I am appending some text on my NSTextView on the screen and so I want user to be able to scroll in the view to see the entire log. But I am not able to have my text view scrolling. Below is my code. Any idea whats wrong here.
NSView *superview = [window contentView];
NSRect scrollViewFrame = NSMakeRect(10, self.window.frame.size.height / 2 - 200, 400, 400);
NSScrollView *scrollview = [[NSScrollView alloc]
initWithFrame:scrollViewFrame];
NSSize contentSize = [scrollview contentSize];
[scrollview setBorderType:NSLineBorder];
[scrollview setHasVerticalScroller:YES];
[scrollview setHasHorizontalScroller:NO];
[scrollview setAutoresizingMask:NSViewWidthSizable|NSViewHeightSizable];
NSRect textViewFrame = NSMakeRect(0, 0, contentSize.width, contentSize.height);
self.logTextView = [[NSTextView alloc] initWithFrame:textViewFrame];
[self.logTextView setMinSize:NSMakeSize(0.0, contentSize.height)];
[self.logTextView setMaxSize:NSMakeSize(FLT_MAX, FLT_MAX)];
[self.logTextView setVerticallyResizable:YES];
[self.logTextView setHorizontallyResizable:NO];
[self.logTextView setAutoresizingMask:NSViewWidthSizable];
[scrollview addSubview:self.logTextView];
[superview addSubview:scrollview];
This is fixed. I forgot to set the document view for my scrollview.
[scrollview setDocumentView:self.logTextView];
Related
I'm working at a custom Window object that is displayed as child in a parent Window.
For this object I'd like to create an animation like that of an NSPopover.
My first idea is to create a Screenshot of the child Window, than animate it using Core Animation and finally showing the real Window.
Before begging the implementation I would like to know if exists a better method and what you think about my solution.
It's not trivial. Here's how I do it:
#interface ZoomWindow : NSWindow
{
CGFloat animationTimeMultiplier;
}
#property (nonatomic, readwrite, assign) CGFloat animationTimeMultiplier;
#end
#implementation ZoomWindow
#synthesize animationTimeMultiplier;
- (NSTimeInterval)animationResizeTime: (NSRect)newWindowFrame
{
float multiplier = animationTimeMultiplier;
if (([[NSApp currentEvent] modifierFlags] & NSShiftKeyMask) != 0) {
multiplier *= 10;
}
return [super animationResizeTime: newWindowFrame] * multiplier;
}
#end
#implementation NSWindow (PecuniaAdditions)
- (ZoomWindow*)createZoomWindowWithRect: (NSRect)rect
{
// Code mostly from http://www.noodlesoft.com/blog/2007/06/30/animation-in-the-time-of-tiger-part-1/
// Copyright 2007 Noodlesoft, L.L.C.. All rights reserved.
// The code is provided under the MIT license.
// The code has been extended to support layer-backed views. However, only the top view is
// considered here. The code might not produce the desired output if only a subview has its layer
// set. So better set it on the top view (which should cover most cases).
NSImageView *imageView;
NSImage *image;
NSRect frame;
BOOL isOneShot;
frame = [self frame];
isOneShot = [self isOneShot];
if (isOneShot) {
[self setOneShot: NO];
}
BOOL hasLayer = [[self contentView] wantsLayer];
if ([self windowNumber] <= 0) // <= 0 if hidden
{
// We need to temporarily switch off the backing layer of the content view or we get
// context errors on the second or following runs of this code.
[[self contentView] setWantsLayer: NO];
// Force window device. Kinda crufty but I don't see a visible flash
// when doing this. May be a timing thing wrt the vertical refresh.
[self orderBack: self];
[self orderOut: self];
[[self contentView] setWantsLayer: hasLayer];
}
// Capture the window into an off-screen bitmap.
image = [[NSImage alloc] initWithSize: frame.size];
[[self contentView] lockFocus];
NSBitmapImageRep* rep = [[NSBitmapImageRep alloc] initWithFocusedViewRect: NSMakeRect(0.0, 0.0, frame.size.width, frame.size.height)];
[[self contentView] unlockFocus];
[image addRepresentation: rep];
// If the content view is layer-backed the above initWithFocusedViewRect call won't get the content
// of the view (seems it doesn't work for CALayers). So we need a second call that captures the
// CALayer content and copies it over the captured image (compositing so the window frame and its content).
