feat: suppose translate in visual mode

lua/Trans/display.lua

@@ -40,7 +40,7 @@ local function get_title(text, query_res)
 
     pos_info.title = {}
     pos_info.title.word = #query_res.word
-    pos_info.title.phonetic = #query_res.phonetic
+    pos_info.title.phonetic = query_res.phonetic and #query_res.phonetic or 3
     pos_info.title.line = line
     line = line + 1
 end
@@ -220,11 +220,13 @@ local function hl_zh()
 end
 
 local function hl_en()
+    if pos_info.en then
         api.nvim_buf_add_highlight(buf, -1, hl.ref, pos_info.en.line, 0, -1)
         for i = 1, pos_info.en.content, 1 do
             api.nvim_buf_add_highlight(buf, -1, hl.en, pos_info.en.line + i, 0, -1)
         end
     end
+end
 
 local hl_handler = {
     title = hl_title,
@@ -246,21 +248,43 @@ local function clear_tmp_info()
     line = 0
 end
 
-function M.query_cursor()
-    local word = vim.fn.expand('<cword>')
+local function get_visual_selection()
+    local s_start = vim.fn.getpos("'<")
+    local s_end = vim.fn.getpos("'>")
+    assert(s_end[2] == s_start[2])
+    local lin = vim.api.nvim_buf_get_lines(0, s_start[2] - 1, s_end[2], false)[1]
+    local word = string.sub(lin, s_start[3], s_end[3])
+    return word
+end
+
+
+function M.query(mode)
+    assert(buf > 0)
+    local word = ''
+    if mode == 'n' then
+        word = vim.fn.expand('<cword>')
+    elseif mode == 'v' then
+        word = get_visual_selection()
+    else
+        print(mode, 'is invalid')
+        assert(false)
+    end
+
     local res = require("Trans.database").query(word)
     local width, height = set_text(res)
     show_win(width, height)
+    if res then
         set_hl()
         clear_tmp_info()
     end
-
-function M.query()
-    -- TODO:
 end
 
-function M.toggle()
-    -- TODO: wrap some function
+function M.query_cursor()
+    M.query('n')
+end
+
+function M.query_select()
+    M.query('v')
 end
 
 function M.close_win()

lua/Trans/setup.lua

@@ -3,6 +3,7 @@ local db = require("Trans").db
 
 
 vim.api.nvim_create_user_command('TranslateCurosorWord', require("Trans.display").query_cursor, {})
+vim.api.nvim_create_user_command('TranslateSelectWord', require("Trans.display").query_select, {})
 
 
 local group = vim.api.nvim_create_augroup("Trans", { clear = true })
@@ -27,4 +28,7 @@ if auto_close then
     })
 end
 
+
+vim.keymap.set('n', 'mm', '<cmd>TranslateCurosorWord<cr>')
+vim.keymap.set('v', 'mm', '<Esc><cmd>TranslateSelectWord<cr>')
 require("Trans.highlight").set_hl()