diff options
Diffstat (limited to 'chromium/ui/events/gesture_event_details.cc')
-rw-r--r-- | chromium/ui/events/gesture_event_details.cc | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/chromium/ui/events/gesture_event_details.cc b/chromium/ui/events/gesture_event_details.cc new file mode 100644 index 00000000000..4026d06ecdb --- /dev/null +++ b/chromium/ui/events/gesture_event_details.cc @@ -0,0 +1,71 @@ +// 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) { + DCHECK_GE(type, ET_GESTURE_TYPE_START); + DCHECK_LE(type, ET_GESTURE_TYPE_END); + 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; + break; + + case ui::ET_SCROLL_FLING_START: + data.fling_velocity.x = delta_x; + data.fling_velocity.y = delta_y; + 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_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::Details::Details() { + memset(this, 0, sizeof(Details)); +} + +} // namespace ui |