Refactors gesture conversion functions to ui/events/blink

ui/events/blink/blink_event_util.cc

-// Copyright 2013 The Chromium Authors. All rights reserved.
+// Copyright 2015 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.
 
 // MSVC++ requires this to be set before any other includes to get M_PI.
 #define _USE_MATH_DEFINES
 
-#include "content/browser/renderer_host/input/web_input_event_util.h"
+#include "ui/events/blink/blink_event_util.h"
 
 #include <cmath>
 
-#include "base/strings/string_util.h"
-#include "content/common/input/web_touch_event_traits.h"
+#include "base/time/time.h"
+#include "third_party/WebKit/public/web/WebInputEvent.h"
 #include "ui/events/event_constants.h"
 #include "ui/events/gesture_detection/gesture_event_data.h"
 #include "ui/events/gesture_detection/motion_event.h"
+#include "ui/events/gesture_event_details.h"
 #include "ui/gfx/geometry/safe_integer_conversions.h"
 
 using blink::WebGestureEvent;
 using blink::WebInputEvent;
 using blink::WebTouchEvent;
 using blink::WebTouchPoint;
-using ui::MotionEvent;
 
+namespace ui {
 namespace {
 
-const char* GetKeyIdentifier(ui::KeyboardCode key_code) {
-  switch (key_code) {
-    case ui::VKEY_MENU:
-      return "Alt";
-    case ui::VKEY_CONTROL:
-      return "Control";
-    case ui::VKEY_SHIFT:
-      return "Shift";
-    case ui::VKEY_CAPITAL:
-      return "CapsLock";
-    case ui::VKEY_LWIN:
-    case ui::VKEY_RWIN:
-      return "Win";
-    case ui::VKEY_CLEAR:
-      return "Clear";
-    case ui::VKEY_DOWN:
-      return "Down";
-    case ui::VKEY_END:
-      return "End";
-    case ui::VKEY_RETURN:
-      return "Enter";
-    case ui::VKEY_EXECUTE:
-      return "Execute";
-    case ui::VKEY_F1:
-      return "F1";
-    case ui::VKEY_F2:
-      return "F2";
-    case ui::VKEY_F3:
-      return "F3";
-    case ui::VKEY_F4:
-      return "F4";
-    case ui::VKEY_F5:
-      return "F5";
-    case ui::VKEY_F6:
-      return "F6";
-    case ui::VKEY_F7:
-      return "F7";
-    case ui::VKEY_F8:
-      return "F8";
-    case ui::VKEY_F9:
-      return "F9";
-    case ui::VKEY_F10:
-      return "F10";
-    case ui::VKEY_F11:
-      return "F11";
-    case ui::VKEY_F12:
-      return "F12";
-    case ui::VKEY_F13:
-      return "F13";
-    case ui::VKEY_F14:
-      return "F14";
-    case ui::VKEY_F15:
-      return "F15";
-    case ui::VKEY_F16:
-      return "F16";
-    case ui::VKEY_F17:
-      return "F17";
-    case ui::VKEY_F18:
-      return "F18";
-    case ui::VKEY_F19:
-      return "F19";
-    case ui::VKEY_F20:
-      return "F20";
-    case ui::VKEY_F21:
-      return "F21";
-    case ui::VKEY_F22:
-      return "F22";
-    case ui::VKEY_F23:
-      return "F23";
-    case ui::VKEY_F24:
-      return "F24";
-    case ui::VKEY_HELP:
-      return "Help";
-    case ui::VKEY_HOME:
-      return "Home";
-    case ui::VKEY_INSERT:
-      return "Insert";
-    case ui::VKEY_LEFT:
-      return "Left";
-    case ui::VKEY_NEXT:
-      return "PageDown";
-    case ui::VKEY_PRIOR:
-      return "PageUp";
-    case ui::VKEY_PAUSE:
-      return "Pause";
-    case ui::VKEY_SNAPSHOT:
-      return "PrintScreen";
-    case ui::VKEY_RIGHT:
-      return "Right";
-    case ui::VKEY_SCROLL:
-      return "Scroll";
-    case ui::VKEY_SELECT:
-      return "Select";
-    case ui::VKEY_UP:
-      return "Up";
-    case ui::VKEY_DELETE:
-      return "U+007F";  // Standard says that DEL becomes U+007F.
-    case ui::VKEY_MEDIA_NEXT_TRACK:
-      return "MediaNextTrack";
-    case ui::VKEY_MEDIA_PREV_TRACK:
-      return "MediaPreviousTrack";
-    case ui::VKEY_MEDIA_STOP:
-      return "MediaStop";
-    case ui::VKEY_MEDIA_PLAY_PAUSE:
-      return "MediaPlayPause";
-    case ui::VKEY_VOLUME_MUTE:
-      return "VolumeMute";
-    case ui::VKEY_VOLUME_DOWN:
-      return "VolumeDown";
-    case ui::VKEY_VOLUME_UP:
-      return "VolumeUp";
-    default:
-      return NULL;
-  };
-}
-
 WebInputEvent::Type ToWebInputEventType(MotionEvent::Action action) {
   switch (action) {
     case MotionEvent::ACTION_DOWN:
       return WebInputEvent::TouchStart;
     case MotionEvent::ACTION_MOVE:
       return WebInputEvent::TouchMove;
     case MotionEvent::ACTION_UP:
       return WebInputEvent::TouchEnd;
     case MotionEvent::ACTION_CANCEL:
       return WebInputEvent::TouchCancel;
@@ skipping 82 matching lines @@
     touch.rotationAngle = orientation_deg + 90;
   }
 
