layout/style/nsStyleTransformMatrix.h@97036ab72558 (annotated)
layout/style/nsStyleTransformMatrix.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 | /* |
| michael@0 | 7 | * A class representing three matrices that can be used for style transforms. |
| michael@0 | 8 | */ |
| michael@0 | 9 | |
| michael@0 | 10 | #ifndef nsStyleTransformMatrix_h_ |
| michael@0 | 11 | #define nsStyleTransformMatrix_h_ |
| michael@0 | 12 | |
| michael@0 | 13 | #include "nsCSSValue.h" |
| michael@0 | 14 | #include "gfx3DMatrix.h" |
| michael@0 | 15 | |
| michael@0 | 16 | class nsStyleContext; |
| michael@0 | 17 | class nsPresContext; |
| michael@0 | 18 | struct nsRect; |
| michael@0 | 19 | |
| michael@0 | 20 | /** |
| michael@0 | 21 | * A helper to generate gfxMatrixes from css transform functions. |
| michael@0 | 22 | */ |
| michael@0 | 23 | namespace nsStyleTransformMatrix { |
| michael@0 | 24 | |
| michael@0 | 25 | /** |
| michael@0 | 26 | * Return the transform function, as an nsCSSKeyword, for the given |
| michael@0 | 27 | * nsCSSValue::Array from a transform list. |
| michael@0 | 28 | */ |
| michael@0 | 29 | nsCSSKeyword TransformFunctionOf(const nsCSSValue::Array* aData); |
| michael@0 | 30 | |
| michael@0 | 31 | float ProcessTranslatePart(const nsCSSValue& aValue, |
| michael@0 | 32 | nsStyleContext* aContext, |
| michael@0 | 33 | nsPresContext* aPresContext, |
| michael@0 | 34 | bool& aCanStoreInRuleTree, |
| michael@0 | 35 | nscoord aSize, |
| michael@0 | 36 | float aAppUnitsPerMatrixUnit); |
| michael@0 | 37 | |
| michael@0 | 38 | void |
| michael@0 | 39 | ProcessInterpolateMatrix(gfx3DMatrix& aMatrix, |
| michael@0 | 40 | const nsCSSValue::Array* aData, |
| michael@0 | 41 | nsStyleContext* aContext, |
| michael@0 | 42 | nsPresContext* aPresContext, |
| michael@0 | 43 | bool& aCanStoreInRuleTree, |
| michael@0 | 44 | nsRect& aBounds, float aAppUnitsPerMatrixUnit); |
| michael@0 | 45 | |
| michael@0 | 46 | /** |
| michael@0 | 47 | * Given an nsCSSValueList containing -moz-transform functions, |
| michael@0 | 48 | * returns a matrix containing the value of those functions. |
| michael@0 | 49 | * |
| michael@0 | 50 | * @param aData The nsCSSValueList containing the transform functions |
| michael@0 | 51 | * @param aContext The style context, used for unit conversion. |
| michael@0 | 52 | * @param aPresContext The presentation context, used for unit conversion. |
| michael@0 | 53 | * @param aCanStoreInRuleTree Set to false if the result cannot be cached |
| michael@0 | 54 | * in the rule tree, otherwise untouched. |
| michael@0 | 55 | * @param aBounds The frame's bounding rectangle. |
| michael@0 | 56 | * @param aAppUnitsPerMatrixUnit The number of app units per device pixel. |
| michael@0 | 57 | * |
| michael@0 | 58 | * aContext and aPresContext may be null if all of the (non-percent) |
| michael@0 | 59 | * length values in aData are already known to have been converted to |
| michael@0 | 60 | * eCSSUnit_Pixel (as they are in an nsStyleAnimation::Value) |
| michael@0 | 61 | */ |
| michael@0 | 62 | gfx3DMatrix ReadTransforms(const nsCSSValueList* aList, |
| michael@0 | 63 | nsStyleContext* aContext, |
| michael@0 | 64 | nsPresContext* aPresContext, |
| michael@0 | 65 | bool &aCanStoreInRuleTree, |
| michael@0 | 66 | nsRect& aBounds, |
| michael@0 | 67 | float aAppUnitsPerMatrixUnit); |
| michael@0 | 68 | |
| michael@0 | 69 | } // namespace nsStyleTransformMatrix |
| michael@0 | 70 | |
| michael@0 | 71 | #endif |
