1/* 2 * Copyright (C) 2007, 2008 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef FontSelector_h 27#define FontSelector_h 28 29#include <wtf/Forward.h> 30#include <wtf/PassRefPtr.h> 31#include <wtf/RefCounted.h> 32 33namespace WebCore { 34 35class FontData; 36class FontDescription; 37class FontSelectorClient; 38 39class FontSelector : public RefCounted<FontSelector> { 40public: 41 virtual ~FontSelector() { } 42 43 // FIXME: Remove the "get" prefix from these two member functions 44 virtual PassRefPtr<FontData> getFontData(const FontDescription&, const AtomicString& familyName) = 0; 45 virtual PassRefPtr<FontData> getFallbackFontData(const FontDescription&, size_t) = 0; 46 47 virtual size_t fallbackFontDataCount() = 0; 48 virtual bool resolvesFamilyFor(const FontDescription&) const = 0; 49 50 virtual void fontCacheInvalidated() { } 51 52 virtual void registerForInvalidationCallbacks(FontSelectorClient*) = 0; 53 virtual void unregisterForInvalidationCallbacks(FontSelectorClient*) = 0; 54 55 virtual unsigned uniqueId() const = 0; 56 virtual unsigned version() const = 0; 57}; 58 59class FontSelectorClient { 60public: 61 virtual ~FontSelectorClient() { } 62 63 virtual void fontsNeedUpdate(FontSelector*) = 0; 64}; 65 66} // namespace WebCore 67 68#endif // FontSelector_h 69