Added ElidingLabel to support text eliding for dock area tabs, removed debug output

src/ElidingLabel.cpp

@@ -0,0 +1,198 @@
+/*******************************************************************************
+** Qt Advanced Docking System
+** Copyright (C) 2017 Uwe Kindler
+**
+** This library is free software; you can redistribute it and/or
+** modify it under the terms of the GNU Lesser General Public
+** License as published by the Free Software Foundation; either
+** version 2.1 of the License, or (at your option) any later version.
+**
+** This library 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
+** Lesser General Public License for more details.
+**
+** You should have received a copy of the GNU Lesser General Public
+** License along with this library; If not, see <http://www.gnu.org/licenses/>.
+******************************************************************************/
+
+
+//============================================================================
+/// \file   ElidingLabel.cpp
+/// \author Uwe Kindler
+/// \date   05.11.2018
+/// \brief  Implementation of CElidingLabel
+//============================================================================
+
+//============================================================================
+//                                   INCLUDES
+//============================================================================
+#include <ElidingLabel.h>
+#include <QMouseEvent>
+
+
+namespace ads
+{
+/**
+ * Private data of public CClickableLabel
+ */
+struct ElidingLabelPrivate
+{
+	CElidingLabel* _this;
+	Qt::TextElideMode ElideMode = Qt::ElideNone;
+	QString Text;
+
+	ElidingLabelPrivate(CElidingLabel* _public) : _this(_public) {}
+
+	void elideText(int Width);
+
+	/**
+	 * Convenience function to check if the
+	 */
+	bool isModeElideNone() const
+	{
+		return Qt::ElideNone == ElideMode;
+	}
+};
+
+
+//============================================================================
+void ElidingLabelPrivate::elideText(int Width)
+{
+	if (isModeElideNone())
+	{
+		return;
+	}
+    QFontMetrics fm = _this->fontMetrics();
+    QString  str = fm.elidedText(Text, ElideMode, Width - _this->margin() * 2 - _this->indent());
+    if (str == "…")
+    {
+    	str = Text.at(0);
+    }
+    _this->QLabel::setText(str);
+}
+
+
+//============================================================================
+CElidingLabel::CElidingLabel(QWidget* parent, Qt::WindowFlags f)
+	: QLabel(parent, f),
+	  d(new ElidingLabelPrivate(this))
+{
+
+}
+
+
+//============================================================================
+CElidingLabel::CElidingLabel(const QString& text, QWidget* parent, Qt::WindowFlags f)
+	: QLabel(text, parent,f),
+	  d(new ElidingLabelPrivate(this))
+{
+	d->Text = text;
+	setToolTip(text);
+}
+
+
+//============================================================================
+CElidingLabel::~CElidingLabel()
+{
+	delete d;
+}
+
+
+//============================================================================
+Qt::TextElideMode CElidingLabel::elideMode() const
+{
+	return d->ElideMode;
+}
+
+
+//============================================================================
+void CElidingLabel::setElideMode(Qt::TextElideMode mode)
+{
+	d->ElideMode = mode;
+	d->elideText(size().width());
+}
+
+
+//============================================================================
+void CElidingLabel::mouseReleaseEvent(QMouseEvent* event)
+{
+	if (event->button() != Qt::LeftButton)
+	{
+		return;
+	}
+
+	emit clicked();
+}
+
+
+//============================================================================
+void CElidingLabel::mouseDoubleClickEvent( QMouseEvent *ev )
+{
+	Q_UNUSED(ev)
+	emit doubleClicked();
+}
+
+
+//============================================================================
+void CElidingLabel::resizeEvent(QResizeEvent *event)
+{
+	if (!d->isModeElideNone())
+	{
+		d->elideText(event->size().width());
+	}
+    QLabel::resizeEvent(event);
+}
+
+
+//============================================================================
+QSize CElidingLabel::minimumSizeHint() const
+{
+    if (pixmap() != nullptr || d->isModeElideNone())
+    {
+        return QLabel::minimumSizeHint();
+    }
+    const QFontMetrics  &fm = fontMetrics();
+    QSize size(fm.width("…"), fm.height());
+    return size;
+}
+
+
+//============================================================================
+QSize CElidingLabel::sizeHint() const
+{
+    if (pixmap() != nullptr || d->isModeElideNone())
+    {
+        return QLabel::sizeHint();
+    }
+    const QFontMetrics& fm = fontMetrics();
+    QSize size(fm.width(d->Text), QLabel::sizeHint().height());
+	return size;
+}
+
+
+//============================================================================
+void CElidingLabel::setText(const QString &text)
+{
+	if (d->isModeElideNone())
+	{
+		Super::setText(text);
+	}
+	else
+	{
+		d->Text = text;
+		setToolTip( text );
+		d->elideText(this->size().width());
+	}
+}
+
+
+//============================================================================
+QString CElidingLabel::text() const
+{
+	return d->Text;
+}
+} // namespace QtLabb
+
+//---------------------------------------------------------------------------
+// EOF ClickableLabel.cpp