a3dde7c93e
Change-Id: I7e19b84ac4b6a8e380fc9a7dcc37cc08ced89b4b Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
123 lines
3.0 KiB
C++
123 lines
3.0 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include "blurpicker.h"
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#include <QtWidgets>
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#include <QtCore/qmath.h>
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#include <qmath.h>
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#include "blureffect.h"
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BlurPicker::BlurPicker(QWidget *parent): QGraphicsView(parent), m_index(0.0), m_animation(this, "index")
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{
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setBackgroundBrush(QPixmap(":/images/background.jpg"));
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setScene(new QGraphicsScene(this));
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setupScene();
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setIndex(0);
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m_animation.setDuration(400);
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m_animation.setEasingCurve(QEasingCurve::InOutSine);
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setRenderHint(QPainter::Antialiasing, true);
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setFrameStyle(QFrame::NoFrame);
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}
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qreal BlurPicker::index() const
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{
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return m_index;
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}
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void BlurPicker::setIndex(qreal index)
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{
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m_index = index;
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qreal baseline = 0;
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const qreal iconAngle = 2 * M_PI / m_icons.count();
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for (int i = 0; i < m_icons.count(); ++i) {
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QGraphicsItem *icon = m_icons[i];
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qreal a = (i + m_index) * iconAngle;
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qreal xs = 170 * qSin(a);
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qreal ys = 100 * qCos(a);
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QPointF pos(xs, ys);
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pos = QTransform().rotate(-20).map(pos);
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pos -= QPointF(40, 40);
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icon->setPos(pos);
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baseline = qMax(baseline, ys);
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static_cast<BlurEffect *>(icon->graphicsEffect())->setBaseLine(baseline);
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}
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scene()->update();
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}
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void BlurPicker::setupScene()
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{
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scene()->setSceneRect(-200, -120, 400, 240);
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QStringList names;
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names << ":/images/accessories-calculator.png";
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names << ":/images/accessories-text-editor.png";
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names << ":/images/help-browser.png";
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names << ":/images/internet-group-chat.png";
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names << ":/images/internet-mail.png";
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names << ":/images/internet-web-browser.png";
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names << ":/images/office-calendar.png";
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names << ":/images/system-users.png";
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for (int i = 0; i < names.count(); i++) {
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QPixmap pixmap(names[i]);
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QGraphicsPixmapItem *icon = scene()->addPixmap(pixmap);
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icon->setZValue(1);
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icon->setGraphicsEffect(new BlurEffect(icon));
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m_icons << icon;
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}
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QGraphicsPixmapItem *bg = scene()->addPixmap(QPixmap(":/images/background.jpg"));
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bg->setZValue(0);
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bg->setPos(-200, -150);
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}
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void BlurPicker::keyPressEvent(QKeyEvent *event)
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{
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int delta = 0;
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switch (event->key())
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{
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case Qt::Key_Left:
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delta = -1;
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break;
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case Qt::Key_Right:
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delta = 1;
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break;
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default:
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break;
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}
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if (m_animation.state() == QAbstractAnimation::Stopped && delta) {
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m_animation.setEndValue(m_index + delta);
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m_animation.start();
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event->accept();
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}
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}
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void BlurPicker::resizeEvent(QResizeEvent * /* event */)
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{
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}
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void BlurPicker::mousePressEvent(QMouseEvent *event)
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{
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int delta = 0;
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if (event->position().x() > (width() / 2))
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{
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delta = 1;
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}
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else
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{
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delta = -1;
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}
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if (m_animation.state() == QAbstractAnimation::Stopped && delta) {
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m_animation.setEndValue(m_index + delta);
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m_animation.start();
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event->accept();
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}
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}
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