Initial commit

patch/alpha.c

@@ -0,0 +1,19 @@
+float
+clamp(float value, float lower, float upper) {
+	if (value < lower)
+		return lower;
+	if (value > upper)
+		return upper;
+	return value;
+}
+
+void
+changealpha(const Arg *arg)
+{
+	if ((alpha > 0 && arg->f < 0) || (alpha < 1 && arg->f > 0))
+		alpha += arg->f;
+	alpha = clamp(alpha, 0.0, 1.0);
+	xloadcols();
+	redraw();
+}
+

patch/alpha.h

@@ -0,0 +1,2 @@
+static float clamp(float value, float lower, float upper);
+static void changealpha(const Arg *);

patch/boxdraw.c

@@ -0,0 +1,192 @@
+/*
+ * Copyright 2018 Avi Halachmi (:avih) avihpit@yahoo.com https://github.com/avih
+ * MIT/X Consortium License
+ */
+
+#include <X11/Xft/Xft.h>
+
+/* Rounded non-negative integers division of n / d  */
+#define DIV(n, d) (((n) + (d) / 2) / (d))
+
+static Display *xdpy;
+static Colormap xcmap;
+static XftDraw *xd;
+static Visual *xvis;
+
+static void drawbox(int, int, int, int, XftColor *, XftColor *, ushort);
+static void drawboxlines(int, int, int, int, XftColor *, ushort);
+
+/* public API */
+
+void
+boxdraw_xinit(Display *dpy, Colormap cmap, XftDraw *draw, Visual *vis)
+{
+	xdpy = dpy; xcmap = cmap; xd = draw, xvis = vis;
+}
+
+int
+isboxdraw(Rune u)
+{
+	Rune block = u & ~0xff;
+	return (boxdraw && block == 0x2500 && boxdata[(uint8_t)u]) ||
+	       (boxdraw_braille && block == 0x2800);
+}
+
+/* the "index" is actually the entire shape data encoded as ushort */
+ushort
+boxdrawindex(const Glyph *g)
+{
+	if (boxdraw_braille && (g->u & ~0xff) == 0x2800)
+		return BRL | (uint8_t)g->u;
+	if (boxdraw_bold && (g->mode & ATTR_BOLD))
+		return BDB | boxdata[(uint8_t)g->u];
+	return boxdata[(uint8_t)g->u];
+}
+
+void
+drawboxes(int x, int y, int cw, int ch, XftColor *fg, XftColor *bg,
+          const XftGlyphFontSpec *specs, int len)
+{
+	for ( ; len-- > 0; x += cw, specs++)
+		drawbox(x, y, cw, ch, fg, bg, (ushort)specs->glyph);
+}
+
+/* implementation */
+
+void
+drawbox(int x, int y, int w, int h, XftColor *fg, XftColor *bg, ushort bd)
+{
+	ushort cat = bd & ~(BDB | 0xff);  /* mask out bold and data */
+	if (bd & (BDL | BDA)) {
+		/* lines (light/double/heavy/arcs) */
+		drawboxlines(x, y, w, h, fg, bd);
+
+	} else if (cat == BBD) {
+		/* lower (8-X)/8 block */
+		int d = DIV((uint8_t)bd * h, 8);
+		XftDrawRect(xd, fg, x, y + d, w, h - d);
+
+	} else if (cat == BBU) {
+		/* upper X/8 block */
+		XftDrawRect(xd, fg, x, y, w, DIV((uint8_t)bd * h, 8));
+
+	} else if (cat == BBL) {
+		/* left X/8 block */
+		XftDrawRect(xd, fg, x, y, DIV((uint8_t)bd * w, 8), h);
+
+	} else if (cat == BBR) {
+		/* right (8-X)/8 block */
+		int d = DIV((uint8_t)bd * w, 8);
+		XftDrawRect(xd, fg, x + d, y, w - d, h);
+
+	} else if (cat == BBQ) {
+		/* Quadrants */
+		int w2 = DIV(w, 2), h2 = DIV(h, 2);
+		if (bd & TL)
+			XftDrawRect(xd, fg, x, y, w2, h2);
+		if (bd & TR)
+			XftDrawRect(xd, fg, x + w2, y, w - w2, h2);
+		if (bd & BL)
+			XftDrawRect(xd, fg, x, y + h2, w2, h - h2);
+		if (bd & BR)
+			XftDrawRect(xd, fg, x + w2, y + h2, w - w2, h - h2);
+
+	} else if (bd & BBS) {
+		/* Shades - data is 1/2/3 for 25%/50%/75% alpha, respectively */
+		int d = (uint8_t)bd;
+		XftColor xfc;
+		XRenderColor xrc = { .alpha = 0xffff };
+
+		xrc.red = DIV(fg->color.red * d + bg->color.red * (4 - d), 4);
+		xrc.green = DIV(fg->color.green * d + bg->color.green * (4 - d), 4);
+		xrc.blue = DIV(fg->color.blue * d + bg->color.blue * (4 - d), 4);
+
+		XftColorAllocValue(xdpy, xvis, xcmap, &xrc, &xfc);
