#ifndef UI_HELPER_H
#define UI_HELPER_H
#include "timers.h"
#include "xio.h"

#ifdef SFFE_USING
#include "sffe.h"
#endif

#ifdef __cplusplus
extern "C" {
#endif
#define MAXFILTERS 20
#define AVRGSIZE 50
#define NMESSAGES 5
#define BGCOLOR(uih) uih->palette->index[0]
#define FGCOLOR(uih) uih->palette->index[1]
#define SELCOLOR(uih) uih->palette->index[2]
#define DARKGRAYCOLOR(uih) uih->palette->index[3]
#define LIGHTGRAYCOLOR(uih) uih->palette->index[4]
#define LIGHTGRAYCOLOR2(uih) uih->palette->index[5]
#define NONTRANSPARENTW 1
#define DRAWBORDER 2
#define BORDER_PRESSED 4
#define BORDER_TRANSPARENT 8
#define BORDER_LIGHT 16

    struct uih_message {
	char *message[NMESSAGES];
	tl_timer *messagetimer[NMESSAGES];
	int messagetype[NMESSAGES];
	struct uih_window *w[NMESSAGES];
	int pid[NMESSAGES];
	int messagestart;
    };
    struct uih_line {
	int key;
	int morph;
	int color;
	int posmode;
	number_t x1, y1, x2, y2;
	int mposmode;
	number_t mx1, my1, mx2, my2;
	struct uih_line *next, *prev;
	struct uih_window *w;
    };
    struct uih_lines {
	struct uih_line *first;
	int morphing;
	int currkey;
    };

    struct uih_savedcontext {
	xio_file file;
	int mode;
	number_t speedup, maxstep;
	number_t xcenter, ycenter;
	tl_timer *timer;
	tl_timer *synctimer;
	struct fractal_context *fcontext;
	int clearscreen;
	int fastmode, juliamode, fastrotate, autorotate;
	number_t rotationspeed;
	int firsttime;
	int filter[MAXFILTERS];
	int pressed;
	int rotatepressed;
	int cycling;
	int shifted;
	int manualpaletteshift;
	int direction;
	int cyclingspeed;
	int zoomactive;
	int xtextpos, ytextpos;
	int writefailed;
	int nonfractalscreen;
	int color;
    };
#define MAXLEVEL 10		/*Maximal include level */
    struct uih_playcontext {
	xio_file file;
	xio_file prevfiles[MAXLEVEL + 1];
	int level;
	xio_path directory;
	tl_timer *timer;
	int waittime;
	int playframe;
	int timerin;
	int frametime, starttime;
	int morph;
	int morphtimes[2];
	int morphjulia;
	int morphjuliatimes[2];
	int morphangle;
	int morphangletimes[2];
	vinfo destination;
	vinfo source;
	number_t srcangle, destangle;
	number_t sr, si, dr, di;
	int readfailed;
	int line;
	struct uih_lines lines;
	int morphlinetimes[2];
    };
#define SQR(val) (((double)(val))*(val))
#define MORPHVALUE(time,len,starttime,endtime) \
  	(time)<0?0.0 \
  	:(time)>=(len)?1.0 \
  	:(time)<(starttime) && (starttime)?(SQR((time)/(double)(starttime))/2*(starttime)/((len)-(starttime)/2-(endtime)/2))\
	:((len)-(time)<(endtime)) && (endtime)?1-(SQR(((len)-(time))/(double)(endtime))/2*(endtime)/((len)-(starttime)/2-(endtime)/2)) \
	:((time)-(starttime)/2)/((double)(len)-(starttime)/2-(endtime)/2)
#ifdef _NEVER_
#define MORPHVALUE(time,len,starttime,endtime) \
	(((time))/((double)(len)))
#endif
#define DOMORPH(time,len,starttime,endtime,startval,endval) \
  	((startval)+((endval)-(startval))*MORPHVALUE(time,len, starttime,endtime))

#define UNDOLEVEL 256
    struct uih_undocontext {
	int last;
	char *undos[256];
    };
    struct uih_context {
	void (*updatemenus) (struct uih_context *, CONST char *);
	/*stuff that should be visible from outside */
	number_t speedup, maxstep;	/*zooming speed */

