[vlc-commits] macosx/tracking view: add API to animate transitions

[Felix Paul Kühne]

vlc | branch: master | Felix Paul Kühne <felix at feepk.net> | Sun Nov  3 19:12:50 2019 +0100| [096145ee1df4fc5ce40ba95daf73efc683678cab] | committer: Felix Paul Kühne

macosx/tracking view: add API to animate transitions

> http://git.videolan.org/gitweb.cgi/vlc.git/?a=commit;h=096145ee1df4fc5ce40ba95daf73efc683678cab
---

 modules/gui/macosx/views/VLCTrackingView.h |  1 +
 modules/gui/macosx/views/VLCTrackingView.m | 25 +++++++++++++++++++++++--
 2 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/modules/gui/macosx/views/VLCTrackingView.h b/modules/gui/macosx/views/VLCTrackingView.h
index 2c4a6976ed..c115a7f17c 100644
--- a/modules/gui/macosx/views/VLCTrackingView.h
+++ b/modules/gui/macosx/views/VLCTrackingView.h
@@ -26,6 +26,7 @@ NS_ASSUME_NONNULL_BEGIN
 
 @interface VLCTrackingView : NSView
 
+ at property (readwrite) BOOL animatesTransition;
 @property (readwrite, assign, nullable) NSView *viewToHide;
 
 @end
diff --git a/modules/gui/macosx/views/VLCTrackingView.m b/modules/gui/macosx/views/VLCTrackingView.m
index 01fb4cf7f1..bc07fa830b 100644
--- a/modules/gui/macosx/views/VLCTrackingView.m
+++ b/modules/gui/macosx/views/VLCTrackingView.m
@@ -32,12 +32,33 @@
 
 - (void)mouseExited:(NSEvent *)event
 {
-    self.viewToHide.hidden = YES;
+    if (self.animatesTransition) {
+        [self.viewToHide setAlphaValue:1.0];
+        __weak typeof(self.viewToHide) weakViewToHide = self.viewToHide;
+        [NSAnimationContext runAnimationGroup:^(NSAnimationContext *context){
+            [[NSAnimationContext currentContext] setDuration:0.9];
+            [[weakViewToHide animator] setAlphaValue:0.0];
+        } completionHandler:^{
+            [weakViewToHide setHidden:YES];
+        }];
+    } else {
+        self.viewToHide.hidden = YES;
+    }
 }
 
 - (void)mouseEntered:(NSEvent *)event
 {
-    self.viewToHide.hidden = NO;
+    if (self.animatesTransition) {
+        [self.viewToHide setAlphaValue:.0];
+        [self.viewToHide setHidden:NO];
+        __weak typeof(self.viewToHide) weakViewToHide = self.viewToHide;
+        [NSAnimationContext runAnimationGroup:^(NSAnimationContext *context){
+            [[NSAnimationContext currentContext] setDuration:0.9];
+            [[weakViewToHide animator] setAlphaValue:1.0];
+        } completionHandler:nil];
+    } else {
+        self.viewToHide.hidden = NO;
+    }
 }
 
 - (void)updateTrackingAreas