// MIT License
// 
// Copyright (c) 2019 Ruhr University Bochum, Chair for Embedded Security. All Rights reserved.
// Copyright (c) 2019 Marc Fyrbiak, Sebastian Wallat, Max Hoffmann ("ORIGINAL AUTHORS"). All rights reserved.
// Copyright (c) 2021 Max Planck Institute for Security and Privacy. All Rights reserved.
// Copyright (c) 2021 Jörn Langheinrich, Julian Speith, Nils Albartus, René Walendy, Simon Klix ("ORIGINAL AUTHORS"). All Rights reserved.
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

#pragma once
#include <QAbstractScrollArea>
#include <QScrollBar>
#include <math.h>
#include "wave_transform.h"

namespace hal {

    class WaveRenderEngine;
    class WaveScrollbar;
    class WaveTimescale;
    class WaveCursor;
    class WaveDataList;
    class WaveItemHash;
    class WaveDataTimeframe;

    class WaveGraphicsCanvas : public QAbstractScrollArea
    {
        Q_OBJECT
        WaveDataList* mWaveDataList;
        WaveItemHash* mWaveItemHash;
        WaveTransform mTransform;
        WaveRenderEngine* mRenderEngine;
        WaveScrollbar* mScrollbar;
        WaveTimescale* mTimescale;
        WaveCursor* mCursor;
        bool mMoveCursor;
        double mCursorTime;
        int mCursorXpos;
        QWidget* mDragZoom;

        void setCursorTimeInternal(double tCursor);
    Q_SIGNALS:
        void cursorMoved(double tCursor, int xpos);
        void undoStateChanged();
    private Q_SLOTS:
        void handleContextMenuRequested(const QPoint& pos);
        void handleCopyCursorTime();
        void handleEnterCursorTime();
        void handleJumpPreviousTransition();
        void handleJumpNextTransition();

    public Q_SLOTS:
        void updateRequest();
        void handleWaveUpdated(int iwave, int groupId);
        void handleTimeframeChanged(const hal::WaveDataTimeframe* tframe);
    protected:
        void resizeEvent(QResizeEvent *) override;
        void wheelEvent(QWheelEvent *) override;
        void mousePressEvent(QMouseEvent *) override;
        void mouseMoveEvent(QMouseEvent *) override;
        void mouseReleaseEvent(QMouseEvent *) override;
        void mouseDoubleClickEvent(QMouseEvent *) override;
        void scrollContentsBy(int dx, int dy) override;
    public:
        WaveGraphicsCanvas(WaveDataList* wdlist, WaveItemHash* wHash, QWidget* parent = nullptr);
        const WaveTransform* transform() const { return &mTransform; }
        const WaveItemHash* waveItemHash() const { return mWaveItemHash; }
        bool canUndoZoom() const;
        void undoZoom();
        void emitUndoStateChanged();
        void toggleZoom();
        void setCursorPosition(double tCursor, int xpos);
        WaveRenderEngine* renderEngine() { return mRenderEngine; }
    };
}
