Split SkGradientShader into separate files for each gradient subclass.
Review URL: https://codereview.appspot.com/6447049
git-svn-id: http://skia.googlecode.com/svn/trunk@4792 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/effects/gradients/SkTwoPointConicalGradient.h b/src/effects/gradients/SkTwoPointConicalGradient.h
new file mode 100644
index 0000000..de3e80d
--- /dev/null
+++ b/src/effects/gradients/SkTwoPointConicalGradient.h
@@ -0,0 +1,82 @@
+
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+ #ifndef SkTwoPointConicalGradient_DEFINED
+ #define SkTwoPointConicalGradient_DEFINED
+
+#include "SkGradientShaderPriv.h"
+
+struct TwoPtRadial {
+ enum {
+ kDontDrawT = 0x80000000
+ };
+
+ float fCenterX, fCenterY;
+ float fDCenterX, fDCenterY;
+ float fRadius;
+ float fDRadius;
+ float fA;
+ float fRadius2;
+ float fRDR;
+
+ void init(const SkPoint& center0, SkScalar rad0,
+ const SkPoint& center1, SkScalar rad1);
+
+ // used by setup and nextT
+ float fRelX, fRelY, fIncX, fIncY;
+ float fB, fDB;
+
+ void setup(SkScalar fx, SkScalar fy, SkScalar dfx, SkScalar dfy);
+ SkFixed nextT();
+
+ static bool DontDrawT(SkFixed t) {
+ return kDontDrawT == (uint32_t)t;
+ }
+};
+
+
+class SkTwoPointConicalGradient : public SkGradientShaderBase {
+ TwoPtRadial fRec;
+ void init();
+
+public:
+ SkTwoPointConicalGradient(const SkPoint& start, SkScalar startRadius,
+ const SkPoint& end, SkScalar endRadius,
+ const SkColor colors[], const SkScalar pos[],
+ int colorCount, SkShader::TileMode mode,
+ SkUnitMapper* mapper);
+
+ virtual void shadeSpan(int x, int y, SkPMColor* dstCParam,
+ int count) SK_OVERRIDE;
+ virtual bool setContext(const SkBitmap& device,
+ const SkPaint& paint,
+ const SkMatrix& matrix) SK_OVERRIDE;
+
+ virtual BitmapType asABitmap(SkBitmap* bitmap,
+ SkMatrix* matrix,
+ TileMode* xy) const;
+ virtual SkShader::GradientType asAGradient(GradientInfo* info) const SK_OVERRIDE;
+ virtual GrCustomStage* asNewCustomStage(GrContext* context,
+ GrSamplerState* sampler) const SK_OVERRIDE;
+
+ SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTwoPointConicalGradient)
+
+protected:
+ SkTwoPointConicalGradient(SkFlattenableReadBuffer& buffer);
+ virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE;
+
+private:
+ typedef SkGradientShaderBase INHERITED;
+ const SkPoint fCenter1;
+ const SkPoint fCenter2;
+ const SkScalar fRadius1;
+ const SkScalar fRadius2;
+};
+
+#endif
+