boxdraw added
This commit is contained in:
Luke Smith
parent
b43e574fa6
commit
b35e4f5727
3
Makefile
3
Makefile
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@ -4,7 +4,7 @@
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include config.mk
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SRC = st.c x.c
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SRC = st.c x.c boxdraw.c
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OBJ = $(SRC:.c=.o)
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all: options st
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@ -23,6 +23,7 @@ config.h:
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st.o: config.h st.h win.h
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x.o: arg.h config.h st.h win.h
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boxdraw.o: config.h st.h boxdraw_data.h
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$(OBJ): config.h config.mk
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194
boxdraw.c
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194
boxdraw.c
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@ -0,0 +1,194 @@
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/*
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* Copyright 2018 Avi Halachmi (:avih) avihpit@yahoo.com https://github.com/avih
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* MIT/X Consortium License
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*/
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#include <X11/Xft/Xft.h>
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#include "st.h"
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#include "boxdraw_data.h"
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/* Rounded non-negative integers division of n / d */
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#define DIV(n, d) (((n) + (d) / 2) / (d))
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static Display *xdpy;
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static Colormap xcmap;
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static XftDraw *xd;
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static Visual *xvis;
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static void drawbox(int, int, int, int, XftColor *, XftColor *, ushort);
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static void drawboxlines(int, int, int, int, XftColor *, ushort);
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/* public API */
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void
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boxdraw_xinit(Display *dpy, Colormap cmap, XftDraw *draw, Visual *vis)
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{
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xdpy = dpy; xcmap = cmap; xd = draw, xvis = vis;
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}
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int
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isboxdraw(Rune u)
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{
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Rune block = u & ~0xff;
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return (boxdraw && block == 0x2500 && boxdata[(uint8_t)u]) ||
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(boxdraw_braille && block == 0x2800);
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}
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/* the "index" is actually the entire shape data encoded as ushort */
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ushort
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boxdrawindex(const Glyph *g)
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{
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if (boxdraw_braille && (g->u & ~0xff) == 0x2800)
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return BRL | (uint8_t)g->u;
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if (boxdraw_bold && (g->mode & ATTR_BOLD))
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return BDB | boxdata[(uint8_t)g->u];
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return boxdata[(uint8_t)g->u];
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}
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void
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drawboxes(int x, int y, int cw, int ch, XftColor *fg, XftColor *bg,
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const XftGlyphFontSpec *specs, int len)
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{
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for ( ; len-- > 0; x += cw, specs++)
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drawbox(x, y, cw, ch, fg, bg, (ushort)specs->glyph);
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}
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/* implementation */
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void
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drawbox(int x, int y, int w, int h, XftColor *fg, XftColor *bg, ushort bd)
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{
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ushort cat = bd & ~(BDB | 0xff); /* mask out bold and data */
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if (bd & (BDL | BDA)) {
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/* lines (light/double/heavy/arcs) */
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drawboxlines(x, y, w, h, fg, bd);
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} else if (cat == BBD) {
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/* lower (8-X)/8 block */
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int d = DIV((uint8_t)bd * h, 8);
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XftDrawRect(xd, fg, x, y + d, w, h - d);
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} else if (cat == BBU) {
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/* upper X/8 block */
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XftDrawRect(xd, fg, x, y, w, DIV((uint8_t)bd * h, 8));
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} else if (cat == BBL) {
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/* left X/8 block */
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XftDrawRect(xd, fg, x, y, DIV((uint8_t)bd * w, 8), h);
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} else if (cat == BBR) {
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/* right (8-X)/8 block */
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int d = DIV((uint8_t)bd * w, 8);
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XftDrawRect(xd, fg, x + d, y, w - d, h);
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} else if (cat == BBQ) {
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/* Quadrants */
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int w2 = DIV(w, 2), h2 = DIV(h, 2);
