#ifndef VISUALIZATIONWIEW_H
#define VISUALIZATIONWIEW_H

#include <QWidget>

class QTimer;
class Sheet;

/// Widget that paints the state of the heat surface
class VisualizationWiew : public QWidget
{
	Q_OBJECT
	Q_DISABLE_COPY(VisualizationWiew)

  protected:
	/// Updates the interfaz each refresh time
	QTimer* refreshTimer = nullptr;
	/// The simulation data source
	Sheet* sheet = nullptr;

  public:
	/// Constructor
	explicit VisualizationWiew(QWidget* parent = nullptr);
	/// Get access to the sheet
	inline Sheet* getSheet() { return this->sheet; }

  signals:
	/// Emitted each time the visualization is updated
	void refreshed();

  public slots:
	/// Set the refresh rate as a text for easy signal-slot connection
	void setRefreshRateText(const QString& millisecondsText);
	/// Set the refresh rate
	void setRefreshRate(int milliseconds);
	/// Set the data source
	void setSheet(Sheet* sheet);
	/// Start refreshing the interface
	/// @param epsilon The simulation will stop when all temperature changes
	/// will be less than this value
	void start(double epsilon);
	/// Stop refreshing the interface
	void stop();

  protected:
	/// Called each time the window is refreshed
	virtual void paintEvent(QPaintEvent *event) override;
};

#endif // VISUALIZATIONWIEW_H