Create wrapper around Shader native implementation
Created Shader classes to wrap existing shader classes
in the framework in order to handle creation of either an
SkShader or SkImageFilter.
Updated native Paint implementation to optionally configure
the currently configured SkShader or SkImageFilter
Bug: 143468037
Test: re-ran CtsGraphicsTestCases and CtsUiRenderingTestCases
Change-Id: I7663b92766c912ab3866cf4e39b268f6dcf5d8e2
diff --git a/libs/hwui/shader/RadialGradientShader.h b/libs/hwui/shader/RadialGradientShader.h
new file mode 100644
index 0000000..9a2ff13
--- /dev/null
+++ b/libs/hwui/shader/RadialGradientShader.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "Shader.h"
+#include "SkShader.h"
+
+namespace android::uirenderer {
+
+/**
+ * Shader implementation that renders a color ramp from the center outward to either as either
+ * a SkShader or SkImageFilter
+ */
+class RadialGradientShader : public Shader {
+public:
+ RadialGradientShader(const SkPoint& center, const float radius,
+ const std::vector<SkColor4f>& colors, sk_sp<SkColorSpace> colorSpace,
+ const SkScalar pos[], const SkTileMode tileMode, const uint32_t shaderFlags,
+ const SkMatrix* matrix);
+ ~RadialGradientShader() override;
+
+protected:
+ sk_sp<SkShader> makeSkShader() override;
+
+private:
+ sk_sp<SkShader> skShader;
+};
+} // namespace android::uirenderer
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