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| |
| #include "blurpicker.h" |
| |
| #include <QtWidgets> |
| #include <QtCore/qmath.h> |
| #include <qmath.h> |
| #include "blureffect.h" |
| |
| BlurPicker::BlurPicker(QWidget *parent): QGraphicsView(parent), m_index(0.0), m_animation(this, "index") |
| { |
| setBackgroundBrush(QPixmap(":/images/background.jpg")); |
| setScene(new QGraphicsScene(this)); |
| |
| setupScene(); |
| setIndex(0); |
| |
| m_animation.setDuration(400); |
| m_animation.setEasingCurve(QEasingCurve::InOutSine); |
| |
| setRenderHint(QPainter::Antialiasing, true); |
| setFrameStyle(QFrame::NoFrame); |
| } |
| |
| qreal BlurPicker::index() const |
| { |
| return m_index; |
| } |
| |
| void BlurPicker::setIndex(qreal index) |
| { |
| m_index = index; |
| |
| qreal baseline = 0; |
| const qreal iconAngle = 2 * M_PI / m_icons.count(); |
| for (int i = 0; i < m_icons.count(); ++i) { |
| QGraphicsItem *icon = m_icons[i]; |
| qreal a = (i + m_index) * iconAngle; |
| qreal xs = 170 * qSin(a); |
| qreal ys = 100 * qCos(a); |
| QPointF pos(xs, ys); |
| pos = QTransform().rotate(-20).map(pos); |
| pos -= QPointF(40, 40); |
| icon->setPos(pos); |
| baseline = qMax(baseline, ys); |
| static_cast<BlurEffect *>(icon->graphicsEffect())->setBaseLine(baseline); |
| } |
| |
| scene()->update(); |
| } |
| |
| void BlurPicker::setupScene() |
| { |
| scene()->setSceneRect(-200, -120, 400, 240); |
| |
| QStringList names; |
| names << ":/images/accessories-calculator.png"; |
| names << ":/images/accessories-text-editor.png"; |
| names << ":/images/help-browser.png"; |
| names << ":/images/internet-group-chat.png"; |
| names << ":/images/internet-mail.png"; |
| names << ":/images/internet-web-browser.png"; |
| names << ":/images/office-calendar.png"; |
| names << ":/images/system-users.png"; |
| |
| for (int i = 0; i < names.count(); i++) { |
| QPixmap pixmap(names[i]); |
| QGraphicsPixmapItem *icon = scene()->addPixmap(pixmap); |
| icon->setZValue(1); |
| icon->setGraphicsEffect(new BlurEffect(icon)); |
| m_icons << icon; |
| } |
| |
| QGraphicsPixmapItem *bg = scene()->addPixmap(QPixmap(":/images/background.jpg")); |
| bg->setZValue(0); |
| bg->setPos(-200, -150); |
| } |
| |
| void BlurPicker::keyPressEvent(QKeyEvent *event) |
| { |
| int delta = 0; |
| switch (event->key()) |
| { |
| case Qt::Key_Left: |
| delta = -1; |
| break; |
| case Qt::Key_Right: |
| delta = 1; |
| break; |
| default: |
| break; |
| } |
| if (m_animation.state() == QAbstractAnimation::Stopped && delta) { |
| m_animation.setEndValue(m_index + delta); |
| m_animation.start(); |
| event->accept(); |
| } |
| } |
| |
| void BlurPicker::resizeEvent(QResizeEvent * /* event */) |
| { |
| } |
| |
| void BlurPicker::mousePressEvent(QMouseEvent *event) |
| { |
| int delta = 0; |
| if(event->x() > (width() / 2)) |
| { |
| delta = 1; |
| } |
| else |
| { |
| delta = -1; |
| } |
| |
| if (m_animation.state() == QAbstractAnimation::Stopped && delta) { |
| m_animation.setEndValue(m_index + delta); |
| m_animation.start(); |
| event->accept(); |
| } |
| } |