if (hasLayer)
{
NSRect contentFrame = [[self contentView] bounds];
int bitmapBytesPerRow = 4 * contentFrame.size.width;
CGColorSpaceRef colorSpace = CGColorSpaceCreateWithName(kCGColorSpaceSRGB);
CGContextRef context = CGBitmapContextCreate (NULL,
contentFrame.size.width,
contentFrame.size.height,
8,
bitmapBytesPerRow,
colorSpace,
kCGImageAlphaPremultipliedLast);
CGColorSpaceRelease(colorSpace);
[[[self contentView] layer] renderInContext: context];
CGImageRef img = CGBitmapContextCreateImage(context);
CFRelease(context);
NSImage *subImage = [[NSImage alloc] initWithCGImage: img size: contentFrame.size];
CFRelease(img);
[image lockFocus];
[subImage drawAtPoint: NSMakePoint(0, 0)
fromRect: NSMakeRect(0, 0, contentFrame.size.width, contentFrame.size.height)
operation: NSCompositeCopy
fraction: 1];
[image unlockFocus];
}
ZoomWindow *zoomWindow = [[ZoomWindow alloc] initWithContentRect: rect
styleMask: NSBorderlessWindowMask
backing: NSBackingStoreBuffered
defer: NO];
zoomWindow.animationTimeMultiplier = 0.3;
[zoomWindow setBackgroundColor: [NSColor colorWithDeviceWhite: 0.0 alpha: 0.0]];
[zoomWindow setHasShadow: [self hasShadow]];
[zoomWindow setLevel: [self level]];
[zoomWindow setOpaque: NO];
[zoomWindow setReleasedWhenClosed: NO];
[zoomWindow useOptimizedDrawing: YES];
imageView = [[NSImageView alloc] initWithFrame: [zoomWindow contentRectForFrameRect: frame]];
[imageView setImage: image];
[imageView setImageFrameStyle: NSImageFrameNone];
[imageView setImageScaling: NSScaleToFit];
[imageView setAutoresizingMask: NSViewWidthSizable | NSViewHeightSizable];
[zoomWindow setContentView: imageView];
[self setOneShot: isOneShot];
return zoomWindow;
}
- (void)fadeIn
{
[self setAlphaValue: 0.f];
[self orderFront: nil];
[NSAnimationContext beginGrouping];
[[NSAnimationContext currentContext] setDuration: 0.3];
[[self animator] setAlphaValue: 1.f];
[NSAnimationContext endGrouping];
}
- (void)zoomInWithOvershot: (NSRect)overshotFrame withFade: (BOOL)fade makeKey: (BOOL)makeKey
{
[self setAlphaValue: 0];
NSRect frame = [self frame];
ZoomWindow *zoomWindow = [self createZoomWindowWithRect: frame];
zoomWindow.alphaValue = 0;
[zoomWindow orderFront: self];
NSDictionary *windowResize = #{NSViewAnimationTargetKey: zoomWindow,
NSViewAnimationEndFrameKey: [NSValue valueWithRect: overshotFrame],
NSViewAnimationEffectKey: NSViewAnimationFadeInEffect};
NSArray *animations = #[windowResize];
NSViewAnimation *animation = [[NSViewAnimation alloc] initWithViewAnimations: animations];
[animation setAnimationBlockingMode: NSAnimationBlocking];
[animation setAnimationCurve: NSAnimationEaseIn];
[animation setDuration: 0.2];
[animation startAnimation];
zoomWindow.animationTimeMultiplier = 0.5;
[zoomWindow setFrame: frame display: YES animate: YES];
[self setAlphaValue: 1];
if (makeKey) {
[self makeKeyAndOrderFront: self];
} else {
[self orderFront: self];
}
[zoomWindow close];
}
This is implemented in an NSWindow category. So you can call:
- (void)zoomInWithOvershot: (NSRect)overshotFrame withFade: (BOOL)fade makeKey: (BOOL)makeKey
on any NSWindow.
I should add that I haven't been able to get both animations to run at the same time (fade and size), but the effect is quite similar to how NSPopover does it. Maybe someone else can fix the animation issue.
Needless to say this code works on 10.6 too where you don't have NSPopover (that's why I have written it in the first place).
I have NSStatusItem with a custom NSView which shows images.
