103 lines
3.1 KiB
C
103 lines
3.1 KiB
C
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/*
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* This file is part of the UCB release of Plan 9. It is subject to the license
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* terms in the LICENSE file found in the top-level directory of this
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* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
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* part of the UCB release of Plan 9, including this file, may be copied,
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* modified, propagated, or distributed except according to the terms contained
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* in the LICENSE file.
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*/
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#pragma src "/sys/src/lib/frame"
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#pragma lib "libframe.a"
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typedef struct Frbox Frbox;
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typedef struct Frame Frame;
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enum{
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BACK,
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HIGH,
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BORD,
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TEXT,
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HTEXT,
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NCOL
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};
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#define FRTICKW 3
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struct Frbox
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{
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int32_t wid; /* in pixels */
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int32_t nrune; /* <0 ==> negate and treat as break char */
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union{
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uint8_t *ptr;
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struct{
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int16_t bc; /* break char */
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int16_t minwid;
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};
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};
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};
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struct Frame
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{
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Font *font; /* of chars in the frame */
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Display *display; /* on which frame appears */
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Image *b; /* on which frame appears */
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Image *cols[NCOL]; /* text and background colors */
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Rectangle r; /* in which text appears */
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Rectangle entire; /* of full frame */
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void (*scroll)(Frame*, int); /* scroll function provided by application */
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Frbox *box;
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uint32_t p0, p1; /* selection */
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uint16_t nbox, nalloc;
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uint16_t maxtab; /* max size of tab, in pixels */
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uint16_t nchars; /* # runes in frame */
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uint16_t nlines; /* # lines with text */
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uint16_t maxlines; /* total # lines in frame */
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uint16_t lastlinefull; /* last line fills frame */
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uint16_t modified; /* changed since frselect() */
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Image *tick; /* typing tick */
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Image *tickback; /* saved image under tick */
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int ticked; /* flag: is tick onscreen? */
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};
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uint32_t frcharofpt(Frame*, Point);
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Point frptofchar(Frame*, uint32_t);
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int frdelete(Frame*, uint32_t, uint32_t);
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void frinsert(Frame*, Rune*, Rune*, uint32_t);
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void frselect(Frame*, Mousectl*);
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void frselectpaint(Frame*, Point, Point, Image*);
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void frdrawsel(Frame*, Point, uint32_t, uint32_t, int);
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Point frdrawsel0(Frame*, Point, uint32_t, uint32_t, Image*, Image*);
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void frinit(Frame*, Rectangle, Font*, Image*, Image**);
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void frsetrects(Frame*, Rectangle, Image*);
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void frclear(Frame*, int);
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uint8_t *_frallocstr(Frame*, unsigned);
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void _frinsure(Frame*, int, unsigned);
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Point _frdraw(Frame*, Point);
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void _frgrowbox(Frame*, int);
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void _frfreebox(Frame*, int, int);
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void _frmergebox(Frame*, int);
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void _frdelbox(Frame*, int, int);
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void _frsplitbox(Frame*, int, int);
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int _frfindbox(Frame*, int, uint32_t, uint32_t);
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void _frclosebox(Frame*, int, int);
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int _frcanfit(Frame*, Point, Frbox*);
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void _frcklinewrap(Frame*, Point*, Frbox*);
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void _frcklinewrap0(Frame*, Point*, Frbox*);
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void _fradvance(Frame*, Point*, Frbox*);
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int _frnewwid(Frame*, Point, Frbox*);
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int _frnewwid0(Frame*, Point, Frbox*);
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void _frclean(Frame*, Point, int, int);
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void _frdrawtext(Frame*, Point, Image*, Image*);
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void _fraddbox(Frame*, int, int);
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Point _frptofcharptb(Frame*, uint32_t, Point, int);
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Point _frptofcharnb(Frame*, uint32_t, int);
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int _frstrlen(Frame*, int);
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void frtick(Frame*, Point, int);
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void frinittick(Frame*);
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void frredraw(Frame*);
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#define NRUNE(b) ((b)->nrune<0? 1 : (b)->nrune)
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#define NBYTE(b) strlen((char*)(b)->ptr)
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