1 files changed, 46 insertions, 0 deletions
diff --git a/src/elidinglabel.cc b/src/elidinglabel.cc
new file mode 100644
index 0000000..e1df4b6
--- /dev/null
+++ b/src/elidinglabel.cc
@@ -0,0 +1,46 @@
+/***
+  This file is part of pavucontrol-qt.
+
+  pavucontrol-qt is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 2 of the License, or
+  (at your option) any later version.
+
+  pavucontrol-qt is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with pavucontrol-qt. If not, see <https://www.gnu.org/licenses/>.
+***/
+
+#include "elidinglabel.h"
+#include <QPainter>
+#include <QStyleOption>
+
+ElidingLabel::ElidingLabel(QWidget *parent, Qt::WindowFlags f):
+    QLabel(parent, f),
+    lastWidth_(0) {
+    setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
+    // set a min width to prevent the window from widening with long texts
+    setMinimumWidth(fontMetrics().averageCharWidth() * 10);
+}
+
+// A simplified version of QLabel::paintEvent() without pixmap or shortcut but with eliding
+void ElidingLabel::paintEvent(QPaintEvent */*event*/) {
+    QRect cr = contentsRect().adjusted(margin(), margin(), -margin(), -margin());
+    QString txt = text();
+    // if the text is changed or its rect is resized (due to window resizing),
+    // find whether it needs to be elided...
+    if (txt != lastText_ || cr.width() != lastWidth_) {
+        lastText_ = txt;
+        lastWidth_ = cr.width();
+        elidedText_ = fontMetrics().elidedText(txt, Qt::ElideMiddle, cr.width());
+    }
+    // ... then, draw the (elided) text */
+    QPainter painter(this);
+    QStyleOption opt;
+    opt.initFrom(this);
+    style()->drawItemText(&painter, cr, alignment(), opt.palette, isEnabled(), elidedText_, foregroundRole());
+}