414 lines
12 KiB
C++
414 lines
12 KiB
C++
/*
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* Copyright (C) 2006-2020 Apple Inc. All rights reserved.
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* Copyright (C) 2006 Michael Emmel mike.emmel@gmail.com
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* Copyright (C) 2007 Holger Hans Peter Freyther
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* Copyright (C) 2007 Pioneer Research Center USA, Inc.
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* Copyright (C) 2010, 2011 Brent Fulgham <bfulgham@webkit.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#pragma once
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#include "SharedBuffer.h"
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#include "TextFlags.h"
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#include <wtf/Forward.h>
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#include <wtf/RetainPtr.h>
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#include <wtf/Vector.h>
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#if PLATFORM(WIN)
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#include "COMPtr.h"
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#include "FontMemoryResource.h"
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#include "SharedGDIObject.h"
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#endif
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#if USE(CAIRO)
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#include "RefPtrCairo.h"
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#endif
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#if USE(FREETYPE)
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#include "FcUniquePtr.h"
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#include "HbUniquePtr.h"
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#include "RefPtrFontconfig.h"
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#include <memory>
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#endif
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#if PLATFORM(HAIKU)
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#include <memory>
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#include <interface/Font.h>
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#include <wtf/text/AtomString.h>
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#include <wtf/text/CString.h>
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#endif
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#if USE(APPKIT)
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OBJC_CLASS NSFont;
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#endif
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#if USE(CORE_TEXT)
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typedef const struct __CTFont* CTFontRef;
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#endif
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#if USE(CG)
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#include <CoreGraphics/CoreGraphics.h>
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#endif
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#if PLATFORM(WIN)
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#include <wtf/win/GDIObject.h>
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typedef struct HFONT__* HFONT;
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interface IDWriteFont;
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interface IDWriteFontFace;
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#endif
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#if USE(DIRECT2D)
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#include <dwrite_3.h>
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#endif
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namespace WebCore {
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class FontDescription;
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class SharedBuffer;
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// This class is conceptually immutable. Once created, no instances should ever change (in an observable way).
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class FontPlatformData {
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WTF_MAKE_FAST_ALLOCATED;
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public:
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struct CreationData;
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struct FontVariationAxis {
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FontVariationAxis(const String& name, const String& tag, float defaultValue, float minimumValue, float maximumValue)
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: m_name(name)
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, m_tag(tag)
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, m_defaultValue(defaultValue)
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, m_minimumValue(minimumValue)
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, m_maximumValue(maximumValue)
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{
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}
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const String& name() const { return m_name; }
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const String& tag() const { return m_tag; }
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float defaultValue() const { return m_defaultValue; }
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float minimumValue() const { return m_minimumValue; }
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float maximumValue() const { return m_maximumValue; }
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private:
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const String m_name;
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const String m_tag;
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float m_defaultValue;
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float m_minimumValue;
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float m_maximumValue;
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};
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FontPlatformData(WTF::HashTableDeletedValueType);
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FontPlatformData();
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#if PLATFORM(HAIKU)
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FontPlatformData(const FontPlatformData&);
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#else
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FontPlatformData(FontPlatformData&&) = default;
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#endif
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FontPlatformData(float size, bool syntheticBold, bool syntheticOblique, FontOrientation = FontOrientation::Horizontal, FontWidthVariant = FontWidthVariant::RegularWidth, TextRenderingMode = TextRenderingMode::AutoTextRendering, CreationData* = nullptr);
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#if USE(CORE_TEXT)
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WEBCORE_EXPORT FontPlatformData(RetainPtr<CTFontRef>&&, float size, bool syntheticBold = false, bool syntheticOblique = false, FontOrientation = FontOrientation::Horizontal, FontWidthVariant = FontWidthVariant::RegularWidth, TextRenderingMode = TextRenderingMode::AutoTextRendering, CreationData* = nullptr);
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#endif
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#if PLATFORM(HAIKU)
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FontPlatformData(const FontDescription& fontDescription, const AtomString& familyName);
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static void SetFallBackSerifFont(const BString& font);
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static void SetFallBackSansSerifFont(const BString& font);
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static void SetFallBackFixedFont(const BString& font);
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static void SetFallBackStandardFont(const BString& font);
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#endif
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#if PLATFORM(WIN)
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FontPlatformData(GDIObject<HFONT>, float size, bool syntheticBold, bool syntheticOblique, bool useGDI, CreationData* = nullptr);
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#if USE(CORE_TEXT)
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FontPlatformData(GDIObject<HFONT>, CTFontRef, CGFontRef, float size, bool syntheticBold, bool syntheticOblique, bool useGDI);
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#endif
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#if USE(DIRECT2D)
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FontPlatformData(GDIObject<HFONT>&&, COMPtr<IDWriteFont>&&, float size, bool syntheticBold, bool syntheticOblique, bool useGDI);
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#endif
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#if USE(CAIRO)
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FontPlatformData(GDIObject<HFONT>, cairo_font_face_t*, float size, bool bold, bool italic, CreationData* = nullptr);
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#endif
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#endif
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#if USE(FREETYPE)
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FontPlatformData(cairo_font_face_t*, RefPtr<FcPattern>&&, float size, bool fixedWidth, bool syntheticBold, bool syntheticOblique, FontOrientation);
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#endif
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#if PLATFORM(HAIKU)
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const BFont* font() const { return m_font.get(); }
