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Hyperlink + copy&paste enabled tool tips
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162
src/GUI/popup.cpp
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162
src/GUI/popup.cpp
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#include <QToolTip>
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#include <QStyle>
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#include <QStylePainter>
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#include <QStyleOptionFrame>
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#include <QLabel>
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#include <QMouseEvent>
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#include <QApplication>
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#include <QDesktopWidget>
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#include <QBasicTimer>
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#include "popup.h"
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#include <QDebug>
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class Label : public QLabel
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{
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public:
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Label(const QString &text, QWidget *parent = 0);
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~Label();
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bool eventFilter(QObject *o, QEvent *ev);
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void place(const QPoint &pos, QWidget *w);
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void deleteAfterTimer();
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void stopTimer() {_timer.stop();}
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static Label *_instance;
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protected:
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void paintEvent(QPaintEvent *event);
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void timerEvent(QTimerEvent *event);
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private:
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QBasicTimer _timer;
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};
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Label *Label::_instance = 0;
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Label::Label(const QString &text, QWidget *parent)
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: QLabel(text, parent, Qt::ToolTip | Qt::BypassGraphicsProxyWidget)
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{
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delete _instance;
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_instance = this;
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setForegroundRole(QPalette::ToolTipText);
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setBackgroundRole(QPalette::ToolTipBase);
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setPalette(QToolTip::palette());
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ensurePolished();
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setMargin(1 + style()->pixelMetric(QStyle::PM_ToolTipLabelFrameWidth, 0,
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this));
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setFrameStyle(QFrame::NoFrame);
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setAlignment(Qt::AlignLeft);
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setIndent(1);
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setWindowOpacity(style()->styleHint(QStyle::SH_ToolTipLabel_Opacity, 0,
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this) / 255.0);
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setTextInteractionFlags(Qt::TextBrowserInteraction);
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setOpenExternalLinks(true);
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setMouseTracking(true);
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qApp->installEventFilter(this);
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}
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Label::~Label()
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{
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_instance = 0;
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}
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void Label::paintEvent(QPaintEvent *event)
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{
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QStylePainter p(this);
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QStyleOptionFrame opt;
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opt.init(this);
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p.drawPrimitive(QStyle::PE_PanelTipLabel, opt);
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p.end();
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QLabel::paintEvent(event);
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}
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void Label::timerEvent(QTimerEvent *event)
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{
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if (event->timerId() == _timer.timerId()) {
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_timer.stop();
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deleteLater();
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}
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}
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bool Label::eventFilter(QObject *o, QEvent *ev)
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{
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Q_UNUSED(o);
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switch (ev->type()) {
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case QEvent::KeyPress:
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case QEvent::KeyRelease: {
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const int key = static_cast<QKeyEvent *>(ev)->key();
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if (key == Qt::Key_Escape) {
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deleteLater();
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return true;
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}
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break;
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}
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case QEvent::FocusIn:
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case QEvent::FocusOut:
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case QEvent::WindowActivate:
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case QEvent::WindowDeactivate:
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case QEvent::Close:
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deleteLater();
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break;
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case QEvent::MouseMove: {
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QRectF r(geometry().adjusted(-5, -20, 5, 20));
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QPointF p(static_cast<QMouseEvent*>(ev)->screenPos());
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if (!r.contains(p))
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deleteAfterTimer();
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break;
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}
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default:
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break;
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}
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return false;
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}
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void Label::place(const QPoint &pos, QWidget *w)
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{
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QRect screen = QApplication::desktop()->screenGeometry(w);
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QPoint p(pos.x() + 2, pos.y() + 16);
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if (p.x() + width() > screen.x() + screen.width())
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p.rx() -= 4 + width();
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if (p.y() + height() > screen.y() + screen.height())
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p.ry() -= 24 + height();
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if (p.y() < screen.y())
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p.setY(screen.y());
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if (p.x() + width() > screen.x() + screen.width())
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p.setX(screen.x() + screen.width() - width());
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if (p.x() < screen.x())
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p.setX(screen.x());
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if (p.y() + height() > screen.y() + screen.height())
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p.setY(screen.y() + screen.height() - height());
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this->move(p);
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}
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void Label::deleteAfterTimer()
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{
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if (!_timer.isActive())
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_timer.start(300, this);
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}
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void Popup::show(const QPoint &pos, const QString &text, QWidget *w)
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{
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if (Label::_instance) {
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Label::_instance->stopTimer();
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Label::_instance->setText(text);
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Label::_instance->resize(Label::_instance->sizeHint());
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} else {
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Label::_instance = new Label(text);
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Label::_instance->showNormal();
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}
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Label::_instance->place(pos, w);
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}
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