Merge branch 'feat/scrollback' into custom

Reviewed-on: #12

Makefile

@@ -4,7 +4,7 @@
 
 include config.mk
 
-SRC = st.c x.c hb.c
+SRC = st.c x.c boxdraw.c hb.c
 OBJ = $(SRC:.c=.o)
 
 all: options st
@@ -23,6 +23,7 @@ config.h:
 
 st.o: config.h st.h win.h
 x.o: arg.h config.h st.h win.h hb.h
+boxdraw.o: config.h st.h boxdraw_data.h
 hb.o: st.h
 
 $(OBJ): config.h config.mk

boxdraw.c

@@ -0,0 +1,194 @@
+/*
+ * Copyright 2018 Avi Halachmi (:avih) avihpit@yahoo.com https://github.com/avih
+ * MIT/X Consortium License
+ */
+
+#include <X11/Xft/Xft.h>
+#include "st.h"
+#include "boxdraw_data.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);
+		}
+	}
+}

boxdraw_data.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) */
+};

config.def.h

@@ -8,6 +8,20 @@
 static char *font = "Liberation Mono:pixelsize=12:antialias=true:autohint=true";
 static int borderpx = 2;
 
+/*
+ * Override/adjust fontsize of choosen monitors:
+ */
+MonitorConfig monitors_config[] = {
+	// skip = fixed relative points size (monitor dpi)
+	//   =0 : fixed absolute pixel size (default screen dpi)
+	//   >0 : auto absolute pixel size (monitor dpi)
+	//   <0 : auto relative points size (monitor dpi)
+	// {"DP-1", 0}, // BUG:(size=0): not restored to default after back'n'forth
+	{"HDMI-0~1", -20},  // BUG:(ignored DPI=220): = 20 is eqv to 10pt (DPI=110)
+	{"HDMI-0~2", -14},
+};
+float winmovethreshold = 0.6;
+
 /*
  * What program is execed by st depends of these precedence rules:
  * 1: program passed with -e
@@ -56,6 +70,12 @@ int allowwindowops = 0;
 static double minlatency = 8;
 static double maxlatency = 33;
 
+/*
+ * Synchronized-Update timeout in ms
+ * https://gitlab.com/gnachman/iterm2/-/wikis/synchronized-updates-spec
+ */
+static uint su_timeout = 200;
+
 /*
  * blinking timeout (set to 0 to disable blinking) for the terminal blinking
  * attribute.
@@ -67,6 +87,18 @@ static unsigned int blinktimeout = 800;
  */
 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 = 0;
+const int boxdraw_bold = 0;
+
+/* braille (U28XX):  1: render as adjacent "pixels",  0: use font */
+const int boxdraw_braille = 0;
+
 /*
  * bell volume. It must be a value between -100 and 100. Use 0 for disabling
  * it
@@ -93,35 +125,30 @@ char *termname = "st-256color";
  */
 unsigned int tabspaces = 8;
 
+/* bg opacity */
+float alpha = 0.8;
+
 /* Terminal colors (16 first used in escape sequence) */
 static const char *colorname[] = {
 	/* 8 normal colors */
-	"black",
+	[0] = "#282828", /* hard contrast: #1d2021 / soft contrast: #32302f */
-	"red3",
+	[1] = "#cc241d", /* red     */
-	"green3",
+	[2] = "#98971a", /* green   */
-	"yellow3",
+	[3] = "#d79921", /* yellow  */
-	"blue2",
+	[4] = "#458588", /* blue    */
-	"magenta3",
+	[5] = "#b16286", /* magenta */
-	"cyan3",
+	[6] = "#689d6a", /* cyan    */
-	"gray90",
+	[7] = "#a89984", /* white   */
 
 	/* 8 bright colors */
-	"gray50",
+	[8]  = "#928374", /* black   */
-	"red",
+	[9]  = "#fb4934", /* red     */
-	"green",
+	[10] = "#b8bb26", /* green   */
-	"yellow",
+	[11] = "#fabd2f", /* yellow  */
-	"#5c5cff",
+	[12] = "#83a598", /* blue    */
-	"magenta",
+	[13] = "#d3869b", /* magenta */
-	"cyan",
+	[14] = "#8ec07c", /* cyan    */
-	"white",
+	[15] = "#ebdbb2", /* white   */
-
-	[255] = 0,
-
-	/* more colors can be added after 255 to use with DefaultXX */
-	"#cccccc",
-	"#555555",
-	"gray90", /* default foreground colour */
-	"black", /* default background colour */
 };
 
 
@@ -129,9 +156,9 @@ static const char *colorname[] = {
  * Default colors (colorname index)
  * foreground, background, cursor, reverse cursor
  */
-unsigned int defaultfg = 258;
+unsigned int defaultfg = 15;
-unsigned int defaultbg = 259;
+unsigned int defaultbg = 0;
-unsigned int defaultcs = 256;
+unsigned int defaultcs = 15;
 static unsigned int defaultrcs = 257;
 
 /*
@@ -170,6 +197,42 @@ static unsigned int defaultattr = 11;
  */
 static uint forcemousemod = ShiftMask;
 
+/*
+ * Xresources preferences to load at startup
+ */
+ResourcePref resources[] = {
+		{ "font",         STRING,  &font },
+		{ "color0",       STRING,  &colorname[0] },
+		{ "color1",       STRING,  &colorname[1] },
+		{ "color2",       STRING,  &colorname[2] },
+		{ "color3",       STRING,  &colorname[3] },
+		{ "color4",       STRING,  &colorname[4] },
+		{ "color5",       STRING,  &colorname[5] },
+		{ "color6",       STRING,  &colorname[6] },
+		{ "color7",       STRING,  &colorname[7] },
+		{ "color8",       STRING,  &colorname[8] },
+		{ "color9",       STRING,  &colorname[9] },
+		{ "color10",      STRING,  &colorname[10] },
+		{ "color11",      STRING,  &colorname[11] },
+		{ "color12",      STRING,  &colorname[12] },
+		{ "color13",      STRING,  &colorname[13] },
+		{ "color14",      STRING,  &colorname[14] },
+		{ "color15",      STRING,  &colorname[15] },
+		{ "background",   STRING,  &colorname[256] },
+		{ "foreground",   STRING,  &colorname[257] },
+		{ "cursorColor",  STRING,  &colorname[258] },
+		{ "termname",     STRING,  &termname },
+		{ "shell",        STRING,  &shell },
+		{ "minlatency",   INTEGER, &minlatency },
+		{ "maxlatency",   INTEGER, &maxlatency },
+		{ "blinktimeout", INTEGER, &blinktimeout },
+		{ "bellvolume",   INTEGER, &bellvolume },
+		{ "tabspaces",    INTEGER, &tabspaces },
+		{ "borderpx",     INTEGER, &borderpx },
+		{ "cwscale",      FLOAT,   &cwscale },
+		{ "chscale",      FLOAT,   &chscale },
+};
+
 /*
  * Internal mouse shortcuts.
  * Beware that overloading Button1 will disable the selection.
@@ -196,6 +259,7 @@ static Shortcut shortcuts[] = {
 	{ TERMMOD,              XK_Prior,       zoom,           {.f = +1} },
 	{ TERMMOD,              XK_Next,        zoom,           {.f = -1} },
 	{ TERMMOD,              XK_Home,        zoomreset,      {.f =  0} },
+	{ TERMMOD,              XK_End,         refreshxrandr,  {.i =  0} },
 	{ TERMMOD,              XK_C,           clipcopy,       {.i =  0} },
 	{ TERMMOD,              XK_V,           clippaste,      {.i =  0} },
 	{ TERMMOD,              XK_Y,           selpaste,       {.i =  0} },
@@ -474,3 +538,27 @@ static char ascii_printable[] =
 	" !\"#$%&'()*+,-./0123456789:;<=>?"
 	"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
 	"`abcdefghijklmnopqrstuvwxyz{|}~";
+
+/**
+ * Undercurl style. Set UNDERCURL_STYLE to one of the available styles.
+ *
+ * Curly: Dunno how to draw it *shrug*
+ *  _   _   _   _
+ * ( ) ( ) ( ) ( )
+ *	 (_) (_) (_) (_)
+ *
+ * Spiky:
+ * /\  /\   /\	/\
+ *   \/  \/	  \/
+ *
+ * Capped:
+ *	_     _     _
+ * / \   / \   / \
+ *    \_/   \_/
+ */
+// Available styles
+#define UNDERCURL_CURLY 0
+#define UNDERCURL_SPIKY 1
+#define UNDERCURL_CAPPED 2
+// Active style
+#define UNDERCURL_STYLE UNDERCURL_SPIKY

