116 lines
2.9 KiB
Lua
116 lines
2.9 KiB
Lua
-- mod-version:3
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local common = require "core.common"
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local command = require "core.command"
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local config = require "core.config"
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local style = require "core.style"
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local DocView = require "core.docview"
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local CommandView = require "core.commandview"
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config.plugins.lineguide = common.merge({
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enabled = false,
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width = 2,
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rulers = {
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-- 80,
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-- 100,
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-- 120,
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config.line_limit
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},
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-- The config specification used by gui generators
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config_spec = {
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name = "Line Guide",
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{
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label = "Enabled",
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description = "Disable or enable drawing of the line guide.",
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path = "enabled",
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type = "toggle",
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default = true
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},
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{
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label = "Width",
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description = "Width in pixels of the line guide.",
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path = "width",
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type = "number",
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default = 2,
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min = 1
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},
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{
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label = "Ruler Positions",
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description = "The different column numbers for the line guides to draw.",
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path = "rulers",
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type = "list_strings",
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default = { tostring(config.line_limit) or "80" },
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get_value = function(rulers)
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if type(rulers) == "table" then
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local new_rulers = {}
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for _, ruler in ipairs(rulers) do
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table.insert(new_rulers, tostring(ruler))
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end
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return new_rulers
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else
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return { tostring(config.line_limit) }
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end
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end,
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set_value = function(rulers)
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local new_rulers = {}
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for _, ruler in ipairs(rulers) do
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local number = tonumber(ruler)
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if number then
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table.insert(new_rulers, number)
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end
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end
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if #new_rulers == 0 then
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table.insert(new_rulers, config.line_limit)
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end
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return new_rulers
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end
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}
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}
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}, config.plugins.lineguide)
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local function get_ruler(v)
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local result = nil
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if type(v) == 'number' then
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result = { columns = v }
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elseif type(v) == 'table' then
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result = v
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end
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return result
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end
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local draw_overlay = DocView.draw_overlay
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function DocView:draw_overlay(...)
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draw_overlay(self, ...)
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if
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type(config.plugins.lineguide) == "table"
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and
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config.plugins.lineguide.enabled
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and
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not self:is(CommandView)
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then
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local line_x = self:get_line_screen_position(1)
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local character_width = self:get_font():get_width("n")
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local ruler_width = config.plugins.lineguide.width
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local ruler_color = style.guide or style.selection
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for k,v in ipairs(config.plugins.lineguide.rulers) do
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local ruler = get_ruler(v)
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if ruler then
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local x = line_x + (character_width * ruler.columns)
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local y = self.position.y
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local w = ruler_width
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local h = self.size.y
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renderer.draw_rect(x, y, w, h, ruler.color or ruler_color)
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end
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end
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end
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end
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command.add(nil, {
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["lineguide:toggle"] = function()
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config.plugins.lineguide.enabled = not config.plugins.lineguide.enabled
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end
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})
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