Debase our Uniscribe code. This moves FontUtils and all our Uniscribe code fr...

base/gfx/font_utils.h

-// Copyright (c) 2006-2008 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.
-//
-// A collection of utilities for font handling.
-
-#ifndef BASE_GFX_FONT_UTILS_H__
-#define BASE_GFX_FONT_UTILS_H__
-
-#include <usp10.h>
-#include <wchar.h>
-#include <windows.h>
-
-#include <unicode/uscript.h>
-
-namespace gfx {
-
-// The order of family types needs to be exactly the same as
-// WebCore::FontDescription::GenericFamilyType. We may lift that restriction
-// when we make webkit_glue::WebkitGenericToChromeGenericFamily more
-// intelligent.
-enum GenericFamilyType {
-  GENERIC_FAMILY_NONE = 0,
-  GENERIC_FAMILY_STANDARD,
-  GENERIC_FAMILY_SERIF,
-  GENERIC_FAMILY_SANSSERIF,
-  GENERIC_FAMILY_MONOSPACE,
-  GENERIC_FAMILY_CURSIVE,
-  GENERIC_FAMILY_FANTASY
-};
-
-// Return a font family that supports a script and belongs to |generic| font family.
-// It can return NULL and a caller has to implement its own fallback.
-const wchar_t* GetFontFamilyForScript(UScriptCode script,
-                                      GenericFamilyType generic);
-
-// Return a font family that can render |characters| based on
-// what script characters belong to. When char_checked is non-NULL,
-// it's filled with the character used to determine the script.
-// When script_checked is non-NULL, the script used to determine
-// the family is returned.
-// TODO(jungshik) : This function needs a total overhaul.
-const wchar_t* GetFallbackFamily(const wchar_t* characters,
-                                 int length,
-                                 GenericFamilyType generic,
-                                 UChar32 *char_checked,
-                                 UScriptCode *script_checked);
-// Derive a new HFONT by replacing lfFaceName of LOGFONT with |family|,
-// calculate the ascent for the derived HFONT, and initialize SCRIPT_CACHE
-// in FontData.
-// |style| is only used for cache key generation. |style| is
-// bit-wise OR of BOLD(1), UNDERLINED(2) and ITALIC(4) and
-// should match what's contained in LOGFONT. It should be calculated
-// by calling GetStyleFromLogFont.
-// Returns false if the font is not accessible, in which case |ascent| field
-// of |fontdata| is set to kUndefinedAscent.
-// Be aware that this is not thread-safe.
-// TODO(jungshik): Instead of having three out params, we'd better have one
-// (|*FontData|), but somehow it mysteriously messes up the layout for
-// certain complex script pages (e.g. hi.wikipedia.org) and also crashes
-// at the start-up if recently visited page list includes pages with complex
-// scripts in their title. Moreover, somehow the very first-pass of
-// intl2 page-cycler test is noticeably slower with one out param than
-// the current version although the subsequent 9 passes take about the
-// same time.
-bool GetDerivedFontData(const wchar_t *family,
-                        int style,
-                        LOGFONT *logfont,
-                        int *ascent,
-                        HFONT *hfont,
-                        SCRIPT_CACHE **script_cache);
-
-enum {
-  FONT_STYLE_NORMAL = 0,
-  FONT_STYLE_BOLD = 1,
-  FONT_STYLE_ITALIC = 2,
-  FONT_STYLE_UNDERLINED = 4
-};
-
-// Derive style (bit-wise OR of FONT_STYLE_BOLD, FONT_STYLE_UNDERLINED, and
-// FONT_STYLE_ITALIC) from LOGFONT. Returns 0 if |*logfont| is NULL.
-int GetStyleFromLogfont(const LOGFONT *logfont);
-
-}  // namespace gfx
-
-#endif // BASE_GFX_FONT_UTILS_H__
-