I have a subclassed NSWindow which uses the undocumented CGSSetWindowBackgroundBlurRadius method to blur a transparent background.
This is working fine however I also want to blur the title bar. In order to do this I can OR a NSFullSizeContentViewWindowMask mask to the existing style. This successfully changes the title bar to a transparent view but the blur effect is lost! Any ideas of how I can go about this?
#import "TransparentNSWindow.h"
#implementation TransparentNSWindow
typedef void * CGSConnection;
extern OSStatus CGSSetWindowBackgroundBlurRadius(CGSConnection connection, NSInteger windowNumber, int radius);
extern CGSConnection CGSDefaultConnectionForThread();
- (void)enableBlurForWindow:(NSWindow *)window
{
[window setOpaque:NO];
window.backgroundColor = [NSColor colorWithCalibratedRed:255./255. green:255./255. blue:255./255. alpha:0.4];
CGSConnection connection = CGSDefaultConnectionForThread();
CGSSetWindowBackgroundBlurRadius(connection, [window windowNumber], 20);
}
- (id)initWithContentRect:(NSRect)contentRect styleMask:(NSUInteger)aStyle backing:(NSBackingStoreType)bufferingType defer:(BOOL)flag {
NSUInteger currentStyle = [self styleMask];
NSUInteger style = NSTitledWindowMask|NSClosableWindowMask|NSMiniaturizableWindowMask|NSResizableWindowMask;
self = [super initWithContentRect:contentRect styleMask :style backing :NSBackingStoreBuffered defer:NO ];
if (self)
{
[self setOpaque:NO];
[self setHasShadow:NO];
self.titlebarAppearsTransparent = true;
self.titleVisibility = true;
// Uncommenting this line results in a transparent title bar but no blur
//self.styleMask |= NSFullSizeContentViewWindowMask;
[self enableBlurForWindow:self];
}
return self;
}
#end
Got in touch with Apple and apparently there is no way that this can be done.
Related
So I have a borderless window with it's background color set to clear. Inside it, I have an NSView with some custom drawing. It looks like this:
https://www.dropbox.com/s/16dh9ez3z04eic7/Screenshot%202016-02-10%2012.15.35.png?dl=0
The problem is, the custom drawing is casting a shadow, which you can see if the view is hidden:
https://www.dropbox.com/s/04ymp0b2yqi5egu/Screenshot%202016-02-10%2012.19.04.png?dl=0
I only want the shadow around the frame of the window! How can I achieve this?
NOTE: strangely enough, giving the window a title bar provides the behavior I want: https://www.dropbox.com/s/1vv9iwb5403tufe/Screenshot%202016-02-10%2012.25.29.png?dl=0 - Unfortunately, I don't want a title bar.
The code:
#implementation MyWindow
/*
In Interface Builder, the class for the window is set to this subclass. Overriding the initializer
provides a mechanism for controlling how objects of this class are created.
*/
- (id)initWithContentRect:(NSRect)contentRect
styleMask:(NSUInteger)aStyle
backing:(NSBackingStoreType)bufferingType
defer:(BOOL)flag {
self = [super initWithContentRect:contentRect styleMask:NSBorderlessWindowMask backing:bufferingType defer:NO];
if (self != nil) {
[self setOpaque:NO];
[self setBackgroundColor:[NSColor clearColor]];
[self makeKeyAndOrderFront:NSApp];
[self setMovable:YES];
[self setShowsResizeIndicator:YES];
[self setResizeIncrements:NSMakeSize(2, 2)];
[self setLevel:TOP_LEVEL];
}
return self;
}
/*
Custom windows that use the NSBorderlessWindowMask can't become key by default. Override this method
so that controls in this window will be enabled.
*/
- (BOOL)canBecomeKeyWindow {
return YES;
}
#end
And the ContentView:
#implementation WindowContentView
- (id)initWithFrame:(NSRect)frame {
self = [super initWithFrame:frame];
if (self) {
// Initialization code here.
