viewport.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef NANCY_UI_VIEWPORT_H
#define NANCY_UI_VIEWPORT_H

#include "engines/nancy/time.h"
#include "engines/nancy/video.h"

#include "engines/nancy/renderobject.h"

namespace Common {
class String;
}

namespace Nancy {

class Scene;
struct NancyInput;

namespace UI {

class Viewport : public Nancy::RenderObject {
public:
    Viewport() :
        RenderObject(6),
        _movementLastFrame(0),
        _edgesMask(0),
        _currentFrame(0),
        _videoFormat(kLargeVideoFormat),
        _stickyCursorPos(-1, -1),
        _panningType(kPanNone),
        _decoder(AVFDecoder::kLoadBidirectional),
        _autoMove(false) {}

    virtual ~Viewport() { _decoder.close(); _fullFrame.free(); }

    void init() override;
    void handleInput(NancyInput &input);

    void loadVideo(const Common::Path &filename, uint frameNr = 0, uint verticalScroll = 0, byte panningType = kPanNone, uint16 format = 2, const Common::Path &palette = Common::Path());

    void setFrame(uint frameNr);
    void setNextFrame();
    void setPreviousFrame();

    void setVerticalScroll(uint scroll);
    void scrollUp(uint delta);
    void scrollDown(uint delta);

    uint16 getFrameCount() const { return _decoder.isVideoLoaded() ? _decoder.getFrameCount() : 0; }
    uint16 getCurFrame() const { return _currentFrame; }
    uint16 getCurVerticalScroll() const { return _drawSurface.getOffsetFromOwner().y; }
    uint16 getMaxScroll() const;

    Common::Rect convertViewportToScreen(const Common::Rect &viewportRect) const;
    Common::Rect convertScreenToViewport(const Common::Rect &viewportRect) const;

    void disableEdges(byte edges);
    void enableEdges(byte edges);

protected:
    void setEdgesSize(uint16 upSize, uint16 downSize, uint16 leftSize, uint16 rightSize);

    Common::Rect _nonScrollZone;
    byte _edgesMask;

    byte _movementLastFrame;
    Time _nextMovementTime;

    byte _panningType;

    AVFDecoder _decoder;
    uint16 _currentFrame;
    uint16 _videoFormat;
    Graphics::ManagedSurface _fullFrame;
    Common::Rect _format1Bounds;
    Common::Rect _format2Bounds;
    Common::Point _stickyCursorPos;

    bool _autoMove;
};

} // End of namespace UI
} // End of namespace Nancy

#endif // NANCY_UI_VIEWPORT_H