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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_EMPTY_CURSOR_FILTER_H_
#define REMOTING_CLIENT_EMPTY_CURSOR_FILTER_H_
#include "base/macros.h"
#include "remoting/protocol/cursor_shape_stub.h"
namespace remoting {
// Returns an empty cursor.
protocol::CursorShapeInfo EmptyCursorShape();
// Returns true of the supplied cursor is empty, i.e. width and/or height <= 0.
bool IsCursorShapeEmpty(const protocol::CursorShapeInfo& cursor_shape);
// Helper that checks whether a cursor has any visible pixels, and resizes
// it down to (0x0) if not.
// TODO(wez): Turn this into a general-purpose cropping filter that both
// client and host can use.
class EmptyCursorFilter : public protocol::CursorShapeStub {
public:
explicit EmptyCursorFilter(protocol::CursorShapeStub* cursor_stub);
~EmptyCursorFilter() override;
// protocol::CursorShapeStub interface.
void SetCursorShape(const protocol::CursorShapeInfo& cursor_shape) override;
// Replaces the stub to which cursor shapes will be passed-on.
void set_cursor_stub(protocol::CursorShapeStub* cursor_stub) {
cursor_stub_ = cursor_stub;
}
private:
protocol::CursorShapeStub* cursor_stub_;
DISALLOW_COPY_AND_ASSIGN(EmptyCursorFilter);
};
} // namespace remoting
#endif // REMOTING_CLIENT_EMPTY_CURSOR_FILTER_H_
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