Subversion Repositories planix.SVN

#pragma src     "/sys/src/libframe"
#pragma lib     "libframe.a"

typedef struct Frbox Frbox;
typedef struct Frame Frame;

enum{
        BACK,
        HIGH,
        BORD,
        TEXT,
        HTEXT,
        NCOL
};

#define FRTICKW 3

struct Frbox
{
        long            wid;            /* in pixels */
        long            nrune;          /* <0 ==> negate and treat as break char */
        union{
                uchar   *ptr;
                struct{
                        short   bc;     /* break char */
                        short   minwid;
                };
        };
};

struct Frame
{
        Font            *font;          /* of chars in the frame */
        Display         *display;       /* on which frame appears */
        Image           *b;             /* on which frame appears */
        Image           *cols[NCOL];    /* text and background colors */
        Rectangle       r;              /* in which text appears */
        Rectangle       entire;         /* of full frame */
        void                    (*scroll)(Frame*, int); /* scroll function provided by application */
        Frbox           *box;
        ulong           p0, p1;         /* selection */
        ushort          nbox, nalloc;
        ushort          maxtab;         /* max size of tab, in pixels */
        ushort          nchars;         /* # runes in frame */
        ushort          nlines;         /* # lines with text */
        ushort          maxlines;       /* total # lines in frame */
        ushort          lastlinefull;   /* last line fills frame */
        ushort          modified;       /* changed since frselect() */
        Image           *tick;  /* typing tick */
        Image           *tickback;      /* saved image under tick */
        int                     ticked; /* flag: is tick onscreen? */
};

ulong   frcharofpt(Frame*, Point);
Point   frptofchar(Frame*, ulong);
int     frdelete(Frame*, ulong, ulong);
void    frinsert(Frame*, Rune*, Rune*, ulong);
void    frselect(Frame*, Mousectl*);
void    frselectpaint(Frame*, Point, Point, Image*);
void    frdrawsel(Frame*, Point, ulong, ulong, int);
Point frdrawsel0(Frame*, Point, ulong, ulong, Image*, Image*);
void    frinit(Frame*, Rectangle, Font*, Image*, Image**);
void    frsetrects(Frame*, Rectangle, Image*);
void    frclear(Frame*, int);

uchar   *_frallocstr(Frame*, unsigned);
void    _frinsure(Frame*, int, unsigned);
Point   _frdraw(Frame*, Point);
void    _frgrowbox(Frame*, int);
void    _frfreebox(Frame*, int, int);
void    _frmergebox(Frame*, int);
void    _frdelbox(Frame*, int, int);
void    _frsplitbox(Frame*, int, int);
int     _frfindbox(Frame*, int, ulong, ulong);
void    _frclosebox(Frame*, int, int);
int     _frcanfit(Frame*, Point, Frbox*);
void    _frcklinewrap(Frame*, Point*, Frbox*);
void    _frcklinewrap0(Frame*, Point*, Frbox*);
void    _fradvance(Frame*, Point*, Frbox*);
int     _frnewwid(Frame*, Point, Frbox*);
int     _frnewwid0(Frame*, Point, Frbox*);
void    _frclean(Frame*, Point, int, int);
void    _frdrawtext(Frame*, Point, Image*, Image*);
void    _fraddbox(Frame*, int, int);
Point   _frptofcharptb(Frame*, ulong, Point, int);
Point   _frptofcharnb(Frame*, ulong, int);
int     _frstrlen(Frame*, int);
void    frtick(Frame*, Point, int);
void    frinittick(Frame*);
void    frredraw(Frame*);

#define NRUNE(b)        ((b)->nrune<0? 1 : (b)->nrune)
#define NBYTE(b)        strlen((char*)(b)->ptr)