From 69b01f59626fac8f626bb70d87e41b2b37040eff Mon Sep 17 00:00:00 2001
From: un-pogaz <46523284+un-pogaz@users.noreply.github.com>
Date: Fri, 2 Jan 2026 20:31:48 +0100
Subject: [PATCH] Bookshelf: add option to write the texts up to down

---
 src/calibre/gui2/__init__.py                          |  1 +
 src/calibre/gui2/library/bookshelf_view.py            |  5 ++++-
 .../gui2/preferences/look_feel_tabs/bookshelf_view.py |  1 +
 .../gui2/preferences/look_feel_tabs/bookshelf_view.ui | 11 +++++++++--
 4 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/src/calibre/gui2/__init__.py b/src/calibre/gui2/__init__.py
index 3da01ca525..611fca2d28 100644
--- a/src/calibre/gui2/__init__.py
+++ b/src/calibre/gui2/__init__.py
@@ -497,6 +497,7 @@ def create_defs():
     defs['bookshelf_variable_height'] = True
     defs['bookshelf_fade_time'] = 400
     defs['bookshelf_hover'] = 'shift'
+    defs['bookshelf_up_to_down'] = False
 
     # Migrate beta bookshelf_thumbnail
     if isinstance(btv := gprefs.get('bookshelf_thumbnail'), bool):
diff --git a/src/calibre/gui2/library/bookshelf_view.py b/src/calibre/gui2/library/bookshelf_view.py
index 5a58f5c921..8fc59c0474 100644
--- a/src/calibre/gui2/library/bookshelf_view.py
+++ b/src/calibre/gui2/library/bookshelf_view.py
@@ -1726,6 +1726,9 @@ class BookshelfView(MomentumScrollMixin, QAbstractScrollArea):
 
         painter.save()
         rotate()
+        if gprefs['bookshelf_up_to_down']:
+            painter.rotate(180)
+            text_rect.adjust(max(0, line_rect.width() - 6), 0, 0, 0)
         painter.setFont(font)
         painter.drawText(text_rect, Qt.AlignmentFlag.AlignLeft | Qt.AlignmentFlag.AlignVCenter, elided_text)
         painter.restore()
@@ -1798,7 +1801,7 @@ class BookshelfView(MomentumScrollMixin, QAbstractScrollArea):
             return
         painter.save()
         painter.translate(rect.left() + rect.width() // 2, rect.top() + rect.height() // 2)
-        painter.rotate(-90)
+        painter.rotate(90 if gprefs['bookshelf_up_to_down'] else -90)
 
         # Determine text color based on spine background brightness
         text_color = self.get_contrasting_text_color(spine_color)
diff --git a/src/calibre/gui2/preferences/look_feel_tabs/bookshelf_view.py b/src/calibre/gui2/preferences/look_feel_tabs/bookshelf_view.py
index dd6a166516..06c1a81b23 100644
--- a/src/calibre/gui2/preferences/look_feel_tabs/bookshelf_view.py
+++ b/src/calibre/gui2/preferences/look_feel_tabs/bookshelf_view.py
@@ -31,6 +31,7 @@ class BookshelfTab(QTabWidget, LazyConfigWidgetBase, Ui_Form):
         r('bookshelf_shadow', gprefs)
         r('bookshelf_variable_height', gprefs)
         r('bookshelf_fade_time', gprefs)
+        r('bookshelf_up_to_down', gprefs)
 
         r('bookshelf_thumbnail', gprefs, choices=[
             (_('Full'), 'full'),
diff --git a/src/calibre/gui2/preferences/look_feel_tabs/bookshelf_view.ui b/src/calibre/gui2/preferences/look_feel_tabs/bookshelf_view.ui
index 9a0cd57f3e..18065f5287 100644
--- a/src/calibre/gui2/preferences/look_feel_tabs/bookshelf_view.ui
+++ b/src/calibre/gui2/preferences/look_feel_tabs/bookshelf_view.ui
@@ -51,7 +51,7 @@
       </property>
      </widget>
     </item>
-    <item row="1" column="0">
+    <item row="10" column="0">
      <widget class="QLabel" name="label_bookshelf_thumbnail">
       <property name="text">
        <string>Cover &amp;thumbnail on the spines:</string>
@@ -61,7 +61,7 @@
       </property>
      </widget>
     </item>
-    <item row="1" column="1">
+    <item row="10" column="1">
      <widget class="QComboBox" name="opt_bookshelf_thumbnail"/>
     </item>
     <item row="0" column="1">
@@ -78,6 +78,13 @@
       </property>
      </widget>
     </item>
+    <item row="1" column="0">
+     <widget class="QCheckBox" name="opt_bookshelf_up_to_down">
+      <property name="text">
+       <string>&amp;Write the texts up to down</string>
+      </property>
+     </widget>
+    </item>
     <item row="21" column="0">
      <widget class="QLabel" name="label_fade_time">
       <property name="text">