+		XftDrawRect(xd, &xfc, x, y, w, h);
+		XftColorFree(xdpy, xvis, xcmap, &xfc);
+
+	} else if (cat == BRL) {
+		/* braille, each data bit corresponds to one dot at 2x4 grid */
+		int w1 = DIV(w, 2);
+		int h1 = DIV(h, 4), h2 = DIV(h, 2), h3 = DIV(3 * h, 4);
+
+		if (bd & 1)   XftDrawRect(xd, fg, x, y, w1, h1);
+		if (bd & 2)   XftDrawRect(xd, fg, x, y + h1, w1, h2 - h1);
+		if (bd & 4)   XftDrawRect(xd, fg, x, y + h2, w1, h3 - h2);
+		if (bd & 8)   XftDrawRect(xd, fg, x + w1, y, w - w1, h1);
+		if (bd & 16)  XftDrawRect(xd, fg, x + w1, y + h1, w - w1, h2 - h1);
+		if (bd & 32)  XftDrawRect(xd, fg, x + w1, y + h2, w - w1, h3 - h2);
+		if (bd & 64)  XftDrawRect(xd, fg, x, y + h3, w1, h - h3);
+		if (bd & 128) XftDrawRect(xd, fg, x + w1, y + h3, w - w1, h - h3);
+
+	}
+}
+
+void
+drawboxlines(int x, int y, int w, int h, XftColor *fg, ushort bd)
+{
+	/* s: stem thickness. width/8 roughly matches underscore thickness. */
+	/* We draw bold as 1.5 * normal-stem and at least 1px thicker.      */
+	/* doubles draw at least 3px, even when w or h < 3. bold needs 6px. */
+	int mwh = MIN(w, h);
+	int base_s = MAX(1, DIV(mwh, 8));
+	int bold = (bd & BDB) && mwh >= 6;  /* possibly ignore boldness */
+	int s = bold ? MAX(base_s + 1, DIV(3 * base_s, 2)) : base_s;
+	int w2 = DIV(w - s, 2), h2 = DIV(h - s, 2);
+	/* the s-by-s square (x + w2, y + h2, s, s) is the center texel.    */
+	/* The base length (per direction till edge) includes this square.  */
+
+	int light = bd & (LL | LU | LR | LD);
+	int double_ = bd & (DL | DU | DR | DD);
+
+	if (light) {
+		/* d: additional (negative) length to not-draw the center   */
+		/* texel - at arcs and avoid drawing inside (some) doubles  */
+		int arc = bd & BDA;
+		int multi_light = light & (light - 1);
+		int multi_double = double_ & (double_ - 1);
+		/* light crosses double only at DH+LV, DV+LH (ref. shapes)  */
+		int d = arc || (multi_double && !multi_light) ? -s : 0;
+
+		if (bd & LL)
+			XftDrawRect(xd, fg, x, y + h2, w2 + s + d, s);
+		if (bd & LU)
+			XftDrawRect(xd, fg, x + w2, y, s, h2 + s + d);
+		if (bd & LR)
+			XftDrawRect(xd, fg, x + w2 - d, y + h2, w - w2 + d, s);
+		if (bd & LD)
+			XftDrawRect(xd, fg, x + w2, y + h2 - d, s, h - h2 + d);
+	}
+
+	/* double lines - also align with light to form heavy when combined */
+	if (double_) {
+		/*
+		* going clockwise, for each double-ray: p is additional length
+		* to the single-ray nearer to the previous direction, and n to
+		* the next. p and n adjust from the base length to lengths
+		* which consider other doubles - shorter to avoid intersections
+		* (p, n), or longer to draw the far-corner texel (n).
+		*/
+		int dl = bd & DL, du = bd & DU, dr = bd & DR, dd = bd & DD;
+		if (dl) {
+			int p = dd ? -s : 0, n = du ? -s : dd ? s : 0;
+			XftDrawRect(xd, fg, x, y + h2 + s, w2 + s + p, s);
+			XftDrawRect(xd, fg, x, y + h2 - s, w2 + s + n, s);
+		}
+		if (du) {
+			int p = dl ? -s : 0, n = dr ? -s : dl ? s : 0;
+			XftDrawRect(xd, fg, x + w2 - s, y, s, h2 + s + p);
+			XftDrawRect(xd, fg, x + w2 + s, y, s, h2 + s + n);
+		}
+		if (dr) {
+			int p = du ? -s : 0, n = dd ? -s : du ? s : 0;
+			XftDrawRect(xd, fg, x + w2 - p, y + h2 - s, w - w2 + p, s);
+			XftDrawRect(xd, fg, x + w2 - n, y + h2 + s, w - w2 + n, s);
+		}
+		if (dd) {
+			int p = dr ? -s : 0, n = dl ? -s : dr ? s : 0;
+			XftDrawRect(xd, fg, x + w2 + s, y + h2 - p, s, h - h2 + p);
+			XftDrawRect(xd, fg, x + w2 - s, y + h2 - n, s, h - h2 + n);
+		}
+	}
+}

