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91 lines
3.5 KiB
C++
91 lines
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Mozilla Corporation
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*
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* Contributor(s):
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* Keith Schwarz <kschwarz@mozilla.com> (original author)
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* Matt Woodrow <mwoodrow@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* A class representing three matrices that can be used for style transforms.
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*/
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#ifndef nsStyleTransformMatrix_h_
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#define nsStyleTransformMatrix_h_
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#include "nsCSSValue.h"
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#include "gfxMatrix.h"
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#include "gfx3DMatrix.h"
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#include "nsRect.h"
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struct nsCSSValueList;
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class nsStyleContext;
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class nsPresContext;
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/**
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* A helper to generate gfxMatrixes from css transform functions.
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*/
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namespace nsStyleTransformMatrix {
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/**
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* Return the transform function, as an nsCSSKeyword, for the given
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* nsCSSValue::Array from a transform list.
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*/
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nsCSSKeyword TransformFunctionOf(const nsCSSValue::Array* aData);
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/**
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* Given an nsCSSValueList containing -moz-transform functions,
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* returns a matrix containing the value of those functions.
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*
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* @param aData The nsCSSValueList containing the transform functions
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* @param aContext The style context, used for unit conversion.
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* @param aPresContext The presentation context, used for unit conversion.
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* @param aCanStoreInRuleTree Set to false if the result cannot be cached
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* in the rule tree, otherwise untouched.
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* @param aBounds The frame's bounding rectangle.
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* @param aAppUnitsPerMatrixUnit The number of app units per device pixel.
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*
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* aContext and aPresContext may be null if all of the (non-percent)
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* length values in aData are already known to have been converted to
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* eCSSUnit_Pixel (as they are in an nsStyleAnimation::Value)
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*/
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gfx3DMatrix ReadTransforms(const nsCSSValueList* aList,
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nsStyleContext* aContext,
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nsPresContext* aPresContext,
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bool &aCanStoreInRuleTree,
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nsRect& aBounds,
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float aAppUnitsPerMatrixUnit);
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} // namespace nsStyleTransformMatrix
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#endif
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