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if (bd & TL)
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XftDrawRect(xd, fg, x, y, w2, h2);
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if (bd & TR)
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XftDrawRect(xd, fg, x + w2, y, w - w2, h2);
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if (bd & BL)
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XftDrawRect(xd, fg, x, y + h2, w2, h - h2);
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if (bd & BR)
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XftDrawRect(xd, fg, x + w2, y + h2, w - w2, h - h2);
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} else if (bd & BBS) {
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/* Shades - data is 1/2/3 for 25%/50%/75% alpha, respectively */
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int d = (uint8_t)bd;
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XftColor xfc;
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XRenderColor xrc = { .alpha = 0xffff };
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xrc.red = DIV(fg->color.red * d + bg->color.red * (4 - d), 4);
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xrc.green = DIV(fg->color.green * d + bg->color.green * (4 - d), 4);
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xrc.blue = DIV(fg->color.blue * d + bg->color.blue * (4 - d), 4);
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XftColorAllocValue(xdpy, xvis, xcmap, &xrc, &xfc);
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XftDrawRect(xd, &xfc, x, y, w, h);
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XftColorFree(xdpy, xvis, xcmap, &xfc);
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} else if (cat == BRL) {
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/* braille, each data bit corresponds to one dot at 2x4 grid */
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int w1 = DIV(w, 2);
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int h1 = DIV(h, 4), h2 = DIV(h, 2), h3 = DIV(3 * h, 4);
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if (bd & 1) XftDrawRect(xd, fg, x, y, w1, h1);
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if (bd & 2) XftDrawRect(xd, fg, x, y + h1, w1, h2 - h1);
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if (bd & 4) XftDrawRect(xd, fg, x, y + h2, w1, h3 - h2);
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if (bd & 8) XftDrawRect(xd, fg, x + w1, y, w - w1, h1);
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if (bd & 16) XftDrawRect(xd, fg, x + w1, y + h1, w - w1, h2 - h1);
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if (bd & 32) XftDrawRect(xd, fg, x + w1, y + h2, w - w1, h3 - h2);
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if (bd & 64) XftDrawRect(xd, fg, x, y + h3, w1, h - h3);
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if (bd & 128) XftDrawRect(xd, fg, x + w1, y + h3, w - w1, h - h3);
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}
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}
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void
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drawboxlines(int x, int y, int w, int h, XftColor *fg, ushort bd)
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{
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/* s: stem thickness. width/8 roughly matches underscore thickness. */
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/* We draw bold as 1.5 * normal-stem and at least 1px thicker. */
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/* doubles draw at least 3px, even when w or h < 3. bold needs 6px. */
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int mwh = MIN(w, h);
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int base_s = MAX(1, DIV(mwh, 8));
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int bold = (bd & BDB) && mwh >= 6; /* possibly ignore boldness */
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int s = bold ? MAX(base_s + 1, DIV(3 * base_s, 2)) : base_s;
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int w2 = DIV(w - s, 2), h2 = DIV(h - s, 2);
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/* the s-by-s square (x + w2, y + h2, s, s) is the center texel. */
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/* The base length (per direction till edge) includes this square. */
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int light = bd & (LL | LU | LR | LD);
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int double_ = bd & (DL | DU | DR | DD);
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if (light) {
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/* d: additional (negative) length to not-draw the center */
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/* texel - at arcs and avoid drawing inside (some) doubles */
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int arc = bd & BDA;
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int multi_light = light & (light - 1);
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int multi_double = double_ & (double_ - 1);
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/* light crosses double only at DH+LV, DV+LH (ref. shapes) */
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int d = arc || (multi_double && !multi_light) ? -s : 0;
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if (bd & LL)
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XftDrawRect(xd, fg, x, y + h2, w2 + s + d, s);
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if (bd & LU)
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XftDrawRect(xd, fg, x + w2, y, s, h2 + s + d);
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if (bd & LR)
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XftDrawRect(xd, fg, x + w2 - d, y + h2, w - w2 + d, s);
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if (bd & LD)
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XftDrawRect(xd, fg, x + w2, y + h2 - d, s, h - h2 + d);
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}
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/* double lines - also align with light to form heavy when combined */
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if (double_) {
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/*
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* going clockwise, for each double-ray: p is additional length
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* to the single-ray nearer to the previous direction, and n to
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* the next. p and n adjust from the base length to lengths
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* which consider other doubles - shorter to avoid intersections
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* (p, n), or longer to draw the far-corner texel (n).
