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Unified Diff: content/browser/renderer_host/touch_event_queue.h

Issue 20007002: Move more input-related files to renderer_host/input (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Proper .gypi alpha ordering Created 7 years, 5 months ago
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Index: content/browser/renderer_host/touch_event_queue.h
diff --git a/content/browser/renderer_host/touch_event_queue.h b/content/browser/renderer_host/touch_event_queue.h
deleted file mode 100644
index 09783a8b9947ad618b43808502b88470db9eb078..0000000000000000000000000000000000000000
--- a/content/browser/renderer_host/touch_event_queue.h
+++ /dev/null
@@ -1,93 +0,0 @@
-// Copyright (c) 2012 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.
-
-#ifndef CONTENT_BROWSER_RENDERER_HOST_TOUCH_EVENT_QUEUE_H_
-#define CONTENT_BROWSER_RENDERER_HOST_TOUCH_EVENT_QUEUE_H_
-
-#include <deque>
-#include <map>
-
-#include "base/basictypes.h"
-#include "content/common/content_export.h"
-#include "content/port/browser/event_with_latency_info.h"
-#include "content/port/common/input_event_ack_state.h"
-#include "third_party/WebKit/public/web/WebInputEvent.h"
-
-namespace content {
-
-class CoalescedWebTouchEvent;
-
-// Interface with which TouchEventQueue can forward touch events, and dispatch
-// touch event responses.
-class TouchEventQueueClient {
- public:
- virtual ~TouchEventQueueClient() {}
-
- virtual void SendTouchEventImmediately(
- const TouchEventWithLatencyInfo& event) = 0;
-
- virtual void OnTouchEventAck(
- const TouchEventWithLatencyInfo& event,
- InputEventAckState ack_result) = 0;
-};
-
-// A queue for throttling and coalescing touch-events.
-class TouchEventQueue {
- public:
-
- // The |client| must outlive the TouchEventQueue.
- explicit TouchEventQueue(TouchEventQueueClient* client);
- virtual ~TouchEventQueue();
-
- // Adds an event to the queue. The event may be coalesced with previously
- // queued events (e.g. consecutive touch-move events can be coalesced into a
- // single touch-move event). The event may also be immediately forwarded to
- // the renderer (e.g. when there are no other queued touch event).
- void QueueEvent(const TouchEventWithLatencyInfo& event);
-
- // Notifies the queue that a touch-event has been processed by the renderer.
- // At this point, the queue may send one or more gesture events and/or
- // additional queued touch-events to the renderer.
- void ProcessTouchAck(InputEventAckState ack_result);
-
- // Empties the queue of touch events. This may result in any number of gesture
- // events being sent to the renderer.
- void FlushQueue();
-
- // Returns whether the event-queue is empty.
- bool empty() const WARN_UNUSED_RESULT {
- return touch_queue_.empty();
- }
-
- private:
- friend class MockRenderWidgetHost;
-
- CONTENT_EXPORT size_t GetQueueSize() const;
- CONTENT_EXPORT const TouchEventWithLatencyInfo& GetLatestEvent() const;
-
- // Pops the touch-event from the top of the queue and sends it to the
- // TouchEventQueueClient. This reduces the size of the queue by one.
- void PopTouchEventWithAck(InputEventAckState ack_result);
-
- bool ShouldForwardToRenderer(const WebKit::WebTouchEvent& event) const;
-
- // Handles touch event forwarding and ack'ed event dispatch.
- TouchEventQueueClient* client_;
-
- typedef std::deque<CoalescedWebTouchEvent*> TouchQueue;
- TouchQueue touch_queue_;
-
- // Maintain the ACK status for each touch point.
- typedef std::map<int, InputEventAckState> TouchPointAckStates;
- TouchPointAckStates touch_ack_states_;
-
- // Used to defer touch forwarding when ack dispatch triggers |QueueEvent()|.
- bool dispatching_touch_ack_;
-
- DISALLOW_COPY_AND_ASSIGN(TouchEventQueue);
-};
-
-} // namespace content
-
-#endif // CONTENT_BROWSER_RENDERER_HOST_TOUCH_EVENT_QUEUE_H_
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