//#pragma src "/sys/src/libpanel"
//#pragma lib "libpanel.a"
typedef struct Scroll Scroll;
typedef struct Panel Panel; /* a Graphical User Interface element */
typedef struct Rtext Rtext; /* formattable text */
typedef void Icon; /* Always used as Icon * -- Image or char */
typedef struct Idol Idol; /* A picture/text combo */
struct Scroll{
Point pos, size;
};
struct Rtext{
int flags; /* responds to hits? text selection? */
void *user; /* user data */
int space; /* how much space before, if no break */
int indent; /* how much space before, after a break */
int voff; /* vertical offset (for subscripts and superscripts) */
Image *b; /* what to display, if nonzero */
Panel *p; /* what to display, if nonzero and b==0 */
Font *font; /* font in which to draw text */
char *text; /* what to display, if b==0 and p==0 */
Rtext *next; /* next piece */
/* private below */
Rtext *nextline; /* links line to line */
Rtext *last; /* last, for append */
Rectangle r; /* where to draw, if origin were Pt(0,0) */
int topy; /* y coord of top of line */
int wid; /* not including space */
};
struct Panel{
Point ipad, pad; /* extra space inside and outside */
Point fixedsize; /* size of Panel, if FIXED */
int user; /* available for user */
void *userp; /* available for user */
Rectangle r; /* where the Panel goes */
/* private below */
Panel *next; /* It's a list! */
Panel *child, *echild, *parent; /* No, it's a tree! */
Image *b; /* where we're drawn */
int flags; /* position flags, see below */
char *kind; /* what kind of panel? */
int state; /* for hitting & drawing purposes */
Point size; /* space for this Panel */
Point sizereq; /* size requested by this Panel */
Point childreq; /* total size needed by children */
Panel *lastmouse; /* who got the last mouse event? */
Panel *scrollee; /* pointer to scrolled window */
Panel *xscroller, *yscroller; /* pointers to scroll bars */
Scroll scr; /* scroll data */
void *data; /* kind-specific data */
void (*draw)(Panel *); /* draw panel and children */
int (*pri)(Panel *, Point); /* priority for hitting */
int (*hit)(Panel *, Mouse *); /* process mouse event */
void (*type)(Panel *, Rune); /* process keyboard event */
Point (*getsize)(Panel *, Point); /* return size, given child size */
void (*childspace)(Panel *, Point *, Point *); /* child ul & size given our size */
void (*scroll)(Panel *, int, int, int, int); /* scroll bar to scrollee */
void (*setscrollbar)(Panel *, int, int, int); /* scrollee to scroll bar */
void (*free)(Panel *); /* free fields of data when done */
char* (*snarf)(Panel *); /* snarf text from panel */
void (*paste)(Panel *, char *); /* paste text into panel */
};
/*
* Panel flags
*/
#define PACK 0x0007 /* which side of the parent is the Panel attached to? */
#define PACKN 0x0000
#define PACKE 0x0001
#define PACKS 0x0002
#define PACKW 0x0003
#define PACKCEN 0x0004 /* only used by pulldown */
#define FILLX 0x0008 /* grow horizontally to fill the available space */
#define FILLY 0x0010 /* grow vertically to fill the available space */
#define PLACE 0x01e0 /* which side of its space should the Panel adhere to? */
#define PLACECEN 0x0000
#define PLACES 0x0020
#define PLACEE 0x0040
#define PLACEW 0x0060
#define PLACEN 0x0080
#define PLACENE 0x00a0
#define PLACENW 0x00c0
#define PLACESE 0x00e0
#define PLACESW 0x0100
#define EXPAND 0x0200 /* use up all extra space in the parent */
#define FIXED 0x0c00 /* don't pass children's size requests through to parent */
#define FIXEDX 0x0400
#define FIXEDY 0x0800
#define MAXX 0x1000 /* make x size as big as biggest sibling's */
#define MAXY 0x2000 /* make y size as big as biggest sibling's */
#define BITMAP 0x4000 /* text argument is a bitmap, not a string */
/* pldefs.h flags 0x08000-0x40000 */
#define IGNORE 0x080000 /* ignore this panel totally */
#define USERFL 0x100000 /* start of user flag */
/*
* An extra bit in Mouse.buttons
*/
#define OUT 8 /* Mouse.buttons bit, set when mouse leaves Panel */
/*
* Priorities
*/
#define PRI_NORMAL 0 /* ordinary panels */
#define PRI_POPUP 1 /* popup menus */
#define PRI_SCROLLBAR 2 /* scroll bars */
Panel *plkbfocus; /* the panel in keyboard focus */
int plinit(void); /* initialization */
void plpack(Panel *, Rectangle); /* figure out where to put the Panel & children */
void plmove(Panel *, Point); /* move an already-packed panel to a new location */
void pldraw(Panel *, Image *); /* display the panel on the bitmap */
void plfree(Panel *); /* give back space */
void plgrabkb(Panel *); /* this Panel should receive keyboard events */
void plkeyboard(Rune); /* send a keyboard event to the appropriate Panel */
void plmouse(Panel *, Mouse *); /* send a Mouse event to a Panel tree */
void plscroll(Panel *, Panel *, Panel *); /* link up scroll bars */
char *plentryval(Panel *); /* entry delivers its value */
void plsetbutton(Panel *, int); /* set or clear the mark on a button */
void plsetslider(Panel *, int, int); /* set the value of a slider */
Rune *pleget(Panel *); /* get the text from an edit window */
int plelen(Panel *); /* get the length of the text from an edit window */
void plegetsel(Panel *, int *, int *); /* get the selection from an edit window */
void plepaste(Panel *, Rune *, int); /* paste in an edit window */
void plesel(Panel *, int, int); /* set the selection in an edit window */
void plescroll(Panel *, int); /* scroll an edit window */
Scroll plgetscroll(Panel *); /* get scrolling information from panel */
void plsetscroll(Panel *, Scroll); /* set scrolling information */
void plplacelabel(Panel *, int); /* label placement */