patch/boxdraw.h

@@ -0,0 +1,214 @@
+/*
+ * Copyright 2018 Avi Halachmi (:avih) avihpit@yahoo.com https://github.com/avih
+ * MIT/X Consortium License
+ */
+
+/*
+ * U+25XX codepoints data
+ *
+ * References:
+ *   http://www.unicode.org/charts/PDF/U2500.pdf
+ *   http://www.unicode.org/charts/PDF/U2580.pdf
+ *
+ * Test page:
+ *   https://github.com/GNOME/vte/blob/master/doc/boxes.txt
+ */
+
+/* Each shape is encoded as 16-bits. Higher bits are category, lower are data */
+/* Categories (mutually exclusive except BDB): */
+/* For convenience, BDL/BDA/BBS/BDB are 1 bit each, the rest are enums */
+#define BDL (1<<8)   /* Box Draw Lines (light/double/heavy) */
+#define BDA (1<<9)   /* Box Draw Arc (light) */
+
+#define BBD (1<<10)  /* Box Block Down (lower) X/8 */
+#define BBL (2<<10)  /* Box Block Left X/8 */
+#define BBU (3<<10)  /* Box Block Upper X/8 */
+#define BBR (4<<10)  /* Box Block Right X/8 */
+#define BBQ (5<<10)  /* Box Block Quadrants */
+#define BRL (6<<10)  /* Box Braille (data is lower byte of U28XX) */
+
+#define BBS (1<<14)  /* Box Block Shades */
+#define BDB (1<<15)  /* Box Draw is Bold */
+
+/* (BDL/BDA) Light/Double/Heavy x Left/Up/Right/Down/Horizontal/Vertical      */
+/* Heavy is light+double (literally drawing light+double align to form heavy) */
+#define LL (1<<0)
+#define LU (1<<1)
+#define LR (1<<2)
+#define LD (1<<3)
+#define LH (LL+LR)
+#define LV (LU+LD)
+
+#define DL (1<<4)
+#define DU (1<<5)
+#define DR (1<<6)
+#define DD (1<<7)
+#define DH (DL+DR)
+#define DV (DU+DD)
+
+#define HL (LL+DL)
+#define HU (LU+DU)
+#define HR (LR+DR)
+#define HD (LD+DD)
+#define HH (HL+HR)
+#define HV (HU+HD)
+
+/* (BBQ) Quadrants Top/Bottom x Left/Right */
+#define TL (1<<0)
+#define TR (1<<1)
+#define BL (1<<2)
+#define BR (1<<3)
+
+/* Data for U+2500 - U+259F except dashes/diagonals */
+static const unsigned short boxdata[256] = {
+	/* light lines */
+	[0x00] = BDL + LH,       /* light horizontal */
+	[0x02] = BDL + LV,       /* light vertical */
+	[0x0c] = BDL + LD + LR,  /* light down and right */
+	[0x10] = BDL + LD + LL,  /* light down and left */
+	[0x14] = BDL + LU + LR,  /* light up and right */
+	[0x18] = BDL + LU + LL,  /* light up and left */
+	[0x1c] = BDL + LV + LR,  /* light vertical and right */
+	[0x24] = BDL + LV + LL,  /* light vertical and left */
+	[0x2c] = BDL + LH + LD,  /* light horizontal and down */
+	[0x34] = BDL + LH + LU,  /* light horizontal and up */
+	[0x3c] = BDL + LV + LH,  /* light vertical and horizontal */
+	[0x74] = BDL + LL,       /* light left */
