зеркало из https://github.com/mozilla/gecko-dev.git
277 строки
9.0 KiB
C++
277 строки
9.0 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Foundation code.
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*
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* The Initial Developer of the Original Code is Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Bas Schouten <bschouten@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef GFX_DWRITEFONTLIST_H
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#define GFX_DWRITEFONTLIST_H
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#include "gfxDWriteCommon.h"
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#include "gfxFont.h"
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#include "gfxUserFontSet.h"
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#include "cairo-win32.h"
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#include "gfxPlatformFontList.h"
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#include "gfxPlatform.h"
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/**
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* gfxDWriteFontFamily is a class that describes one of the fonts on the
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* users system. It holds each gfxDWriteFontEntry (maps more directly to
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* a font face) which holds font type, charset info and character map info.
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*/
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class gfxDWriteFontEntry;
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/**
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* \brief Class representing directwrite font family.
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*/
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class gfxDWriteFontFamily : public gfxFontFamily
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{
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public:
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/**
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* Constructs a new DWriteFont Family.
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*
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* \param aName Name identifying the family
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* \param aFamily IDWriteFontFamily object representing the directwrite
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* family object.
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*/
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gfxDWriteFontFamily(const nsAString& aName,
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IDWriteFontFamily *aFamily)
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: gfxFontFamily(aName), mDWFamily(aFamily), mForceGDIClassic(false) {}
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virtual ~gfxDWriteFontFamily();
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virtual void FindStyleVariations();
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virtual void LocalizedName(nsAString& aLocalizedName);
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void SetForceGDIClassic(bool aForce) { mForceGDIClassic = aForce; }
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protected:
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/** This font family's directwrite fontfamily object */
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nsRefPtr<IDWriteFontFamily> mDWFamily;
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bool mForceGDIClassic;
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};
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/**
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* \brief Class representing DirectWrite FontEntry (a unique font style/family)
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*/
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class gfxDWriteFontEntry : public gfxFontEntry
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{
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public:
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/**
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* Constructs a font entry.
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*
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* \param aFaceName The name of the corresponding font face.
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* \param aFont DirectWrite font object
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*/
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gfxDWriteFontEntry(const nsAString& aFaceName,
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IDWriteFont *aFont)
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: gfxFontEntry(aFaceName), mFont(aFont), mFontFile(nsnull),
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mForceGDIClassic(false)
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{
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mItalic = (aFont->GetStyle() == DWRITE_FONT_STYLE_ITALIC ||
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aFont->GetStyle() == DWRITE_FONT_STYLE_OBLIQUE);
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mStretch = FontStretchFromDWriteStretch(aFont->GetStretch());
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PRUint16 weight = NS_ROUNDUP(aFont->GetWeight() - 50, 100);
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weight = NS_MAX<PRUint16>(100, weight);
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weight = NS_MIN<PRUint16>(900, weight);
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mWeight = weight;
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mIsCJK = UNINITIALIZED_VALUE;
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}
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/**
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* Constructs a font entry using a font. But with custom font values.
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* This is used for creating correct font entries for @font-face with local
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* font source.
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*
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* \param aFaceName The name of the corresponding font face.
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* \param aFont DirectWrite font object
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* \param aWeight Weight of the font
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* \param aStretch Stretch of the font
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* \param aItalic True if italic
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*/
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gfxDWriteFontEntry(const nsAString& aFaceName,
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IDWriteFont *aFont,
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PRUint16 aWeight,
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PRInt16 aStretch,
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PRBool aItalic)
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: gfxFontEntry(aFaceName), mFont(aFont), mFontFile(nsnull),
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mForceGDIClassic(false)
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{
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mWeight = aWeight;
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mStretch = aStretch;
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mItalic = aItalic;
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mIsUserFont = PR_TRUE;
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mIsLocalUserFont = PR_TRUE;
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mIsCJK = UNINITIALIZED_VALUE;
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}
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/**
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* Constructs a font entry using a font file.
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*
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* \param aFaceName The name of the corresponding font face.