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*/
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int dl = bd & DL, du = bd & DU, dr = bd & DR, dd = bd & DD;
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if (dl) {
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int p = dd ? -s : 0, n = du ? -s : dd ? s : 0;
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XftDrawRect(xd, fg, x, y + h2 + s, w2 + s + p, s);
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XftDrawRect(xd, fg, x, y + h2 - s, w2 + s + n, s);
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}
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if (du) {
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int p = dl ? -s : 0, n = dr ? -s : dl ? s : 0;
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XftDrawRect(xd, fg, x + w2 - s, y, s, h2 + s + p);
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XftDrawRect(xd, fg, x + w2 + s, y, s, h2 + s + n);
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}
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if (dr) {
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int p = du ? -s : 0, n = dd ? -s : du ? s : 0;
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XftDrawRect(xd, fg, x + w2 - p, y + h2 - s, w - w2 + p, s);
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XftDrawRect(xd, fg, x + w2 - n, y + h2 + s, w - w2 + n, s);
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}
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if (dd) {
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int p = dr ? -s : 0, n = dl ? -s : dr ? s : 0;
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XftDrawRect(xd, fg, x + w2 + s, y + h2 - p, s, h - h2 + p);
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XftDrawRect(xd, fg, x + w2 - s, y + h2 - n, s, h - h2 + n);
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}
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}
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}
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214
boxdraw_data.h
Normal file
214
boxdraw_data.h
Normal file
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@ -0,0 +1,214 @@
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/*
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* Copyright 2018 Avi Halachmi (:avih) avihpit@yahoo.com https://github.com/avih
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* MIT/X Consortium License
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*/
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/*
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* U+25XX codepoints data
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*
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* References:
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* http://www.unicode.org/charts/PDF/U2500.pdf
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* http://www.unicode.org/charts/PDF/U2580.pdf
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*
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* Test page:
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* https://github.com/GNOME/vte/blob/master/doc/boxes.txt
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*/
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/* Each shape is encoded as 16-bits. Higher bits are category, lower are data */
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/* Categories (mutually exclusive except BDB): */
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/* For convenience, BDL/BDA/BBS/BDB are 1 bit each, the rest are enums */
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#define BDL (1<<8) /* Box Draw Lines (light/double/heavy) */
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#define BDA (1<<9) /* Box Draw Arc (light) */
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#define BBD (1<<10) /* Box Block Down (lower) X/8 */
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#define BBL (2<<10) /* Box Block Left X/8 */
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#define BBU (3<<10) /* Box Block Upper X/8 */
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#define BBR (4<<10) /* Box Block Right X/8 */
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#define BBQ (5<<10) /* Box Block Quadrants */
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#define BRL (6<<10) /* Box Braille (data is lower byte of U28XX) */
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#define BBS (1<<14) /* Box Block Shades */
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#define BDB (1<<15) /* Box Draw is Bold */
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/* (BDL/BDA) Light/Double/Heavy x Left/Up/Right/Down/Horizontal/Vertical */
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/* Heavy is light+double (literally drawing light+double align to form heavy) */
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#define LL (1<<0)
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#define LU (1<<1)
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#define LR (1<<2)
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#define LD (1<<3)
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#define LH (LL+LR)
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#define LV (LU+LD)
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#define DL (1<<4)
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#define DU (1<<5)
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#define DR (1<<6)
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#define DD (1<<7)
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#define DH (DL+DR)
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#define DV (DU+DD)
