Update screenshot

Use a bunch of scripts and a small custom wezterm config to automate the
screenshot as much as possible.  If only Gnome would let me take a
screenshot of a window from command line.

Author: swsnr

README.md

@@ -8,14 +8,14 @@ $ mdcat sample.md
 
 ![mdcat showcase with different colour themes][sxs]
 
-mdcat in [kitty], with Tango Light, [Solarized] Light, and [Dracula] (from left to
-right), and [PragmataPro] as font.
+mdcat in [WezTerm], with "One Light (base16)", "Gruvbox Light", and "Darcula
+(base16)" (from left to right), and [JetBrains Mono] as font.
 
 [CommonMark]: http://commonmark.org
 [Solarized]: http://ethanschoonover.com/solarized
 [dracula]: https://draculatheme.com/iterm/
-[kitty]: https://sw.kovidgoyal.net/kitty/index.html
-[PragmataPro]: https://www.fsd.it/shop/fonts/pragmatapro/
+[wezterm]: https://wezfurlong.org/wezterm/
+[JetBrains Mono]: https://www.jetbrains.com/lp/mono/
 [sxs]: ./screenshots/side-by-side.png
 
 ## Features

screenshots/dracula.png

@@ -0,0 +1,17 @@
+-- Minimal wezterm configuration for our screenshots
+local wezterm = require("wezterm")
+
+return {
+	default_prog = {
+		"bash",
+		"--norc",
+		"-c",
+		"mdcat --columns 50 ./sample/showcase.md",
+	},
+	term = "wezterm",
+	font = wezterm.font("JetBrains Mono"),
+	initial_cols = 60,
+	-- We need 40 rows for the wrapped showcase document
+	initial_rows = 40,
+	exit_behavior = "Hold",
+}

screenshots/side-by-side.png

@@ -0,0 +1,13 @@
+#!/bin/bash
+# Copyright 2020 Sebastian Wiesnser <[email protected]>
+
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+set -euo pipefail
+
+DEST="$(git rev-parse --show-toplevel)/screenshots/side-by-side.png"
+
+montage "$@" -tile "$#x1" -geometry +0+0 "$DEST"
+oxipng "$DEST"

screenshots/solarized-light.png

@@ -0,0 +1,24 @@
+#!/bin/bash
+# Copyright 2020 Sebastian Wiesnser <[email protected]>
+
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+set -euo pipefail
+
+cd "$(git rev-parse --show-toplevel)"
+
+COLOR_THEMES=(
+    'One Light (base16)'
+    'Gruvbox Light'
+    'Darcula (base16)'
+)
+SAMPLE="./sample/showcase.md"
+LINES="$(wc -l "${SAMPLE}" | cut -d' ' -f1)"
+
+for theme in "${COLOR_THEMES[@]}"; do
+    wezterm --config-file ./screenshots/wezterm.lua \
+        --config "color_scheme='$theme'" \
+        start --cwd .
+done