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-- mod-version:4
local common = require "core.common"
local command = require "core.command"
local config = require "core.config"
local style = require "core.style"
local DocView = require "core.docview"
local CommandView = require "core.commandview"
config.plugins.lineguide = common.merge({
enabled = false,
width = 2,
rulers = {
-- 80,
-- 100,
-- 120,
config.line_limit
},
use_custom_color = false,
custom_color = style.selection,
-- The config specification used by gui generators
config_spec = {
name = "Line Guide",
{
label = "Enabled",
description = "Disable or enable drawing of the line guide.",
path = "enabled",
type = "toggle",
default = true
},
{
label = "Width",
description = "Width in pixels of the line guide.",
path = "width",
type = "number",
default = 2,
min = 1
},
{
label = "Ruler Positions",
description = "The different column numbers for the line guides to draw.",
path = "rulers",
type = "list_strings",
default = { tostring(config.line_limit) or "80" },
get_value = function(rulers)
if type(rulers) == "table" then
local new_rulers = {}
for _, ruler in ipairs(rulers) do
table.insert(new_rulers, tostring(ruler))
end
return new_rulers
else
return { tostring(config.line_limit) }
end
end,
set_value = function(rulers)
local new_rulers = {}
for _, ruler in ipairs(rulers) do
local number = tonumber(ruler)
if number then
table.insert(new_rulers, number)
end
end
if #new_rulers == 0 then
table.insert(new_rulers, config.line_limit)
end
return new_rulers
end
},
{
label = "Use Custom Color",
description = "Enable the utilization of a custom line color.",
path = "use_custom_color",
type = "toggle",
default = false
},
{
label = "Custom Color",
description = "Applied when the above toggle is enabled.",
path = "custom_color",
type = "color",
default = style.selection
},
}
}, config.plugins.lineguide)
local function get_ruler(v)
local result = nil
if type(v) == 'number' then
result = { columns = v }
elseif type(v) == 'table' then
result = v
end
return result
end
local draw_overlay = DocView.draw_overlay
function DocView:draw_overlay(...)
if
type(config.plugins.lineguide) == "table"
and
config.plugins.lineguide.enabled
and
self:is(DocView)
then
local conf = config.plugins.lineguide
local line_x = self:get_line_screen_position(1)
local character_width = self:get_font():get_width("n")
local ruler_width = config.plugins.lineguide.width
local ruler_color = conf.use_custom_color and conf.custom_color
or (style.guide or style.selection)
for k,v in ipairs(config.plugins.lineguide.rulers) do
local ruler = get_ruler(v)
if ruler then
local x = line_x + (character_width * ruler.columns)
local y = self.position.y
local w = ruler_width
local h = self.size.y
renderer.draw_rect(x, y, w, h, ruler.color or ruler_color)
end
end
end
-- everything else like the cursor above the line guides
draw_overlay(self, ...)
end
command.add(nil, {
["lineguide:toggle"] = function()
config.plugins.lineguide.enabled = not config.plugins.lineguide.enabled
end
})
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