config.mk

@@ -17,10 +17,11 @@ INCS = -I$(X11INC) \
        `$(PKG_CONFIG) --cflags fontconfig` \
        `$(PKG_CONFIG) --cflags freetype2` \
        `$(PKG_CONFIG) --cflags harfbuzz`
-LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft \
+LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft -lXrender\
        `$(PKG_CONFIG) --libs fontconfig` \
-       `$(PKG_CONFIG) --libs freetype2` \
+       `$(PKG_CONFIG) --libs freetype2`
-       `$(PKG_CONFIG) --cflags harfbuzz`
+
+LIBS += -lXrandr
 
 # flags
 STCPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600

st.c

@@ -33,6 +33,7 @@
 #define UTF_SIZ       4
 #define ESC_BUF_SIZ   (128*UTF_SIZ)
 #define ESC_ARG_SIZ   16
+#define CAR_PER_ARG   4
 #define STR_BUF_SIZ   ESC_BUF_SIZ
 #define STR_ARG_SIZ   ESC_ARG_SIZ
 #define HISTSIZE      2000
@@ -44,6 +45,24 @@
 #define ISCONTROLC1(c)		(BETWEEN(c, 0x80, 0x9f))
 #define ISCONTROL(c)		(ISCONTROLC0(c) || ISCONTROLC1(c))
 #define ISDELIM(u)		(u && wcschr(worddelimiters, u))
+#define STRESCARGREST(n)	((n) == 0 ? strescseq.buf : strescseq.argp[(n)-1] + 1)
+#define STRESCARGJUST(n)	(*(strescseq.argp[n]) = '\0', STRESCARGREST(n))
+
+#define TLINE(y) ( \
+	(y) < term.scr ? term.hist[(term.histi + (y) - term.scr + 1 + HISTSIZE) % HISTSIZE] \
+	               : term.line[(y) - term.scr] \
+)
+
+#define TLINEABS(y) ( \
+	(y) < 0 ? term.hist[(term.histi + (y) + 1 + HISTSIZE) % HISTSIZE] : term.line[(y)] \
+)
+
+#define UPDATEWRAPNEXT(alt, col) do { \
+	if ((term.c.state & CURSOR_WRAPNEXT) && term.c.x + term.wrapcwidth[alt] < col) { \
+		term.c.x += term.wrapcwidth[alt]; \
+		term.c.state &= ~CURSOR_WRAPNEXT; \
+	} \
+} while (0);
 
 #define TLINE(y) ( \
 	(y) < term.scr ? term.hist[(term.histi + (y) - term.scr + 1 + HISTSIZE) % HISTSIZE] \
@@ -167,6 +186,7 @@ typedef struct {
 	int arg[ESC_ARG_SIZ];
 	int narg;              /* nb of args */
 	char mode[2];
+	int carg[ESC_ARG_SIZ][CAR_PER_ARG]; /* colon args */
 } CSIEscape;
 
 /* STR Escape sequence structs */
@@ -176,7 +196,7 @@ typedef struct {
 	char *buf;             /* allocated raw string */
 	size_t siz;            /* allocation size */
 	size_t len;            /* raw string length */
-	char *args[STR_ARG_SIZ];
+	char *argp[STR_ARG_SIZ]; /* pointers to the end of nth argument */
 	int narg;              /* nb of args */
 } STREscape;
 
@@ -187,6 +207,7 @@ static void ttywriteraw(const char *, size_t);
 
 static void csidump(void);
 static void csihandle(void);
+static void readcolonargs(char **, int, int[][CAR_PER_ARG]);
 static void csiparse(void);
 static void csireset(void);
 static void osc_color_response(int, int, int);
@@ -274,6 +295,33 @@ static const uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
 static const Rune utfmin[UTF_SIZ + 1] = {       0,    0,  0x80,  0x800,  0x10000};
 static const Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
 
+#include <time.h>
+static int su = 0;
+struct timespec sutv;
+
+static void
+tsync_begin()
+{
+	clock_gettime(CLOCK_MONOTONIC, &sutv);
+	su = 1;
+}
+
+static void
+tsync_end()
+{
+	su = 0;
+}
+
+int
+tinsync(uint timeout)
+{
+	struct timespec now;
+	if (su && !clock_gettime(CLOCK_MONOTONIC, &now)
+	       && TIMEDIFF(now, sutv) >= timeout)
+		su = 0;
+	return su;
+}
+
 ssize_t
 xwrite(int fd, const char *s, size_t len)
 {
@@ -889,6 +937,9 @@ ttynew(const char *line, char *cmd, const char *out, char **args)
 	return cmdfd;
 }
 
+static int twrite_aborted = 0;
+int ttyread_pending() { return twrite_aborted; }
+
 size_t
 ttyread(void)
 {
@@ -897,7 +948,7 @@ ttyread(void)
 	int ret, written;
 
 	/* append read bytes to unprocessed bytes */
-	ret = read(cmdfd, buf+buflen, LEN(buf)-buflen);
+	ret = twrite_aborted ? 1 : read(cmdfd, buf+buflen, LEN(buf)-buflen);
 
 	switch (ret) {
 	case 0:
@@ -905,7 +956,7 @@ ttyread(void)
 	case -1:
 		die("couldn't read from shell: %s\n", strerror(errno));
 	default:
-		buflen += ret;
+		buflen += twrite_aborted ? 0 : ret;
 		written = twrite(buf, buflen, 0);
 		buflen -= written;
 		/* keep any incomplete UTF-8 byte sequence for the next call */
@@ -1066,6 +1117,7 @@ tsetdirtattr(int attr)
 void
 tfulldirt(void)
 {
+	tsync_end();
   	for (int i = 0; i < term.row; i++)
 		term.dirty[i] = 1;
 }
@@ -1352,6 +1404,28 @@ tnewline(int first_col)
 	tmoveto(first_col ? 0 : term.c.x, y);
 }
 
