| // Copyright 2015 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "cobalt/input/input_device_manager_desktop.h" |
| |
| #include <cmath> |
| #include <string> |
| |
| #include "cobalt/base/token.h" |
| #include "cobalt/base/tokens.h" |
| #include "cobalt/dom/keyboard_event.h" |
| #include "cobalt/dom/keyboard_event_init.h" |
| #include "cobalt/dom/pointer_event.h" |
| #include "cobalt/dom/pointer_event_init.h" |
| #include "cobalt/dom/wheel_event.h" |
| #include "cobalt/dom/wheel_event_init.h" |
| #include "cobalt/input/create_default_camera_3d.h" |
| #include "cobalt/input/input_poller_impl.h" |
| #include "cobalt/system_window/input_event.h" |
| |
| namespace cobalt { |
| namespace input { |
| |
| InputDeviceManagerDesktop::InputDeviceManagerDesktop( |
| const KeyboardEventCallback& keyboard_event_callback, |
| const PointerEventCallback& pointer_event_callback, |
| const WheelEventCallback& wheel_event_callback, |
| system_window::SystemWindow* system_window) |
| : system_window_(system_window), |
| input_event_callback_( |
| base::Bind(&InputDeviceManagerDesktop::HandleInputEvent, |
| base::Unretained(this))), |
| keypress_generator_filter_(keyboard_event_callback), |
| pointer_event_callback_(pointer_event_callback), |
| wheel_event_callback_(wheel_event_callback) { |
| input_poller_ = new InputPollerImpl(); |
| DCHECK(system_window_); |
| camera_3d_ = |
| CreatedDefaultCamera3D(system_window->GetSbWindow(), input_poller_); |
| |
| if (system_window_) { |
| // Add this object's keyboard event callback to the system window. |
| system_window_->event_dispatcher()->AddEventCallback( |
| system_window::InputEvent::TypeId(), input_event_callback_); |
| } |
| } |
| |
| InputDeviceManagerDesktop::~InputDeviceManagerDesktop() { |
| // If we have an associated system window, remove our callback from it. |
| if (system_window_) { |
| system_window_->event_dispatcher()->RemoveEventCallback( |
| system_window::InputEvent::TypeId(), input_event_callback_); |
| } |
| } |
| |
| namespace { |
| |
| COMPILE_ASSERT(static_cast<uint32_t>(kSbKeyModifiersNone) == |
| system_window::InputEvent::kNoModifier && |
| static_cast<uint32_t>(kSbKeyModifiersAlt) == |
| system_window::InputEvent::kAltKey && |
| static_cast<uint32_t>(kSbKeyModifiersCtrl) == |
| system_window::InputEvent::kCtrlKey && |
| static_cast<uint32_t>(kSbKeyModifiersMeta) == |
| system_window::InputEvent::kMetaKey && |
| static_cast<uint32_t>(kSbKeyModifiersShift) == |
| system_window::InputEvent::kShiftKey, |
| Mismatched_modifier_enums); |
| #if SB_API_VERSION >= SB_POINTER_INPUT_API_VERSION |
| COMPILE_ASSERT(static_cast<uint32_t>(kSbKeyModifiersPointerButtonLeft) == |
| system_window::InputEvent::kLeftButton && |
| static_cast<uint32_t>(kSbKeyModifiersPointerButtonRight) == |
| system_window::InputEvent::kRightButton && |
| static_cast<uint32_t>(kSbKeyModifiersPointerButtonMiddle) == |
| system_window::InputEvent::kMiddleButton && |
| static_cast<uint32_t>(kSbKeyModifiersPointerButtonBack) == |
| system_window::InputEvent::kBackButton && |
| static_cast<uint32_t>(kSbKeyModifiersPointerButtonForward) == |
| system_window::InputEvent::kForwardButton, |
| Mismatched_modifier_enums); |
| #endif |
| |
| void UpdateEventModifierInit(const system_window::InputEvent* input_event, |
| EventModifierInit* event) { |
| const uint32 modifiers = input_event->modifiers(); |
| event->set_ctrl_key(modifiers & system_window::InputEvent::kCtrlKey); |
| event->set_shift_key(modifiers & system_window::InputEvent::kShiftKey); |