+	[0x75] = BDL + LU,       /* light up */
+	[0x76] = BDL + LR,       /* light right */
+	[0x77] = BDL + LD,       /* light down */
+
+	/* heavy [+light] lines */
+	[0x01] = BDL + HH,
+	[0x03] = BDL + HV,
+	[0x0d] = BDL + HR + LD,
+	[0x0e] = BDL + HD + LR,
+	[0x0f] = BDL + HD + HR,
+	[0x11] = BDL + HL + LD,
+	[0x12] = BDL + HD + LL,
+	[0x13] = BDL + HD + HL,
+	[0x15] = BDL + HR + LU,
+	[0x16] = BDL + HU + LR,
+	[0x17] = BDL + HU + HR,
+	[0x19] = BDL + HL + LU,
+	[0x1a] = BDL + HU + LL,
+	[0x1b] = BDL + HU + HL,
+	[0x1d] = BDL + HR + LV,
+	[0x1e] = BDL + HU + LD + LR,
+	[0x1f] = BDL + HD + LR + LU,
+	[0x20] = BDL + HV + LR,
+	[0x21] = BDL + HU + HR + LD,
+	[0x22] = BDL + HD + HR + LU,
+	[0x23] = BDL + HV + HR,
+	[0x25] = BDL + HL + LV,
+	[0x26] = BDL + HU + LD + LL,
+	[0x27] = BDL + HD + LU + LL,
+	[0x28] = BDL + HV + LL,
+	[0x29] = BDL + HU + HL + LD,
+	[0x2a] = BDL + HD + HL + LU,
+	[0x2b] = BDL + HV + HL,
+	[0x2d] = BDL + HL + LD + LR,
+	[0x2e] = BDL + HR + LL + LD,
+	[0x2f] = BDL + HH + LD,
+	[0x30] = BDL + HD + LH,
+	[0x31] = BDL + HD + HL + LR,
+	[0x32] = BDL + HR + HD + LL,
+	[0x33] = BDL + HH + HD,
+	[0x35] = BDL + HL + LU + LR,
+	[0x36] = BDL + HR + LU + LL,
+	[0x37] = BDL + HH + LU,
+	[0x38] = BDL + HU + LH,
+	[0x39] = BDL + HU + HL + LR,
+	[0x3a] = BDL + HU + HR + LL,
+	[0x3b] = BDL + HH + HU,
+	[0x3d] = BDL + HL + LV + LR,
+	[0x3e] = BDL + HR + LV + LL,
+	[0x3f] = BDL + HH + LV,
+	[0x40] = BDL + HU + LH + LD,
+	[0x41] = BDL + HD + LH + LU,
+	[0x42] = BDL + HV + LH,
+	[0x43] = BDL + HU + HL + LD + LR,
+	[0x44] = BDL + HU + HR + LD + LL,
+	[0x45] = BDL + HD + HL + LU + LR,
+	[0x46] = BDL + HD + HR + LU + LL,
+	[0x47] = BDL + HH + HU + LD,
+	[0x48] = BDL + HH + HD + LU,
+	[0x49] = BDL + HV + HL + LR,
+	[0x4a] = BDL + HV + HR + LL,
+	[0x4b] = BDL + HV + HH,
+	[0x78] = BDL + HL,
+	[0x79] = BDL + HU,
+	[0x7a] = BDL + HR,
+	[0x7b] = BDL + HD,
+	[0x7c] = BDL + HR + LL,
+	[0x7d] = BDL + HD + LU,
+	[0x7e] = BDL + HL + LR,
+	[0x7f] = BDL + HU + LD,
+
+	/* double [+light] lines */
+	[0x50] = BDL + DH,
+	[0x51] = BDL + DV,
+	[0x52] = BDL + DR + LD,
+	[0x53] = BDL + DD + LR,
+	[0x54] = BDL + DR + DD,
+	[0x55] = BDL + DL + LD,
+	[0x56] = BDL + DD + LL,
+	[0x57] = BDL + DL + DD,
+	[0x58] = BDL + DR + LU,
+	[0x59] = BDL + DU + LR,
+	[0x5a] = BDL + DU + DR,
+	[0x5b] = BDL + DL + LU,
+	[0x5c] = BDL + DU + LL,
+	[0x5d] = BDL + DL + DU,
+	[0x5e] = BDL + DR + LV,
+	[0x5f] = BDL + DV + LR,
+	[0x60] = BDL + DV + DR,
+	[0x61] = BDL + DL + LV,
+	[0x62] = BDL + DV + LL,
+	[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) */
+};

