调整富文本框底部边框样式 (#252)

qfluentwidgets/_rc/qss/dark/line_edit.qss

@@ -11,7 +11,7 @@ LineEdit, TextEdit, PlainTextEdit {
 }
 
 TextEdit, PlainTextEdit  {
-    padding: 0px 0px 0px 10px;
+    padding: 2px 3px 2px 8px;
 }
 
 LineEdit:hover, TextEdit:hover, PlainTextEdit:hover {

qfluentwidgets/_rc/qss/light/line_edit.qss

@@ -11,7 +11,7 @@ LineEdit, TextEdit, PlainTextEdit {
 
 TextEdit,
 PlainTextEdit {
-    padding: 0px 0px 0px 10px;
+    padding: 2px 3px 2px 8px;
 }
 
 LineEdit:hover, TextEdit:hover, PlainTextEdit:hover {

qfluentwidgets/components/widgets/line_edit.py

@@ -3,7 +3,7 @@ from typing import List, Union
 from PyQt5.QtCore import QSize, Qt, QRectF, pyqtSignal, QPoint, QTimer, QEvent, QAbstractItemModel
 from PyQt5.QtGui import QPainter, QPainterPath, QIcon, QCursor
 from PyQt5.QtWidgets import (QApplication, QAction, QHBoxLayout, QLineEdit, QToolButton, QTextEdit,
-                             QPlainTextEdit, QCompleter, QStyle)
+                             QPlainTextEdit, QCompleter, QStyle, QWidget)
 
 
 from ...common.style_sheet import FluentStyleSheet, themeColor
@@ -287,11 +287,46 @@ class SearchLineEdit(LineEdit):
         self.setTextMargins(0, 0, 28*enable+30, 0)
 
 
+class EditLayer(QWidget):
+    """ Edit layer """
+
+    def __init__(self, parent):
+        super().__init__(parent=parent)
+        self.setAttribute(Qt.WA_TransparentForMouseEvents)
+        parent.installEventFilter(self)
+
+    def eventFilter(self, obj, e):
+        if obj is self.parent() and e.type() == QEvent.Resize:
+            self.resize(e.size())
+
+        return super().eventFilter(obj, e)
+
+    def paintEvent(self, e):
+        if not self.parent().hasFocus():
+            return
+
+        painter = QPainter(self)
+        painter.setRenderHints(QPainter.Antialiasing)
+        painter.setPen(Qt.NoPen)
+
+        m = self.contentsMargins()
+        path = QPainterPath()
+        w, h = self.width()-m.left()-m.right(), self.height()
+        path.addRoundedRect(QRectF(m.left(), h-10, w, 10), 5, 5)
+
+        rectPath = QPainterPath()
+        rectPath.addRect(m.left(), h-10, w, 7.5)
+        path = path.subtracted(rectPath)
+
+        painter.fillPath(path, themeColor())
+
+
 class TextEdit(QTextEdit):
     """ Text edit """
 
     def __init__(self, parent=None):
         super().__init__(parent=parent)
+        self.layer = EditLayer(self)
         self.scrollDelegate = SmoothScrollDelegate(self)
         FluentStyleSheet.LINE_EDIT.apply(self)
         setFont(self)
@@ -306,6 +341,7 @@ class PlainTextEdit(QPlainTextEdit):
 
     def __init__(self, parent=None):
         super().__init__(parent=parent)
+        self.layer = EditLayer(self)
         self.scrollDelegate = SmoothScrollDelegate(self)
         FluentStyleSheet.LINE_EDIT.apply(self)
         setFont(self)