作者：leve1031
花了前后将近一个星期的时间，终于用PyQT实现了我的第一个程序。本程序实现了使用QThread后台处理数据、QThread的暂停，恢复、停止等功能。
主要有几个问题：
1、后台单独线程处理数据的问题；最初不明白QT在子线程中不能操作GUI的问题，因此查了很久的GUI的crash的问题
2、界面的布局；理解了gridLayout这个非常方便的布局方法。
代码片段
1. # -*- coding: utf-8 -*-
2.
3. """
4. Module implementing umd_MainWindow.
5. """
6. import sys, os, re, time,sip
7. from PyQt4 import QtGui, QtCore
8. from dict4ini import DictIni
9. from Ui_ebook_txt import Ui_umd_MainWindow
10. class eBookException(Exception):
11. pass
12. class ebookParseWorker(QtCore.QThread):
13. '''QT中子线程内不能操作GUI界面，切记切记'''
14. def __init__(self, parent=None):
15. .QThread.__init__(self, parent)
16. .exiting = False
17. .isWait=False
18. .data={}
19. def setVar(self, name, value):
20. .data[name]=value
21. def __del__(self):
22.
23. .exiting = True
24. .wait()
25. def buildRegx(self):
26. .alert(regx)
27. if self.data['chmChapterRegx'] is None:
28. ='pages\[(\d+)\]\s*=\s*\[(.*)\];'
29. try:
30. .chapterInfo=re.compile(self.data['chmChapterRegx'])
31. except:
32. .alert('列表处理正则表达式不正确')
33. return False
34. .chapterList=[]
35. return True
36. def getChapterList(self):
37. if os.path.exists(unicode(self.data['chmChapterJs'])) ==False:
38. .alert('章节列表JS文件%s不存在'%(self.data['chmChapterJs']))
39. return False
40. if self.data['inputCharset'] is None or self.data['inputCharset'].strip()=='':
41. .data['inputCharset']='gbk'
42. =self.chapterInfo.findall(open(unicode(self.data['chmChapterJs']),'rb').read())
43. =''
44. for x in m:
45. =x[1].split(',')
46. ={}
47. if len(oldChapterInfo)==4:
48. if oldChapterInfo[3].strip('"').strip("'")[0:5]!='<1:
49. ')
50. return False
51. return self.chapterList
52. def run(self):
53. #是否触发错误
54. error=False
55. self.alert("开始处理章节内容")
56. '] is None or self.data['inputCharset'].strip()=='':
57. ']='gbk'
58. '] is None or self.data['outputCharset'].strip()=='':
59. ']='gbk'
60. '] is None or self.data['oldChapterTxtDir'].strip()=='' :
61. ')
62. error=True
63. '] is None or self.data['newChapterTxtDir'].strip()=='':
64. ']=self.data['oldChapterTxtDir']
65. '])) ==False:
66. ']))
67. i=0
68. '
69. '
70. '
71. currentNum=0
72. self.emit(QtCore.SIGNAL("setProcegressBar(int)"),len(self.chapterList))
73. '] is None:
74. regx=u""
75.
76. '].split("\n"):
77. #print x
78. try:
79. re.compile(x)
80. except:
81. [ %s ]部分不正确'%(x)))
82. error=True
83. ')
84. if error==False:
85. for x in self.chapterList:
86. while self.isWait:
87. self.sleep(1)
88. #self.wait(1)#使用wait的时候控制台会有输出
89. currentNum+=1
90. '])
91. #return
92. ']+'/'+x['filename']+self.data['oldChapterTxtExt']
93. ']!=tmpVolName:
94. chapterCount=1
95. i+=1
96. '+str(i)+' '+x['volName']
97. if i>1:
98. <strong><span style="color: red;">处理（%s）完毕！</span><strong>'%(str(i-1).zfill(2)+'卷 '+tmpVolName)))
99. ']
100. '].replace(u':',u'-')#必须去掉:否则可能出现文件名被截断的情况
101. %s……'%(str(i).zfill(2)+'卷 '+volname)))
102. else:
103. chapterCount+=1
104. if os.path.isfile(unicode(filename)):
105. ']).encode('utf-8')
106. '].split("\n"):
107. ',content)
108. #去掉document.write('
109. =re.sub("\s*document\.write\s*\(\s*['|\"]\s*", '',content)
110. ");这种标签
111. \s*['|\"]\s*\)\s*[;]?", "\r\n\r\n",content)
112. content=content.replace("\n","\r\n\r\n").replace("\");","\r\n\r\n")
113. )",'').replace("
114.