+void
+readcolonargs(char **p, int cursor, int params[][CAR_PER_ARG])
+{
+	int i = 0;
+	for (; i < CAR_PER_ARG; i++)
+		params[cursor][i] = -1;
+
+	if (**p != ':')
+		return;
+
+	char *np = NULL;
+	i = 0;
+
+	while (**p == ':' && i < CAR_PER_ARG) {
+		while (**p == ':')
+			(*p)++;
+		params[cursor][i] = strtol(*p, &np, 10);
+		*p = np;
+		i++;
+	}
+}
+
 void
 csiparse(void)
 {
@@ -1374,6 +1448,7 @@ csiparse(void)
 			v = -1;
 		csiescseq.arg[csiescseq.narg++] = v;
 		p = np;
+		readcolonargs(&p, csiescseq.narg-1, csiescseq.carg);
 		if (*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
 			break;
 		p++;
@@ -1441,6 +1516,9 @@ tsetchar(Rune u, const Glyph *attr, int x, int y)
 	term.line[y][x] = *attr;
 	term.line[y][x].u = u;
 	term.line[y][x].mode |= ATTR_SET;
+
+	if (isboxdraw(u))
+		term.line[y][x].mode |= ATTR_BOXDRAW;
 }
 
 void
@@ -1594,6 +1672,10 @@ tsetattr(const int *attr, int l)
 				ATTR_STRUCK     );
 			term.c.attr.fg = defaultfg;
 			term.c.attr.bg = defaultbg;
+			term.c.attr.ustyle = -1;
+			term.c.attr.ucolor[0] = -1;
+			term.c.attr.ucolor[1] = -1;
+			term.c.attr.ucolor[2] = -1;
 			break;
 		case 1:
 			term.c.attr.mode |= ATTR_BOLD;
@@ -1605,7 +1687,14 @@ tsetattr(const int *attr, int l)
 			term.c.attr.mode |= ATTR_ITALIC;
 			break;
 		case 4:
+			term.c.attr.ustyle = csiescseq.carg[i][0];
+
+			if (term.c.attr.ustyle != 0)
 				term.c.attr.mode |= ATTR_UNDERLINE;
+			else
+				term.c.attr.mode &= ~ATTR_UNDERLINE;
+
+			term.c.attr.mode ^= ATTR_DIRTYUNDERLINE;
 			break;
 		case 5: /* slow blink */
 			/* FALLTHROUGH */
@@ -1656,6 +1745,18 @@ tsetattr(const int *attr, int l)
 		case 49:
 			term.c.attr.bg = defaultbg;
 			break;
+		case 58:
+			term.c.attr.ucolor[0] = csiescseq.carg[i][1];
+			term.c.attr.ucolor[1] = csiescseq.carg[i][2];
+			term.c.attr.ucolor[2] = csiescseq.carg[i][3];
+			term.c.attr.mode ^= ATTR_DIRTYUNDERLINE;
+			break;
+		case 59:
+			term.c.attr.ucolor[0] = -1;
+			term.c.attr.ucolor[1] = -1;
+			term.c.attr.ucolor[2] = -1;
+			term.c.attr.mode ^= ATTR_DIRTYUNDERLINE;
+			break;
 		default:
 			if (BETWEEN(attr[i], 30, 37)) {
 				term.c.attr.fg = attr[i] - 30;
@@ -2113,29 +2214,30 @@ strhandle(void)
 	};
 
 	term.esc &= ~(ESC_STR_END|ESC_STR);
-	strparse();
+	strescseq.buf[strescseq.len] = '\0';
-	par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;
 
 	switch (strescseq.type) {
 	case ']': /* OSC -- Operating System Command */
+		strparse();
+		par = (narg = strescseq.narg) ? atoi(STRESCARGJUST(0)) : 0;
 		switch (par) {
 		case 0:
 			if (narg > 1) {
-				xsettitle(strescseq.args[1]);
+				xsettitle(STRESCARGREST(1));
-				xseticontitle(strescseq.args[1]);
+				xseticontitle(STRESCARGREST(1));
 			}
 			return;
 		case 1:
 			if (narg > 1)
-				xseticontitle(strescseq.args[1]);
+				xseticontitle(STRESCARGREST(1));
 			return;
 		case 2:
 			if (narg > 1)
-				xsettitle(strescseq.args[1]);
+				xsettitle(STRESCARGREST(1));
 			return;
 		case 52:
 			if (narg > 2 && allowwindowops) {
-				dec = base64dec(strescseq.args[2]);
+				dec = base64dec(STRESCARGJUST(2));
 				if (dec) {
 					xsetsel(dec);
 					xclipcopy();
@@ -2149,7 +2251,7 @@ strhandle(void)
 		case 12:
 			if (narg < 2)
 				break;
-			p = strescseq.args[1];
+			p = STRESCARGREST(1);
 			if ((j = par - 10) < 0 || j >= LEN(osc_table))
 				break; /* shouldn't be possible */
 
@@ -2165,10 +2267,10 @@ strhandle(void)
 		case 4: /* color set */
 			if (narg < 3)
 				break;
-			p = strescseq.args[2];
+			p = STRESCARGJUST(2);
 			/* FALLTHROUGH */
 		case 104: /* color reset */
-			j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
+			j = (narg > 1) ? atoi(STRESCARGJUST(1)) : -1;
 
 			if (p && !strcmp(p, "?")) {
 				osc_color_response(j, 0, 1);
@@ -2190,9 +2292,15 @@ strhandle(void)
 		}
 		break;
 	case 'k': /* old title set compatibility */
-		xsettitle(strescseq.args[0]);
+		xsettitle(strescseq.buf);
 		return;
 	case 'P': /* DCS -- Device Control String */
+		/* https://gitlab.com/gnachman/iterm2/-/wikis/synchronized-updates-spec */
+		if (strstr(strescseq.buf, "=1s") == strescseq.buf)
+			tsync_begin();  /* BSU */
+		else if (strstr(strescseq.buf, "=2s") == strescseq.buf)
+			tsync_end();  /* ESU */
+		return;
 	case '_': /* APC -- Application Program Command */
 	case '^': /* PM -- Privacy Message */
 		return;
@@ -2209,18 +2317,17 @@ strparse(void)
 	char *p = strescseq.buf;
 
 	strescseq.narg = 0;
-	strescseq.buf[strescseq.len] = '\0';
 
 	if (*p == '\0')
 		return;
 
 	while (strescseq.narg < STR_ARG_SIZ) {
-		strescseq.args[strescseq.narg++] = p;
 		while ((c = *p) != ';' && c != '\0')
-			++p;
+			p++;
+		strescseq.argp[strescseq.narg++] = p;
 		if (c == '\0')
 			return;
-		*p++ = '\0';
+		p++;
 	}
 }
 
@@ -2735,6 +2842,9 @@ twrite(const char *buf, int buflen, int show_ctrl)
 	Rune u;
 	int n;
 
+	int su0 = su;
+	twrite_aborted = 0;
+
 	for (n = 0; n < buflen; n += charsize) {
 		if (IS_SET(MODE_UTF8)) {
 			/* process a complete utf8 char */
@@ -2745,6 +2855,10 @@ twrite(const char *buf, int buflen, int show_ctrl)
 			u = buf[n] & 0xFF;
 			charsize = 1;
 		}
+		if (su0 && !su) {
+			twrite_aborted = 1;
+			break;  // ESU - allow rendering before a new BSU
+		}
 		if (show_ctrl && ISCONTROL(u)) {
 			if (u & 0x80) {
 				u &= 0x7f;
@@ -3072,7 +3186,6 @@ draw(void)
 	xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
 			term.ocx, term.ocy, term.line[term.ocy][term.ocx],
 			term.line[term.ocy], term.col);
-
 	term.ocx = cx;
 	term.ocy = term.c.y;
 	xfinishdraw();

st.h

@@ -35,8 +35,16 @@ enum glyph_attribute {
 	ATTR_WRAP       = 1 << 9,
 	ATTR_WIDE       = 1 << 10,
 	ATTR_WDUMMY     = 1 << 11,
+	ATTR_BOXDRAW    = 1 << 11,
 	ATTR_SELECTED   = 1 << 12,
 	ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
+	ATTR_DIRTYUNDERLINE = 1 << 15,
+};
+
+enum drawing_mode {
+    DRAW_NONE = 0,
+    DRAW_BG = 1 << 0,
+    DRAW_FG = 1 << 1,
 };
 
 enum selection_mode {
@@ -68,6 +76,8 @@ typedef struct {
 	ushort mode;      /* attribute flags */
 	uint32_t fg;      /* foreground  */
 	uint32_t bg;      /* background  */
+	int ustyle;	  /* underline style */
+	int ucolor[3];    /* underline color */
 } Glyph;
 