	/* Informations provided to the user interface: */
	CONST char *menuroot;
	int display;		/*1 when ui wants to display something */
	int save;		/*1 if save animation is enabled */
	int play;		/*1 if animation replay is active */
	int cycling;		/*1 if cycling is enabled */
	int incalculation;	/*1 if calulcation is currently in process */
	int flags;
	int interrupt;		/*set to interrupt current calculation */

	/*server's callbacks */
	int (*passfunc) (struct uih_context *, int, CONST char *, float);
	void (*longwait) (struct uih_context *);

	struct uih_undocontext undo;
	/*Filter system state */
	struct image *image;
	struct palette *palette;
	struct fractal_context *fcontext;	/*fractal informations */
	struct queue *queue;
	struct filter *uifilter;	/*user interface layer */
	struct filter *rotatef;	/* Special filters handler by ui_helper: */
	struct filter *zengine;
	struct filter *fixedcolor;
	/*Julia/filter mechanizm */
	struct filter *subwindow, *julia, *smalliter;
	struct filter *filter[MAXFILTERS];

	/*General status variables */
	double mul;		/*speed of last iteration */
	int rotatemode;		/*ROTATE_NONE, ROTATE_CONTINUOUS or ROTATE_NONE */
	number_t rotationspeed;	/*speed of continuous rotation */
	int fastmode;		/*when draw in fast mode */
	int juliamode;
	int fastrotate;
	int uncomplette;	/*1 if image is not complettly caluclated or in animation */
	int dirty;		/*1 if image is inexact */
	int inanimation;	/*1 if uih_update wants to be called soon */
	int fastanimation;	/*1 if animation needs to be fast */
	int palettetype, paletteseed;	/*0 for default palette,1,2 for random */
	int clearscreen;	/*1 when ui want to clear screen */
	int indofractal;	/*1 when caluclation is in the process */
	int xtextpos, ytextpos;	/*possitioning of text */
	int color;		/*Color of text */
	int recalculatemode;	/*informations for user interface */
	int stoppedtimers;	/*1 when timers are stopped */
	int nletters;		/*Number of letters displayed at screen */
	int letterspersec;	/*Number of letters per second user should read */
	char *text[3];		/*Currently displayed text informations: */
	struct uih_window *textwindow[3], *cscreenwindow;
	int textpos[3], textcolor[3];
	CONST char *errstring;	/*String of last unprocessed error */

	CONST struct xfont *font;	/*Font used by UI */
	struct uih_window *wtop;
	int wflipped;
	int wdisplayed;

	/*Save variables */
	int todisplayletters;
	struct uih_savedcontext *savec;
	int viewchanged;	/*When to generate setview commands */
	int palettechanged;	/*When to generate setpalette commands */
	int displaytext;	/*When text was displayed in this frame */
	int nonfractalscreen;
	/*waiting variables */
	void (*complettehandler) (void *);	/*Handler to be activated when calculation is complette */
	void *handlerdata;
	/*replay variables */
	struct uih_playcontext *playc;
	int playpos;
	CONST char *playstring;

	/*For constant framerate */
	struct timeemulator *emulator;
	int emulatedframetime;
	int aliasnum;
	int fixedstep;

	/*zoom/unzoom */
	number_t speed, step;
	number_t xcenter, ycenter;
	int xcenterm, ycenterm;
	int zoomactive;

	/*drag&drop move */
	int pressed;
	number_t oldx, oldy;
	int moved;

	/*drag&drop rotate */
	int rotatepressed;
	number_t oldangle;

	int ddatalost;
	int tbreak;

	int autopilot;		/*for uih side of autopilot */
	int autopilotx, autopiloty, autopilotbuttons;

	/*calculation time variables */
	int interruptiblemode;
	int starttime, endtime;
	int maxtime;

	/*dynamical timeout measuring */
	int times[2][AVRGSIZE];	/*for statistics */
	int timespos, count[2];
	double lastspeed, lasttime;