115. ","\r\n\r\n")[4:]
116. #去掉多余的类似或的标签
117. <[a-z\s/]+>", '',content)
118. if len(x['chapterName'].split(' '))>1:
119. chapter=x['chapterName'][x['chapterName'].index(' ')+1:]
120. else:
121. chapter=x['chapterName']
122. if len(x['volName'].split(' '))==2:
123. volname=x['volName'][x['volName'].index(' ')+1:]
124. else:
125. volname=x['volName']
126. #递归判断去除章节名前的数字
127. try:
128. int(chapter[0:4])
129. chapter=chapter[4:]
130. except:
131. try:
132. int(chapter[0:3])
133. chapter=chapter[3:]
134. except:
135. try:
136. int(chapter[0:2])
137. chapter=chapter[2:]
138. except:
139. try:
140. int(chapter[0:1])
141. chapter=chapter[1:]
142. except:
143. chapter=chapter
144. chapter=' 第'+str(chapterCount).zfill(3)+'章 '+chapter
145.
146. filename=self.data['newChapterTxtDir']+'/第'+str(i).zfill(2)+'卷 '+volname+chapter+'.txt'
147. #self.alert(filename)
148. #return
149. filename=filename.strip()
150. try:
151. f=open(unicode(filename),'wb')
152. except:
153. self.alert(unicode('写入文件“%s”错误'%(filename)))
154. #self.alert('写入文件“%s”错误'%(filename))
155. '''try:
156. f.write(content.decode('utf-8').encode(self.data['outputCharset']))
157. except:
158. self.alert(unicode('写入文件（%s）失败！'%(filename)))
159. f.close()'''
160. f.write(content.decode('utf-8').encode(self.data['outputCharset']))
161. f.close()
162. #del content
163. #self.window.umd_progressBar.setValue(currentNum)
164. (int)"),currentNum)
165. #self.window.umd_textEditMessageOutPut.append(unicode('处理（%s）完毕！'%(str(i).zfill(2)+'卷 '+volname+chapter)))
166. self.alert(unicode('处理文件（%s）完毕！'%(str(i).zfill(2)+'卷 '+volname+chapter)))
167. else:
168. self.alert(unicode('处理失败: 章节文件不存在'))
169. #self.alert('章节列表文件处理完毕')
170. #import ctypes
171. #libc = ctypes.CDLL('libc.so.6')
172. #libc.printf('Hello world!')
173. def alert(self, txt):
174. #self.window.updateStatuBar(txt)
175. (QString)"),QtCore.QString(unicode(txt)))
176. return
177.
178. class umd_MainWindow(QtGui.QMainWindow, Ui_umd_MainWindow):
179. ""