 typedef Glyph *Line;
@@ -117,6 +127,14 @@ void *xmalloc(size_t);
 void *xrealloc(void *, size_t);
 char *xstrdup(const 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 *scroll;
@@ -130,3 +148,5 @@ extern unsigned int tabspaces;
 extern unsigned int defaultfg;
 extern unsigned int defaultbg;
 extern unsigned int defaultcs;
+extern const int boxdraw, boxdraw_bold, boxdraw_braille;
+extern float alpha;

st.info

@@ -1,4 +1,5 @@
 st-mono| simpleterm monocolor,
+	Su,
 	acsc=+C\,D-A.B0E``aaffgghFiGjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~,
 	am,
 	bce,
@@ -191,6 +192,7 @@ st-mono| simpleterm monocolor,
 	Ms=\E]52;%p1%s;%p2%s\007,
 	Se=\E[2 q,
 	Ss=\E[%p1%d q,
+	Sync=\EP=%p1%ds\E\\,
 
 st| simpleterm,
 	use=st-mono,

x.c

@@ -14,6 +14,7 @@
 #include <X11/keysym.h>
 #include <X11/Xft/Xft.h>
 #include <X11/XKBlib.h>
+#include <X11/extensions/Xrandr.h>
 
 char *argv0;
 #include "arg.h"
@@ -46,6 +47,29 @@ typedef struct {
 	signed char appcursor; /* application cursor */
 } Key;
 
+<<<<<<< HEAD
+/* Undercurl slope types */
+enum undercurl_slope_type {
+	UNDERCURL_SLOPE_ASCENDING = 0,
+	UNDERCURL_SLOPE_TOP_CAP = 1,
+	UNDERCURL_SLOPE_DESCENDING = 2,
+	UNDERCURL_SLOPE_BOTTOM_CAP = 3
+};
+=======
+typedef struct {
+	const char *name;
+	float defaultfontsize;
+} MonitorConfig;
+
+typedef struct {
+	Atom name;
+	int x, y, w, h;
+	float defaultfontsize, usedfontsize;
+} MonitorInfo;
+
+static void refreshxrandr(const Arg *dummy);
+>>>>>>> feat/xrandrfontsize
+
 /* X modifiers */
 #define XK_ANY_MOD    UINT_MAX
 #define XK_NO_MOD     0
@@ -82,6 +106,7 @@ typedef XftGlyphFontSpec GlyphFontSpec;
 typedef struct {
 	int tw, th; /* tty width and height */
 	int w, h; /* window width and height */
+	int hborderpx, vborderpx;
 	int ch; /* char height */
 	int cw; /* char width  */
 	int mode; /* window state/mode flags */
@@ -106,6 +131,7 @@ typedef struct {
 	XSetWindowAttributes attrs;
 	int scr;
 	int isfixed; /* is fixed geometry? */
+	int depth; /* bit depth */
 	int l, t; /* left and top offset */
 	int gm; /* geometry mask */
 } XWindow;
@@ -217,6 +243,11 @@ static void (*handler[LASTEvent])(XEvent *) = {
 	[SelectionRequest] = selrequest,
 };
 
+static double defaultrelfontsize = 0;
+static MonitorInfo *monitors_info = NULL;
+static int monitors_num = 0;
+static int prev_mindex = -1;
+
 /* Globals */
 static DC dc;
 static XWindow xw;
@@ -245,6 +276,7 @@ static char *usedfont = NULL;
 static double usedfontsize = 0;
 static double defaultfontsize = 0;
 
+static char *opt_alpha = NULL;
 static char *opt_class = NULL;
 static char **opt_cmd  = NULL;
 static char *opt_embed = NULL;
@@ -333,7 +365,7 @@ ttysend(const Arg *arg)
 int
 evcol(XEvent *e)
 {
-	int x = e->xbutton.x - borderpx;
+	int x = e->xbutton.x - win.hborderpx;
 	LIMIT(x, 0, win.tw - 1);
 	return x / win.cw;
 }
@@ -341,7 +373,7 @@ evcol(XEvent *e)
 int
 evrow(XEvent *e)
 {
-	int y = e->xbutton.y - borderpx;
+	int y = e->xbutton.y - win.vborderpx;
 	LIMIT(y, 0, win.th - 1);
 	return y / win.ch;
 }
@@ -688,6 +720,8 @@ setsel(char *str, Time t)
 	XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
 	if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
 		selclear();
+
+	xclipcopy();
 }
 
 void
@@ -711,7 +745,9 @@ brelease(XEvent *e)
 
 	if (mouseaction(e, 1))
 		return;
-	if (btn == Button1)
+	if (btn == Button3)
+		selpaste(NULL);
+	else if (btn == Button1)
 		mousesel(e, 1);
 }
 
@@ -741,6 +777,9 @@ cresize(int width, int height)
 	col = MAX(1, col);
 	row = MAX(1, row);
 
+	win.hborderpx = (win.w - col * win.cw) / 2;
+	win.vborderpx = (win.h - row * win.ch) / 2;
+
 	tresize(col, row);
 	xresize(col, row);
 	ttyresize(win.tw, win.th);
@@ -754,7 +793,7 @@ xresize(int col, int row)
 
 	XFreePixmap(xw.dpy, xw.buf);
 	xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
-			DefaultDepth(xw.dpy, xw.scr));
+			xw.depth);
 	XftDrawChange(xw.draw, xw.buf);
 	xclear(0, 0, win.w, win.h);
 
@@ -814,6 +853,13 @@ xloadcols(void)
 			else
 				die("could not allocate color %d\n", i);
 		}
+
+	/* set alpha value of bg color */
+	if (opt_alpha)
+		alpha = strtof(opt_alpha, NULL);
+	dc.col[defaultbg].color.alpha = (unsigned short)(0xffff * alpha);
+	dc.col[defaultbg].pixel &= 0x00FFFFFF;
+	dc.col[defaultbg].pixel |= (unsigned char)(0xff * alpha) << 24;
 	loaded = 1;
 }
 
@@ -871,8 +917,8 @@ xhints(void)
 	sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize;
 	sizeh->height = win.h;
 	sizeh->width = win.w;
-	sizeh->height_inc = win.ch;
+	sizeh->height_inc = 1;
-	sizeh->width_inc = win.cw;
+	sizeh->width_inc = 1;
 	sizeh->base_height = 2 * borderpx;
 	sizeh->base_width = 2 * borderpx;
 	sizeh->min_height = win.ch + 2 * borderpx;
@@ -1139,11 +1185,23 @@ xinit(int cols, int rows)
 	Window parent;
 	pid_t thispid = getpid();
 	XColor xmousefg, xmousebg;
+	XWindowAttributes attr;
+	XVisualInfo vis;
 
 	if (!(xw.dpy = XOpenDisplay(NULL)))
 		die("can't open display\n");
 	xw.scr = XDefaultScreen(xw.dpy);
-	xw.vis = XDefaultVisual(xw.dpy, xw.scr);
+
+	if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0)))) {
+		parent = XRootWindow(xw.dpy, xw.scr);
+		xw.depth = 32;
+	} else {
+		XGetWindowAttributes(xw.dpy, parent, &attr);
+		xw.depth = attr.depth;
+	}
+
+	XMatchVisualInfo(xw.dpy, xw.scr, xw.depth, TrueColor, &vis);
+	xw.vis = vis.visual;
 
 	/* font */
 	if (!FcInit())
@@ -1153,12 +1211,12 @@ xinit(int cols, int rows)
 	xloadfonts(usedfont, 0);
 
 	/* colors */
-	xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
+	xw.cmap = XCreateColormap(xw.dpy, parent, xw.vis, None);
 	xloadcols();
 
