/*
 * TabWidget.h - LMMS-tabwidget
 *
 * Copyright (c) 2005-2008 Tobias Doerffel <tobydox/at/users.sourceforge.net>
 *
 * This file is part of LMMS - https://lmms.io
 *
 * 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; either
 * version 2 of the License, or (at your option) any later version.
 *
 * 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 (see COPYING); if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301 USA.
 *
 */


#ifndef TAB_WIDGET_H
#define TAB_WIDGET_H

#include <QWidget>
#include <QtCore/QMap>

const int TEXT_TAB_HEIGHT = 14;
const int GRAPHIC_TAB_HEIGHT = 17;

class TabWidget : public QWidget
{
	Q_OBJECT
public:
	//! @param resizable If true, the widget resizes to fit the size of all tabs
	//!   If false, all child widget will be cut down to the TabWidget's size
	TabWidget( const QString & _caption, QWidget * _parent,
				bool usePixmap = false, bool resizable = false );
	virtual ~TabWidget() = default;

	void addTab( QWidget * w, const QString & name, const char *pixmap = nullptr, int idx = -1 );

	void setActiveTab( int idx );

	int findTabAtPos( const QPoint *pos );

	inline int activeTab() const
	{
		return( m_activeTab );
	}

	// Themeability
	Q_PROPERTY( QColor tabText READ tabText WRITE setTabText)
	Q_PROPERTY( QColor tabTitleText READ tabTitleText WRITE setTabTitleText)
	Q_PROPERTY( QColor tabSelected READ tabSelected WRITE setTabSelected)
	Q_PROPERTY( QColor tabBackground READ tabBackground WRITE setTabBackground)
	Q_PROPERTY( QColor tabBorder READ tabBorder WRITE setTabBorder)

	QColor tabText() const;
	void setTabText( const QColor & c );
	QColor tabTitleText() const;
	void setTabTitleText( const QColor & c );
	QColor tabSelected() const;
	void setTabSelected( const QColor & c );
	QColor tabBackground() const;
	void setTabBackground( const QColor & c );
	QColor tabBorder() const;
	void setTabBorder( const QColor & c );

protected:
	bool event( QEvent * event ) override;
	void mousePressEvent( QMouseEvent * _me ) override;
	void paintEvent( QPaintEvent * _pe ) override;
	void resizeEvent( QResizeEvent * _re ) override;
	void wheelEvent( QWheelEvent * _we ) override;
	QSize minimumSizeHint() const override;
	QSize sizeHint() const override;

private:
	struct widgetDesc
	{
		QWidget * w;         // ptr to widget
		const char * pixmap; // artwork for the widget
		QString name;        // name for widget
		int nwidth;          // width of name when painting (only valid for text tab)
	} ;
	typedef QMap<int, widgetDesc> widgetStack;

	widgetStack m_widgets;

	bool	m_resizable;
	int 	m_activeTab;
	QString m_caption;      // Tab caption, used as the tooltip text on icon tabs
	quint8 	m_tabbarHeight; // The height of the tab bar
	quint8 	m_tabheight;    // The height of the tabs
	bool	m_usePixmap;      // true if the tabs are to be displayed with icons. False for text tabs.

	QColor m_tabText;       // The color of the tabs' text.
	QColor m_tabTitleText;  // The color of the TabWidget's title text.
	QColor m_tabSelected;   // The highlighting color for the selected tab.
	QColor m_tabBackground; // The TabWidget's background color.
	QColor m_tabBorder;     // The TabWidget's borders color.
} ;

#endif
