2 * Copyright (C) 2008 Nikolas Zimmermann <zimmermann@kde.org>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB. If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
24 #include "platform/fonts/CustomFontData.h"
25 #include "wtf/WeakPtr.h"
26 #include "wtf/text/WTFString.h"
32 class SVGFontFaceElement;
34 class SVGFontData FINAL : public CustomFontData {
36 static PassRefPtr<SVGFontData> create(SVGFontFaceElement* element)
38 return adoptRef(new SVGFontData(element));
41 virtual ~SVGFontData();
43 virtual bool isSVGFont() const OVERRIDE { return true; };
44 virtual bool shouldSkipDrawing() const OVERRIDE;
45 virtual void initializeFontData(SimpleFontData*, float fontSize) OVERRIDE;
46 virtual float widthForSVGGlyph(Glyph, float fontSize) const OVERRIDE;
47 virtual bool fillSVGGlyphPage(GlyphPage*, unsigned offset, unsigned length, UChar* buffer, unsigned bufferLength, const SimpleFontData*) const OVERRIDE;
48 virtual bool applySVGGlyphSelection(WidthIterator&, GlyphData&, bool mirror, int currentCharacter, unsigned& advanceLength) const OVERRIDE;
50 SVGFontFaceElement* svgFontFaceElement() const;
52 float horizontalOriginX() const { return m_horizontalOriginX; }
53 float horizontalOriginY() const { return m_horizontalOriginY; }
54 float horizontalAdvanceX() const { return m_horizontalAdvanceX; }
56 float verticalOriginX() const { return m_verticalOriginX; }
57 float verticalOriginY() const { return m_verticalOriginY; }
58 float verticalAdvanceY() const { return m_verticalAdvanceY; }
61 SVGFontData(SVGFontFaceElement*);
63 bool fillBMPGlyphs(SVGFontElement*, GlyphPage* , unsigned offset, unsigned length, UChar* buffer, const SimpleFontData*) const;
64 bool fillNonBMPGlyphs(SVGFontElement*, GlyphPage* , unsigned offset, unsigned length, UChar* buffer, const SimpleFontData*) const;
66 String createStringWithMirroredCharacters(const String&) const;
68 // Ths SVGFontFaceElement is kept alive --
69 // 1) in the external font case: by the CSSFontFaceSource, which holds a reference to the external SVG document
70 // containing the element;
71 // 2) in the in-document font case: by virtue of being in the document tree and making sure that when it is removed
72 // from the document, it removes the @font-face rule it owns from the document's mapped element sheet and forces
74 WeakPtr<SVGFontFaceElement> m_svgFontFaceElement;
76 float m_horizontalOriginX;
77 float m_horizontalOriginY;
78 float m_horizontalAdvanceX;
80 float m_verticalOriginX;
81 float m_verticalOriginY;
82 float m_verticalAdvanceY;
85 DEFINE_CUSTOM_FONT_DATA_TYPE_CASTS(SVGFontData, isSVGFont());
90 #endif // SVGFontData_h