| /* |
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| * met: |
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| * notice, this list of conditions and the following disclaimer. |
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| * in the documentation and/or other materials provided with the |
| * distribution. |
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| * this software without specific prior written permission. |
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| */ |
| |
| // 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 <windows.h> |
| #include <usp10.h> |
| #include <wchar.h> |
| |
| #include <unicode/uscript.h> |
| #include "core/platform/graphics/FontDescription.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**, WORD* spaceGlyph); |
| |
| 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 |