| // Copyright (c) 2012 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 "ui/events/event_utils.h" |
| |
| #include <vector> |
| |
| #include "ui/events/event.h" |
| #include "ui/gfx/display.h" |
| #include "ui/gfx/screen.h" |
| |
| namespace ui { |
| |
| namespace { |
| int g_custom_event_types = ET_LAST; |
| } // namespace |
| |
| scoped_ptr<Event> EventFromNative(const base::NativeEvent& native_event) { |
| scoped_ptr<Event> event; |
| EventType type = EventTypeFromNative(native_event); |
| switch(type) { |
| case ET_KEY_PRESSED: |
| case ET_KEY_RELEASED: |
| event.reset(new KeyEvent(native_event)); |
| break; |
| |
| case ET_TRANSLATED_KEY_PRESS: |
| case ET_TRANSLATED_KEY_RELEASE: |
| // These should not be generated by native events. |
| NOTREACHED(); |
| break; |
| |
| case ET_MOUSE_PRESSED: |
| case ET_MOUSE_DRAGGED: |
| case ET_MOUSE_RELEASED: |
| case ET_MOUSE_MOVED: |
| case ET_MOUSE_ENTERED: |
| case ET_MOUSE_EXITED: |
| event.reset(new MouseEvent(native_event)); |
| break; |
| |
| case ET_MOUSEWHEEL: |
| event.reset(new MouseWheelEvent(native_event)); |
| break; |
| |
| case ET_SCROLL_FLING_START: |
| case ET_SCROLL_FLING_CANCEL: |
| case ET_SCROLL: |
| event.reset(new ScrollEvent(native_event)); |
| break; |
| |
| case ET_TOUCH_RELEASED: |
| case ET_TOUCH_PRESSED: |
| case ET_TOUCH_MOVED: |
| case ET_TOUCH_CANCELLED: |
| event.reset(new TouchEvent(native_event)); |
| break; |
| |
| default: |
| break; |
| } |
| return event.Pass(); |
| } |
| |
| // From third_party/WebKit/Source/web/gtk/WebInputEventFactory.cpp: |
| base::char16 GetControlCharacterForKeycode(int windows_key_code, bool shift) { |
| if (windows_key_code >= ui::VKEY_A && |
| windows_key_code <= ui::VKEY_Z) { |
| // ctrl-A ~ ctrl-Z map to \x01 ~ \x1A |
| return windows_key_code - ui::VKEY_A + 1; |
| } |
| if (shift) { |
| // following graphics chars require shift key to input. |
| switch (windows_key_code) { |
| // ctrl-@ maps to \x00 (Null byte) |
| case ui::VKEY_2: |
| return 0; |
| // ctrl-^ maps to \x1E (Record separator, Information separator two) |
| case ui::VKEY_6: |
| return 0x1E; |
| // ctrl-_ maps to \x1F (Unit separator, Information separator one) |
| case ui::VKEY_OEM_MINUS: |
| return 0x1F; |
| // Returns 0 for all other keys to avoid inputting unexpected chars. |
| default: |
| break; |
| } |
| } else { |
| switch (windows_key_code) { |
| // ctrl-[ maps to \x1B (Escape) |
| case ui::VKEY_OEM_4: |
| return 0x1B; |
| // ctrl-\ maps to \x1C (File separator, Information separator four) |
| case ui::VKEY_OEM_5: |
| return 0x1C; |
| // ctrl-] maps to \x1D (Group separator, Information separator three) |
| case ui::VKEY_OEM_6: |
| return 0x1D; |
| // ctrl-Enter maps to \x0A (Line feed) |
| case ui::VKEY_RETURN: |
| return 0x0A; |
| // Returns 0 for all other keys to avoid inputting unexpected chars. |
| default: |
| break; |
| } |
| } |
| return 0; |
| } |
| |
| int RegisterCustomEventType() { |
| return ++g_custom_event_types; |
| } |
| |
| base::TimeDelta EventTimeForNow() { |
| return base::TimeDelta::FromInternalValue( |
| base::TimeTicks::Now().ToInternalValue()); |
| } |
| |
| bool ShouldDefaultToNaturalScroll() { |
| return GetInternalDisplayTouchSupport() == |
| gfx::Display::TOUCH_SUPPORT_AVAILABLE; |
| } |
| |
| gfx::Display::TouchSupport GetInternalDisplayTouchSupport() { |
| gfx::Screen* screen = gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_NATIVE); |
| // No screen in some unit tests. |
| if (!screen) |
| return gfx::Display::TOUCH_SUPPORT_UNKNOWN; |
| const std::vector<gfx::Display>& displays = screen->GetAllDisplays(); |
| for (std::vector<gfx::Display>::const_iterator it = displays.begin(); |
| it != displays.end(); ++it) { |
| if (it->IsInternal()) |
| return it->touch_support(); |
| } |
| return gfx::Display::TOUCH_SUPPORT_UNAVAILABLE; |
| } |
| |
| } // namespace ui |