I'm wondering what's the best practice to resize a window when Toolbar changes.
I'm trying to get this effect (animated) when a Toolbar selected option changes.
Any ideas?
Thank you for your help! :)
Here's my commonly used method:
After clicking the new toolbar item, firstly get the frame size of the new subview to be added, then change window's frame with animation.
Demo (just change height, but you can add support to change width):
- (void)switchToTabView:(NSView *)settingView withAnimation:(BOOL)animation
{
NSView *windowView = self.window.contentView;
for (NSView *view in windowView.subviews) {
[view removeFromSuperview];
}
CGFloat oldHeight = windowView.frame.size.height;
[windowView addSubview:settingView];
CGFloat newHeight = settingView.frame.size.height;
CGFloat delta = newHeight - oldHeight;
NSPoint origin = settingView.frame.origin;
origin.y -= delta;
[settingView setFrameOrigin:origin];
NSRect frame = self.window.frame;
frame.size.height += delta;
frame.origin.y -= delta;
[self.window setFrame:frame display:YES animate:animation];
}
#GoKu Your answer gave me a hint how to solve it. I just added a new property for my window called "win".
Here's my solution:
- (void)updateView:(int)tag{
[[_ourViewController view] removeFromSuperview];
if (tag==0) {
self.ourViewController = [[UserView alloc] initWithNibName:#"UserView" bundle:nil];
} else if (tag==1){
self.ourViewController = [[ComputerView alloc] initWithNibName:#"ComputerView" bundle:nil];
}
NSView *newView = _ourViewController.view;
NSRect windowRect = _win.frame;
NSRect currentViewRect = newView.frame;
windowRect.origin.y = windowRect.origin.y + (windowRect.size.height - currentViewRect.size.height);
windowRect.size.height = currentViewRect.size.height;
windowRect.size.width = currentViewRect.size.width;
[self.win setContentView:newView];
[self.win setFrame:windowRect display:YES animate:YES];
}
Thanx!
I have a custom PDFView subclass and have overridden -mouseDown, -mouseDragged etc to draw a rectangle over the view. Here is the code I am using:
#implementation MyPDFView {
NSPoint clickLocation;
NSRect selection;
}
- (void)mouseDown:(NSEvent *)theEvent {
NSPoint clickLocationOnWindow = [self.window mouseLocationOutsideOfEventStream];
clickLocation = [self convertPoint:clickLocationOnWindow fromView:nil];
NSLog(#"%#", NSStringFromPoint(clickLocation));
}
- (void)mouseDragged:(NSEvent *)theEvent {
NSPoint mouseLocationOnWindow = [self.window mouseLocationOutsideOfEventStream];
NSPoint currentLocation = [self convertPoint:mouseLocationOnWindow fromView:nil];
CGFloat lowerX = fmin(clickLocation.x, currentLocation.x);
CGFloat lowerY = fmin(clickLocation.y, currentLocation.y);
CGFloat upperX = fmax(clickLocation.x, currentLocation.x);
CGFloat upperY = fmax(clickLocation.y, currentLocation.y);
selection = NSMakeRect(lowerX, lowerY, upperX-lowerX, upperY-lowerY);
[self setNeedsDisplay:YES];
NSLog(#"%#", NSStringFromRect(selection));
}
- (void)drawRect:(NSRect)dirtyRect
{
// Drawing code here.
NSLog(#"drawRect");
NSBezierPath *bp = [NSBezierPath bezierPathWithRect:selection];
[[NSColor blueColor] set];
[bp fill];
}
#end
The NSRect is calculated correctly, but when I call [self setNeedsDisplay], -drawRect is never called, and the rectangle is never drawn.
Is there any reason why -drawRect is never called on a PDFView subclass?
I have a similar use case. According to the docs, override PDFView's drawPage method instead. Continue to call setNeedsDisplay on the PDFView. It works, but it's a little slow. Working on overlaying a view right now instead.
Here is my code snippet for cocoa application using core animation, somehow the animation doesn't show.
CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:#"position"];
[animation setDelegate:self];
NSRect pos = [imageView frame];
[animation setFromValue:[NSValue valueWithRect:pos]];
NSPoint point = NSMakePoint(pos.origin.x-40, pos.origin.y);
[animation setToValue:[NSValue valueWithPoint:point]];
[animation setDuration:2.0];
[[imageView animator] addAnimation:animation forKey:#"myTest"];
while this is the working code:
NSRect position = [imageView frame];
position.origin.x -= 40;
[[imageView animator] setFrame:position];
But autoReverse doesn't work.
Anything wrong with the first one? And how to make the reverse movement work in the 2nd one? Thanks!
I don't know for sure, but for the first one, position is a CGPoint, so you might try using that type for your fromValue and toValue. You're currently using an NSRect and an NSPoint (the latter of which should work, but not sure about the former).