Whether the menu is opened or not it show different images just like that:
isMenuVisible = NO;
- (void)awakeFromNib {
statusItem = [[NSStatusBar systemStatusBar] statusItemWithLength:NSVariableStatusItemLength];
[statusItem retain];
dragStatusView = [[DragStatusView alloc] init];
[dragStatusView retain];
dragStatusView.statusItem = statusItem;
[dragStatusView setMenu:statusMenu];
[dragStatusView setToolTip:NSLocalizedString(#"Menubar Countdown",
#"Status Item Tooltip")];
[statusItem setView:dragStatusView];
[dragStatusView setTitle:#"11"];
}
- (void)drawImage:(NSImage *)aImage centeredInRect:(NSRect)aRect{
NSRect imageRect = NSMakeRect((CGFloat)round(aRect.size.width*0.5f-aImage.size.width*0.5f),
(CGFloat)round(aRect.size.height*0.5f-aImage.size.height*0.5f),
aImage.size.width,
aImage.size.height);
[aImage drawInRect:imageRect fromRect:NSZeroRect operation:NSCompositeSourceOver fraction:1.0f];
}
- (void)drawRect:(NSRect)rect {
// Draw status bar background, highlighted if menu is showing
[statusItem drawStatusBarBackgroundInRect:[self bounds]
withHighlight:isMenuVisible];
if(isMenuVisible) {
[self drawImage:image2 centeredInRect:rect];
}else {
[self drawImage:image1 centeredInRect:rect];
}}
(Of course this is not everything, but i hope all the relevant code to understand my problem)
Now i want to show a NSProgressIndicator in this NSView (in this NSStatusItem) if an upload is proceeding which means
1. Set the NSProgressIndicator when upload starts
2.Received something ? ==> Hide NSProgressIndicator show the image again.
How would i solve this ?
Please help me. Thanks
Here is the solution for View based status item.
NSStatusBar *bar = [NSStatusBar systemStatusBar];
self.theItem = [bar statusItemWithLength:NSVariableStatusItemLength];
self.statusView = [[NSView alloc] initWithFrame:NSMakeRect(0, 0, 40, 20)];
NSProgressIndicator* progress = [[NSProgressIndicator alloc] initWithFrame:NSMakeRect(0, 0, 40, 20)];
[progress setIndeterminate:NO];
[self.statusView addSubview:progress];
self.theItem.view = self.statusView;
You can also draw a progress bar your self in Menu based status item
on progress change you can simply change the image of your status item.
- (void) updateIconWithProgress:(float)aProgress
{
NSImage* image = [NSImage imageNamed:#"small_icon_16_16.png"];
NSImage* img = [image copy];
[img lockFocus];
NSRect rect = NSMakeRect(2, 4, 12.0*aProgress, 8.0);
[[NSColor blueColor] set];
[NSBezierPath fillRect:rect];
[img unlockFocus];
[self.theItem setImage:img];
}
p.s. The code was written for ARC (Automatic Reference Counting) so there is no retain or release.
How can i take an image and stretch it to fill the screen on my UIView (320/460)
I am loading and placing it, however as you can see, some scaling is needed.
Thank you!
CGRect gameArea = CGRectMake(0, 0, 320, 460);
UIImage *backgroundImage = [UIImage imageNamed:#"green_background.jpg"];
UIImageView *myImageView = [[UIImageView alloc] initWithImage:backgroundImage];
[myImageView setContentMode:UIViewContentModeScaleToFill];
UIView *topView = [[UIView alloc] initWithFrame:gameArea];
[topView addSubview:myImageView];
[[self view] addSubview:topView];
Like I said in my comments above to Shamsiddin's post, the UIImageView needs a size to know where to stretch to. Here I'm using the same size of the UIView. I've added another answer because the code to UIView is missing. So here's the complete code.
// Area of the UIView and UIImageView
CGRect gameArea = CGRectMake(0, 0, 320, 460);
// Create UIImageView with Image
UIImage *backgroundImage = [UIImage imageNamed:#"green_background.jpg"];
UIImageView *myImageView = [[UIImageView alloc] initWithFrame:gameArea];
[myImageView setImage:[backgroundImage stretchableImageWithLeftCapWidth:3 topCapHeight:3]];
[myImageView setUserInteractionEnabled:YES];
// Create UIView and insert subview
UIView *topView = [[UIView alloc] initWithFrame:gameArea];
[topView addSubview:myImageView];
[[self view] addSubview:topView];
CGRect gameArea = CGRectMake(0, 0, 320, 460);
UIImage *backgroundImage = [UIImage imageNamed:#"green_background.jpg"];
UIImageView *myImageView = [[UIImageView alloc] initWithFrame:gameArea];
[myImageView setImage:[backgroundImage stretchableImageWithLeftCapWidth:3 topCapHeight:3]];
[myImageView setUserInteractionEnabled:YES];
[self.view addSubview:myImageView];
try
UIView *view;
view.ContentMode = UIViewContentModeScaleToFill;
I just did this in my own iOS5 app, i needed to dynamically set the background image and scale it. Imagine you are doing this in - (void)viewWillAppear:(BOOL) animated
UIImageView *imageview = [[UIImageView alloc] initWithFrame:self.view.frame];
[imageview setContentMode:UIViewContentModeScaleAspectFill];
[imageview setImage:[UIImage imageNamed:#"Background.png"]];
[self.view addSubview:imageview];
[self.view sendSubviewToBack:imageview];
So we create the view, set it's scaling mode, add the bg image, set it as the subview in the main view and then push it to the back so it does not occupy any other subviews.