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#define HL (LL+DL)
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#define HU (LU+DU)
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#define HR (LR+DR)
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#define HD (LD+DD)
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#define HH (HL+HR)
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#define HV (HU+HD)
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/* (BBQ) Quadrants Top/Bottom x Left/Right */
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#define TL (1<<0)
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#define TR (1<<1)
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#define BL (1<<2)
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#define BR (1<<3)
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/* Data for U+2500 - U+259F except dashes/diagonals */
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static const unsigned short boxdata[256] = {
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/* light lines */
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[0x00] = BDL + LH, /* light horizontal */
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[0x02] = BDL + LV, /* light vertical */
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[0x0c] = BDL + LD + LR, /* light down and right */
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[0x10] = BDL + LD + LL, /* light down and left */
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[0x14] = BDL + LU + LR, /* light up and right */
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[0x18] = BDL + LU + LL, /* light up and left */
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[0x1c] = BDL + LV + LR, /* light vertical and right */
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[0x24] = BDL + LV + LL, /* light vertical and left */
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[0x2c] = BDL + LH + LD, /* light horizontal and down */
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[0x34] = BDL + LH + LU, /* light horizontal and up */
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[0x3c] = BDL + LV + LH, /* light vertical and horizontal */
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[0x74] = BDL + LL, /* light left */
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[0x75] = BDL + LU, /* light up */
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[0x76] = BDL + LR, /* light right */
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[0x77] = BDL + LD, /* light down */
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/* heavy [+light] lines */
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[0x01] = BDL + HH,
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[0x03] = BDL + HV,
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[0x0d] = BDL + HR + LD,
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[0x0e] = BDL + HD + LR,
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[0x0f] = BDL + HD + HR,
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[0x11] = BDL + HL + LD,
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[0x12] = BDL + HD + LL,
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[0x13] = BDL + HD + HL,
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[0x15] = BDL + HR + LU,
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[0x16] = BDL + HU + LR,
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[0x17] = BDL + HU + HR,
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[0x19] = BDL + HL + LU,
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[0x1a] = BDL + HU + LL,
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[0x1b] = BDL + HU + HL,
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[0x1d] = BDL + HR + LV,
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[0x1e] = BDL + HU + LD + LR,
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[0x1f] = BDL + HD + LR + LU,
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[0x20] = BDL + HV + LR,
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[0x21] = BDL + HU + HR + LD,
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[0x22] = BDL + HD + HR + LU,
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[0x23] = BDL + HV + HR,
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[0x25] = BDL + HL + LV,
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[0x26] = BDL + HU + LD + LL,
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[0x27] = BDL + HD + LU + LL,
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[0x28] = BDL + HV + LL,
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[0x29] = BDL + HU + HL + LD,
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[0x2a] = BDL + HD + HL + LU,
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[0x2b] = BDL + HV + HL,
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[0x2d] = BDL + HL + LD + LR,
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[0x2e] = BDL + HR + LL + LD,
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[0x2f] = BDL + HH + LD,
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[0x30] = BDL + HD + LH,
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[0x31] = BDL + HD + HL + LR,
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[0x32] = BDL + HR + HD + LL,
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[0x33] = BDL + HH + HD,
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[0x35] = BDL + HL + LU + LR,
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[0x36] = BDL + HR + LU + LL,
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[0x37] = BDL + HH + LU,
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[0x38] = BDL + HU + LH,
