From f32bad6d3d687e2131aaa076fa371c2a778c38bf Mon Sep 17 00:00:00 2001
From: Robin Moser <mail@robinmoser.de>
Date: Thu, 2 Jul 2026 14:50:12 +0200
Subject: [PATCH] Add decimal-hours toggle (shortcut + header button)

---
 tests/test_client_dt.py   | 17 +++++++++++++++--
 timetagger/app/dialogs.py |  1 +
 timetagger/app/dt.py      | 18 ++++++++++++++++++
 timetagger/app/front.py   | 30 ++++++++++++++++++++++++++++++
 4 files changed, 64 insertions(+), 2 deletions(-)

diff --git a/tests/test_client_dt.py b/tests/test_client_dt.py
index 922c8aee..9598410d 100644
--- a/tests/test_client_dt.py
+++ b/tests/test_client_dt.py
@@ -97,8 +97,9 @@ def test_time2str():
 
 
 def test_duration_string():
-    js = py2js(open(dt.__file__, "rb").read().decode(), docstrings=False)
-    js += "\n\nwindow = {};"
+    js = "window = {};\n" + py2js(
+        open(dt.__file__, "rb").read().decode(), docstrings=False
+    )
 
     js1 = evaljs(js, f"duration_string(5, false)")
     js2 = evaljs(js, f"duration_string(5, true)")
@@ -132,6 +133,18 @@ def test_duration_string():
     assert js5 == "2:01"
     assert js6 == "2:01:05"
 
+    # Toggle decimal mode: durations render as decimal hours
+    js += "toggle_duration_decimal_mode();"
+    js1 = evaljs(js, f"duration_string(7265, false)")
+    js2 = evaljs(js, f"duration_string(7265, true)")
+    js3 = evaljs(js, f"duration_string(-7265, false)")
+    assert js1 == "2.02"
+    assert js2 == "2.02"
+    assert js3 == "-2.02"
+    js += "toggle_duration_decimal_mode();"
+    js4 = evaljs(js, f"duration_string(7265, false)")
+    assert js4 == "2h01m"
+
 
 if __name__ == "__main__":
     run_tests(globals())
diff --git a/timetagger/app/dialogs.py b/timetagger/app/dialogs.py
index 2528a37f..f5f3061f 100644
--- a/timetagger/app/dialogs.py
+++ b/timetagger/app/dialogs.py
@@ -3944,6 +3944,7 @@ def open(self, callback=None):
             "F": "Open search dialog",
             "T": "Select time range",
             "R": "Open report dialog",
+            ".": "Toggle decimal hours",
             "I": "Open the guide",
             "Backspace": "Unselect all tags",
         }
diff --git a/timetagger/app/dt.py b/timetagger/app/dt.py
index eb561365..60d48e56 100644
--- a/timetagger/app/dt.py
+++ b/timetagger/app/dt.py
@@ -304,8 +304,26 @@ def duration_string_colon(t, show_secs=False):
         return f"{sign}{m // 60:.0f}:{m % 60:02.0f}"
 
 
+def toggle_duration_decimal_mode():
+    PSCRIPT_OVERLOAD = False  # noqa
+    window.duration_decimal_mode = not window.duration_decimal_mode
+    return window.duration_decimal_mode
+
+
+def duration_string_decimal(t, show_secs=False):
+    PSCRIPT_OVERLOAD = False  # noqa
+    sign = "-" if t < 0 else ""
+    t = abs(t)
+    text = f"{sign}{t / 3600:0.2f}"
+    if show_secs == 2:
+        return (text, "")
+    return text
+
+
 def duration_string(t, show_secs=False, repr=None):
     PSCRIPT_OVERLOAD = False  # noqa
+    if window.duration_decimal_mode:
+        return duration_string_decimal(t, show_secs)
     if not repr:
         repr = "hms"
         if window.simplesettings:
diff --git a/timetagger/app/front.py b/timetagger/app/front.py
index c7b2e61c..d564c237 100644
--- a/timetagger/app/front.py
+++ b/timetagger/app/front.py
@@ -1128,6 +1128,30 @@ def on_draw(self, ctx, menu_only=False):
         )
         x += margin
 
+        x += self._draw_button(
+            ctx,
+            x,
+            y3,
+            None,
+            h,
+            ["fas-\uf1ec"],
+            "duration_decimal",
+            (
+                "Show decimal hours [.]"
+                if not window.duration_decimal_mode
+                else "Show normal duration [.]"
+            ),
+            {
+                "ref": "topleft",
+                "color": (
+                    COLORS.button_text
+                    if not window.duration_decimal_mode
+                    else COLORS.acc_clr
+                ),
+            },
+        )
+        x += margin
+
         x += self._draw_button(
             ctx,
             x,
@@ -1547,6 +1571,8 @@ def _on_key(self, e):
             self._handle_button_press("record_stopall")
         elif e.key.lower() == "r":
             self._handle_button_press("report")
+        elif e.key == ".":
+            self._handle_button_press("duration_decimal")
         elif e.key.lower() == "i":
             self._handle_button_press("guide")
         else:
@@ -1589,6 +1615,10 @@ def _handle_button_press(self, action):
         elif action == "guide":
             self._canvas.guide_dialog.open()
 
+        elif action == "duration_decimal":
+            dt.toggle_duration_decimal_mode()
+            self.update()
+
         elif action == "pomo":
             self._canvas.pomodoro_dialog.open()