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.

  serialplot 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 serialplot.  If not, see <http://www.gnu.org/licenses/>.

*/

#include "zoomer.h"

#include <qwt_plot.h>

#include <QtDebug>

#include <QMouseEvent>

Zoomer::Zoomer(QWidget* widget, bool doReplot) :

    ScrollZoomer(widget)

{

    is_panning = false;

    // set corner widget between the scrollbars with default background color

    auto cornerWidget = new QWidget();

    auto bgColor = cornerWidget->palette().color(QPalette::Window).name();

    auto styleSheet = QString("background-color:%1;").arg(bgColor);

    cornerWidget->setStyleSheet(styleSheet);

    ScrollZoomer::setCornerWidget(cornerWidget);

}

void Zoomer::zoom(int up)

{

    ScrollZoomer::zoom(up);

    if(zoomRectIndex() == 0)

    {

        emit unzoomed();

    }

}

void Zoomer::zoom( const QRectF & rect)

{

    // set the zoom base when user zooms in to first level

    if (zoomRectIndex() == 0)

    {

        this->setZoomBase(false);

    }

    ScrollZoomer::zoom(rect);

}

QwtText Zoomer::trackerTextF(const QPointF& pos) const

{

    QwtText b = ScrollZoomer::trackerTextF(pos);

    const QPolygon pa = selection();

    {

        return b;

    }

    const QRectF rect = invTransform(QRect(pa.first(), pa.last()).normalized());

    QString sizeText = QString(" [%1, %2]").\

        arg(rect.width(), 0, 'g', 4).\

        arg(rect.height(), 0, 'g', 4);

    b.setText(b.text() + sizeText);

    return b;

}

void Zoomer::drawRubberBand(QPainter* painter) const

{

    const double FILL_ALPHA = 0.2;

    QColor color = painter->pen().color();

    color.setAlphaF(FILL_ALPHA);

    painter->setBrush(color);

    ScrollZoomer::drawRubberBand(painter);