1 #include "VirtualTouchpadClient.h" 2 3 #include <android/dvr/IVirtualTouchpadService.h> 4 #include <binder/IServiceManager.h> 5 6 namespace android { 7 namespace dvr { 8 9 namespace { 10 11 class VirtualTouchpadClientImpl : public VirtualTouchpadClient { 12 public: 13 VirtualTouchpadClientImpl() {} 14 ~VirtualTouchpadClientImpl() override { 15 if (service_ != nullptr) { 16 Detach(); 17 } 18 } 19 20 status_t Attach() { 21 if (service_ != nullptr) { 22 return ALREADY_EXISTS; 23 } 24 sp<IServiceManager> sm = defaultServiceManager(); 25 if (sm == nullptr) { 26 ALOGE("no service manager"); 27 return NO_INIT; 28 } 29 sp<IVirtualTouchpadService> service = 30 interface_cast<IVirtualTouchpadService>( 31 sm->getService(IVirtualTouchpadService::SERVICE_NAME())); 32 if (service == nullptr) { 33 ALOGE("failed to get service"); 34 return NAME_NOT_FOUND; 35 } 36 service_ = service; 37 return service_->attach().transactionError(); 38 } 39 40 status_t Detach() { 41 if (service_ == nullptr) { 42 return NO_INIT; 43 } 44 status_t status = service_->detach().transactionError(); 45 service_ = nullptr; 46 return status; 47 } 48 49 status_t Touch(int touchpad, float x, float y, float pressure) override { 50 if (service_ == nullptr) { 51 return NO_INIT; 52 } 53 return service_->touch(touchpad, x, y, pressure).transactionError(); 54 } 55 56 status_t ButtonState(int touchpad, int buttons) override { 57 if (service_ == nullptr) { 58 return NO_INIT; 59 } 60 return service_->buttonState(touchpad, buttons).transactionError(); 61 } 62 63 void dumpInternal(String8& result) override { 64 result.append("[virtual touchpad]\n"); 65 result.appendFormat("connected = %s\n\n", 66 service_ != nullptr ? "true" : "false"); 67 } 68 69 private: 70 sp<IVirtualTouchpadService> service_; 71 }; 72 73 } // anonymous namespace 74 75 std::unique_ptr<VirtualTouchpad> VirtualTouchpadClient::Create() { 76 return std::unique_ptr<VirtualTouchpad>(new VirtualTouchpadClientImpl()); 77 } 78 79 } // namespace dvr 80 } // namespace android 81
