| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "mojo/services/html_viewer/blink_input_events_type_converters.h" |
| |
| #include "base/time/time.h" |
| #include "third_party/WebKit/public/web/WebInputEvent.h" |
| #include "ui/events/event_constants.h" |
| |
| namespace mojo { |
| namespace { |
| |
| // Used for scrolling. This matches Firefox behavior. |
| const int kPixelsPerTick = 53; |
| |
| int EventFlagsToWebEventModifiers(int flags) { |
| int modifiers = 0; |
| |
| if (flags & ui::EF_SHIFT_DOWN) |
| modifiers |= blink::WebInputEvent::ShiftKey; |
| if (flags & ui::EF_CONTROL_DOWN) |
| modifiers |= blink::WebInputEvent::ControlKey; |
| if (flags & ui::EF_ALT_DOWN) |
| modifiers |= blink::WebInputEvent::AltKey; |
| // TODO(beng): MetaKey/META_MASK |
| if (flags & ui::EF_LEFT_MOUSE_BUTTON) |
| modifiers |= blink::WebInputEvent::LeftButtonDown; |
| if (flags & ui::EF_MIDDLE_MOUSE_BUTTON) |
| modifiers |= blink::WebInputEvent::MiddleButtonDown; |
| if (flags & ui::EF_RIGHT_MOUSE_BUTTON) |
| modifiers |= blink::WebInputEvent::RightButtonDown; |
| if (flags & ui::EF_CAPS_LOCK_DOWN) |
| modifiers |= blink::WebInputEvent::CapsLockOn; |
| return modifiers; |
| } |
| |
| int EventFlagsToWebInputEventModifiers(int flags) { |
| return |
| (flags & ui::EF_SHIFT_DOWN ? blink::WebInputEvent::ShiftKey : 0) | |
| (flags & ui::EF_CONTROL_DOWN ? blink::WebInputEvent::ControlKey : 0) | |
| (flags & ui::EF_CAPS_LOCK_DOWN ? blink::WebInputEvent::CapsLockOn : 0) | |
| (flags & ui::EF_ALT_DOWN ? blink::WebInputEvent::AltKey : 0); |
| } |
| |
| // TODO(erg): This function is extremely hacky and should only be accepted |
| // since this is demo code which won't live very long. Actually calculating |
| // this accurately would require the native X11 event so we could get accurate |
| // key codes via XKeyEventToWindowsKeyCode() and ui::GetCharacterFromXEvent(). |
| // That option is closed to us, and thus, hack. |
| int32_t MakeHackyText(int32_t key_code, int flags) { |
| if (!(flags & ui::EF_SHIFT_DOWN) && key_code >= 'A' && key_code <= 'Z') |
| key_code = key_code + ('a' - 'A'); |
| |
| return key_code; |
| } |
| |
| int GetClickCount(int flags) { |
| if (flags & ui::EF_IS_TRIPLE_CLICK) |
| return 3; |
| else if (flags & ui::EF_IS_DOUBLE_CLICK) |
| return 2; |
| |
| return 1; |
| } |
| |
| } // namespace |
| |
| // static |
| scoped_ptr<blink::WebInputEvent> |
| TypeConverter<EventPtr, scoped_ptr<blink::WebInputEvent> >::ConvertTo( |
| const EventPtr& event) { |
| |
| if (event->action == ui::ET_MOUSE_PRESSED || |
| event->action == ui::ET_MOUSE_RELEASED || |
| event->action == ui::ET_MOUSE_ENTERED || |
| event->action == ui::ET_MOUSE_EXITED || |
| event->action == ui::ET_MOUSE_MOVED || |
| event->action == ui::ET_MOUSE_DRAGGED) { |
| scoped_ptr<blink::WebMouseEvent> web_event(new blink::WebMouseEvent); |
| web_event->x = event->location->x; |
| web_event->y = event->location->y; |
| |
| web_event->modifiers = EventFlagsToWebEventModifiers(event->flags); |
| web_event->timeStampSeconds = |
| base::TimeDelta::FromInternalValue(event->time_stamp).InSecondsF(); |
| |
| web_event->button = blink::WebMouseEvent::ButtonNone; |
| if (event->flags & ui::EF_LEFT_MOUSE_BUTTON) |
| web_event->button = blink::WebMouseEvent::ButtonLeft; |
| if (event->flags & ui::EF_MIDDLE_MOUSE_BUTTON) |
| web_event->button = blink::WebMouseEvent::ButtonMiddle; |
| if (event->flags & ui::EF_RIGHT_MOUSE_BUTTON) |
| web_event->button = blink::WebMouseEvent::ButtonRight; |