patch/font2.c

@@ -0,0 +1,98 @@
+int
+xloadsparefont(FcPattern *pattern, int flags)
+{
+	FcPattern *match;
+	FcResult result;
+
+	match = FcFontMatch(NULL, pattern, &result);
+	if (!match) {
+		return 1;
+	}
+
+	if (!(frc[frclen].font = XftFontOpenPattern(xw.dpy, match))) {
+		FcPatternDestroy(match);
+		return 1;
+	}
+
+	frc[frclen].flags = flags;
+	/* Believe U+0000 glyph will present in each default font */
+	frc[frclen].unicodep = 0;
+	frclen++;
+
+	return 0;
+}
+
+void
+xloadsparefonts(void)
+{
+	FcPattern *pattern;
+	double fontval;
+	int fc;
+	char **fp;
+
+	if (frclen != 0)
+		die("can't embed spare fonts. cache isn't empty");
+
+	/* Calculate count of spare fonts */
+	fc = sizeof(font2) / sizeof(*font2);
+	if (fc == 0)
+		return;
+
+	/* Allocate memory for cache entries. */
+	if (frccap < 4 * fc) {
+		frccap += 4 * fc - frccap;
+		frc = xrealloc(frc, frccap * sizeof(Fontcache));
+	}
+
+	for (fp = font2; fp - font2 < fc; ++fp) {
+
+		if (**fp == '-')
+			pattern = XftXlfdParse(*fp, False, False);
+		else
+			pattern = FcNameParse((FcChar8 *)*fp);
+
+		if (!pattern)
+			die("can't open spare font %s\n", *fp);
+
+		if (defaultfontsize > 0 && defaultfontsize != usedfontsize) {
+			if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
+					FcResultMatch) {
+				fontval *= usedfontsize / defaultfontsize;
+				FcPatternDel(pattern, FC_PIXEL_SIZE);
+				FcPatternDel(pattern, FC_SIZE);
+				FcPatternAddDouble(pattern, FC_PIXEL_SIZE, fontval);
+			} else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
+					FcResultMatch) {
+				fontval *= usedfontsize / defaultfontsize;
+				FcPatternDel(pattern, FC_PIXEL_SIZE);
+				FcPatternDel(pattern, FC_SIZE);
+				FcPatternAddDouble(pattern, FC_SIZE, fontval);
+			}
+		}
+
+		FcPatternAddBool(pattern, FC_SCALABLE, 1);
+
+		FcConfigSubstitute(NULL, pattern, FcMatchPattern);
+		XftDefaultSubstitute(xw.dpy, xw.scr, pattern);
+
+		if (xloadsparefont(pattern, FRC_NORMAL))
+			die("can't open spare font %s\n", *fp);
+
+		FcPatternDel(pattern, FC_SLANT);
+		FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
+		if (xloadsparefont(pattern, FRC_ITALIC))
+			die("can't open spare font %s\n", *fp);
+
+		FcPatternDel(pattern, FC_WEIGHT);
+		FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
+		if (xloadsparefont(pattern, FRC_ITALICBOLD))
+			die("can't open spare font %s\n", *fp);
+
+		FcPatternDel(pattern, FC_SLANT);
+		FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
+		if (xloadsparefont(pattern, FRC_BOLD))
+			die("can't open spare font %s\n", *fp);
+
+		FcPatternDestroy(pattern);
+	}
+}

patch/font2.h

@@ -0,0 +1,2 @@
+static int xloadsparefont(FcPattern *, int);
+static void xloadsparefonts(void);

patch/keyboardselect_reflow.txt

@@ -0,0 +1,29 @@
+Shortcuts in keyboard selection mode:
+
+h, j, k, l:              move cursor left/down/up/right (also with arrow keys)
+H, M, L:                 move cursor to the top/middle/bottom of the screen
+Home, End:               move cursor to the top/bottom of the screen
+Backspace or 0, $ or A:  move cursor to the beginning/end of the line
+^ or I:                  move cursor to the beginning of the indented line
+!:                       move cursor to the middle of the row
+_:                       move cursor to the right edge of the screen
+*:                       move cursor to the center of the screen
+w, W                     jump forward to the start of a word
+e, E                     jump forward to the end of a word
+b, B                     jump backward to the start of a word
+g, G:                    go to the first/last line
+z:                       center the screen on the cursor
+PgUp or K, PgDown or J:  scroll the page up/down
+/, ?:                    activate input mode and search up/down
+n, N:                    repeat last search and search forward/backward
+f, F:                    jump forward/backward to the given character
+t, T:                    jump forward/backward to before the given character
+; or r                   repeat previous f, t, F or T movement and move forward
+, or R                   repeat previous f, t, F or T movement and move backward
+v:                       toggle selection mode
+V:                       toggle line selection mode
+s:                       toggle regular/rectangular selection type
+y:                       yank (copy) selected text
+0 - 9:                   set the quantifier
+Return:                  quit keyboard_select, yank and keep the highlight of the selection
+Escape, q:               quit keyboard_select/exit input mode/exit selection mode/reset quantifier