}
return self;
}
- (void)drawRect:(NSRect)dirtyRect {
// we need to redraw the whole frame
dirtyRect = self.bounds;
// background
NSBezierPath *framePath = [NSBezierPath bezierPathWithRoundedRect:dirtyRect xRadius:0.0f yRadius:0.0f];
[[NSColor colorWithCalibratedRed:0.0f/255.0f green:255.0f/255.0f blue:153.0f/255.0f alpha:0.3f] setFill];
[framePath fill];
// border
[[NSColor colorWithCalibratedRed:0.0f/255.0f green:255.0f/255.0f blue:153.0f/255.0f alpha:1.0f] setStroke];
framePath.lineWidth = 1.0f;
[framePath stroke];
// grid
[self drawGridInRect:dirtyRect];
[super drawRect:dirtyRect];
}
- (void)drawGridInRect:(NSRect)rect {
int rows = 5;
int columns = 5;
float gridWidth = CGRectGetWidth(rect)/columns;
float gridHeight = CGRectGetHeight(rect)/rows;
[[NSColor colorWithCalibratedRed:0.0f/255.0f green:255.0f/255.0f blue:153.0f/255.0f alpha:0.2f] setStroke];
[NSBezierPath setDefaultLineWidth:1.0f];
for(int i=1; i<rows; i++) {
[NSBezierPath strokeLineFromPoint:NSMakePoint(gridWidth*i, CGRectGetMaxY(rect))
toPoint:NSMakePoint(gridWidth*i, CGRectGetMinY(rect))];
}
for(int i=1; i<columns; i++) {
[NSBezierPath strokeLineFromPoint:NSMakePoint(CGRectGetMaxX(rect), gridHeight*i)
toPoint:NSMakePoint(CGRectGetMinX(rect), gridHeight*i)];
}
}
#end
So I now have my Auto Layout-based container working, for the most part. On 10.8 (I need to run on 10.7 and newer), I see this:
Notice how the sides of the NSProgressIndicator and NSPopUpButton are clipped.
After some experimentation, I found that overriding alignmentRectInsets and returning 50 pixels of insets on all sides shows no clipping:
In both cases, the controls are bound to the left and right edges of the container view alignment rect with H:|[view]|. I imagine this will happen on other versions of OS X too, but it's most noticeable here (and as of writing I only have access to 10.8 and 10.10 installs).
Now, using alignment rect insets of 50 pixels on each side sounds wrong. I don't think there'd be any control that would need more than 50 pixels, but I'd rather do these correctly. So my question is: How do I implement the alignmentRectForFrame: and frameForAlignmentRect: selectors to properly account for the frames and alignment rects of the subviews?
Right now, I'm thinking to force a layout and then observe the frames and alignment rects of each subview, assuming that alignment rect (0, 0) of my last subview (the subviews are arranged linearly) will be at alignment rect (0, 0) of the container view. But I'm not sure if this approach is sufficient to handle all cases, and I'm not sure if I can invert the operation in the same way that these two selectors require. Subtraction, maybe?
If what I described above is the solution, could I do that with alignmentRectInsets, or must the insets returned by that method never change during the lifetime of the view?
Or is the second screenshot showing a scenario that Interface Builder won't reproduce, and thus I assume is "wrong" from a guidelines standpoint?
In the sample program below, start without a command-line argument to simulate the first screenshot, and start with an argument to simulate the second screenshot. Check the Spaced checkbox to add spacing to the views.
Thanks!
// 17 august 2015
#import <Cocoa/Cocoa.h>
BOOL useInsets = NO;
#interface ContainerView : NSView
#end
#implementation ContainerView
- (NSEdgeInsets)alignmentRectInsets
{
if (useInsets)
return NSEdgeInsetsMake(50, 50, 50, 50);
return [super alignmentRectInsets];
}
#end
NSWindow *mainwin;
NSView *containerView;
NSProgressIndicator *progressbar;
NSPopUpButton *popupbutton;
NSButton *checkbox;
void addConstraints(NSView *view, NSString *constraint, NSDictionary *views)
{
NSArray *constraints = [NSLayoutConstraint constraintsWithVisualFormat:constraint
options:0
metrics:nil
