/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is mozilla.org code. * * The Initial Developer of the Original Code is * Mozilla Corporation * * Contributor(s): * Keith Schwarz (original author) * Matt Woodrow * * Alternatively, the contents of this file may be used under the terms of * either of the GNU General Public License Version 2 or later (the "GPL"), * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ /* * A class representing three matrices that can be used for style transforms. */ #ifndef nsStyleTransformMatrix_h_ #define nsStyleTransformMatrix_h_ #include "nsCSSValue.h" #include "gfxMatrix.h" #include "gfx3DMatrix.h" #include "nsRect.h" struct nsCSSValueList; class nsStyleContext; class nsPresContext; /** * A helper class to generate gfxMatrixes from css transform functions. */ class nsStyleTransformMatrix { public: /** * Return the transform function, as an nsCSSKeyword, for the given * nsCSSValue::Array from a transform list. */ static nsCSSKeyword TransformFunctionOf(const nsCSSValue::Array* aData); /** * Given an nsCSSValue::Array* containing a -moz-transform function, * returns a matrix containing the value of that function. * * @param aData The nsCSSValue::Array* containing the transform function. * @param aContext The style context, used for unit conversion. * @param aPresContext The presentation context, used for unit conversion. * @param aCanStoreInRuleTree Set to false if the result cannot be cached * in the rule tree, otherwise untouched. * @param aBounds The frame's bounding rectangle. * @param aAppUnitsPerMatrixUnit The number of app units per device pixel. * * aContext and aPresContext may be null if all of the (non-percent) * length values in aData are already known to have been converted to * eCSSUnit_Pixel (as they are in an nsStyleAnimation::Value) */ static gfx3DMatrix MatrixForTransformFunction(const nsCSSValue::Array* aData, nsStyleContext* aContext, nsPresContext* aPresContext, PRBool& aCanStoreInRuleTree, nsRect& aBounds, float aAppUnitsPerMatrixUnit); /** * The same as MatrixForTransformFunction, but for a list of transform * functions. */ static gfx3DMatrix ReadTransforms(const nsCSSValueList* aList, nsStyleContext* aContext, nsPresContext* aPresContext, PRBool &aCanStoreInRuleTree, nsRect& aBounds, float aAppUnitsPerMatrixUnit); private: static gfx3DMatrix ProcessMatrix(const nsCSSValue::Array *aData, nsStyleContext *aContext, nsPresContext *aPresContext, PRBool &aCanStoreInRuleTree, nsRect& aBounds, float aAppUnitsPerMatrixUnit, PRBool *aPercentX = nsnull, PRBool *aPercentY = nsnull); static gfx3DMatrix ProcessMatrix3D(const nsCSSValue::Array *aData); static gfx3DMatrix ProcessInterpolateMatrix(const nsCSSValue::Array *aData, nsStyleContext *aContext, nsPresContext *aPresContext, PRBool &aCanStoreInRuleTree, nsRect& aBounds, float aAppUnitsPerMatrixUnit); static gfx3DMatrix ProcessTranslateX(const nsCSSValue::Array *aData, nsStyleContext *aContext, nsPresContext *aPresContext, PRBool &aCanStoreInRuleTree, nsRect& aBounds, float aAppUnitsPerMatrixUnit); static gfx3DMatrix ProcessTranslateY(const nsCSSValue::Array *aData, nsStyleContext *aContext, nsPresContext *aPresContext, PRBool &aCanStoreInRuleTree, nsRect& aBounds, float aAppUnitsPerMatrixUnit); static gfx3DMatrix ProcessTranslateZ(const nsCSSValue::Array *aData, nsStyleContext *aContext, nsPresContext *aPresContext, PRBool &aCanStoreInRuleTree, float aAppUnitsPerMatrixUnit); static gfx3DMatrix ProcessTranslate(const nsCSSValue::Array *aData, nsStyleContext *aContext, nsPresContext *aPresContext, PRBool &aCanStoreInRuleTree, nsRect& aBounds, float aAppUnitsPerMatrixUnit); static gfx3DMatrix ProcessTranslate3D(const nsCSSValue::Array *aData, nsStyleContext *aContext, nsPresContext *aPresContext, PRBool &aCanStoreInRuleTree, nsRect& aBounds, float aAppUnitsPerMatrixUnit); static gfx3DMatrix ProcessScaleHelper(float aXScale, float aYScale, float aZScale); static gfx3DMatrix ProcessScaleX(const nsCSSValue::Array *aData); static gfx3DMatrix ProcessScaleY(const nsCSSValue::Array *aData); static gfx3DMatrix ProcessScaleZ(const nsCSSValue::Array *aData); static gfx3DMatrix ProcessScale(const nsCSSValue::Array *aData); static gfx3DMatrix ProcessScale3D(const nsCSSValue::Array *aData); static gfx3DMatrix ProcessSkewHelper(double aXAngle, double aYAngle); static gfx3DMatrix ProcessSkewX(const nsCSSValue::Array *aData); static gfx3DMatrix ProcessSkewY(const nsCSSValue::Array *aData); static gfx3DMatrix ProcessSkew(const nsCSSValue::Array *aData); static gfx3DMatrix ProcessRotateX(const nsCSSValue::Array *aData); static gfx3DMatrix ProcessRotateY(const nsCSSValue::Array *aData); static gfx3DMatrix ProcessRotateZ(const nsCSSValue::Array *aData); static gfx3DMatrix ProcessRotate3D(const nsCSSValue::Array *aData); static gfx3DMatrix ProcessPerspective(const nsCSSValue::Array *aData, nsStyleContext *aContext, nsPresContext *aPresContext, PRBool &aCanStoreInRuleTree, float aAppUnitsPerMatrixUnit); }; #endif