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/* Copyright (c) 2011-2012 Stanislaw Halik <sthalik@misaki.pl>
* Adapted to FaceTrackNoIR by Wim Vriend.
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*/
#ifndef QFUNCTIONCONFIGURATOR_H
#define QFUNCTIONCONFIGURATOR_H
#include <QWidget>
#include <QtGui>
#include <QPointF>
#include <QElapsedTimer>
#include "qfunctionconfigurator/functionconfig.h"
#include "ftnoir_tracker_base/ftnoir_tracker_base.h"
//
// The FunctionConfigurator Widget is used to display and configure a function (curve).
// The Function is used by FaceTrackNoIR to 'translate' the actual head-pose to the virtual headpose. Every axis is configured by a separate Function.
//
// The Function is coded in a separate Class and can exists, without the Widget. When the widget is displayed (therefore 'created'), the Function can be attached to the
// Widget and the Widget used to change the Function.
//
class FTNOIR_TRACKER_BASE_EXPORT QFunctionConfigurator : public QWidget
{
Q_OBJECT
Q_PROPERTY(QColor colorBezier READ colorBezier WRITE setColorBezier)
QColor colorBezier() const
{
return colBezier;
}
public:
QFunctionConfigurator(QWidget *parent = 0);
FunctionConfig* config();
void setConfig(FunctionConfig* config, QString settingsFile); // Connect the FunctionConfig to the Widget.
void loadSettings(QString settingsFile); // Load the FunctionConfig (points) from the INI-file
void saveSettings(QString settingsFile); // Save the FunctionConfig (points) to the INI-file
signals:
void CurveChanged(bool);
public slots:
void setColorBezier(QColor);
protected slots:
void paintEvent(QPaintEvent *e);
void mousePressEvent(QMouseEvent *e);
void mouseMoveEvent(QMouseEvent *e);
void mouseReleaseEvent(QMouseEvent *e);
protected:
void drawBackground();
void drawFunction();
void drawPoint(QPainter *painter, const QPointF &pt, QColor colBG );
void drawLine(QPainter *painter, const QPointF &start, const QPointF &end, QPen pen);
bool point_within_pixel(QPointF pt, QPointF pixel) const;
protected:
virtual void resizeEvent(QResizeEvent *);
private:
void update_range() {
if (!_config)
return;
double w = width(), h = height();
const double mwl = 40, mhl = 20;
const double mwr = 15, mhr = 35;
range = QRectF(mwl, mhl, (w - mwl - mwr), (h - mhl - mhr));
c = QPointF(range.width() / _config->maxInput(), range.height() / _config->maxOutput());
}
QRectF range; // The actual rectangle for the Bezier-curve
QPointF lastPoint; // The right-most point of the Function
QPointF pixel_coord_to_point (QPointF point) const; // Convert the graphical Point to a real-life Point
QPointF point_to_pixel (QPointF point) const; // Convert the Point to a graphical Point
int movingPoint;
QElapsedTimer timer;
QPointF c;
QColor colBezier; // Color of Bezier curve
bool _draw_background; // Flag to determine if the background should be (re-)drawn on the QPixmap
QPixmap _background; // Image of the static parts (axis, lines, etc.)
bool _draw_function; // Flag to determine if the function should be (re-)drawn on the QPixmap
QPixmap _function; // Image of the function (static unless edited by the user)
FunctionConfig* _config;
};
#endif // QFUNCTIONCONFIGURATOR_H
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