views:views];
[view addConstraints:constraints];
}
void relayout(BOOL spaced)
{
[containerView removeConstraints:[containerView constraints]];
NSDictionary *views = #{
#"pbar": progressbar,
#"pbutton": popupbutton,
#"checkbox": checkbox,
};
NSString *vconstraint = #"V:|[pbar][pbutton][checkbox]|";
if (spaced)
vconstraint = #"V:|[pbar]-[pbutton]-[checkbox]|";
addConstraints(containerView, vconstraint, views);
addConstraints(containerView, #"H:|[pbar]|", views);
addConstraints(containerView, #"H:|[pbutton]|", views);
addConstraints(containerView, #"H:|[checkbox]|", views);
NSView *contentView = [mainwin contentView];
[contentView removeConstraints:[contentView constraints]];
NSString *base = #":|[view]|";
if (spaced)
base = #":|-[view]-|";
views = #{
#"view": containerView,
};
addConstraints(contentView, [#"H" stringByAppendingString:base], views);
addConstraints(contentView, [#"V" stringByAppendingString:base], views);
}
#interface appDelegate : NSObject<NSApplicationDelegate>
#end
#implementation appDelegate
- (IBAction)onChecked:(id)sender
{
relayout([checkbox state] == NSOnState);
}
- (void)applicationDidFinishLaunching:(NSNotification *)note
{
mainwin = [[NSWindow alloc]
initWithContentRect:NSMakeRect(0, 0, 320, 240)
styleMask:(NSTitledWindowMask | NSClosableWindowMask | NSMiniaturizableWindowMask | NSResizableWindowMask)
backing:NSBackingStoreBuffered
defer:YES];
NSView *contentView = [mainwin contentView];
containerView = [[ContainerView alloc] initWithFrame:NSZeroRect];
[containerView setTranslatesAutoresizingMaskIntoConstraints:NO];
progressbar = [[NSProgressIndicator alloc] initWithFrame:NSZeroRect];
[progressbar setControlSize:NSRegularControlSize];
[progressbar setBezeled:YES];
[progressbar setStyle:NSProgressIndicatorBarStyle];
[progressbar setIndeterminate:NO];
[progressbar setTranslatesAutoresizingMaskIntoConstraints:NO];
[containerView addSubview:progressbar];
popupbutton = [[NSPopUpButton alloc] initWithFrame:NSZeroRect];
[popupbutton setPreferredEdge:NSMinYEdge];
NSPopUpButtonCell *pbcell = (NSPopUpButtonCell *) [popupbutton cell];
[pbcell setArrowPosition:NSPopUpArrowAtBottom];
[popupbutton addItemWithTitle:#"Item 1"];
[popupbutton addItemWithTitle:#"Item 2"];
[popupbutton setTranslatesAutoresizingMaskIntoConstraints:NO];
[containerView addSubview:popupbutton];
checkbox = [[NSButton alloc] initWithFrame:NSZeroRect];
[checkbox setTitle:#"Spaced"];
[checkbox setButtonType:NSSwitchButton];
[checkbox setBordered:NO];
[checkbox setFont:[NSFont systemFontOfSize:[NSFont systemFontSizeForControlSize:NSRegularControlSize]]];
[checkbox setTarget:self];
[checkbox setAction:#selector(onChecked:)];
[checkbox setTranslatesAutoresizingMaskIntoConstraints:NO];
[containerView addSubview:checkbox];
[contentView addSubview:containerView];
relayout(NO);
[mainwin cascadeTopLeftFromPoint:NSMakePoint(20, 20)];
[mainwin makeKeyAndOrderFront:mainwin];
}
- (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)app
{
return YES;
}
#end
int main(int argc, char *argv[])
{
useInsets = (argc > 1);
NSApplication *app = [NSApplication sharedApplication];
[app setActivationPolicy:NSApplicationActivationPolicyRegular];
[app setDelegate:[appDelegate new]];
[app run];
return 0;
}
I am using an NSToolbar and NSWindowController to change the views of an NSWindow. When the toolbar items are selected, the view is successfully changed for the window and the window changes it's size according to the view size. Upon the initial loading of the window, the contents of the view appear as expected. However, once a toolbar item is selected the contents of the new view are not visible and when the view is switched back to the original view, it's contents are no longer visible either. Not sure what is causing this so any help would be appreciated.