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[0x39] = BDL + HU + HL + LR,
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[0x3a] = BDL + HU + HR + LL,
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[0x3b] = BDL + HH + HU,
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[0x3d] = BDL + HL + LV + LR,
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[0x3e] = BDL + HR + LV + LL,
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[0x3f] = BDL + HH + LV,
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[0x40] = BDL + HU + LH + LD,
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[0x41] = BDL + HD + LH + LU,
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[0x42] = BDL + HV + LH,
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[0x43] = BDL + HU + HL + LD + LR,
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[0x44] = BDL + HU + HR + LD + LL,
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[0x45] = BDL + HD + HL + LU + LR,
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[0x46] = BDL + HD + HR + LU + LL,
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[0x47] = BDL + HH + HU + LD,
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[0x48] = BDL + HH + HD + LU,
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[0x49] = BDL + HV + HL + LR,
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[0x4a] = BDL + HV + HR + LL,
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[0x4b] = BDL + HV + HH,
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[0x78] = BDL + HL,
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[0x79] = BDL + HU,
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[0x7a] = BDL + HR,
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[0x7b] = BDL + HD,
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[0x7c] = BDL + HR + LL,
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[0x7d] = BDL + HD + LU,
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[0x7e] = BDL + HL + LR,
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[0x7f] = BDL + HU + LD,
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/* double [+light] lines */
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[0x50] = BDL + DH,
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[0x51] = BDL + DV,
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[0x52] = BDL + DR + LD,
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[0x53] = BDL + DD + LR,
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[0x54] = BDL + DR + DD,
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[0x55] = BDL + DL + LD,
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[0x56] = BDL + DD + LL,
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[0x57] = BDL + DL + DD,
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[0x58] = BDL + DR + LU,
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[0x59] = BDL + DU + LR,
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[0x5a] = BDL + DU + DR,
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[0x5b] = BDL + DL + LU,
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[0x5c] = BDL + DU + LL,
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[0x5d] = BDL + DL + DU,
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[0x5e] = BDL + DR + LV,
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[0x5f] = BDL + DV + LR,
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[0x60] = BDL + DV + DR,
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[0x61] = BDL + DL + LV,
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[0x62] = BDL + DV + LL,
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[0x63] = BDL + DV + DL,
|
||||
[0x64] = BDL + DH + LD,
|
||||
[0x65] = BDL + DD + LH,
|
||||
[0x66] = BDL + DD + DH,
|
||||
[0x67] = BDL + DH + LU,
|
||||
[0x68] = BDL + DU + LH,
|
||||
[0x69] = BDL + DH + DU,
|
||||
[0x6a] = BDL + DH + LV,
|
||||
[0x6b] = BDL + DV + LH,
|
||||
[0x6c] = BDL + DH + DV,
|
||||
|
||||
/* (light) arcs */
|
||||
[0x6d] = BDA + LD + LR,
|
||||
[0x6e] = BDA + LD + LL,
|
||||
[0x6f] = BDA + LU + LL,
|
||||
[0x70] = BDA + LU + LR,
|
||||
|
||||
/* Lower (Down) X/8 block (data is 8 - X) */
|
||||
[0x81] = BBD + 7, [0x82] = BBD + 6, [0x83] = BBD + 5, [0x84] = BBD + 4,
|
||||
[0x85] = BBD + 3, [0x86] = BBD + 2, [0x87] = BBD + 1, [0x88] = BBD + 0,
|
||||
|
||||
/* Left X/8 block (data is X) */
|
||||
[0x89] = BBL + 7, [0x8a] = BBL + 6, [0x8b] = BBL + 5, [0x8c] = BBL + 4,
|
||||
[0x8d] = BBL + 3, [0x8e] = BBL + 2, [0x8f] = BBL + 1,
|
||||
|
||||
/* upper 1/2 (4/8), 1/8 block (X), right 1/2, 1/8 block (8-X) */
|
||||
[0x80] = BBU + 4, [0x94] = BBU + 1,
|
||||
[0x90] = BBR + 4, [0x95] = BBR + 7,
|
||||
|
||||
/* Quadrants */
|
||||
[0x96] = BBQ + BL,
|
||||
[0x97] = BBQ + BR,
|
||||
[0x98] = BBQ + TL,
|
||||
[0x99] = BBQ + TL + BL + BR,
|
||||
[0x9a] = BBQ + TL + BR,
|
||||
[0x9b] = BBQ + TL + TR + BL,
|
||||
[0x9c] = BBQ + TL + TR + BR,
|
||||
[0x9d] = BBQ + TR,
|
||||
[0x9e] = BBQ + BL + TR,
|
||||
[0x9f] = BBQ + BL + TR + BR,
|
||||
|
||||
/* Shades, data is an alpha value in 25% units (1/4, 1/2, 3/4) */
|
||||
[0x91] = BBS + 1, [0x92] = BBS + 2, [0x93] = BBS + 3,
|
||||
|
||||
/* U+2504 - U+250B, U+254C - U+254F: unsupported (dashes) */
|
||||
/* U+2571 - U+2573: unsupported (diagonals) */
|
||||
};
|
||||
12
config.h
12
config.h
|
|
@ -64,6 +64,18 @@ int ximspot_update_interval = 1000;
|
|||
*/
|
||||
static unsigned int cursorthickness = 2;
|
||||
|
||||
/*
|
||||
* 1: render most of the lines/blocks characters without using the font for
|
||||
* perfect alignment between cells (U2500 - U259F except dashes/diagonals).
|
||||
* Bold affects lines thickness if boxdraw_bold is not 0. Italic is ignored.
|
||||
* 0: disable (render all U25XX glyphs normally from the font).
