From b4b18b4fc5dc52063d5d078d64a8547c65ef3c29 Mon Sep 17 00:00:00 2001
From: Talley Lambert <talley.lambert@gmail.com>
Date: Fri, 14 Jun 2024 22:10:22 -0400
Subject: [PATCH] feat: graceful offline fallback for qiconify
---
src/superqt/iconify/__init__.py | 30 ++++++++++++++++++++++++++----
1 file changed, 26 insertions(+), 4 deletions(-)
diff --git a/src/superqt/iconify/__init__.py b/src/superqt/iconify/__init__.py
index 7549cfe5..67f86dc8 100644
--- a/src/superqt/iconify/__init__.py
+++ b/src/superqt/iconify/__init__.py
@@ -1,9 +1,11 @@
from __future__ import annotations
+import warnings
from typing import TYPE_CHECKING
-from qtpy.QtCore import QSize
-from qtpy.QtGui import QIcon
+from qtpy.QtCore import QSize, Qt
+from qtpy.QtGui import QIcon, QPainter, QPixmap
+from qtpy.QtWidgets import QApplication
if TYPE_CHECKING:
from typing import Literal
@@ -122,5 +124,25 @@ def addKey(
state : QIcon.State, optional
State specified for the icon, passed to `QIcon.addFile`.
"""
- path = svg_path(*key, color=color, flip=flip, rotate=rotate, dir=dir)
- self.addFile(str(path), size or QSize(), mode, state)
+ try:
+ path = svg_path(*key, color=color, flip=flip, rotate=rotate, dir=dir)
+ except OSError:
+ warnings.warn(
+ f"Unable to connect to internet, and icon {key} not cached.",
+ stacklevel=2,
+ )
+ self._draw_text_fallback(key)
+ else:
+ self.addFile(str(path), size or QSize(), mode, state)
+
+ def _draw_text_fallback(self, key: tuple[str, ...]) -> None:
+ if style := QApplication.style():
+ pixmap = style.standardPixmap(style.StandardPixmap.SP_MessageBoxQuestion)
+ else:
+ pixmap = QPixmap(18, 18)
+ pixmap.fill(Qt.GlobalColor.transparent)
+ painter = QPainter(pixmap)
+ painter.drawText(pixmap.rect(), Qt.AlignmentFlag.AlignCenter, "?")
+ painter.end()
+
+ self.addPixmap(pixmap)