Make inverted appearance work for progressbar in QMacStyle

HITheme doesn't seem to support the reverse thing. I filled a bug about
it, but this is easy to emulate in the horizontal case and the
"Inverted" orientation works great for vertical.

Task-number: 217594
Reviewed-by: Morten Sørvig

1 files changed, 13 insertions, 1 deletions

diff --git a/src/gui/styles/qmacstyle_mac.mm b/src/gui/styles/qmacstyle_mac.mm
index 43efedf..99894ad 100644
--- a/src/gui/styles/qmacstyle_mac.mm
+++ b/src/gui/styles/qmacstyle_mac.mm
@@ -4339,7 +4339,19 @@ void QMacStyle::drawControl(ControlElement ce, const QStyleOption *opt, QPainter
                 tdi.enableState = kThemeTrackDisabled;
             else
                 tdi.enableState = kThemeTrackActive;
-            HIThemeDrawTrack(&tdi, 0, cg, kHIThemeOrientationNormal);
+            HIThemeOrientation drawOrientation = kHIThemeOrientationNormal;
+            if (reverse) {
+                if (vertical) {
+                    drawOrientation = kHIThemeOrientationInverted;
+                } else {
+                    CGContextSaveGState(cg);
+                    CGContextTranslateCTM(cg, pb->rect.width(), 0);
+                    CGContextScaleCTM(cg, -1, 1);
+                }
+            }
+            HIThemeDrawTrack(&tdi, 0, cg, drawOrientation);
+            if (reverse && !vertical)
+                CGContextRestoreGState(cg);
         }
         break;
     case CE_ProgressBarLabel: