From fd476c49672300fb28cffc6104e3a51a70dc07a5 Mon Sep 17 00:00:00 2001
From: pax <paxxe@protonmail.com>
Date: Sat, 4 Apr 2026 22:50:16 -0500
Subject: [PATCH] Fix grid selection highlight with custom QSS themes

Extract selection-background-color from QSS and apply it to the
app palette so the grid's custom-painted highlight matches the theme.
---
 booru_viewer/gui/app.py  | 11 ++++++++++-
 booru_viewer/gui/grid.py |  2 ++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/booru_viewer/gui/app.py b/booru_viewer/gui/app.py
index c1dd883..8ca3a0b 100644
--- a/booru_viewer/gui/app.py
+++ b/booru_viewer/gui/app.py
@@ -1639,7 +1639,16 @@ def run() -> None:
         try:
             # Use Fusion style so QSS has full control over rendering
             app.setStyle("Fusion")
-            app.setStyleSheet(custom_css.read_text())
+            css_text = custom_css.read_text()
+            app.setStyleSheet(css_text)
+            # Extract selection color from QSS and apply to palette
+            import re
+            m = re.search(r'selection-background-color\s*:\s*(#[0-9a-fA-F]{3,8})', css_text)
+            if m:
+                from PySide6.QtGui import QPalette, QColor
+                pal = app.palette()
+                pal.setColor(QPalette.ColorRole.Highlight, QColor(m.group(1)))
+                app.setPalette(pal)
         except Exception:
             pass
 
diff --git a/booru_viewer/gui/grid.py b/booru_viewer/gui/grid.py
index 51bd95e..d38b48b 100644
--- a/booru_viewer/gui/grid.py
+++ b/booru_viewer/gui/grid.py
@@ -67,6 +67,8 @@ class ThumbnailWidget(QWidget):
         self.update()
 
     def paintEvent(self, event) -> None:
+        # Ensure QSS is applied so palette picks up custom colors
+        self.ensurePolished()
         p = QPainter(self)
         p.setRenderHint(QPainter.RenderHint.Antialiasing)
         pal = self.palette()