Rid the world of the last of views::Event types: TouchEvent, GestureEvent, MouseWheelEvent, ScrollE…

ui/views/events/event.h

-
-// 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.
-
-#ifndef UI_VIEWS_EVENTS_EVENT_H_
-#define UI_VIEWS_EVENTS_EVENT_H_
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "base/logging.h"
-#include "base/time.h"
-#include "ui/base/event.h"
-#include "ui/base/events.h"
-#include "ui/base/gestures/gesture_types.h"
-#include "ui/base/keycodes/keyboard_codes.h"
-#include "ui/gfx/point.h"
-#include "ui/views/views_export.h"
-
-namespace ui {
-class Event;
-class OSExchangeData;
-}
-
-
-namespace views {
-
-class View;
-
-namespace internal {
-class RootView;
-}
-
-////////////////////////////////////////////////////////////////////////////////
-//
-// TouchEvent class
-//
-// A touch event is generated by touch screen and advanced track
-// pad devices. There is a deliberate direct correspondence between
-// TouchEvent and PlatformTouchPoint.
-//
-////////////////////////////////////////////////////////////////////////////////
-class VIEWS_EXPORT TouchEvent : public ui::LocatedEvent {
- public:
-  explicit TouchEvent(const ui::NativeEvent& native_event);
-
-  // Create a new touch event.
-  TouchEvent(ui::EventType type,
-             int x,
-             int y,
-             int flags,
-             int touch_id,
-             float radius_x,
-             float radius_y,
-             float angle,
-             float force);
-
-  // Create a new TouchEvent which is identical to the provided model.
-  // If source / target views are provided, the model location will be converted
-  // from |source| coordinate system to |target| coordinate system.
-  TouchEvent(const TouchEvent& model, View* source, View* target);
-
-  virtual ~TouchEvent();
-
-  int identity() const { return touch_id_; }
-
-  float radius_x() const { return radius_x_; }
-  float radius_y() const { return radius_y_; }
-  float rotation_angle() const { return rotation_angle_; }
-  float force() const { return force_; }
-
- private:
-  // The identity (typically finger) of the touch starting at 0 and incrementing
-  // for each separable additional touch that the hardware can detect.
-  const int touch_id_;
-
-  // Radius of the X (major) axis of the touch ellipse. 1.0 if unknown.
-  const float radius_x_;
-
-  // Radius of the Y (minor) axis of the touch ellipse. 1.0 if unknown.
-  const float radius_y_;
-
-  // Angle of the major axis away from the X axis. Default 0.0.
-  const float rotation_angle_;
-
-  // Force (pressure) of the touch. Normalized to be [0, 1]. Default to be 0.0.
-  const float force_;
-
-  DISALLOW_COPY_AND_ASSIGN(TouchEvent);
-};
-
-class ScrollEvent;
-
-////////////////////////////////////////////////////////////////////////////////
-//
-// MouseWheelEvent class
-//
-// A MouseWheelEvent is used to propagate mouse wheel user events.
-// Note: e.GetOffset() > 0 means scroll up / left.
-//
-////////////////////////////////////////////////////////////////////////////////
-class VIEWS_EXPORT MouseWheelEvent : public ui::MouseEvent {
- public:
-  // See |offset| for details.
-  static const int kWheelDelta;
-
-  explicit MouseWheelEvent(const ui::NativeEvent& native_event);
-  explicit MouseWheelEvent(const ScrollEvent& scroll_event);
-
-  // The amount to scroll. This is in multiples of kWheelDelta.
-  int offset() const { return offset_; }
-
- private:
-  int offset_;
-
-  DISALLOW_COPY_AND_ASSIGN(MouseWheelEvent);
-};
-
-////////////////////////////////////////////////////////////////////////////////
-//
-// DropTargetEvent class
-//
-// A DropTargetEvent is sent to the view the mouse is over during a drag and
-// drop operation.
-//
-////////////////////////////////////////////////////////////////////////////////
-class VIEWS_EXPORT DropTargetEvent : public ui::LocatedEvent {
- public:
-  DropTargetEvent(const ui::OSExchangeData& data,
-                  int x,
-                  int y,
-                  int source_operations)
-      : LocatedEvent(
-            ui::ET_DROP_TARGET_EVENT, gfx::Point(x, y), gfx::Point(x, y), 0),
-        data_(data),
-        source_operations_(source_operations) {
-    // TODO(msw): Hook up key state flags for CTRL + drag and drop, etc.
-  }
-
-  const ui::OSExchangeData& data() const { return data_; }
-  int source_operations() const { return source_operations_; }
-
- private:
-  // Data associated with the drag/drop session.
-  const ui::OSExchangeData& data_;
-
-  // Bitmask of supported ui::DragDropTypes::DragOperation by the source.
-  int source_operations_;
-
-  DISALLOW_COPY_AND_ASSIGN(DropTargetEvent);
-};
-
-class VIEWS_EXPORT ScrollEvent : public ui::MouseEvent {
- public:
-  explicit ScrollEvent(const ui::NativeEvent& native_event);
-
-  float x_offset() const { return x_offset_; }
-  float y_offset() const { return y_offset_; }
-
- private:
-  float x_offset_;
-  float y_offset_;
-
-  DISALLOW_COPY_AND_ASSIGN(ScrollEvent);
-};
-
-////////////////////////////////////////////////////////////////////////////////
-// GestureEvent class
-//
-////////////////////////////////////////////////////////////////////////////////
-class VIEWS_EXPORT GestureEvent : public ui::LocatedEvent {
- public:
-  explicit GestureEvent(const ui::NativeEvent& native_event);
-
-  // Create a new GestureEvent which is identical to the provided model.
-  // If source / target views are provided, the model location will be converted
-  // from |source| coordinate system to |target| coordinate system.
-  GestureEvent(const GestureEvent& model, View* source, View* target);
-
-  virtual ~GestureEvent();
-
-  const ui::GestureEventDetails& details() const { return details_; }
-
- protected:
-  GestureEvent(ui::EventType type, int x, int y, int flags);
-
- private:
-  ui::GestureEventDetails details_;
-
-  DISALLOW_COPY_AND_ASSIGN(GestureEvent);
-};
-
-class VIEWS_EXPORT GestureEventForTest : public GestureEvent {
- public:
-  GestureEventForTest(ui::EventType type, int x, int y, int flags);
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(GestureEventForTest);
-};
-
-#if defined(OS_WIN)
-int GetModifiersFromKeyState();
-#endif
-
-}  // namespace views
-
-#endif  // UI_VIEWS_EVENTS_EVENT_H_