#import <Cocoa/Cocoa.h>
#interface WindowController : NSWindowController {
IBOutlet NSView *firstView;
IBOutlet NSView *secondView;
int currentViewTag;
}
- (IBAction)switchView:(id)sender;
#end
and
#import "WindowController.h"
#interface WindowController ()
#end
#implementation WindowController
- (id)init {
self = [super initWithWindowNibName:#"WindowController"];
if (self) {
}
return self;
}
- (void)windowDidLoad {
[super windowDidLoad];
}
- (NSRect)newFrameForNewContentView:(NSView*)view {
NSWindow *window = [self window];
NSRect newFrameRect = [window frameRectForContentRect:[view frame]];
NSRect oldFrameRect = [window frame];
NSSize newSize = newFrameRect.size;
NSSize oldSize = oldFrameRect.size;
NSRect frame = [window frame];
frame.size = newSize;
frame.origin.y -= (newSize.height - oldSize.height);
return frame;
}
- (NSView *)viewForTag:(int)tag {
NSView *view = nil;
switch (tag) {
case 0:
view = firstView;
break;
case 1:
view = secondView;
break;
}
return view;
}
- (BOOL)validateToolbarItem:(NSToolbarItem *)item {
if ([item tag] == currentViewTag) return NO;
else return YES;
}
- (void)awakeFromNib {
[[self window] setContentSize:[firstView frame].size];
[[[self window] contentView] addSubview:firstView];
[[[self window] contentView] setWantsLayer:YES];
}
- (IBAction)switchView:(id)sender {
double tag = [sender tag];
NSView *view = [self viewForTag:tag];
NSView *previousView = [self viewForTag:currentViewTag];
currentViewTag = tag;
NSRect newFrame = [self newFrameForNewContentView:view];
[NSAnimationContext beginGrouping];
if ([[NSApp currentEvent] modifierFlags] & NSShiftKeyMask)
[[NSAnimationContext currentContext] setDuration:1.0];
[[[[self window] contentView] animator] replaceSubview:previousView with:view];
[[[self window] animator] setFrame:newFrame display:YES];
[NSAnimationContext endGrouping];
}
#end
I tried out your code, and what I saw was not that the views disappeared, but that they were positioned wrongly and moved out of view. I fixed this by turning off auto layout in IB, and deselecting all the struts and springs in the size inspector. I also deselected the window's "restorable" property so that if you closed the program with view 2 visible, and reopened, the window (with view 1 inside) would be the correct size for view 1.
I am confused about why this code does not display any image:
In the app delegate:
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
NSRect rect = window.frame;
rect.origin.x = 0;
rect.origin.y = 0;
BlueImageView *blueImageView = [[BlueImageView alloc]initWithFrame:rect];
window.contentView = blueImageView; // also tried [window.contentView addSubview: blueImageView];
}
BlueImageView.h:
#interface BlueImageView : NSImageView {
}
#end
BlueImageView.m:
#implementation BlueImageView
- (id)initWithFrame:(NSRect)frame {
self = [super initWithFrame:frame];
if (self) {
[self setImage: [NSImage imageNamed:#"imagefile.png"]];
NSAssert(self.image, #"");
NSLog (#"Initialized");
}
return self;
}
- (void)drawRect:(NSRect)dirtyRect {
}
#end
The file imagefile.png exists. The NSAssert is not causing an exception. The NSLog is firing. But no image shows up in the window.
The drawRect: method is called to draw the view, and your implementation immediately returns. To get NSImageView to draw the image for you, call [super drawRect:dirtyRect]; in your implementation of drawRect:. If you aren't going to do any other drawing in drawRect:, just remove the method to speed up drawing.
I'm trying to make a Card class that duplicates the behavior of Dashboard widgets in that you can put controls or images or whatever on two sides of the card and flip between them.
Layer backed views have a transform property, but altering that doesn't do what I would expect it to do (rotating the layer around the y axis folds it off to the left side).
I was pointed to some undocumented features and an .h file named cgsprivate.h, but I'm wondering if there is an official way to do this? This software would have to be shipped and I'd hate to see it fail later because the Apple guys pull it in 10.6.
Anyone have any idea how to do this? It's so weird to me that a simple widget thing would be so hard to do in Core Animation.
Thanks in advance!
EDIT: I can accomplish this behavior with images that are on layers, but I don't know how to get more advanced controls/views/whatever on the layers. The card example uses images.
Mike Lee has an implementation of the flip effect for which he has released some sample code. (Unfortunately, this is no longer available online, but Drew McCormack built off of that in his own implementation.) It appears that he grabs the layers for the "background" and "foreground" views to be swapped, uses a CATransform3D to rotate the two views in the animation, and then swaps the views once the animation has completed.
By using the layers from the views, you avoid needing to cache into a bitmap, since that's what the layers are doing anyways. In any case, his view controller looks to be a good drop-in solution for what you want.
