I have created a custom NSWindow using:
self = [super initWithContentRect:contentRect styleMask:8 backing:bufferingType defer:flag];
Which handles resizing fine. However, it doesn't change the cursor when i hover over the borders. I could do this myself but i cannot create a trackingRect which goes beyond the edges of the window.
Any ideas how i could manage this would be great.
Thanks,
Ben
I came across this, the fix for me was to subclass NSWindow and put this in the implementation:
- (BOOL)canBecomeKeyWindow
{
return YES;
}
NSWindow.styleMask indicating what kinds of control items it displays should include NSResizableWindowMask that tells to display a resize control.
[window setStyleMask:NSResizableWindowMask];
Related
I am writing a Cocoa app and do not want it focus on mouse click it, but I found no way to implement yet. Any one can give me suggestions ?
I've finally found a solution!
Create a subclass of NSView, and reimplement the following methods:
-(BOOL) shouldDelayWindowOrderingForEvent:(NSEvent *)theEvent
{
return YES;
}
-(void) mouseDown:(NSEvent *)theEvent
{
[NSApp preventWindowOrdering];
}
and set the contentView property of the created NSWindow, and set the window style mask to NSBorderlessWindowMask , and it works.
There is method(s) you may override in your subclass with returning NO
-(BOOL)acceptsFirstResponder
-(BOOL)becomeFirstResponder
Select the Table View in Interface Builder. There is a "Focus Ring" Attribute, change it to "None".
I set all these attributes in Scroll View, Clip View, and Table View.
Hope it help.
Is it a chance to programatically change the background color of NSCollectionView?
I was trying subclassing.. but not working..
#interface CollectionViewBg : NSCollectionView
in .m
[self setBackgroundColors:[NSArray arrayWithObjects:[NSColor blueColor], nil]];
In .m, remove this line :
[self setBackgroundColors:[NSArray arrayWithObjects:[NSColor blueColor], nil]];
And use this code:
- (void)drawRect:(NSRect)dirtyRect{
[[NSColor blueColor] setFill];
NSRectFill(dirtyRect);
}
Also don't forget to change class of NSCollectionView object in IB to CollectionViewBg.
Hope this helps :)
Guess subclassing isn't a great idea, because most of Cocoa controls provide various techniques to avoid subclassing in order to customize appearance and behavior.
In this particular case, you can set backgroundView property to your NSCollectionView and provide a custom view that is dedicated for drawing a custom background.
If you need to change only background color, then you can consider take advantage of the fact that collection view usually resists inside scroll view. Just set backgroundColor and drawsBackground properties of NSScrollView.
Here's a more modern solution. First, make yourself an NSView subclass that draws the effect you want to achieve. Here's a simple one that paints a block colour:
class ColouredView: NSView {
#IBInspectable var color: NSColor = .windowBackgroundColor
override func draw(_ dirtyRect: NSRect) {
color.setFill()
dirtyRect.fill()
}
}
Now go to your nib or storyboard and drag a custom view onto the left bar. We don't want it to be part of the view hierarchy, but we do want it to be listed under the view controller containing the collection view. Just drag it in below 'First Responder'. You can then set up any important properties or relationships - in my case, the background colour.
Finally, right-click your collection view and connect its 'background view' outlet to your custom view. This lets you do all the setup in your storyboard. If you like you can make your custom view #IBDesignable but I find that usually causes more trouble than it's worth.
Whenever I try to create a custom window using NSBorderlessWindowMask and set an NSView (for example an NSImageView) as its contentView, I get a 1px gray border around the NSView and I don't seem to be able to get rid of it.
I have followed several approaches including Apple's RoundTransparentWindow sample code as well as several suggestions on StackOverflow.
I suspect the gray border is either coming from the window itself or the NSView.
Have any of you experienced this problem or do you have a possible solution?
The code is fairly straightforward. This is the init method of the custom window:
- (id)initWithContentRect:(NSRect)contentRect styleMask:(NSUInteger)aStyle backing:(NSBackingStoreType)bufferingType defer:(BOOL)flag {
self = [super initWithContentRect:contentRect styleMask:NSBorderlessWindowMask backing:NSBackingStoreBuffered defer:YES];
if (self != nil) {
[self setAlphaValue:1.0];
[self setBackgroundColor:[NSColor clearColor]];
[self setOpaque:NO];
}
return self;
}
To test this, in IB I place an NSImageView in that custom window WITHOUT border and yet the image in the NSImageView has a border. The same goes for other NSView subclasses, such as NSTextField, NSTableView.
In addition, I also noticed that the same is happening with the sample application (RoundTransparentWindow) of Apple. Is it even possible to draw an NSView in a custom window without a 1px border?
Thanks
Are you sure this happens when you use a regular NSView with no drawing? I bet not. Other controls (like NSImageView)have borders. Maybe you should double check to make sure they're turned off whe possible.
Update - How do you get your view into your window? You don't include that code. I created a basic test project (download it here) with an image well and it works just fine. See for yourself.
