parent
a707902a0e
commit
2c247c90c1
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from PyQt5.QtGui import *
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from PyQt5.QtWidgets import *
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from PyQt5.QtCore import *
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from PyQt5.Qt import *
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import os
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import sys
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FONT_SIZES = [7, 8, 9, 10, 11, 12, 13, 14, 18, 24, 36, 48, 64, 72, 96, 144, 288]
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HTML_EXTENSIONS = [".htm", ".html"]
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# 文件路径分割成文件名和扩展名两部分
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def splitext(p):
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return os.path.splitext(p)[1].lower()
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class MainWindow(QMainWindow):
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def __init__(self, *args, **kwargs):
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super(MainWindow, self).__init__(*args, **kwargs)
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layout = QVBoxLayout()
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self.editor = QTextEdit()
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self.setWindowIcon(QIcon("D:/python_study/python课程设计/Typora/icon/img.png"))
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self.editor.setAutoFormatting(QTextEdit.AutoAll)
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self.editor.selectionChanged.connect(self.update_format)
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font = QFont("Times", 12)
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self.editor.setFont(font)
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self.editor.setFontPointSize(12)
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self.path = None
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layout.addWidget(self.editor)
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container = QWidget()
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container.setLayout(layout)
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self.setCentralWidget(container)
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文件工具栏 = QToolBar("文件")
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文件工具栏.setIconSize(QSize(20, 20))
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self.addToolBar(文件工具栏)
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文件菜单 = self.menuBar().addMenu("&文件")
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打开_action = QAction(
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QIcon("D:/python_study/python课程设计/Typora/icon/打开文件.png"),
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"打开文件",
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self,
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)
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打开_action.triggered.connect(self.file_open)
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文件菜单.addAction(打开_action)
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文件工具栏.addAction(打开_action)
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保存_action = QAction(
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QIcon(os.path.join("Typora/icon", "保存文件.png")), "保存", self
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)
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保存_action.triggered.connect(self.file_save)
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文件菜单.addAction(保存_action)
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文件工具栏.addAction(保存_action)
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另存为_action = QAction(
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QIcon(os.path.join("Typora/icon", "另存为.png")), "另存为", self
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)
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另存为_action.triggered.connect(self.file_saveas)
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文件菜单.addAction(另存为_action)
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文件工具栏.addAction(另存为_action)
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编辑工具栏 = QToolBar("编辑")
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编辑工具栏.setIconSize(QSize(20, 20))
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self.addToolBar(编辑工具栏)
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编辑菜单 = self.menuBar().addMenu("&编辑")
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撤回_action = QAction(
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QIcon(os.path.join("Typora/icon", "撤回.png")), "撤回", self
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)
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撤回_action.triggered.connect(self.editor.undo)
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编辑菜单.addAction(撤回_action)
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重做_action = QAction(
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QIcon(os.path.join("Typora/icon", "重做.png")), "重做", self
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)
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重做_action.triggered.connect(self.editor.redo)
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编辑工具栏.addAction(重做_action)
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编辑菜单.addAction(重做_action)
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编辑菜单.addSeparator()
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剪切_action = QAction(
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QIcon(os.path.join("Typora/icon", "剪切.png")), "剪切", self
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)
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剪切_action.setShortcut(QKeySequence.Cut)
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剪切_action.triggered.connect(self.editor.cut)
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编辑工具栏.addAction(剪切_action)
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编辑菜单.addAction(剪切_action)
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复制_action = QAction(
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QIcon(os.path.join("Typora/icon", "复制.png")), "复制", self
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)
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剪切_action.setShortcut(QKeySequence.Copy)
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复制_action.triggered.connect(self.editor.copy)
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编辑工具栏.addAction(复制_action)
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编辑菜单.addAction(复制_action)
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粘贴_action = QAction(
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QIcon(os.path.join("Typora/icon", "粘贴.png")),
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"粘帖",
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self,
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)
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剪切_action.setShortcut(QKeySequence.Paste)
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粘贴_action.triggered.connect(self.editor.paste)
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编辑工具栏.addAction(粘贴_action)
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编辑菜单.addAction(粘贴_action)
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全选_action = QAction(
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QIcon(os.path.join("Typora/icon", "selection-input.png")), "全选", self
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)