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#endif
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static FontPlatformData cloneWithOrientation(const FontPlatformData&, FontOrientation);
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static FontPlatformData cloneWithSyntheticOblique(const FontPlatformData&, bool);
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static FontPlatformData cloneWithSize(const FontPlatformData&, float);
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#if PLATFORM(WIN)
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HFONT hfont() const { return m_font ? m_font->get() : 0; }
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bool useGDI() const { return m_useGDI; }
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#if USE(CG)
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CGFontRef cgFont() const { return m_cgFont.get(); }
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#endif
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#endif
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#if USE(CORE_TEXT)
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WEBCORE_EXPORT CTFontRef registeredFont() const; // Returns nullptr iff the font is not registered, such as web fonts (otherwise returns font()).
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static RetainPtr<CFTypeRef> objectForEqualityCheck(CTFontRef);
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RetainPtr<CFTypeRef> objectForEqualityCheck() const;
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bool hasCustomTracking() const { return isSystemFont(); }
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#if PLATFORM(WIN)
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CTFontRef ctFont() const { return m_ctFont.get(); }
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#else
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CTFontRef font() const { return m_font.get(); }
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CTFontRef ctFont() const;
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#endif
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#endif
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#if PLATFORM(WIN) || PLATFORM(COCOA)
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bool isSystemFont() const { return m_isSystemFont; }
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#endif
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bool hasVariations() const { return m_hasVariations; }
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#if USE(DIRECT2D)
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IDWriteFont* dwFont() const { return m_dwFont.get(); }
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IDWriteFontFace* dwFontFace() const { return m_dwFontFace.get(); }
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#endif
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bool isFixedPitch() const;
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float size() const { return m_size; }
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bool syntheticBold() const { return m_syntheticBold; }
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bool syntheticOblique() const { return m_syntheticOblique; }
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bool isColorBitmapFont() const { return m_isColorBitmapFont; }
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FontOrientation orientation() const { return m_orientation; }
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FontWidthVariant widthVariant() const { return m_widthVariant; }
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TextRenderingMode textRenderingMode() const { return m_textRenderingMode; }
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bool isForTextCombine() const { return widthVariant() != FontWidthVariant::RegularWidth; } // Keep in sync with callers of FontDescription::setWidthVariant().
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String familyName() const;
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Vector<FontVariationAxis> variationAxes() const;
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#if USE(CAIRO)
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cairo_scaled_font_t* scaledFont() const { return m_scaledFont.get(); }
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#endif
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#if USE(FREETYPE)
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#if USE(HARFBUZZ) && !ENABLE(OPENTYPE_MATH)
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HbUniquePtr<hb_font_t> createOpenTypeMathHarfBuzzFont() const;
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#endif
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bool hasCompatibleCharmap() const;
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FcPattern* fcPattern() const;
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bool isFixedWidth() const { return m_fixedWidth; }
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#endif
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unsigned hash() const;
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#if USE(HAIKU)
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FontPlatformData& operator=(const FontPlatformData&);
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#else
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FontPlatformData& operator=(const FontPlatformData&) = default;
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#endif
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bool operator==(const FontPlatformData& other) const
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{
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return platformIsEqual(other)
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&& m_isHashTableDeletedValue == other.m_isHashTableDeletedValue
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&& m_size == other.m_size
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&& m_syntheticBold == other.m_syntheticBold
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&& m_syntheticOblique == other.m_syntheticOblique
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&& m_isColorBitmapFont == other.m_isColorBitmapFont
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&& m_orientation == other.m_orientation
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&& m_widthVariant == other.m_widthVariant
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&& m_textRenderingMode == other.m_textRenderingMode;
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}
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bool isHashTableDeletedValue() const
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{
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return m_isHashTableDeletedValue;
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}
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bool isEmoji() const
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{
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#if PLATFORM(IOS_FAMILY)
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return m_isEmoji;
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#else
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return false;
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#endif
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}
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RefPtr<SharedBuffer> openTypeTable(uint32_t table) const;
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RefPtr<SharedBuffer> platformOpenTypeTable(uint32_t table) const;
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String description() const;
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struct CreationData {
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Ref<SharedBuffer> fontFaceData;
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String itemInCollection;
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#if PLATFORM(WIN)
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Ref<FontMemoryResource> m_fontResource;
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#endif
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};
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const std::optional<CreationData>& creationData() const
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{
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return m_creationData;
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}
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private:
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bool platformIsEqual(const FontPlatformData&) const;
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#if PLATFORM(COCOA)
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CGFloat ctFontSize() const;
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#endif
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#if PLATFORM(WIN)
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void platformDataInit(HFONT, float size, HDC, WCHAR* faceName);
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#endif
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#if USE(FREETYPE)
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void buildScaledFont(cairo_font_face_t*);
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#endif
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#if PLATFORM(HAIKU)
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static void findMatchingFontFamily(const AtomString& familyName,
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font_family& fontFamily);
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#endif
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#if PLATFORM(WIN)
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RefPtr<SharedGDIObject<HFONT>> m_font; // FIXME: Delete this in favor of m_ctFont or m_dwFont or m_scaledFont.
