applied font2 patch

4 files changed, 283 insertions, 3 deletions

diff --git a/config.def.h b/config.def.h
index eb24bcc..63d256c 100644
--- a/config.def.h
+++ b/config.def.h
@@ -6,6 +6,12 @@
  * font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html
  */
 static char *font = "Liberation Mono:pixelsize=12:antialias=true:autohint=true";
+/* Spare fonts */
+static char *font2[] = {
+/*	"Inconsolata for Powerline:pixelsize=12:antialias=true:autohint=true", */
+/*	"Hack Nerd Font Mono:pixelsize=11:antialias=true:autohint=true", */
+};
+
 static int borderpx = 2;
 
 /*
diff --git a/patches_applied/st-font2-0.8.5.diff b/patches_applied/st-font2-0.8.5.diff
new file mode 100644
index 0000000..9b22b8a
--- /dev/null
+++ b/patches_applied/st-font2-0.8.5.diff
@@ -0,0 +1,163 @@
+From 1635e04d3643dd4caa0c7c2043b585c6d7e4705f Mon Sep 17 00:00:00 2001
+From: Rizqi Nur Assyaufi <bandithijo@gmail.com>
+Date: Mon, 18 Jul 2022 01:15:45 +0800
+Subject: [PATCH] [st][patch][font2] Add patch for st-0.8.5
+
+---
+ config.def.h |   6 +++
+ x.c          | 101 +++++++++++++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 107 insertions(+)
+
+diff --git a/config.def.h b/config.def.h
+index 91ab8ca..717b2f0 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -6,6 +6,12 @@
+  * font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html
+  */
+ static char *font = "Liberation Mono:pixelsize=12:antialias=true:autohint=true";
++/* Spare fonts */
++static char *font2[] = {
++/*	"Inconsolata for Powerline:pixelsize=12:antialias=true:autohint=true", */
++/*	"Hack Nerd Font Mono:pixelsize=11:antialias=true:autohint=true", */
++};
++
+ static int borderpx = 2;
+
+ /*
+diff --git a/x.c b/x.c
+index 8a16faa..220fc4f 100644
+--- a/x.c
++++ b/x.c
+@@ -157,6 +157,8 @@ static void xhints(void);
+ static int xloadcolor(int, const char *, Color *);
+ static int xloadfont(Font *, FcPattern *);
+ static void xloadfonts(const char *, double);
++static int xloadsparefont(FcPattern *, int);
++static void xloadsparefonts(void);
+ static void xunloadfont(Font *);
+ static void xunloadfonts(void);
+ static void xsetenv(void);
+@@ -306,6 +308,7 @@ zoomabs(const Arg *arg)
+ {
+ 	xunloadfonts();
+ 	xloadfonts(usedfont, arg->f);
++	xloadsparefonts();
+ 	cresize(0, 0);
+ 	redraw();
+ 	xhints();
+@@ -1034,6 +1037,101 @@ xloadfonts(const char *fontstr, double fontsize)
+ 	FcPatternDestroy(pattern);
+ }
+
++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 sizeshift, 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) {
++			sizeshift = usedfontsize - defaultfontsize;
++			if (sizeshift != 0 &&
++					FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
++					FcResultMatch) {
++				fontval += sizeshift;
++				FcPatternDel(pattern, FC_PIXEL_SIZE);
++				FcPatternDel(pattern, FC_SIZE);
++				FcPatternAddDouble(pattern, FC_PIXEL_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);
++	}
++}
++
+ void
+ xunloadfont(Font *f)
+ {
+@@ -1131,6 +1229,9 @@ xinit(int cols, int rows)
+ 	usedfont = (opt_font == NULL)? font : opt_font;
+ 	xloadfonts(usedfont, 0);
+
++	/* spare fonts */
++	xloadsparefonts();
++
+ 	/* colors */
+ 	xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
+ 	xloadcols();
+--
+2.37.1
+
diff --git a/todo.org b/todo.org
index 9827d3b..6b6a746 100644
--- a/todo.org
+++ b/todo.org
@@ -1,7 +1,17 @@
 ST Patches
 * ST Patches Open Work
-** TODO [#A] font2 (fallback font for glyphs + emojis)
-st-font2-0.8.5.diff
+** DOING [#A] font2 (fallback font for glyphs + emojis)
+*** 2023-07-23 @ 17:08:03 -0500 Patch applied successfully w/o issues
+*** Description and URLs
+This patch allows to add spare font besides default. Some glyphs can be not present in default font. For this glyphs st uses font-config and try to find them in font cache first. This patch append fonts defined in font2 variable to the beginning of font cache. So they will be used first for glyphs that absent in default font.
+Example
+
+static char *font = "Bitstream Vera Sans Mono:pixelsize=11:antialias=true:autohint=true"; without patch.
+static char *font2[] = { "Inconsolata for Powerline:pixelsize=12:antialias=true:autohint=true" };
+
+https://st.suckless.org/patches/font2/
+https://st.suckless.org/patches/font2/st-font2-0.8.5.diff
+
 ** TODO [#A] right-click sends paste
 st-rightclickpaste-0.8.2.diff
 ** TODO [#B] xresources with signal reloading
@@ -42,7 +52,7 @@ Key bindings
 
 https://st.suckless.org/patches/colorschemes/
 https://st.suckless.org/patches/colorschemes/st-colorschemes-0.8.5.diff
-* ST Patches Cancelled
+* ST Patches Aborted
 ** CANCELLED [#B] externalpipe
 *** 2023-07-23 @ 16:32:10 -0500 skipping this patch.
 *** 2023-07-23 @ 16:32:06 -0500 failed verification using the example in description
diff --git a/x.c b/x.c
index 62bb683..5e8ba3e 100644
--- a/x.c
+++ b/x.c
@@ -161,6 +161,8 @@ static void xhints(void);
 static int xloadcolor(int, const char *, Color *);
 static int xloadfont(Font *, FcPattern *);
 static void xloadfonts(const char *, double);
+static int xloadsparefont(FcPattern *, int);
+static void xloadsparefonts(void);
 static void xunloadfont(Font *);
 static void xunloadfonts(void);
 static void xsetenv(void);
@@ -310,6 +312,7 @@ zoomabs(const Arg *arg)
 {
 	xunloadfonts();
 	xloadfonts(usedfont, arg->f);
+	xloadsparefonts();
 	cresize(0, 0);
 	redraw();
 	xhints();
@@ -1066,6 +1069,101 @@ xloadfonts(const char *fontstr, double fontsize)
 	FcPatternDestroy(pattern);
 }
 
+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 sizeshift, 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) {
+			sizeshift = usedfontsize - defaultfontsize;
+			if (sizeshift != 0 &&
+					FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
+					FcResultMatch) {
+				fontval += sizeshift;
+				FcPatternDel(pattern, FC_PIXEL_SIZE);
+				FcPatternDel(pattern, FC_SIZE);
+				FcPatternAddDouble(pattern, FC_PIXEL_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);
+	}
+}
+
 void
 xunloadfont(Font *f)
 {
@@ -1178,6 +1276,9 @@ xinit(int cols, int rows)
 	usedfont = (opt_font == NULL)? font : opt_font;
 	xloadfonts(usedfont, 0);
 
+	/* spare fonts */
+	xloadsparefonts();
+
 	/* colors */
 	xw.cmap = XCreateColormap(xw.dpy, parent, xw.vis, None);
 	xloadcols();