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剪切_action.setShortcut(QKeySequence.SelectAll)
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全选_action.triggered.connect(self.editor.selectAll)
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编辑菜单.addAction(全选_action)
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编辑菜单.addSeparator()
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换行 = QAction(
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QIcon(os.path.join("Typora/icon", "arrow-continue.png")), "自动换行", self
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)
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换行.setCheckable(True)
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换行.setChecked(True)
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换行.triggered.connect(self.edit_toggle_wrap)
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编辑菜单.addAction(换行)
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格式工具栏 = QToolBar("格式")
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格式工具栏.setIconSize(QSize(20, 20))
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self.addToolBar(格式工具栏)
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格式菜单 = self.menuBar().addMenu("&格式")
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self.字体 = QFontComboBox()
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self.字体.currentFontChanged.connect(self.editor.setCurrentFont)
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格式工具栏.addWidget(self.字体)
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self.字体大小 = QComboBox()
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self.字体大小.addItems([str(s) for s in FONT_SIZES])
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self.字体大小.currentIndexChanged[str].connect(
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lambda s: self.editor.setFontPointSize(float(s))
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)
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格式工具栏.addWidget(self.字体大小)
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self.加粗 = QAction(
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QIcon(os.path.join("Typora/icon", "字体加粗.png")), "加粗", self
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)
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self.加粗.setShortcut(QKeySequence.Bold)
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self.加粗.setCheckable(True)
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self.加粗.toggled.connect(
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lambda x: self.editor.setFontWeight(QFont.Bold if x else QFont.Normal)
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)
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格式工具栏.addAction(self.加粗)
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格式菜单.addAction(self.加粗)
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self.斜体 = QAction(
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QIcon(os.path.join("Typora/icon", "字体斜体.png")), "斜体", self
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)
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self.斜体.setShortcut(QKeySequence.Italic)
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self.斜体.setCheckable(True)
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self.斜体.toggled.connect(self.editor.setFontItalic)
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格式工具栏.addAction(self.斜体)
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格式菜单.addAction(self.斜体)
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self.下划线 = QAction(
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QIcon(os.path.join("Typora/icon", "字体下划线.png")), "下划线", self
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)
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self.下划线.setShortcut(QKeySequence.Underline)
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self.下划线.setCheckable(True)
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self.下划线.toggled.connect(self.editor.setFontUnderline)
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格式工具栏.addAction(self.下划线)
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格式菜单.addAction(self.下划线)
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格式菜单.addSeparator()
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self.左对齐_action = QAction(
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QIcon(os.path.join("Typora/icon", "左对齐.png")), "靠左对齐", self
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)
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self.左对齐_action.setCheckable(True)
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self.左对齐_action.triggered.connect(
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lambda: self.editor.setAlignment(Qt.AlignLeft)
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)
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格式工具栏.addAction(self.左对齐_action)
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格式菜单.addAction(self.左对齐_action)
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self.居中_action = QAction(
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QIcon(os.path.join("Typora/icon", "居中对齐.png")), "居中对齐", self
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)
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self.居中_action.setCheckable(True)
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self.居中_action.triggered.connect(
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lambda: self.editor.setAlignment(Qt.AlignCenter)
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)
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格式工具栏.addAction(self.居中_action)
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格式菜单.addAction(self.居中_action)
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self.右对齐_action = QAction(
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QIcon(os.path.join("Typora/icon", "右对齐.png")), "靠右对齐", self
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)
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self.右对齐_action.setCheckable(True)
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self.右对齐_action.triggered.connect(
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lambda: self.editor.setAlignment(Qt.AlignRight)
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)
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格式工具栏.addAction(self.右对齐_action)
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格式菜单.addAction(self.右对齐_action)
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self.左右对齐_action = QAction(
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QIcon(os.path.join("Typora/icon", "左右对齐.png")), "左右对齐", self
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)
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self.左右对齐_action.setCheckable(True)
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self.左右对齐_action.triggered.connect(
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lambda: self.editor.setAlignment(Qt.AlignJustify)
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)
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格式工具栏.addAction(self.左右对齐_action)
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格式菜单.addAction(self.左右对齐_action)
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# 单选框
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对齐_group = QActionGroup(self)
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对齐_group.setExclusive(True)
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对齐_group.addAction(self.左对齐_action)
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对齐_group.addAction(self.居中_action)