	/*number_t xsize, ysize; */
	tl_timer *maintimer, *cyclingtimer, *autopilottimer,
	    *calculatetimer, *doittimer;
	tl_group *autopilotgroup;

	/*color cycling values */
	int direction;
	int cyclingdirection;
	int stopped;
	int cyclingspeed;

	/*autopilot internal values */
	int x1, y1, c1;
	number_t minsize;
	number_t maxsize;
	int autopilotversion;
	int autime;
	int minlong;
	int interlevel;

	/*saved palettes */
	struct palette *palette2;

	int paletteshift;
	int manualpaletteshift;

	struct uih_message messg;

	/*Used by uih_update to figure out when save undo */
	int lastbuttons;

	int encoding;

	/* performers really don't want text echoed to the screen */
	int inhibittextoutput;

        /* user data */
        void *data;

#ifdef SFFE_USING
	/*User formulas (used in sffe parser) */
	/*sffe *cparser;  user define c evaluation formula, not used now, not used yet */
	sffe *parser;		/* fractal formula */
	sffe *pinit;
#endif

    };
    typedef void (*uih_getposfunc) (struct uih_context * c, int *x, int *y,
				    int *width, int *height, void *data);
    typedef void (*uih_drawfunc) (struct uih_context * c, void *data);
    struct uih_window {
	int x, y, width, height;
	uih_getposfunc getpos;
	uih_drawfunc draw;
	struct uih_window *next;
	struct uih_window *previous;
	int savedline, savedpos;
	char *saveddata;
	void *data;
	int flags;
    };
    typedef struct uih_context uih_context;

#define UIH_SAVEALL 2
#define UIH_SAVEANIMATION 1
#define UIH_SAVEPOS 0

#define UIH_PALETTEDRAW -2
#define UIH_FILTERANIMATION -1
#define UIH_INTERRUPTIBLE 0
#define UIH_ANIMATION 1
#define UIH_NEW_IMAGE 2
#define UIH_UNINTERRUPTIBLE 3
#define FRAMETIME (1000000/FRAMERATE)

#define UIH_TEXTTOP 0
#define UIH_TEXTMIDDLE 1
#define UIH_TEXTBOTTOM 2

#define UIH_TEXTLEFT 0
#define UIH_TEXTCENTER 1
#define UIH_TEXTRIGHT 2

#define RANDOM_PALETTE_SIZE 1
#define FULLSCREEN 2
#define UPDATE_AFTER_PALETTE 4
#define UPDATE_AFTER_RESIZE 8
#define PALETTE_ROTATION 16
#define ASYNC_PALETTE 32
#define ROTATE_INSIDE_CALCULATION 64
#define PALETTE_REDISPLAYS 128
#define SCREENSIZE 256
#define PIXELSIZE 512
#define RESOLUTION 1024

#define BUTTON1 256
#define BUTTON2 512
#define BUTTON3 1024

#define ROTATE_NONE 0
#define ROTATE_MOUSE 1
#define ROTATE_CONTINUOUS 2

#define uih_needrecalculate(context) ((context)->recalculatemode)
#define uih_needdisplay(context) ((context)->display)
#define GETMAX(a,b) ((a)>(b)?(a):(b))
#define uih_newimage(c) ((c)->display=1,((c)->recalculatemode=GETMAX((c)->recalculatemode,UIH_NEW_IMAGE)))
#define uih_animate_image(c) ((c)->display=1,(c)->recalculatemode=GETMAX((c)->recalculatemode,UIH_ANIMATION))

#define uih_updatemenus(uih,c) if(uih->updatemenus!=NULL) uih->updatemenus(uih,c);

    extern CONST struct filteraction *CONST uih_filters[MAXFILTERS];
    extern CONST int uih_nfilters;

    struct uih_context *uih_mkcontext(int flags, struct image *image,
				      int (*passfunc) (struct uih_context
						       *, int,
						       CONST char *,
						       float),
				      void (*longwait) (struct uih_context
							*),
				      void (*updatemenus) (struct
							   uih_context * c,
							   CONST char *));
    int uih_updateimage(uih_context * c, struct image *img);
    void uih_freecontext(uih_context * c);


    void uih_callcomplette(uih_context * c);
/*palette functions */
    void uih_mkdefaultpalette(uih_context * c);
    void uih_mkpalette(uih_context * c);
    void uih_savepalette(uih_context * c);
    void uih_restorepalette(uih_context * c);
    void uih_loadpalette(uih_context * c, struct palette *palette);

