peri4
e791618a17
work with icons - remove unused, organize and update to last oxygen add BusyIcon widget
115 lines
2.1 KiB
C++
115 lines
2.1 KiB
C++
#include "busy_icon.h"
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#include "qad_types.h"
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#include <QApplication>
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#include <QPainter>
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#include <qmath.h>
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BusyIcon::BusyIcon(QWidget * parent): QWidget(parent) {}
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BusyIcon::~BusyIcon() {}
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void BusyIcon::start() {
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stop();
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ang = 0;
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timer = startTimer(25);
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}
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void BusyIcon::stop() {
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if (timer == 0) return;
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killTimer(timer);
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timer = 0;
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}
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QIcon BusyIcon::icon() {
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return icon_;
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}
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void BusyIcon::setIcon(QIcon i) {
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icon_ = i;
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image = i.pixmap(512, 512).toImage();
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}
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void BusyIcon::setIconSize(qreal s) {
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icon_size = s;
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updateGeometry();
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update();
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}
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void BusyIcon::setIconScale(qreal s) {
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icon_scale = s;
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updateGeometry();
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update();
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}
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void BusyIcon::setCircleWidth(qreal s) {
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circle_width = s;
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updateGeometry();
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update();
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}
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QSize BusyIcon::sizeHint() const {
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return preferredIconSize(icon_size, this);
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}
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void BusyIcon::timerEvent(QTimerEvent *) {
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if (!isVisible()) return;
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ang += 1;
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update();
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}
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QPointF point(qreal r, qreal a) {
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return QPointF(-r * sin(a), -r * cos(a));
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}
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qreal frag(qreal a, qreal f) {
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int i = (int)(a / f);
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return a - (i * f);
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}
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qreal angle(int a) {
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return (cos(frag(a / 15., M_PI)) - 1) * M_PI;
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}
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void BusyIcon::paintEvent(QPaintEvent *) {
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QPainter p(this);
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if (rect().isEmpty()) return;
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qreal w = width(), h = height();
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p.translate(w / 2., h / 2.);
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p.scale(qMin(w, h), qMin(w, h));
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float imgsz = icon_scale / 100.f, ioff = circle_width / 200.f;
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p.setRenderHint(QPainter::SmoothPixmapTransform);
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p.setRenderHint(QPainter::Antialiasing);
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p.drawImage(QRectF(-imgsz / 2., -imgsz / 2., imgsz, imgsz), image);
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p.setPen(Qt::NoPen);
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p.setBrush(palette().brush(QPalette::Active, QPalette::Highlight));
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p.setRenderHint(QPainter::Antialiasing);
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qreal sa = angle(ang), ea = angle(ang + 10);
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if (ea > sa) ea -= M_PI * 2.;
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qreal rs = 0.5 - ioff, rb = 0.5;
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int steps = qMin(128, qRound(qAbs(ea - sa) / 0.025));
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QPolygonF pol;
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for (int i = 0; i <= steps; ++i) {
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qreal c = i / (qreal)steps;
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pol << point(rs, sa * c + ea * (1. - c));
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}
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for (int i = 0; i <= steps; ++i) {
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qreal c = i / (qreal)steps;
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pol << point(rb, ea * c + sa * (1. - c));
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}
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p.drawPolygon(pol);
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}
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