220 lines
6.4 KiB
C
220 lines
6.4 KiB
C
/* See LICENSE for license details. */
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#include <stdint.h>
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#include <sys/types.h>
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/* macros */
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#define MIN(a, b) ((a) < (b) ? (a) : (b))
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#define MAX(a, b) ((a) < (b) ? (b) : (a))
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#define LEN(a) (sizeof(a) / sizeof(a)[0])
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#define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
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#define DIVCEIL(n, d) (((n) + ((d) - 1)) / (d))
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#define DEFAULT(a, b) (a) = (a) ? (a) : (b)
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#define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
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#define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || \
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(a).bg != (b).bg || (a).decor != (b).decor)
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#define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + \
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(t1.tv_nsec-t2.tv_nsec)/1E6)
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#define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
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#define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
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#define IS_TRUECOL(x) (1 << 24 & (x))
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// This decor color indicates that the fg color should be used. Note that it's
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// not a 24-bit color because the 25-th bit is not set.
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#define DECOR_DEFAULT_COLOR 0x0ffffff
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enum glyph_attribute {
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ATTR_NULL = 0,
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ATTR_BOLD = 1 << 0,
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ATTR_FAINT = 1 << 1,
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ATTR_ITALIC = 1 << 2,
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ATTR_UNDERLINE = 1 << 3,
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ATTR_BLINK = 1 << 4,
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ATTR_REVERSE = 1 << 5,
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ATTR_INVISIBLE = 1 << 6,
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ATTR_STRUCK = 1 << 7,
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ATTR_WRAP = 1 << 8,
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ATTR_WIDE = 1 << 9,
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ATTR_WDUMMY = 1 << 10,
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ATTR_BOXDRAW = 1 << 11,
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ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
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ATTR_IMAGE = 1 << 14,
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};
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enum selection_mode {
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SEL_IDLE = 0,
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SEL_EMPTY = 1,
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SEL_READY = 2
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};
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enum selection_type {
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SEL_REGULAR = 1,
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SEL_RECTANGULAR = 2
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};
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enum selection_snap {
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SNAP_WORD = 1,
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SNAP_LINE = 2
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};
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enum underline_style {
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UNDERLINE_STRAIGHT = 1,
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UNDERLINE_DOUBLE = 2,
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UNDERLINE_CURLY = 3,
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UNDERLINE_DOTTED = 4,
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UNDERLINE_DASHED = 5,
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};
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typedef unsigned char uchar;
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typedef unsigned int uint;
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typedef unsigned long ulong;
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typedef unsigned short ushort;
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typedef uint_least32_t Rune;
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#define Glyph Glyph_
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typedef struct {
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Rune u; /* character code */
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ushort mode; /* attribute flags */
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uint32_t fg; /* foreground */
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uint32_t bg; /* background */
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uint32_t decor; /* decoration (like underline) */
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} Glyph;
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typedef Glyph *Line;
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typedef union {
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int i;
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uint ui;
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float f;
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const void *v;
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const char *s;
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} Arg;
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void die(const char *, ...);
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void redraw(void);
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void draw(void);
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void kscrolldown(const Arg *);
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void kscrollup(const Arg *);
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void printscreen(const Arg *);
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void printsel(const Arg *);
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void sendbreak(const Arg *);
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void toggleprinter(const Arg *);
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int tattrset(int);
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void tnew(int, int);
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void tresize(int, int);
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void tsetdirtattr(int);
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void ttyhangup(void);
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int ttynew(const char *, char *, const char *, char **);
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size_t ttyread(void);
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void ttyresize(int, int);
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void ttywrite(const char *, size_t, int);
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void resettitle(void);
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void selclear(void);
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void selinit(void);
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void selstart(int, int, int);
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void selextend(int, int, int, int);
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int selected(int, int);
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char *getsel(void);
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Glyph getglyphat(int, int);
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size_t utf8encode(Rune, char *);
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void *xmalloc(size_t);
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void *xrealloc(void *, size_t);
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char *xstrdup(const char *);
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int isboxdraw(Rune);
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ushort boxdrawindex(const Glyph *);
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#ifdef XFT_VERSION
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/* only exposed to x.c, otherwise we'll need Xft.h for the types */
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void boxdraw_xinit(Display *, Colormap, XftDraw *, Visual *);
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void drawboxes(int, int, int, int, XftColor *, XftColor *, const XftGlyphFontSpec *, int);
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#endif
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/* config.h globals */
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extern char *utmp;
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extern char *scroll;
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extern char *stty_args;
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extern char *vtiden;
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extern wchar_t *worddelimiters;
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extern int allowaltscreen;
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extern int allowwindowops;
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extern char *termname;
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extern unsigned int tabspaces;
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extern unsigned int defaultfg;
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extern unsigned int defaultbg;
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extern unsigned int defaultcs;
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extern const int boxdraw, boxdraw_bold, boxdraw_braille;
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// Accessors to decoration properties stored in `decor`.
