2021-09-12 Fred Gleason <fredg@paravelsystems.com>

* Added an 'RDBiPushButton' widget.
	* Modified the behavior of the buttons in the 'Edit Cart' dialog in
	rdlibrary(1) to grey-out when there is no cut selected.

Signed-off-by: Fred Gleason <fredg@paravelsystems.com>

lib/Makefile.am

@@ -67,6 +67,7 @@ dist_librd_la_SOURCES = dbversion.h\
                         rdaudioinfo.cpp rdaudioinfo.h\
                         rdaudiosettings.cpp rdaudiosettings.h\
                         rdaudiostore.cpp rdaudiostore.h\
+                        rdbipushbutton.cpp rdbipushbutton.h\
                         rdbusybar.cpp rdbusybar.h\
                         rdbusydialog.cpp rdbusydialog.h\
                         rdbutton_dialog.cpp rdbutton_dialog.h\
@@ -301,6 +302,7 @@ nodist_librd_la_SOURCES = moc_rdadd_cart.cpp\
                           moc_rdaudioimport.cpp\
                           moc_rdaudioinfo.cpp\
                           moc_rdaudiostore.cpp\
+                          moc_rdbipushbutton.cpp\
                           moc_rdbusybar.cpp\
                           moc_rdbusydialog.cpp\
                           moc_rdbutton_dialog.cpp\

lib/librd.pro

@@ -1,4 +1,4 @@
-# lib.pro
+# librd.pro
 #
 # The lib/ QMake project file for Rivendell.
 #
@@ -44,6 +44,7 @@ SOURCES += rdapplication.cpp
 SOURCES += rdaudio_exists.cpp
 SOURCES += rdaudio_port.cpp
 SOURCES += rdaudiosettings.cpp
+SOURCES += rdbipushbutton.cpp
 SOURCES += rdbusybar.cpp
 SOURCES += rdbusydialog.cpp
 SOURCES += rdbutton_dialog.cpp
@@ -228,6 +229,7 @@ HEADERS += rdapplication.h
 HEADERS += rdaudio_exists.h
 HEADERS += rdaudio_port.h
 HEADERS += rdaudiosettings.h
+HEADERS += rdbipushbutton.h
 HEADERS += rdbusybar.h
 HEADERS += rdbusydialog.h
 HEADERS += rdbutton_dialog.h

lib/rdbipushbutton.cpp

@@ -0,0 +1,98 @@
+//   rdbipushbutton.cpp
+//
+//   QPushButton with a two-part legend
+//
+//   (C) Copyright 2021 Fred Gleason <fredg@paravelsystems.com>
+//
+//   This program is free software; you can redistribute it and/or modify
+//   it under the terms of the GNU Library General Public License 
+//   version 2 as published by the Free Software Foundation.
+//
+//   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., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+
+#include <QEvent>
+#include <QPainter>
+
+#include "rdbipushbutton.h"
+
+RDBiPushButton::RDBiPushButton(QWidget *parent,RDConfig *c)
+  : QPushButton(parent), RDFontEngine(font(),c)
+{
+}
+
+
+RDBiPushButton::RDBiPushButton(const QString &top_text,
+			       const QString &bottom_text,QWidget *parent,
+			       RDConfig *c)
+  : QPushButton(parent), RDFontEngine(font(),c)
+{
+  d_top_text=top_text;
+  d_bottom_text=bottom_text;
+}
+
+
+QString RDBiPushButton::topText() const
+{
+  return d_top_text;
+}
+
+
+void RDBiPushButton::setTopText(const QString &str)
+{
+  d_top_text=str;
+  update();
+}
+
+
+QString RDBiPushButton::bottomText() const
+{
+  return d_bottom_text;
+}
+
+
+void RDBiPushButton::setBottomText(const QString &str)
+{
+  d_bottom_text=str;
+  update();
+}
+
+
+void RDBiPushButton::changeEvent(QEvent *e)
+{
+  if(e->type()==QEvent::EnabledChange) {
+    update();
+    e->accept();
+  }
+}
+
+
+void RDBiPushButton::paintEvent(QPaintEvent *e)
+{
+  int w=size().width();
+  int h=size().height();
+  QFontMetrics *m=buttonFontMetrics();
+
+  QPushButton::paintEvent(e);
+
+  QPainter *p=new QPainter(this);
+  if(isEnabled()) {
+    p->setPen(palette().color(QPalette::Inactive,QPalette::ButtonText));
+  }
+  else {
+    p->setPen(palette().color(QPalette::Disabled,QPalette::ButtonText));
+  }
+  p->setFont(buttonFont());
+  p->drawText((w-m->width(d_top_text))/2,h/2-5,d_top_text);
+  p->drawLine(10,h/2,w-10,h/2);
+  p->drawText((w-m->width(d_bottom_text))/2,h/2+m->height(),d_bottom_text);
+  p->end();
+  delete p;
+}

lib/rdbipushbutton.h

@@ -0,0 +1,50 @@
+//   rdbipushbutton.h
+//
+//   QPushButton with a two-part legend
+//
+//   (C) Copyright 2021 Fred Gleason <fredg@paravelsystems.com>
+//
+//   This program is free software; you can redistribute it and/or modify
+//   it under the terms of the GNU Library General Public License 
+//   version 2 as published by the Free Software Foundation.
+//
+//   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., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+
+#ifndef RDBIPUSHBUTTON_H
+#define RDBIPUSHBUTTON_H
+
+#include <QPushButton>
+
+#include <rdfontengine.h>
+
+class RDBiPushButton : public QPushButton, public RDFontEngine
+{
+  Q_OBJECT
+ public:
+  RDBiPushButton(QWidget *parent,RDConfig *c=NULL);
+  RDBiPushButton(const QString &top_text,const QString &bottom_text,
+		 QWidget *parent,RDConfig *c=NULL);
+  QString topText() const;
+  void setTopText(const QString &str);
+  QString bottomText() const;
+  void setBottomText(const QString &str);
+
+ protected:
+  void changeEvent(QEvent *e);
+  void paintEvent(QPaintEvent *e);
+
+ private:
+  QString d_top_text;
+  QString d_bottom_text;
+};
+
+
+#endif  // RDBIPUSHBUTTON_H