A very rough first version of the GUI.

19 files changed, 1114 insertions, 6 deletions

diff --git a/plugingui/Makefile.am b/plugingui/Makefile.am
index 2a9d453..83a4411 100644
--- a/plugingui/Makefile.am
+++ b/plugingui/Makefile.am
@@ -37,6 +37,10 @@ nodist_libdggui_la_SOURCES = \
 	toggle.cc \
 	powerbutton.cc \
 	mainwindow.cc \
+	drumkitframecontent.cc \
+	statusframecontent.cc \
+	humanizerframecontent.cc \
+	diskstreamingframecontent.cc \
 	slider.cc \
 	scrollbar.cc \
 	stackedwidget.cc \
@@ -49,6 +53,7 @@ nodist_libdggui_la_SOURCES = \
 	listbox.cc \
 	listboxthin.cc \
 	listboxbasic.cc \
+	maintab.cc \
 	knob.cc \
 	filebrowser.cc \
 	directory.cc \
@@ -60,6 +65,7 @@ nodist_libdggui_la_SOURCES = \
 	verticalline.cc \
 	resource.cc \
 	resource_data.cc \
+	frame.cc \
 	lodepng/lodepng.cpp
 
 if ENABLE_X11
@@ -142,4 +148,4 @@ EXTRA_DIST = \
 	verticalline.h \
 	widget.h \
 	window.h \
-	lodepng/lodepng.h
\ No newline at end of file
+	lodepng/lodepng.h
diff --git a/plugingui/Makefile.mingw32 b/plugingui/Makefile.mingw32
index 7f5b191..39ff2d0 100644
--- a/plugingui/Makefile.mingw32
+++ b/plugingui/Makefile.mingw32
@@ -34,9 +34,17 @@ GUI_SRC = \
 	texturedbox.cc \
 	tabbutton.cc \
 	tabwidget.cc \
+	toggle.cc \
 	listbox.cc \
 	listboxthin.cc \
 	listboxbasic.cc \
+	powerbutton.cc \
+	drumkitframecontent.cc \
+	statusframecontent.cc \
+	humanizerframecontent.cc \
+	diskstreamingframecontent.cc \
+	maintab.cc \
+	frame.cc \
 	knob.cc \
 	filebrowser.cc \
 	directory.cc \
diff --git a/plugingui/checkbox.cc b/plugingui/checkbox.cc
index 499b2c1..0f101ec 100644
--- a/plugingui/checkbox.cc
+++ b/plugingui/checkbox.cc
@@ -42,7 +42,6 @@ CheckBox::CheckBox(Widget* parent)
 void CheckBox::repaintEvent(RepaintEvent* repaintEvent)
 {
 	Painter p(*this);
-
 	p.clear();
 
 	p.drawImage(0, (knob.height() - bg_on.height()) / 2, state ? bg_on : bg_off);
diff --git a/plugingui/diskstreamingframecontent.cc b/plugingui/diskstreamingframecontent.cc
new file mode 100644
index 0000000..0d17aaf
--- /dev/null
+++ b/plugingui/diskstreamingframecontent.cc
@@ -0,0 +1,62 @@
+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ *            diskstreamingframecontent.cc
+ *
+ *  Fri Mar 24 21:50:07 CET 2017
+ *  Copyright 2017 André Nusser
+ *  andre.nusser@googlemail.com
+ ****************************************************************************/
+
+/*
+ *  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 "diskstreamingframecontent.h"
+
+namespace GUI {
+
+DiskstreamingframeContent::DiskstreamingframeContent(Widget* parent)
+	: Widget(parent)
+	, slider_width{250}
+{
+	label_text.setText("Cache limit (max memory usage):");
+	label_text.setAlignment(TextAlignment::center);
+
+	button.setText("Apply"); // TODO connect
+
+	label_size.setText("600 MB"); // TODO connect
+	label_size.setAlignment(TextAlignment::center);
+}
+
+void DiskstreamingframeContent::resize(std::size_t width, std::size_t height)
+{
+	Widget::resize(width, height);
+
+	slider_width = 0.8 * width;
+	button_width = width - slider_width;
+
+	label_text.move(0,0);
+	slider.move(0, 20);
+	button.move(slider_width, 10);
+	label_size.move(0, 40);
+
+	label_text.resize(slider_width, 15);
+	slider.resize(slider_width, 15);
+	button.resize(button_width, 30);
+	label_size.resize(slider_width, 15);
+}
+
+} // GUI::
diff --git a/plugingui/diskstreamingframecontent.h b/plugingui/diskstreamingframecontent.h
