ImgWidget.h

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/*
 * Copyright (C) 2012 by
 *   MetraLabs GmbH (MLAB), GERMANY
 * and
 *   Neuroinformatics and Cognitive Robotics Labs (NICR) at TU Ilmenau, GERMANY
 * All rights reserved.
 *
 * Contact: info@mira-project.org
 *
 * Commercial Usage:
 *   Licensees holding valid commercial licenses may use this file in
 *   accordance with the commercial license agreement provided with the
 *   software or, alternatively, in accordance with the terms contained in
 *   a written agreement between you and MLAB or NICR.
 *
 * GNU General Public License Usage:
 *   Alternatively, this file may be used under the terms of the GNU
 *   General Public License version 3.0 as published by the Free Software
 *   Foundation and appearing in the file LICENSE.GPL3 included in the
 *   packaging of this file. Please review the following information to
 *   ensure the GNU General Public License version 3.0 requirements will be
 *   met: http://www.gnu.org/copyleft/gpl.html.
 *   Alternatively you may (at your option) use any later version of the GNU
 *   General Public License if such license has been publicly approved by
 *   MLAB and NICR (or its successors, if any).
 *
 * IN NO EVENT SHALL "MLAB" OR "NICR" BE LIABLE TO ANY PARTY FOR DIRECT,
 * INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF
 * THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF "MLAB" OR
 * "NICR" HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * "MLAB" AND "NICR" SPECIFICALLY DISCLAIM ANY WARRANTIES, INCLUDING,
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
 * ON AN "AS IS" BASIS, AND "MLAB" AND "NICR" HAVE NO OBLIGATION TO
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 */

#ifndef _MIRA_IMGWIDGET_H_
#define _MIRA_IMGWIDGET_H_

#include <QWidget>

#include <image/Img.h>
#include <image/Colormap.h>

class QImage;
class QScrollArea;
class QLayout;

namespace mira {


class ImgWidget : public QWidget
{
    Q_OBJECT;
public:
    ImgWidget(QWidget* parent = 0, bool enableScroll=true);

    ~ImgWidget();

    void setImage(const Img<>& image);

    void setImage(const Img<>& image, double scaleMin, double scaleMax);

    void setColormap(const Colormap& map);
    void clearColormap();

    QWidget* getContentWidget();

    void setAutoResize(bool autoResize);

    void setAutoScale(bool autoScale);

    void enableScroll(bool enable);

public:

    class IMouseListener
    {
    public:
        virtual ~IMouseListener() {}

        virtual void onMousePressed(QMouseEvent* e) = 0;
        virtual void onMouseReleased(QMouseEvent* e) = 0;
        virtual void onMouseMoved(QMouseEvent * e) = 0;
    };

    void setMouseListener(IMouseListener* listener);


protected:
    //  overwritten from QWidget
    virtual void mousePressEvent(QMouseEvent* e);

    void contentsMousePressEvent ( QMouseEvent * e );

    void resizeEvent(QResizeEvent * event);

    void setImage();

    void setImageScaledToSize();

protected:
    class ImgPainterWidget;

    QLayout* mLayout;
    QScrollArea* mScrollArea;
    ImgPainterWidget* mContentWidget;

    bool mAutoResize;
    bool mAutoScale;
    QImage mCurrentImage;

    QVector<QRgb> mColorTable;
};


}

#endif