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implement visual bell #1361

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implement visual bell #1361

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41 changes: 41 additions & 0 deletions src/termwidget.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@
#include <QMessageBox>
#include <QAbstractButton>
#include <QMouseEvent>
#include <QGraphicsEffect>
#include <cassert>

#ifdef HAVE_QDBUS
Expand Down Expand Up @@ -256,7 +257,47 @@ void TermWidgetImpl::activateUrl(const QUrl & url, bool fromContextMenu) {
}
}

class BloodShot : public QGraphicsEffect
{
public:
BloodShot(QObject *parent = nullptr) : QGraphicsEffect(parent) {}
protected:
virtual void draw(QPainter *painter) override
{
QPoint offset;
const QPixmap pixmap = sourcePixmap(Qt::DeviceCoordinates, &offset);
if (pixmap.isNull())
return;
QTransform restoreTransform = painter->worldTransform();
painter->setWorldTransform(QTransform());
painter->drawPixmap(offset, pixmap);
painter->setPen(Qt::NoPen);
QRectF rect = sourceBoundingRect(Qt::DeviceCoordinates);
rect.translate(offset);
QRadialGradient rg(rect.center(), qMax(rect.width(), rect.height())/2.0f);
rg.setColorAt(0, QColor(153,0,0,0));
rg.setColorAt(1, QColor(153,0,0,200));
painter->fillRect(rect, rg);
painter->setWorldTransform(restoreTransform);
}
};

void TermWidgetImpl::bell() {
QWidget *terminalDisplay = nullptr;
for (QObject *kid : children())
{
if (kid->isWidgetType() && kid->inherits("Konsole::TerminalDisplay"))
{
terminalDisplay = qobject_cast<QWidget*>(kid);
break;
}
}
if (terminalDisplay)
{
BloodShot *bang = new BloodShot(terminalDisplay);
terminalDisplay->setGraphicsEffect(bang);
QTimer::singleShot(150, this, [=]() { delete bang; });
}
if (Properties::Instance()->audibleBell) {
#ifdef HAVE_LIBCANBERRA
if (!libcanberra_context) {
Expand Down