new file mode 100644
index 0000000..33afcf8
--- /dev/null
+++ b/plugingui/diskstreamingframecontent.h
@@ -0,0 +1,55 @@
+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ *            diskstreamingframecontent.h
+ *
+ *  Fri Mar 24 21:50:07 CET 2017
+ *  Copyright 2017 André Nusser
+ *  andre.nusser@googlemail.com
+ ****************************************************************************/
+
+/*
+ *  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 "widget.h"
+#include "slider.h"
+#include "label.h"
+#include "button.h"
+
+namespace GUI {
+
+class DiskstreamingframeContent : public Widget
+{
+public:
+	DiskstreamingframeContent(Widget* parent);
+
+	// From Widget
+	virtual void resize(std::size_t width, std::size_t height) override;
+
+private:
+	Label label_text{this};
+	Label label_size{this};
+
+	Slider slider{this};
+	Button button{this};
+
+	std::size_t slider_width;
+	std::size_t button_width;
+};
+
+} // GUI::
diff --git a/plugingui/drumkitframecontent.cc b/plugingui/drumkitframecontent.cc
new file mode 100644
index 0000000..8b2b828
--- /dev/null
+++ b/plugingui/drumkitframecontent.cc
@@ -0,0 +1,73 @@
+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ *            drumkitframecontent.cc
+ *
+ *  Fri Mar 24 21:49:42 CET 2017
+ *  Copyright 2017 André Nusser
+ *  andre.nusser@googlemail.com
+ ****************************************************************************/
+
+/*
+ *  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 "drumkitframecontent.h"
+
+#include "label.h"
+
+namespace GUI {
+
+DrumkitframeContent::DrumkitframeContent(Widget* parent)
+	: Widget(parent)
+{
+	layout.setHAlignment(HAlignment::left);
+
+	drumkitCaption.setText("Drumkit file:");
+	midimapCaption.setText("Midimap file:");
+
+	layout.addItem(&drumkitCaption);
+	layout.addItem(&drumkitFile);
+	layout.addItem(&drumkitFileProgress);
+	layout.addItem(&midimapCaption);
+	layout.addItem(&midimapFile);
+	layout.addItem(&midimapFileProgress);
+
+	// TODO:
+	// CONNECT(&drumkitFile.browseButton, clickNotifier,
+	//         this, &DGWindow::kitBrowseClick);
+	// TODO:
+	// CONNECT(&midimapFile.browseButton, clickNotifier,
+	//         this, &DGWindow::midimapBrowseClick);
+
+	midimapFileProgress.setTotal(2);
+}
+
+void DrumkitframeContent::resize(std::size_t width, std::size_t height)
+{
+	Widget::resize(width, height);
+
+	drumkitCaption.resize(width, 15);
+	drumkitFile.resize(width, 37);
+	drumkitFileProgress.resize(drumkitFile.getLineEditWidth(), 11);
+
+	midimapCaption.resize(width, 15);
+	midimapFile.resize(width, 37);
+	midimapFileProgress.resize(drumkitFile.getLineEditWidth(), 11);
+
+	layout.layout();
+}
+
+} // GUI::
diff --git a/plugingui/drumkitframecontent.h b/plugingui/drumkitframecontent.h
new file mode 100644
index 0000000..b5b929c
--- /dev/null
+++ b/plugingui/drumkitframecontent.h
@@ -0,0 +1,103 @@
+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ *            drumkitframecontent.h
+ *
+ *  Fri Mar 24 21:49:42 CET 2017
+ *  Copyright 2017 André Nusser
+ *  andre.nusser@googlemail.com
+ ****************************************************************************/
+
+/*
+ *  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 "widget.h"
+#include "lineedit.h"
+#include "progressbar.h"
+#include "button.h"
+#include "label.h"
+
+namespace GUI
+{
+
+// TODO: move to own class?
