[PATCH v2 1/5] winemac.drv: Enable layer-backed views.

[Chip Davis]

Signed-off-by: Chip Davis 
---
 dlls/winemac.drv/cocoa_window.m | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/dlls/winemac.drv/cocoa_window.m b/dlls/winemac.drv/cocoa_window.m
index d5434b8a966..bc06a9506ee 100644
--- a/dlls/winemac.drv/cocoa_window.m
+++ b/dlls/winemac.drv/cocoa_window.m
@@ -311,6 +311,16 @@ static CVReturn WineDisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTi
 @end

+#ifndef MAC_OS_X_VERSION_10_14
+@protocol NSViewLayerContentScaleDelegate <NSObject>
+@optional
+
+    - (BOOL) layer:(CALayer*)layer shouldInheritContentsScale:(CGFloat)newScale fromWindow:(NSWindow*)window;
+
+@end
+#endif
+
+
 @interface WineBaseView : NSView
 @end

@@ -327,7 +337,7 @@ - (id) initWithFrame:(NSRect)frame device:(id<MTLDevice>)device;
 #endif

-@interface WineContentView : WineBaseView <NSTextInputClient>
+@interface WineContentView : WineBaseView <NSTextInputClient, NSViewLayerContentScaleDelegate>
 {
     NSMutableArray* glContexts;
     NSMutableArray* pendingGlContexts;
@@ -339,6 +349,7 @@ @interface WineContentView : WineBaseView <NSTextInputClient>
     NSMutableAttributedString* markedText;
     NSRange markedTextSelection;

+    BOOL _retinaMode;
     int backingSize[2];

#ifdef HAVE_METAL_METAL_H
@@ -688,9 +699,15 @@ - (void) setRetinaMode:(int)mode
         [self setWantsBestResolutionOpenGLSurface:mode];
         [self updateGLContexts];

+        _retinaMode = !!mode;
         [super setRetinaMode:mode];
     }

+    - (BOOL) layer:(CALayer*)layer shouldInheritContentsScale:(CGFloat)newScale fromWindow:(NSWindow*)window
+    {
+        return (_retinaMode || newScale == 1.0);
+    }
+
     - (void) viewDidHide
     {
         [super viewDidHide];
@@ -1002,6 +1019,7 @@ + (WineWindow*) createWindowWithFeatures:(const struct macdrv_window_features*)w
         contentView = [[[WineContentView alloc] initWithFrame:NSZeroRect] autorelease];
         if (!contentView)
             return nil;
+        [contentView setWantsLayer:YES];
         [contentView setAutoresizesSubviews:NO];

/* We use tracking areas in addition to setAcceptsMouseMovedEvents:YES
@@ -3576,6 +3594,7 @@ macdrv_view macdrv_create_view(CGRect rect)
         NSNotificationCenter* nc = [NSNotificationCenter defaultCenter];

view = [[WineContentView alloc] initWithFrame:NSRectFromCGRect(cgrect_mac_from_win(rect))];
+        [view setWantsLayer:YES];
         [view setAutoresizesSubviews:NO];
         [view setAutoresizingMask:NSViewNotSizable];
         [view setHidden:YES];