/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
 *            canvas.h
 *
 *  Tue Nov 10 08:37:37 CET 2009
 *  Copyright 2009 Bent Bisballe Nyeng
 *  deva@aasimon.org
 ****************************************************************************/

/*
 *  This file is part of DrumGizmo.
 *
 *  DrumGizmo 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.
 *
 *  DrumGizmo 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 DrumGizmo; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
 */
#pragma once

#include <QWidget>
#include <QColor>
#include <QImage>

#include "mipmap.h"
#include "canvastool.h"

class Canvas
	: public QWidget
{
	Q_OBJECT
public:
	Canvas(QWidget* parent);
	~Canvas();

	void load(QString file);

	void addTool(CanvasTool* tool);

	float mapX(float x);
	float unmapX(float x);
	float mapY(float y);
	float unmapY(float y);

public slots:
	void setXScale(float scale);
	void setYScale(float scale);
	void setXOffset(float scroll);
	void setYOffset(float scroll);

protected:
	void mouseMoveEvent(QMouseEvent* event);
	void mousePressEvent(QMouseEvent* event);
	void mouseReleaseEvent(QMouseEvent* event);
	void resizeEvent(QResizeEvent* event);
	void paintEvent(QPaintEvent* event);
	void keyReleaseEvent(QKeyEvent* event);

private:
	MipMap* mipmap;

	void updateWav();
	void getWavValues(int last, int lx, float* vu, float* vl,
	                  float* avgu, float* avgl);

	QImage wav;

public:
	float* data;
	size_t size;
	double samplerate{44100};

	QVector<CanvasTool*> tools;

private:
	float xscale;
	float yscale;
	float xoffset;
	float yoffset;

	QColor colBg;
	QColor colSec;
	QColor colMax;
	QColor colHalf;
	QColor colWavMax;
	QColor colWavAvg;
};