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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_COMMON_MAC_FONT_LOADER_H_
#define CONTENT_COMMON_MAC_FONT_LOADER_H_
#pragma once
#include <ApplicationServices/ApplicationServices.h>
#include "base/shared_memory.h"
#ifdef __OBJC__
@class NSFont;
#else
class NSFont;
#endif
// Provides functionality to transmit fonts over IPC.
//
// Note about font formats: .dfont (datafork suitcase) fonts are currently not
// supported by this code since CGFontCreateWithDataProvider() can't handle them
// directly.
class FontLoader {
public:
// Load a font specified by |font_to_encode| into a shared memory buffer
// suitable for sending over IPC.
//
// On return:
// returns true on success, false on failure.
// |font_data| - shared memory buffer containing the raw data for the font
// file.
// |font_data_size| - size of data contained in |font_data|.
// |font_id| - unique identifier for the on-disk file we load for the font.
static bool LoadFontIntoBuffer(NSFont* font_to_encode,
base::SharedMemory* font_data,
uint32* font_data_size,
uint32* font_id);
// Given a shared memory buffer containing the raw data for a font file, load
// the font and return a CGFontRef.
//
// |data| - A shared memory handle pointing to the raw data from a font file.
// |data_size| - Size of |data|.
//
// On return:
// returns true on success, false on failure.
// |out| - A CGFontRef corresponding to the designated font.
// The caller is responsible for releasing this value via CGFontRelease()
// when done.
static bool CGFontRefFromBuffer(base::SharedMemoryHandle font_data,
uint32 font_data_size,
CGFontRef* out);
};
#endif // CONTENT_COMMON_MAC_FONT_LOADER_H_
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