Add support for CanvasOps to draw multiple lines or
points in a single call
--DrawPoints
--DrawLines
Introduced wrapper Points class to
handle containing collections of SkPoints
that is compatible with ref counted pointer
implementations
Bug: 174854640
Test: Added tests to CanvasOpTests
Change-Id: Id4a47a470815d2970c54dac25e59af8512193348
diff --git a/libs/hwui/canvas/Points.h b/libs/hwui/canvas/Points.h
new file mode 100644
index 0000000..05e6a7d
--- /dev/null
+++ b/libs/hwui/canvas/Points.h
@@ -0,0 +1,48 @@
+/*
+ * 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.
+ */
+#include <ui/FatVector.h>
+#include "SkPoint.h"
+#include "SkRefCnt.h"
+
+/**
+ * Collection of points that are ref counted and to be used with
+ * various drawing calls that consume SkPoint as inputs like
+ * drawLines/drawPoints
+ */
+class Points: public SkNVRefCnt<SkPoint> {
+public:
+ Points(int size){
+ skPoints.resize(size);
+ }
+
+ Points(std::initializer_list<SkPoint> init): skPoints(init) { }
+
+ SkPoint& operator[](int index) {
+ return skPoints[index];
+ }
+
+ const SkPoint* data() const {
+ return skPoints.data();
+ }
+
+ size_t size() const {
+ return skPoints.size();
+ }
+private:
+ // Initialize the size to contain 2 SkPoints on the stack for optimized
+ // drawLine calls that require 2 SkPoints for start/end points of the line
+ android::FatVector<SkPoint, 2> skPoints;
+};
