From a2674fa9de25af1dd12f648df2782d08404a13ad Mon Sep 17 00:00:00 2001
From: f4exb <f4exb06@gmail.com>
Date: Sun, 1 Jul 2018 11:07:37 +0200
Subject: [PATCH] Created combo box without arrow

---
 sdrgui/CMakeLists.txt          |  2 ++
 sdrgui/gui/comboboxnoarrow.cpp | 33 ++++++++++++++++++++++++++++
 sdrgui/gui/comboboxnoarrow.h   | 39 ++++++++++++++++++++++++++++++++++
 3 files changed, 74 insertions(+)
 create mode 100644 sdrgui/gui/comboboxnoarrow.cpp
 create mode 100644 sdrgui/gui/comboboxnoarrow.h

diff --git a/sdrgui/CMakeLists.txt b/sdrgui/CMakeLists.txt
index 4f6289690..401f3b677 100644
--- a/sdrgui/CMakeLists.txt
+++ b/sdrgui/CMakeLists.txt
@@ -14,6 +14,7 @@ set(sdrgui_SOURCES
     gui/commanditem.cpp
     gui/commandkeyreceiver.cpp
     gui/commandoutputdialog.cpp
+    gui/comboboxnoarrow.cpp
     gui/crightclickenabler.cpp
     gui/cwkeyergui.cpp
     gui/editcommanddialog.cpp
@@ -73,6 +74,7 @@ set(sdrgui_HEADERS
     gui/commanditem.h
     gui/commandkeyreceiver.h
     gui/commandoutputdialog.h
+    gui/comboboxnoarrow.h
     gui/crightclickenabler.h
     gui/cwkeyergui.h
     gui/editcommanddialog.h
diff --git a/sdrgui/gui/comboboxnoarrow.cpp b/sdrgui/gui/comboboxnoarrow.cpp
new file mode 100644
index 000000000..327b9891e
--- /dev/null
+++ b/sdrgui/gui/comboboxnoarrow.cpp
@@ -0,0 +1,33 @@
+///////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2018 F4EXB                                                      //
+// written by Edouard Griffiths                                                  //
+//                                                                               //
+// 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 as version 3 of the License, or                  //
+//                                                                               //
+// 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 V3 for more details.                               //
+//                                                                               //
+// You should have received a copy of the GNU General Public License             //
+// along with this program. If not, see <http://www.gnu.org/licenses/>.          //
+///////////////////////////////////////////////////////////////////////////////////
+
+#include <QPainter>
+
+#include "comboboxnoarrow.h"
+
+void ComboBoxNoArrow::paintEvent (QPaintEvent *ev __attribute__((unused)))
+{
+    QPainter p;
+    p.begin (this);
+    QStyleOptionComboBox opt;
+    opt.initFrom (this);
+    style()->drawPrimitive (QStyle::PE_PanelButtonBevel, &opt, &p, this);
+    style()->drawPrimitive (QStyle::PE_PanelButtonCommand, &opt, &p, this);
+    style()->drawItemText (&p, rect(), Qt::AlignCenter, palette(), isEnabled(), currentText());
+    p.end();
+}
+
diff --git a/sdrgui/gui/comboboxnoarrow.h b/sdrgui/gui/comboboxnoarrow.h
new file mode 100644
index 000000000..4974a61be
--- /dev/null
+++ b/sdrgui/gui/comboboxnoarrow.h
@@ -0,0 +1,39 @@
+///////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2018 F4EXB                                                      //
+// written by Edouard Griffiths                                                  //
+//                                                                               //
+// 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 as version 3 of the License, or                  //
+//                                                                               //
+// 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 V3 for more details.                               //
+//                                                                               //
+// You should have received a copy of the GNU General Public License             //
+// along with this program. If not, see <http://www.gnu.org/licenses/>.          //
+///////////////////////////////////////////////////////////////////////////////////
+
+#ifndef SDRGUI_GUI_COMBOBOXNOARROW_H_
+#define SDRGUI_GUI_COMBOBOXNOARROW_H_
+
+#include <QComboBox>
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+/// This class is a custom QComboBox which does NOT display the down arrow. The down arrow takes
+/// a lot of real estate when you're trying to make them narrow. So much real estate that you can't
+/// see short lines of text such as "CH 1" without the digit cut off. The only thing that this
+/// custom widget does is to override the paint function. The new paint function draws the combo
+/// box (using all style sheet info) without the down arrow.
+///////////////////////////////////////////////////////////////////////////////////////////////////
+class ComboBoxNoArrow : public QComboBox
+{
+    Q_OBJECT
+public:
+    ComboBoxNoArrow (QWidget *parent) : QComboBox(parent) {}
+    virtual ~ComboBoxNoArrow() {}
+    void  paintEvent (QPaintEvent *ev);
+};
+
+#endif /* SDRGUI_GUI_COMBOBOXNOARROW_H_ */