Add support for arcs.

Change-Id: I96c057ff4eb1b464b03f132da0b85333777bee4f

1 files changed, 31 insertions, 0 deletions

diff --git a/libs/hwui/ShapeCache.cpp b/libs/hwui/ShapeCache.cpp
index da86075602bc..0d7cd9cb9a72 100644
--- a/libs/hwui/ShapeCache.cpp
+++ b/libs/hwui/ShapeCache.cpp
@@ -114,5 +114,36 @@ PathTexture* RectShapeCache::getRect(float width, float height, SkPaint* paint)
     return texture;
 }
 
+///////////////////////////////////////////////////////////////////////////////
+// Arcs
+///////////////////////////////////////////////////////////////////////////////
+
+ArcShapeCache::ArcShapeCache(): ShapeCache<ArcShapeCacheEntry>(
+        "arc", PROPERTY_SHAPE_CACHE_SIZE, DEFAULT_SHAPE_CACHE_SIZE) {
+}
+
+PathTexture* ArcShapeCache::getArc(float width, float height,
+        float startAngle, float sweepAngle, bool useCenter, SkPaint* paint) {
+    ArcShapeCacheEntry entry(width, height, startAngle, sweepAngle, useCenter, paint);
+    PathTexture* texture = get(entry);
+
+    if (!texture) {
+        SkPath path;
+        SkRect r;
+        r.set(0.0f, 0.0f, width, height);
+        if (useCenter) {
+            path.moveTo(r.centerX(), r.centerY());
+        }
+        path.arcTo(r, startAngle, sweepAngle, !useCenter);
+        if (useCenter) {
+            path.close();
+        }
+
+        texture = addTexture(entry, &path, paint);
+    }
+
+    return texture;
+}
+
 }; // namespace uirenderer
 }; // namespace android