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// Copyright 2015 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 REMOTING_CLIENT_TOUCH_INPUT_SCALER_H_
#define REMOTING_CLIENT_TOUCH_INPUT_SCALER_H_
#include "remoting/protocol/input_filter.h"
#include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h"
namespace remoting {
namespace protocol {
class TouchEvent;
} // namespace protocol
// Scales the touch input coordinates to host coordinates and clamps so
// that the values do not go outside the remote desktop.
// Also resizes the touch size.
class TouchInputScaler : public protocol::InputFilter {
public:
TouchInputScaler() = default;
explicit TouchInputScaler(InputStub* input_stub);
~TouchInputScaler() override;
// Set input and output desktop sizes.
void set_input_size(const webrtc::DesktopSize& size) {
input_size_.set(size.width() - 1, size.height() - 1);
}
void set_output_size(const webrtc::DesktopSize& size) {
output_size_.set(size.width() - 1, size.height() - 1);
}
// protocol::InputStub interface.
void InjectTouchEvent(const protocol::TouchEvent& event) override;
private:
// Sizes for scaling and clamping coordinates and sizes.
// These hold the max-X,Y coordinates and not the actual width and height.
webrtc::DesktopSize input_size_;
webrtc::DesktopSize output_size_;
DISALLOW_COPY_AND_ASSIGN(TouchInputScaler);
};
} // namespace remoting
#endif // REMOTING_CLIENT_TOUCH_INPUT_SCALER_H_
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