/*

 * Copyright 2017 Google Inc.

 *

 * Use of this source code is governed by a BSD-style license that can be

 * found in the LICENSE file.

 */

#ifndef SkSGInvalidationController_DEFINED

#define SkSGInvalidationController_DEFINED

#include "include/core/SkMatrix.h"

#include "include/core/SkRect.h"

#include "include/core/SkTypes.h"

#include <vector>

namespace sksg {

/**

 * Receiver for invalidation events.

 *

 * Tracks dirty regions for repaint.

 */

class InvalidationController {

public:

    InvalidationController();

    InvalidationController(const InvalidationController&) = delete;

    InvalidationController& operator=(const InvalidationController&) = delete;

    void inval(const SkRect&, const SkMatrix& ctm = SkMatrix::I());

    const SkRect& bounds() const { return fBounds; }

    auto begin() const { return fRects.cbegin(); }

    auto   end() const { return fRects.cend();   }

    void reset();

private:

    std::vector<SkRect> fRects;

    SkRect              fBounds;

};

} // namespace sksg

#endif // SkSGInvalidationController_DEFINED