1 files changed, 118 insertions, 0 deletions
diff --git a/ui/events/gesture_event_details.cc b/ui/events/gesture_event_details.cc
new file mode 100644
index 0000000..983d2a1
--- /dev/null
+++ b/ui/events/gesture_event_details.cc
@@ -0,0 +1,118 @@
+// 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.
+
+#include "ui/events/gesture_event_details.h"
+
+namespace ui {
+
+GestureEventDetails::GestureEventDetails() : type_(ET_UNKNOWN) {}
+
+GestureEventDetails::GestureEventDetails(ui::EventType type,
+                                         float delta_x,
+                                         float delta_y)
+    : type_(type),
+      touch_points_(1) {
+  switch (type_) {
+    case ui::ET_GESTURE_SCROLL_BEGIN:
+      data.scroll_begin.x_hint = delta_x;
+      data.scroll_begin.y_hint = delta_y;
+      break;
+
+    case ui::ET_GESTURE_SCROLL_UPDATE:
+      data.scroll_update.x = delta_x;
+      data.scroll_update.y = delta_y;
+      data.scroll_update.x_ordinal = delta_x;
+      data.scroll_update.y_ordinal = delta_y;
+      break;
+
+    case ui::ET_SCROLL_FLING_START:
+      data.fling_velocity.x = delta_x;
+      data.fling_velocity.y = delta_y;
+      data.fling_velocity.x_ordinal = delta_x;
+      data.fling_velocity.y_ordinal = delta_y;
+      break;
+
+    case ui::ET_GESTURE_LONG_PRESS:
+      data.touch_id = static_cast<int>(delta_x);
+      CHECK_EQ(0.f, delta_y) << "Unknown data in delta_y for long press.";
+      break;
+
+    case ui::ET_GESTURE_TWO_FINGER_TAP:
+      data.first_finger_enclosing_rectangle.width = delta_x;
+      data.first_finger_enclosing_rectangle.height = delta_y;
+      break;
+
+    case ui::ET_GESTURE_PINCH_UPDATE:
+      data.scale = delta_x;
+      CHECK_EQ(0.f, delta_y) << "Unknown data in delta_y for pinch";
+      break;
+
+    case ui::ET_GESTURE_MULTIFINGER_SWIPE:
+      data.swipe.left = delta_x < 0;
+      data.swipe.right = delta_x > 0;
+      data.swipe.up = delta_y < 0;
+      data.swipe.down = delta_y > 0;
+      break;
+
+    case ui::ET_GESTURE_TAP:
+    case ui::ET_GESTURE_DOUBLE_TAP:
+    case ui::ET_GESTURE_TAP_UNCONFIRMED:
+      data.tap_count = static_cast<int>(delta_x);
+      CHECK_EQ(0.f, delta_y) << "Unknown data in delta_y for tap.";
+      break;
+
+    default:
+      if (delta_x != 0.f || delta_y != 0.f) {
+        DLOG(WARNING) << "A gesture event (" << type << ") had unknown data: ("
+                      << delta_x << "," << delta_y;
+      }
+      break;
+  }
+}
+
+GestureEventDetails::GestureEventDetails(ui::EventType type,
+                                         float delta_x,
+                                         float delta_y,
+                                         float delta_x_ordinal,
+                                         float delta_y_ordinal)
+    : type_(type),
+      touch_points_(1) {
+  CHECK(type == ui::ET_GESTURE_SCROLL_UPDATE ||
+        type == ui::ET_SCROLL_FLING_START);
+  switch (type_) {
+    case ui::ET_GESTURE_SCROLL_UPDATE:
+      data.scroll_update.x = delta_x;
+      data.scroll_update.y = delta_y;
+      data.scroll_update.x_ordinal = delta_x_ordinal;
+      data.scroll_update.y_ordinal = delta_y_ordinal;
+      break;
+
+    case ui::ET_SCROLL_FLING_START:
+      data.fling_velocity.x = delta_x;
+      data.fling_velocity.y = delta_y;
+      data.fling_velocity.x_ordinal = delta_x_ordinal;
+      data.fling_velocity.y_ordinal = delta_y_ordinal;
+      break;
+
+    default:
+      break;
+  }
+}
+
+void GestureEventDetails::SetScrollVelocity(float velocity_x,
+                                            float velocity_y,
+                                            float velocity_x_ordinal,
+                                            float velocity_y_ordinal) {
+  CHECK_EQ(ui::ET_GESTURE_SCROLL_UPDATE, type_);
+  data.scroll_update.velocity_x = velocity_x;
+  data.scroll_update.velocity_y = velocity_y;
+  data.scroll_update.velocity_x_ordinal = velocity_x_ordinal;
+  data.scroll_update.velocity_y_ordinal = velocity_y_ordinal;
+}
+
+GestureEventDetails::Details::Details() {
+  memset(this, 0, sizeof(Details));
+}
+
+}  // namespace ui