Add Platform::Supports for SupportsFeature API.

2 files changed, 15 insertions, 0 deletions

diff --git a/cocoa/PlatCocoa.h b/cocoa/PlatCocoa.h
index 0117fcc15..18d339536 100644
--- a/cocoa/PlatCocoa.h
+++ b/cocoa/PlatCocoa.h
@@ -79,6 +79,7 @@ public:
 	CGContextRef GetContext() { return gc; }
 
 	void Release() noexcept override;
+	int Supports(int feature) noexcept override;
 	bool Initialised() override;
 	void PenColour(ColourDesired fore) override;
 
diff --git a/cocoa/PlatCocoa.mm b/cocoa/PlatCocoa.mm
index 2f8778d11..33c24397f 100644
--- a/cocoa/PlatCocoa.mm
+++ b/cocoa/PlatCocoa.mm
@@ -319,6 +319,10 @@ void GetPositions(CTLineRef line, std::vector<CGFloat> &positions) {
 			 positions.begin(), std::plus<CGFloat>());
 }
 
+const int SupportsCocoa[] = {
+	SC_SUPPORTS_LINE_DRAWS_FINAL,
+};
+
 }
 
 //----------------- SurfaceImpl --------------------------------------------------------------------
@@ -452,6 +456,16 @@ void SurfaceImpl::InitPixMap(int width, int height, Surface *surface_, WindowID
 
 //--------------------------------------------------------------------------------------------------
 
+int SurfaceImpl::Supports(int feature) noexcept {
+	for (const int f : SupportsCocoa) {
+		if (f == feature)
+			return 1;
+	}
+	return 0;
+}
+
+//--------------------------------------------------------------------------------------------------
+
 void SurfaceImpl::PenColour(ColourDesired fore) {
 	if (gc) {
 		ColourDesired colour(fore.AsInteger());