mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
106 lines
4.3 KiB
C++
106 lines
4.3 KiB
C++
/* vim: set shiftwidth=4 tabstop=8 autoindent cindent expandtab: */
|
|
/* ***** 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 nsMediaFeatures.
|
|
*
|
|
* The Initial Developer of the Original Code is the Mozilla Foundation.
|
|
* Portions created by the Initial Developer are Copyright (C) 2008
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* L. David Baron <dbaron@dbaron.org>, Mozilla Corporation (original author)
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either 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 ***** */
|
|
|
|
/* the features that media queries can test */
|
|
|
|
#ifndef nsMediaFeatures_h_
|
|
#define nsMediaFeatures_h_
|
|
|
|
#include "nscore.h"
|
|
|
|
class nsIAtom;
|
|
class nsPresContext;
|
|
class nsCSSValue;
|
|
|
|
struct nsMediaFeature;
|
|
typedef nsresult
|
|
(* nsMediaFeatureValueGetter)(nsPresContext* aPresContext,
|
|
const nsMediaFeature* aFeature,
|
|
nsCSSValue& aResult);
|
|
|
|
struct nsMediaFeature {
|
|
nsIAtom **mName; // extra indirection to point to nsGkAtoms members
|
|
|
|
enum RangeType { eMinMaxAllowed, eMinMaxNotAllowed };
|
|
RangeType mRangeType;
|
|
|
|
enum ValueType {
|
|
// All value types allow eCSSUnit_Null to indicate that no value
|
|
// was given (in addition to the types listed below).
|
|
eLength, // values are such that nsCSSValue::IsLengthUnit() is true
|
|
eInteger, // values are eCSSUnit_Integer
|
|
eFloat, // values are eCSSUnit_Number
|
|
eBoolInteger,// values are eCSSUnit_Integer (0, -0, or 1 only)
|
|
eIntRatio, // values are eCSSUnit_Array of two eCSSUnit_Integer
|
|
eResolution, // values are in eCSSUnit_Inch (for dpi) or
|
|
// eCSSUnit_Centimeter (for dpcm)
|
|
eEnumerated // values are eCSSUnit_Enumerated (uses keyword table)
|
|
|
|
// Note that a number of pieces of code (both for parsing and
|
|
// for matching of valueless expressions) assume that all numeric
|
|
// value types cannot be negative. The parsing code also does
|
|
// not allow zeros in eIntRatio types.
|
|
};
|
|
ValueType mValueType;
|
|
|
|
union {
|
|
// In static arrays, it's the first member that's initialized. We
|
|
// need that to be void* so we can initialize both other types.
|
|
// This member should never be accessed by name.
|
|
const void* mInitializer_;
|
|
// If mValueType == eEnumerated: const PRInt32*: keyword table in
|
|
// the same format as the keyword tables in nsCSSProps.
|
|
const PRInt32* mKeywordTable;
|
|
// If mGetter == GetSystemMetric (which implies mValueType ==
|
|
// eBoolInteger): nsIAtom * const *, for the system metric.
|
|
nsIAtom * const * mMetric;
|
|
} mData;
|
|
|
|
// A function that returns the current value for this feature for a
|
|
// given presentation. If it returns eCSSUnit_Null, the feature is
|
|
// not present.
|
|
nsMediaFeatureValueGetter mGetter;
|
|
};
|
|
|
|
class nsMediaFeatures {
|
|
public:
|
|
// Terminated with an entry whose mName is null.
|
|
static const nsMediaFeature features[];
|
|
};
|
|
|
|
#endif /* !defined(nsMediaFeatures_h_) */
|