Using Core Animation like e.James outlined...Note, this is using garbage collection and a hosted layer:
#import "AnimationWindows.h"
#interface AnimationFlipWindow (PrivateMethods)
NSRect RectToScreen(NSRect aRect, NSView *aView);
NSRect RectFromScreen(NSRect aRect, NSView *aView);
NSRect RectFromViewToView(NSRect aRect, NSView *fromView, NSView *toView);
#end
#pragma mark -
#implementation AnimationFlipWindow
#synthesize flipForward = _flipForward;
- (id) init {
if ( self = [super init] ) {
_flipForward = YES;
}
return self;
}
- (void) finalize {
// Hint to GC for cleanup
[[NSGarbageCollector defaultCollector] collectIfNeeded];
[super finalize];
}
- (void) flip:(NSWindow *)activeWindow
toBack:(NSWindow *)targetWindow {
CGFloat duration = 1.0f * (activeWindow.currentEvent.modifierFlags & NSShiftKeyMask ? 10.0 : 1.0);
CGFloat zDistance = 1500.0f;
NSView *activeView = [activeWindow.contentView superview];
NSView *targetView = [targetWindow.contentView superview];
// Create an animation window
CGFloat maxWidth = MAX(NSWidth(activeWindow.frame), NSWidth(targetWindow.frame)) + 500;
CGFloat maxHeight = MAX(NSHeight(activeWindow.frame), NSHeight(targetWindow.frame)) + 500;
CGRect animationFrame = CGRectMake(NSMidX(activeWindow.frame) - (maxWidth / 2),
NSMidY(activeWindow.frame) - (maxHeight / 2),
maxWidth,
maxHeight);
mAnimationWindow = [NSWindow initForAnimation:NSRectFromCGRect(animationFrame)];
// Add a touch of perspective
CATransform3D transform = CATransform3DIdentity;
transform.m34 = -1.0 / zDistance;
[mAnimationWindow.contentView layer].sublayerTransform = transform;
// Relocate target window near active window
CGRect targetFrame = CGRectMake(NSMidX(activeWindow.frame) - (NSWidth(targetWindow.frame) / 2 ),
NSMaxY(activeWindow.frame) - NSHeight(targetWindow.frame),
NSWidth(targetWindow.frame),
NSHeight(targetWindow.frame));
[targetWindow setFrame:NSRectFromCGRect(targetFrame) display:NO];
mTargetWindow = targetWindow;
// New Active/Target Layers
[CATransaction begin];
CALayer *activeWindowLayer = [activeView layerFromWindow];
CALayer *targetWindowLayer = [targetView layerFromWindow];
[CATransaction commit];
activeWindowLayer.frame = NSRectToCGRect(RectFromViewToView(activeView.frame, activeView, [mAnimationWindow contentView]));
targetWindowLayer.frame = NSRectToCGRect(RectFromViewToView(targetView.frame, targetView, [mAnimationWindow contentView]));
[CATransaction begin];
[[mAnimationWindow.contentView layer] addSublayer:activeWindowLayer];
[CATransaction commit];
[mAnimationWindow orderFront:nil];
[CATransaction begin];
[[mAnimationWindow.contentView layer] addSublayer:targetWindowLayer];
[CATransaction commit];
// Animate our new layers
[CATransaction begin];
CAAnimation *activeAnim = [CAAnimation animationWithDuration:(duration * 0.5) flip:YES forward:_flipForward];
CAAnimation *targetAnim = [CAAnimation animationWithDuration:(duration * 0.5) flip:NO forward:_flipForward];
[CATransaction commit];
targetAnim.delegate = self;
[activeWindow orderOut:nil];
[CATransaction begin];
[activeWindowLayer addAnimation:activeAnim forKey:#"flip"];
[targetWindowLayer addAnimation:targetAnim forKey:#"flip"];
[CATransaction commit];
}
- (void) animationDidStop:(CAAnimation *)animation finished:(BOOL)flag {
if (flag) {
[mTargetWindow makeKeyAndOrderFront:nil];
[mAnimationWindow orderOut:nil];
mTargetWindow = nil;
mAnimationWindow = nil;
}
}
#pragma mark PrivateMethods:
NSRect RectToScreen(NSRect aRect, NSView *aView) {
aRect = [aView convertRect:aRect toView:nil];
aRect.origin = [aView.window convertBaseToScreen:aRect.origin];
return aRect;
}
NSRect RectFromScreen(NSRect aRect, NSView *aView) {
aRect.origin = [aView.window convertScreenToBase:aRect.origin];
aRect = [aView convertRect:aRect fromView:nil];
return aRect;
}
NSRect RectFromViewToView(NSRect aRect, NSView *fromView, NSView *toView) {
aRect = RectToScreen(aRect, fromView);
aRect = RectFromScreen(aRect, toView);
return aRect;
}
#end
#pragma mark -
#pragma mark CategoryMethods:
#implementation CAAnimation (AnimationFlipWindow)
+ (CAAnimation *) animationWithDuration:(CGFloat)time flip:(BOOL)bFlip forward:(BOOL)forwardFlip{