+class File
+	: public Widget
+{
+public:
+	File(Widget* parent)
+		: Widget(parent)
+	{
+		layout.setResizeChildren(false);
+		layout.setVAlignment(VAlignment::center);
+
+		layout.addItem(&lineedit);
+		layout.addItem(&browse_button);
+
+		browse_button.setText("Browse...");
+	}
+
+	// From Widget
+	virtual void resize(std::size_t width, std::size_t height) override
+	{
+		Widget::resize(width, height);
+
+		lineedit_width = 0.8 * width;
+		button_width = width - lineedit_width;
+
+		lineedit.resize(lineedit_width, 29);
+		browse_button.resize(button_width, 41);
+
+		layout.layout();
+	}
+
+	std::size_t getLineEditWidth() { return lineedit_width; }
+	std::size_t getButtonWidth() { return button_width; }
+
+private:
+	HBoxLayout layout{this};
+
+	LineEdit lineedit{this};
+	Button browse_button{this};
+
+	std::size_t lineedit_width;
+	std::size_t button_width;
+
+	LineEdit& getLineEdit() { return lineedit; }
+};
+
+class DrumkitframeContent : public Widget
+{
+public:
+	DrumkitframeContent(Widget* parent);
+
+	// From Widget
+	virtual void resize(std::size_t width, std::size_t height) override;
+
+private:
+	VBoxLayout layout{this};
+
+	Label drumkitCaption{this};
+	Label midimapCaption{this};
+	File drumkitFile{this};
+	File midimapFile{this};
+	ProgressBar drumkitFileProgress{this};
+	ProgressBar midimapFileProgress{this};
+};
+
+} // GUI::
diff --git a/plugingui/frame.cc b/plugingui/frame.cc
new file mode 100644
index 0000000..f34eecf
--- /dev/null
+++ b/plugingui/frame.cc
@@ -0,0 +1,119 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            frame.cc
+ *
+ *  Tue Feb  7 21:07:56 CET 2017
+ *  Copyright 2017 André Nusser
+ *  andre.nusser@googlemail.com
+ ****************************************************************************/
+
+/*
+ *  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 "frame.h"
+
+#include "painter.h"
+
+// TODO: fix all the segfaults
+// TODO: change look to what it is in the fake GUI
+// TODO: replace CheckBox by some other name
+// TODO: maybe refactor the Toggle thingy
+// TODO: make it possible to use layouts recursively
+// TODO: make it possible to add layouts to tabs
+
+namespace GUI
+{
+
+FrameWidget::FrameWidget(Widget *parent, bool has_switch)
+	: Widget(parent)
+	, has_switch(has_switch)
+	, is_switched_on(!has_switch)
+	, bar_height(24)
+{
+	if (has_switch) {
+		// We only have to set this once as nothing happens on a resize
+		power_button.move(4, 4);
+		power_button.resize(16, 16);
+
+		CONNECT(&power_button, stateChangedNotifier, this, &FrameWidget::powerButtonClicked);
+	}
+	power_button.setVisible(has_switch);
+
+	CONNECT(this, sizeChangeNotifier, this, &FrameWidget::sizeChanged);
+}
+
+void FrameWidget::repaintEvent(RepaintEvent* repaintEvent) 
+{
+	Painter p(*this);
+	p.clear();
+
+	int center_x = width() / 2;
+	auto title_buf = title.c_str();
+
+	// draw the dark grey box
+	p.setColour(grey_box_colour);
+	p.drawFilledRectangle(1, 1, width() - 2, bar_height);
+
+	// frame
+	p.setColour(frame_colour);
+	p.drawRectangle(0, 0, width() - 1, height() - 1);
+
+	// background
+	p.setColour(background_colour);
+	p.drawFilledRectangle(1, bar_height, width() - 2, height() - 2);
+
+	// draw the label
+	p.setColour(label_colour);
+	p.drawText(center_x - label_width, bar_height - 4, font, title_buf);
+}
+
+void FrameWidget::powerButtonClicked(bool clicked)