180. Class documentation goes here.
181. """
182. def __init__(self, parent = None):
183. ""
184. Constructor
185. """
186. QtGui.QMainWindow.__init__(self, parent)
187. try:
188. #某些版本必须使用reload(sys)来重新载入sys模块才包含有setdefaultencoding方法
189. reload(sys)
190. sys.setdefaultencoding('utf-8')
191. except:
192. sys.setappdefaultencoding('utf-8')
193. #self.bmpdir=os.path.join(os.path.dirname(os.path.abspath(sys.argv[0])), 'res')
194. self.setupUi(self)
195. #以下为窗口自动居中
196. screen = QtGui.QDesktopWidget().screenGeometry()
197. size = self.geometry()
198. self.move((screen.width()-size.width())/2, (screen.height()-size.height())/2)
199. #设置按钮为隐藏
200. #self.umd_pushButton_pause.setHidden(True)
201. self.umd_pushButton_pause.hide()
202. self.umd_pushButton_Resume.hide()
203. self.umd_pushButton_Stop.hide()
204. #载入上一次的配置文件
205. self.cfg=DictIni(os.getcwd()+'/ebook.ini',encoding= 'utf-8')
206. if len(self.cfg.recentSetting)>0:
207. self.loadRecentSetting()
208. #以下开始设置进度条
209. self.umd_progressBar.setRange(0, 100)
210. self.umd_progressBar.setValue(0)
211. #self.showFullScreen()
212. #self.showNormal()
213. #self.isMinimized()
214. #创建一个文件处理线程
215. self.thread = ebookParseWorker(parent)
216. #线程退出
217. ()"), self.finished)
218. ()"), self.finished)
219. #线程输出
220. (QString)"), self.message)
221. (int)"), self.updateProcegressBar)
222. (int)"), self.setProcegressBar)
223. #open('./log.txt','wb').write(self.bmpdir)
224. #线程定义结束
225. pass
226. def loadRecentSetting(self):
227. self.umd_lineEditChapterTxtNew.setText(self.cfg.recentSetting.newTxtDir.decode('utf-8'))
228. self.umd_textEditChapterContentRegx.setPlainText(self.cfg.recentSetting.chapterContentRegx.decode('utf-8'))
229. self.umd_lineEditChapterJs.setText(self.cfg.recentSetting.chapterJs.decode('utf-8'))
230. self.umd_lineEditChapterRegx.setText(self.cfg.recentSetting.chapterRegx.decode('utf-8'))
231. self.umd_lineEditChapterTxtExt.setText(self.cfg.recentSetting.txtExt.decode('utf-8'))
232. self.umd_lineEditChapterTxtOld.setText(self.cfg.recentSetting.oldTxtDir.decode('utf-8'))
233. inputCharsetIndex=self.umd_comboBoxInputCharset.findText(self.cfg.recentSetting.inputCharset.decode('utf-8'))
234. self.umd_comboBoxInputCharset.setCurrentIndex(inputCharsetIndex)
235. outputCharsetIndex=self.umd_comboBoxOutputCharset.findText(self.cfg.recentSetting.outputCharset.decode('utf-8'))
236. self.umd_comboBoxOutputCharset.setCurrentIndex(outputCharsetIndex)
237.
238. umdChapterContentRegx=str(self.umd_textEditChapterContentRegx.toPlainText().toUtf8())
239. #self.umd_lineEditChapterJs.setText(umd_textEditChapterContentRegx)
240. umdChapterRegx=str(self.umd_lineEditChapterRegx.text().toUtf8())
241. umdChapterTxtExt=str(self.umd_lineEditChapterTxtExt.text().toUtf8())
242. umdChapterTxtOld=str(self.umd_lineEditChapterTxtOld.text().toUtf8())
243. umdChapterTxtNew=str(self.umd_lineEditChapterTxtNew.text().toUtf8())
244. umdChapterJs=str(self.umd_lineEditChapterJs.text().toUtf8())
245. #原始文件编码
246. umdInputCharset=str(self.umd_comboBoxInputCharset.currentText().toUtf8())
247. #新文件编码
248. umdOutputCharset=self.umd_comboBoxOutputCharset.currentText().toUtf8().__str__()
249. pass
250. def closeEvent(self, event):
251. ", "消息", None, QtGui.QApplication.UnicodeUTF8),
252. ", "确认关闭窗口？", None, QtGui.QApplication.UnicodeUTF8), QtGui.QMessageBox.Yes, QtGui.QMessageBox.No)
253.
