зеркало из https://github.com/mozilla/gecko-dev.git
134 строки
3.5 KiB
C++
134 строки
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GFX_TYPES_H
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#define GFX_TYPES_H
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#include <stdint.h>
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#include "mozilla/TypedEnumBits.h"
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namespace mozilla {
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enum class StyleGenericFontFamily : uint8_t;
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}
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typedef struct _cairo_surface cairo_surface_t;
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typedef struct _cairo_user_data_key cairo_user_data_key_t;
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typedef void (*thebes_destroy_func_t)(void* data);
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/**
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* Currently needs to be 'double' for Cairo compatibility. Could
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* become 'float', perhaps, in some configurations.
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*/
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typedef double gfxFloat;
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/**
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* Priority of a line break opportunity.
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*
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* eNoBreak The line has no break opportunities
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* eWordWrapBreak The line has a break opportunity only within a word. With
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* overflow-wrap|word-wrap: break-word we will break at this
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* point only if there are no other break opportunities in the
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* line.
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* eNormalBreak The line has a break opportunity determined by the standard
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* line-breaking algorithm.
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*
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* Future expansion: split eNormalBreak into multiple priorities, e.g.
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* punctuation break and whitespace break (bug 389710).
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* As and when we implement it, text-wrap: unrestricted will
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* mean that priorities are ignored and all line-break
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* opportunities are equal.
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*
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* @see gfxTextRun::BreakAndMeasureText
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* @see nsLineLayout::NotifyOptionalBreakPosition
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*/
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enum class gfxBreakPriority { eNoBreak = 0, eWordWrapBreak, eNormalBreak };
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enum class gfxSurfaceType {
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Image,
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PDF,
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PS,
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Xlib,
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Xcb,
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Glitz, // unused, but needed for cairo parity
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Quartz,
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Win32,
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BeOS,
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DirectFB, // unused, but needed for cairo parity
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SVG,
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OS2,
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Win32Printing,
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QuartzImage,
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Script,
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QPainter,
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Recording,
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VG,
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GL,
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DRM,
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Tee,
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XML,
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Skia,
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Subsurface,
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Max
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};
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enum class gfxContentType {
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COLOR = 0x1000,
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ALPHA = 0x2000,
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COLOR_ALPHA = 0x3000,
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SENTINEL = 0xffff
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};
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enum class gfxAlphaType {
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Opaque,
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Premult,
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NonPremult,
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};
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/**
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* Type used to record how a particular font is selected during the font-
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* matching process, so that this can be exposed to the Inspector.
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*/
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struct FontMatchType {
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enum class Kind : uint8_t {
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kUnspecified = 0,
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kFontGroup = 1,
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kPrefsFallback = 1 << 1,
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kSystemFallback = 1 << 2,
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};
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inline FontMatchType& operator|=(const FontMatchType& aOther);
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bool operator==(const FontMatchType& aOther) const {
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return kind == aOther.kind && generic == aOther.generic;
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}
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bool operator!=(const FontMatchType& aOther) const {
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return !(*this == aOther);
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}
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MOZ_IMPLICIT FontMatchType() = default;
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MOZ_IMPLICIT FontMatchType(Kind aKind) : kind(aKind) {}
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FontMatchType(Kind aKind, mozilla::StyleGenericFontFamily aGeneric)
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: kind(aKind), generic(aGeneric) {}
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Kind kind = static_cast<Kind>(0);
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// Using 0 to avoid pulling ServoStyleConsts.h everywhere.
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mozilla::StyleGenericFontFamily generic = mozilla::StyleGenericFontFamily(0);
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};
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MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(FontMatchType::Kind)
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FontMatchType& FontMatchType::operator|=(const FontMatchType& aOther) {
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kind |= aOther.kind;
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// We only keep track of one generic.
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if (generic != aOther.generic) {
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generic = mozilla::StyleGenericFontFamily(0);
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}
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return *this;
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}
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#endif /* GFX_TYPES_H */
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