实验楼项目课学习笔记-Linux桌面字典

import os

import re

import time

import fcntl

import logging

import pygtk

pygtk.require(‘2.0‘)

import gtk

import gobject

import webkit

import requests

import json

HOME = os.getenv("HOME") + ‘/.youdao-dict/‘

LOG = HOME + ‘/pyoudao.log‘

LOCK = HOME +  ‘/pyoudao.lock‘

QUERY_URL = ‘http://fanyi.youdao.com/openapi.do?keyfrom=tinxing&key=1312427901&type=data&doctype=json&version=1.1&q=‘

if not os.path.exists(HOME):

    os.mkdir(HOME)

logging.basicConfig(filename=LOG, level=logging.DEBUG)

class Dict:

    def __init__(self):

        self.mouse_in = False

        self.popuptime = 0

        self.last_selection = ‘‘

        # 初始化窗口

        self.window = gtk.Window(gtk.WINDOW_POPUP)

        self.window.set_title("pyoudao")

        self.window.set_border_width(3)

        self.window.connect("destroy", lambda w: gtk.main_quit())

        self.window.resize(360, 200)

        # 初始化垂直容器

        vbox = gtk.VBox(False, 0)

        vbox.show()

        # 创建一个事件容器, 并注册selection_recevied事件函数

        eventbox = gtk.EventBox()

        eventbox.connect("selection_received", self._on_selection_received)

        eventbox.connect(‘enter-notify-event‘, self._on_mouse_enter)

        eventbox.connect(‘leave-notify-event‘, self._on_mouse_leave)

        # 注册周期函数_on_timer，每隔500毫秒执行一次

        gobject.timeout_add(500, self._on_timer, eventbox)

        eventbox.show()

        # 创建一个webview

        self.view = webkit.WebView()

        def title_changed(widget, frame, title):

            logging.debug(‘title_changed to %s, will open webbrowser ‘ % title)

            import webbrowser

            webbrowser.open(‘http://dict.youdao.com/search?le=eng&q=‘ + title )

        self.view.connect(‘title-changed‘, title_changed)

        self.view.show()

        # 打包各种控件

        self.window.add(vbox)

        vbox.pack_start(eventbox)

        eventbox.add(self.view)

    def _on_timer(self, widget):

        # 开始检查选择事件

        widget.selection_convert("PRIMARY", "STRING")

        if self.window.get_property(‘visible‘) and not self.mouse_in:

            x, y = self.window.get_position()

            px, py, mods = self.window.get_screen().get_root_window().get_pointer()

            if (px-x)*(px-x) + (py-y)*(py-y) > 400:

                logging.debug(‘distance big enough, hide window‘)

                self.window.hide();

            if(time.time() - self.popuptime > 3):

                logging.debug(‘time long enough, hide window‘)

                self.window.hide();

        return True

    # 如果有字符串被选择，则执行该函数

    def _on_selection_received(self, widget, selection_data, data):

        if str(selection_data.type) == "STRING":

            text = selection_data.get_text()

            if not text:

                return False

            text = text.decode(‘raw-unicode-escape‘)

            if(len(text) > 20):

                return False

            if (not text) or (text == self.last_selection):

                return False

            logging.info("======== Selected String : %s" % text)

            self.last_selection = text

            m = re.search(r‘[a-zA-Z-]+‘, text.encode(‘utf8‘))

            if not m:

                logging.info("Query nothing")

                return False

            word = m.group(0).lower()

            if self.ignore(word):

                logging.info(‘Ignore Word: ‘ + word)

                return False

            logging.info(‘QueryWord: ‘ + word)

            self.query_word(word)

        return False

    # 查询单词

    def query_word(self, word):

        query_url = QUERY_URL + word

        # 使用requests模块获取json字符串

        js= json.loads(requests.get(query_url).text)

        if ‘basic‘ not in js:

            logging.info(‘IgnoreWord: ‘ + word)

            return

        x, y, mods = self.window.get_screen().get_root_window().get_pointer()

        self.window.move(x+15, y+10)

        self.window.present()

        translation = ‘<br/>‘.join(js[‘translation‘])

        if ‘phonetic‘ in js[‘basic‘]:

            phonetic = js[‘basic‘][‘phonetic‘]

        else:

            phonetic = ‘‘

        explains = ‘<br/>‘.join(js[‘basic‘][‘explains‘])

        web = ‘<br/>‘.join( [‘<a href="javascript:void(0);">%s</a>: %s‘%(i[‘key‘], ‘ ‘.join(i[‘value‘])) for i in js[‘web‘][:3] ] )

        html = ‘‘‘

<style>

.add_to_wordbook {

    background: url(http://bs.baidu.com/yanglin/add.png) no-repeat;

    vertical-align: middle;

    overflow: hidden;

    display: inline-block;

    vertical-align: top;

    width: 24px;

    padding-top: 26px;

    height: 0;

    margin-left: .5em;

}

</style>

        <h2>

        %(translation)s

        <span style="color: #0B6121; font-size: 12px">< %(phonetic)s > </span>

        <a href="javascript:void(0);" id="wordbook" class="add_to_wordbook" title="点击在浏览器中打开" onclick="document.title=‘%(word)s‘"></a> <br/>

        </h2>

        <span style="color: #A0A0A0; font-size: 15px">[ %(word)s ] </span>

        <b>基本翻译:</b>

        <p> %(explains)s </p>

        <span style="color: #A0A0A0; font-size: 15px">[ %(word)s ] </span>

        <b>网络释意:</b>

        <p> %(web)s </p>

        ‘‘‘ % locals()

        # 通过webview显示html字符串

        self.view.load_html_string(html, ‘‘)

        self.view.reload()

        self.popuptime = time.time()

    def ignore(self, word):

        if len(word)<=3:

            return True

        return False

    def _on_mouse_enter(self, wid, event):

        logging.debug(‘_on_mouse_enter‘)

        self.mouse_in = True

    def _on_mouse_leave(self, *args):

        logging.debug(‘_on_mouse_leave‘)

        self.mouse_in = False

        self.window.hide()

def main():

    Dict()

    gtk.main()

if __name__ == "__main__":

    f=open(LOCK, ‘w‘)

    try:

        fcntl.flock(f.fileno(), fcntl.LOCK_EX|fcntl.LOCK_NB)

    except:

        print ‘a process is already running!!!‘

        exit(0)

    main()