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/*
* Copyright (C) 2006, 2007 Apple Computer, Inc.
* Copyright (c) 2006, 2007, 2008, 2009, Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER 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 FontPlatformDataChromiumWin_h
#define FontPlatformDataChromiumWin_h
#include "config.h"
#include <wtf/Forward.h>
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/text/StringImpl.h>
#include <usp10.h>
typedef struct HFONT__ *HFONT;
namespace WebCore {
class FontDescription;
class FontPlatformData {
public:
// Used for deleted values in the font cache's hash tables. The hash table
// will create us with this structure, and it will compare other values
// to this "Deleted" one. It expects the Deleted one to be differentiable
// from the NULL one (created with the empty constructor), so we can't just
// set everything to NULL.
FontPlatformData(WTF::HashTableDeletedValueType);
FontPlatformData();
FontPlatformData(HFONT, float size);
FontPlatformData(float size, bool bold, bool oblique);
FontPlatformData(const FontPlatformData&);
FontPlatformData& operator=(const FontPlatformData&);
bool isHashTableDeletedValue() const { return m_font == hashTableDeletedFontValue(); }
~FontPlatformData();
HFONT hfont() const { return m_font ? m_font->hfont() : 0; }
float size() const { return m_size; }
unsigned hash() const
{
return m_font ? m_font->hash() : NULL;
}
bool operator==(const FontPlatformData& other) const
{
return m_font == other.m_font && m_size == other.m_size;
}
#ifndef NDEBUG
String description() const;
#endif
SCRIPT_FONTPROPERTIES* scriptFontProperties() const;
SCRIPT_CACHE* scriptCache() const { return &m_scriptCache; }
private:
// We refcount the internal HFONT so that FontPlatformData can be
// efficiently copied. WebKit depends on being able to copy it, and we
// don't really want to re-create the HFONT.
class RefCountedHFONT : public RefCounted<RefCountedHFONT> {
public:
static PassRefPtr<RefCountedHFONT> create(HFONT hfont)
{
return adoptRef(new RefCountedHFONT(hfont));
}
~RefCountedHFONT();
HFONT hfont() const { return m_hfont; }
unsigned hash() const
{
return WTF::StringHasher::createBlobHash<sizeof(HFONT)>(&m_hfont);
}
bool operator==(const RefCountedHFONT& other) const
{
return m_hfont == other.m_hfont;
}
private:
// The create() function assumes there is already a refcount of one
// so it can do adoptRef.
RefCountedHFONT(HFONT hfont) : m_hfont(hfont)
{
}
HFONT m_hfont;
};
static RefCountedHFONT* hashTableDeletedFontValue();
RefPtr<RefCountedHFONT> m_font;
float m_size; // Point size of the font in pixels.
mutable SCRIPT_CACHE m_scriptCache;
mutable SCRIPT_FONTPROPERTIES* m_scriptFontProperties;
};
} // WebCore
#endif // FontPlatformDataChromiumWin_h
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