Added StackedWidget.

3 files changed, 164 insertions, 0 deletions

diff --git a/plugingui/Makefile.am.plugingui b/plugingui/Makefile.am.plugingui
index 1f921cf..eb3b96d 100644
--- a/plugingui/Makefile.am.plugingui
+++ b/plugingui/Makefile.am.plugingui
@@ -18,6 +18,7 @@ PLUGIN_GUI_SOURCES = \
 	$(top_srcdir)/plugingui/checkbox.cc \
 	$(top_srcdir)/plugingui/slider.cc \
 	$(top_srcdir)/plugingui/scrollbar.cc \
+	$(top_srcdir)/plugingui/stackedwidget.cc \
 	$(top_srcdir)/plugingui/textedit.cc \
 	$(top_srcdir)/plugingui/texture.cc \
 	$(top_srcdir)/plugingui/texturedbox.cc \
diff --git a/plugingui/stackedwidget.cc b/plugingui/stackedwidget.cc
new file mode 100644
index 0000000..77f0f58
--- /dev/null
+++ b/plugingui/stackedwidget.cc
@@ -0,0 +1,94 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            stackedwidget.cc
+ *
+ *  Mon Nov 21 19:36:49 CET 2016
+ *  Copyright 2016 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo 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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo 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 DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "stackedwidget.h"
+
+namespace GUI
+{
+
+StackedWidget::StackedWidget(Widget *parent)
+	: Widget(parent)
+{
+}
+
+StackedWidget::~StackedWidget()
+{
+}
+
+void StackedWidget::addWidget(Widget *widget)
+{
+	widgets.push_back(widget);
+
+	if(currentWidget == nullptr)
+	{
+		setCurrentWidget(widget);
+	}
+	else
+	{
+		widget->setVisible(false);
+	}
+}
+
+void StackedWidget::removeWidget(Widget *widget)
+{
+	if(widget == currentWidget)
+	{
+		setCurrentWidget(nullptr);
+	}
+
+	widgets.remove(widget);
+}
+
+Widget *StackedWidget::getCurrentWidget() const
+{
+	return currentWidget;
+}
+
+void StackedWidget::setCurrentWidget(Widget *widget)
+{
+	if(widget == currentWidget)
+	{
+		return;
+	}
+
+	if(currentWidget)
+	{
+		currentWidget->setVisible(false);
+	}
+
+	currentWidget = widget;
+
+	if(currentWidget)
+	{
+		currentWidget->move(0, 0);
+		currentWidget->resize(width(), height());
+		currentWidget->setVisible(true);
+	}
+
+	currentChanged(currentWidget);
+}
+
+} // GUI::
diff --git a/plugingui/stackedwidget.h b/plugingui/stackedwidget.h
new file mode 100644
index 0000000..903aa17
--- /dev/null
+++ b/plugingui/stackedwidget.h
@@ -0,0 +1,69 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            stackedwidget.h
+ *
+ *  Mon Nov 21 19:36:49 CET 2016
+ *  Copyright 2016 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo 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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo 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 DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#pragma once
+
+#include <list>
+
+#include "widget.h"
+#include "notifier.h"
+
+namespace GUI
+{
+
+//! A StackedWidget is a widget containing a list of widgets but only showing
+//! one of them at a time.
+//! It is be used to implement a TabWidget but can also be used for other
+//! purposes.
+class StackedWidget
+	: public Widget
+{
+public:
+	StackedWidget(Widget *parent);
+	~StackedWidget();
+
+	//! Add a widget to the stack.
+	void addWidget(Widget *widget);
+
+	//! Remove a widget from the stack.
+	void removeWidget(Widget *widget);
+
+	//! Get currently visible widget.
+	Widget *getCurrentWidget() const;
+
+	//! Show widget. Hide all the others.
+	//! If widget is not in the stack nothing happens.
+	void setCurrentWidget(Widget *widget);
+
+	//! Reports whn a new widget is shown.
+	Notifier<Widget*> currentChanged;
+
+private:
+	Widget* currentWidget{nullptr};
+	std::list<Widget*> widgets;
+};
+
+} // GUI::