gecko-dev/layout/style/nsStyleUtil.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape 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/NPL/
*
* 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 Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#ifndef nsStyleUtil_h___
#define nsStyleUtil_h___
#include "nslayout.h"
#include "nsCoord.h"
#include "nsIPresContext.h"
#include "nsILinkHandler.h" // for nsLinkState
class nsIStyleContext;
struct nsStyleColor;
enum nsFontSizeType {
eFontSize_HTML = 1,
eFontSize_CSS = 2
};
// Style utility functions
class nsStyleUtil {
public:
static float GetScalingFactor(PRInt32 aScaler);
static nscoord CalcFontPointSize(PRInt32 aHTMLSize, PRInt32 aBasePointSize,
float aScalingFactor, nsIPresContext* aPresContext,
nsFontSizeType aFontSizeType = eFontSize_HTML);
static PRInt32 FindNextSmallerFontSize(nscoord aFontSize, PRInt32 aBasePointSize,
float aScalingFactor, nsIPresContext* aPresContext,
nsFontSizeType aFontSizeType = eFontSize_HTML);
static PRInt32 FindNextLargerFontSize(nscoord aFontSize, PRInt32 aBasePointSize,
float aScalingFactor, nsIPresContext* aPresContext,
nsFontSizeType aFontSizeType = eFontSize_HTML);
static PRInt32 ConstrainFontWeight(PRInt32 aWeight);
static const nsStyleColor* FindNonTransparentBackground(nsIStyleContext* aContext,
PRBool aStartAtParent = PR_FALSE);
static PRBool IsHTMLLink(nsIContent *aContent, nsIAtom *aTag, nsIPresContext *aPresContext, nsLinkState *aState);
static PRBool IsSimpleXlink(nsIContent *aContent, nsIPresContext *aPresContext, nsLinkState *aState);
};
#endif /* nsStyleUtil_h___ */