Merge pull request #52 from Timofffee/master

Add  plugin `linenumbers`

1 files changed, 85 insertions, 0 deletions

diff --git a/plugins/linenumbers.lua b/plugins/linenumbers.lua
new file mode 100644
index 0000000..fde0a08
--- /dev/null
+++ b/plugins/linenumbers.lua
@@ -0,0 +1,85 @@
+-- mod-version:1 -- lite-xl 1.16
+local config = require "core.config"
+local style = require "core.style"
+local DocView = require "core.docview"
+local common = require "core.common"
+local command = require "core.command"
+
+local draw = DocView.draw_line_gutter
+local get_width = DocView.get_gutter_width
+
+function DocView:draw_line_gutter(idx, x, y, width)
+  if not config.line_numbers and not config.relative_line_numbers then
+    return
+  end
+
+  if config.relative_line_numbers then
+
+    local color = style.line_number
+    local local_idx = idx
+    local align = "right"
+
+    local l1 = self.doc:get_selection(false)
+    if idx == l1 then
+      color = style.line_number2
+      if config.line_numbers then
+        align = "center"
+      else
+        local_idx = 0
+      end
+    else
+      local_idx = math.abs(idx - l1)
+    end
+
+    -- Fix for old version (<=1.16)
+    if width == nil then
+      local gpad = style.padding.x * 2
+      local gw = self:get_font():get_width(#self.doc.lines) + gpad
+      width = gpad and gw - gpad or gw
+    end
+
+    common.draw_text(
+      self:get_font(),
+      color, local_idx, align,
+      x + style.padding.x,
+      y + self:get_line_text_y_offset(),
+      width,  self:get_line_height()
+    )
+  else
+    draw(self, idx, x, y, width)
+  end
+end
+
+function DocView:get_gutter_width(...)
+  if not config.line_numbers and not config.relative_line_numbers then
+    return style.padding.x
+  else
+    return get_width(self, ...)
+  end
+end
+
+command.add(nil, {
+  ["line-numbers:toggle"]  = function()
+    config.line_numbers = not config.line_numbers
+  end,
+
+  ["line-numbers:disable"] = function()
+    config.line_numbers = false
+  end,
+
+  ["line-numbers:enable"]  = function()
+    config.line_numbers = true
+  end,
+
+  ["relative-line-numbers:toggle"]  = function()
+    config.relative_line_numbers = not config.relative_line_numbers
+  end,
+
+  ["relative-line-numbers:enable"]  = function()
+    config.relative_line_numbers = true
+  end,
+
+  ["relative-line-numbers:disable"]  = function()
+    config.relative_line_numbers = false
+  end
+})