blob: 0dc4a29c3d3479b609273bdd383726f0f62547d4 [file] [log] [blame]
// 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