init

ui/implements/components/elidedLabel.py

@@ -0,0 +1,50 @@
+from PySide6.QtCore import Qt
+from PySide6.QtWidgets import QLabel
+
+
+class ElidedLabel(QLabel):
+    """
+    Adapted from https://wiki.qt.io/Elided_Label
+    """
+
+    def __init__(self, parent=None):
+        super().__init__(parent)
+
+        self.__elideMode: Qt.TextElideMode = Qt.TextElideMode.ElideNone
+        self.__cachedElidedText = ""
+        self.__cachedText = ""
+
+    def elideMode(self):
+        return self.__elideMode
+
+    def setElideMode(self, mode):
+        self.__elideMode = mode
+        self.__cachedText = ""
+        self.update()
+
+    def resizeEvent(self, event):
+        super().resizeEvent(event)
+        self.__cachedText = ""
+
+    def paintEvent(self, event) -> None:
+        if self.__elideMode == Qt.TextElideMode.ElideNone:
+            return super().paintEvent(event)
+
+        self.updateCachedTexts()
+        super().setText(self.__cachedElidedText)
+        super().paintEvent(event)
+        super().setText(self.__cachedText)
+
+    def updateCachedTexts(self):
+        text = self.text()
+        if self.__cachedText == text:
+            return
+        self.__cachedText = text
+        fontMetrics = self.fontMetrics()
+        self.__cachedElidedText = fontMetrics.elidedText(
+            self.text(), self.__elideMode, self.width(), Qt.TextFlag.TextShowMnemonic
+        )
+        # make sure to show at least the first character
+        if self.__cachedText:
+            firstChar = f"{self.__cachedText[0]}..."
+            self.setMinimumWidth(fontMetrics.horizontalAdvance(firstChar) + 1)