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Skia
2DGraphicsLibrary
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Skia
2DGraphicsLibrary
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SkDashPathEffect is a subclass of SkPathEffect that implements dashing. More...
#include <SkDashPathEffect.h>
Public Member Functions | |
| virtual bool | filterPath (SkPath *dst, const SkPath &src, SkStrokeRec *, const SkRect *) const override |
| Given a src path (input) and a stroke-rec (input and output), apply this effect to the src path, returning the new path in dst, and return true. More... | |
| virtual bool | asPoints (PointData *results, const SkPath &src, const SkStrokeRec &, const SkMatrix &, const SkRect *) const override |
| Does applying this path effect to 'src' yield a set of points? If so, optionally return the points in 'results'. | |
| DashType | asADash (DashInfo *info) const override |
 Public Member Functions inherited from SkPathEffect | |
| virtual void | computeFastBounds (SkRect *dst, const SkRect &src) const |
| Compute a conservative bounds for its effect, given the src bounds. More... | |
| Public Member Functions inherited from SkFlattenable | |
| virtual Factory | getFactory () const =0 |
| Implement this to return a factory function pointer that can be called to recreate your class given a buffer (previously written to by your override of flatten(). | |
| virtual const char * | getTypeName () const |
| Returns the name of the object's class. More... | |
| Public Member Functions inherited from SkRefCntBase | |
| SkRefCntBase () | |
| Default construct, initializing the reference count to 1. | |
| virtual | ~SkRefCntBase () |
| Destruct, asserting that the reference count is 1. | |
| int32_t | getRefCnt () const |
| Return the reference count. More... | |
| void | validate () const |
| bool | unique () const |
| May return true if the caller is the only owner. More... | |
| void | ref () const |
| Increment the reference count. More... | |
| void | unref () const |
| Decrement the reference count. More... | |
Static Public Member Functions | |
| static sk_sp< SkPathEffect > | Make (const SkScalar intervals[], int count, SkScalar phase) |
| intervals: array containing an even number of entries (>=2), with the even indices specifying the length of "on" intervals, and the odd indices specifying the length of "off" intervals. More... | |
| Static Public Member Functions inherited from SkFlattenable | |
| static Factory | NameToFactory (const char name[]) |
| static const char * | FactoryToName (Factory) |
| static bool | NameToType (const char name[], Type *type) |
| static void | Register (const char name[], Factory, Type) |
Protected Member Functions | |
| SkDashPathEffect (const SkScalar intervals[], int count, SkScalar phase) | |
| void | flatten (SkWriteBuffer &) const override |
| Override this if your subclass needs to record data that it will need to recreate itself from its CreateProc (returned by getFactory()). | |
| Protected Member Functions inherited from SkRefCntBase | |
| void | internal_dispose_restore_refcnt_to_1 () const |
| Allow subclasses to call this if they've overridden internal_dispose so they can reset fRefCnt before the destructor is called or if they choose not to call the destructor (e.g. More... | |
Private Types | |
| typedef SkPathEffect | INHERITED |
Private Attributes | |
| SkScalar * | fIntervals |
| int32_t | fCount |
| SkScalar | fPhase |
| SkScalar | fInitialDashLength |
| int32_t | fInitialDashIndex |
| SkScalar | fIntervalLength |
Additional Inherited Members | |
| Public Types inherited from SkPathEffect | |
| enum | DashType { kNone_DashType, kDash_DashType } |
| If the PathEffect can be represented as a dash pattern, asADash will return kDash_DashType and None otherwise. More... | |
| Public Types inherited from SkFlattenable | |
| enum | Type { kSkColorFilter_Type, kSkDrawable_Type, kSkDrawLooper_Type, kSkImageFilter_Type, kSkMaskFilter_Type, kSkPathEffect_Type, kSkPixelRef_Type, kSkRasterizer_Type, kSkShader_Type, kSkUnused_Type, kSkXfermode_Type, kSkNormalSource_Type } |
| typedef sk_sp< SkFlattenable >(* | Factory )(SkReadBuffer &) |
SkDashPathEffect is a subclass of SkPathEffect that implements dashing.
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overridevirtual |
Given a src path (input) and a stroke-rec (input and output), apply this effect to the src path, returning the new path in dst, and return true.
If this effect cannot be applied, return false and ignore dst and stroke-rec.
The stroke-rec specifies the initial request for stroking (if any). The effect can treat this as input only, or it can choose to change the rec as well. For example, the effect can decide to change the stroke's width or join, or the effect can change the rec from stroke to fill (or fill to stroke) in addition to returning a new (dst) path.
If this method returns true, the caller will apply (as needed) the resulting stroke-rec to dst and then draw.
Implements SkPathEffect.
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static |
intervals: array containing an even number of entries (>=2), with the even indices specifying the length of "on" intervals, and the odd indices specifying the length of "off" intervals.
count: number of elements in the intervals array phase: offset into the intervals array (mod the sum of all of the intervals).
For example: if intervals[] = {10, 20}, count = 2, and phase = 25, this will set up a dashed path like so: 5 pixels off 10 pixels on 20 pixels off 10 pixels on 20 pixels off ... A phase of -5, 25, 55, 85, etc. would all result in the same path, because the sum of all the intervals is 30.
Note: only affects stroked paths.
