mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-02 18:08:58 +00:00
110 lines
4.3 KiB
C++
110 lines
4.3 KiB
C++
/* -*- 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
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* 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 ***** */
|
|
#ifndef nsStyleUtil_h___
|
|
#define nsStyleUtil_h___
|
|
|
|
#include "nsCoord.h"
|
|
#include "nsPresContext.h"
|
|
#include "nsILinkHandler.h" // for nsLinkState
|
|
|
|
struct nsStyleBackground;
|
|
|
|
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, nsPresContext* aPresContext,
|
|
nsFontSizeType aFontSizeType = eFontSize_HTML);
|
|
|
|
static nscoord FindNextSmallerFontSize(nscoord aFontSize, PRInt32 aBasePointSize,
|
|
float aScalingFactor, nsPresContext* aPresContext,
|
|
nsFontSizeType aFontSizeType = eFontSize_HTML);
|
|
|
|
static nscoord FindNextLargerFontSize(nscoord aFontSize, PRInt32 aBasePointSize,
|
|
float aScalingFactor, nsPresContext* aPresContext,
|
|
nsFontSizeType aFontSizeType = eFontSize_HTML);
|
|
|
|
static PRInt32 ConstrainFontWeight(PRInt32 aWeight);
|
|
|
|
static PRBool IsHTMLLink(nsIContent *aContent, nsIAtom *aTag, nsPresContext *aPresContext, nsLinkState *aState);
|
|
static PRBool IsLink(nsIContent *aContent, nsPresContext *aPresContext, nsLinkState *aState);
|
|
|
|
static PRBool DashMatchCompare(const nsAString& aAttributeValue,
|
|
const nsAString& aSelectorValue,
|
|
const nsStringComparator& aComparator);
|
|
|
|
static void EscapeCSSString(const nsString& aString, nsAString& aReturn);
|
|
|
|
/*
|
|
* Convert an author-provided floating point number to an integer (0
|
|
* ... 255) appropriate for use in the alpha component of a color.
|
|
*/
|
|
static PRUint8 FloatToColorComponent(float aAlpha)
|
|
{
|
|
NS_ASSERTION(0.0 <= aAlpha && aAlpha <= 1.0, "out of range");
|
|
return NSToIntRound(aAlpha * 255);
|
|
}
|
|
|
|
/*
|
|
* Convert the alpha component of an nscolor (0 ... 255) to the
|
|
* floating point number with the least accurate *decimal*
|
|
* representation that is converted to that color.
|
|
*
|
|
* Should be used only by serialization code.
|
|
*/
|
|
static float ColorComponentToFloat(PRUint8 aAlpha);
|
|
|
|
/*
|
|
* Does this child count as significant for selector matching?
|
|
*/
|
|
static PRBool IsSignificantChild(nsIContent* aChild,
|
|
PRBool aTextIsSignificant,
|
|
PRBool aWhitespaceIsSignificant);
|
|
};
|
|
|
|
|
|
#endif /* nsStyleUtil_h___ */
|