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// The 25-th bit is used to indicate if it's a 24-bit color.
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static inline uint32_t tgetdecorcolor(Glyph *g) { return g->decor & 0x1ffffff; }
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static inline uint32_t tgetdecorstyle(Glyph *g) { return (g->decor >> 25) & 0x7; }
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static inline void tsetdecorcolor(Glyph *g, uint32_t color) {
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g->decor = (g->decor & ~0x1ffffff) | (color & 0x1ffffff);
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}
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static inline void tsetdecorstyle(Glyph *g, uint32_t style) {
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g->decor = (g->decor & ~(0x7 << 25)) | ((style & 0x7) << 25);
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}
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// Some accessors to image placeholder properties stored in `u`:
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// - row (1-base) - 9 bits
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// - column (1-base) - 9 bits
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// - most significant byte of the image id plus 1 - 9 bits (0 means unspecified,
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// don't forget to subtract 1).
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// - the original number of diacritics (0, 1, 2, or 3) - 2 bits
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// - whether this is a classic (1) or Unicode (0) placeholder - 1 bit
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static inline uint32_t tgetimgrow(Glyph *g) { return g->u & 0x1ff; }
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static inline uint32_t tgetimgcol(Glyph *g) { return (g->u >> 9) & 0x1ff; }
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static inline uint32_t tgetimgid4thbyteplus1(Glyph *g) { return (g->u >> 18) & 0x1ff; }
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static inline uint32_t tgetimgdiacriticcount(Glyph *g) { return (g->u >> 27) & 0x3; }
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static inline uint32_t tgetisclassicplaceholder(Glyph *g) { return (g->u >> 29) & 0x1; }
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static inline void tsetimgrow(Glyph *g, uint32_t row) {
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g->u = (g->u & ~0x1ff) | (row & 0x1ff);
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}
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static inline void tsetimgcol(Glyph *g, uint32_t col) {
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g->u = (g->u & ~(0x1ff << 9)) | ((col & 0x1ff) << 9);
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}
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static inline void tsetimg4thbyteplus1(Glyph *g, uint32_t byteplus1) {
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g->u = (g->u & ~(0x1ff << 18)) | ((byteplus1 & 0x1ff) << 18);
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}
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static inline void tsetimgdiacriticcount(Glyph *g, uint32_t count) {
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g->u = (g->u & ~(0x3 << 27)) | ((count & 0x3) << 27);
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}
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static inline void tsetisclassicplaceholder(Glyph *g, uint32_t isclassic) {
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g->u = (g->u & ~(0x1 << 29)) | ((isclassic & 0x1) << 29);
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}
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/// Returns the full image id. This is a naive implementation, if the most
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/// significant byte is not specified, it's assumed to be 0 instead of inferring
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/// it from the cells to the left.
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static inline uint32_t tgetimgid(Glyph *g) {
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uint32_t msb = tgetimgid4thbyteplus1(g);
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if (msb != 0)
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--msb;
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return (msb << 24) | (g->fg & 0xFFFFFF);
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}
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/// Sets the full image id.
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static inline void tsetimgid(Glyph *g, uint32_t id) {
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g->fg = (id & 0xFFFFFF) | (1 << 24);
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tsetimg4thbyteplus1(g, ((id >> 24) & 0xFF) + 1);
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}
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static inline uint32_t tgetimgplacementid(Glyph *g) {
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if (tgetdecorcolor(g) == DECOR_DEFAULT_COLOR)
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return 0;
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return g->decor & 0xFFFFFF;
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}
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static inline void tsetimgplacementid(Glyph *g, uint32_t id) {
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g->decor = (id & 0xFFFFFF) | (1 << 24);
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}
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