| event->set_alt_key(modifiers & system_window::InputEvent::kAltKey); |
| event->set_meta_key(modifiers & system_window::InputEvent::kMetaKey); |
| } |
| |
| void UpdateMouseEventInitButton(int key_code, MouseEventInit* event) { |
| // The value of the button attribute MUST be as follows: |
| // https://www.w3.org/TR/uievents/#ref-for-dom-mouseevent-button-1 |
| if (key_code == kSbKeyMouse1) { |
| // 0 MUST indicate the primary button of the device (in general, the left |
| // button or the only button on single-button devices, used to activate a |
| // user interface control or select text) or the un-initialized value. |
| event->set_button(0); |
| } else if (key_code == kSbKeyMouse2) { |
| // 1 MUST indicate the auxiliary button (in general, the middle button, |
| // often combined with a mouse wheel). |
| event->set_button(1); |
| } else if (key_code == kSbKeyMouse3) { |
| // 2 MUST indicate the secondary button (in general, the right button, often |
| // used to display a context menu). |
| event->set_button(2); |
| } |
| } |
| |
| void UpdateMouseEventInitButtons(uint32 modifiers, MouseEventInit* event) { |
| // The value of the buttons attribute MUST be as follows: |
| // https://www.w3.org/TR/uievents/#ref-for-dom-mouseevent-buttons-3 |
| |
| // 0 MUST indicate no button is currently active. |
| uint16 buttons = 0; |
| if (modifiers & system_window::InputEvent::kLeftButton) { |
| // 1 MUST indicate the primary button of the device (in general, the left |
| // button or the only button on single-button devices, used to activate a |
| // user interface control or select text). |
| buttons |= 1; |
| } |
| if (modifiers & system_window::InputEvent::kRightButton) { |
| // 2 MUST indicate the secondary button (in general, the right button, often |
| // used to display a context menu), if present. |
| buttons |= 2; |
| } |
| if (modifiers & system_window::InputEvent::kMiddleButton) { |
| // 4 MUST indicate the auxiliary button (in general, the middle button, |
| // often combined with a mouse wheel). |
| buttons |= 4; |
| } |
| event->set_buttons(buttons); |
| } |
| |
| void UpdateMouseEventInit(const system_window::InputEvent* input_event, |
| dom::MouseEventInit* mouse_event) { |
| UpdateEventModifierInit(input_event, mouse_event); |
| UpdateMouseEventInitButton(input_event->key_code(), mouse_event); |
| UpdateMouseEventInitButtons(input_event->modifiers(), mouse_event); |
| |
| mouse_event->set_screen_x(static_cast<float>(input_event->position().x())); |
| mouse_event->set_screen_y(static_cast<float>(input_event->position().y())); |
| mouse_event->set_client_x(static_cast<float>(input_event->position().x())); |
| mouse_event->set_client_y(static_cast<float>(input_event->position().y())); |
| } |
| |
| // Returns the value or the default_value when value is NaN. |
| float value_or(float value, float default_value) { |
| return std::isnan(value) ? default_value : value; |
| } |
| |
| } // namespace |
| |
| void InputDeviceManagerDesktop::HandleKeyboardEvent( |
| bool is_key_down, const system_window::InputEvent* input_event, |
| int key_code) { |
| base::Token type = |
| is_key_down ? base::Tokens::keydown() : base::Tokens::keyup(); |
| dom::KeyboardEvent::KeyLocationCode location = |
| dom::KeyboardEvent::KeyCodeToKeyLocation(key_code); |
| dom::KeyboardEventInit keyboard_event; |
| UpdateEventModifierInit(input_event, &keyboard_event); |
| keyboard_event.set_location(location); |
| keyboard_event.set_repeat(input_event->is_repeat()); |
| keyboard_event.set_char_code(key_code); |
