsPoint::ToNearestPixels(nscoord aAppUnitsPerPixel) const |
| michael@0 | 58 | { |
| michael@0 | 59 | return ScaleToNearestPixels(1.0f, 1.0f, aAppUnitsPerPixel); |
| michael@0 | 60 | } |
| michael@0 | 61 | |
| michael@0 | 62 | inline nsPoint |
| michael@0 | 63 | nsPoint::ConvertAppUnits(int32_t aFromAPP, int32_t aToAPP) const |
| michael@0 | 64 | { |
| michael@0 | 65 | if (aFromAPP != aToAPP) { |
| michael@0 | 66 | nsPoint point; |
| michael@0 | 67 | point.x = NSToCoordRound(NSCoordScale(x, aFromAPP, aToAPP)); |
| michael@0 | 68 | point.y = NSToCoordRound(NSCoordScale(y, aFromAPP, aToAPP)); |
| michael@0 | 69 | return point; |
| michael@0 | 70 | } |
| michael@0 | 71 | return *this; |
| michael@0 | 72 | } |
| michael@0 | 73 | |
| michael@0 | 74 | // app units are integer multiples of pixels, so no rounding needed |
| michael@0 | 75 | inline nsPoint |
| michael@0 | 76 | nsIntPoint::ToAppUnits(nscoord aAppUnitsPerPixel) const |
| michael@0 | 77 | { |
| michael@0 | 78 | return nsPoint(NSIntPixelsToAppUnits(x, aAppUnitsPerPixel), |
| michael@0 | 79 | NSIntPixelsToAppUnits(y, aAppUnitsPerPixel)); |
| michael@0 | 80 | } |
| michael@0 | 81 | |
| michael@0 | 82 | #endif /* NSPOINT_H */ |