 	/* adjust fixed window geometry */
-	win.w = 2 * borderpx + cols * win.cw;
+	win.w = 2 * win.hborderpx + 2 * borderpx + cols * win.cw;
-	win.h = 2 * borderpx + rows * win.ch;
+	win.h = 2 * win.vborderpx + 2 * borderpx + rows * win.ch;
 	if (xw.gm & XNegative)
 		xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
 	if (xw.gm & YNegative)
@@ -1173,19 +1231,15 @@ xinit(int cols, int rows)
 		| ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
 	xw.attrs.colormap = xw.cmap;
 
-	if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
-		parent = XRootWindow(xw.dpy, xw.scr);
 	xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
-			win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
+			win.w, win.h, 0, xw.depth, InputOutput,
 			xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
 			| CWEventMask | CWColormap, &xw.attrs);
 
 	memset(&gcvalues, 0, sizeof(gcvalues));
 	gcvalues.graphics_exposures = False;
-	dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
+	xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h, xw.depth);
-			&gcvalues);
+	dc.gc = XCreateGC(xw.dpy, xw.buf, GCGraphicsExposures, &gcvalues);
-	xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
-			DefaultDepth(xw.dpy, xw.scr));
 	XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
 	XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
 
@@ -1263,7 +1317,7 @@ xresetfontsettings(ushort mode, Font **font, int *frcflags)
 int
 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
 {
-	float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
+	float winx = win.hborderpx + x * win.cw, winy = win.vborderpx + y * win.ch, xp, yp;
 	ushort mode, prevmode = USHRT_MAX;
 	Font *font = &dc.font;
 	int frcflags = FRC_NORMAL;
@@ -1421,11 +1475,56 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
 	return numspecs;
 }
 
+static int isSlopeRising (int x, int iPoint, int waveWidth)
+{
+	//    .     .     .     .
+	//   / \   / \   / \   / \
+	//  /   \ /   \ /   \ /   \
+	// .     .     .     .     .
+
+	// Find absolute `x` of point
+	x += iPoint * (waveWidth/2);
+
+	// Find index of absolute wave
+	int absSlope = x / ((float)waveWidth/2);
+
+	return (absSlope % 2);
+}
+
+static int getSlope (int x, int iPoint, int waveWidth)
+{
+	// Sizes: Caps are half width of slopes
+	//    1_2       1_2       1_2      1_2
+	//   /   \     /   \     /   \    /   \
+	//  /     \   /     \   /     \  /     \
+	// 0       3_0       3_0      3_0       3_
+	// <2->    <1>         <---6---->
+
+	// Find type of first point
+	int firstType;
+	x -= (x / waveWidth) * waveWidth;
+	if (x < (waveWidth * (2.f/6.f)))
+		firstType = UNDERCURL_SLOPE_ASCENDING;
+	else if (x < (waveWidth * (3.f/6.f)))
+		firstType = UNDERCURL_SLOPE_TOP_CAP;
+	else if (x < (waveWidth * (5.f/6.f)))
+		firstType = UNDERCURL_SLOPE_DESCENDING;
+	else
+		firstType = UNDERCURL_SLOPE_BOTTOM_CAP;
+
+	// Find type of given point
+	int pointType = (iPoint % 4);
+	pointType += firstType;
+	pointType %= 4;
+
+	return pointType;
+}
+
 void
 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
 {
 	int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
-	int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
+	int winx = win.hborderpx + x * win.cw, winy = win.vborderpx + y * win.ch,
 	    width = charlen * win.cw;
 	Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
 	XRenderColor colfg, colbg;
@@ -1462,10 +1561,6 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i
 		bg = &dc.col[base.bg];
 	}
 
-	/* Change basic system colors [0-7] to bright system colors [8-15] */
-	if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
-		fg = &dc.col[base.fg + 8];
-
 	if (IS_SET(MODE_REVERSE)) {
 		if (fg == &dc.col[defaultfg]) {
 			fg = &dc.col[defaultbg];
@@ -1513,6 +1608,7 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i
 	if (base.mode & ATTR_INVISIBLE)
 		fg = bg;
 
+    if (dmode & DRAW_BG) {
         /* Intelligent cleaning up of the borders. */
         if (x == 0) {
             xclear(0, (y == 0)? 0 : winy, borderpx,
@@ -1527,9 +1623,9 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i
             xclear(winx, 0, winx + width, borderpx);
         if (winy + win.ch >= borderpx + win.th)
             xclear(winx, winy + win.ch, winx + width, win.h);
-
+        /* Fill the background */
-	/* Clean up the region we want to draw to. */
         XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
+    }
 
 	/* Set the clip region because Xft is sometimes dirty. */
 	r.x = 0;
@@ -1543,8 +1639,357 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i
 
