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#include <QtGui>

#include "stareditor.h"

#include "starrating.h"

//! [0]

StarEditor::StarEditor(QWidget *parent)

    : QWidget(parent)

{

    setMouseTracking(true);

    setAutoFillBackground(true);

}

//! [0]

QSize StarEditor::sizeHint() const

{

    return myStarRating.sizeHint();

}

//! [1]

void StarEditor::paintEvent(QPaintEvent *)

{

    QPainter painter(this);

    myStarRating.paint(&painter, rect(), this->palette(),

                       StarRating::Editable);

}

//! [1]

//! [2]

void StarEditor::mouseMoveEvent(QMouseEvent *event)

{

    int star = starAtPosition(event->x());

    if (star != myStarRating.starCount() && star != -1) {

        myStarRating.setStarCount(star);

        update();

    }

}

//! [2]

//! [3]

void StarEditor::mouseReleaseEvent(QMouseEvent * /* event */)

{

    emit editingFinished();

}

//! [3]

//! [4]

int StarEditor::starAtPosition(int x)

{

    int star = (x / (myStarRating.sizeHint().width()

                     / myStarRating.maxStarCount())) + 1;

    if (star <= 0 || star > myStarRating.maxStarCount())

        return -1;

    return star;

}

//! [4]