GED 2006 (C++)

/*
 * File: appwnd.h - Application window
 * Project: GED - bitmap editor (ICP)
 * Author: Kamil Dudka, xdudka00
 * Team: xdudka00, xfilak01, xhefka00, xhradi08
 * Created: 2006-04-08
 */
 
#ifndef APPWND_H
#define APPWND_H
 
#include <string>
#include <list>
 
#include <FL/Fl_Pack.H>
#include <FL/Fl_Window.H>
 
#include "docwnd.h"
 
class Image;
class Document;
class AppMenu;
class ToolSelect;
class BrushSelect;
class Fl_Button;
class Fl_Valuator;
class Fl_PNG_Image;
 
/**
 * Application window (singleton)
 */
class AppWnd: public Fl_Window {
public:
	~AppWnd ();
 
	/**
	 * Access point to singleton AppWnd.
	 * \return Return pointer to singleton.
	 */
	static AppWnd *ptr ();
 
	/**
	 * Destroy singleton AppWnd. It has no effect if object is not allocated.
	 */
	static void destroy ();
 
	/**
	 * Try to close all documents attached to AppWnd singleton.
	 * \return Return true if all documents are closed.
	 */
	bool closeAll ();
 
	/**
	 * Try to close all documents. If success, close HelpBrowser singleton and AppWnd singleton.
	 */
	void exit ();
 
	/**
	 * Search pointer to window in document list.
	 * \param wnd Pointer to window.
	 * \return Return true if pointer points to Document object.
	 */
	bool isDocument (Fl_Window *wnd);
 
	/**
	 * \return Return DrawContext structure containing current draw tool properties.
	 */
	DrawContext drawContext () const;
 
	/**
	 * Set current draw tool.
	 * \param et Draw tool enumeration.
	 */
	void selectTool (EDrawTool et);
 
	/**
	 * \return Return unique file name for new document.
	 */
	static std::string newDocName ();
 
protected:
	/**
	 * Singleton can not be allocated static. Use method AppWnd::ptr() method to obtain singleton address.
	 */
	AppWnd ();
 
	/**
	 * Add pointer to Document object to document list.
	 * \param doc Pointer to document to add.
	 */
	void addDoc (Document *doc);
 
	/**
	 * Remove pointer to Document object from document list.
	 * \param doc Pointer to document to remove.
	 */
	void remDoc (Document *doc);
 
	/**
	 * Needed to add/remove documents automatically.
	 */
	friend class Document;
 
private:
	static AppWnd *_instance;
	static int _iNewDocIterator;
	std::list<Document *> _docList;
 
	DrawContext _drawContext;
 
	AppMenu *_menu;
	ToolSelect *_toolSelect;
	BrushSelect *_fgBrushSelect;
	BrushSelect *_bgBrushSelect;
};
 
/**
 * Document class is very similar to DocWnd.
 * When an Document object is created, it is automatically added to document list.
 * And it is automatically removed from document list, when object is deleted.
 */
class Document: public DocWnd {
public:
	/**
	 * Create Document object. Read the DocWnd class description for more information.
	 */
	Document (Image *img): DocWnd (img) {
		AppWnd::ptr() -> addDoc (this);
	}
 
	virtual ~Document () {
		AppWnd::ptr() -> remDoc (this);
       	}
};
 
/**
 * Tool selection widget
 */
class ToolSelect: public Fl_Pack {
public:
	/**
	 * Create widget.
	 * \param x Widget position.
	 * \param y Widget position.
	 * \param dt Pointer to data of this widget. It is used for reading and writeing.
	 */
	ToolSelect (int x, int y, EDrawTool *dt);
	~ToolSelect ();
 
	/**
	 * Redraw widget. This shloud be called if tool is changed outside this widget.
	 */
	virtual void redraw ();
 
	static const int iRowCnt = 2 ;				///< Toolbar rows count.
	static const int iColCnt = 4 ;				///< Toolbar columns count.
	static const int iButtonSize = 64;			///< Toolbar button size.
	static const int iButtonCnt = iRowCnt * iColCnt;	///< Toolbar buttons count.
	static const int width = iColCnt * iButtonSize;		///< Widget width.
	static const int height = iRowCnt * iButtonSize;	///< Widget height.
 
private:
	static void cb_button (Fl_Widget *, void *);		///< Button callback
	void setTool (Fl_Button *butt);
 
	EDrawTool *_drawTool;
	Fl_Button *_tbButt [iButtonCnt];
	Fl_PNG_Image *_tbIcon [iButtonCnt];
};
 
/**
 * Brush selection widget
 */
class BrushSelect: public Fl_Pack {
public:
	/**
	 * Create widget.
	 * \param x Widget position.
	 * \param y Widget position.
	 * \param width Widget width.
	 * \param height Widget height.
	 * \param szTitle Color chooser button text.
	 * \param pBrushSize Pointer to variable containing brush width.
	 * \param pBrushColor Pointer to variable containing brush color.
	 */
	BrushSelect (int x, int y, int width, int height, const char *szTitle, int *pBrushSize, Pixel *pBrushColor);
	~BrushSelect ();
 
private:
	int *_pBrushSize;
	Pixel *_pBrushColor;
 
	Fl_Button *_pButt;
	Fl_Valuator *_pVal;
 
	void askForColor ();
	void setButtonColor ();
	void readBrushWidht ();
 
	static void cb_button (Fl_Widget *, void *);
	static void cb_valuator (Fl_Widget *, void *);
};
 
 
#endif