| // Copyright 2013 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 "ash/shelf/shelf_bezel_event_handler.h" |
| |
| #include "ash/shelf/shelf.h" |
| #include "ash/shell.h" |
| #include "ui/aura/window.h" |
| #include "ui/display/display.h" |
| #include "ui/display/screen.h" |
| #include "ui/events/event.h" |
| #include "ui/gfx/geometry/point.h" |
| #include "ui/gfx/geometry/rect.h" |
| #include "ui/wm/core/coordinate_conversion.h" |
| |
| namespace ash { |
| |
| ShelfBezelEventHandler::ShelfBezelEventHandler(Shelf* shelf) |
| : shelf_(shelf), in_touch_drag_(false) { |
| Shell::Get()->AddPreTargetHandler(this); |
| } |
| |
| ShelfBezelEventHandler::~ShelfBezelEventHandler() { |
| Shell::Get()->RemovePreTargetHandler(this); |
| } |
| |
| void ShelfBezelEventHandler::OnGestureEvent(ui::GestureEvent* event) { |
| gfx::Point point_in_screen(event->location()); |
| aura::Window* target = static_cast<aura::Window*>(event->target()); |
| ::wm::ConvertPointToScreen(target, &point_in_screen); |
| gfx::Rect screen = display::Screen::GetScreen() |
| ->GetDisplayNearestPoint(point_in_screen) |
| .bounds(); |
| if ((!screen.Contains(point_in_screen) && |
| IsShelfOnBezel(screen, point_in_screen)) || |
| in_touch_drag_) { |
| if (shelf_->ProcessGestureEvent(*event)) { |
| switch (event->type()) { |
| case ui::ET_GESTURE_SCROLL_BEGIN: |
| in_touch_drag_ = true; |
| break; |
| case ui::ET_GESTURE_SCROLL_END: |
| case ui::ET_SCROLL_FLING_START: |
| in_touch_drag_ = false; |
| break; |
| default: |
| break; |
| } |
| event->StopPropagation(); |
| } |
| } |
| } |
| |
| bool ShelfBezelEventHandler::IsShelfOnBezel(const gfx::Rect& screen, |
| const gfx::Point& point) const { |
| switch (shelf_->alignment()) { |
| case SHELF_ALIGNMENT_BOTTOM: |
| case SHELF_ALIGNMENT_BOTTOM_LOCKED: |
| return point.y() >= screen.bottom(); |
| case SHELF_ALIGNMENT_LEFT: |
| return point.x() <= screen.x(); |
| case SHELF_ALIGNMENT_RIGHT: |
| return point.x() >= screen.right(); |
| } |
| NOTREACHED(); |
| return false; |
| } |
| |
| } // namespace ash |