gecko/gfx/thebes/gfxTypes.h
2012-05-21 12:12:37 +01:00

57 lines
1.8 KiB
C

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#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;
# define THEBES_API
/**
* 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
};
#endif /* GFX_TYPES_H */