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#if USE(CORE_TEXT)
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RetainPtr<CGFontRef> m_cgFont; // FIXME: Delete this in favor of m_ctFont.
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RetainPtr<CTFontRef> m_ctFont;
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#endif
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#elif USE(CORE_TEXT)
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// FIXME: Get rid of one of these. These two fonts are subtly different, and it is not obvious which one to use where.
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RetainPtr<CTFontRef> m_font;
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mutable RetainPtr<CTFontRef> m_ctFont;
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#elif PLATFORM(HAIKU)
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std::unique_ptr<BFont> m_font;
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#endif
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#if USE(CG) && PLATFORM(WIN)
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RetainPtr<CGFontRef> m_cgFont;
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#endif
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#if USE(DIRECT2D)
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COMPtr<IDWriteFont> m_dwFont;
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COMPtr<IDWriteFontFace> m_dwFontFace;
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#endif
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#if USE(CAIRO)
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RefPtr<cairo_scaled_font_t> m_scaledFont;
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#endif
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#if USE(FREETYPE)
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#if USE(CAIRO)
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RefPtr<FcPattern> m_pattern;
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#endif
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#endif
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float m_size { 0 };
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FontOrientation m_orientation { FontOrientation::Horizontal };
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FontWidthVariant m_widthVariant { FontWidthVariant::RegularWidth };
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TextRenderingMode m_textRenderingMode { TextRenderingMode::AutoTextRendering };
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std::optional<CreationData> m_creationData;
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bool m_syntheticBold { false };
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bool m_syntheticOblique { false };
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bool m_isColorBitmapFont { false };
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bool m_isHashTableDeletedValue { false };
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bool m_isSystemFont { false };
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bool m_hasVariations { false };
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// The values above are common to all ports
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#if PLATFORM(HAIKU)
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static font_family m_FallbackSerifFontFamily;
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static font_family m_FallbackSansSerifFontFamily;
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static font_family m_FallbackFixedFontFamily;
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static font_family m_FallbackStandardFontFamily;
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#endif
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#if PLATFORM(IOS_FAMILY)
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bool m_isEmoji { false };
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#endif
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#if PLATFORM(WIN)
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bool m_useGDI { false };
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#endif
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#if USE(FREETYPE)
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bool m_fixedWidth { false };
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#endif
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// Adding any non-derived information to FontPlatformData needs a parallel change in WebCoreArgumentCodersCocoa.cpp.
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};
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#if USE(CORE_TEXT)
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bool isSystemFont(CTFontRef);
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#endif
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#if USE(APPKIT) && defined(__OBJC__)
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// NSFonts and CTFontRefs are toll-free-bridged.
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inline CTFontRef toCTFont(NSFont *font)
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{
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return (__bridge CTFontRef)font;
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}
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inline NSFont *toNSFont(CTFontRef font)
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{
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return (__bridge NSFont *)font;
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}
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#endif
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#if USE(CG)
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class ScopedTextMatrix {
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public:
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ScopedTextMatrix(CGAffineTransform newMatrix, CGContextRef context)
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: m_context(context)
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, m_textMatrix(CGContextGetTextMatrix(context))
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{
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CGContextSetTextMatrix(m_context, newMatrix);
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}
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~ScopedTextMatrix()
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{
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CGContextSetTextMatrix(m_context, m_textMatrix);
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}
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CGAffineTransform savedMatrix() const
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{
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return m_textMatrix;
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}
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private:
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CGContextRef m_context;
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CGAffineTransform m_textMatrix;
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};
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#endif
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} // namespace WebCore
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