| // 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. |
| |
| #include "remoting/protocol/mouse_input_filter.h" |
| |
| #include <algorithm> |
| |
| #include "base/logging.h" |
| #include "remoting/proto/event.pb.h" |
| |
| namespace remoting { |
| namespace protocol { |
| |
| MouseInputFilter::MouseInputFilter() = default; |
| |
| MouseInputFilter::MouseInputFilter(InputStub* input_stub) |
| : InputFilter(input_stub) { |
| } |
| |
| MouseInputFilter::~MouseInputFilter() = default; |
| |
| void MouseInputFilter::InjectMouseEvent(const MouseEvent& event) { |
| if (input_rect_.is_empty() || output_rect_.is_empty()) |
| return; |
| |
| // We scale based on the maximum input & output coordinates, rather than the |
| // input and output sizes, so that it's possible to reach the edge of the |
| // output when up-scaling. We also take care to round up or down correctly, |
| // which is important when down-scaling. |
| // After scaling, we offset by the output rect origin. This is normally (0,0), |
| // but will be non-zero when we are showing a single display. |
| MouseEvent out_event(event); |
| if (out_event.has_x()) { |
| int x = out_event.x() * output_rect_.width(); |
| x = (x + input_rect_.width() / 2) / input_rect_.width(); |
| out_event.set_x(output_rect_.left() + |
| std::max(0, std::min(output_rect_.width(), x))); |
| } |
| if (out_event.has_y()) { |
| int y = out_event.y() * output_rect_.height(); |
| y = (y + input_rect_.height() / 2) / input_rect_.height(); |
| out_event.set_y(output_rect_.top() + |
| std::max(0, std::min(output_rect_.height(), y))); |
| } |
| |
| InputFilter::InjectMouseEvent(out_event); |
| } |
| |
| void MouseInputFilter::set_input_size(const webrtc::DesktopRect& rect) { |
| input_rect_ = webrtc::DesktopRect::MakeXYWH( |
| rect.left(), rect.top(), rect.width() - 1, rect.height() - 1); |
| } |
| |
| void MouseInputFilter::set_output_size(const webrtc::DesktopRect& rect) { |
| output_rect_ = webrtc::DesktopRect::MakeXYWH( |
| rect.left(), rect.top(), rect.width() - 1, rect.height() - 1); |
| } |
| |
| } // namespace protocol |
| } // namespace remoting |