|
||||
*/
|
||||
const int boxdraw = 1;
|
||||
const int boxdraw_bold = 1;
|
||||
|
||||
/* braille (U28XX): 1: render as adjacent "pixels", 0: use font */
|
||||
const int boxdraw_braille = 1;
|
||||
|
||||
/*
|
||||
* bell volume. It must be a value between -100 and 100. Use 0 for disabling
|
||||
* it
|
||||
|
|
|
|||
3
st.c
3
st.c
|
|
@ -1295,6 +1295,9 @@ tsetchar(Rune u, Glyph *attr, int x, int y)
|
|||
term.dirty[y] = 1;
|
||||
term.line[y][x] = *attr;
|
||||
term.line[y][x].u = u;
|
||||
|
||||
if (isboxdraw(u))
|
||||
term.line[y][x].mode |= ATTR_BOXDRAW;
|
||||
}
|
||||
|
||||
void
|
||||
|
|
|
|||
10
st.h
10
st.h
|
|
@ -33,6 +33,7 @@ enum glyph_attribute {
|
|||
ATTR_WRAP = 1 << 8,
|
||||
ATTR_WIDE = 1 << 9,
|
||||
ATTR_WDUMMY = 1 << 10,
|
||||
ATTR_BOXDRAW = 1 << 11,
|
||||
ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
|
||||
};
|
||||
|
||||
|
|
@ -121,6 +122,14 @@ void *xmalloc(size_t);
|
|||
void *xrealloc(void *, size_t);
|
||||
char *xstrdup(char *);
|
||||
|
||||
int isboxdraw(Rune);
|
||||
ushort boxdrawindex(const Glyph *);
|
||||
#ifdef XFT_VERSION
|
||||
/* only exposed to x.c, otherwise we'll need Xft.h for the types */
|
||||
void boxdraw_xinit(Display *, Colormap, XftDraw *, Visual *);
|
||||
void drawboxes(int, int, int, int, XftColor *, XftColor *, const XftGlyphFontSpec *, int);
|
||||
#endif
|
||||
|
||||
/* config.h globals */
|
||||
extern char *utmp;
|
||||
extern char *stty_args;
|
||||
|
|
@ -131,6 +140,7 @@ extern char *termname;
|
|||
extern unsigned int tabspaces;
|
||||
extern unsigned int defaultfg;
|
||||
extern unsigned int defaultbg;
|
||||
extern const int boxdraw, boxdraw_bold, boxdraw_braille;
|
||||
extern float alpha;
|
||||
extern MouseKey mkeys[];
|
||||
extern int ximspot_update_interval;
|
||||
|
|
|
|||
21
x.c
21
x.c
|
|
@ -1294,6 +1294,8 @@ xinit(int cols, int rows)
|
|||
xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
|
||||
if (xsel.xtarget == None)
|
||||
xsel.xtarget = XA_STRING;
|
||||
|
||||
boxdraw_xinit(xw.dpy, xw.cmap, xw.draw, xw.vis);
|
||||
}
|
||||
|
||||
int
|
||||
|
|
@ -1340,8 +1342,13 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
|
|||
yp = winy + font->ascent + win.cyo;
|
||||
}
|
||||
|
||||
/* Lookup character index with default font. */
|
||||
glyphidx = XftCharIndex(xw.dpy, font->match, rune);
|
||||
if (mode & ATTR_BOXDRAW) {
|
||||
/* minor shoehorning: boxdraw uses only this ushort */
|
||||
glyphidx = boxdrawindex(&glyphs[i]);
|
||||
} else {
|
||||
/* Lookup character index with default font. */
|
||||
glyphidx = XftCharIndex(xw.dpy, font->match, rune);
|
||||
}
|
||||
if (glyphidx) {
|
||||
specs[numspecs].font = font->match;
|
||||
specs[numspecs].glyph = glyphidx;
|
||||
|
|
@ -1541,8 +1548,12 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i
|
|||
r.width = width;
|
||||
XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
|
||||
|
||||
/* Render the glyphs. */
|
||||
XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
|
||||
if (base.mode & ATTR_BOXDRAW) {
|
||||
drawboxes(winx, winy, width / len, win.ch, fg, bg, specs, len);
|
||||
} else {
|
||||
/* Render the glyphs. */
|
||||
XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
|
||||
}
|
||||
|
||||
/* Render underline and strikethrough. */
|
||||
if (base.mode & ATTR_UNDERLINE) {
|
||||
|
|
@ -1585,7 +1596,7 @@ xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
|
|||
/*
|
||||
* Select the right color for the right mode.
|
||||
*/
|
||||
g.mode &= ATTR_BOLD|ATTR_ITALIC|ATTR_UNDERLINE|ATTR_STRUCK|ATTR_WIDE;
|
||||
g.mode &= ATTR_BOLD|ATTR_ITALIC|ATTR_UNDERLINE|ATTR_STRUCK|ATTR_WIDE|ATTR_BOXDRAW;
|
||||
|
||||
if (IS_SET(MODE_REVERSE)) {
|
||||
g.mode |= ATTR_REVERSE;
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user