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/* The Ace of Penguins - cards.h
   Copyright (C) 1998, 2001 DJ Delorie

   This program 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, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */

#ifndef _cards_h_
#define _cards_h_

#define CARD_WIDTH      73
#define CARD_HEIGHT     97
#define CARD_MARGIN     6
#define CARD_FAN_DOWN   19
#define CARD_FAN_RIGHT  16

#define TABLE_MONO      0
#define TABLE_GRAY      1
#define TABLE_COLOR     2
extern int table_type;

extern int display_width, display_height;
extern int table_width, table_height;

#define OPTION_STRING   2
typedef struct {
  char *option;
  int type;
  void *ptr;
} OptionDesc;
/* Apps do `OptionDesc *app_options = app_option_table;' if needed, last zero */

typedef struct {
  char *name;
  void *function;
} FunctionMapping;

/* This sets display_width/height, sets table_width/height to preferred or zero */
void init_ace(int argc, char **argv, FunctionMapping *funcs);
/* This creates the initial window */
void init_table(int table_width, int table_height);
/* Call this to begin processing events; */
void table_loop();

#ifndef _IMAGELIB_H_
typedef struct image_list {
  int filler;
} image_list;
extern struct image_list appimglib_imagelib[];
int register_imagelib(struct image_list *);

/* Really, see image in imagelib.h */
typedef struct Picture {
  int w, h;
} Picture;

Picture *get_picture(char *name);

/* The x,y,w,h are relative to (0,0) on the picture.  The dx,dy
   indicate where (0,0) on the picture would go */
void put_picture(Picture *picture, int dx, int dy,
             int x, int y, int w, int h);
void put_picture_inverted(Picture *picture, int dx, int dy,
                    int x, int y, int w, int h);

/* This is drawn over everything else, centered.  Pass zero to remove */
void set_centered_pic(Picture *picture);
Picture *get_centered_pic();

extern void clip(int x, int y, int w, int h);
extern void clip_more(int x, int y, int w, int h);
extern void unclip();
extern void clear(int x, int y, int w, int h);
extern void invalidate(int x, int y, int w, int h);
extern void invalidate_nc(int x, int y, int w, int h);
extern void invalidate_exposure(int ox, int oy, int ow, int oh,
                        int nx, int ny, int nw, int nh);
extern void flush();
extern void flushsync();
extern void beep();
extern void text(char *s, int x, int y); /* lower left corner */
extern int font_width, font_height;

extern void help(char *filename, char *text);

/* user program may define these as needed.  It is not neccessary to
   clip the pictures during redraw, as put_picture knows when you're
   inside an expose and will clip and optimize accordingly. */
static void init();
static void redraw();
static void resize(int width, int height);
static void key(int k, int x, int y);
static void click(int x, int y, int b);
static void double_click(int x, int y, int b);
static void drag(int x, int y, int b);
static void drop(int x, int y, int b);

#define KEY_F(x)  (0x100 + (x))
#define KEY_DELETE      0x200
#define KEY_UP          0x201
#define KEY_DOWN  0x202
#define KEY_LEFT  0x203
#define KEY_RIGHT 0x204
#define KEY_PGUP  0x205
#define KEY_PGDN  0x206
#define KEY_HOME  0x207

void snap_to_grid(int *x, int *y,
              int step_x, int step_y,
              int origin_x, int origin_y,
              int max_distance);

#ifndef STACK_DEF
typedef struct Stack {void *stack__p;} Stack;

#define MAKE_CARD(s, v, f) ((f) + (v)*4 + (s))
#define SUIT(c)         ((c) & 3)
#define COLOR(c)  ((c) & 2)
#define VALUE(c)  (((c)>>2) & 15)
#define FACEDOWNP(c)    ((c) & FACEDOWN)
#define FACEUP          0x00
#define FACEDOWN  0x40

#define SUIT_HEARTS     0
#define SUIT_DIAMONDS   1
#define SUIT_CLUBS      2
#define SUIT_SPADES     3

#define ACE       1
#define JACK            11
#define QUEEN           12
#define KING            13

#define STACK_OFFSET_NONE     0
#define STACK_OFFSET_DOWN     2

typedef struct {
  int card_width, card_height;
  int fan_down, fan_right, fan_tbdown, fan_tbright;
} StackSizes;

Stack *     stack_create(int x, int y);
void  stack_destroy(Stack *s);
void  stack_set_pictures(Picture **fronts, Picture *back);
void  stack_load_standard_deck();
void  stack_move(Stack *s, int x, int y);
void  stack_set_offset(Stack *s, int which_offset);
void  stack_set_card_size(int width, int height);
void  stack_get_card_size(int *width, int *height);
void  stack_get_fans(int *down, int *right, int *tbdown, int *tbright);

void  stack_set_empty_picture(Stack *s, Picture *p);
void  stack_redraw();
void  stack_peek_card(Stack *s, int n, int show);

int   stack_count_cards(Stack *s);
int   stack_get_card(Stack *s, int n);
void  stack_add_card(Stack *s, int c);
int   stack_take_card(Stack *s);
void  stack_change_card(Stack *s, int n, int c);
void  stack_shuffle(Stack *s);

int   stack_find(int x, int y, Stack **stack_ret, int *n_ret);
int   stack_drag_find(int x, int y, Stack **stack_ret);
int   stack_card_posn(Stack *s, int n, int *x, int *y);

int   stack_move_cards(Stack *src, int n, Stack *dest); /* n is card # */
void  stack_flip_card(Stack *src, Stack *dest);
void  stack_flip_stack(Stack *src, Stack *dest);
void  stack_animate(Stack *src, Stack *dest);
void  stack_undo();
void  stack_undo_reset();

void  stack_begin_drag(Stack *s, int n, int x, int y);
void  stack_continue_drag(int n, int x, int y);
void  stack_drop(Stack *onto, int n);


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