// Copyright 2005-2019 The Mumble Developers. All rights reserved.
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file at the root of the
// Mumble source tree or at <https://www.mumble.info/LICENSE>.

#ifndef MUMBLE_MUMBLE_OVERLAYTEXT_H_
#define MUMBLE_MUMBLE_OVERLAYTEXT_H_

#include <QtGui/QPixmap>
#include <QtGui/QFont>

//! Annotated QPixmap supplying a basepoint.
class BasepointPixmap : public QPixmap {
	public:
		//! Local coordinates of the base point.
		QPoint qpBasePoint;
		//@{
		/**
		 * Font ascent and descent.
		 * The pixmap may exceed those font metrics, so if you need to
		 * transform rendered text properly, use these attributes.
		 */
		int iAscent;
		int iDescent;
		//@}

		BasepointPixmap();
		//! Create from QPixmap, basepoint is bottom left.
		BasepointPixmap(const QPixmap&);
		//! Empty pixmap, basepoint is bottom left.
		BasepointPixmap(int, int);
		//! Empty pixmap with specified basepoint.
		BasepointPixmap(int, int, const QPoint&);
};

class OverlayTextLine {
	private:
		const float fEdgeFactor;

		QString qsText;
		QFont qfFont;
		QPainterPath qpp;
		float fAscent, fDescent;
		float fXCorrection, fYCorrection;
		int iCurWidth, iCurHeight;
		float fEdge;
		float fBaseliningThreshold;
		bool bElided;

		BasepointPixmap render(int, int, const QColor&, const QPoint&) const;
	public:
		OverlayTextLine(const QString&, const QFont&);

		void setFont(const QFont&);
		void setEdge(float);

		//! Render text with current font.
		BasepointPixmap createPixmap(QColor col);
		//! Render text to fit a bounding box.
		BasepointPixmap createPixmap(unsigned int maxwidth, unsigned int height, QColor col);
};

#endif //_OVERLAYTEXT_H