254. if reply == QtGui.QMessageBox.Yes:
255. event.accept()
256. else:
257. event.ignore()
258. def alert(self, txt):
259. response = False
260. # buttons texts
261. ", "关闭", None, QtGui.QApplication.UnicodeUTF8)
262. #RELOAD='reload'
263. #CANCEL='cancel'
264. message = QtGui.QMessageBox(self)
265. ",txt, None, QtGui.QApplication.UnicodeUTF8),)
266. ", "消息", None, QtGui.QApplication.UnicodeUTF8),)
267. message.setIcon(QtGui.QMessageBox.Warning)
268. message.addButton(Close, QtGui.QMessageBox.AcceptRole)
269. #message.addButton(RELOAD, QtGui.QMessageBox.DestructiveRole)
270. #message.addButton(CANCEL, QtGui.QMessageBox.RejectRole)
271. #message.setDetailedText(txt)
272. message.exec_()
273. response = message.clickedButton().text()
274. '''
275. if response == SAVE:
276. fd = QtGui.QFileDialog(self)
277. newfile = fd.getSaveFileName()
278. if newfile:
279. s = codecs.open(newfile,'w','utf-8')
280. s.write(unicode(self.ui.editor_window.toPlainText()))
281. s.close()
282. self.ui.button_save.setEnabled(False)
283. # new file, remove old and add the new one to the watcher
284. if self.filename and str(newfile) != str(self.filename):
285. self.watcher.removePath(self.filename)
286. self.watcher.addPath(newfile)
287. self.filename = newfile
288. # reload the text in the editor
289. elif response == RELOAD:
290. s = codecs.open(self.filename,'r','utf-8').read()
291. self.ui.editor_window.setPlainText(s)
292. self.ui.button_save.setEnabled(False)
293. '''
294. ")
295. def on_umd_toolButtonChapterTxtNew_clicked(self):
296. ""
297. .
298. """
299. #raise NotImplementedError
300. dlg=QtGui.QFileDialog(self)
301. oldDir=unicode(self.umd_lineEditChapterTxtNew.text())
302. if oldDir.strip()=='':
303. oldDir=os.getcwd()
304. ", "请选择处理后的TXT文件的位置", None, QtGui.QApplication.UnicodeUTF8), oldDir)
305. if os.path.isdir(self.chapterTxtDirOld):
306. self.umd_lineEditChapterTxtNew.setText(self.chapterTxtDirOld)
307.
308. def setProcegressBar(self, i):
309. self.umd_progressBar.setRange(0, i)
310. pass
311. def updateProcegressBar(self, i):
312. self.umd_progressBar.setValue(i)
313. pass
314. def message(self, txt):
315. self.umd_textEditMessageOutPut.append(txt)
316.
317. def finished(self):
318. #print '处理完毕'
319. self.umd_textEditMessageOutPut.append(unicode('所有内容处理完毕'))
320. #处理完毕，隐藏暂停和停止按钮
321. self.umd_pushButton_pause.hide()
322. self.umd_pushButton_Resume.hide()
323. self.umd_pushButton_Stop.hide()
324. self.umd_pushButton_submit.show()
325. self.umd_pushButton_close.show()
326. #self.umd_plainTextEditMessageOutPut.appendPlainText(unicode('所有内容处理完毕'))
327. ")
328. def on_umd_pushButton_Resume_clicked(self):
329. self.thread.isWait=False
330. self.umd_pushButton_pause.show()
331. self.umd_pushButton_Resume.hide()
332. self.umd_pushButton_Stop.show()
333. pass
334. ")
335. def on_umd_pushButton_Stop_clicked(self):
336. self.thread.terminate()
337. self.umd_pushButton_submit.show()
338. self.umd_pushButton_close.show()
339. self.umd_pushButton_pause.hide()
340. self.umd_pushButton_Resume.hide()
341. self.umd_pushButton_Stop.hide()
342. ")
343. def on_umd_pushButton_pause_clicked(self):
344. self.thread.isWait=True
345. #隐藏按钮
346. self.umd_pushButton_pause.hide()
347. self.umd_pushButton_Resume.show()
348. self.umd_pushButton_Stop.show()
349. pass
350. ")
351. def on_umd_toolButtonChapterTxtOld_clicked(self):
352. ""
353. .
