1// Copyright 2014 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "ui/events/device_data_manager.h" 6 7#include "base/at_exit.h" 8#include "base/bind.h" 9#include "base/logging.h" 10#include "ui/events/input_device_event_observer.h" 11#include "ui/gfx/display.h" 12#include "ui/gfx/geometry/point3_f.h" 13 14namespace ui { 15 16// static 17DeviceDataManager* DeviceDataManager::instance_ = NULL; 18 19DeviceDataManager::DeviceDataManager() { 20 CHECK(!instance_) << "Can not create multiple instances of DeviceDataManager"; 21 instance_ = this; 22 23 base::AtExitManager::RegisterTask( 24 base::Bind(&base::DeletePointer<DeviceDataManager>, this)); 25 26 for (int i = 0; i < kMaxDeviceNum; ++i) { 27 touch_device_to_display_map_[i] = gfx::Display::kInvalidDisplayID; 28 touch_radius_scale_map_[i] = 1.0; 29 } 30} 31 32DeviceDataManager::~DeviceDataManager() { 33 CHECK_EQ(this, instance_); 34 instance_ = NULL; 35} 36 37// static 38DeviceDataManager* DeviceDataManager::instance() { return instance_; } 39 40// static 41void DeviceDataManager::CreateInstance() { 42 if (instance()) 43 return; 44 45 new DeviceDataManager(); 46} 47 48// static 49DeviceDataManager* DeviceDataManager::GetInstance() { 50 CHECK(instance_) << "DeviceDataManager was not created."; 51 return instance_; 52} 53 54// static 55bool DeviceDataManager::HasInstance() { 56 return instance_ != NULL; 57} 58 59void DeviceDataManager::ClearTouchTransformerRecord() { 60 for (int i = 0; i < kMaxDeviceNum; i++) { 61 touch_device_transformer_map_[i] = gfx::Transform(); 62 touch_device_to_display_map_[i] = gfx::Display::kInvalidDisplayID; 63 touch_radius_scale_map_[i] = 1.0; 64 } 65} 66 67bool DeviceDataManager::IsTouchDeviceIdValid(int touch_device_id) const { 68 return (touch_device_id > 0 && touch_device_id < kMaxDeviceNum); 69} 70 71void DeviceDataManager::UpdateTouchInfoForDisplay( 72 int64_t display_id, 73 int touch_device_id, 74 const gfx::Transform& touch_transformer) { 75 if (IsTouchDeviceIdValid(touch_device_id)) { 76 touch_device_to_display_map_[touch_device_id] = display_id; 77 touch_device_transformer_map_[touch_device_id] = touch_transformer; 78 } 79} 80 81void DeviceDataManager::UpdateTouchRadiusScale(int touch_device_id, 82 double scale) { 83 if (IsTouchDeviceIdValid(touch_device_id)) 84 touch_radius_scale_map_[touch_device_id] = scale; 85} 86 87void DeviceDataManager::ApplyTouchRadiusScale(int touch_device_id, 88 double* radius) { 89 if (IsTouchDeviceIdValid(touch_device_id)) 90 *radius = (*radius) * touch_radius_scale_map_[touch_device_id]; 91} 92 93void DeviceDataManager::ApplyTouchTransformer(int touch_device_id, 94 float* x, 95 float* y) { 96 if (IsTouchDeviceIdValid(touch_device_id)) { 97 gfx::Point3F point(*x, *y, 0.0); 98 const gfx::Transform& trans = 99 touch_device_transformer_map_[touch_device_id]; 100 trans.TransformPoint(&point); 101 *x = point.x(); 102 *y = point.y(); 103 } 104} 105 106int64_t DeviceDataManager::GetDisplayForTouchDevice(int touch_device_id) const { 107 if (IsTouchDeviceIdValid(touch_device_id)) 108 return touch_device_to_display_map_[touch_device_id]; 109 return gfx::Display::kInvalidDisplayID; 110} 111 112void DeviceDataManager::OnTouchscreenDevicesUpdated( 113 const std::vector<TouchscreenDevice>& devices) { 114 touchscreen_devices_ = devices; 115 116 FOR_EACH_OBSERVER(InputDeviceEventObserver, 117 observers_, 118 OnInputDeviceConfigurationChanged()); 119} 120 121void DeviceDataManager::AddObserver(InputDeviceEventObserver* observer) { 122 observers_.AddObserver(observer); 123} 124 125void DeviceDataManager::RemoveObserver(InputDeviceEventObserver* observer) { 126 observers_.RemoveObserver(observer); 127} 128 129} // namespace ui 130