patch/keyboardselect_st.c

@@ -0,0 +1,229 @@
+void set_notifmode(int type, KeySym ksym)
+{
+	static char *lib[] = { " MOVE ", " SEL  "};
+	static Glyph *g, *deb, *fin;
+	static int col, bot;
+
+	if (ksym == -1) {
+		free(g);
+		col = term.col, bot = term.bot;
+		g = xmalloc(col * sizeof(Glyph));
+		memcpy(g, term.line[bot], col * sizeof(Glyph));
+
+	} else if (ksym == -2)
+		memcpy(term.line[bot], g, col * sizeof(Glyph));
+
+	if ( type < 2 ) {
+		char *z = lib[type];
+		for (deb = &term.line[bot][col - 6], fin = &term.line[bot][col]; deb < fin; z++, deb++)
+			deb->mode = ATTR_REVERSE,
+			deb->u = *z,
+			deb->fg = defaultfg, deb->bg = defaultbg;
+	} else if (type < 5)
+		memcpy(term.line[bot], g, col * sizeof(Glyph));
+	else {
+		for (deb = &term.line[bot][0], fin = &term.line[bot][col]; deb < fin; deb++)
+			deb->mode = ATTR_REVERSE,
+			deb->u = ' ',
+			deb->fg = defaultfg, deb->bg = defaultbg;
+		term.line[bot][0].u = ksym;
+	}
+
+	term.dirty[bot] = 1;
+	drawregion(0, bot, col, bot + 1);
+}
+
+Glyph getglyph(Term term, int y, int x)
+{
+	Glyph g;
+	int realy = y - term.scr;
+	if(realy >= 0) {
+		g = term.line[realy][x];
+	} else {
+		realy = term.histi - term.scr + y + 1;
+		g = term.hist[realy][x];
+	}
+	return g;
+}
+
+void select_or_drawcursor(int selectsearch_mode, int type)
+{
+	int done = 0;
+
+	if (selectsearch_mode & 1) {
+		selextend(term.c.x, term.c.y, type, done);
+		xsetsel(getsel());
+	} else {
+		xdrawcursor(term.c.x, term.c.y, getglyph(term, term.c.y, term.c.x),
+		            term.ocx, term.ocy, getglyph(term, term.ocy, term.ocx));
+	}
+}
+
+void search(int selectsearch_mode, Rune *target, int ptarget, int incr, int type, TCursor *cu)
+{
+	Rune *r;
+	int i, bound = (term.col * cu->y + cu->x) * (incr > 0) + incr;
+
+	for (i = term.col * term.c.y + term.c.x + incr; i != bound; i += incr) {
+		for (r = target; r - target < ptarget; r++) {
+			if (*r == term.line[(i + r - target) / term.col][(i + r - target) % term.col].u) {
+				if (r - target == ptarget - 1)
+					break;
+			} else {
+				r = NULL;
+				break;
+			}
+		}
+		if (r != NULL)
+			break;
+	}
+
+	if (i != bound) {
+		term.c.y = i / term.col, term.c.x = i % term.col;
+		select_or_drawcursor(selectsearch_mode, type);
+	}
+}
+
+int trt_kbdselect(KeySym ksym, char *buf, int len)
+{
+	static TCursor cu;
+	static Rune target[64];
+	static int type = 1, ptarget, in_use;
+	static int sens, quant;
+	static char selectsearch_mode;
+	int i, bound, *xy;
+
+	if (selectsearch_mode & 2) {
+		if (ksym == XK_Return) {
+			selectsearch_mode ^= 2;
+			set_notifmode(selectsearch_mode, -2);
+			if (ksym == XK_Escape)
+				ptarget = 0;
+			return 0;
+		} else if (ksym == XK_BackSpace) {
+			if (!ptarget)
+				return 0;
+			term.line[term.bot][ptarget--].u = ' ';
+		} else if (len < 1) {
+			return 0;
+		} else if (ptarget == term.col || ksym == XK_Escape) {
+			return 0;
+		} else {
+			utf8decode(buf, &target[ptarget++], len);
+			term.line[term.bot][ptarget].u = target[ptarget - 1];
+		}
+
+		if (ksym != XK_BackSpace)