Please accept this answer.
I have a NSView, there is a NSImageView on the NSView
in the source codes of the NSView
I wrote:
NSImage *image = [[[NSImage alloc] initWithContentsOfURL:url] autorelease];
NSImageView *newImageView = nil;
newImageView = [[NSImageView alloc] initWithFrame:[self bounds]];
[newImageView setImage:image];
[newImageView setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
Is there a way to read the width and height of the NSView and NSImageView?
The size of any view (NSView, NSImageView, etc.) is view.frame.size or view.bounds.size.
In both cases it is an identical NSSize struct. You can write code like this:
NSSize size = newImageView.frame.size;
NSLog(#"size: %#", NSStringFromSize(size));
NSLog(#"size: %f x %f", size.width, size.height);
To change it, you need to update the view frame property:
NSRect frame = view.frame;
frame.size = NSMakeSize(<#new width#>, <#new height#>);
view.frame = frame;
Try the - (NSRect)bounds method.
I am launching detail pages from a UITableView and within that detail page there is an image. I would like it to be zoomable, so I'd like the contents of that detail page to sit inside a scrollView. So far no luck, the labels, textviews and images are fine, but I can't get the ScrollView implemented.
here is my .m: THANKS!
- (void)viewDidLoad {
UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];
scrollView.contentSize = CGSizeMake(320, 700);
scrollView.clipsToBounds = YES;
super.view.backgroundColor = [UIColor whiteColor];
[scrollView setUserInteractionEnabled:YES];
self.navigationItem.title = [NSString stringWithFormat:selectedCellItem];
CGRect frame = CGRectMake(0, 0, 10, 10);
self.view = [[UIView alloc] initWithFrame:frame];
self.view.backgroundColor = [UIColor whiteColor];
frame = CGRectMake(0, 320, 10, 10);
UILabel *label = [[UILabel alloc] initWithFrame:frame];
//label.text = selectedCellItem;
label.font=[UIFont fontWithName:#"Verdana-Bold" size:20.0];
label.textAlignment = UITextAlignmentCenter;
[self.view addSubview:label];
[label release];
frame = CGRectMake(0, 320, 320, 60); //Description
UITextView *labelDesc = [[UITextView alloc] initWithFrame:frame];
labelDesc.text = selectedCellDesc;
labelDesc.font=[UIFont fontWithName:#"Verdana" size:12.0];
labelDesc.textAlignment = UITextAlignmentLeft;
//labelDesc.textAlignment = UITextAlignmentTop;
[self.view addSubview:labelDesc];
[labelDesc release];
frame = CGRectMake(0, 0, 320, 320); //Image
UIImageView *imageItem = [[UIImageView alloc] initWithFrame:frame];
[imageItem setImage:[UIImage imageNamed:selectedCellImage]];
// GET THIS ONE WORKING RIGHT>>[imageItem setImage:[UIImage imageNamed:[NSString stringWithFormat:#"%#.png", [[NSBundle mainBundle] bundlePath], selectedCellImage]]]; //use
//imageItem = [[UIImageView alloc] initWithContentsOfFile:[NSString stringWithFormat:#"shirt.png", [[NSBundle mainBundle] bundlePath]]];
//labelDesc.font=[UIFont fontWithName:#"Zapfino" size:13.0];
//labelDesc.textAlignment = UITextAlignmentCenter;
imageItem.contentMode = UIViewContentModeScaleAspectFit;
[self.view addSubview:imageItem];
//[imageItem release];
[super viewDidLoad];
}
/*
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
*/
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload {
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc {
[super dealloc];
}
#end
I think that you're missing the following line to add the UIScrollView as a subview.
[self.view addSubView:scrollView];