开始

一直在Linux下，遇到网页上的不会的英语单词都是直接使用Chrome的插件解决，但是本地却要打开谷歌翻译，于是想自己写个翻译的软件。代码也就几百行，使用的是py-googletrans 这个包。我觉得在Linux桌面环境下，不管用QT， Gtk+还是Electron等等，先共同创造更多实用的软件，而不是讨论太多技术之间的优差。

使用googletrans

https://github.com/ssut/py-googletrans
基本使用:

from googletrans import Translator
translator = Translator(service_urls=['translate.google.cn'])
p = translator.translate('只是', dest='en')
print(p)

相信上面的代码直接可以看懂。

使用PyGTK 3 +

https://python-gtk-3-tutorial.readthedocs.io/en/latest/
https://lazka.github.io/pgi-docs/
https://pygobject.readthedocs.io/en/latest/getting_started.html
第一个链接是PyGtk教程，第二个是api查询，第三个链接是安装依赖wiki。
当你看完链接2前面几章，相信也知道的差不多了。

code

import gi
import functools
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
from googletrans import Translator


translator = Translator(service_urls=['translate.google.cn'])

cn_translate = functools.partial(translator.translate, dest='zh-cn')
en_translate = functools.partial(translator.translate, dest='en')


class MainWindow(Gtk.Window):
    def __init__(self):
        super(MainWindow, self).__init__(Gtk.WindowType.TOPLEVEL)
        self.set_default_size(360, 300)
        self._init_view()
        self.set_border_width(10)
        self.header_bar = self._create_header_bar()
        self.set_titlebar(self.header_bar)

    def _create_header_bar(self):
        hb = Gtk.HeaderBar()
        hb.set_decoration_layout("menu:close")
        hb.set_show_close_button(True)
        hb.props.title = "Translate"
        # refresh button
        refresh_btn = Gtk.Button.new_from_icon_name("view-refresh-symbolic", Gtk.IconSize.BUTTON)
        # refresh_btn.connect("clicked", lambda _: app_state.async_update(self))
        hb.pack_start(refresh_btn)
        # settings button
        settings_btn = Gtk.Button.new_from_icon_name("emblem-system-symbolic", Gtk.IconSize.BUTTON)
        # settings_btn.connect('clicked', self.settings_btn_clicked)
        hb.pack_start(settings_btn)
        return hb

    def _init_view(self):
        vbox = Gtk.Box(orientation=Gtk.Orientation.VERTICAL, spacing=10)

        scrolledwindow1 = Gtk.ScrolledWindow()
        scrolledwindow1.set_hexpand(True)
        scrolledwindow1.set_vexpand(True)
        text_view1 = Gtk.TextView()

        self.textbuffer1 = text_view1.get_buffer()

        text_view1.set_left_margin(10)
        text_view1.set_top_margin(10)
        text_view1.set_wrap_mode(Gtk.WrapMode.WORD)
        scrolledwindow1.add(text_view1)

        vbox.pack_start(scrolledwindow1, True, True, 0)

        hbox = Gtk.Box(spacing=5)
        self.combo = Gtk.ComboBoxText()
        self.combo.insert(0, "0", "中文")
        self.combo.insert(1, "1", "English")
        self.combo.set_active_id('0')

        hbox.pack_start(self.combo, False, False, 0)

        bt_translate = Gtk.Button(label='translate')
        bt_translate.connect('clicked', self.translate)

        hbox.pack_end(bt_translate, False, False, 0)

        vbox.pack_start(hbox, False, False, 0)

        scrolledwindow2 = Gtk.ScrolledWindow()
        scrolledwindow2.set_hexpand(True)
        scrolledwindow2.set_vexpand(True)
        text_view2 = Gtk.TextView()
        self.textbuffer2 = text_view2.get_buffer()

        text_view2.set_left_margin(10)
        text_view2.set_top_margin(10)
        scrolledwindow2.add(text_view2)
        text_view2.set_wrap_mode(Gtk.WrapMode.WORD)

        vbox.pack_start(scrolledwindow2, True, True, 0)

        self.add(vbox)

    def translate(self, widget):
        start = self.textbuffer1.get_start_iter()
        end = self.textbuffer1.get_end_iter()
        text = self.textbuffer1.get_text(start, end, False)
        if self.combo.get_active_id() == '0':
            print('===0')
        else:
            print('==', self.combo.get_active_id())
        _translate = cn_translate if self.combo.get_active_id() == '0' else en_translate
        trans = _translate(text)
        self.textbuffer2.set_text('')
        # str_buf = """<span size="x-large">{}\n{}</span>""".format(trans.text, trans.extra_data['all-translations'])
        str_buf = """<span size="x-large">{}\n\n</span>""".format(trans.text)

        self.textbuffer2.insert_markup(self.textbuffer2.get_end_iter(), str_buf, -1)

        try:
            str_buf = """<span size="small">{}\n{}</span>""".format(trans.extra_data['all-translations'][0][0], str(trans.extra_data['all-translations'][0][1]))
            self.textbuffer2.insert_markup(self.textbuffer2.get_end_iter(), str_buf, -1)
        except Exception as e:
            pass

        print(trans)
        print(trans.extra_data['all-translations'])


if __name__ == '__main__':
    win = MainWindow()
    win.connect('destroy', Gtk.main_quit)
    win.show_all()
    Gtk.main()

现在只实现了中文和英文的翻译，发音这方面还有问题等等。
有时间的话会继续完善, 欢迎指出问题，或者好的建议
github： https://github.com/Baloneo/py-gtk-translate