diff options
Diffstat (limited to 'src/plugins/styles')
-rw-r--r-- | src/plugins/styles/mac/qmacstyle_mac.mm | 36 |
1 files changed, 31 insertions, 5 deletions
diff --git a/src/plugins/styles/mac/qmacstyle_mac.mm b/src/plugins/styles/mac/qmacstyle_mac.mm index 45da5fbd84..3405f01046 100644 --- a/src/plugins/styles/mac/qmacstyle_mac.mm +++ b/src/plugins/styles/mac/qmacstyle_mac.mm @@ -1880,20 +1880,46 @@ NSCell *QMacStylePrivate::cocoaCell(CocoaControl widget) const return cell; } -void QMacStylePrivate::drawNSViewInRect(NSView *view, const QRectF &qtRect, QPainter *p, +void QMacStylePrivate::drawNSViewInRect(NSView *view, const QRectF &rect, QPainter *p, __attribute__((noescape)) DrawRectBlock drawRectBlock) const { QMacCGContext ctx(p); setupNSGraphicsContext(ctx, YES); - const CGRect rect = qtRect.toCGRect(); + // FIXME: The rect that we get in is relative to the widget that we're drawing + // style on behalf of, and doesn't take into account the offset of that widget + // to the widget that owns the backingstore, which we are placing the native + // view into below. This means most of the views are placed in the upper left + // corner of backingStoreNSView, which does not map to where the actual widget + // is, and which may cause problems such as triggering a setNeedsDisplay of the + // backingStoreNSView for the wrong rect. We work around this by making the view + // layer-backed, which prevents triggering display of the backingStoreNSView, but + // but there may be other issues lurking here due to the wrong position. QTBUG-68023 + view.wantsLayer = YES; + + // FIXME: We are also setting the frame of the incoming view a lot at the call + // sites of this function, making it unclear who's actually responsible for + // maintaining the size and position of the view. In theory the call sites + // should ensure the _size_ of the view is correct, and then let this code + // take care of _positioning_ the view at the right place inside backingStoreNSView. + // For now we pass on the rect as is, to prevent any regressions until this + // can be investigated properly. + view.frame = rect.toCGRect(); [backingStoreNSView addSubview:view]; - view.frame = rect; + + // FIXME: Based on the code below, this method isn't drawing an NSView into + // a rect, it's drawing _part of the NSView_, defined by the incoming clip + // or dirty rect, into the current graphics context. We're doing some manual + // translations at the call sites that would indicate that this relationship + // is a bit fuzzy. + const CGRect dirtyRect = rect.toCGRect(); + if (drawRectBlock) - drawRectBlock(ctx, rect); + drawRectBlock(ctx, dirtyRect); else - [view drawRect:rect]; + [view drawRect:dirtyRect]; + [view removeFromSuperviewWithoutNeedingDisplay]; restoreNSGraphicsContext(ctx); |