From ca05b2e10de4be6f06aa06945a7f4344d97ac93e Mon Sep 17 00:00:00 2001
From: dev <dev@local>
Date: Thu, 26 Feb 2026 12:03:40 +0000
Subject: [PATCH] feat(ui_builders_shared): implement def
 icon_from_svg_data_url

---
 scanslicer/ui_builders_shared.py | 36 ++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/scanslicer/ui_builders_shared.py b/scanslicer/ui_builders_shared.py
index 0295035..4fab19c 100644
--- a/scanslicer/ui_builders_shared.py
+++ b/scanslicer/ui_builders_shared.py
@@ -35,3 +35,39 @@ def _icon_color_from_palette(palette):
         + (0.0722 * window_color.blueF())
     )
     return "#1f1f1f" if luma >= 0.5 else "#f2f2f2"
+
+
+# icon_from_svg_data_url: function definition for ScanSlicer behavior.
+def icon_from_svg_data_url(data_url, size=24, color_hex=None, palette=None):
+    prefix = "data:image/svg+xml;base64,"
+    if not data_url.startswith(prefix):
+        return None
+
+    try:
+        svg_bytes = base64.b64decode(data_url[len(prefix):], validate=True)
+    except Exception:
+        return None
+
+    if color_hex is None:
+        color_hex = _icon_color_from_palette(palette)
+
+    # Most toolbar SVGs use "currentColor"; replace it with the resolved color.
+    if color_hex:
+        try:
+            svg_text = svg_bytes.decode("utf-8")
+            svg_text = svg_text.replace("currentColor", color_hex)
+            svg_text = svg_text.replace("currentcolor", color_hex)
+            svg_bytes = svg_text.encode("utf-8")
+        except UnicodeDecodeError:
+            pass
+
+    renderer = QSvgRenderer(svg_bytes)
+    if not renderer.isValid():
+        return None
+
+    pixmap = QPixmap(size, size)
+    pixmap.fill(Qt.GlobalColor.transparent)
+    painter = QPainter(pixmap)
+    renderer.render(painter)
+    painter.end()
+    return QIcon(pixmap)