| #include "VirtualTouchpad.h" |
| |
| #include <cutils/log.h> |
| #include <inttypes.h> |
| #include <linux/input.h> |
| |
| namespace android { |
| namespace dvr { |
| |
| namespace { |
| |
| // Virtual evdev device properties. |
| static const char* const kDeviceName = "vr window manager virtual touchpad"; |
| static constexpr int16_t kDeviceBusType = BUS_VIRTUAL; |
| static constexpr int16_t kDeviceVendor = 0x18D1; // Google USB vendor ID. |
| static constexpr int16_t kDeviceProduct = 0x5652; // 'VR' |
| static constexpr int16_t kDeviceVersion = 0x0001; |
| static constexpr int32_t kWidth = 0x10000; |
| static constexpr int32_t kHeight = 0x10000; |
| static constexpr int32_t kSlots = 2; |
| |
| } // anonymous namespace |
| |
| int VirtualTouchpad::Initialize() { |
| if (!injector_) { |
| owned_injector_.reset(new EvdevInjector()); |
| injector_ = owned_injector_.get(); |
| } |
| injector_->ConfigureBegin(kDeviceName, kDeviceBusType, kDeviceVendor, |
| kDeviceProduct, kDeviceVersion); |
| injector_->ConfigureInputProperty(INPUT_PROP_DIRECT); |
| injector_->ConfigureMultiTouchXY(0, 0, kWidth - 1, kHeight - 1); |
| injector_->ConfigureAbsSlots(kSlots); |
| injector_->ConfigureKey(BTN_TOUCH); |
| injector_->ConfigureEnd(); |
| return injector_->GetError(); |
| } |
| |
| int VirtualTouchpad::Touch(float x, float y, float pressure) { |
| int error = 0; |
| int32_t device_x = x * kWidth; |
| int32_t device_y = y * kHeight; |
| touches_ = ((touches_ & 1) << 1) | (pressure > 0); |
| ALOGV("(%f,%f) %f -> (%" PRId32 ",%" PRId32 ") %d", |
| x, y, pressure, device_x, device_y, touches_); |
| |
| injector_->ResetError(); |
| switch (touches_) { |
| case 0b00: // Hover continues. |
| if (device_x != last_device_x_ || device_y != last_device_y_) { |
| injector_->SendMultiTouchXY(0, 0, device_x, device_y); |
| injector_->SendSynReport(); |
| } |
| break; |
| case 0b01: // Touch begins. |
| // Press. |
| injector_->SendMultiTouchXY(0, 0, device_x, device_y); |
| injector_->SendKey(BTN_TOUCH, EvdevInjector::KEY_PRESS); |
| injector_->SendSynReport(); |
| break; |
| case 0b10: // Touch ends. |
| injector_->SendKey(BTN_TOUCH, EvdevInjector::KEY_RELEASE); |
| injector_->SendMultiTouchLift(0); |
| injector_->SendSynReport(); |
| break; |
| case 0b11: // Touch continues. |
| if (device_x != last_device_x_ || device_y != last_device_y_) { |
| injector_->SendMultiTouchXY(0, 0, device_x, device_y); |
| injector_->SendSynReport(); |
| } |
| break; |
| } |
| last_device_x_ = device_x; |
| last_device_y_ = device_y; |
| |
| return injector_->GetError(); |
| } |
| |
| } // namespace dvr |
| } // namespace android |