pip?install?PyQt5

pip?install?PyPDF2

pip?install?PyMuPDF==1.18.17

#?Importing?all?the?classes?from?the?PyQt5.QtGui?module.
from?PyQt5.QtGui?import?*

#?Importing?all?the?classes?from?the?PyQt5.QtCore?module.
from?PyQt5.QtCore?import?*

#?Importing?all?the?classes?from?the?PyQt5.QtWidgets?module.
from?PyQt5.QtWidgets?import?*

#?Importing?the?`fitz`?module.
import?fitz

#?Importing?the?PyPDF2?module.
import?PyPDF2

#?Importing?the?`sys`?module.
import?sys

#?Importing?the?os?module.
import?os

#?Importing?the?traceback?module.
import?traceback

#?This?class?is?a?widget?that?contains?a?button?and?a?text?box.?When?the?button?is?clicked,?the?text?box?is?populated?with
#?the?path?to?the?converted?file
class?PdfToPngUI(QWidget):
????def?__init__(self):
????????"""
????????A?constructor.?It?is?called?when?an?object?is?created?from?a?class?and?it?allows?the?class?to?initialize?the
????????attributes?of?a?class.
????????"""
????????super(PdfToPngUI,?self).__init__()
????????self.init_ui()

????def?init_ui(self):
????????"""
????????This?function?initializes?the?UI.
????????"""
????????self.setWindowTitle('PDF圖片轉(zhuǎn)換工具?公眾號：Python 集中營')
????????self.setWindowIcon(QIcon('analysis.ico'))
????????self.resize(600,?400)

????????self.source_pdf_path?=?QLineEdit()
????????self.source_pdf_path.setPlaceholderText('PDF文件路徑')
????????self.source_pdf_path.setReadOnly(True)

????????self.source_pdf_btn?=?QPushButton()
????????self.source_pdf_btn.setText('導(dǎo)入')
????????self.source_pdf_btn.clicked.connect(self.source_pdf_btn_click)

????????self.target_png_path?=?QLineEdit()
????????self.target_png_path.setPlaceholderText('目標(biāo)圖片存儲路徑')
????????self.target_png_path.setReadOnly(True)

????????self.target_png_btn?=?QPushButton()
????????self.target_png_btn.setText('路徑')
????????self.target_png_btn.clicked.connect(self.target_png_btn_click)

????????self.start_btn?=?QPushButton()
????????self.start_btn.setText('PDF一鍵生成PNG圖片')
????????self.start_btn.clicked.connect(self.start_btn_click)

????????self.brower?=?QTextBrowser()
????????self.brower.setReadOnly(True)
????????self.brower.setFont(QFont('宋體',?8))
????????self.brower.setPlaceholderText('日志處理過程區(qū)域...')
????????self.brower.ensureCursorVisible()

????????grid?=?QGridLayout()
????????grid.addWidget(self.source_pdf_path,?0,?0,?1,?2)
????????grid.addWidget(self.source_pdf_btn,?0,?2,?1,?1)
????????grid.addWidget(self.target_png_path,?1,?0,?1,?2)
????????grid.addWidget(self.target_png_btn,?1,?2,?1,?1)
????????grid.addWidget(self.start_btn,?2,?0,?1,?3)
????????grid.addWidget(self.brower,?3,?0,?1,?3)

????????self.pdf_thread?=?WorkThread(self)
????????self.pdf_thread.message.connect(self.show_message)
????????self.pdf_thread.finished.connect(self.finished)

????????self.setLayout(grid)

????def?show_message(self,?text):
????????"""
????????It?shows?a?message

????????:param?text:?The?text?to?be?displayed
????????"""
????????cursor?=?self.brower.textCursor()
????????cursor.movePosition(QTextCursor.End)
????????self.brower.append(text)
????????self.brower.setTextCursor(cursor)
????????self.brower.ensureCursorVisible()

????def?source_pdf_btn_click(self):
????????"""
????????It?opens?a?file?dialog?box?to?select?the?source?PDF?file.
????????"""
????????source_pdf_path?=?QFileDialog.getOpenFileName(self,?"選取文件",?os.getcwd(),?"PDF?File?(*.pdf)")
????????self.source_pdf_path.setText(source_pdf_path[0])

????def?target_png_btn_click(self):
????????"""
????????A?function?that?is?called?when?the?target_png_btn?is?clicked.
????????"""
????????target_png_path?=?QFileDialog.getExistingDirectory(self,?'選擇文件夾',?os.getcwd())
????????self.target_png_path.setText(target_png_path)

????def?start_btn_click(self):
????????"""
????????A?function?that?is?called?when?the?start?button?is?clicked.
????????"""
????????self.pdf_thread.start()
????????self.start_btn.setEnabled(False)

????def?finished(self,?finished):
????????"""
????????A?function?that?is?called?when?the?target_png_btn?is?clicked
????????"""
????????if?finished?is?True:
????????????self.start_btn.setEnabled(True)

#?It's?a?QThread?that?runs?a?function?in?a?separate?thread
class?WorkThread(QThread):
????message?=?pyqtSignal(str)
????finished?=?pyqtSignal(bool)

????def?__init__(self,?parent=None):
????????"""
????????A?constructor?that?initializes?the?class.

????????:param?parent:?The?parent?widget
????????"""
????????super(WorkThread,?self).__init__(parent)
????????self.working?=?True
????????self.parent?=?parent

????def?__del__(self):
????????"""
????????A?destructor.?It?is?called?when?the?object?is?destroyed.
????????"""
????????self.working?=?False

????def?run(self):
????????"""
??????? PDF轉(zhuǎn)換圖片的業(yè)務(wù)函數(shù)。
????????"""
????????try:
????????????source_pdf_path?=?self.parent.source_pdf_path.text().strip()
????????????target_png_path?=?self.parent.target_png_path.text().strip()
????????????if?source_pdf_path?==?''?or?target_png_path?==?'':
????????????????self.message.emit('來源文件路徑或目標(biāo)存儲路徑不能為空！')
????????????????self.finished.emit(True)
????????????????return

????????????self.message.emit('源文件路徑：{}'.format(source_pdf_path))
????????????self.message.emit('目標(biāo)文件路徑：{}'.format(target_png_path))

????????????pdf_?=?fitz.open(source_pdf_path)
????????????self.message.emit('成功打開PDF文件對象！')
????????????reader?=?PyPDF2.PdfFileReader(source_pdf_path)
????????????self.message.emit('PDF文件流處理完成！')
????????????page_num?=?reader.getNumPages()
????????????self.message.emit('PDF文件頁數(shù)讀取完成！')

????????????for?n?in?range(0,?page_num):
????????????????page?=?pdf_.load_page(n)
????????????????pix_?=?page.get_pixmap()
????????????????pix_.save(os.path.join(target_png_path,?str(n)?+?'.png'))
????????????????self.message.emit('圖片保存成功：{}'.format(os.path.join(target_png_path,?str(n)?+?'.png')))
????????????self.message.emit('PNG圖片全部轉(zhuǎn)換完成！')
????????????self.finished.emit(True)
????????except:
????????????traceback.print_exc()
????????????self.message.emit('程序運(yùn)行出現(xiàn)錯(cuò)誤，請檢查參數(shù)是否設(shè)置正確！')
????????????self.finished.emit(True)

if?__name__?==?'__main__':
????app?=?QApplication(sys.argv)
????main?=?PdfToPngUI()
????main.show()
????sys.exit(app.exec_())