 	/* Render underline and strikethrough. */
 	if (base.mode & ATTR_UNDERLINE) {
-		XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent * chscale + 1,
+		// Underline Color
-				width, 1);
+		const int widthThreshold  = 28; // +1 width every widthThreshold px of font
+		int wlw = (win.ch / widthThreshold) + 1; // Wave Line Width
+		int linecolor;
+		if ((base.ucolor[0] >= 0) &&
+			!(base.mode & ATTR_BLINK && win.mode & MODE_BLINK) &&
+			!(base.mode & ATTR_INVISIBLE)
+		) {
+			// Special color for underline
+			// Index
+			if (base.ucolor[1] < 0) {
+				linecolor = dc.col[base.ucolor[0]].pixel;
+			}
+			// RGB
+			else {
+				XColor lcolor;
+				lcolor.red = base.ucolor[0] * 257;
+				lcolor.green = base.ucolor[1] * 257;
+				lcolor.blue = base.ucolor[2] * 257;
+				lcolor.flags = DoRed | DoGreen | DoBlue;
+				XAllocColor(xw.dpy, xw.cmap, &lcolor);
+				linecolor = lcolor.pixel;
+			}
+		} else {
+			// Foreground color for underline
+			linecolor = fg->pixel;
+		}
+
+		XGCValues ugcv = {
+			.foreground = linecolor,
+			.line_width = wlw,
+			.line_style = LineSolid,
+			.cap_style = CapNotLast
+		};
+
+		GC ugc = XCreateGC(xw.dpy, XftDrawDrawable(xw.draw),
+			GCForeground | GCLineWidth | GCLineStyle | GCCapStyle,
+			&ugcv);
+
+		// Underline Style
+		if (base.ustyle != 3) {
+			//XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1, width, 1);
+			XFillRectangle(xw.dpy, XftDrawDrawable(xw.draw), ugc, winx,
+				winy + dc.font.ascent + 1, width, wlw);
+		} else if (base.ustyle == 3) {
+			int ww = win.cw;//width;
+			int wh = dc.font.descent - wlw/2 - 1;//r.height/7;
+			int wx = winx;
+			int wy = winy + win.ch - dc.font.descent;
+
+#if UNDERCURL_STYLE == UNDERCURL_CURLY
+			// Draw waves
+			int narcs = charlen * 2 + 1;
+			XArc *arcs = xmalloc(sizeof(XArc) * narcs);
+
+			int i = 0;
+			for (i = 0; i < charlen-1; i++) {
+				arcs[i*2] = (XArc) {
+					.x = wx + win.cw * i + ww / 4,
+					.y = wy,
+					.width = win.cw / 2,
+					.height = wh,
+					.angle1 = 0,
+					.angle2 = 180 * 64
+				};
+				arcs[i*2+1] = (XArc) {
+					.x = wx + win.cw * i + ww * 0.75,
+					.y = wy,
+					.width = win.cw/2,
+					.height = wh,
+					.angle1 = 180 * 64,
+					.angle2 = 180 * 64
+				};
+			}
+			// Last wave
+			arcs[i*2] = (XArc) {wx + ww * i + ww / 4, wy, ww / 2, wh,
+			0, 180 * 64 };
+			// Last wave tail
+			arcs[i*2+1] = (XArc) {wx + ww * i + ww * 0.75, wy, ceil(ww / 2.),
+			wh, 180 * 64, 90 * 64};
+			// First wave tail
+			i++;
+			arcs[i*2] = (XArc) {wx - ww/4 - 1, wy, ceil(ww / 2.), wh, 270 * 64,
+			90 * 64 };
+
+			XDrawArcs(xw.dpy, XftDrawDrawable(xw.draw), ugc, arcs, narcs);
+
+			free(arcs);
+#elif UNDERCURL_STYLE == UNDERCURL_SPIKY
+			// Make the underline corridor larger
+			/*
+			wy -= wh;
+			*/
+			wh *= 2;
+
+			// Set the angle of the slope to 45°
+			ww = wh;
+
+			// Position of wave is independent of word, it's absolute
+			wx = (wx / (ww/2)) * (ww/2);
+
+			int marginStart = winx - wx;
+
+			// Calculate number of points with floating precision
+			float n = width;					// Width of word in pixels
+			n = (n / ww) * 2;					// Number of slopes (/ or \)
+			n += 2;								// Add two last points
+			int npoints = n;					// Convert to int
+
+			// Total length of underline
+			float waveLength = 0;
+
+			if (npoints >= 3) {
+				// We add an aditional slot in case we use a bonus point
+				XPoint *points = xmalloc(sizeof(XPoint) * (npoints + 1));
+
+				// First point (Starts with the word bounds)
+				points[0] = (XPoint) {
+					.x = wx + marginStart,
+					.y = (isSlopeRising(wx, 0, ww))
+						? (wy - marginStart + ww/2.f)
+						: (wy + marginStart)
+				};
+
+				// Second point (Goes back to the absolute point coordinates)
+				points[1] = (XPoint) {
+					.x = (ww/2.f) - marginStart,
+					.y = (isSlopeRising(wx, 1, ww))
+						? (ww/2.f - marginStart)
+						: (-ww/2.f + marginStart)
+				};
+				waveLength += (ww/2.f) - marginStart;
+
+				// The rest of the points
+				for (int i = 2; i < npoints-1; i++) {
+					points[i] = (XPoint) {
+						.x = ww/2,
+						.y = (isSlopeRising(wx, i, ww))
+							? wh/2
+							: -wh/2
+					};
+					waveLength += ww/2;
+				}
+
+				// Last point
+				points[npoints-1] = (XPoint) {
+					.x = ww/2,
+					.y = (isSlopeRising(wx, npoints-1, ww))
+						? wh/2
+						: -wh/2
+				};
+				waveLength += ww/2;
+
+				// End
+				if (waveLength < width) { // Add a bonus point?
+					int marginEnd = width - waveLength;
+					points[npoints] = (XPoint) {
+						.x = marginEnd,
+						.y = (isSlopeRising(wx, npoints, ww))
+							? (marginEnd)
+							: (-marginEnd)
+					};
+
+					npoints++;
+				} else if (waveLength > width) { // Is last point too far?
+					int marginEnd = waveLength - width;
+					points[npoints-1].x -= marginEnd;
+					if (isSlopeRising(wx, npoints-1, ww))
+						points[npoints-1].y -= (marginEnd);
+					else
+						points[npoints-1].y += (marginEnd);
+				}
+
+				// Draw the lines
+				XDrawLines(xw.dpy, XftDrawDrawable(xw.draw), ugc, points, npoints,
+						CoordModePrevious);
+
+				// Draw a second underline with an offset of 1 pixel
+				if ( ((win.ch / (widthThreshold/2)) % 2)) {
+					points[0].x++;
+
+					XDrawLines(xw.dpy, XftDrawDrawable(xw.draw), ugc, points,
+							npoints, CoordModePrevious);
+				}
+
+				// Free resources
+				free(points);
+			}
+#else // UNDERCURL_CAPPED
+			// Cap is half of wave width
+			float capRatio = 0.5f;
+
+			// Make the underline corridor larger
+			wh *= 2;
+
+			// Set the angle of the slope to 45°
+			ww = wh;
+			ww *= 1 + capRatio; // Add a bit of width for the cap
+
+			// Position of wave is independent of word, it's absolute
+			wx = (wx / ww) * ww;
+
+			float marginStart;
+			switch(getSlope(winx, 0, ww)) {
+				case UNDERCURL_SLOPE_ASCENDING:
+					marginStart = winx - wx;
+					break;
+				case UNDERCURL_SLOPE_TOP_CAP:
+					marginStart = winx - (wx + (ww * (2.f/6.f)));
+					break;
+				case UNDERCURL_SLOPE_DESCENDING:
+					marginStart = winx - (wx + (ww * (3.f/6.f)));
+					break;
+				case UNDERCURL_SLOPE_BOTTOM_CAP:
+					marginStart = winx - (wx + (ww * (5.f/6.f)));
+					break;
+			}
+
+			// Calculate number of points with floating precision
+			float n = width;					// Width of word in pixels
+												//					   ._.
+			n = (n / ww) * 4;					// Number of points (./   \.)
+			n += 2;								// Add two last points
+			int npoints = n;					// Convert to int
+
+			// Position of the pen to draw the lines
+			float penX = 0;
+			float penY = 0;
+
+			if (npoints >= 3) {
+				XPoint *points = xmalloc(sizeof(XPoint) * (npoints + 1));
+
+				// First point (Starts with the word bounds)
+				penX = winx;
+				switch (getSlope(winx, 0, ww)) {
+					case UNDERCURL_SLOPE_ASCENDING:
+						penY = wy + wh/2.f - marginStart;
+						break;
+					case UNDERCURL_SLOPE_TOP_CAP:
+						penY = wy;
+						break;
+					case UNDERCURL_SLOPE_DESCENDING:
+						penY = wy + marginStart;
+						break;
+					case UNDERCURL_SLOPE_BOTTOM_CAP:
+						penY = wy + wh/2.f;
+						break;
+				}
+				points[0].x = penX;
+				points[0].y = penY;
+
+				// Second point (Goes back to the absolute point coordinates)
+				switch (getSlope(winx, 1, ww)) {
+					case UNDERCURL_SLOPE_ASCENDING:
+						penX += ww * (1.f/6.f) - marginStart;
+						penY += 0;
+						break;
+					case UNDERCURL_SLOPE_TOP_CAP:
+						penX += ww * (2.f/6.f) - marginStart;
+						penY += -wh/2.f + marginStart;
+						break;
+					case UNDERCURL_SLOPE_DESCENDING:
+						penX += ww * (1.f/6.f) - marginStart;
+						penY += 0;
+						break;
+					case UNDERCURL_SLOPE_BOTTOM_CAP:
+						penX += ww * (2.f/6.f) - marginStart;
+						penY += -marginStart + wh/2.f;
+						break;
+				}
+				points[1].x = penX;
+				points[1].y = penY;
+
+				// The rest of the points
+				for (int i = 2; i < npoints; i++) {
+					switch (getSlope(winx, i, ww)) {
+						case UNDERCURL_SLOPE_ASCENDING:
+						case UNDERCURL_SLOPE_DESCENDING:
+							penX += ww * (1.f/6.f);
+							penY += 0;
+							break;
+						case UNDERCURL_SLOPE_TOP_CAP:
+							penX += ww * (2.f/6.f);
+							penY += -wh / 2.f;
+							break;
+						case UNDERCURL_SLOPE_BOTTOM_CAP:
+							penX += ww * (2.f/6.f);
+							penY += wh / 2.f;
+							break;
+					}
+					points[i].x = penX;
+					points[i].y = penY;
+				}
+
+				// End
+				float waveLength = penX - winx;
+				if (waveLength < width) { // Add a bonus point?
+					int marginEnd = width - waveLength;
+					penX += marginEnd;
+					switch(getSlope(winx, npoints, ww)) {
+						case UNDERCURL_SLOPE_ASCENDING:
+						case UNDERCURL_SLOPE_DESCENDING:
+							//penY += 0;
+							break;
+						case UNDERCURL_SLOPE_TOP_CAP:
+							penY += -marginEnd;
+							break;
+						case UNDERCURL_SLOPE_BOTTOM_CAP:
+							penY += marginEnd;
+							break;
+					}
+
+					points[npoints].x = penX;
+					points[npoints].y = penY;
+
+					npoints++;
+				} else if (waveLength > width) { // Is last point too far?
+					int marginEnd = waveLength - width;
+					points[npoints-1].x -= marginEnd;
+					switch(getSlope(winx, npoints-1, ww)) {
+						case UNDERCURL_SLOPE_TOP_CAP:
+							points[npoints-1].y += marginEnd;
+							break;
+						case UNDERCURL_SLOPE_BOTTOM_CAP:
+							points[npoints-1].y -= marginEnd;
+							break;
+						default:
+							break;
+					}
+				}
+
+				// Draw the lines
+				XDrawLines(xw.dpy, XftDrawDrawable(xw.draw), ugc, points, npoints,
+						CoordModeOrigin);
+
+				// Draw a second underline with an offset of 1 pixel
+				if ( ((win.ch / (widthThreshold/2)) % 2)) {
+					for (int i = 0; i < npoints; i++)
+						points[i].x++;
+
+					XDrawLines(xw.dpy, XftDrawDrawable(xw.draw), ugc, points,
+							npoints, CoordModeOrigin);
+				}
+
+				// Free resources
+				free(points);
+			}
+#endif
+		}
+
+		XFreeGC(xw.dpy, ugc);
 	}
 