I have a NSTextView with a sizeable quantity of text. Whenever I scroll however, the view isn't updated properly. There are some artifacts that remain at the top or the bottom of the view. It appears that the view doesn't refresh itself often enough. If I scroll very slowly the view updates correctly though. If I add a border to the view everything works perfectly, borderless view is the one that has a problem. Here's a link to a screenshot:
Thanks
Have you set the setDrawsBackground and copiesOnScroll propertes for either the NSScrollView or the NSClipView?
The first thing I would suggest is turning off the "draws background" property of the NSScrollView:
[myScrollView setDrawsBackground:NO];
Note that this should be set on the NSScrollView, and not on the embedded NSClipView.
The following excerpt from the documentation may be relevant:
If your NSScrollView encloses an NSClipView sending a setDrawsBackground: message with a parameter of NO to the NSScrollView has the added effect of sending the NSClipView a setCopiesOnScroll: message with a parameter of NO. The side effect of sending the setDrawsBackground: message directly to the NSClipView instead would be the appearance of “trails” (vestiges of previous drawing) in the document view as it is scrolled.
Looks like the text field isn't even in the scrolling-area... Are you sure something isnt overlapping it?
I had a similar trouble - artifacts develop when the NSTextView is embedded in another scrollview (ie. a NSTableView).
I actually turned on the setdrawsbackground, and then added a nice color to make it disappear again.
-(void)awakeFromNib{
NSScrollView *scroll = [self enclosingScrollView];
[scroll setBorderType:NSNoBorder];
[scroll setDrawsBackground:YES];
[scroll setBackgroundColor:[NSColor windowBackgroundColor]];
}
This in combination with a scrollWheel event let me use the NSTextView in a NSTableView.
-(void)scrollWheel:(NSEvent *)theEvent{
NSScrollView *scroll = [self enclosingScrollView];
[[scroll superview] scrollWheel:theEvent];
}
I had the same trouble some time ago. I don't remember how I solved it.
Try to place the NSTextView to another view if the superview is a custom view. Just to see what will happen.
The problem
I have a transparent NSView on a transparent NSWindow. The view's drawRect: method draws some content (NSImages, NSBezierPaths and NSStrings) on the view but leaves parts of it transparent.
Clicking on the regions of the view that have been drawn on invokes the usual mouse event handling methods (mouseDown: and mouseUp:).
Clicking on the transparent areas gives focus to whatever window is behind my transparent window.
I would like to make parts of the transparent region clickable so that accidentally clicking between the elements drawn on my view does not cause the window to lose focus.
Solutions already attempted
Overriding the NSView's hitTest: method. Found that hitTest: was only called when clicking on a non-transparent area of the view.
Overriding the NSView's opaqueAncestor method. Found that this was not called when clicking on any part of the view.
Filling portions of the transparent area with [NSColor clearColor] in the drawRect: method, and with an almost-but-not-quite-transparent colour. This had no effect.
Experimented with the NSTrackingArea class. This appears to only add support for mouseEntered:, mouseExited:, mouseMoved:, and cursorUpdate: methods, not mouseUp: and mouseDown:.
I had the same problem. It looks like [window setIgnoresMouseEvents:NO] will do it.
(On Lion, at least. See http://www.cocoabuilder.com/archive/cocoa/306910-lion-breaks-the-ability-to-click-through-transparent-window-areas-when-the-window-is-resizable.html)
As far as I know, click events to transparent portions of windows aren't delivered to your application at all, so none of the normal event-chain overrides (i.e -hitTest:, -sendEvent:, etc) will work. The only way I can think of off the top of my head is to use Quartz Event Taps to capture all mouse clicks and then figure out if they're over a transparent area of your window manually. That, frankly, sounds like a huge PITA for not much gain.
George : you mentioned that you tried filling portions with an almost but not quite transparent color. In my testing, it only seems to work if the alpha value is above 0.05, so you might have some luck with something like this:
[[NSColor colorWithCalibratedRed:0.01 green:0.01 blue:0.01 alpha:0.05] set];
It's an ugly kludge, but it might work well enough to avoid using an event tap.
Did you try overriding
- (NSView *)hitTest:(NSPoint)aPoint
in your NSView sublcass?
You can use an event monitor to catch events outside a window/view.
https://developer.apple.com/library/mac/documentation/cocoa/conceptual/eventoverview/MonitoringEvents/MonitoringEvents.html
You can override the hitTest method in your NSView so that it always returns itself.
According to the NSView documentation, the hitTest method will either return the NSView that the user has clicked on, or nil if the point is not inside the NSView. In this case, I would invoke [super hitTest:], and then return the current view only if the result would otherwise be nil (just in case your custom view contains subviews).
- (NSView *)hitTest:(NSPoint)aPoint
{
NSView * clickedView = [super hitTest:aPoint];
if (clickedView == nil)
{
clickedView = self;
}
return clickedView;
}
You can do:
NSView* windowContent = [window contentView];
[windowContent setWantsLayer:YES]
Making sure that the background is transparent:
[[windowContent layer] setBackgroundColor:[[NSColor clearColor] CGColor]];
Another option would be to add a transparent background image that fills the contentView.