frameWidth = 3; // so we hardcode a more reasonable framewidth than 7
setFixedHeight(QFontMetrics(topicFont).height() + 2*frameWidth);
+ textWidth = 0;
fillText = " *** ";
oneshot = true;
timer = new QTimer(this);
timer->setInterval(20);
connect(timer, SIGNAL(timeout()), this, SLOT(updateOffset()));
+ connect(this, SIGNAL(clicked()), this, SLOT(startScrolling()));
}
TopicBar::~TopicBar() {
}
-void TopicBar::setContents(QString t, bool _oneshot) {
- text = t; oneshot = _oneshot;
+void TopicBar::resizeEvent(QResizeEvent *event) {
+ QPushButton::resizeEvent(event);
+ calcTextMetrics();
+}
+
+void TopicBar::calcTextMetrics() {
int w = width() - 2*frameWidth;
QRect boundingRect = QFontMetrics(topicFont).boundingRect(text);
- if(boundingRect.width() <= w) {
+ textWidth = boundingRect.width();
+ if(textWidth <= w) {
offset = 0; fillTextStart = -1; secondTextStart = -1;
+ displayText = text;
timer->stop();
} else {
- fillTextStart = boundingRect.width();
+ fillTextStart = textWidth;
boundingRect = QFontMetrics(topicFont).boundingRect(fillText);
secondTextStart = fillTextStart + boundingRect.width();
- text = QString("%1%2%1").arg(text).arg(fillText);
+ displayText = QString("%1%2%1").arg(text).arg(fillText);
offset = 0;
timer->start();
}
}
+// TODO catch resizeEvent for scroll settings
+void TopicBar::setContents(QString t, bool _oneshot) {
+ text = t; oneshot = _oneshot;
+ calcTextMetrics();
+}
+
void TopicBar::paintEvent(QPaintEvent *event) {
QPushButton::paintEvent(event);
QPainter painter(this);
painter.setFont(topicFont);
painter.setClipRect(frameWidth, frameWidth, rect().width() - 2*frameWidth, rect().height() - 2*frameWidth);
- painter.drawText(QPoint(-offset + frameWidth, QFontMetrics(topicFont).ascent() + frameWidth), text);
+ painter.drawText(QPoint(-offset + frameWidth, QFontMetrics(topicFont).ascent() + frameWidth), displayText);
}
}
update();
}
+
+void TopicBar::startScrolling() {
+ if(displayText.length() > text.length()) {
+ oneshot = false;
+ timer->start();
+ }
+}
+
+void TopicBar::stopScrolling() {
+ oneshot = true;
+}