| |
| switch (event->action) { |
| case ui::ET_MOUSE_PRESSED: |
| web_event->type = blink::WebInputEvent::MouseDown; |
| web_event->clickCount = GetClickCount(event->flags); |
| break; |
| case ui::ET_MOUSE_RELEASED: |
| web_event->type = blink::WebInputEvent::MouseUp; |
| web_event->clickCount = GetClickCount(event->flags); |
| break; |
| case ui::ET_MOUSE_ENTERED: |
| case ui::ET_MOUSE_EXITED: |
| case ui::ET_MOUSE_MOVED: |
| case ui::ET_MOUSE_DRAGGED: |
| web_event->type = blink::WebInputEvent::MouseMove; |
| break; |
| default: |
| NOTIMPLEMENTED() << "Received unexpected event: " << event->action; |
| break; |
| } |
| |
| return web_event.PassAs<blink::WebInputEvent>(); |
| } else if ((event->action == ui::ET_KEY_PRESSED || |
| event->action == ui::ET_KEY_RELEASED) && |
| event->key_data) { |
| scoped_ptr<blink::WebKeyboardEvent> web_event(new blink::WebKeyboardEvent); |
| |
| // TODO(erg): This derivation of is_char is a bad hack, along with our key |
| // code and text calculations. Normally, key code calculations need the |
| // gfx::NativeEvent, which we don't have access to here. Likewise, the |
| // calculation of the |text| is overly simplified for similar |
| // reasons. (Contrast with web_input_event_aurax11.cc in content/.) |
| bool is_char = |
| event->key_data->is_char || |
| (event->key_data->key_code >= 32 && event->key_data->key_code < 127); |
| |
| switch (event->action) { |
| case ui::ET_KEY_PRESSED: |
| web_event->type = is_char ? blink::WebInputEvent::Char : |
| blink::WebInputEvent::RawKeyDown; |
| break; |
| case ui::ET_KEY_RELEASED: |
| web_event->type = blink::WebInputEvent::KeyUp; |
| break; |
| default: |
| NOTREACHED(); |
| } |
| |
| web_event->modifiers = EventFlagsToWebInputEventModifiers(event->flags); |
| web_event->timeStampSeconds = |
| base::TimeDelta::FromInternalValue(event->time_stamp).InSecondsF(); |
| |
| if (web_event->modifiers & blink::WebInputEvent::AltKey) |
| web_event->isSystemKey = true; |
| |
| web_event->windowsKeyCode = event->key_data->key_code; |
| web_event->nativeKeyCode = event->key_data->key_code; |
| web_event->text[0] = MakeHackyText(event->key_data->key_code, event->flags); |
| web_event->unmodifiedText[0] = event->key_data->key_code; |
| |
| web_event->setKeyIdentifierFromWindowsKeyCode(); |
| return web_event.PassAs<blink::WebInputEvent>(); |
| } else if (event->action == ui::ET_MOUSEWHEEL) { |
| scoped_ptr<blink::WebMouseWheelEvent> web_event( |
| new blink::WebMouseWheelEvent); |
| web_event->type = blink::WebInputEvent::MouseWheel; |
| web_event->button = blink::WebMouseEvent::ButtonNone; |
| web_event->modifiers = EventFlagsToWebEventModifiers(event->flags); |
| web_event->timeStampSeconds = |
| base::TimeDelta::FromInternalValue(event->time_stamp).InSecondsF(); |
| |
| web_event->x = event->location->x; |
| web_event->y = event->location->y; |
| |
| if ((event->flags & ui::EF_SHIFT_DOWN) != 0 && |
| event->wheel_data->x_offset == 0) { |
| web_event->deltaX = event->wheel_data->y_offset; |
| web_event->deltaY = 0; |
| } else { |
| web_event->deltaX = event->wheel_data->x_offset; |
| web_event->deltaY = event->wheel_data->y_offset; |
| } |
| |
| web_event->wheelTicksX = web_event->deltaX / kPixelsPerTick; |
| web_event->wheelTicksY = web_event->deltaY / kPixelsPerTick; |
| |
| return web_event.PassAs<blink::WebInputEvent>(); |
| } |
| |
| return scoped_ptr<blink::WebInputEvent>(); |
| } |
| |
| } // namespace mojo |