For the second, how are you specifying auto-reverse? +setAnimationRepeatAutoreverses needs to be called from inside an animation block (after "beginAnimations")
(Note: I'm not very experienced with Cocoa since I'm chiefly an iOS developer; I haven't tested any of the following stuff)
I think the problem is that you're trying to mix CoreAnimation and Animator Proxy. You don't add the animation to the Animator, but to the layer:
[[imageView layer] addAnimation:animation forKey:#"myTest"];
Another possibility might be to use NSViewAnimation and chain them together. See the Animation Programming Guide for Cocoa, page 13. So you'd have one animation to go in one direction, and once it's finished it triggers the second one that goes back. It seems to work like this:
NSMutableDictionary *firstDict = [NSMutableDictionary dictionary];
[firstDict setObject:imageView forKey:NSViewAnimationTargetKey];
[firstDict setObject:[NSValue valueWithRect:originalFrame] forKey:NSViewAnimationStartFrameKey];
[firstDict setObject:[NSValue valueWithRect:targetFrame] forKey:NSViewAnimationEndFrameKey];
NSMutableDictionary *secondDict = [NSMutableDictionary dictionary];
[secondDict setObject:imageView forKey:NSViewAnimationTargetKey];
[secondDict setObject:[NSValue valueWithRect:targetFrame] forKey:NSViewAnimationStartFrameKey];
[secondDict setObject:[NSValue valueWithRect:originalFrame] forKey:NSViewAnimationEndFrameKey];
NSViewAnimation *firstAnimation = [[NSViewAnimation alloc] initWithViewAnimations:[NSArray arrayWithObject:firstDict]];
[firstAnimation setDuration:2.0];
NSViewAnimation *secondAnimation = [[NSViewAnimation alloc] initWithViewAnimations:[NSArray arrayWithObject:secondDict]];
[secondAnimation setDuration:2.0];
[secondAnimation startWhenAnimation:firstAnimation reachesProgress:1.0];
[firstAnimation startAnimation];
Then, in Lion (OS X 10.7) you can set a completion handler when using Animator Proxy. It should work like this:
[NSAnimationContext beginGrouping];
[[NSAnimationContext currentContext] setDuration:2.0];
[[NSAnimationContext currentContext] setCompletionHandler:^(void) {
// Here comes your code for the reverse animation.
[NSAnimationContext beginGrouping];
[[NSAnimationContext currentContext] setDuration:2.0];
[[aView animator] setFrameOrigin:originalPosition];
[NSAnimationContext endGrouping];
}];
[[aView animator] setFrameOrigin:position];
[NSAnimationContext endGrouping];
I'm writting a Cocoa app. I've wrote a code that can Drag&Drop one Image. But now I need to draw several Images by double click and D&D them. Each double click- new image, each click on existing image- starts D&D. Problem is in realization. I can't imagine a simple way of realization. Can anybody propose a solution?
Thanks.
#import "DotView.h"
#implementation DotView
- (id)initWithFrame:(NSRect)frame
{
self = [super initWithFrame:frame];
if (self)
{
center.x = center.y = 100.0;
}
return self;
}
- (void)drawRect:(NSRect)rect {
NSRect bounds = [self bounds];
[[NSColor whiteColor] set];
NSRectFill(bounds);
[[NSGraphicsContext currentContext]
setImageInterpolation: NSImageInterpolationHigh];
NSSize viewSize = [self bounds].size;
NSSize imageSize = { 50, 40 };
NSPoint imageOrigin = center;
imageOrigin.x -= imageSize.width * 0.50;
imageOrigin.y -= imageSize.height * 0.50;
NSRect destRect;
destRect.origin = imageOrigin;
destRect.size = imageSize;
NSString * file = #"/Users/classuser/Desktop/ded.jpg";
NSImage * image = [[NSImage alloc] initWithContentsOfFile:file];
[image setFlipped:NO];
[image drawInRect: destRect
fromRect: NSZeroRect
operation: NSCompositeSourceOver
fraction: 1.0];
NSBezierPath * path = [NSBezierPath bezierPathWithRect:destRect];
}
-(void)mouseDown:(NSEvent*)event
{
NSPoint point = [event locationInWindow];
if(center.x<point.x+25 && center.x>point.x-25)
if(center.y<point.y+20 && center.y>point.y-20)
center = [self convertPoint:point fromView:nil];
}
- (void) mouseDragged:(NSEvent*)event {
[self mouseDown:event];
[self setNeedsDisplay:YES];
}
#end
Read:
Cocoa Drawing Guide
and
View Programming Guide for Cocoa
and
Drag and Drop Programming Topics for Cocoa
Once you've read these, ask more targeted questions - this is a bit too broad to answer simply.
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.