Merge pull request #1894 from abarth/stroke_cap

Add Paint#strokeCap

sky/engine/core/painting/Paint.cpp

@@ -34,6 +34,7 @@ enum PaintFields {
   kShader,
   kStyle,
   kTransferMode,
+  kStrokeCap,
 
   // kNumberOfPaintFields must be last.
   kNumberOfPaintFields,
@@ -81,6 +82,8 @@ Paint DartConverter<Paint>::FromDart(Dart_Handle dart_paint) {
     paint.setStyle(DartConverter<PaintingStyle>::FromDart(values[kStyle]));
   if (!Dart_IsNull(values[kTransferMode]))
     paint.setXfermodeMode(DartConverter<TransferMode>::FromDart(values[kTransferMode]));
+  if (!Dart_IsNull(values[kStrokeCap]))
+    paint.setStrokeCap(DartConverter<StrokeCap>::FromDart(values[kStrokeCap]));
 
   result.is_null = false;
   return result;

sky/engine/core/painting/Paint.dart

@@ -4,6 +4,17 @@
 
 part of dart_ui;
 
+enum StrokeCap {
+  /// Begin/end contours with no extension.
+  butt,
+
+  /// Begin/end contours with a semi-circle extension.
+  round,
+
+  /// Begin/end contours with a half square extension.
+  square,
+}
+
 class Paint {
   double strokeWidth;
   bool isAntiAlias = true;
@@ -15,6 +26,7 @@ class Paint {
   Shader shader;
   PaintingStyle style;
   TransferMode transferMode;
+  StrokeCap strokeCap;
 
   // Must match PaintFields enum in Paint.cpp.
   List<dynamic> get _value {
@@ -29,6 +41,7 @@ class Paint {
       shader,
       style,
       transferMode,
+      strokeCap,
     ];
   }
 

sky/engine/core/painting/Paint.h

@@ -38,6 +38,12 @@ struct DartConverter<Paint> {
                                           Dart_Handle& exception);
 };
 
+class StrokeCap {};
+
+template <>
+struct DartConverter<StrokeCap>
+    : public DartConverterEnum<SkPaint::Cap> {};
+
 }  // namespace blink
 
 #endif  // SKY_ENGINE_CORE_PAINTING_PAINT_H_