354. """
355. dlg=QtGui.QFileDialog(self)
356. oldDir=unicode(self.umd_lineEditChapterTxtOld.text())
357. if oldDir.strip()=='':
358. oldDir=os.getcwd()
359. ", "请选择CHM导出的TXT文件的位置", None, QtGui.QApplication.UnicodeUTF8), oldDir)
360. if os.path.isdir(self.chapterTxtDirOld):
361. self.umd_lineEditChapterTxtOld.setText(self.chapterTxtDirOld)
362.
363. ")
364. def on_umd_toolButtonChapterJs_clicked(self):
365. ""
366. .
367. """
368. dlg=QtGui.QFileDialog(self)
369. oldDir=unicode(self.umd_lineEditChapterJs.text())
370. if oldDir.strip()=='':
371. oldDir=os.getcwd()
372. ", "请选择目录列表JS位置", None, QtGui.QApplication.UnicodeUTF8), oldDir,QtGui.QApplication.translate("umd_MainWindow", "js文件(*.js);;文本文件(*.txt);;所有文件(*)", None, QtGui.QApplication.UnicodeUTF8))
373. if os.path.isfile(self.chapterJsFilename):
374. dir=os.path.dirname(unicode(self.chapterJsFilename))
375. #对于从CHM中展开的电子书，一般保持这样的结构
376. if dir[-2:]=='js':
377. dir=dir[0:len(dir)-2]+'txt'
378. #self.alert(dir[-2:])
379. self.umd_lineEditChapterJs.setText(self.chapterJsFilename)
380. self.umd_lineEditChapterTxtOld.setText(dir)
381.
382. ")
383. def on_umd_pushButton_submit_clicked(self):
384. ""
385. .
386. """
387. #raise NotImplementedError
388. umdChapterContentRegx=str(self.umd_textEditChapterContentRegx.toPlainText().toUtf8())
389. #print umdChapterContentRegx
390. #self.umd_lineEditChapterJs.setText(umd_textEditChapterContentRegx)
391. umdChapterRegx=str(self.umd_lineEditChapterRegx.text().toUtf8())
392. umdChapterTxtExt=str(self.umd_lineEditChapterTxtExt.text().toUtf8())
393. umdChapterTxtOld=str(self.umd_lineEditChapterTxtOld.text().toUtf8())
394. umdChapterTxtNew=str(self.umd_lineEditChapterTxtNew.text().toUtf8())
395. umdChapterJs=str(self.umd_lineEditChapterJs.text().toUtf8())
396. #原始文件编码
397. umdInputCharset=str(self.umd_comboBoxInputCharset.currentText().toUtf8())
398. #新文件编码
399. umdOutputCharset=self.umd_comboBoxOutputCharset.currentText().toUtf8().__str__()
400. '''
401. >>>print type(self.umd_comboBoxInputCharset.currentText())
402. >>>
403. >>>print type(self.umd_comboBoxInputCharset.currentText().toUtf8())
404. >>>
405. >>>print str(self.umd_comboBoxInputCharset.currentText()).encode('utf-8')
406. >>>选择编码
407. >>>dir(self.umd_comboBoxInputCharset.currentText())
408. >>>['KeepEmptyParts', 'NormalizationForm', 'NormalizationForm_C', 'NormalizationForm_D', 'NormalizationForm_KC', 'NormalizationForm_KD', 'SectionCaseInsensitiveSeps', 'SectionDefault', 'SectionFlag', 'SectionFlags', 'SectionIncludeLeadingSep', 'SectionIncludeTrailingSep', 'SectionSkipEmpty', 'SkipEmptyParts', 'SplitBehavior', '__add__', '__class__', '__contains__', '__delattr__', '__dict__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__getitem__', '__gt__', '__hash__', '__iadd__', '__imul__', '__init__', '__le__', '__len__', '__lt__', '__module__', '__mul__', '__ne__', '__new__', '__radd__', '__reduce__', '__reduce_ex__', '__repr__', '__rmul__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', 'append', 'arg', 'at', 'capacity', 