| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkFont_DEFINED |
| #define SkFont_DEFINED |
| |
| #include "SkScalar.h" |
| #include "SkRefCnt.h" |
| |
| class SkPaint; |
| class SkTypeface; |
| |
| enum SkTextEncoding { |
| kUTF8_SkTextEncoding, |
| kUTF16_SkTextEncoding, |
| kUTF32_SkTextEncoding, |
| kGlyphID_SkTextEncoding, |
| }; |
| |
| class SkFont { |
| public: |
| enum Flags { |
| /** |
| * Use the system's automatic hinting mechanism to hint the typeface. |
| */ |
| kForceAutoHinting_Flag = 1 << 0, |
| |
| /** |
| * If the typeface contains explicit bitmaps for hinting, use them. |
| * If both bytecode and auto hints are also specified, attempt to use the bitmaps first; |
| * if that fails (e.g. there are no bitmaps), then attempt to bytecode or autohint. |
| */ |
| kEmbeddedBitmaps_Flag = 1 << 1, |
| |
| kSubpixel_Flag = 1 << 2, |
| kLinearMetrics_Flag = 1 << 3, |
| |
| kVertical_Flag = 1 << 4, |
| kEmbolden_Flag = 1 << 5, |
| |
| kHinting_FlagShift = 6, |
| kHinting_FlagMask = 3, // 2 bits |
| |
| kDEPRECATED_Antialias_Flag = 1 << 8, // want to rely on paint for this |
| }; |
| |
| SkFont(sk_sp<SkTypeface>, SkScalar size, uint32_t flags); |
| SkFont(sk_sp<SkTypeface>, SkScalar size, SkScalar scaleX, SkScalar skewX, uint32_t flags); |
| |
| /** |
| * Return a font with the same attributes of this font, but with the specified size. |
| * If size is not supported (e.g. <= 0 or non-finite) NULL will be returned. |
| */ |
| SkFont makeWithSize(SkScalar size) const; |
| |
| /** |
| * Return a font with the same attributes of this font, but with the flags. |
| */ |
| SkFont makeWithFlags(uint32_t newFlags) const; |
| |
| SkTypeface* getTypeface() const { return fTypeface.get(); } |
| SkScalar getSize() const { return fSize; } |
| SkScalar getScaleX() const { return fScaleX; } |
| SkScalar getSkewX() const { return fSkewX; } |
| uint32_t getFlags() const { return fFlags; } |
| |
| sk_sp<SkTypeface> refTypeface() const { return fTypeface; } |
| |
| void setTypeface(sk_sp<SkTypeface>); |
| void setSize(SkScalar); |
| void setScaleX(SkScalar); |
| void setSkewX(SkScalar); |
| void setFlags(uint32_t); |
| |
| int textToGlyphs(const void* text, size_t byteLength, SkTextEncoding, |
| SkGlyphID glyphs[], int maxGlyphCount) const; |
| |
| int countText(const void* text, size_t byteLength, SkTextEncoding encoding) { |
| return this->textToGlyphs(text, byteLength, encoding, nullptr, 0); |
| } |
| |
| SkScalar measureText(const void* text, size_t byteLength, SkTextEncoding) const; |
| |
| void LEGACY_applyToPaint(SkPaint*) const; |
| static SkFont LEGACY_ExtractFromPaint(const SkPaint&); |
| |
| private: |
| static constexpr unsigned kAllFlags = 0x1FF; |
| |
| sk_sp<SkTypeface> fTypeface; |
| SkScalar fSize; |
| SkScalar fScaleX; |
| SkScalar fSkewX; |
| uint32_t fFlags; |
| }; |
| |
| #endif |