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#include "starwidget.h"
#include <QSvgRenderer>
#include <QPainter>
#include <QPaintEvent>
#include <QDebug>
#include <QMouseEvent>
#include <unistd.h>
#include <QStyle>
#include <QStyleOption>
QPixmap *StarWidget::activeStar = 0;
QPixmap *StarWidget::inactiveStar = 0;
QPixmap StarWidget::starActive()
{
return (*activeStar);
}
QPixmap StarWidget::starInactive()
{
return (*inactiveStar);
}
int StarWidget::currentStars() const
{
return current;
}
void StarWidget::mouseReleaseEvent(QMouseEvent *event)
{
if (readOnly) {
return;
}
int starClicked = event->pos().x() / IMG_SIZE + 1;
if (starClicked > TOTALSTARS)
starClicked = TOTALSTARS;
if (current == starClicked)
current -= 1;
else
current = starClicked;
Q_EMIT valueChanged(current);
update();
}
void StarWidget::paintEvent(QPaintEvent *event)
{
QPainter p(this);
for (int i = 0; i < current; i++)
p.drawPixmap(i * IMG_SIZE + SPACING, 0, starActive());
for (int i = current; i < TOTALSTARS; i++)
p.drawPixmap(i * IMG_SIZE + SPACING, 0, starInactive());
if (hasFocus()) {
QStyleOptionFocusRect option;
option.initFrom(this);
option.backgroundColor = palette().color(QPalette::Background);
style()->drawPrimitive(QStyle::PE_FrameFocusRect, &option, &p, this);
}
}
void StarWidget::setCurrentStars(int value)
{
current = value;
update();
Q_EMIT valueChanged(current);
}
StarWidget::StarWidget(QWidget *parent, Qt::WindowFlags f) : QWidget(parent, f),
current(0),
readOnly(false)
{
if (!activeStar) {
activeStar = new QPixmap();
QSvgRenderer render(QString(":star"));
QPixmap renderedStar(IMG_SIZE, IMG_SIZE);
renderedStar.fill(Qt::transparent);
QPainter painter(&renderedStar);
render.render(&painter, QRectF(0, 0, IMG_SIZE, IMG_SIZE));
(*activeStar) = renderedStar;
}
if (!inactiveStar) {
inactiveStar = new QPixmap();
(*inactiveStar) = grayImage(activeStar);
}
setFocusPolicy(Qt::StrongFocus);
}
QPixmap StarWidget::grayImage(QPixmap *coloredImg)
{
QImage img = coloredImg->toImage();
for (int i = 0; i < img.width(); ++i) {
for (int j = 0; j < img.height(); ++j) {
QRgb rgb = img.pixel(i, j);
if (!rgb)
continue;
QColor c(rgb);
int gray = (c.red() + c.green() + c.blue()) / 3;
img.setPixel(i, j, qRgb(gray, gray, gray));
}
}
return QPixmap::fromImage(img);
}
QSize StarWidget::sizeHint() const
{
return QSize(IMG_SIZE * TOTALSTARS + SPACING * (TOTALSTARS - 1), IMG_SIZE);
}
void StarWidget::setReadOnly(bool r)
{
readOnly = r;
}
void StarWidget::focusInEvent(QFocusEvent *event)
{
setFocus();
QWidget::focusInEvent(event);
}
void StarWidget::focusOutEvent(QFocusEvent *event)
{
QWidget::focusOutEvent(event);
}
void StarWidget::keyPressEvent(QKeyEvent *event)
{
if (event->key() == Qt::Key_Up || event->key() == Qt::Key_Right) {
if (currentStars() < TOTALSTARS) {
setCurrentStars(currentStars() + 1);
}
} else if (event->key() == Qt::Key_Down || event->key() == Qt::Key_Left) {
if (currentStars() > 0) {
setCurrentStars(currentStars() - 1);
}
}
}
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