c88cc779ef
Bug: skia:8487 Change-Id: Ia6715346a0214b0db2fc67294e45b5e04c1c24d8 Reviewed-on: https://skia-review.googlesource.com/c/163889 Commit-Queue: Mike Reed <reed@google.com> Reviewed-by: Herb Derby <herb@google.com>
100 lines
2.9 KiB
C++
100 lines
2.9 KiB
C++
/*
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* Copyright 2014 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkFont_DEFINED
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#define SkFont_DEFINED
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#include "SkScalar.h"
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#include "SkRefCnt.h"
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class SkPaint;
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class SkTypeface;
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enum SkTextEncoding {
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kUTF8_SkTextEncoding,
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kUTF16_SkTextEncoding,
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kUTF32_SkTextEncoding,
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kGlyphID_SkTextEncoding,
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};
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class SkFont {
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public:
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enum Flags {
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/**
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* Use the system's automatic hinting mechanism to hint the typeface.
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*/
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kForceAutoHinting_Flag = 1 << 0,
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/**
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* If the typeface contains explicit bitmaps for hinting, use them.
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* If both bytecode and auto hints are also specified, attempt to use the bitmaps first;
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* if that fails (e.g. there are no bitmaps), then attempt to bytecode or autohint.
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*/
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kEmbeddedBitmaps_Flag = 1 << 1,
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kSubpixel_Flag = 1 << 2,
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kLinearMetrics_Flag = 1 << 3,
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kEmbolden_Flag = 1 << 4,
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kHinting_FlagShift = 5,
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kHinting_FlagMask = 3, // 2 bits
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kDEPRECATED_Antialias_Flag = 1 << 7, // want to rely on paint for this
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};
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SkFont(sk_sp<SkTypeface>, SkScalar size, uint32_t flags);
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SkFont(sk_sp<SkTypeface>, SkScalar size, SkScalar scaleX, SkScalar skewX, uint32_t flags);
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/**
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* Return a font with the same attributes of this font, but with the specified size.
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* If size is not supported (e.g. <= 0 or non-finite) NULL will be returned.
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*/
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SkFont makeWithSize(SkScalar size) const;
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/**
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* Return a font with the same attributes of this font, but with the flags.
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*/
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SkFont makeWithFlags(uint32_t newFlags) const;
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SkTypeface* getTypeface() const { return fTypeface.get(); }
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SkScalar getSize() const { return fSize; }
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SkScalar getScaleX() const { return fScaleX; }
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SkScalar getSkewX() const { return fSkewX; }
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uint32_t getFlags() const { return fFlags; }
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sk_sp<SkTypeface> refTypeface() const { return fTypeface; }
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void setTypeface(sk_sp<SkTypeface>);
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void setSize(SkScalar);
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void setScaleX(SkScalar);
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void setSkewX(SkScalar);
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void setFlags(uint32_t);
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int textToGlyphs(const void* text, size_t byteLength, SkTextEncoding,
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SkGlyphID glyphs[], int maxGlyphCount) const;
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int countText(const void* text, size_t byteLength, SkTextEncoding encoding) {
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return this->textToGlyphs(text, byteLength, encoding, nullptr, 0);
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}
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SkScalar measureText(const void* text, size_t byteLength, SkTextEncoding) const;
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void LEGACY_applyToPaint(SkPaint*) const;
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static SkFont LEGACY_ExtractFromPaint(const SkPaint&);
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private:
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static constexpr unsigned kAllFlags = 0xFF;
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sk_sp<SkTypeface> fTypeface;
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SkScalar fSize;
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SkScalar fScaleX;
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SkScalar fSkewX;
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uint32_t fFlags;
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};
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#endif
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