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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef REMOTING_CLIENT_PLUGIN_TOUCH_INPUT_SCALER_H_ |
| 6 #define REMOTING_CLIENT_PLUGIN_TOUCH_INPUT_SCALER_H_ |
| 7 |
| 8 #include "remoting/protocol/input_filter.h" |
| 9 #include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h" |
| 10 |
| 11 namespace remoting { |
| 12 |
| 13 namespace protocol { |
| 14 class TouchEvent; |
| 15 } // namespace protocol |
| 16 |
| 17 // Scales the touch input coordinates to host coordinates and clamps so |
| 18 // that the values do not go outside the remote desktop. |
| 19 // Also resizes the touch size. |
| 20 class TouchInputScaler : public protocol::InputFilter { |
| 21 public: |
| 22 TouchInputScaler() = default; |
| 23 explicit TouchInputScaler(InputStub* input_stub); |
| 24 ~TouchInputScaler() override; |
| 25 |
| 26 // Set input and output desktop sizes. |
| 27 void set_input_size(const webrtc::DesktopSize& size) { |
| 28 input_size_.set(size.width() - 1, size.height() - 1); |
| 29 } |
| 30 void set_output_size(const webrtc::DesktopSize& size) { |
| 31 output_size_.set(size.width() - 1, size.height() - 1); |
| 32 } |
| 33 |
| 34 // protocol::InputStub interface. |
| 35 void InjectTouchEvent(const protocol::TouchEvent& event) override; |
| 36 |
| 37 private: |
| 38 // Sizes for scaling and clamping coordinates and sizes. |
| 39 // These hold the max-X,Y coordinates and not the actual width and height. |
| 40 webrtc::DesktopSize input_size_; |
| 41 webrtc::DesktopSize output_size_; |
| 42 |
| 43 DISALLOW_COPY_AND_ASSIGN(TouchInputScaler); |
| 44 }; |
| 45 |
| 46 } // namespace remoting |
| 47 |
| 48 #endif // REMOTING_CLIENT_PLUGIN_TOUCH_INPUT_SCALER_H_ |
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