CABasicAnimation *flipAnimation = [CABasicAnimation animationWithKeyPath:#"transform.rotation.y"];
CGFloat startValue, endValue;
if ( forwardFlip ) {
startValue = bFlip ? 0.0f : -M_PI;
endValue = bFlip ? M_PI : 0.0f;
} else {
startValue = bFlip ? 0.0f : M_PI;
endValue = bFlip ? -M_PI : 0.0f;
}
flipAnimation.fromValue = [NSNumber numberWithDouble:startValue];
flipAnimation.toValue = [NSNumber numberWithDouble:endValue];
CABasicAnimation *shrinkAnimation = [CABasicAnimation animationWithKeyPath:#"transform.scale"];
shrinkAnimation.toValue = [NSNumber numberWithFloat:1.3f];
shrinkAnimation.duration = time * 0.5;
shrinkAnimation.autoreverses = YES;
CAAnimationGroup *animationGroup = [CAAnimationGroup animation];
animationGroup.animations = [NSArray arrayWithObjects:flipAnimation, shrinkAnimation, nil];
animationGroup.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
animationGroup.duration = time;
animationGroup.fillMode = kCAFillModeForwards;
animationGroup.removedOnCompletion = NO;
return animationGroup;
}
#end
#pragma mark -
#implementation NSWindow (AnimationFlipWindow)
+ (NSWindow *) initForAnimation:(NSRect)aFrame {
NSWindow *window = [[NSWindow alloc] initWithContentRect:aFrame
styleMask:NSBorderlessWindowMask
backing:NSBackingStoreBuffered
defer:NO];
[window setOpaque:NO];
[window setHasShadow:NO];
[window setBackgroundColor:[NSColor clearColor]];
[window.contentView setWantsLayer:YES];
return window;
}
#end
#pragma mark -
#implementation NSView (AnimationFlipWindow)
- (CALayer *) layerFromWindow {
NSBitmapImageRep *image = [self bitmapImageRepForCachingDisplayInRect:self.bounds];
[self cacheDisplayInRect:self.bounds toBitmapImageRep:image];
CALayer *layer = [CALayer layer];
layer.contents = (id)image.CGImage;
layer.doubleSided = NO;
// Shadow settings based upon Mac OS X 10.6
[layer setShadowOpacity:0.5f];
[layer setShadowOffset:CGSizeMake(0,-10)];
[layer setShadowRadius:15.0f];
return layer;
}
#end
The header file:
#interface AnimationFlipWindow : NSObject {
BOOL _flipForward;
NSWindow *mAnimationWindow;
NSWindow *mTargetWindow;
}
// Direction of flip animation (property)
#property (readwrite, getter=isFlipForward) BOOL flipForward;
- (void) flip:(NSWindow *)activeWindow
toBack:(NSWindow *)targetWindow;
#end
#pragma mark -
#pragma mark CategoryMethods:
#interface CAAnimation (AnimationFlipWindow)
+ (CAAnimation *) animationWithDuration:(CGFloat)time
flip:(BOOL)bFlip // Flip for each side
forward:(BOOL)forwardFlip; // Direction of flip
#end
#interface NSWindow (AnimationFlipWindow)
+ (NSWindow *) initForAnimation:(NSRect)aFrame;
#end
#interface NSView (AnimationFlipWindow)
- (CALayer *) layerFromWindow;
#end
EDIT: This will animate to flip from one window to another window. You can apply the same principals to a view.
It's overkill for your purposes (as it contains a largely-complete board and card game reference app), but check out this sample from ADC. The card games included with it do that flip effect quite nicely.
If you are able to do this with images, perhaps you can keep all of your controls in an NSView object (as usual), and then render the NSView into a bitmap image using cacheDisplayInRect:toBitmapImageRep: just prior to executing the flip effect. The steps would be:
Render the NSView to a bitmap
Display that bitmap in a layer suitable for the flip effect
Hide the NSView and expose the image layer
Perform the flip effect
I know this is late but Apple has an example project here that may be of help to anyone still stumbling upon this question.
https://developer.apple.com/library/mac/#samplecode/ImageTransition/Introduction/Intro.html#//apple_ref/doc/uid/DTS40010277
There's a complete open source implementation of this by the guys at Mizage.
You can check it out here: https://github.com/mizage/Flip-Animation
Probably not the case in 2008 when this question was asked, but this is pretty easy these days:
[UIView animateWithDuration:0.5 animations:^{
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:self.iconView cache:YES];
/* changes to the view made here will be reflected on the flipped to side */
}];
Note: Apparently, this only works on iOS.