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130 lines
3.8 KiB
C++
130 lines
3.8 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "ui/events/device_data_manager.h"
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#include "base/at_exit.h"
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#include "base/bind.h"
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#include "base/logging.h"
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#include "ui/events/input_device_event_observer.h"
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#include "ui/gfx/display.h"
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#include "ui/gfx/geometry/point3_f.h"
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namespace ui {
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// static
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DeviceDataManager* DeviceDataManager::instance_ = NULL;
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DeviceDataManager::DeviceDataManager() {
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CHECK(!instance_) << "Can not create multiple instances of DeviceDataManager";
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instance_ = this;
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base::AtExitManager::RegisterTask(
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base::Bind(&base::DeletePointer<DeviceDataManager>, this));
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for (int i = 0; i < kMaxDeviceNum; ++i) {
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touch_device_to_display_map_[i] = gfx::Display::kInvalidDisplayID;
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touch_radius_scale_map_[i] = 1.0;
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}
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}
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DeviceDataManager::~DeviceDataManager() {
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CHECK_EQ(this, instance_);
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instance_ = NULL;
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}
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// static
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DeviceDataManager* DeviceDataManager::instance() { return instance_; }
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// static
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void DeviceDataManager::CreateInstance() {
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if (instance())
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return;
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new DeviceDataManager();
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}
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// static
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DeviceDataManager* DeviceDataManager::GetInstance() {
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CHECK(instance_) << "DeviceDataManager was not created.";
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return instance_;
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}
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// static
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bool DeviceDataManager::HasInstance() {
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return instance_ != NULL;
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}
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void DeviceDataManager::ClearTouchTransformerRecord() {
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for (int i = 0; i < kMaxDeviceNum; i++) {
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touch_device_transformer_map_[i] = gfx::Transform();
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touch_device_to_display_map_[i] = gfx::Display::kInvalidDisplayID;
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touch_radius_scale_map_[i] = 1.0;
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}
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}
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bool DeviceDataManager::IsTouchDeviceIdValid(int touch_device_id) const {
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return (touch_device_id > 0 && touch_device_id < kMaxDeviceNum);
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}
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void DeviceDataManager::UpdateTouchInfoForDisplay(
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int64_t display_id,
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int touch_device_id,
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const gfx::Transform& touch_transformer) {
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if (IsTouchDeviceIdValid(touch_device_id)) {
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touch_device_to_display_map_[touch_device_id] = display_id;
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touch_device_transformer_map_[touch_device_id] = touch_transformer;
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}
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}
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void DeviceDataManager::UpdateTouchRadiusScale(int touch_device_id,
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double scale) {
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if (IsTouchDeviceIdValid(touch_device_id))
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touch_radius_scale_map_[touch_device_id] = scale;
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}
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void DeviceDataManager::ApplyTouchRadiusScale(int touch_device_id,
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double* radius) {
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if (IsTouchDeviceIdValid(touch_device_id))
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*radius = (*radius) * touch_radius_scale_map_[touch_device_id];
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}
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void DeviceDataManager::ApplyTouchTransformer(int touch_device_id,
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float* x,
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float* y) {
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if (IsTouchDeviceIdValid(touch_device_id)) {
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gfx::Point3F point(*x, *y, 0.0);
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const gfx::Transform& trans =
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touch_device_transformer_map_[touch_device_id];
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trans.TransformPoint(&point);
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*x = point.x();
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*y = point.y();
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}
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}
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int64_t DeviceDataManager::GetDisplayForTouchDevice(int touch_device_id) const {
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if (IsTouchDeviceIdValid(touch_device_id))
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return touch_device_to_display_map_[touch_device_id];
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return gfx::Display::kInvalidDisplayID;
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}
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void DeviceDataManager::OnTouchscreenDevicesUpdated(
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const std::vector<TouchscreenDevice>& devices) {
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touchscreen_devices_ = devices;
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FOR_EACH_OBSERVER(InputDeviceEventObserver,
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observers_,
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OnInputDeviceConfigurationChanged());
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}
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void DeviceDataManager::AddObserver(InputDeviceEventObserver* observer) {
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observers_.AddObserver(observer);
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}
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void DeviceDataManager::RemoveObserver(InputDeviceEventObserver* observer) {
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observers_.RemoveObserver(observer);
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}
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} // namespace ui
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