   touch.force = event.GetPressure(pointer_index);
 
   return touch;
 }
 
 }  // namespace
 
-namespace content {
-
-void UpdateWindowsKeyCodeAndKeyIdentifier(blink::WebKeyboardEvent* event,
-                                          ui::KeyboardCode windows_key_code) {
-  event->windowsKeyCode = windows_key_code;
-
-  const char* id = GetKeyIdentifier(windows_key_code);
-  if (id) {
-    base::strlcpy(event->keyIdentifier, id, sizeof(event->keyIdentifier) - 1);
-  } else {
-    base::snprintf(event->keyIdentifier,
-                   sizeof(event->keyIdentifier),
-                   "U+%04X",
-                   base::ToUpperASCII(static_cast<int>(windows_key_code)));
-  }
-}
-
 blink::WebTouchEvent CreateWebTouchEventFromMotionEvent(
-    const ui::MotionEvent& event,
+    const MotionEvent& event,
     bool may_cause_scrolling) {
   static_assert(static_cast<int>(MotionEvent::MAX_TOUCH_POINT_COUNT) ==
                     static_cast<int>(blink::WebTouchEvent::touchesLengthCap),
                 "inconsistent maximum number of active touch points");
 
   blink::WebTouchEvent result;
 
-  WebTouchEventTraits::ResetType(
-      ToWebInputEventType(event.GetAction()),
+  result.type = ToWebInputEventType(event.GetAction());
+  result.cancelable = (result.type != WebInputEvent::TouchCancel);
+  result.timeStampSeconds =
       (event.GetEventTime() - base::TimeTicks()).InSecondsF(),
-      &result);
   result.causesScrollingIfUncanceled = may_cause_scrolling;
-
   result.modifiers = EventFlagsToWebEventModifiers(event.GetFlags());
   result.touchesLength =
       std::min(event.GetPointerCount(),
                static_cast<size_t>(WebTouchEvent::touchesLengthCap));
   DCHECK_GT(result.touchesLength, 0U);
 
   for (size_t i = 0; i < result.touchesLength; ++i)
     result.touches[i] = CreateWebTouchPoint(event, i);
 
   return result;
 }
 
-WebGestureEvent CreateWebGestureEvent(const ui::GestureEventDetails& details,
+int EventFlagsToWebEventModifiers(int flags) {
+  int modifiers = 0;
+
+  if (flags & EF_SHIFT_DOWN)
+    modifiers |= blink::WebInputEvent::ShiftKey;
+  if (flags & EF_CONTROL_DOWN)
+    modifiers |= blink::WebInputEvent::ControlKey;
+  if (flags & EF_ALT_DOWN)
+    modifiers |= blink::WebInputEvent::AltKey;
+  if (flags & EF_COMMAND_DOWN)
+    modifiers |= blink::WebInputEvent::MetaKey;
+
+  if (flags & EF_LEFT_MOUSE_BUTTON)
+    modifiers |= blink::WebInputEvent::LeftButtonDown;
+  if (flags & EF_MIDDLE_MOUSE_BUTTON)
+    modifiers |= blink::WebInputEvent::MiddleButtonDown;
+  if (flags & EF_RIGHT_MOUSE_BUTTON)
+    modifiers |= blink::WebInputEvent::RightButtonDown;
+  if (flags & EF_CAPS_LOCK_DOWN)
+    modifiers |= blink::WebInputEvent::CapsLockOn;
+  if (flags & EF_IS_REPEAT)
+    modifiers |= blink::WebInputEvent::IsAutoRepeat;
+  if (flags & EF_NUMPAD_KEY)
+    modifiers |= blink::WebInputEvent::IsKeyPad;
+
+  return modifiers;
+}
+
+WebGestureEvent CreateWebGestureEvent(const GestureEventDetails& details,
                                       base::TimeDelta timestamp,
                                       const gfx::PointF& location,
                                       const gfx::PointF& raw_location,
                                       int flags) {
   WebGestureEvent gesture;
   gesture.timeStampSeconds = timestamp.InSecondsF();
   gesture.x = gfx::ToFlooredInt(location.x());
   gesture.y = gfx::ToFlooredInt(location.y());
   gesture.globalX = gfx::ToFlooredInt(raw_location.x());
   gesture.globalY = gfx::ToFlooredInt(raw_location.y());
   gesture.modifiers = EventFlagsToWebEventModifiers(flags);
   gesture.sourceDevice = blink::WebGestureDeviceTouchscreen;
 
