michael@0: /*
michael@0:  * Copyright 2012 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #ifndef SkStrokeRec_DEFINED
michael@0: #define SkStrokeRec_DEFINED
michael@0: 
michael@0: #include "SkPaint.h"
michael@0: 
michael@0: class SkPath;
michael@0: 
michael@0: class SkStrokeRec {
michael@0: public:
michael@0:     enum InitStyle {
michael@0:         kHairline_InitStyle,
michael@0:         kFill_InitStyle
michael@0:     };
michael@0:     SkStrokeRec(InitStyle style);
michael@0: 
michael@0:     SkStrokeRec(const SkStrokeRec&);
michael@0:     explicit SkStrokeRec(const SkPaint&);
michael@0: 
michael@0:     enum Style {
michael@0:         kHairline_Style,
michael@0:         kFill_Style,
michael@0:         kStroke_Style,
michael@0:         kStrokeAndFill_Style
michael@0:     };
michael@0: 
michael@0:     Style getStyle() const;
michael@0:     SkScalar getWidth() const { return fWidth; }
michael@0:     SkScalar getMiter() const { return fMiterLimit; }
michael@0:     SkPaint::Cap getCap() const { return fCap; }
michael@0:     SkPaint::Join getJoin() const { return fJoin; }
michael@0: 
michael@0:     bool isHairlineStyle() const {
michael@0:         return kHairline_Style == this->getStyle();
michael@0:     }
michael@0: 
michael@0:     bool isFillStyle() const {
michael@0:         return kFill_Style == this->getStyle();
michael@0:     }
michael@0: 
michael@0:     void setFillStyle();
michael@0:     void setHairlineStyle();
michael@0:     /**
michael@0:      *  Specify the strokewidth, and optionally if you want stroke + fill.
michael@0:      *  Note, if width==0, then this request is taken to mean:
michael@0:      *      strokeAndFill==true -> new style will be Fill
michael@0:      *      strokeAndFill==false -> new style will be Hairline
michael@0:      */
michael@0:     void setStrokeStyle(SkScalar width, bool strokeAndFill = false);
michael@0: 
michael@0:     void setStrokeParams(SkPaint::Cap cap, SkPaint::Join join, SkScalar miterLimit) {
michael@0:         fCap = cap;
michael@0:         fJoin = join;
michael@0:         fMiterLimit = miterLimit;
michael@0:     }
michael@0: 
michael@0:     /**
michael@0:      *  Returns true if this specifes any thick stroking, i.e. applyToPath()
michael@0:      *  will return true.
michael@0:      */
michael@0:     bool needToApply() const {
michael@0:         Style style = this->getStyle();
michael@0:         return (kStroke_Style == style) || (kStrokeAndFill_Style == style);
michael@0:     }
michael@0: 
michael@0:     /**
michael@0:      *  Apply these stroke parameters to the src path, returning the result
michael@0:      *  in dst.
michael@0:      *
michael@0:      *  If there was no change (i.e. style == hairline or fill) this returns
michael@0:      *  false and dst is unchanged. Otherwise returns true and the result is
michael@0:      *  stored in dst.
michael@0:      *
michael@0:      *  src and dst may be the same path.
michael@0:      */
michael@0:     bool applyToPath(SkPath* dst, const SkPath& src) const;
michael@0: 
michael@0:     bool operator==(const SkStrokeRec& other) const {
michael@0:             return fWidth == other.fWidth &&
michael@0:                    fMiterLimit == other.fMiterLimit &&
michael@0:                    fCap == other.fCap &&
michael@0:                    fJoin == other.fJoin &&
michael@0:                    fStrokeAndFill == other.fStrokeAndFill;
michael@0:     }
michael@0: 
michael@0: private:
michael@0:     SkScalar        fWidth;
michael@0:     SkScalar        fMiterLimit;
michael@0:     SkPaint::Cap    fCap;
michael@0:     SkPaint::Join   fJoin;
michael@0:     bool            fStrokeAndFill;
michael@0: };
michael@0: 
michael@0: #endif