1 #ifndef ANDROID_DVR_VIRTUAL_TOUCHPAD_SERVICE_H
2 #define ANDROID_DVR_VIRTUAL_TOUCHPAD_SERVICE_H
3 
4 #include <android/dvr/BnVirtualTouchpadService.h>
5 
6 #include "VirtualTouchpad.h"
7 
8 namespace android {
9 namespace dvr {
10 
11 // VirtualTouchpadService implements the service side of
12 // the Binder interface defined in VirtualTouchpadService.aidl.
13 //
14 class VirtualTouchpadService : public BnVirtualTouchpadService {
15  public:
VirtualTouchpadService(std::unique_ptr<VirtualTouchpad> touchpad)16   explicit VirtualTouchpadService(std::unique_ptr<VirtualTouchpad> touchpad)
17       : touchpad_(std::move(touchpad)), client_pid_(0) {}
18   ~VirtualTouchpadService() override;
19 
20  protected:
21   // Implements IVirtualTouchpadService.
22   binder::Status attach() override;
23   binder::Status detach() override;
24   binder::Status touch(int touchpad, float x, float y, float pressure) override;
25   binder::Status buttonState(int touchpad, int buttons) override;
26   binder::Status scroll(int touchpad, float x, float y) override;
27 
28   // Implements BBinder::dump().
29   status_t dump(int fd, const Vector<String16>& args) override;
30 
31  private:
32   bool CheckPermissions();
33   bool CheckTouchPermission(pid_t* out_pid);
34 
35   std::unique_ptr<VirtualTouchpad> touchpad_;
36 
37   // Only one client at a time can use the virtual touchpad.
38   pid_t client_pid_;
39 
40   VirtualTouchpadService(const VirtualTouchpadService&) = delete;
41   void operator=(const VirtualTouchpadService&) = delete;
42 };
43 
44 }  // namespace dvr
45 }  // namespace android
46 
47 #endif  // ANDROID_DVR_VIRTUAL_TOUCHPAD_SERVICE_H
48