| // Copyright 2018 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/autoclick/autoclick_drag_event_rewriter.h" |
| |
| namespace ash { |
| |
| void AutoclickDragEventRewriter::SetEnabled(bool enabled) { |
| enabled_ = enabled; |
| } |
| |
| bool AutoclickDragEventRewriter::IsEnabled() const { |
| return enabled_; |
| } |
| |
| ui::EventDispatchDetails AutoclickDragEventRewriter::RewriteEvent( |
| const ui::Event& event, |
| const Continuation continuation) { |
| // Only rewrite mouse moved events to drag events when enabled. |
| if (!enabled_) |
| return SendEvent(continuation, &event); |
| |
| // On touchpads, a SCROLL_FLING_CANCEL can also indicate the start of a drag. |
| // If this rewriter is enabled, a SCROLL_FLING_CANCEL should simply be |
| // ignored. |
| if (event.type() == ui::ET_SCROLL_FLING_CANCEL) |
| return DiscardEvent(continuation); |
| |
| // Only rewrite move events, but any other type should still go through. |
| if (event.type() != ui::ET_MOUSE_MOVED) |
| return SendEvent(continuation, &event); |
| |
| const ui::MouseEvent* mouse_event = event.AsMouseEvent(); |
| // "Press" the left mouse button to make it seem like the user is holding it |
| // down. |
| int flags = mouse_event->flags() | ui::EF_LEFT_MOUSE_BUTTON; |
| ui::MouseEvent rewritten_event( |
| ui::ET_MOUSE_DRAGGED, mouse_event->location(), |
| mouse_event->root_location(), mouse_event->time_stamp(), flags, |
| mouse_event->changed_button_flags(), mouse_event->pointer_details()); |
| return SendEventFinally(continuation, &rewritten_event); |
| } |
| |
| } // namespace ash |