From b97fc0b1cc93fe0d7d464b978e62f250a9738a5f Mon Sep 17 00:00:00 2001
From: B14CK313 <jajoblack@gmx.de>
Date: Fri, 1 Apr 2022 23:02:25 +0200
Subject: typingspeed: added typingspeed plugin (#47)

This plugin displays your current typing speed in characters per minute
and words per minute in the status bar.
I tried to keep the logic very simple, so instead of using real accurate
values, it counts characters/words in the current minute and adds
the value of the previous minute multiplied by the percentage needed to
'complete' the current minute (so it basically always displays the value
for one minute, but the part of it that falls into the last minute uses
the average):
```
words_last * (1 - (t.sec) / 60) + words
```
This should give fairly good results without the need for complicated code
or falling back to 0 after every minute.
---
 plugins/typingspeed.lua | 93 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 93 insertions(+)
 create mode 100644 plugins/typingspeed.lua

(limited to 'plugins/typingspeed.lua')

diff --git a/plugins/typingspeed.lua b/plugins/typingspeed.lua
new file mode 100644
index 0000000..62e44ef
--- /dev/null
+++ b/plugins/typingspeed.lua
@@ -0,0 +1,93 @@
+-- mod-version:2
+
+local core = require "core"
+local style = require "core.style"
+local common = require "core.common"
+local config = require "core.config"
+local DocView = require "core.docview"
+
+if common["merge"] then
+	config.plugins.typingspeed = common.merge({
+		-- characters that should be counted as word boundary
+		word_boundaries = "[%p%s]",
+	}, config.plugins.keystats)
+else
+	config.plugins.typingspeed = {
+		-- characters that should be counted as word boundary
+		word_boundaries = "[%p%s]",
+	}
+end
+
+local chars = 0
+local chars_last = 0
+local words = 0
+local words_last = 0
+local time_last = 0
+local started_word = false
+local cpm = 0
+local wpm = 0
+
+core.add_thread(function()
+	while true do
+		local t = os.date("*t")
+		if t.sec <= time_last then
+			words_last = words
+			words = 0
+			chars_last = chars
+			chars = 0
+			time_last = t.sec
+		end
+		wpm = words_last * (1-(t.sec)/60) + words
+		cpm = chars_last * (1-(t.sec)/60) + chars
+		coroutine.yield(1)
+	end
+end)
+
+local on_text_input = DocView.on_text_input
+function DocView:on_text_input(text, idx)
+	chars = chars + 1
+	if string.find(text, config.plugins.typingspeed.word_boundaries) then
+		if started_word then
+			words = words + 1
+			started_word = false
+		end
+	else
+		started_word = true
+	end
+	on_text_input(self, text, idx)
+end
+
+if core.status_view["add_item"] then
+	core.status_view:add_item(
+		function()
+			return core.active_view and getmetatable(core.active_view) == DocView
+		end,
+		"keystats:stats",
+		core.status_view.Item.RIGHT,
+		function()
+			return {
+				style.text,
+				string.format("%.0f CPM / %.0f WPM", cpm, wpm)
+			}
+		end,
+		nil,
+		1,
+		"characters / words per minute"
+	).separator = core.status_view.separator2
+else
+	local get_items = core.status_view.get_items
+	function core.status_view:get_items()
+		local left, right = get_items(self)
+
+		local t = {
+			style.text, string.format("%.0f CPM / %.0f WPM", cpm, wpm),
+			style.dim, self.separator2
+		}
+
+		for i, item in ipairs(t) do
+			table.insert(right, i, item)
+		end
+
+		return left, right
+	end
+end
-- 
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