   switch (details.type()) {
-    case ui::ET_GESTURE_SHOW_PRESS:
+    case ET_GESTURE_SHOW_PRESS:
       gesture.type = WebInputEvent::GestureShowPress;
       gesture.data.showPress.width = details.bounding_box_f().width();
       gesture.data.showPress.height = details.bounding_box_f().height();
       break;
-    case ui::ET_GESTURE_DOUBLE_TAP:
+    case ET_GESTURE_DOUBLE_TAP:
       gesture.type = WebInputEvent::GestureDoubleTap;
       DCHECK_EQ(1, details.tap_count());
       gesture.data.tap.tapCount = details.tap_count();
       gesture.data.tap.width = details.bounding_box_f().width();
       gesture.data.tap.height = details.bounding_box_f().height();
       break;
-    case ui::ET_GESTURE_TAP:
+    case ET_GESTURE_TAP:
       gesture.type = WebInputEvent::GestureTap;
       DCHECK_GE(details.tap_count(), 1);
       gesture.data.tap.tapCount = details.tap_count();
       gesture.data.tap.width = details.bounding_box_f().width();
       gesture.data.tap.height = details.bounding_box_f().height();
       break;
-    case ui::ET_GESTURE_TAP_UNCONFIRMED:
+    case ET_GESTURE_TAP_UNCONFIRMED:
       gesture.type = WebInputEvent::GestureTapUnconfirmed;
       DCHECK_EQ(1, details.tap_count());
       gesture.data.tap.tapCount = details.tap_count();
       gesture.data.tap.width = details.bounding_box_f().width();
       gesture.data.tap.height = details.bounding_box_f().height();
       break;
-    case ui::ET_GESTURE_LONG_PRESS:
+    case ET_GESTURE_LONG_PRESS:
       gesture.type = WebInputEvent::GestureLongPress;
       gesture.data.longPress.width = details.bounding_box_f().width();
       gesture.data.longPress.height = details.bounding_box_f().height();
       break;
-    case ui::ET_GESTURE_LONG_TAP:
+    case ET_GESTURE_LONG_TAP:
       gesture.type = WebInputEvent::GestureLongTap;
       gesture.data.longPress.width = details.bounding_box_f().width();
       gesture.data.longPress.height = details.bounding_box_f().height();
       break;
-    case ui::ET_GESTURE_TWO_FINGER_TAP:
+    case ET_GESTURE_TWO_FINGER_TAP:
       gesture.type = blink::WebInputEvent::GestureTwoFingerTap;
       gesture.data.twoFingerTap.firstFingerWidth = details.first_finger_width();
       gesture.data.twoFingerTap.firstFingerHeight =
           details.first_finger_height();
       break;
-    case ui::ET_GESTURE_SCROLL_BEGIN:
+    case ET_GESTURE_SCROLL_BEGIN:
       gesture.type = WebInputEvent::GestureScrollBegin;
       gesture.data.scrollBegin.deltaXHint = details.scroll_x_hint();
       gesture.data.scrollBegin.deltaYHint = details.scroll_y_hint();
       break;
-    case ui::ET_GESTURE_SCROLL_UPDATE:
+    case ET_GESTURE_SCROLL_UPDATE:
       gesture.type = WebInputEvent::GestureScrollUpdate;
       gesture.data.scrollUpdate.deltaX = details.scroll_x();
       gesture.data.scrollUpdate.deltaY = details.scroll_y();
       gesture.data.scrollUpdate.previousUpdateInSequencePrevented =
           details.previous_scroll_update_in_sequence_prevented();
       break;
-    case ui::ET_GESTURE_SCROLL_END:
+    case ET_GESTURE_SCROLL_END:
       gesture.type = WebInputEvent::GestureScrollEnd;
       break;
-    case ui::ET_SCROLL_FLING_START:
+    case ET_SCROLL_FLING_START:
       gesture.type = WebInputEvent::GestureFlingStart;
       gesture.data.flingStart.velocityX = details.velocity_x();
       gesture.data.flingStart.velocityY = details.velocity_y();
       break;
-    case ui::ET_SCROLL_FLING_CANCEL:
+    case ET_SCROLL_FLING_CANCEL:
       gesture.type = WebInputEvent::GestureFlingCancel;
       break;
-    case ui::ET_GESTURE_PINCH_BEGIN:
+    case ET_GESTURE_PINCH_BEGIN:
       gesture.type = WebInputEvent::GesturePinchBegin;
       break;
-    case ui::ET_GESTURE_PINCH_UPDATE:
+    case ET_GESTURE_PINCH_UPDATE:
       gesture.type = WebInputEvent::GesturePinchUpdate;
       gesture.data.pinchUpdate.scale = details.scale();
       break;
-    case ui::ET_GESTURE_PINCH_END:
+    case ET_GESTURE_PINCH_END:
       gesture.type = WebInputEvent::GesturePinchEnd;
       break;
-    case ui::ET_GESTURE_TAP_CANCEL:
+    case ET_GESTURE_TAP_CANCEL:
       gesture.type = WebInputEvent::GestureTapCancel;
       break;
-    case ui::ET_GESTURE_TAP_DOWN:
+    case ET_GESTURE_TAP_DOWN:
       gesture.type = WebInputEvent::GestureTapDown;
       gesture.data.tapDown.width = details.bounding_box_f().width();
       gesture.data.tapDown.height = details.bounding_box_f().height();
       break;
-    case ui::ET_GESTURE_BEGIN:
-    case ui::ET_GESTURE_END:
-    case ui::ET_GESTURE_SWIPE:
+    case ET_GESTURE_BEGIN:
+    case ET_GESTURE_END:
+    case ET_GESTURE_SWIPE:
       // The caller is responsible for discarding these gestures appropriately.
       gesture.type = WebInputEvent::Undefined;
       break;
     default:
-      NOTREACHED() << "ui::EventType provided wasn't a valid gesture event: "
+      NOTREACHED() << "EventType provided wasn't a valid gesture event: "
                    << details.type();
   }
 
