initial commit

1 files changed, 84 insertions, 0 deletions

diff --git a/runtime/lua/core/ui.lua b/runtime/lua/core/ui.lua
new file mode 100644
index 0000000..9ef25d1
--- /dev/null
+++ b/runtime/lua/core/ui.lua
@@ -0,0 +1,84 @@
+local M = {}
+
+local function hex_to_rgba(hex)
+  local h = hex:gsub("#", "")
+  if #h ~= 6 then
+    return 0, 0, 0, 255
+  end
+
+  local r = tonumber(h:sub(1, 2), 16) or 0
+  local g = tonumber(h:sub(3, 4), 16) or 0
+  local b = tonumber(h:sub(5, 6), 16) or 0
+  return r, g, b, 255
+end
+
+local function current_buffer_label()
+  local path = editor.buffer_path()
+  if not path then
+    return "*scratch*"
+  end
+  return path
+end
+
+function M.update_modeline(state)
+  if not state.mode_line_buffer then
+    return
+  end
+
+  local dirty = editor.buffer_modified() and "*" or "-"
+  local cmd_mode = string.format("[%s-cmd]", state.command_kind or "lua")
+  local mode = state.command_mode and cmd_mode or string.format("[%s]", state.mode or "normal")
+  local leader = state.leader_pending and " [leader]" or ""
+  local text = string.format("lemacs %s | %s | %s %s%s", dirty, current_buffer_label(), state.current_theme, mode, leader)
+  editor.aux_buffer_set_text(state.mode_line_buffer, text)
+end
+
+function M.set_message(state, text)
+  state.message_text = text
+  if state.message_buffer then
+    editor.aux_buffer_set_text(state.message_buffer, text)
+  end
+end
+
+function M.update_commandline_buffer(state)
+  if not state.command_buffer then
+    return
+  end
+  local prefix = (state.command_kind == "command") and ":" or ":lua "
+  editor.aux_buffer_set_text(state.command_buffer, prefix .. state.command_text)
+end
+
+function M.setup_layout(state, palette)
+  local width = editor.screen_width()
+  local height = editor.screen_height()
+  local mode_h = 28
+  local msg_h = 24
+  local cmd_h = state.command_mode and 24 or 0
+  local body_h = height - mode_h - msg_h - cmd_h
+  if body_h < 1 then
+    body_h = 1
+  end
+
+  local base00_r, base00_g, base00_b = hex_to_rgba(palette.base00)
+  local base01_r, base01_g, base01_b = hex_to_rgba(palette.base01)
+  local base02_r, base02_g, base02_b = hex_to_rgba(palette.base02)
+  local base03_r, base03_g, base03_b = hex_to_rgba(palette.base03)
+  local base05_r, base05_g, base05_b = hex_to_rgba(palette.base05)
+  local base06_r, base06_g, base06_b = hex_to_rgba(palette.base06)
+  local base09_r, base09_g, base09_b = hex_to_rgba(palette.base09)
+
+  editor.layout_reset()
+  editor.layout_add_view(0, 0, 0, 0, width, body_h, true, base00_r, base00_g, base00_b, 255, base05_r, base05_g, base05_b, 255)
+  editor.layout_add_view(1, state.mode_line_buffer, 0, body_h, width, mode_h, false, base02_r, base02_g, base02_b, 235, base06_r, base06_g, base06_b, 255)
+  editor.layout_add_view(1, state.message_buffer, 0, body_h + mode_h, width, msg_h, false, base01_r, base01_g, base01_b, 240, base09_r, base09_g, base09_b, 255)
+
+  if state.command_mode then
+    editor.layout_add_view(1, state.command_buffer, 0, body_h + mode_h + msg_h, width, cmd_h, false, base03_r, base03_g, base03_b, 245, base06_r, base06_g, base06_b, 255)
+  end
+end
+
+function M.current_buffer_label()
+  return current_buffer_label()
+end
+
+return M