astareditor.cpp

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#include <QtWidgets>

#include "astareditor.h"
#include "astarrating.h"

//! [0]
AStarEditor::AStarEditor(QWidget *parent)
    : QWidget(parent)
{
    setMouseTracking(true);
    setAutoFillBackground(true);
}
//! [0]

QSize AStarEditor::sizeHint() const
{
    return myStarRating.sizeHint();
}

//! [1]
void AStarEditor::paintEvent(QPaintEvent *)
{
    QPainter painter(this);
    myStarRating.paint(&painter, rect(), this->palette(),
                       AStarRating::Editable);
}
//! [1]

//! [2]
void AStarEditor::mouseMoveEvent(QMouseEvent *event)
{
    int star = starAtPosition(event->x());

    if (event->x() <= 2 || event->x() >= width() - 2 || event->y() <= 2 || event->y() >= height() - 2) //if leaving the widget, reset to old value
    {
//        qDebug()<<"mouseMoveEvent"<<event<<event->x()<<event->y()<<event->localPos()<<star<<height()<<width()<<starRating().starCount()<<oldStarRating.starCount();
        myStarRating.setStarCount(oldStarRating.starCount());
        update();
    }
    else if (star != myStarRating.starCount() && star != -1) {
        myStarRating.setStarCount(star);
        update();
    }
}
//! [2]

//! [3]
void AStarEditor::mouseReleaseEvent(QMouseEvent * /* event */)
{
//    qDebug()<<"mouseReleaseEvent";
    oldStarRating = myStarRating;
    emit editingFinished();
}
//! [3]

//! [4]
int AStarEditor::starAtPosition(int x)
{
    int star = (x / (myStarRating.sizeHint().width()
                     / (myStarRating.maxStarCount()+1))); //changed from 0..5 instead from 1..5
    if (star < 0 || star > myStarRating.maxStarCount())
        return -1;

    return star;
}
//! [4]