gecko-dev/widget/public/nsIFontSizeIterator.h

52 строки
1.7 KiB
C++

/* -*- 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 nsIFontSizeIterator_h__
#define nsIFontSizeIterator_h__
#include "nsISupports.h"
class nsString;
// {285EF9B1-094A-11d3-9A87-0050046CDA96}
#define NS_IFONTSIZEITERATOR_IID \
{ 0x285ef9b1, 0x94a, 0x11d3, { 0x9a, 0x87, 0x0, 0x50, 0x4, 0x6c, 0xda, 0x96 } };
class nsIFontSizeIterator : public nsISupports
// Font sizes are identified with doubles (e.g., for the possibility of fractional sizes from MM, etc.).
// |Get| and |Advance| are distinct to facility wrapping with C++ objects as standard iterators.
{
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_IFONTSIZEITERATOR_IID)
NS_IMETHOD Reset() = 0;
// does not need to be called initially, returns iterator to initial state
NS_IMETHOD Get( double* aFontSize ) = 0;
// returns an error when no more sizes are available
NS_IMETHOD Advance() = 0;
// returns an error when no more sizes are available
};
#endif