+{
+	is_switched_on = !is_switched_on;
+
+	if (content) {
+		content->setVisible(true);
+	}
+}
+
+void FrameWidget::setTitle(std::string const& title)
+{
+	this->title = title;
+	label_width = font.textWidth(title.c_str()) / 2 + 1;
+}
+
+void FrameWidget::setContent(Widget* content)
+{
+	this->content = content;
+	content->reparent(this);
+	content->setVisible(true);
+}
+
+void FrameWidget::sizeChanged(int width, int height)
+{
+	if (content) {
+		content_start_x = content_margin;
+		content_start_y = bar_height + content_margin;
+		content_width = width - 2*content_margin;
+		content_height = height - (bar_height + 2*content_margin);
+
+		content->move(content_start_x, content_start_y);
+		content->resize(content_width, content_height);
+	}
+}
+
+} // GUI::
diff --git a/plugingui/frame.h b/plugingui/frame.h
new file mode 100644
index 0000000..1e900ee
--- /dev/null
+++ b/plugingui/frame.h
@@ -0,0 +1,95 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            frame.h
+ *
+ *  Tue Feb  7 21:07:56 CET 2017
+ *  Copyright 2017 André Nusser
+ *  andre.nusser@googlemail.com
+ ****************************************************************************/
+
+/*
+ *  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 "widget.h"
+#include "font.h"
+#include "powerbutton.h"
+
+namespace GUI {
+
+class FrameWidget : public Widget {
+public:
+	FrameWidget(Widget* parent, bool has_switch = false);
+	virtual ~FrameWidget() = default;
+
+	// From Widget:
+	virtual bool isFocusable() override { return false; }
+	virtual bool catchMouse() override { return false; }
+
+	bool isSwitchedOn() { return is_switched_on; }
+	void setTitle(std::string const& title);
+	void setContent(Widget* content);
+
+protected:
+	// From Widget:
+	virtual void repaintEvent(RepaintEvent* repaintEvent) override;
+
+	//! Callback for Widget::sizeChangeNotifier
+	void sizeChanged(int width, int height);
+
+private:
+	//
+	// upper bar
+	//
+
+	// label
+	Font font;
+	std::string title;
+	GUI::Colour label_colour{0.1};
+	std::size_t label_width;
+
+	// switch
+	bool has_switch;
+	bool is_switched_on;
+	PowerButton power_button{this};
+
+	void powerButtonClicked(bool clicked);
+
+	// grey box
+	std::size_t bar_height;
+	GUI::Colour grey_box_colour{0.7};
+	GUI::Colour background_colour{0.85, 0.8};
+	
+	//
+	// content
+	//
+
+	// content frame
+	GUI::Colour frame_colour{0};
+	
+	// content box
+	Widget* content{nullptr};
+	std::size_t content_margin{5};
+
+	std::size_t content_start_x;
+	std::size_t content_start_y;
+	std::size_t content_width;
+	std::size_t content_height;
+};
+
+} // GUI::
diff --git a/plugingui/humanizerframecontent.cc b/plugingui/humanizerframecontent.cc
new file mode 100644
index 0000000..aaa1167
--- /dev/null
+++ b/plugingui/humanizerframecontent.cc
@@ -0,0 +1,61 @@
+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ *            humanizerframecontent.cc
+ *
+ *  Fri Mar 24 21:49:58 CET 2017
+ *  Copyright 2017 André Nusser
+ *  andre.nusser@googlemail.com
+ ****************************************************************************/
+
+/*
+ *  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 "humanizerframecontent.h"
+
+#include "painter.h"
+
+namespace GUI {
+
+HumanizerframeContent::HumanizerframeContent(Widget* parent)
+	: Widget(parent)
+{
+	// FIXME, is resizeChildren broken?
