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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc.
* All rights reserved.
* Copyright (C) 2013 Google Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef FontBuilder_h
#define FontBuilder_h
#include "core/CSSValueKeywords.h"
#include "core/CoreExport.h"
#include "core/css/FontSize.h"
#include "platform/fonts/FontDescription.h"
#include "platform/fonts/FontVariantNumeric.h"
#include "platform/heap/Handle.h"
#include "wtf/PassRefPtr.h"
namespace blink {
class FontSelector;
class ComputedStyle;
class CORE_EXPORT FontBuilder {
STACK_ALLOCATED();
WTF_MAKE_NONCOPYABLE(FontBuilder);
public:
FontBuilder(const Document&);
void setInitial(float effectiveZoom);
void didChangeEffectiveZoom();
void didChangeTextOrientation();
void didChangeWritingMode();
FontFamily standardFontFamily() const;
AtomicString standardFontFamilyName() const;
AtomicString genericFontFamilyName(FontDescription::GenericFamilyType) const;
float fontSizeForKeyword(unsigned keyword, bool isMonospace) const;
void setWeight(FontWeight);
void setSize(const FontDescription::Size&);
void setSizeAdjust(const float aspectValue);
void setStretch(FontStretch);
void setFamilyDescription(const FontDescription::FamilyDescription&);
void setFeatureSettings(PassRefPtr<FontFeatureSettings>);
void setLocale(PassRefPtr<const LayoutLocale>);
void setStyle(FontStyle);
void setVariantCaps(FontDescription::FontVariantCaps);
void setVariantLigatures(const FontDescription::VariantLigatures&);
void setVariantNumeric(const FontVariantNumeric&);
void setTextRendering(TextRenderingMode);
void setKerning(FontDescription::Kerning);
void setFontSmoothing(FontSmoothingMode);
void setVariationSettings(PassRefPtr<FontVariationSettings>);
// FIXME: These need to just vend a Font object eventually.
void createFont(FontSelector*, ComputedStyle&);
void createFontForDocument(FontSelector*, ComputedStyle&);
bool fontDirty() const { return m_flags; }
static FontDescription::FamilyDescription initialFamilyDescription() {
return FontDescription::FamilyDescription(initialGenericFamily());
}
static FontFeatureSettings* initialFeatureSettings() { return nullptr; }
static FontVariationSettings* initialVariationSettings() { return nullptr; }
static FontDescription::GenericFamilyType initialGenericFamily() {
return FontDescription::StandardFamily;
}
static FontDescription::Size initialSize() {
return FontDescription::Size(FontSize::initialKeywordSize(), 0.0f, false);
}
static float initialSizeAdjust() { return FontSizeAdjustNone; }
static TextRenderingMode initialTextRendering() { return AutoTextRendering; }
static FontDescription::FontVariantCaps initialVariantCaps() {
return FontDescription::CapsNormal;
}
static FontDescription::VariantLigatures initialVariantLigatures() {
return FontDescription::VariantLigatures();
}
static FontVariantNumeric initialVariantNumeric() {
return FontVariantNumeric();
};
static LayoutLocale* initialLocale() { return nullptr; }
static FontStyle initialStyle() { return FontStyleNormal; }
static FontDescription::Kerning initialKerning() {
return FontDescription::AutoKerning;
}
static FontSmoothingMode initialFontSmoothing() { return AutoSmoothing; }
static FontStretch initialStretch() { return FontStretchNormal; }
static FontWeight initialWeight() { return FontWeightNormal; }
private:
void setFamilyDescription(FontDescription&,
const FontDescription::FamilyDescription&);
void setSize(FontDescription&, const FontDescription::Size&);
void updateOrientation(FontDescription&, const ComputedStyle&);
// This function fixes up the default font size if it detects that the current
// generic font family has changed. -dwh
void checkForGenericFamilyChange(const FontDescription&, FontDescription&);
void updateSpecifiedSize(FontDescription&, const ComputedStyle&);
void updateComputedSize(FontDescription&, const ComputedStyle&);
void updateAdjustedSize(FontDescription&,
const ComputedStyle&,
FontSelector*);
float getComputedSizeFromSpecifiedSize(FontDescription&,
float effectiveZoom,
float specifiedSize);
Member<const Document> m_document;
FontDescription m_fontDescription;
enum class PropertySetFlag {
Weight,
Size,
Stretch,
Family,
FeatureSettings,
Locale,
Style,
SizeAdjust,
VariantCaps,
VariantLigatures,
VariantNumeric,
VariationSettings,
TextRendering,
Kerning,
FontSmoothing,
EffectiveZoom,
TextOrientation,
WritingMode
};
void set(PropertySetFlag flag) { m_flags |= (1 << unsigned(flag)); }
bool isSet(PropertySetFlag flag) const {
return m_flags & (1 << unsigned(flag));
}
unsigned m_flags;
};
} // namespace blink
#endif
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