tdf#138314 Change selected tab text color on macOS Big Sur

Starting with macOS Big Sur, coloring has changed. Currently there is
no documentation which system color should be used for selected tab
text. As a workaround text color is changed for macOS Big Sur and
newer only.

Change-Id: I2e8c83527775c17f95e5e4afe70577442e14715e
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/109479
Tested-by: Tor Lillqvist <tml@collabora.com>
Reviewed-by: Tor Lillqvist <tml@collabora.com>
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/109502
Tested-by: Jenkins
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>

1 files changed, 21 insertions, 11 deletions

diff --git a/vcl/osx/salframe.cxx b/vcl/osx/salframe.cxx
index b4168a2142e7..9d4f68827a06 100644
--- a/vcl/osx/salframe.cxx
+++ b/vcl/osx/salframe.cxx
@@ -1302,27 +1302,37 @@ SAL_WNODEPRECATED_DECLARATIONS_POP
     // black otherwise
 
     Color aControlTextColor(getColor([NSColor controlTextColor], COL_BLACK, mpNSWindow));
-    Color aSelectedControlTextColor(getColor([NSColor alternateSelectedControlTextColor], COL_WHITE, mpNSWindow));
-    aStyleSettings.SetDefaultButtonTextColor(aSelectedControlTextColor);
+    Color aSelectedControlTextColor(getColor([NSColor selectedControlTextColor], COL_BLACK, mpNSWindow));
+    Color aAlternateSelectedControlTextColor(getColor([NSColor alternateSelectedControlTextColor], COL_WHITE, mpNSWindow));
+    aStyleSettings.SetDefaultButtonTextColor(aAlternateSelectedControlTextColor);
     aStyleSettings.SetButtonTextColor(aControlTextColor);
-    aStyleSettings.SetDefaultActionButtonTextColor(aSelectedControlTextColor);
+    aStyleSettings.SetDefaultActionButtonTextColor(aAlternateSelectedControlTextColor);
     aStyleSettings.SetActionButtonTextColor(aControlTextColor);
     aStyleSettings.SetFlatButtonTextColor(aControlTextColor);
-    aStyleSettings.SetDefaultButtonRolloverTextColor(aSelectedControlTextColor);
+    aStyleSettings.SetDefaultButtonRolloverTextColor(aAlternateSelectedControlTextColor);
     aStyleSettings.SetButtonRolloverTextColor(aControlTextColor);
-    aStyleSettings.SetDefaultActionButtonRolloverTextColor(aSelectedControlTextColor);
+    aStyleSettings.SetDefaultActionButtonRolloverTextColor(aAlternateSelectedControlTextColor);
     aStyleSettings.SetActionButtonRolloverTextColor(aControlTextColor);
     aStyleSettings.SetFlatButtonRolloverTextColor(aControlTextColor);
-    aStyleSettings.SetDefaultButtonPressedRolloverTextColor(aSelectedControlTextColor);
-    aStyleSettings.SetButtonPressedRolloverTextColor(aSelectedControlTextColor);
-    aStyleSettings.SetDefaultActionButtonPressedRolloverTextColor(aSelectedControlTextColor);
-    aStyleSettings.SetActionButtonPressedRolloverTextColor(aSelectedControlTextColor);
+    aStyleSettings.SetDefaultButtonPressedRolloverTextColor(aAlternateSelectedControlTextColor);
+    aStyleSettings.SetButtonPressedRolloverTextColor(aAlternateSelectedControlTextColor);
+    aStyleSettings.SetDefaultActionButtonPressedRolloverTextColor(aAlternateSelectedControlTextColor);
+    aStyleSettings.SetActionButtonPressedRolloverTextColor(aAlternateSelectedControlTextColor);
     aStyleSettings.SetFlatButtonPressedRolloverTextColor(aControlTextColor);
 
-    // Set text colors for tabs according to OS settings, typically white for selected buttons, black otherwise
+    // Set text colors for tabs according to OS settings
 
     aStyleSettings.SetTabTextColor(aControlTextColor);
-    aStyleSettings.SetTabHighlightTextColor(aSelectedControlTextColor);
+
+    // FIXME: Starting with macOS Big Sur, coloring has changed. Currently there is no documentation which system color should be
+    // used for selected tab text. As a workaround the current OS version has to be considered. This code has to be reviewed once
+    // issue is covered by documentation.
+
+    NSOperatingSystemVersion aOSVersion = { .majorVersion = 11, .minorVersion = 0, .patchVersion = 0 };
+    if ([NSProcessInfo.processInfo isOperatingSystemAtLeastVersion: aOSVersion])
+        aStyleSettings.SetTabHighlightTextColor(aSelectedControlTextColor);
+    else
+        aStyleSettings.SetTabHighlightTextColor(aAlternateSelectedControlTextColor);
 
     aStyleSettings.SetCursorBlinkTime( mnBlinkCursorDelay );