SkTextBlob Reference === ---

class SkTextBlob final : public SkNVRefCnt<SkTextBlob> {
public:
    const SkRect& bounds() const;
    uint32_t uniqueID() const;
    static sk_sp<SkTextBlob> MakeFromText( const void* text, size_t byteLength, const SkPaint& paint);
    static sk_sp<SkTextBlob> MakeFromString(const char* string, const SkPaint& paint);
    size_t serialize(const SkSerialProcs& procs, void* memory, size_t memory_size) const;
    sk_sp<SkData> serialize(const SkSerialProcs& procs) const;
    static sk_sp<SkTextBlob> Deserialize(const void* data, size_t size,
                                         const SkDeserialProcs& procs);
};

SkTextBlob combines multiple text runs into an immutable container. Each text run consists of Glyphs, Paint, and position. Only parts of Paint related to fonts and text rendering are used by run. ---

const SkRect& bounds() const

Returns conservative bounding box. Uses Paint associated with each glyph to determine glyph bounds, and unions all bounds. Returned bounds may be larger than the bounds of all Glyphs in runs. ### Return Value conservative bounding box ### Example

### See Also SkPath::getBounds ---

uint32_t uniqueID() const

Returns a non-zero value unique among all text blobs. ### Return Value identifier for Text Blob ### Example

### See Also SkRefCnt ---

static sk sp<SkTextBlob> MakeFromText(
            const void* text, size_t byteLength,
                                      const SkPaint& paint)

Creates Text Blob with a single run. text meaning depends on Paint Text Encoding; by default, text is encoded as UTF-8. paint contains attributes used to define the run text: Typeface, Paint Text Size, Paint Text Scale X, Paint Text Skew X, Paint Text Align, Paint Hinting, Anti Alias, Paint Fake Bold, Font Embedded Bitmaps, Full Hinting Spacing, LCD Text, Linear Text, and Subpixel Text. ### Parameters

`text`	character code points or Glyphs drawn
`byteLength`	byte length of text array
`paint`	text size, typeface, text scale, and so on, used to draw

### Return Value Text Blob constructed from one run ### Example

### See Also MakeFromString TextBlobBuilder ---

static sk sp<SkTextBlob> MakeFromString(const char* string, const SkPaint& paint)

Creates Text Blob with a single run. string meaning depends on Paint Text Encoding; by default, string is encoded as UTF-8. paint contains Paint Font Metrics used to define the run text: Typeface, Paint Text Size, Paint Text Scale X, Paint Text Skew X, Paint Text Align, Paint Hinting, Anti Alias, Paint Fake Bold, Font Embedded Bitmaps, Full Hinting Spacing, LCD Text, Linear Text, and Subpixel Text. ### Parameters

`string`	character code points or Glyphs drawn
`paint`	text size, typeface, text scale, and so on, used to draw

### Return Value Text Blob constructed from one run ### Example

### See Also MakeFromText TextBlobBuilder ---

size_t serialize(const SkSerialProcs& procs, void* memory, size_t memory_size) const

Writes data to allow later reconstruction of Text Blob. memory points to storage to receive the encoded data, and memory_size describes the size of storage. Returns bytes used if provided storage is large enough to hold all data; otherwise, returns zero. procs.fTypefaceProc permits supplying a custom function to encode Typeface. If procs.fTypefaceProc is nullptr, default encoding is used. procs.fTypefaceCtx may be used to provide user context to procs.fTypefaceProc; procs.fTypefaceProc is called with a pointer to Typeface and user context. ### Parameters

`procs`	custom serial data encoders; may be nullptr
`memory`	storage for data
`size`	size of storage

### Return Value bytes written, or zero if required storage is larger than memory_size ### Example

### See Also Deserialize SkSerialProcs ---

sk sp<SkData> serialize(const SkSerialProcs& procs) const

Returns storage containing Data describing Text Blob, using optional custom encoders. procs.fTypefaceProc permits supplying a custom function to encode Typeface. If procs.fTypefaceProc is nullptr, default encoding is used. procs.fTypefaceCtx may be used to provide user context to procs.fTypefaceProc; procs.fTypefaceProc is called with a pointer to Typeface and user context. ### Parameters

procs custom serial data encoders; may be nullptr

### Return Value storage containing serialized Text Blob ### Example

### See Also Deserialize SkData SkSerialProcs ---

static sk sp<SkTextBlob> Deserialize(const void* data, size_t size, const SkDeserialProcs& procs)

Recreates Text Blob that was serialized into data. Returns constructed Text Blob if successful; otherwise, returns nullptr. Fails if size is smaller than required data length, or if data does not permit constructing valid Text Blob. procs.fTypefaceProc permits supplying a custom function to decode Typeface. If procs.fTypefaceProc is nullptr, default decoding is used. procs.fTypefaceCtx may be used to provide user context to procs.fTypefaceProc; procs.fTypefaceProc is called with a pointer to Typeface data, data byte length, and user context. ### Parameters

`data`	pointer for serial data
`size`	size of data
`procs`	custom serial data decoders; may be nullptr

### Return Value Text Blob constructed from data in memory ### Example

Text "" replaces "World!", but does not update its metrics. When drawn, "" uses the spacing computed for "World!".

### See Also serialize^[2] SkDeserialProcs