content/browser/renderer_host/input/web_input_event_util.cc

   1 // Copyright 2013 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 // MSVC++ requires this to be set before any other includes to get M_PI.
   6 #define _USE_MATH_DEFINES
   7
   8 #include "content/browser/renderer_host/input/web_input_event_util.h"
   9
  10 #include <cmath>
  11
  12 #include "base/strings/string_util.h"
  13 #include "content/common/input/web_touch_event_traits.h"
  14 #include "ui/events/blink/blink_event_util.h"
  15 #include "ui/events/event_constants.h"
  16 #include "ui/events/gesture_detection/gesture_event_data.h"
  17 #include "ui/events/gesture_detection/motion_event.h"
  18 #include "ui/gfx/geometry/safe_integer_conversions.h"
  19
  20 using blink::WebGestureEvent;
  21 using blink::WebInputEvent;
  22 using blink::WebTouchEvent;
  23 using blink::WebTouchPoint;
  24 using ui::MotionEvent;
  25
  26 namespace {
  27
  28 const char* GetKeyIdentifier(ui::KeyboardCode key_code) {
  29   switch (key_code) {
  30     case ui::VKEY_MENU:
  31       return "Alt";
  32     case ui::VKEY_CONTROL:
  33       return "Control";
  34     case ui::VKEY_SHIFT:
  35       return "Shift";
  36     case ui::VKEY_CAPITAL:
  37       return "CapsLock";
  38     case ui::VKEY_LWIN:
  39     case ui::VKEY_RWIN:
  40       return "Win";
  41     case ui::VKEY_CLEAR:
  42       return "Clear";
  43     case ui::VKEY_DOWN:
  44       return "Down";
  45     case ui::VKEY_END:
  46       return "End";
  47     case ui::VKEY_RETURN:
  48       return "Enter";
  49     case ui::VKEY_EXECUTE:
  50       return "Execute";
  51     case ui::VKEY_F1:
  52       return "F1";
  53     case ui::VKEY_F2:
  54       return "F2";
  55     case ui::VKEY_F3:
  56       return "F3";
  57     case ui::VKEY_F4:
  58       return "F4";
  59     case ui::VKEY_F5:
  60       return "F5";
  61     case ui::VKEY_F6:
  62       return "F6";
  63     case ui::VKEY_F7:
  64       return "F7";
  65     case ui::VKEY_F8:
  66       return "F8";
  67     case ui::VKEY_F9:
  68       return "F9";
  69     case ui::VKEY_F10:
  70       return "F10";
  71     case ui::VKEY_F11:
  72       return "F11";
  73     case ui::VKEY_F12:
  74       return "F12";
  75     case ui::VKEY_F13:
  76       return "F13";
  77     case ui::VKEY_F14:
  78       return "F14";
  79     case ui::VKEY_F15:
  80       return "F15";
  81     case ui::VKEY_F16:
  82       return "F16";
  83     case ui::VKEY_F17:
  84       return "F17";
  85     case ui::VKEY_F18:
  86       return "F18";
  87     case ui::VKEY_F19:
  88       return "F19";
  89     case ui::VKEY_F20:
  90       return "F20";
  91     case ui::VKEY_F21:
  92       return "F21";
  93     case ui::VKEY_F22:
  94       return "F22";
  95     case ui::VKEY_F23:
  96       return "F23";
  97     case ui::VKEY_F24:
  98       return "F24";
  99     case ui::VKEY_HELP:
 100       return "Help";
 101     case ui::VKEY_HOME:
 102       return "Home";
 103     case ui::VKEY_INSERT:
 104       return "Insert";
 105     case ui::VKEY_LEFT:
 106       return "Left";
 107     case ui::VKEY_NEXT:
 108       return "PageDown";
 109     case ui::VKEY_PRIOR:
 110       return "PageUp";
 111     case ui::VKEY_PAUSE:
 112       return "Pause";
 113     case ui::VKEY_SNAPSHOT:
 114       return "PrintScreen";
 115     case ui::VKEY_RIGHT:
 116       return "Right";
 117     case ui::VKEY_SCROLL:
 118       return "Scroll";
 119     case ui::VKEY_SELECT:
 120       return "Select";
 121     case ui::VKEY_UP:
 122       return "Up";
 123     case ui::VKEY_DELETE:
 124       return "U+007F";  // Standard says that DEL becomes U+007F.
 125     case ui::VKEY_MEDIA_NEXT_TRACK:
 126       return "MediaNextTrack";
 127     case ui::VKEY_MEDIA_PREV_TRACK:
 128       return "MediaPreviousTrack";
 129     case ui::VKEY_MEDIA_STOP:
 130       return "MediaStop";
 131     case ui::VKEY_MEDIA_PLAY_PAUSE:
 132       return "MediaPlayPause";
 133     case ui::VKEY_VOLUME_MUTE:
 134       return "VolumeMute";
 135     case ui::VKEY_VOLUME_DOWN:
 136       return "VolumeDown";
 137     case ui::VKEY_VOLUME_UP:
 138       return "VolumeUp";
 139     default:
 140       return NULL;
 141   };
 142 }
 143
 144 }  // namespace
 145
 146 namespace content {
 147
 148 void UpdateWindowsKeyCodeAndKeyIdentifier(blink::WebKeyboardEvent* event,
 149                                           ui::KeyboardCode windows_key_code) {
 150   event->windowsKeyCode = windows_key_code;
 151
 152   const char* id = GetKeyIdentifier(windows_key_code);
 153   if (id) {
 154     base::strlcpy(event->keyIdentifier, id, sizeof(event->keyIdentifier) - 1);
 155   } else {
 156     base::snprintf(
 157         event->keyIdentifier,
 158         sizeof(event->keyIdentifier),
 159         "U+%04X",
 160         base::ToUpperASCII(static_cast<base::char16>(windows_key_code)));
 161   }
 162 }
 163
 164 int WebEventModifiersToEventFlags(int modifiers) {
 165   int flags = 0;
 166
 167   if (modifiers & blink::WebInputEvent::ShiftKey)
 168     flags |= ui::EF_SHIFT_DOWN;
 169   if (modifiers & blink::WebInputEvent::ControlKey)
 170     flags |= ui::EF_CONTROL_DOWN;
 171   if (modifiers & blink::WebInputEvent::AltKey)
 172     flags |= ui::EF_ALT_DOWN;
 173   if (modifiers & blink::WebInputEvent::MetaKey)
 174     flags |= ui::EF_COMMAND_DOWN;
 175
 176   if (modifiers & blink::WebInputEvent::LeftButtonDown)
 177     flags |= ui::EF_LEFT_MOUSE_BUTTON;
 178   if (modifiers & blink::WebInputEvent::MiddleButtonDown)
 179     flags |= ui::EF_MIDDLE_MOUSE_BUTTON;
 180   if (modifiers & blink::WebInputEvent::RightButtonDown)
 181     flags |= ui::EF_RIGHT_MOUSE_BUTTON;
 182   if (modifiers & blink::WebInputEvent::CapsLockOn)
 183     flags |= ui::EF_CAPS_LOCK_DOWN;
 184   if (modifiers & blink::WebInputEvent::IsAutoRepeat)
 185     flags |= ui::EF_IS_REPEAT;
 186
 187   return flags;
 188 }
 189
 190 }  // namespace content