#pragma once

#ifndef PICK_RGB_UTILS_H

#define PICK_RGB_UTILS_H

#include "tcommon.h"

#include <qrect></qrect>

#include <qrgb></qrgb>

#undef DVAPI

#undef DVVAR

#ifdef TOONZQT_EXPORTS

#define DVAPI DV_EXPORT_API

#define DVVAR DV_EXPORT_VAR

#else

#define DVAPI DV_IMPORT_API

#define DVVAR DV_IMPORT_VAR

#endif

//-------------------------------------------------------------------------------

//  Forward declarations

class QWidget;

class QOpenGLWidget;

//-------------------------------------------------------------------------------

//! Returns the average color displayed in a widget across the specified rect.

/*! This function reads the widget's frame buffer content on given rect, and

returns

    a mean of its pixels. The widget's background color is assumed outside the

    widget bounds.

\warning Use this function only on plain widgets - in case your widget inherits

         QOpenGLWidget, invoke the overloaded function accepting a

QOpenGLWidget* type

         instead.

*/

QRgb DVAPI pickRGB(QWidget *widget, const QRect &rect);

inline QRgb pickRGB(QWidget *widget, const QPoint &pos) {

  return pickRGB(widget, QRect(pos.x(), pos.y(), 1, 1));

}

//! Returns the average color displayed in a QOpenGLWidget instance across the

//! specified rect.

/*! This function reads the widget's front frame buffer on given rect, and

returns

    a mean of its pixels.

\warning Pixel colors are undefined outside the widget's geometry.

*/

QRgb DVAPI pickRGB(QOpenGLWidget *widget, const QRect &rect);

inline QRgb pickRGB(QOpenGLWidget *widget, const QPoint &pos) {

  return pickRGB(widget, QRect(pos.x(), pos.y(), 1, 1));

}

//! Returns the average color displayed on screen across the specified rect.

/*! This function reads the screen's buffer on given rect, and returns

    a mean of its pixels.

\warning In general, grabbing an area outside the screen is not safe.

         This depends on the underlying window system.

*/

QRgb DVAPI pickScreenRGB(const QRect &rect);

inline QRgb pickScreenRGB(const QPoint &pos) {

  return pickScreenRGB(QRect(pos.x(), pos.y(), 1, 1));

}

#endif  // PICK_RGB_UTILS_H