| keyboard_event.set_key_code(key_code); |
| keypress_generator_filter_.HandleKeyboardEvent(type, keyboard_event); |
| } |
| |
| void InputDeviceManagerDesktop::HandlePointerEvent( |
| base::Token type, const system_window::InputEvent* input_event) { |
| dom::PointerEventInit pointer_event; |
| UpdateMouseEventInit(input_event, &pointer_event); |
| |
| pointer_event.set_pointer_id(input_event->device_id()); |
| #if SB_API_VERSION >= SB_POINTER_INPUT_API_VERSION |
| pointer_event.set_width(value_or(input_event->size().x(), 0.0f)); |
| pointer_event.set_height(value_or(input_event->size().y(), 0.0f)); |
| pointer_event.set_pressure(value_or(input_event->pressure(), |
| input_event->modifiers() ? 0.5f : 0.0f)); |
| pointer_event.set_tilt_x( |
| value_or(static_cast<float>(input_event->tilt().x()), 0.0f)); |
| pointer_event.set_tilt_y( |
| value_or(static_cast<float>(input_event->tilt().y()), 0.0f)); |
| #endif |
| pointer_event.set_is_primary(true); |
| pointer_event_callback_.Run(type, pointer_event); |
| } |
| |
| void InputDeviceManagerDesktop::HandleWheelEvent( |
| const system_window::InputEvent* input_event) { |
| base::Token type = base::Tokens::wheel(); |
| dom::WheelEventInit wheel_event; |
| UpdateMouseEventInit(input_event, &wheel_event); |
| |
| wheel_event.set_delta_x(input_event->delta().x()); |
| wheel_event.set_delta_y(input_event->delta().y()); |
| wheel_event.set_delta_z(0); |
| wheel_event.set_delta_mode(dom::WheelEvent::kDomDeltaLine); |
| |
| wheel_event_callback_.Run(type, wheel_event); |
| } |
| |
| void InputDeviceManagerDesktop::HandleInputEvent(const base::Event* event) { |
| // The user has pressed a key on the keyboard. |
| const system_window::InputEvent* input_event = |
| base::polymorphic_downcast<const system_window::InputEvent*>(event); |
| SB_DCHECK(input_event); |
| int key_code = input_event->key_code(); |
| |
| switch (input_event->type()) { |
| case system_window::InputEvent::kKeyDown: |
| HandleKeyboardEvent(true, input_event, key_code); |
| break; |
| case system_window::InputEvent::kKeyUp: |
| HandleKeyboardEvent(false, input_event, key_code); |
| break; |
| case system_window::InputEvent::kPointerDown: |
| case system_window::InputEvent::kPointerUp: { |
| if ((kSbKeyBrowserBack == key_code) || |
| (kSbKeyBrowserForward == key_code) || (kSbKeyMouse2 == key_code)) { |
| // For consistency with behavior on current browsers, the 'Forward' and |
| // 'Back' mouse buttons are reported as keypress input for the 'Forward' |
| // and 'Back' navigation keys, not as Pointer Events for the X1 and X2 |
| // buttons. |
| |
| if (kSbKeyMouse2 == key_code) { |
| // Temporarily Report middle button presses as the enter key. |
| key_code = kSbKeyReturn; |
| } |
| HandleKeyboardEvent( |
| input_event->type() == system_window::InputEvent::kPointerDown, |
| input_event, key_code); |
| } else { |
| base::Token type = |
| input_event->type() == system_window::InputEvent::kPointerDown |
| ? base::Tokens::pointerdown() |
| : base::Tokens::pointerup(); |
| HandlePointerEvent(type, input_event); |
| } |
| break; |
| } |
| case system_window::InputEvent::kPointerMove: { |
| HandlePointerEvent(base::Tokens::pointermove(), input_event); |
| break; |
| } |
| case system_window::InputEvent::kWheel: { |
| HandleWheelEvent(input_event); |
| } |
| default: |
| break; |
| } |
| |
| InputPollerImpl* input_poller_impl = |
| static_cast<InputPollerImpl*>(input_poller_.get()); |
| input_poller_impl->UpdateInputEvent(input_event); |
| } |
| |
| } // namespace input |
| } // namespace cobalt |