/*
 * This file is a part of Winix
 * and is not publicly distributed
 * 
 * Copyright (c) 2010-2011, Tomasz Sowa
 * All rights reserved.
 * 
 */
 
#ifndef headerfile_winix_core_image
#define headerfile_winix_core_image

#include <string>
#include <list>
#include "basethread.h"
#include "textstream.h"
#include "db/db.h"
#include "core/item.h"
#include "core/config.h"


class System;



// Width given, height automagically selected to preserve aspect ratio.
#define WINIX_IMAGE_MODE_1	1

// Height given, width automagically selected to preserve aspect ratio.
#define WINIX_IMAGE_MODE_2	2

// Maximum values of height and width given, aspect ratio preserved.
#define WINIX_IMAGE_MODE_3	3

// Minimum values of width and height given, aspect ratio preserved.
#define WINIX_IMAGE_MODE_4	4

// Width and height emphatically given, original aspect ratio ignored.
#define WINIX_IMAGE_MODE_5	5

// Change as per widthxheight but only if an image dimension exceeds a specified dimension.
#define WINIX_IMAGE_MODE_6	6

// Change dimensions only if both image dimensions are less than specified dimensions.
#define WINIX_IMAGE_MODE_7	7


// resizing
#define WINIX_IMAGE_TYPE_RESIZE			1

// generating a thumbnail
#define WINIX_IMAGE_TYPE_CREATE_THUMB	2




class Image : public BaseThread
{
public:

	void SetDb(Db * pdb);
	void SetConfig(Config * pconfig);
	void SetSystem(System * psystem);

	void Resize(const Item & item, size_t cx, size_t cy, int aspect_mode, int quality);
	void CreateThumb(const Item & item, size_t cx, size_t cy, int aspect_mode, int quality);


private:

	Db * db;
	Config * config;
	System * system;

	struct ImageItem
	{
		int type;		// WINIX_IMAGE_TYPE_*
		Item file;
		size_t cx;
		size_t cy;
		int aspect_mode;
		int quality;
	};

	// queue of thumbnails to create
	typedef std::list<ImageItem> ImageTab;
	ImageTab image_tab;
	ImageItem item_temp;

	// only for second thread
	ImageItem item_work;
	std::wstring src_path, dst_path;
	TextStream<std::string> command;
	TextStream<std::wstring> stream_tmp_path;
	DbItemQuery iq;
	std::string add_tempa;
	std::string input_file_name;
	std::string tmp_file_name;

	virtual bool SignalReceived();
	virtual void Do();
	bool CreateCommand();
	bool CreateInputFileName();
	void CreateTmpFileName();
	void SaveImage();
	void CreateImage();
	void SelectAspect();
	void EscapePath(const std::string & path, TextStream<std::string> & out, bool clear_stream = true);
	void CheckParam(ImageItem & item);
	void Add(const std::wstring & in, TextStream<std::string> & out);
};


#endif