1 files changed, 134 insertions, 0 deletions
diff --git a/kalarm/lib/radiobutton.cpp b/kalarm/lib/radiobutton.cpp
new file mode 100644
index 000000000..d66911eeb
--- /dev/null
+++ b/kalarm/lib/radiobutton.cpp
@@ -0,0 +1,134 @@
+/*
+ *  radiobutton.cpp  -  radio button with read-only option
+ *  Program:  kalarm
+ *  Copyright (c) 2002, 2003 by David Jarvie <software@astrojar.org.uk>
+ *
+ *  This program 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.
+ *
+ *  This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include "radiobutton.moc"
+
+
+RadioButton::RadioButton(QWidget* parent, const char* name)
+	: QRadioButton(parent, name),
+	  mFocusPolicy(focusPolicy()),
+	  mFocusWidget(0),
+	  mReadOnly(false)
+{ }
+
+RadioButton::RadioButton(const QString& text, QWidget* parent, const char* name)
+	: QRadioButton(text, parent, name),
+	  mFocusPolicy(focusPolicy()),
+	  mFocusWidget(0),
+	  mReadOnly(false)
+{ }
+
+/******************************************************************************
+*  Set the read-only status. If read-only, the button can be toggled by the
+*  application, but not by the user.
+*/
+void RadioButton::setReadOnly(bool ro)
+{
+	if ((int)ro != (int)mReadOnly)
+	{
+		mReadOnly = ro;
+		setFocusPolicy(ro ? QWidget::NoFocus : mFocusPolicy);
+		if (ro)
+			clearFocus();
+	}
+}
+
+/******************************************************************************
+*  Specify a widget to receive focus when the button is clicked on.
+*/
+void RadioButton::setFocusWidget(QWidget* w, bool enable)
+{
+	mFocusWidget = w;
+	mFocusWidgetEnable = enable;
+	if (w)
+		connect(this, SIGNAL(clicked()), SLOT(slotClicked()));
+	else
+		disconnect(this, SIGNAL(clicked()), this, SLOT(slotClicked()));
+}
+
+/******************************************************************************
+*  Called when the button is clicked.
+*  If it is now checked, focus is transferred to any specified focus widget.
+*/
+void RadioButton::slotClicked()
+{
+	if (mFocusWidget  &&  isChecked())
+	{
+		if (mFocusWidgetEnable)
+			mFocusWidget->setEnabled(true);
+		mFocusWidget->setFocus();
+	}
+}
+
+/******************************************************************************
+*  Event handlers to intercept events if in read-only mode.
+*  Any events which could change the button state are discarded.
+*/
+void RadioButton::mousePressEvent(QMouseEvent* e)
+{
+	if (mReadOnly)
+	{
+		// Swallow up the event if it's the left button
+		if (e->button() == Qt::LeftButton)
+			return;
+	}
+	QRadioButton::mousePressEvent(e);
+}
+
+void RadioButton::mouseReleaseEvent(QMouseEvent* e)
+{
+	if (mReadOnly)
+	{
+		// Swallow up the event if it's the left button
+		if (e->button() == Qt::LeftButton)
+			return;
+	}
+	QRadioButton::mouseReleaseEvent(e);
+}
+
+void RadioButton::mouseMoveEvent(QMouseEvent* e)
+{
+	if (!mReadOnly)
+		QRadioButton::mouseMoveEvent(e);
+}
+
+void RadioButton::keyPressEvent(QKeyEvent* e)
+{
+	if (mReadOnly)
+		switch (e->key())
+		{
+			case Qt::Key_Up:
+			case Qt::Key_Left:
+			case Qt::Key_Right:
+			case Qt::Key_Down:
+				// Process keys which shift the focus
+			case Qt::Key_Escape:
+				break;
+			default:
+				return;
+		}
+	QRadioButton::keyPressEvent(e);
+}
+
+void RadioButton::keyReleaseEvent(QKeyEvent* e)
+{
+	if (!mReadOnly)
+		QRadioButton::keyReleaseEvent(e);
+}