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author | Steve Block <steveblock@google.com> | 2011-05-06 11:45:16 +0100 |
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committer | Steve Block <steveblock@google.com> | 2011-05-12 13:44:10 +0100 |
commit | cad810f21b803229eb11403f9209855525a25d57 (patch) | |
tree | 29a6fd0279be608e0fe9ffe9841f722f0f4e4269 /Source/WebCore/platform/graphics/chromium/FontUtilsChromiumWin.h | |
parent | 121b0cf4517156d0ac5111caf9830c51b69bae8f (diff) | |
download | external_webkit-cad810f21b803229eb11403f9209855525a25d57.zip external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.gz external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.bz2 |
Merge WebKit at r75315: Initial merge by git.
Change-Id: I570314b346ce101c935ed22a626b48c2af266b84
Diffstat (limited to 'Source/WebCore/platform/graphics/chromium/FontUtilsChromiumWin.h')
-rw-r--r-- | Source/WebCore/platform/graphics/chromium/FontUtilsChromiumWin.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/Source/WebCore/platform/graphics/chromium/FontUtilsChromiumWin.h b/Source/WebCore/platform/graphics/chromium/FontUtilsChromiumWin.h new file mode 100644 index 0000000..b637ede --- /dev/null +++ b/Source/WebCore/platform/graphics/chromium/FontUtilsChromiumWin.h @@ -0,0 +1,96 @@ +/* + * Copyright (c) 2006, 2007, 2008, 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. + */ + +// A collection of utilities for font handling. + +// FIXME: Move all methods to the files that have their callsites and remove this file. +// *Utils files are not very WebKit-ty. + +#ifndef FontUtilsChromiumWin_h +#define FontUtilsChromiumWin_h + +#include <usp10.h> +#include <wchar.h> +#include <windows.h> + +#include "FontDescription.h" +#include <unicode/uscript.h> + +namespace WebCore { + +// 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 UChar* getFontFamilyForScript(UScriptCode, FontDescription::GenericFamilyType); + +// 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. +// FIXME: This function needs a total overhaul. +const UChar* getFallbackFamily(const UChar* characters, int length, + FontDescription::GenericFamilyType, + UChar32* charChecked, + UScriptCode* scriptChecked); + +// 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. +// FIXME: 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 UChar* family, int style, LOGFONT*, int* ascent, HFONT*, SCRIPT_CACHE**); + +enum { + FontStyleNormal = 0, + FontStyleBold = 1, + FontStyleItalic = 2, + FontStyleUnderlined = 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*); + +} // namespace WebCore + +#endif // FontUtilsChromiumWin_h |