 	if (base.mode & ATTR_STRUCK) {
@@ -1570,6 +2015,7 @@ void
 xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og, Line line, int len)
 {
 	Color drawcol;
+	XRenderColor colbg;
 
 	/* remove the old cursor */
 	if (selected(ox, oy))
@@ -1601,12 +2047,22 @@ xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og, Line line, int le
 		if (selected(cx, cy)) {
 			g.fg = defaultfg;
 			g.bg = defaultrcs;
-		} else {
+		} else if (!(og.mode & ATTR_REVERSE)) {
-			g.fg = defaultbg;
+			unsigned long col = g.bg;
-			g.bg = defaultcs;
+			g.bg = g.fg;
+			g.fg = col;
 		}
+
+		if (IS_TRUECOL(g.bg)) {
+			colbg.alpha = 0xffff;
+			colbg.red = TRUERED(g.bg);
+			colbg.green = TRUEGREEN(g.bg);
+			colbg.blue = TRUEBLUE(g.bg);
+			XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &drawcol);
+		} else {
 			drawcol = dc.col[g.bg];
 		}
+	}
 
 	/* draw the new one */
 	if (IS_SET(MODE_FOCUSED)) {
@@ -1622,35 +2078,35 @@ xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og, Line line, int le
 		case 3: /* Blinking Underline */
 		case 4: /* Steady Underline */
 			XftDrawRect(xw.draw, &drawcol,
-					borderpx + cx * win.cw,
+					win.hborderpx + cx * win.cw,
-					borderpx + (cy + 1) * win.ch - \
+					win.vborderpx + (cy + 1) * win.ch - \
 						cursorthickness,
 					win.cw, cursorthickness);
 			break;
 		case 5: /* Blinking bar */
 		case 6: /* Steady bar */
 			XftDrawRect(xw.draw, &drawcol,
-					borderpx + cx * win.cw,
+					win.hborderpx + cx * win.cw,
-					borderpx + cy * win.ch,
+					win.vborderpx + cy * win.ch,
 					cursorthickness, win.ch);
 			break;
 		}
 	} else {
 		XftDrawRect(xw.draw, &drawcol,
-				borderpx + cx * win.cw,
+				win.hborderpx + cx * win.cw,
-				borderpx + cy * win.ch,
+				win.vborderpx + cy * win.ch,
 				win.cw - 1, 1);
 		XftDrawRect(xw.draw, &drawcol,
-				borderpx + cx * win.cw,
+				win.hborderpx + cx * win.cw,
-				borderpx + cy * win.ch,
+				win.vborderpx + cy * win.ch,
 				1, win.ch - 1);
 		XftDrawRect(xw.draw, &drawcol,
-				borderpx + (cx + 1) * win.cw - 1,
+				win.hborderpx + (cx + 1) * win.cw - 1,
-				borderpx + cy * win.ch,
+				win.vborderpx + cy * win.ch,
 				1, win.ch - 1);
 		XftDrawRect(xw.draw, &drawcol,
-				borderpx + cx * win.cw,
+				win.hborderpx + cx * win.cw,
-				borderpx + (cy + 1) * win.ch - 1,
+				win.vborderpx + (cy + 1) * win.ch - 1,
 				win.cw, 1);
 	}
 }
@@ -1695,6 +2151,8 @@ xsettitle(char *p)
 int
 xstartdraw(void)
 {
+	if (IS_SET(MODE_VISIBLE))
+		XCopyArea(xw.dpy, xw.win, xw.buf, dc.gc, 0, 0, win.w, win.h, 0, 0);
 	return IS_SET(MODE_VISIBLE);
 }
 