'chop', 'clear', 'compare', 'contains', 'count', 'endsWith', 'fill', 'fromAscii', 'fromLatin1', 'fromLocal8Bit', 'fromUtf8', 'indexOf', 'insert', 'isEmpty', 'isNull', 'isRightToLeft', 'isSimpleText', 'lastIndexOf', 'left', 'leftJustified', 'length', 'localeAwareCompare', 'mid', 'normalized', 'number', 'prepend', 'push_back', 'push_front', 'remove', 'repeated', 'replace', 'reserve', 'resize', 'right', 'rightJustified', 'section', 'setNum', 'simplified', 'size', 'split', 'squeeze', 'startsWith', 'toAscii', 'toCaseFolded', 'toDouble', 'toFloat', 'toInt', 'toLatin1', 'toLocal8Bit', 'toLong', 'toLongLong', 'toLower', 'toShort', 'toUInt', 'toULong', 'toULongLong', 'toUShort', 'toUpper', 'toUtf8', 'trimmed', 'truncate']
409. >>>self.umd_comboBoxInputCharset.currentText().__str__()
410. >>>选择编码
411. '''
412. #保存设置
413. self.cfg.recentSetting.oldTxtDir=umdChapterTxtOld
414. self.cfg.recentSetting.newTxtDir=umdChapterTxtNew
415. self.cfg.recentSetting.txtExt=umdChapterTxtExt
416. self.cfg.recentSetting.chapterJs=umdChapterJs
417. self.cfg.recentSetting.chapterRegx=umdChapterRegx
418. self.cfg.recentSetting.chapterContentRegx=umdChapterContentRegx
419. self.cfg.recentSetting.inputCharset=umdInputCharset
420. self.cfg.recentSetting.outputCharset=umdOutputCharset
421. self.cfg.save()
422. #开始操作
423. #self.alert(umdChapterContentRegx)
424. #重置进度条
425. self.umd_progressBar.setValue(0)
426. #重置状态窗口
427. self.umd_textEditMessageOutPut.clear()
428. #self.umd_plainTextEditMessageOutPut.clear()
429. '''self.thread.setVar('chmChapterRegx', unicode(umdChapterRegx))
430. self.thread.setVar('chmChapterJs', unicode(umdChapterJs))
431. self.thread.setVar('oldChapterTxtDir', unicode(umdChapterTxtOld))
432. self.thread.setVar('inputCharset', unicode(umdInputCharset))
433. self.thread.setVar('oldChapterTxtExt', unicode(umdChapterTxtExt))
434. self.thread.setVar('chapterTxtRegx', unicode(umdChapterContentRegx))
435. self.thread.setVar('newChapterTxtDir', unicode(umdChapterTxtNew))
436. self.thread.setVar('outputCharset', unicode(umdOutputCharset))'''
437. self.thread.setVar('chmChapterRegx', umdChapterRegx)
438. self.thread.setVar('chmChapterJs', umdChapterJs)
439. self.thread.setVar('oldChapterTxtDir', umdChapterTxtOld)
440. self.thread.setVar('inputCharset', umdInputCharset)
441. self.thread.setVar('oldChapterTxtExt', umdChapterTxtExt)
442. self.thread.setVar('chapterTxtRegx', umdChapterContentRegx)
443. self.thread.setVar('newChapterTxtDir', umdChapterTxtNew)
444. self.thread.setVar('outputCharset', umdOutputCharset)
445. #print self.thread.data
446. #开始执行
447. self.umd_pushButton_submit.setHidden(True)
448. self.umd_pushButton_close.hide()
449. #显示暂停和停止窗口
450. self.umd_pushButton_pause.show()
451. self.umd_pushButton_Stop.show()
452. #
453. self.thread.buildRegx()
454. self.thread.getChapterList()
455. self.thread.start()
456.
457. ")
458. def on_umd_pushButton_close_clicked(self):
459. self.close()
460. if __name__ == "__main__本文章为转载内容，我们尊重原作者对文章享有的著作权。如有内容错误或侵权问题，欢迎原作者联系我们进行内容更正或删除文章。