+	layout.setResizeChildren(true);
+	layout.setVAlignment(VAlignment::center);
+
+	attack.resize(80, 80);
+	attackKnob.resize(60, 60);
+	attack.setControl(&attackKnob);
+	layout.addItem(&attack);
+
+	falloff.resize(80, 80);
+	falloffKnob.resize(60, 60);
+	falloff.setControl(&falloffKnob);
+	layout.addItem(&falloff);
+
+	// TODO: connect the knobs to the right functions
+	// CONNECT(&humanizeControls->velocityCheck, stateChangedNotifier,
+	//         this, &DGWindow::velocityCheckClick);
+	// 
+	// CONNECT(&humanizeControls->attackKnob, valueChangedNotifier,
+	//         this, &DGWindow::attackValueChanged);
+	// 
+	// CONNECT(&humanizeControls->falloffKnob, valueChangedNotifier,
+	//         this, &DGWindow::falloffValueChanged);
+}
+
+} // GUI::
diff --git a/plugingui/humanizerframecontent.h b/plugingui/humanizerframecontent.h
new file mode 100644
index 0000000..29f76ab
--- /dev/null
+++ b/plugingui/humanizerframecontent.h
@@ -0,0 +1,77 @@
+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ *            humanizerframecontent.h
+ *
+ *  Fri Mar 24 21:49:58 CET 2017
+ *  Copyright 2017 André Nusser
+ *  andre.nusser@googlemail.com
+ ****************************************************************************/
+
+/*
+ *  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 "widget.h"
+#include "knob.h"
+#include "label.h"
+
+namespace GUI {
+
+// TODO move this to an own file?
+class LabeledControl
+	: public Widget
+{
+public:
+	LabeledControl(Widget* parent, const std::string& name)
+		: Widget(parent)
+	{
+		layout.setResizeChildren(false);
+		layout.setHAlignment(HAlignment::center);
+
+		caption.setText(name);
+		caption.resize(100, 20);
+		caption.setAlignment(TextAlignment::center);
+		layout.addItem(&caption);
+	}
+
+	void setControl(Widget* control)
+	{
+		layout.addItem(control);
+	}
+
+	VBoxLayout layout{this};
+
+	Label caption{this};
+};
+
+class HumanizerframeContent : public Widget
+{
+public:
+	HumanizerframeContent(Widget* parent);
+
+private:
+	HBoxLayout layout{this};
+
+	LabeledControl attack{this, "Attack"};
+	LabeledControl falloff{this, "Release"};
+
+	Knob attackKnob{&attack};
+	Knob falloffKnob{&falloff};
+};
+
+} // GUI::
diff --git a/plugingui/maintab.cc b/plugingui/maintab.cc
new file mode 100644
index 0000000..b6dc448
--- /dev/null
+++ b/plugingui/maintab.cc
@@ -0,0 +1,54 @@
+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ *            maintab.cc
+ *
+ *  Fri Mar 24 20:39:59 CET 2017
+ *  Copyright 2017 André Nusser
+ *  andre.nusser@googlemail.com
+ ****************************************************************************/
+
+/*
+ *  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 "maintab.h"
+
+namespace GUI {
+
+MainTab::MainTab(Widget* parent)
+	: Widget(parent)
+{
+	layout.setSpacing(10);
+	layout.setResizeChildren(true);
+	layout.setHAlignment(GUI::HAlignment::center);
+
+	layout.addItem(&drumkit_frame);
+	layout.addItem(&status_frame);
+	layout.addItem(&humanizer_frame);
+	layout.addItem(&diskstreaming_frame);
+
+	drumkit_frame.setTitle("Drumkit");
+	status_frame.setTitle("Status");