   return gesture;
 }
 
 WebGestureEvent CreateWebGestureEventFromGestureEventData(
-    const ui::GestureEventData& data) {
-  return CreateWebGestureEvent(data.details,
-                               data.time - base::TimeTicks(),
+    const GestureEventData& data) {
+  return CreateWebGestureEvent(data.details, data.time - base::TimeTicks(),
                                gfx::PointF(data.x, data.y),
-                               gfx::PointF(data.raw_x, data.raw_y),
-                               data.flags);
+                               gfx::PointF(data.raw_x, data.raw_y), data.flags);
 }
 
-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;
-  if (flags & ui::EF_COMMAND_DOWN)
-    modifiers |= blink::WebInputEvent::MetaKey;
-
-  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;
-  if (flags & ui::EF_IS_REPEAT)
-    modifiers |= blink::WebInputEvent::IsAutoRepeat;
-  if (flags & ui::EF_NUMPAD_KEY)
-    modifiers |= blink::WebInputEvent::IsKeyPad;
-
-  return modifiers;
-}
-
-int WebEventModifiersToEventFlags(int modifiers) {
-  int flags = 0;
-
-  if (modifiers & blink::WebInputEvent::ShiftKey)
-    flags |= ui::EF_SHIFT_DOWN;
-  if (modifiers & blink::WebInputEvent::ControlKey)
-    flags |= ui::EF_CONTROL_DOWN;
-  if (modifiers & blink::WebInputEvent::AltKey)
-    flags |= ui::EF_ALT_DOWN;
-  if (modifiers & blink::WebInputEvent::MetaKey)
-    flags |= ui::EF_COMMAND_DOWN;
-
-  if (modifiers & blink::WebInputEvent::LeftButtonDown)
-    flags |= ui::EF_LEFT_MOUSE_BUTTON;
-  if (modifiers & blink::WebInputEvent::MiddleButtonDown)
-    flags |= ui::EF_MIDDLE_MOUSE_BUTTON;
-  if (modifiers & blink::WebInputEvent::RightButtonDown)
-    flags |= ui::EF_RIGHT_MOUSE_BUTTON;
-  if (modifiers & blink::WebInputEvent::CapsLockOn)
-    flags |= ui::EF_CAPS_LOCK_DOWN;
-  if (modifiers & blink::WebInputEvent::IsAutoRepeat)
-    flags |= ui::EF_IS_REPEAT;
-  if (modifiers & blink::WebInputEvent::IsKeyPad)
-    flags |= ui::EF_NUMPAD_KEY;
-
-  return flags;
-}
-
-}  // namespace content
+}  // namespace ui