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对齐_group.addAction(self.右对齐_action)
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对齐_group.addAction(self.左右对齐_action)
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格式菜单.addSeparator()
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self._format_actions = [
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self.字体,
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self.字体大小,
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self.加粗,
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self.斜体,
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self.下划线,
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]
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self.update_format()
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self.update_title()
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self.show()
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def block_signals(self, objects, b):
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for o in objects:
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o.blockSignals(b)
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def update_format(self):
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# 设置信号阻塞
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self.block_signals(self._format_actions, True)
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self.字体.setCurrentFont(self.editor.currentFont())
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self.字体大小.setCurrentText(str(int(self.editor.fontPointSize())))
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self.斜体.setChecked(self.editor.fontItalic())
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self.下划线.setChecked(self.editor.fontUnderline())
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self.加粗.setChecked(self.editor.fontWeight() == QFont.Bold)
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self.左对齐_action.setChecked(self.editor.alignment() == Qt.AlignLeft)
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self.居中_action.setChecked(self.editor.alignment() == Qt.AlignCenter)
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self.右对齐_action.setChecked(self.editor.alignment() == Qt.AlignRight)
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self.左右对齐_action.setChecked(self.editor.alignment() == Qt.AlignJustify)
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self.block_signals(self._format_actions, False)
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def dialog_critical(self, s):
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dlg = QMessageBox(self)
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dlg.setText(s)
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dlg.setIcon(QMessageBox.Critical)
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dlg.show()
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def file_open(self):
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path, _ = QFileDialog.getOpenFileName(
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self,
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"打开文件",
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"",
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"HTML documents (*.html);Text documents (*.txt);All files (*.*)",
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)
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try:
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with open(path, "r+") as f:
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text = f.read()
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except Exception as e:
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self.dialog_critical(str(e))
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else:
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self.path = path
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self.editor.setText(text)
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self.update_title()
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def file_save(self):
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if self.path is None:
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return self.file_saveas()
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text = (
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self.editor.toHtml()
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if splitext(self.path) in HTML_EXTENSIONS
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else self.editor.toPlainText()
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)
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try:
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with open(self.path, "w") as f:
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f.write(text)
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except Exception as e:
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self.dialog_critical(str(e))
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def file_saveas(self):
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path, _ = QFileDialog.getSaveFileName(
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self,
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"保存文件",
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"",
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"HTML documents (*.html);Text documents (*.txt);All files (*.*)",
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)
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if not path:
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return
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text = (
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self.editor.toHtml()
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if splitext(path) in HTML_EXTENSIONS
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else self.editor.toPlainText() # 获取文本
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)
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try:
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with open(path, "w") as f:
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f.write(text)
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except Exception as e:
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self.dialog_critical(str(e))
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else:
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self.path = path
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self.update_title()
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def update_title(self):
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self.setWindowTitle(
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"%s - 文本编辑器"
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% (os.path.basename(self.path) if self.path else "Untitled")
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)
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def edit_toggle_wrap(self):
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self.editor.setLineWrapMode(1 if self.editor.lineWrapMode() == 0 else 0)
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if __name__ == "__main__":
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app = QApplication(sys.argv)
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app.setApplicationName("文本编辑器")
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window = MainWindow()
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window.resize(1300, 750)
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app.exec_()
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