+	humanizer_frame.setTitle("Humanizer");
+	diskstreaming_frame.setTitle("Disk streaming");
+
+	drumkit_frame.setContent(&drumkitframe_content);
+	status_frame.setContent(&statusframe_content);
+	humanizer_frame.setContent(&humanizerframe_content);
+	diskstreaming_frame.setContent(&diskstreamingframe_content);
+}
+
+} // GUI::
diff --git a/plugingui/maintab.h b/plugingui/maintab.h
new file mode 100644
index 0000000..1ab30d7
--- /dev/null
+++ b/plugingui/maintab.h
@@ -0,0 +1,58 @@
+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ *            maintab.h
+ *
+ *  Fri Mar 24 20:39:59 CET 2017
+ *  Copyright 2017 André Nusser
+ *  andre.nusser@googlemail.com
+ ****************************************************************************/
+
+/*
+ *  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 "widget.h"
+#include "layout.h"
+#include "frame.h"
+#include "drumkitframecontent.h"
+#include "statusframecontent.h"
+#include "humanizerframecontent.h"
+#include "diskstreamingframecontent.h"
+
+namespace GUI {
+
+class MainTab : public Widget
+{
+public:
+	MainTab(Widget* parent);
+
+private:
+	VBoxLayout layout{this};
+
+	FrameWidget drumkit_frame{this, false};
+	FrameWidget status_frame{this, false};
+	FrameWidget humanizer_frame{this, true};
+	FrameWidget diskstreaming_frame{this, true};
+
+	DrumkitframeContent drumkitframe_content{this};
+	StatusframeContent statusframe_content{this};
+	HumanizerframeContent humanizerframe_content{this};
+	DiskstreamingframeContent diskstreamingframe_content{this};
+};
+
+} // GUI::
diff --git a/plugingui/mainwindow.cc b/plugingui/mainwindow.cc
index 3b951f5..51fd3a3 100644
--- a/plugingui/mainwindow.cc
+++ b/plugingui/mainwindow.cc
@@ -30,6 +30,31 @@
 
 #include "painter.h"
 
+#include <string>
+
+namespace
+{
+
+std::string getGPLText()
+{
+	return
+		"DrumGizmo is free software; you can redistribute it and/or modify\n"
+		"it under the terms of the GNU Lesser General Public License as published by\n"
+		"the Free Software Foundation; either version 3 of the License, or\n"
+		"(at your option) any later version.\n"
+		"\n"
+		"DrumGizmo is distributed in the hope that it will be useful,\n"
+		"but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
+		"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
+		"GNU Lesser General Public License for more details.\n"
+		"\n"
+		"You should have received a copy of the GNU Lesser General Public License\n"
+		"along with DrumGizmo; if not, write to the Free Software\n"
+		"Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.\n";
+}
+
+} // anonymous namespace
+
 namespace GUI
 {
 
@@ -39,8 +64,19 @@ MainWindow::MainWindow(Settings& settings, void* native_window)
 {
 	CONNECT(this, sizeChangeNotifier, this, &MainWindow::sizeChanged);
 	CONNECT(eventHandler(), closeNotifier, this, &MainWindow::closeEventHandler);
-	tabs.move(16, 0); // x-offset to make room for the left side bar.
+
+	// TODO: use fixed size?
+	// setFixedSize(450, 600);
 	setCaption("DrumGizmo v" VERSION);
+
+	tabs.move(16, 0); // x-offset to make room for the left side bar.
