1 files changed, 132 insertions, 0 deletions
diff --git a/dggui/tabbutton.cc b/dggui/tabbutton.cc
new file mode 100644
index 0000000..6a27f61
--- /dev/null
+++ b/dggui/tabbutton.cc
@@ -0,0 +1,132 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            tabbutton.cc
+ *
+ *  Thu Nov 24 18:52:26 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 "tabbutton.h"
+
+#include "painter.h"
+
+namespace GUI
+{
+
+static TabID getNextTabID()
+{
+	static TabID next{0};
+	next++;
+	return next;
+}
+
+TabButton::TabButton(Widget* parent, Widget* tab_widget)
+	: ButtonBase(parent)
+	, tab_widget(tab_widget)
+{
+	tab_id = getNextTabID();
+	CONNECT(this, clickNotifier, this, &TabButton::clickHandler);
+}
+
+TabButton::~TabButton()
+{
+}
+
+Widget* TabButton::getTabWidget()
+{
+	return tab_widget;
+}
+
+std::size_t TabButton::getMinimalWidth() const
+{
+	std::size_t padding = 15;
+	auto font_width = font.textWidth(text);
+
+	return font_width + padding;
+}
+
+std::size_t TabButton::getMinimalHeight() const
+{
+	std::size_t padding = 10;
+	auto font_height= font.textHeight(text);
+
+	return font_height + padding;
+}
+
+void TabButton::setActive(bool active)
+{
+	this->active = active;
+
+	if (active) {
+		draw_state = State::Down;
+	}
+	else {
+		draw_state = State::Up;
+	}
+
+	redraw();
+}
+
+TabID TabButton::getID() const
+{
+	return tab_id;
+}
+
+void TabButton::repaintEvent(RepaintEvent* e)
+{
+	Painter p(*this);
+
+	int padTop = 3;
+	int padLeft = 0;
+	int padTextTop = 3;
+
+	int w = width();
+	int h = height();
+	if(w == 0 || h == 0)
+	{
+		return;
+	}
+
+	if (draw_state == State::Up && !active) {
+		tab_passive.setSize(w - padLeft, h - padTop);
+		p.drawImage(padLeft, padTop, tab_passive);
+	}
+	else {
+		tab_active.setSize(w - padLeft, h - padTop);
+		p.drawImage(padLeft, padTop, tab_active);
+	}
+
+	auto x = padLeft + (width() - font.textWidth(text)) / 2;
+	auto y = padTop + padTextTop + font.textHeight(text);
+	p.drawText(x, y, font, text, true);
+}
+
+void TabButton::scrollEvent(ScrollEvent* scroll_event)
+{
+	scrollNotifier(scroll_event->delta);
+}
+
+void TabButton::clickHandler()
+{
+	switchTabNotifier(tab_widget);
+}
+
+} // GUI::