1 files changed, 171 insertions, 0 deletions
diff --git a/chromium/ui/events/gesture_event_details.h b/chromium/ui/events/gesture_event_details.h
new file mode 100644
index 00000000000..32db808bf72
--- /dev/null
+++ b/chromium/ui/events/gesture_event_details.h
@@ -0,0 +1,171 @@
+// 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.
+
+#ifndef UI_EVENTS_GESTURE_DETECTION_GESTURE_EVENT_DETAILS_H_
+#define UI_EVENTS_GESTURE_DETECTION_GESTURE_EVENT_DETAILS_H_
+
+#include "base/logging.h"
+#include "ui/events/event_constants.h"
+#include "ui/events/events_base_export.h"
+#include "ui/gfx/rect.h"
+#include "ui/gfx/rect_conversions.h"
+
+namespace ui {
+
+struct EVENTS_BASE_EXPORT GestureEventDetails {
+ public:
+  GestureEventDetails();
+  GestureEventDetails(EventType type, float delta_x, float delta_y);
+
+  EventType type() const { return type_; }
+
+  int touch_points() const { return touch_points_; }
+  void set_touch_points(int touch_points) {
+    DCHECK_GT(touch_points, 0);
+    touch_points_ = touch_points;
+  }
+
+  // TODO(tdresser): Return RectF. See crbug.com/337824.
+  const gfx::Rect bounding_box() const {
+    return ToEnclosingRect(bounding_box_);
+  }
+
+  const gfx::RectF& bounding_box_f() const {
+    return bounding_box_;
+  }
+
+  void set_bounding_box(const gfx::RectF& box) { bounding_box_ = box; }
+
+  float scroll_x_hint() const {
+    DCHECK_EQ(ET_GESTURE_SCROLL_BEGIN, type_);
+    return data.scroll_begin.x_hint;
+  }
+
+  float scroll_y_hint() const {
+    DCHECK_EQ(ET_GESTURE_SCROLL_BEGIN, type_);
+    return data.scroll_begin.y_hint;
+  }
+
+  float scroll_x() const {
+    DCHECK_EQ(ET_GESTURE_SCROLL_UPDATE, type_);
+    return data.scroll_update.x;
+  }
+
+  float scroll_y() const {
+    DCHECK_EQ(ET_GESTURE_SCROLL_UPDATE, type_);
+    return data.scroll_update.y;
+  }
+
+  float velocity_x() const {
+    DCHECK_EQ(ET_SCROLL_FLING_START, type_);
+    return data.fling_velocity.x;
+  }
+
+  float velocity_y() const {
+    DCHECK_EQ(ET_SCROLL_FLING_START, type_);
+    return data.fling_velocity.y;
+  }
+
+  float first_finger_width() const {
+    DCHECK_EQ(ET_GESTURE_TWO_FINGER_TAP, type_);
+    return data.first_finger_enclosing_rectangle.width;
+  }
+
+  float first_finger_height() const {
+    DCHECK_EQ(ET_GESTURE_TWO_FINGER_TAP, type_);
+    return data.first_finger_enclosing_rectangle.height;
+  }
+
+  float scale() const {
+    DCHECK_EQ(ET_GESTURE_PINCH_UPDATE, type_);
+    return data.scale;
+  }
+
+  bool swipe_left() const {
+    DCHECK_EQ(ET_GESTURE_SWIPE, type_);
+    return data.swipe.left;
+  }
+
+  bool swipe_right() const {
+    DCHECK_EQ(ET_GESTURE_SWIPE, type_);
+    return data.swipe.right;
+  }
+
+  bool swipe_up() const {
+    DCHECK_EQ(ET_GESTURE_SWIPE, type_);
+    return data.swipe.up;
+  }
+
+  bool swipe_down() const {
+    DCHECK_EQ(ET_GESTURE_SWIPE, type_);
+    return data.swipe.down;
+  }
+
+  int tap_count() const {
+    DCHECK(type_ == ET_GESTURE_TAP ||
+           type_ == ET_GESTURE_TAP_UNCONFIRMED ||
+           type_ == ET_GESTURE_DOUBLE_TAP);
+    return data.tap_count;
+  }
+
+  void set_tap_count(int tap_count) {
+    DCHECK_GE(tap_count, 0);
+    DCHECK(type_ == ET_GESTURE_TAP ||
+           type_ == ET_GESTURE_TAP_UNCONFIRMED ||
+           type_ == ET_GESTURE_DOUBLE_TAP);
+    data.tap_count = tap_count;
+  }
+
+ private:
+  EventType type_;
+  union Details {
+    Details();
+    struct {  // SCROLL start details.
+      // Distance that caused the scroll to start.  Generally redundant with
+      // the x/y values from the first scroll_update.
+      float x_hint;
+      float y_hint;
+    } scroll_begin;
+
+    struct {  // SCROLL delta.
+      float x;
+      float y;
+    } scroll_update;
+
+    float scale;  // PINCH scale.
+
+    struct {  // FLING velocity.
+      float x;
+      float y;
+    } fling_velocity;
+
+    // Dimensions of the first finger's enclosing rectangle for
+    // TWO_FINGER_TAP.
+    struct {
+      float width;
+      float height;
+    } first_finger_enclosing_rectangle;
+
+    struct {  // SWIPE direction.
+      bool left;
+      bool right;
+      bool up;
+      bool down;
+    } swipe;
+
+    // Tap information must be set for ET_GESTURE_TAP,
+    // ET_GESTURE_TAP_UNCONFIRMED, and ET_GESTURE_DOUBLE_TAP events.
+    int tap_count;  // TAP repeat count.
+  } data;
+
+  int touch_points_;  // Number of active touch points in the gesture.
+
+  // Bounding box is an axis-aligned rectangle that contains all the
+  // enclosing rectangles of the touch-points in the gesture.
+  gfx::RectF bounding_box_;
+};
+
+}  // namespace ui
+
+#endif  // UI_EVENTS_GESTURE_DETECTION_GESTURE_EVENT_DETAILS_H_