Add simple small file icons set for TreeView

2 files changed, 113 insertions, 0 deletions

diff --git a/README.md b/README.md
index 779d1c0..9459549 100644
--- a/README.md
+++ b/README.md
@@ -118,6 +118,7 @@ Plugin | Description
 [`motiontrail`](plugins/motiontrail.lua?raw=1) | Adds a motion-trail to the caret *([screenshot](https://user-images.githubusercontent.com/3920290/83256814-085ccb00-a1ab-11ea-9e35-e6633cbed1a9.gif))*
 ~~[`nagbar`](https://github.com/takase1121/lite-nagbar)*~~ | integrated in lite-xl ~~consistent and _beautiful_ confirmation dialogs for lite and lite-xl *([gif](https://raw.githubusercontent.com/takase1121/lite-nagbar/master/assets/preview.gif))*~~
 [`navigate`](plugins/navigate.lua?raw=1) | Allows moving back and forward between document positions, reducing the amount of scrolling
+[`nonicons`](plugins/nonicons.lua?raw=1) | File icons set for TreeView. Download [font](https://github.com/yamatsum/nonicons/raw/master/dist/nonicons.ttf) to your config/fonts folder
 [`open_ext`](plugins/open_ext.lua?raw=1) | Automatically prompts you if you tried to open a binary file in the editor
 [`openfilelocation`](plugins/openfilelocation.lua?raw=1) | Opens the parent directory of the current file in the file manager
 [`openselected`](plugins/openselected.lua?raw=1) | Opens the selected filename or url
diff --git a/plugins/nonicons.lua b/plugins/nonicons.lua
new file mode 100644
index 0000000..076f29f
--- /dev/null
+++ b/plugins/nonicons.lua
@@ -0,0 +1,112 @@
+-- mod-version:2 -- lite-xl 2.0
+local core = require "core"
+local common = require "core.common"
+local style = require "core.style"
+local ContextMenu = require "core.contextmenu"
+local RootView = require "core.rootview"
+local TreeView = require "plugins.treeview"
+
+
+local original_draw = TreeView.draw
+local icon_font = renderer.font.load(USERDIR .. "/fonts/nonicons.ttf", 15 * SCALE)
+
+local icons = {
+  [".lua"] = { "#51a0cf", "" },
+  [".md"]  = { "#519aba", "" }, -- Markdown
+  [".cpp"] = { "#519aba", "" },
+  [".c"]   = { "#599eff", "" },
+  [".h"] = { "#599eff", "" },
+  [".py"]  = { "#3572A5", "" }, -- Python
+  [".pyc"]  = { "#519aba", "" }, [".pyd"]  = { "#519aba", "" },
+  [".php"] = { "#a074c4", "" },
+  [".cs"] = { "#596706", "" },  -- C#
+  [".conf"] = { "#6d8086", "" }, [".cfg"] = { "#6d8086", "" },
+  [".toml"] = { "#6d8086", "" },
+  [".yaml"] = { "#6d8086", "" }, [".yml"] = { "#6d8086", "" },
+  [".json"] = { "#854CC7", "" },
+  [".css"] = { "#563d7c", "" },
+  [".html"] = { "#e34c26", "" },
+  [".js"] = { "#cbcb41", "" },  -- JavaScript
+  [".go"] = { "#519aba", "" },
+  [".jpg"] = { "#a074c4", "" }, [".png"] = { "#a074c4", "" },
+  [".sh"] = { "#4d5a5e", "" },  -- Shell
+  [".java"] = { "#cc3e44", "" },
+  [".scala"] = { "#cc3e44", "" },
+  [".kt"] = { "#F88A02", "" },  -- Kotlin
+  [".pl"] = { "#519aba", "" },  -- Perl
+  [".r"] = { "#358a5b", "" },
+  [".rake"] = { "#701516", "" },
+  [".rb"] = { "#701516", "" },  -- Ruby
+  [".rs"] = { "#dea584", "" },  -- Rust
+  [".rss"] = { "#cc3e44", "" },
+  [".sql"] = { "#dad8d8", "" },
+  [".swift"] = { "#e37933", "" },
+  [".ts"] = { "#519aba", "" },  -- TypeScript
+  [".elm"] = { "#519aba", "" },
+  [".diff"] = { "#41535b", "" },
+  [".ex"] = { "#a074c4", "" }, [".exs"] = { "#a074c4", "" },  -- Elixir
+  -- Following without special icon:
+  [".awk"] = { "#4d5a5e", "" },
+  [".nim"] = { "#F88A02", "" },
+}
+
+function TreeView:draw()
+  self:draw_background(style.background2)
+
+  local icon_width = icon_font:get_width("")
+  local spacing = icon_font:get_width("") / 2
+
+  local doc = core.active_view.doc
+  local active_filename = doc and system.absolute_path(doc.filename or "")
+
+  for item, x,y,w,h in self:each_item() do
+    local color = style.text
+
+    -- highlight active_view doc
+    if item.abs_filename == active_filename then
+      color = style.accent
+    end
+
+    -- hovered item background
+    if item == self.hovered_item then
+      renderer.draw_rect(x, y, w, h, style.line_highlight)
+      color = style.accent
+    end
+
+    -- allow for color overrides
+    local icon_color = self:color_for_item(item.abs_filename) or color
+
+    -- icons
+    x = x + item.depth * style.padding.x + style.padding.x
+    if item.type == "dir" then
+      local icon1 = item.expanded and "" or "" -- 61726 and 61728
+      local icon2 = item.expanded and "" or "" -- 61771 and 61772
+      x = x - spacing
+      common.draw_text(icon_font, color, icon1, nil, x, y, 0, h)
+      x = x + style.padding.x + spacing
+      common.draw_text(icon_font, color, icon2, nil, x, y, 0, h)
+      x = x + icon_width
+    else
+      x = x + style.padding.x
+      local icon = ""
+      local ext = item.name:match("^.+(%..+)$")
+      if icons[ext] ~= nil then
+        icon_color = { common.color(icons[ext][1]) }
+        icon = icons[ext][2]
+      end
+      common.draw_text(icon_font, icon_color, icon, nil, x, y, 0, h)
+      x = x + icon_width
+    end
+
+    -- text
+    x = x + spacing
+    x = common.draw_text(style.font, color, item.name, nil, x, y, 0, h)
+  end
+
+  self:draw_scrollbar()
+  if self.hovered_item and self.tooltip.alpha > 0 then
+    core.root_view:defer_draw(self.draw_tooltip, self)
+  end
+end
+
+