高亮文本

README.md

@@ -14,6 +14,7 @@
 [腾讯视频热播列表](腾讯视频热播列表/)
 
 [ QWebView 与 python 通过js交互 特效 - 已失效 未更新](https://github.com/892768447/PhotoEffects)
+
 ### II、功能型
 
 #### 2.1 常用例子
@@ -40,6 +41,7 @@
     - [ 右下角弹出框](右下角弹出框/)
     - [ 消息对话框倒计时关闭](消息对话框倒计时关闭/)
 
+    - [QTextEdit 文本高亮](文本高亮/)
  - win 32
     - [ 嵌入外部窗口](嵌入外部窗口/)
     - [ 探测窗口和 放大镜](探测窗口和放大截图/) 
@@ -51,6 +53,7 @@
 
     - [ QListView 加按钮和 排序](QListView/)
     - [ Json生成QTreeWidget](Json生成QTreeWidget/)
+    - [ treeWidget 节点可拖拽](https://github.com/AshotS/glowing-disco)
     - [ QSqlTableModel + QTableView 数据库查询显示表格](数据库查询显示表格/)
 
 

文本高亮/README.md

@@ -0,0 +1,4 @@
+# QTextEdit mergeCurrentCharFormat函数
+
+
+![1](ScreenShot/1.gif)

文本高亮/简单查找文字并高亮.py

@@ -0,0 +1,57 @@
+import sys
+from PyQt5.QtGui import QTextCharFormat,QTextDocument, QTextCursor
+from PyQt5.QtWidgets import (QApplication, QMainWindow, QTextEdit,
+        QToolBar, QLineEdit, QPushButton, QColorDialog, QHBoxLayout, QWidget)
+
+class TextEdit(QMainWindow):
+    def __init__(self, parent=None):
+        super(TextEdit, self).__init__(parent)
+        self.textEdit = QTextEdit(self)
+        self.setCentralWidget(self.textEdit)
+        
+        widget = QWidget(self)
+        vb = QHBoxLayout(widget)
+        vb.setContentsMargins(0, 0, 0, 0)
+        self.findText = QLineEdit(self)
+        self.findText.setText('self')
+        findBtn = QPushButton('高亮',self)
+        findBtn.clicked.connect(self.highlight)
+        vb.addWidget(self.findText)
+        vb.addWidget(findBtn)
+        
+        tb = QToolBar(self)
+        tb.addWidget(widget)
+    
+    def setText(self,text):
+        self.textEdit.setPlainText(text)
+    
+    def mergeFormatOnWordOrSelection(self, format):
+        cursor = self.textEdit.textCursor()
+        if not cursor.hasSelection():
+            cursor.select(QTextCursor.WordUnderCursor)
+        cursor.mergeCharFormat(format)
+        self.textEdit.mergeCurrentCharFormat(format)
+    
+    def highlight(self):
+        text = self.findText.text()#输入框中的文字
+        if not text:
+            return
+        col = QColorDialog.getColor(self.textEdit.textColor(), self)
+        if not col.isValid():
+            return
+        fmt = QTextCharFormat()
+        fmt.setForeground(col)
+        #先把光标移动到开头
+        self.textEdit.moveCursor(QTextCursor.Start)
+        while self.textEdit.find(text,QTextDocument.FindWholeWords):#查找所有文字
+            self.mergeFormatOnWordOrSelection(fmt)
+
+if __name__ == '__main__':
+    app = QApplication(sys.argv)
+
+    textEdit = TextEdit()
+    textEdit.resize(800, 600)
+    textEdit.show()
+    textEdit.setText(open(sys.argv[0],'rb').read().decode())
+
+    sys.exit(app.exec_())