/* ASEPRITE
 * Copyright (C) 2001-2012  David Capello
 *
 * 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; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef COMMANDS_FILTERS_COLOR_CURVE_EDITOR_H_INCLUDED
#define COMMANDS_FILTERS_COLOR_CURVE_EDITOR_H_INCLUDED

#include "base/compiler_specific.h"
#include "base/signal.h"
#include "gfx/point.h"
#include "ui/widget.h"

class ColorCurve;

class ColorCurveEditor : public ui::Widget
{
public:
  ColorCurveEditor(ColorCurve* curve, int x1, int y1, int x2, int y2);

  ColorCurve* getCurve() const { return m_curve; }

  Signal0<void> CurveEditorChange;

protected:
  bool onProcessMessage(ui::Message* msg) OVERRIDE;

private:
  gfx::Point* getClosestPoint(int x, int y, int** edit_x, int** edit_y);
  int editNodeManually(gfx::Point& point);

  ColorCurve* m_curve;
  int m_x1, m_y1;
  int m_x2, m_y2;
  int m_status;
  gfx::Point* m_editPoint;
  int* m_editX;
  int* m_editY;
};

#endif
