camera.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_TASKBAR_CAMERA_H
#define NANCY_UI_TASKBAR_CAMERA_H

#include "engines/nancy/enginedata.h"
#include "engines/nancy/renderobject.h"

namespace Nancy {

struct NancyInput;

namespace UI {

// The standalone camera introduced in Nancy14 (UICM), switched on by its photo
// album (CameraAction). While it is on, a viewfinder box follows the cursor
// and the scene's hotspots and panning are suppressed; a click photographs
// every subject the box frames.
class Camera : public RenderObject {
public:
    Camera() : RenderObject(9) {}
    virtual ~Camera() {}

    void init() override;

    // itemID is the inventory item whose close-up is the photo album, or -1.
    void activate(int16 itemID = -1);
    void deactivate();
    bool isActive() const { return _isActive; }

    void handleInput(NancyInput &input);

    // -- The camera roll, shared with the photo album --

    static uint numPictures();
    // Publishes the roll's size to the game variable UICM names, if it names one.
    static void setPictureCount(uint count);
    static void playSoundBlock(const RandomSoundBlock &block);

protected:
    // UICM's picture size, centred on the cursor and kept inside the viewport.
    Common::Rect viewfinderScreenRect() const;
    void drawViewfinder();
    void takePicture();
    void returnToAlbum();

    const UICM *_cameraData = nullptr;
    Graphics::ManagedSurface _image;
    Common::Point _aimPoint;
    int16 _itemID = -1;
    bool _isActive = false;
};

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

#endif // NANCY_UI_TASKBAR_CAMERA_H