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/*
* Copyright (c) 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.
*/
#ifndef SkiaFontWin_h
#define SkiaFontWin_h
#include <windows.h>
#include <usp10.h>
struct SkPoint;
namespace WebCore {
class FontPlatformData;
class GraphicsContext;
class PlatformContextSkia;
#if !USE(SKIA_TEXT)
// The functions below are used for more complex font drawing (effects such as
// stroking and more complex transforms) than Windows supports directly. Since
// Windows drawing is faster you should use windowsCanHandleTextDrawing first to
// check if using Skia is required at all.
// Note that the text will look different (no ClearType) so this should only be
// used when necessary.
//
// When you call a Skia* text drawing function, various glyph outlines will be
// cached. As a result, you should call SkiaWinOutlineCache::removePathsForFont
// when the font is destroyed so that the cache does not outlive the font (since
// the HFONTs are recycled).
//
// Remember that Skia's text drawing origin is the baseline, like WebKit, not
// the top, like Windows.
// Returns true if the fillColor and shadowColor are opaque and the text-shadow
// is not blurred.
bool windowsCanHandleDrawTextShadow(GraphicsContext*);
// Returns true if advanced font rendering is recommended.
bool windowsCanHandleTextDrawing(GraphicsContext*);
// Returns true if advanced font rendering is recommended if shadows are
// disregarded.
bool windowsCanHandleTextDrawingWithoutShadow(GraphicsContext*);
#endif
// Note that the offsets parameter is optional. If not null it represents a
// per glyph offset (such as returned by ScriptPlace Windows API function).
void paintSkiaText(GraphicsContext*,
const FontPlatformData&,
int numGlyphs,
const WORD* glyphs,
const int* advances,
const GOFFSET* offsets,
const SkPoint* origin);
// Note that the offsets parameter is optional. If not null it represents a
// per glyph offset (such as returned by ScriptPlace Windows API function).
// Note: this is less efficient than calling the version with FontPlatformData,
// as that caches the SkTypeface object.
void paintSkiaText(GraphicsContext*,
HFONT,
int numGlyphs,
const WORD* glyphs,
const int* advances,
const GOFFSET* offsets,
const SkPoint* origin);
} // namespace WebCore
#endif // SkiaFontWin_h
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