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* \param aFontFile DirectWrite fontfile object
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* \param aWeight Weight of the font
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* \param aStretch Stretch of the font
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* \param aItalic True if italic
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*/
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gfxDWriteFontEntry(const nsAString& aFaceName,
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IDWriteFontFile *aFontFile,
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PRUint16 aWeight,
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PRInt16 aStretch,
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PRBool aItalic)
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: gfxFontEntry(aFaceName), mFont(nsnull), mFontFile(aFontFile),
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mForceGDIClassic(false)
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{
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mWeight = aWeight;
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mStretch = aStretch;
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mItalic = aItalic;
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mIsUserFont = PR_TRUE;
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mIsCJK = UNINITIALIZED_VALUE;
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}
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virtual ~gfxDWriteFontEntry();
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virtual PRBool IsSymbolFont();
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virtual nsresult GetFontTable(PRUint32 aTableTag,
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FallibleTArray<PRUint8>& aBuffer);
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nsresult ReadCMAP();
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PRBool IsCJKFont();
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void SetForceGDIClassic(bool aForce) { mForceGDIClassic = aForce; }
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bool GetForceGDIClassic() { return mForceGDIClassic; }
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protected:
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friend class gfxDWriteFont;
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friend class gfxDWriteFontList;
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virtual gfxFont *CreateFontInstance(const gfxFontStyle *aFontStyle,
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PRBool aNeedsBold);
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nsresult CreateFontFace(
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IDWriteFontFace **aFontFace,
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DWRITE_FONT_SIMULATIONS aSimulations = DWRITE_FONT_SIMULATIONS_NONE);
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static PRBool InitLogFont(IDWriteFont *aFont, LOGFONTW *aLogFont);
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/**
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* A fontentry only needs to have either of these. If it has both only
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* the IDWriteFont will be used.
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*/
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nsRefPtr<IDWriteFont> mFont;
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nsRefPtr<IDWriteFontFile> mFontFile;
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DWRITE_FONT_FACE_TYPE mFaceType;
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PRInt8 mIsCJK;
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bool mForceGDIClassic;
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};
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class gfxDWriteFontList : public gfxPlatformFontList {
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public:
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gfxDWriteFontList();
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static gfxDWriteFontList* PlatformFontList() {
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return static_cast<gfxDWriteFontList*>(sPlatformFontList);
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}
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// initialize font lists
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virtual nsresult InitFontList();
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virtual gfxFontEntry* GetDefaultFont(const gfxFontStyle* aStyle,
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PRBool& aNeedsBold);
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virtual gfxFontEntry* LookupLocalFont(const gfxProxyFontEntry *aProxyEntry,
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const nsAString& aFontName);
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virtual gfxFontEntry* MakePlatformFont(const gfxProxyFontEntry *aProxyEntry,
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const PRUint8 *aFontData,
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PRUint32 aLength);
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virtual PRBool ResolveFontName(const nsAString& aFontName,
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nsAString& aResolvedFontName);
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PRBool GetStandardFamilyName(const nsAString& aFontName,
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nsAString& aFamilyName);
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IDWriteGdiInterop *GetGDIInterop() { return mGDIInterop; }
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PRBool UseGDIFontTableAccess() { return mGDIFontTableAccess; }
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virtual gfxFontFamily* FindFamily(const nsAString& aFamily);
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virtual void GetFontFamilyList(nsTArray<nsRefPtr<gfxFontFamily> >& aFamilyArray);
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gfxFloat GetForceGDIClassicMaxFontSize() { return mForceGDIClassicMaxFontSize; }
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private:
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friend class gfxDWriteFontFamily;
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nsresult GetFontSubstitutes();
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void GetDirectWriteSubstitutes();
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/**
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* Fonts listed in the registry as substitutes but for which no actual
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* font family is found.
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*/
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nsTArray<nsString> mNonExistingFonts;
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typedef nsDataHashtable<nsStringHashKey, nsRefPtr<gfxFontFamily> > FontTable;
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/**
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* Table of font substitutes, we grab this from the registry to get
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* alternative font names.
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*/
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FontTable mFontSubstitutes;
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PRBool mInitialized;
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virtual nsresult DelayedInitFontList();
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gfxFloat mForceGDIClassicMaxFontSize;
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// whether to use GDI font table access routines
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PRBool mGDIFontTableAccess;
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nsRefPtr<IDWriteGdiInterop> mGDIInterop;
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};
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#endif /* GFX_DWRITEFONTLIST_H */
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