/*autopilot handling */
    void uih_autopilot_on(uih_context * c);
    void uih_autopilot_off(uih_context * c);

/*misc functions */
    int uih_update(uih_context * c, int mousex, int mousey,
		   int mousebuttons);
    CONST char *uih_save(struct uih_context *c, xio_constpath filename);
    void uih_tbreak(uih_context * c);
    double uih_displayed(uih_context * c);
    void uih_do_fractal(uih_context * c);
    void uih_prepare_image(uih_context * c);
    void uih_interrupt(uih_context * c);
    void uih_stopzooming(uih_context * c);
    void uih_setspeedup(uih_context * c, number_t speed);
    void uih_setmaxstep(uih_context * c, number_t speed);
    void uih_setcomplettehandler(uih_context * c, void (h) (void *),
				 void *d);
    void uih_recalculate(struct uih_context *c);
    void uih_initstate(struct uih_context *uih);
    void uih_screentofractalcoord(uih_context * c, int mousex, int mousey,
				  number_t * re, number_t * im);


/*cycling functions */
    void uih_cycling_off(struct uih_context *c);
    void uih_cycling_stop(struct uih_context *c);
    void uih_cycling_continue(struct uih_context *c);
    void uih_setcycling(struct uih_context *c, int speed);
    int uih_cycling_on(struct uih_context *c);
    int uih_cycling(struct uih_context *c, int mode);

/*fractal context manipulation routines */
    void uih_setformula(uih_context * c, int formula);
    void uih_setperbutation(uih_context * c, number_t re, number_t im);
    void uih_perbutation(uih_context * c, int mousex, int mousey);
    void uih_setmaxiter(uih_context * c, int maxiter);
    void uih_setbailout(uih_context * c, number_t bailout);
    void uih_setincoloringmode(uih_context * c, int mode);
    void uih_setoutcoloringmode(uih_context * c, int mode);
    void uih_setintcolor(uih_context * c, int mode);
    void uih_setouttcolor(uih_context * c, int mode);
    void uih_setplane(uih_context * c, int mode);
    void uih_setmandelbrot(uih_context * c, int mode, int mousex,
			   int mousey);
    void uih_setfastmode(uih_context * c, int mode);
    void uih_setguessing(uih_context * c, int range);
    void uih_setperiodicity(uih_context * c, int periodicity);
    void uih_display(uih_context * c);
    void uih_disablejulia(uih_context * c);
    int uih_enablejulia(uih_context * c);
    int uih_setjuliamode(uih_context * c, int mode);
    void uih_setjuliaseed(uih_context * c, number_t zre, number_t zim);

/*filter manipulation */
    int uih_enablefilter(uih_context * c, int n);
    void uih_disablefilter(uih_context * c, int n);

/*Animation save routines */
    int uih_save_enable(struct uih_context *uih, xio_file f, int mode);
    void uih_save_disable(struct uih_context *uih);
    void uih_saveframe(struct uih_context *uih);
    void uih_save_possition(struct uih_context *uih, xio_file f, int mode);

    void uih_load(struct uih_context *uih, xio_file f, xio_constpath name);
    void uih_loadstr(struct uih_context *uih, CONST char *data);
    void uih_playstr(struct uih_context *uih, CONST char *data);
    void uih_playupdate(struct uih_context *uih);
    void uih_replaydisable(struct uih_context *uih);
    void uih_skipframe(struct uih_context *uih);
    int uih_replayenable(struct uih_context *uih, xio_file f,
			 xio_constpath filename, int animroot);
    void uih_command(struct uih_context *uih, CONST char *command);
    void uih_playtutorial(struct uih_context *c, CONST char *name);