+			search(selectsearch_mode, &target[0], ptarget, sens, type, &cu);
+
+		term.dirty[term.bot] = 1;
+		drawregion(0, term.bot, term.col, term.bot + 1);
+		return 0;
+	}
+
+	switch (ksym) {
+	case -1:
+		in_use = 1;
+		cu.x = term.c.x, cu.y = term.c.y;
+		set_notifmode(0, ksym);
+		return MODE_KBDSELECT;
+	case XK_s:
+		if (selectsearch_mode & 1)
+			selclear();
+		else
+			selstart(term.c.x, term.c.y, 0);
+		set_notifmode(selectsearch_mode ^= 1, ksym);
+		break;
+	case XK_t:
+		selextend(term.c.x, term.c.y, type ^= 3, i = 0);  /* 2 fois */
+		selextend(term.c.x, term.c.y, type, i = 0);
+		break;
+	case XK_slash:
+	case XK_KP_Divide:
+	case XK_question:
+		ksym &= XK_question;                /* Divide to slash */
+		sens = (ksym == XK_slash) ? -1 : 1;
+		ptarget = 0;
+		set_notifmode(15, ksym);
+		selectsearch_mode ^= 2;
+		break;
+	case XK_Escape:
+		if (!in_use)
+			break;
+		selclear();
+	case XK_Return:
+		set_notifmode(4, ksym);
+		term.c.x = cu.x, term.c.y = cu.y;
+		select_or_drawcursor(selectsearch_mode = 0, type);
+		in_use = quant = 0;
+		return MODE_KBDSELECT;
+	case XK_n:
+	case XK_N:
+		if (ptarget)
+			search(selectsearch_mode, &target[0], ptarget, (ksym == XK_n) ? -1 : 1, type, &cu);
+		break;
+	case XK_BackSpace:
+		term.c.x = 0;
+		select_or_drawcursor(selectsearch_mode, type);
+		break;
+	case XK_dollar:
+		term.c.x = term.col - 1;
+		select_or_drawcursor(selectsearch_mode, type);
+		break;
+	case XK_Home:
+		term.c.x = 0, term.c.y = 0;
+		select_or_drawcursor(selectsearch_mode, type);
+		break;
+	case XK_End:
+		term.c.x = cu.x, term.c.y = cu.y;
+		select_or_drawcursor(selectsearch_mode, type);
+		break;
+	case XK_Page_Up:
+	case XK_Page_Down:
+		term.c.y = (ksym == XK_Prior ) ? 0 : cu.y;
+		select_or_drawcursor(selectsearch_mode, type);
+		break;
+	case XK_exclam:
+		term.c.x = term.col >> 1;
+		select_or_drawcursor(selectsearch_mode, type);
+		break;
+	case XK_asterisk:
+	case XK_KP_Multiply:
+		term.c.x = term.col >> 1;
+	case XK_underscore:
+		term.c.y = cu.y >> 1;
+		select_or_drawcursor(selectsearch_mode, type);
+		break;
+	default:
+		if (ksym >= XK_0 && ksym <= XK_9) {                 /* 0-9 keyboard */
+			quant = (quant * 10) + (ksym ^ XK_0);
+			return 0;
+		} else if (ksym >= XK_KP_0 && ksym <= XK_KP_9) {    /* 0-9 numpad */
+			quant = (quant * 10) + (ksym ^ XK_KP_0);
+			return 0;
+		} else if (ksym == XK_k || ksym == XK_h)
+			i = ksym & 1;
+		else if (ksym == XK_l || ksym == XK_j)
+			i = ((ksym & 6) | 4) >> 1;
+		else if ((XK_Home & ksym) != XK_Home || (i = (ksym ^ XK_Home) - 1) > 3)
+			break;
+
+		xy = (i & 1) ? &term.c.y : &term.c.x;
+		sens = (i & 2) ? 1 : -1;
+		bound = (i >> 1 ^ 1) ? 0 : (i ^ 3) ? term.col - 1 : term.bot;
+
+		if (quant == 0)
+			quant++;
+
+		if (*xy == bound && ((sens < 0 && bound == 0) || (sens > 0 && bound > 0)))
+			break;
+
+		*xy += quant * sens;
+		if (*xy < 0 || ( bound > 0 && *xy > bound))
+			*xy = bound;
+
+		select_or_drawcursor(selectsearch_mode, type);
+	}
+	quant = 0;
+	return 0;
+}