+
+	tabs.addTab("Main", &main_tab);
+	tabs.addTab("GPL", &gpl_text_field);
+
+	gpl_text_field.setText(getGPLText());
+	gpl_text_field.preprocessText();
+	gpl_text_field.setReadOnly(true);
 }
 
 bool MainWindow::processEvents()
diff --git a/plugingui/mainwindow.h b/plugingui/mainwindow.h
index 886dc3e..89e323a 100644
--- a/plugingui/mainwindow.h
+++ b/plugingui/mainwindow.h
@@ -28,10 +28,13 @@
 
 #include <settings.h>
 
-#include "window.h"
+#include "frame.h"
+#include "image.h"
+#include "textedit.h"
 #include "tabwidget.h"
 #include "texturedbox.h"
-#include "image.h"
+#include "window.h"
+#include "maintab.h"
 
 namespace GUI
 {
@@ -57,6 +60,10 @@ private:
 	void repaintEvent(RepaintEvent* repaintEvent) override final;
 
 	TabWidget tabs{this};
+	
+	MainTab main_tab{this};
+	// TODO use some nice textfield widget here
+	TextEdit gpl_text_field{&tabs};
 
 	Image back{":bg.png"};
 	Image logo{":logo.png"};
diff --git a/plugingui/statusframecontent.cc b/plugingui/statusframecontent.cc
new file mode 100644
index 0000000..2f87dec
--- /dev/null
+++ b/plugingui/statusframecontent.cc
@@ -0,0 +1,46 @@
+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ *            statusframecontent.cc
+ *
+ *  Fri Mar 24 21:49:50 CET 2017
+ *  Copyright 2017 André Nusser
+ *  andre.nusser@googlemail.com
+ ****************************************************************************/
+
+/*
+ *  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 "statusframecontent.h"
+
+namespace GUI {
+
+StatusframeContent::StatusframeContent(Widget* parent)
+	: Widget(parent)
+{
+	text_field.move(0, 0);
+	text_field.setText("This is a status message.");
+	text_field.setReadOnly(true);
+	text_field.show();
+}
+
+void StatusframeContent::resize(std::size_t width, std::size_t height)
+{
+	Widget::resize(width, height);
+	text_field.resize(width, height);
+}
+
+} // GUI::
diff --git a/plugingui/statusframecontent.h b/plugingui/statusframecontent.h
new file mode 100644
index 0000000..c61f716
--- /dev/null
+++ b/plugingui/statusframecontent.h
@@ -0,0 +1,46 @@
+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ *            statusframecontent.h
+ *
+ *  Fri Mar 24 21:49:50 CET 2017
+ *  Copyright 2017 André Nusser
+ *  andre.nusser@googlemail.com
+ ****************************************************************************/
+
+/*
+ *  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 "widget.h"
+#include "textedit.h"
+
+namespace GUI {
+
+class StatusframeContent : public Widget
+{
+public:
+	StatusframeContent(Widget* parent);
+
+	// From Widget
+	virtual void resize(std::size_t width, std::size_t height) override;
+
+private:
+	TextEdit text_field{this};
+};
+
+} // GUI::
diff --git a/plugingui/tests/Makefile.am b/plugingui/tests/Makefile.am
index 8af96ee..28c5cfa 100644
--- a/plugingui/tests/Makefile.am
+++ b/plugingui/tests/Makefile.am
@@ -1,4 +1,4 @@
-noinst_PROGRAMS = resizetest tabwidgettest dgwindowtest
+noinst_PROGRAMS = resizetest tabwidgettest dgwindowtest framewidgettest
 
 resizetest_LDADD = $(top_srcdir)/plugingui/libdggui.la
 resizetest_CXXFLAGS = \
@@ -28,3 +28,12 @@ dgwindowtest_CXXFLAGS = \
 dgwindowtest_SOURCES = \
 	dgwindowtest.cc \
 	$(top_srcdir)/hugin/hugin.c
+
+framewidgettest_LDADD = $(top_srcdir)/plugingui/libdggui.la
+framewidgettest_CXXFLAGS = \
+	-I$(top_srcdir)/plugingui \
+	-I$(top_srcdir)/src \
+	-I$(top_srcdir)/hugin
+framewidgettest_SOURCES = \
+	framewidgettest.cc \
+	$(top_srcdir)/hugin/hugin.c
diff --git a/plugingui/tests/framewidgettest.cc b/plugingui/tests/framewidgettest.cc
new file mode 100644
index 0000000..38656b7
--- /dev/null
+++ b/plugingui/tests/framewidgettest.cc
@@ -0,0 +1,194 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            framewidgettest.cc
