Let me elaborate the steps i am doing
Create Mac 10.9 Project
Drag a CustomView (Let's call it myView) to the .xib
Drag a NSButton to the .xib but out side the CustomView
Now programatically (using a other class) i add a NSTextField to the CustomView when the button is clicked by this code
NSTextField *textField = [[NSTextField alloc] init];
[textField setBezeled:NO];
[textField setEditable:NO];
[textField setSelectable:NO];
[textField setFont:[NSFont fontWithName:#"Arial" size:20]];
[textField setStringValue:#"Hello World!"];
int textWidth = textField.fittingSize.width;
int textHeight = textField.fittingSize.height;
[textField setFrame:NSMakeRect(0, 0, textWidth, textHeight)];
[myView addSubview:textField];
Now i see that the TestField is added to myView
All i want is the user can drag the textField movable inside myView
i added the following code
- (void)mouseDown:(NSEvent *)event{
NSLog(#"Hi");
}
But the NSLog is not getting shown
How do i make the NSTextField draggable?
Note: Because mouse-moved events occur so frequently that they can
quickly flood the event-dispatch machinery, an NSWindow object by
default does not receive them from the global NSApplication object.
However, you can specifically request these events by sending the
NSWindow object an setAcceptsMouseMovedEvents: message with an
argument of YES.
From Apple Docset
Related
I want to use layout constraints and create my UI programmatically. Here is a simple program that I'm hoping you can help me understand. In Interface Builder, I simply took the defaults -- there is an NSWindow with its default contentView. Below is all the code, and a screenshot.
I create a single button, and place it in the content view. Then I try to use constraints to make it fill the window. As you can see, it claims the layout is ambiguous. But when I click that button to "Exercise Ambiguity", nothing changes. The docs say it should choose a different possible layout.
I also think the content view is tightly surrounding the button and not filling the window, but I don't know how to force that with constraints.
// In AppDelegate.h
#interface AppDelegate : NSObject <NSApplicationDelegate> {
NSButton *_button;
}
#property (assign) IBOutlet NSWindow *window;
#end
// In AppDelegate.m
#implementation AppDelegate
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
NSView *contentView = (NSView*)_window.contentView;
_button = [[NSButton alloc] init];
_button.title = #"Test";
_button.translatesAutoresizingMaskIntoConstraints = NO;
contentView.translatesAutoresizingMaskIntoConstraints = NO;
[contentView addSubview:_button];
NSDictionary *viewsDict = NSDictionaryOfVariableBindings(_button, contentView);
NSMutableArray *constraints = [[NSMutableArray alloc] init];
[constraints addObjectsFromArray: [NSLayoutConstraint constraintsWithVisualFormat:#"|[_button]|" options:0 metrics:0 views:viewsDict]];
[constraints addObjectsFromArray: [NSLayoutConstraint constraintsWithVisualFormat:#"V:|[_button]|" options:0 metrics:0 views:viewsDict]];
[contentView addConstraints:constraints];
[_window visualizeConstraints:constraints];
printf("Is layout ambiguous? %d\n", contentView.hasAmbiguousLayout);
}
#end
What if you visualize constraints on a subsequent iteration of the run loop, for example with a timer or by clicking a button, after the layout engine has had a pass at it? It may just be ambiguous because the layout engine hasn’t solved the system yet.
Edit: I ran your code, and am seeing the same issue. I’m also stumped now.
I know how to do this in iOS but cannot figure it how to it in Cocoa.
I want to capture keyboard events and I think I need to override the acceptsFirstResponder method to accomplish that (keyDown method being triggered). So I created a class extending NSCustomView and tried to add it in the main Window but I just cannot understand how to do it. So far I added a Custom View to the main View then tried to add it programmatically like:
TestView *view = [[TestView alloc] init];
[[_window contentView] addSubview:view];
but this is not working. So how can I do this?
To see if the view has been added to a window, you can override the view's viewDidMoveToWindow method and log the value of [self window] to check (if it's nil then the view has been removed from a window):
- (void)viewDidMoveToWindow
{
NSLog(#"window=%p", [self window]);
[super viewDidMoveToWindow];
}
You should be subclassing NSView, not NSCustomView, and initWithFrame is the designated initializer for NSView, not init.
Try:
TestView *view = [[TestView alloc] initWithFrame:NSMakeRect(0, 0, 100, 200)];
[[_window contentView] addSubview:view];
I am using IKImageFlowView in my application and need to add a nsbutton over it,
I am using the code as given below,
In my .h file
IBOutlet id browserView;
in nib added a custom view and changed its class as myImageFlowView as I am subclassing from IKImageFlowView as
#interface myImageFlowView : IKImageFlowView
and in my appController class I am trying to add button to browserView with following code snippet,
NSRect initialFrame = NSMakeRect(20.0, 50.0, 100.0, 100.0);
NSButton *myBtn = [[NSButton alloc] init];
[myBtn setFrame:initialFrame];
[myBtn setBordered:NO];
[myBtn setAutoresizesSubviews:TRUE];
[myBtn.cell setImageScaling:NSImageScaleAxesIndependently];
[myBtn setImage:[NSImage imageNamed:#"AppleColor.png"]];
[browserView addSubview:myBtn];
I am not able to add this button as a subview to IKImageFlowView,I can add button to NSView.
What I am doing wrong.Please help.
In my app I need to add a UIView dynamically whenever user taps on a button in my main UIViewController. How can I do this?
Create a new method in your view controller with this signature: -(IBAction) buttonTapped:(id)sender. Save your file. Go to Interface Builder and connect your button to this method (control-click and drag from your button to the view controller [probably your File's owner] and select the -buttonTapped method).
Then implement the method:
-(IBAction) buttonTapped:(id)sender {
// create a new UIView
UIView *newView = [[UIView alloc] initWithFrame:CGRectMake(10,10,100,100)];
// do something, e.g. set the background color to red
newView.backgroundColor = [UIColor redColor];
// add the new view as a subview to an existing one (e.g. self.view)
[self.view addSubview:newView];
// release the newView as -addSubview: will retain it
[newView release];
}
I created a nib file and want to display dynamic text messages on it like file names that are selected or the no of files selected etc. Is there a way to to this?
I know this can be done for alert panels but i want it on my custom sheets.
Thanks
Either create connections between your NSTextField elements and your controller class and then set the labels programmatically (using setStringValue).
Or you could consider using bindings. See http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/CocoaBindings/CocoaBindings.html.
You can create a NSTextField programmatically like this:
(IBAction)showText:(id)sender {
NSRect frame = NSMakeRect(50, 50, 200, 100);
NSTextField *tf = [[NSTextField alloc] initWithFrame:frame];
[tf setStringValue:#"test"];
[tf setSelectable:NO];
[tf setEditable:NO];
[tf setBordered:NO];
[tf setDrawsBackground:NO];
[[[sender window] contentView] addSubview:tf];
[tf release];
}
or you could use NSString's methods for drawing text in a view, namely -drawAtPoint or -drawInRect