TextFlags.h   [plain text]

/*
 * Copyright (C) 2003, 2006 Apple Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */

#ifndef TextFlags_h
#define TextFlags_h

// <rdar://problem/16980736>: Web fonts crash on certain OSes when using CTFontManagerCreateFontDescriptorFromData()
// FIXME: When we have moved entirely to CORETEXT_WEB_FONTS, remove the isCustomFont member variable from Font, since it will no longer be used.
// See https://bug-145873-attachments.webkit.org/attachment.cgi?id=254710
#if (PLATFORM(IOS) && __IPHONE_OS_VERSION_MIN_REQUIRED < 80000) || (PLATFORM(MAC) && __MAC_OS_X_VERSION_MIN_REQUIRED < 101000)
#define CORETEXT_WEB_FONTS 0
#else
#define CORETEXT_WEB_FONTS 1
#endif

namespace WebCore {

enum TextRenderingMode { AutoTextRendering, OptimizeSpeed, OptimizeLegibility, GeometricPrecision };

enum FontSmoothingMode { AutoSmoothing, NoSmoothing, Antialiased, SubpixelAntialiased };

// This setting is used to provide ways of switching between multiple rendering modes that may have different
// metrics. It is used to switch between CG and GDI text on Windows.
enum FontRenderingMode { NormalRenderingMode, AlternateRenderingMode };

enum FontOrientation { Horizontal, Vertical };

enum NonCJKGlyphOrientation { NonCJKGlyphOrientationVerticalRight, NonCJKGlyphOrientationUpright };

// Here, "Leading" and "Trailing" are relevant after the line has been rearranged for bidi.
// ("Leading" means "left" and "Trailing" means "right.")
enum ExpansionBehaviorFlags {
    ForbidTrailingExpansion = 0 << 0,
    AllowTrailingExpansion = 1 << 0,
    ForceTrailingExpansion = 2 << 0,
    TrailingExpansionMask = 3 << 0,

    ForbidLeadingExpansion = 0 << 2,
    AllowLeadingExpansion = 1 << 2,
    ForceLeadingExpansion = 2 << 2,
    LeadingExpansionMask = 3 << 2,
};
typedef unsigned ExpansionBehavior;

enum FontSynthesisValues {
    FontSynthesisNone = 0x0,
    FontSynthesisWeight = 0x1,
    FontSynthesisStyle = 0x2
};
typedef unsigned FontSynthesis;
const unsigned FontSynthesisWidth = 2;

enum FontWidthVariant {
    RegularWidth,
    HalfWidth,
    ThirdWidth,
    QuarterWidth,
    LastFontWidthVariant = QuarterWidth
};

const unsigned FontWidthVariantWidth = 2;

COMPILE_ASSERT(!(LastFontWidthVariant >> FontWidthVariantWidth), FontWidthVariantWidth_is_correct);

enum FontWeight {
    FontWeight100,
    FontWeight200,
    FontWeight300,
    FontWeight400,
    FontWeight500,
    FontWeight600,
    FontWeight700,
    FontWeight800,
    FontWeight900,
    FontWeightNormal = FontWeight400,
    FontWeightBold = FontWeight700
};

enum FontItalic {
    FontItalicOff = 0,
    FontItalicOn = 1
};

enum FontSmallCaps {
    FontSmallCapsOff = 0,
    FontSmallCapsOn = 1
};

enum {
    FontStyleNormalBit = 0,
    FontStyleItalicBit,
    FontVariantNormalBit,
    FontVariantSmallCapsBit,
    FontWeight100Bit,
    FontWeight200Bit,
    FontWeight300Bit,
    FontWeight400Bit,
    FontWeight500Bit,
    FontWeight600Bit,
    FontWeight700Bit,
    FontWeight800Bit,
    FontWeight900Bit,
    FontTraitsMaskWidth
};

enum FontTraitsMask {
    FontStyleNormalMask = 1 << FontStyleNormalBit,
    FontStyleItalicMask = 1 << FontStyleItalicBit,
    FontStyleMask = FontStyleNormalMask | FontStyleItalicMask,

    FontVariantNormalMask = 1 << FontVariantNormalBit,
    FontVariantSmallCapsMask = 1 << FontVariantSmallCapsBit,
    FontVariantMask = FontVariantNormalMask | FontVariantSmallCapsMask,

    FontWeight100Mask = 1 << FontWeight100Bit,
    FontWeight200Mask = 1 << FontWeight200Bit,
    FontWeight300Mask = 1 << FontWeight300Bit,
    FontWeight400Mask = 1 << FontWeight400Bit,
    FontWeight500Mask = 1 << FontWeight500Bit,
    FontWeight600Mask = 1 << FontWeight600Bit,
    FontWeight700Mask = 1 << FontWeight700Bit,
    FontWeight800Mask = 1 << FontWeight800Bit,
    FontWeight900Mask = 1 << FontWeight900Bit,
    FontWeightMask = FontWeight100Mask | FontWeight200Mask | FontWeight300Mask | FontWeight400Mask | FontWeight500Mask | FontWeight600Mask | FontWeight700Mask | FontWeight800Mask | FontWeight900Mask
};

}

#endif