From 0450c1008cc7365e5d1a2b0fbdeff32586f3a22f Mon Sep 17 00:00:00 2001
From: edluffy <edward@ncade.com>
Date: Sun, 14 Mar 2021 02:13:40 +0000
Subject: [PATCH] Add first faders/resizers

---
 lua/specs/init.lua | 66 ++++++++++++++++++++++++++++++++++++++++++++++
 plugin/specs.vim   | 26 ++++++++++++++++++
 2 files changed, 92 insertions(+)
 create mode 100644 lua/specs/init.lua
 create mode 100644 plugin/specs.vim

diff --git a/lua/specs/init.lua b/lua/specs/init.lua
new file mode 100644
index 0000000..62bd4c0
--- /dev/null
+++ b/lua/specs/init.lua
@@ -0,0 +1,66 @@
+local specs = {}
+
+function specs.show_specs(user_opts)
+    local opts = user_opts or {}
+
+    local row = vim.fn.winline()-1
+    local col = vim.fn.wincol()
+    local bufh = vim.api.nvim_create_buf(false, true)
+    win_id = vim.api.nvim_open_win(bufh, false, {
+        relative='win',
+        width = opts.width*2 + 1,
+        height = 1, 
+        col = col,
+        row = row,
+        style = 'minimal'
+    })
+    vim.api.nvim_win_set_option(win_id, "winblend", opts.blend)
+
+    local can_fade = true
+    local can_resize = true
+    local timer = vim.loop.new_timer()
+    vim.loop.timer_start(timer, opts.delay_ms, opts.inc_ms, vim.schedule_wrap(function()
+        if vim.api.nvim_win_is_valid(win_id) then
+            if can_fade then can_fade = opts.fader(win_id) end
+            if can_resize then can_resize = opts.resizer(win_id) end
+            if not (can_blend or can_resize) then
+                vim.loop.close(timer)
+                vim.api.nvim_win_close(win_id, true)
+                print("Timer done")
+            end
+        end
+    end))
+end
+
+-- Used as the default fader
+function specs.linear_fader(win_id)
+    local blend = vim.api.nvim_win_get_option(win_id, "winblend")
+    vim.api.nvim_win_set_option(win_id, "winblend", blend+1)
+    return (blend+1 < 100)
+end
+
+local function pulse_fader(win_id)
+end
+
+-- local function exp_fader()
+-- end
+
+function specs.shrink_resizer(win_id)
+    local config = vim.api.nvim_win_get_config(win_id)
+    config['width'] = config['width']-1
+    config['col'][false] = vim.fn.wincol()-config['width']/2
+    vim.api.nvim_win_set_config(win_id, config)
+    return (config['width']-1 > 0)
+end
+
+function specs.slide_resizer(win_id)
+    local config = vim.api.nvim_win_get_config(win_id)
+    config['width'] = config['width']-1
+    vim.api.nvim_win_set_config(win_id, config)
+    return (config['width']-1 > 0)
+end
+
+-- local function exp_resizer()
+-- end
+
+return specs
diff --git a/plugin/specs.vim b/plugin/specs.vim
new file mode 100644
index 0000000..a33b916
--- /dev/null
+++ b/plugin/specs.vim
@@ -0,0 +1,26 @@
+fun! Specs()
+    " remember to remove this line later ;)
+	lua for k in pairs(package.loaded) do if k:match("^specs") then package.loaded[k] = nil end end
+	lua require('specs').show_specs({ delay_ms = 1, inc_ms = 10, blend = 10, width = 20, fader=require('specs').linear_fader, resizer=require('specs').shrink_resizer })
+endfun
+
+    " e.g:
+    " require('specs').specs_popup({
+    "   delay = ...,
+    "   reps = ...,
+    "   blend = ...,
+    "   width = ...,
+    "   fader    = require('specs').linear_fader(),
+    "   resizer  = require('specs').shrink_resizer()
+    "   colorizer = ...,
+    " })
+
+
+    " pre-packaged opts could come as 'styles', which also have opts
+    " themselves:
+    " require('specs').specs_popup(require('specs').blink_style({ }))
+
+augroup Specs
+	autocmd!
+augroup END
+