alpha/transparency read from xresources

README.md

@@ -2,17 +2,19 @@
 
 The [suckless terminal (st)](https://st.suckless.org/) with some additional features:
 
-+ Adjustable transparency/alpha
-+ Compatibility with `Xresources` and `pywal` for dynamic colors
-+ Copy is alt-c, paste is alt-v or alt-p pastes from primary selection
++ Compatibility with `Xresources` and `pywal` for dynamic colors.
++ Default solarized colors otherwize.
++ Transparency/alpha, which is also adjustable from `~/.Xresources`.
 + Default font is system "mono" at 14pt, meaning the font will match your system font.
++ Very useful keybinds including:
+	+ Copy is alt-c, paste is alt-v or alt-p pastes from primary selection
+	+ Zoom in/out or increase font size with Alt+Shift+k/j or u/d for larger intervals.
 	+ Hold alt and press either ↑/↓ or the vim keys k/j to move up/down in the terminal.
-+ Shift+Mouse wheel will as well.
+	+ Shift+Mouse wheel do the same.
 	+ Alt-u and Alt-d scroll back/forward in history a page at a time.
 	+ Alt-PageUp and Alt-PageDown will do the same.
-+ Zoom in/out with Alt+Shift+k/j or u/d for larger intervals.
 + Vertcenter
-+ Default solarized colors without `pywal`
++ Scrollback
 + updated to latest version 0.8.1
 
 The following additional bindings were added before I forked this:
@@ -29,4 +31,42 @@ make
 sudo make install
 ```
 
-Obviously, `make` is required to build. `fontconfig` is required for the default build, since it asks `fontconfig` for your system monospace font.  It might be obvious, but `libX11` and `libXft` are required as well. Chances are, you have all of this installed already.
+Obviously, `make` is required to build. `fontconfig` is required for the
+default build, since it asks `fontconfig` for your system monospace font.  It
+might be obvious, but `libX11` and `libXft` are required as well. Chances are,
+you have all of this installed already.
+
+## How to configure dynamically with Xresrouces
+
+For many key variables, this build of `st` will look for X settings set in
+either `~/.Xdefaults` or `~/.Xresources`. You must run `xrdb` on one of these
+files to load the settings.
+
+For example, you can define your desired fonts, transparency or colors:
+
+```
+*.font:	Liberation Mono:pixelsize=12:antialias=true:autohint=true;
+*.alpha: 150
+*.color0: #111
+...
+```
+
+The `alpha` value (for transparency) goes from `0` (transparent) to `255`
+(opaque).
+
+### Colors
+
+To be clear about the color settings:
+
+- This build will use colorized colors by default and as a fallback.
+- If there are Xresources colors defined, those will take priority.
+- But if `wal` has run in your session, its colors will take priority.
+
+Note that when you run `wal`, it will negate the transparency of existing
+windows, but new windows will continue with the previously defined
+transparency.
+
+## Contact
+
+- Luke Smith <luke@lukesmith.xyz>
+- [https://lukesmith.xyz](https://lukesmith.xyz)

config.h

@@ -180,6 +180,7 @@ ResourcePref resources[] = {
 		{ "tabspaces",    INTEGER, &tabspaces },
 		{ "cwscale",      FLOAT,   &cwscale },
 		{ "chscale",      FLOAT,   &chscale },
+		{ "alpha",      INTEGER,   &alpha },
 };
 
 /*