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https://github.com/muziing/PySide6-Code-Tutorial.git
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141 lines
6.6 KiB
Python
141 lines
6.6 KiB
Python
import sys
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from PySide6 import QtCore, QtWidgets
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"""
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QPlainTextEdit 编辑操作
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QPlainTextEdit 提供了许多编辑文本相关的槽函数，可以使用这些槽函数完成特定功能
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======================================= 槽函数 ==================================================
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.clear() 清空文本编辑器中的所有文字。注意所有撤销/重做记录也被清空
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.setPlainText(text: str) 清空先前的文本，将编辑器中的文本设置为text。注意所有撤销/重做记录也被清空
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.selectAll() 选中所有文本
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.copy() 将选中的文本复制到剪切板中
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.cut() 将选中的文字复制到剪切板中，并将其从编辑器中删除
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.paste() 将剪切板中的文字粘贴至文本编辑器光标当前所在位置
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.undo() 撤销最后的操作
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.redo() 重做最后的操作
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.insertPlainText(text: str) 在当前光标位置插入纯文本text，等价于.textCursor().insertText(text)
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.appendPlainText(text: str) 将text作为一个新的段落，插入到文本编辑器末尾
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.appendHtml(html: str) 将html作为一个新的段落插入到末尾
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.centerCursor() 滚动文档，以使光标位于竖直居中位置
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======================================= 其他 ==================================================
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.setPlainText(text: str) 将text设置为编辑器中的文本，之前的文本、撤销/重做记录等全部清空
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.toPlainText() -> str 将当前编辑器中的文本作为纯文本返回
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.setUndoRedoEnable(enable: bool) 设置是否允许撤销/重做，默认允许
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.isUndoRedoEnabled() -> bool 获取是否允许撤销/重做
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"""
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class MyWidget(QtWidgets.QWidget):
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.setWindowTitle("QPlainTextEdit-编辑操作")
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self.resize(800, 600)
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self.setup_ui()
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self.pte_slot_test()
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self.test_edit()
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def setup_ui(self) -> None:
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"""设置界面"""
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self.pte = QtWidgets.QPlainTextEdit()
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self.pte.resize(600, 450)
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# 槽函数相关
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self.clear_button = QtWidgets.QPushButton("清空")
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self.select_all_button = QtWidgets.QPushButton("全选")
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self.copy_button = QtWidgets.QPushButton("复制")
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self.cut_buton = QtWidgets.QPushButton("剪切")
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self.paste_button = QtWidgets.QPushButton("粘贴")
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self.undo_button = QtWidgets.QPushButton("撤销")
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self.redo_button = QtWidgets.QPushButton("重做")
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self.insert_line_edit = QtWidgets.QLineEdit()
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self.insert_line_edit.setPlaceholderText("插入纯文本")
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self.append_plain_line_edit = QtWidgets.QLineEdit()
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self.append_plain_line_edit.setPlaceholderText("追加纯文本")
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self.append_html_line_edit = QtWidgets.QLineEdit()
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self.append_html_line_edit.setPlaceholderText("追加HTML")
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self.center_cursor_button = QtWidgets.QPushButton("使光标居中")
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# 其他编辑功能
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self.output_text_button = QtWidgets.QPushButton("输出为纯文本")
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self.set_plain_text_button = QtWidgets.QPushButton("设置纯文本")
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self.undo_redo_enable_checkbox = QtWidgets.QCheckBox("允许撤销/重做")
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self.undo_redo_enable_checkbox.setChecked(True)
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# 将按钮通过布局管理器放在组框中，首次学习可忽略本段代码
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button_groupbox = QtWidgets.QGroupBox("编辑操作")
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layout = QtWidgets.QVBoxLayout(button_groupbox)
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layout.addWidget(self.clear_button)
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layout.addWidget(self.select_all_button)
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layout.addWidget(self.copy_button)
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layout.addWidget(self.cut_buton)
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layout.addWidget(self.paste_button)
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layout.addWidget(self.undo_redo_enable_checkbox)
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layout.addWidget(self.undo_button)
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layout.addWidget(self.redo_button)
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layout.addWidget(self.insert_line_edit)
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layout.addWidget(self.append_plain_line_edit)
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layout.addWidget(self.append_html_line_edit)
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layout.addWidget(self.center_cursor_button)
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layout.addWidget(self.output_text_button)
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layout.addWidget(self.set_plain_text_button)
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button_groupbox.setLayout(layout)
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main_layout = QtWidgets.QHBoxLayout(self)
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main_layout.addWidget(self.pte)
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main_layout.addWidget(button_groupbox)
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self.setLayout(main_layout)
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def pte_slot_test(self) -> None:
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"""测试QPlainTextEdit槽函数"""
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# 将各个按钮的点击信号与纯文本编辑器的槽函数连接
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self.clear_button.clicked.connect(self.pte.clear) # type: ignore
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self.select_all_button.clicked.connect(self.pte.selectAll) # type: ignore
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self.copy_button.clicked.connect(self.pte.copy) # type: ignore
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self.cut_buton.clicked.connect(self.pte.cut) # type: ignore
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self.paste_button.clicked.connect(self.pte.paste) # type: ignore
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self.undo_button.clicked.connect(self.pte.undo) # type: ignore
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self.redo_button.clicked.connect(self.pte.redo) # type: ignore
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self.insert_line_edit.textChanged.connect(self.pte.insertPlainText) # type: ignore
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self.append_plain_line_edit.textChanged.connect(self.pte.appendPlainText) # type: ignore
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self.append_html_line_edit.textChanged.connect(self.pte.appendHtml) # type: ignore
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self.center_cursor_button.clicked.connect(self.pte.centerCursor) # type: ignore
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def test_edit(self) -> None:
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"""测试其他编辑功能"""
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@QtCore.Slot()
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def to_plain_text_test():
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"""测试以纯文本输出功能"""
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print(self.pte.toPlainText())
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@QtCore.Slot(str)
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def set_plain_text_test(text: str):
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"""测试设置纯文本功能"""
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if text:
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self.pte.setPlainText(text)
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else:
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self.pte.setPlainText("https://github.com/muziing/PySide6-Code-Tutorial")
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@QtCore.Slot(bool)
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def undo_redo_enable_test(enable: bool):
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"""测试禁用撤销/重做功能"""
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self.pte.setUndoRedoEnabled(enable)
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print(f"pte.isUndoRedoEnabled({self.pte.isUndoRedoEnabled()})")
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self.output_text_button.clicked.connect(to_plain_text_test) # type: ignore
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self.set_plain_text_button.clicked.connect(set_plain_text_test) # type: ignore
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self.undo_redo_enable_checkbox.toggled.connect(undo_redo_enable_test) # type: ignore
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if __name__ == "__main__":
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app = QtWidgets.QApplication(sys.argv)
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window = MyWidget()
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window.show()
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sys.exit(app.exec())
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