| // Copyright (c) 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 "content/browser/renderer_host/touch_smooth_scroll_gesture_aura.h" |
| |
| #include "content/browser/renderer_host/render_widget_host_impl.h" |
| #include "ui/aura/root_window.h" |
| #include "ui/events/event.h" |
| #include "ui/events/event_utils.h" |
| #include "ui/gfx/transform.h" |
| |
| namespace { |
| |
| void InjectTouchEvent(const gfx::Point& location, |
| ui::EventType type, |
| aura::Window* window) { |
| gfx::Point screen_location = location; |
| // First convert the location from Window to RootWindow. |
| aura::RootWindow* root_window = window->GetRootWindow(); |
| aura::Window::ConvertPointToTarget(window, root_window, &screen_location); |
| // Then convert the location from RootWindow to screen. |
| root_window->ConvertPointToHost(&screen_location); |
| ui::TouchEvent touch(type, screen_location, 0, 0, ui::EventTimeForNow(), |
| 1.0f, 1.0f, 1.0f, 1.0f); |
| aura::RootWindowHostDelegate* root_window_host_delegate = |
| root_window->AsRootWindowHostDelegate(); |
| root_window_host_delegate->OnHostTouchEvent(&touch); |
| } |
| |
| } // namespace |
| |
| namespace content { |
| |
| TouchSmoothScrollGestureAura::TouchSmoothScrollGestureAura(bool scroll_down, |
| int pixels_to_scroll, |
| int mouse_event_x, |
| int mouse_event_y, |
| aura::Window* window) |
| : scroll_down_(scroll_down), |
| pixels_to_scroll_(pixels_to_scroll), |
| pixels_scrolled_(0), |
| location_(mouse_event_x, mouse_event_y), |
| window_(window) { |
| } |
| |
| TouchSmoothScrollGestureAura::~TouchSmoothScrollGestureAura() {} |
| |
| bool TouchSmoothScrollGestureAura::ForwardInputEvents( |
| base::TimeTicks now, |
| RenderWidgetHost* host) { |
| if (pixels_scrolled_ >= pixels_to_scroll_) |
| return false; |
| |
| RenderWidgetHostImpl* host_impl = RenderWidgetHostImpl::From(host); |
| float position_delta = synthetic_gesture_calculator_.GetDelta(now, |
| host_impl->GetSyntheticGestureMessageInterval()); |
| |
| if (pixels_scrolled_ == 0) { |
| InjectTouchEvent(location_, ui::ET_TOUCH_PRESSED, window_); |
| } |
| |
| location_.Offset(0, scroll_down_ ? -position_delta : position_delta); |
| InjectTouchEvent(location_, ui::ET_TOUCH_MOVED, window_); |
| |
| pixels_scrolled_ += abs(position_delta); |
| |
| if (pixels_scrolled_ >= pixels_to_scroll_) { |
| InjectTouchEvent(location_, ui::ET_TOUCH_RELEASED, window_); |
| } |
| |
| return true; |
| } |
| |
| } // namespace content |