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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_TOUCH_INPUT_SCALER_H_ | |
| 6 #define REMOTING_CLIENT_TOUCH_INPUT_SCALER_H_ | |
| 7 | |
| 8 #include "base/macros.h" | |
| 9 #include "remoting/protocol/input_filter.h" | |
| 10 #include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h" | |
| 11 | |
| 12 namespace remoting { | |
| 13 | |
| 14 namespace protocol { | |
| 15 class TouchEvent; | |
| 16 } // namespace protocol | |
| 17 | |
| 18 // Scales the touch input coordinates to host coordinates and clamps so | |
| 19 // that the values do not go outside the remote desktop. | |
| 20 // Also resizes the touch size. | |
| 21 class TouchInputScaler : public protocol::InputFilter { | |
| 22 public: | |
| 23 TouchInputScaler() = default; | |
| 24 explicit TouchInputScaler(InputStub* input_stub); | |
| 25 ~TouchInputScaler() override; | |
| 26 | |
| 27 // Set input and output desktop sizes. | |
| 28 void set_input_size(const webrtc::DesktopSize& size) { | |
| 29 input_size_.set(size.width() - 1, size.height() - 1); | |
| 30 } | |
| 31 void set_output_size(const webrtc::DesktopSize& size) { | |
| 32 output_size_.set(size.width() - 1, size.height() - 1); | |
| 33 } | |
| 34 | |
| 35 // protocol::InputStub interface. | |
| 36 void InjectTouchEvent(const protocol::TouchEvent& event) override; | |
| 37 | |
| 38 private: | |
| 39 // Sizes for scaling and clamping coordinates and sizes. | |
| 40 // These hold the max-X,Y coordinates and not the actual width and height. | |
| 41 webrtc::DesktopSize input_size_; | |
| 42 webrtc::DesktopSize output_size_; | |
| 43 | |
| 44 DISALLOW_COPY_AND_ASSIGN(TouchInputScaler); | |
| 45 }; | |
| 46 | |
| 47 } // namespace remoting | |
| 48 | |
| 49 #endif // REMOTING_CLIENT_TOUCH_INPUT_SCALER_H_ | |
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