Allow embedders to specify pointer device IDs. (flutter#7790)

ashawn · Feb 12, 2019 · 87b40ba · 87b40ba
1 parent 4663d35
commit 87b40ba
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diff --git a/shell/platform/embedder/embedder.cc b/shell/platform/embedder/embedder.cc
@@ -576,6 +576,7 @@ FlutterEngineResult FlutterEngineSendPointerEvent(
     pointer_data.kind = blink::PointerData::DeviceKind::kMouse;
     pointer_data.physical_x = SAFE_ACCESS(current, x, 0.0);
     pointer_data.physical_y = SAFE_ACCESS(current, y, 0.0);
+    pointer_data.device = SAFE_ACCESS(current, device, 0);
     packet->SetPointerData(i, pointer_data);
     current = reinterpret_cast<const FlutterPointerEvent*>(
         reinterpret_cast<const uint8_t*>(current) + current->struct_size);

diff --git a/shell/platform/embedder/embedder.h b/shell/platform/embedder/embedder.h
@@ -157,6 +157,9 @@ typedef struct {
   size_t timestamp;  // in microseconds.
   double x;
   double y;
+  // An optional device identifier. If this is not specified, it is assumed that
+  // the embedder has no multitouch capability.
+  int32_t device;
 } FlutterPointerEvent;
 
 struct _FlutterPlatformMessageResponseHandle;