/*
** bitmap.h
**
** This file is part of mkxp.
**
** Copyright (C) 2013 - 2021 Amaryllis Kulla <ancurio@mapleshrine.eu>
**
** mkxp 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.
**
** mkxp 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 mkxp.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef BITMAP_H
#define BITMAP_H

#include "disposable.h"
#include "etc-internal.h"
#include "etc.h"

#include <sigc++/signal.h>

class Font;
class ShaderBase;
struct TEXFBO;
struct SDL_Surface;

struct BitmapPrivate;
// FIXME make this class use proper RGSS classes again
class Bitmap : public Disposable
{
public:
	Bitmap(const char *filename);
	Bitmap(int width, int height);
	/* Clone constructor */
	Bitmap(const Bitmap &other);
	~Bitmap();

	int width()  const;
	int height() const;
	IntRect rect() const;

	void blt(int x, int y,
	         const Bitmap &source, IntRect rect,
	         int opacity = 255);

	void stretchBlt(const IntRect &destRect,
	                const Bitmap &source, const IntRect &sourceRect,
	                int opacity = 255);

	void fillRect(int x, int y,
	              int width, int height,
	              const Vec4 &color);
	void fillRect(const IntRect &rect, const Vec4 &color);

	void gradientFillRect(int x, int y,
	                      int width, int height,
	                      const Vec4 &color1, const Vec4 &color2,
	                      bool vertical = false);
	void gradientFillRect(const IntRect &rect,
	                      const Vec4 &color1, const Vec4 &color2,
	                      bool vertical = false);

	void clearRect(int x, int y,
	               int width, int height);
	void clearRect(const IntRect &rect);

	void blur();
	void radialBlur(int angle, int divisions);

	void clear();

	Color getPixel(int x, int y) const;
	void setPixel(int x, int y, const Color &color);

	void hueChange(int hue);

	enum TextAlign
	{
		Left = 0,
		Center = 1,
		Right = 2
	};

	void drawText(int x, int y,
	              int width, int height,
	              const char *str, int align = Left);

	void drawText(const IntRect &rect,
	              const char *str, int align = Left);

	IntRect textSize(const char *str);

	DECL_ATTR(Font, Font&)

	/* Sets initial reference without copying by value,
	 * use at construction */
	void setInitFont(Font *value);

	/* extensions */
	void writeToPng(const char *filename);

	void vFlip();
	void hFlip();

	/* <internal> */
	TEXFBO &getGLTypes();
	SDL_Surface *megaSurface() const;
	void ensureNonMega() const;

	/* Binds the backing texture and sets the correct
	 * texture size uniform in shader */
	void bindTex(ShaderBase &shader);

	/* Adds 'rect' to tainted area */
	void taintArea(const IntRect &rect);

	sigc::signal<void> modified;

private:
	void releaseResources();
	const char *klassName() const { return "bitmap"; }

	BitmapPrivate *p;
};

#endif // BITMAP_H