gecko/gfx/thebes/gfxTypes.h
2011-09-07 00:14:30 +01:00

116 lines
5.0 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* ***** 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 Oracle Corporation code.
*
* The Initial Developer of the Original Code is Oracle Corporation.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Stuart Parmenter <pavlov@pavlov.net>
*
* 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 ***** */
#ifndef GFX_TYPES_H
#define GFX_TYPES_H
#include "prtypes.h"
#include "nsAtomicRefcnt.h"
/**
* Currently needs to be 'double' for Cairo compatibility. Could
* become 'float', perhaps, in some configurations.
*/
typedef double gfxFloat;
#if defined(IMPL_THEBES)
# define THEBES_API NS_EXPORT
#else
# define THEBES_API NS_IMPORT
#endif
/**
* gfx errors
*/
/* nsIDeviceContextSpec.h defines a set of printer errors */
#define NS_ERROR_GFX_GENERAL_BASE (50)
/* Font cmap is strangely structured - avoid this font! */
#define NS_ERROR_GFX_CMAP_MALFORMED \
NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_GFX,NS_ERROR_GFX_GENERAL_BASE+1)
/**
* Priority of a line break opportunity.
*
* eNoBreak The line has no break opportunities
* eWordWrapBreak The line has a break opportunity only within a word. With
* word-wrap: break-word we will break at this point only if
* there are no other break opportunities in the line.
* eNormalBreak The line has a break opportunity determined by the standard
* line-breaking algorithm.
*
* Future expansion: split eNormalBreak into multiple priorities, e.g.
* punctuation break and whitespace break (bug 389710).
* As and when we implement it, text-wrap: unrestricted will
* mean that priorities are ignored and all line-break
* opportunities are equal.
*
* @see gfxTextRun::BreakAndMeasureText
* @see nsLineLayout::NotifyOptionalBreakPosition
*/
enum gfxBreakPriority {
eNoBreak = 0,
eWordWrapBreak,
eNormalBreak
};
#define THEBES_INLINE_DECL_THREADSAFE_REFCOUNTING(_class) \
public: \
nsrefcnt AddRef(void) { \
NS_PRECONDITION(PRInt32(mRefCnt) >= 0, "illegal refcnt"); \
nsrefcnt count = NS_AtomicIncrementRefcnt(mRefCnt); \
NS_LOG_ADDREF(this, count, #_class, sizeof(*this)); \
return count; \
} \
nsrefcnt Release(void) { \
NS_PRECONDITION(0 != mRefCnt, "dup release"); \
nsrefcnt count = NS_AtomicDecrementRefcnt(mRefCnt); \
NS_LOG_RELEASE(this, count, #_class); \
if (count == 0) { \
mRefCnt = 1; /* stabilize */ \
delete this; \
return 0; \
} \
return count; \
} \
protected: \
nsAutoRefCnt mRefCnt; \
public:
#endif /* GFX_TYPES_H */