@@ -1806,6 +2264,144 @@ xseturgency(int add)
 	XFree(h);
 }
 
+static void
+cachemonitorinfo()
+{
+	int prev_num = monitors_num;
+	MonitorInfo *prev_info = monitors_info;
+	XRRMonitorInfo *xmonitors = XRRGetMonitors(xw.dpy, XRootWindow(xw.dpy, xw.scr), 1, &monitors_num);
+	if (!monitors_num)
+		die("xrandr found no monitors");
+
+	monitors_info = xmalloc(monitors_num * sizeof(MonitorInfo));
+
+	for (int i = 0; i < monitors_num; ++i) {
+		XRRMonitorInfo *xm = &xmonitors[i];
+		MonitorInfo *m = &monitors_info[i];
+
+		m->name = xm->name;
+		m->x = xm->x;
+		m->y = xm->y;
+		m->w = xm->width;
+		m->h = xm->height;
+
+		float px_mm = ((float)m->w / xm->mwidth + (float)m->h / xm->mheight) / 2;
+		float px_pt = 25.4 * px_mm / 72;
+		m->defaultfontsize = defaultrelfontsize * px_pt;
+
+		// Override defaultfontsize (dpi) by user config
+		char *name = XGetAtomName(xw.dpy, xm->name);
+		for (int j = 0; j < LEN(monitors_config); ++j)
+			if (!strcmp(name, monitors_config[j].name)) {
+				m->defaultfontsize = monitors_config[j].defaultfontsize;
+				if (m->defaultfontsize < 0)
+					m->defaultfontsize *= -px_pt;
+				break;
+			}
+		// fprintf(stderr, "%s: %fpx, %f\n", name, m->defaultfontsize, m->usedfontsize);
+		XFree(name);
+
+		// Restore usedfontsize (zoom) after re-cache for monitors with the same name
+		m->usedfontsize = m->defaultfontsize;
+		for (int j = 0; j < prev_num; ++j)
+			if (prev_info[j].name == m->name) {
+				m->usedfontsize = prev_info[j].usedfontsize;
+				break;
+			}
+	}
+
+	XRRFreeMonitors(xmonitors);
+	free(prev_info);
+}
+
+static int
+getmonitorindex_threshold(int w, int h, int x, int y)
+{
+	int mindex = -1;
+	float fontsize = 0;
+	int thresholdarea = winmovethreshold * w * h;
+
+	for (int i = 0; i < monitors_num; ++i) {
+		MonitorInfo *m = &monitors_info[i];
+		int overlap_w = MAX(0, MIN(x + w, m->x + m->w) - MAX(x, m->x));
+		int overlap_h = MAX(0, MIN(y + h, m->y + m->h) - MAX(y, m->y));
+		int area = overlap_w * overlap_h;
+		// Choose monitor with largest dpi (defaultfontsize)
+		//  from all "mirrored"/overlapped (e.g. projector)
+		if (area >= thresholdarea && fontsize < m->defaultfontsize) {
+			fontsize = m->defaultfontsize;
+			mindex = i;
+		}
+	}
+	return mindex;
+}
+
+static int
+getmonitorindex_nearest(int w, int h, int x, int y)
+{
+	int mindex = -1;
+	float fontsize = 0;
+	int overlaparea = 0;
+
+	for (int i = 0; i < monitors_num; ++i) {
+		MonitorInfo *m = &monitors_info[i];
+		int overlap_w = MAX(0, MIN(x + w, m->x + m->w) - MAX(x, m->x));
+		int overlap_h = MAX(0, MIN(y + h, m->y + m->h) - MAX(y, m->y));
+		int area = overlap_w * overlap_h;
+		// Choose monitor with largest overlapping area
+		//  e.g. when "st" is initially spawned in-between monitors
+		if (area > overlaparea) {
+			overlaparea = area;
+			mindex = i;
+		}
+	}
+	return mindex;
+}
+
+static void
+adjustmonitorfontsize(int mindex)
+{
+	if (mindex < 0 || prev_mindex == mindex)
+		return;
+	// Save zoom of current monitor before switching
+	if (prev_mindex >= 0)
+		monitors_info[prev_mindex].usedfontsize = usedfontsize;
+
+	defaultfontsize = monitors_info[mindex].defaultfontsize;
+	// fprintf(stderr, "Crossing: %fpx\n", defaultfontsize);
+
+	// NOTE: do nothing if font size differs by less than 1%
+	double fontsize = monitors_info[mindex].usedfontsize;
+	double delta = 0.01 * usedfontsize;
+	if (!BETWEEN(fontsize - usedfontsize, -delta, delta)) {
+		// fprintf(stderr, "Adjusted: %fpx\n", fontsize);
+		xunloadfonts();
+		xloadfonts(usedfont, fontsize);
+	}
+	prev_mindex = mindex;
+}
+
+void
+refreshxrandr(const Arg *dummy)
+{
+	// Reset index to detect change of window association on "xrandr ... --primary"
+	//  otherwise: zoom won't be saved on switching and new font size won't be loaded
+	// CRIT!!! event from xrandr may place another monitor into same index
+	if (prev_mindex >= 0)
+		monitors_info[prev_mindex].usedfontsize = usedfontsize;
+	prev_mindex = -1;
+
+	XWindowAttributes xattr = {0};
+	cachemonitorinfo();
+	XGetWindowAttributes(xw.dpy, xw.win, &xattr);
+
+	int mindex = getmonitorindex_threshold(xattr.width, xattr.height, xattr.x, xattr.y);
+	if (mindex < 0)
+		mindex = getmonitorindex_nearest(xattr.width, xattr.height, xattr.x, xattr.y);
+	adjustmonitorfontsize(mindex);
+}
+
+
 void
 xbell(void)
 {
@@ -1958,12 +2554,23 @@ cmessage(XEvent *e)
 void
 resize(XEvent *e)
 {
+	// BAD: no resize on monitor plug/unplug/reconfigure -- until window itself is kept in the same place
+	// NOTE: no resize event on zoomabs()
+	// fprintf(stderr, "Resize: %dx%d+%d+%d\n",
+	//     e->xconfigure.width, e->xconfigure.height, e->xconfigure.x, e->xconfigure.y);
+
+	adjustmonitorfontsize(getmonitorindex_threshold(
+	    e->xconfigure.width, e->xconfigure.height, e->xconfigure.x, e->xconfigure.y));
+
 	if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
 		return;
 
 	cresize(e->xconfigure.width, e->xconfigure.height);
 }
 
+int tinsync(uint);
+int ttyread_pending();
+
 void
 run(void)
 {
@@ -1990,6 +2597,22 @@ run(void)
 		}
 	} while (ev.type != MapNotify);
 
+	int rr_event_base, rr_error_base, rr_major, rr_minor;
+	if (!XRRQueryExtension (xw.dpy, &rr_event_base, &rr_error_base) ||
+	    !XRRQueryVersion (xw.dpy, &rr_major, &rr_minor) ||
+	    rr_major < 1 || (rr_major == 1 && rr_minor < 5))
+	{
+		die("RandR 1.5 extension isn't available\n");
+	}
+	XRRSelectInput(xw.dpy, xw.win, RRCrtcChangeNotifyMask);
+
+	// WARN: can query actual window size/pos only after window is mapped and its width/height are adjusted by WM
+	//  * x/y are WM-dependent and can't be determined beforehand anyway
+	//  * defaultfontsize isn't available until font is loaded and actual Fc*() size queried
+	// BAD: fonts on startup are always reloaded -- how to specify their size beforehand ?
+	FcPatternGetDouble(dc.font.match->pattern, FC_SIZE, 0, &defaultrelfontsize);
+	refreshxrandr(0);
+
 	ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd);
 	cresize(w, h);
 
@@ -1998,7 +2621,7 @@ run(void)
 		FD_SET(ttyfd, &rfd);
 		FD_SET(xfd, &rfd);
 
-		if (XPending(xw.dpy))
+		if (XPending(xw.dpy) || ttyread_pending())
 			timeout = 0;  /* existing events might not set xfd */
 
 		seltv.tv_sec = timeout / 1E3;
@@ -2012,7 +2635,8 @@ run(void)
 		}
 		clock_gettime(CLOCK_MONOTONIC, &now);
 
-		if (FD_ISSET(ttyfd, &rfd))
+		int ttyin = FD_ISSET(ttyfd, &rfd) || ttyread_pending();
+		if (ttyin)
 			ttyread();
 
 		xev = 0;
@@ -2021,6 +2645,16 @@ run(void)
 			XNextEvent(xw.dpy, &ev);
 			if (XFilterEvent(&ev, None))
 				continue;
+			if (LASTEvent <= ev.type) {
+				if (rr_event_base + RRNotify == ev.type &&
+					RRNotify_CrtcChange == ((XRRNotifyEvent *)&ev)->subtype)
+				{
+					XRRUpdateConfiguration(&ev);
+					// fprintf(stderr, "Monitor change: %d > %d\n", rr_event_base, LASTEvent);
+					refreshxrandr(0);
+				}
+				continue;
+			}
 			if (handler[ev.type])
 				(handler[ev.type])(&ev);
 		}
@@ -2036,7 +2670,7 @@ run(void)
 		 * maximum latency intervals during `cat huge.txt`, and perfect
 		 * sync with periodic updates from animations/key-repeats/etc.
 		 */
-		if (FD_ISSET(ttyfd, &rfd) || xev) {
+		if (ttyin || xev) {
 			if (!drawing) {
 				trigger = now;
 				drawing = 1;
@@ -2047,6 +2681,18 @@ run(void)
 				continue;  /* we have time, try to find idle */
 		}
 
+		if (tinsync(su_timeout)) {
+			/*
+			 * on synchronized-update draw-suspension: don't reset
+			 * drawing so that we draw ASAP once we can (just after
+			 * ESU). it won't be too soon because we already can
+			 * draw now but we skip. we set timeout > 0 to draw on
+			 * SU-timeout even without new content.
+			 */
+			timeout = minlatency;
+			continue;
+		}
+
 		/* idle detected or maxlatency exhausted -> draw */
 		timeout = -1;
 		if (blinktimeout && tattrset(ATTR_BLINK)) {
@@ -2091,6 +2737,9 @@ main(int argc, char *argv[])
 	case 'a':
 		allowaltscreen = 0;
 		break;
+	case 'A':
+		opt_alpha = EARGF(usage());
+		break;
 	case 'c':
 		opt_class = EARGF(usage());
 		break;