/* Easy to use functions for handling save/load*/
    void uih_loadfile(struct uih_context *uih, xio_constpath d);
    void uih_playfile(struct uih_context *c, xio_constpath d);
    void uih_loadexample(struct uih_context *c);
    void uih_savepngfile(struct uih_context *c, xio_constpath d);
    void uih_saveposfile(struct uih_context *c, xio_constpath d);
    char *uih_savepostostr(struct uih_context *c);
    void uih_savecfg(struct uih_context *c);
    void uih_saveanimfile(struct uih_context *c, xio_constpath d);
    void uih_update_lines(uih_context * c);


/*timer functions */
    void uih_stoptimers(uih_context * c);
    void uih_resumetimers(uih_context * c);
    void uih_slowdowntimers(uih_context * c, int time);

/*text output functions */
    void uih_clearscreen(uih_context * c);
    void uih_settextpos(uih_context * c, int x, int y);
    void uih_text(uih_context * c, CONST char *text);
    void uih_letterspersec(uih_context * c, int n);

/*image rotation functions */
    int uih_fastrotate(uih_context * c, int mode);
    int uih_fastrotateenable(uih_context * c);
    void uih_fastrotatedisable(uih_context * c);
    void uih_angle(uih_context * c, number_t angle);
    void uih_rotatemode(uih_context * c, int mode);
    void uih_rotate(uih_context * c, int mode);
    void uih_rotationspeed(uih_context * c, number_t speed);

/*Catalog functions */
    int uih_loadcatalog(uih_context * c, CONST char *name);
    void uih_freecatalog(uih_context * c);

    void uih_registermenus(void);
    void uih_registermenus_i18n(void);
    void uih_registermenudialogs_i18n(void);
    void uih_unregistermenus(void);

/*Windows :)*/
    struct uih_window *uih_registerw(struct uih_context *uih,
				     uih_getposfunc getpos,
				     uih_drawfunc draw, void *data,
				     int flags);
    void uih_removew(struct uih_context *uih, struct uih_window *w);
    void uih_clearwindows(struct uih_context *uih);
    void uih_drawwindows(struct uih_context *uih);
    void uih_drawborder(struct uih_context *uih, int x, int y, int width,
			int height, int flags);
    void uih_setline(struct uih_context *uih, struct uih_window *w,
		     int color, int x1, int y1, int x2, int y2);
    struct uih_window *uih_registerline(struct uih_context *uih, int color,
					int x1, int y1, int x2, int y2);


/*Messages*/
    void uih_scrollup(uih_context * c);
    void uih_clearmessages(uih_context * c);
    int uih_message(uih_context * c, CONST char *message);
    int uih_error(uih_context * c, CONST char *error);
    void uih_rmmessage(uih_context * c, int pid);
    void uih_printmessages(uih_context * c);

/*Constant framerate functions*/
    void uih_emulatetimers(uih_context * c);
    void uih_constantframetime(uih_context * c, int time);
    void uih_noconstantframetime(uih_context * c);

/*undo and redo*/
    void uih_saveundo(uih_context * c);
    void uih_undo(uih_context * c);
    void uih_redo(uih_context * c);

    void uih_setfont(uih_context * c);

/*animation rendering*/
    int uih_renderanimation(struct uih_context *gc, CONST char *basename,
			    CONST xio_constpath animation, int width,
			    int height, float pixelwidth,
			    float pixelheight, int frametime, int type,
			    int antialiasing, int slowmode,
			    int letterspersec, CONST char *catalog,
			    int motionvectors, int iframedist2);
    int uih_renderimage(struct uih_context *gc1, xio_file af,
			xio_constpath path, struct image *img,
			int antialias, CONST char *catalog, int noise);

    void uih_initmessages(uih_context * c);
    void uih_destroymessages(uih_context * c);
    void uih_inittext(uih_context * c);
    void uih_destroytext(uih_context * c);

    void uih_inhibittextsw(uih_context * c);
    int uih_inhibittextselected(uih_context * c);

#ifdef __cplusplus
}
#endif
#endif