+ *
+ *  Sat Feb 11 23:36:04 CET 2017
+ *  Copyright 2017 André Nusser
+ *  andre.nusser@googlemail.com
+ ****************************************************************************/
+
+/*
+ *  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 <iostream>
+
+#ifdef WIN32
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#endif
+#include <unistd.h>
+
+#include <hugin.hpp>
+#include <window.h>
+#include <frame.h>
+#include <label.h>
+#include <layout.h>
+#include <button.h>
+#include <checkbox.h>
+
+// TODO: fix segfault on close
+
+class Widget1
+	: public GUI::Widget
+{
+public:
+	Widget1(GUI::Widget* parent)
+		: GUI::Widget(parent)
+	{
+		layout.setResizeChildren(true);
+		layout.setHAlignment(GUI::HAlignment::center);
+
+		label1.setText("Label1");
+		label1.setAlignment(GUI::TextAlignment::left);
+		layout.addItem(&label1);
+
+		label2.setText("Label2");
+		label2.setAlignment(GUI::TextAlignment::center);
+		layout.addItem(&label2);
+
+		label3.setText("Label3");
+		label3.setAlignment(GUI::TextAlignment::right);
+		layout.addItem(&label3);
+	}
+
+private:
+	GUI::VBoxLayout layout{this};
+	GUI::Label label1{this};
+	GUI::Label label2{this};
+	GUI::Label label3{this};
+};
+
+class Widget2
+	: public GUI::Widget
+{
+public:
+	Widget2(GUI::Widget* parent)
+		: GUI::Widget(parent)
+	{
+		layout.setSpacing(10);
+		layout.setResizeChildren(true);
+		layout.setVAlignment(GUI::VAlignment::top);
+
+		label1.setText("Label1");
+		label1.setAlignment(GUI::TextAlignment::right);
+		layout.addItem(&label1);
+
+		label2.setText("Label2");
+		label2.setAlignment(GUI::TextAlignment::left);
+		layout.addItem(&label2);
+
+		layout.addItem(&checkbox);
+	}
+
+private:
+	GUI::HBoxLayout layout{this};
+	GUI::Label label1{this};
+	GUI::Label label2{this};
+	GUI::CheckBox checkbox{this};
+};
+
+class TestWindow
+	: public GUI::Window
+{
+public:
+	TestWindow()
+		: GUI::Window(nullptr)
+	{
+		setCaption("FrameWidgetTest Window");
+		CONNECT(eventHandler(), closeNotifier,
+		        this, &TestWindow::closeEventHandler);
+		CONNECT(this, sizeChangeNotifier, this, &TestWindow::sizeChanged);
+
+		layout.setSpacing(10);
+		layout.setResizeChildren(true);
+		layout.setHAlignment(GUI::HAlignment::center);
+
+		layout.addItem(&frame1);
+		layout.addItem(&frame2);
+		layout.addItem(&frame3);
+		layout.addItem(&frame4);
+
+		frame1.setTitle("Frame 1 Title");
+		frame2.setTitle("Frame 2 Title");
+		frame3.setTitle("Frame 3 Title");
+		frame4.setTitle("Frame 4 Title");
+
+		frame1.setContent(&w1_1);
+		frame2.setContent(&w1_2);
+		frame3.setContent(&w2_1);
+		frame4.setContent(&w2_2);
+	}
+
+	void sizeChanged(std::size_t width, std::size_t height)
+	{
+		// TODO: Do we have to do anything here?
+	}
+
+	void closeEventHandler()
+	{
+		closing = true;
+	}
+
+	bool processEvents()
+	{
+		eventHandler()->processEvents();
+		return !closing;
+	}
+
+	void repaintEvent(GUI::RepaintEvent* repaintEvent) override
+	{
+		GUI::Painter painter(*this);
+		painter.setColour(GUI::Colour(0.85));
+		painter.drawFilledRectangle(0, 0, width() - 1, height() - 1);
+	}
+
+private:
+	bool closing{false};
+
+	GUI::VBoxLayout layout{this};
+
+	GUI::FrameWidget frame1{this, true};
+	GUI::FrameWidget frame2{this, false};
+	GUI::FrameWidget frame3{this, true};
+	GUI::FrameWidget frame4{this, false};
+
+	Widget1 w1_1{this};
+	Widget1 w1_2{this};
+
+	Widget2 w2_1{this};
+	Widget2 w2_2{this};
+};
+
+int main()
+{
+	INFO(example, "We are up and running");
+
+	TestWindow test_window;
+	test_window.show();
+	test_window.resize(300,300);
+
+	while(test_window.processEvents())
+	{
+#ifdef WIN32
+		SleepEx(50, FALSE);
+#else
+		usleep(50000);
+#endif
+	}
+
+	return 0;
+}