patch/keyboardselect_st.h

@@ -0,0 +1,2 @@
+void toggle_winmode(int);
+int trt_kbdselect(KeySym, char *, int);

patch/keyboardselect_x.c

@@ -0,0 +1,7 @@
+void toggle_winmode(int flag) {
+    win.mode ^= flag;
+}
+
+void keyboard_select(const Arg *dummy) {
+    win.mode ^= trt_kbdselect(-1, NULL, 0);
+}

patch/keyboardselect_x.h

@@ -0,0 +1,2 @@
+void toggle_winmode(int);
+void keyboard_select(const Arg *);

patch/scrollback.c

@@ -0,0 +1,43 @@
+void
+kscrolldown(const Arg* a)
+{
+	int n = a->i;
+
+	if (n < 0)
+		n = term.row + n;
+
+	if (n > term.scr)
+		n = term.scr;
+
+	if (term.scr > 0) {
+		term.scr -= n;
+		selscroll(0, -n);
+		tfulldirt();
+	}
+
+	scroll_images(-1*n);
+
+}
+
+void
+kscrollup(const Arg* a)
+{
+	int n = a->i;
+	if (n < 0)
+		n = term.row + n;
+
+	if (term.scr + n > term.histn)
+		n = term.histn - term.scr;
+
+	if (!n)
+		return;
+
+	if (term.scr <= HISTSIZE-n) {
+		term.scr += n;
+		selscroll(0, n);
+		tfulldirt();
+	}
+
+	scroll_images(n);
+
+}

patch/scrollback.h

@@ -0,0 +1,15 @@
+#define TLINE(y) ((y) < term.scr ? term.hist[((y) + term.histi - \
+                     term.scr + HISTSIZE + 1) % HISTSIZE] : \
+                     term.line[(y) - term.scr])
+
+void kscrolldown(const Arg *);
+void kscrollup(const Arg *);
+
+typedef struct {
+	 uint b;
+	 uint mask;
+	 void (*func)(const Arg *);
+	 const Arg arg;
+} MouseKey;
+
+extern MouseKey mkeys[];

patch/st_include.c

@@ -0,0 +1,3 @@
+/* Patches */
+#include "keyboardselect_st.c"
+#include "scrollback.c"

patch/st_include.h

@@ -0,0 +1,3 @@
+/* Patches */
+#include "keyboardselect_st.h"
+#include "scrollback.h"

patch/utils.h

@@ -0,0 +1,23 @@
+/// Dynamic memory-chunk, with (1) datatype size, (2/3) initialized / allocated chunk, (4) content
+typedef struct { uint8_t const elSize; uint32_t init, alloc; char* content; } DynamicArray;
+#define UTF8_ARRAY {4, 0, 0, NULL}
+
+static inline int p_alloc(DynamicArray *s, uint32_t amount) {
+	uint32_t const diff=s->init+s->elSize*amount-s->alloc, nas=s->alloc+max(diff,15)*s->elSize;
+	if (s->alloc < s->init + s->elSize * amount) {
+		char* tmp = realloc(s->content, nas);
+		if (!tmp) return 0;
+		s->alloc = nas, s->content = tmp;
+	}
+	return 1;
+}
+static inline char *view(DynamicArray * s, uint32_t i) { return s->content + i*s->elSize; }
+static inline char *end(DynamicArray *s, uint32_t i) { return s->content +s->init-(i+1)*s->elSize; }
+static inline uint32_t getU32(DynamicArray* s, uint32_t i, int b) { return *((uint32_t*) (b ?view(s,i) :end(s,i))); }
+static char *expand(DynamicArray *s) { if (!p_alloc(s, 1)) return NULL; s->init += s->elSize; return end(s, 0); }
+static inline void pop(DynamicArray* s) { s->init -= s->elSize; }
+static inline void empty(DynamicArray* s) { s->init = 0; }
+static inline int size(DynamicArray const * s) { return s->init / s->elSize; }
+static inline void assign(DynamicArray* s, DynamicArray const *o) {
+	if (p_alloc(s, size(o))) memcpy(s->content, o->content, (s->init=o->init));
+}

patch/x_include.c

@@ -0,0 +1,5 @@
+/* Patches */
+#include "alpha.c"
+#include "boxdraw.c"
+#include "font2.c"
+#include "keyboardselect_x.c"

patch/x_include.h

@@ -0,0 +1,5 @@
+/* Patches */
+#include "alpha.h"
+#include "boxdraw.h"
+#include "font2.h"
+#include "keyboardselect_x.h"