I implemented TTTabBar like this:
_tabBar = [[TTTabGrid alloc] initWithFrame:CGRectMake(0, 0, TTApplicationFrame().size.width-80, TT_ROW_HEIGHT) ];
_tabBar.backgroundColor = [UIColor clearColor];
_tabBar.tabItems = [NSArray arrayWithObjects:
[[[TTTabItem alloc] initWithTitle:#"aaa"] autorelease],
[[[TTTabItem alloc] initWithTitle:#"bbb"] autorelease],
nil];
//_tabBar.selectedTabIndex = 1;
[_tabBar sizeToFit];
self.navigationItem.titleView = _tabBar;
_tabBar is TTTabBar
but appears three column buttons:
How to set the column number, coz I just need two buttons here.
And, as you see in my code, I've set initWithTitle:#"aaa" but there is no any title on button. Anything wrong?
WHAT IF I JUST NEED LIKE THIS:
Two grid buttons
Did you try to set _tabBar.columnCount to 2?
But you are looking for UISegmentedControl with style set to BarStyle.
Related
I want to display tooltips over parts of an attributed string, and thought that using an NSToolTipAttributeName attribute on the required ranges would do the trick but I can't get it to work.
I am trying in MACOS, Xcode (9.2)
NSString *fullString = #"Create a new tooltip";
NSString *compareString =#"tooltip";
NSRange tooltipRange = [fullString rangeOfString: compareString];
[senderTextView.textStorage addAttribute:NSToolTipAttributeName
value:#"Custom tooltip"
range:tooltipRange];
[senderTextView.textStorage addAttribute:NSForegroundColorAttributeName
value:[NSColor redColor] range:tooltipRange];
The word "tooltip" is shown in red as expected, but no tooltip appears when I hover over it. What am I missing?
Couple of ways to do this, using the NSToolTipAttributeName in combination with NSLinkAttributeName, e.g.:
NSMutableDictionary* labelAttributes = [NSMutableDictionary new];
labelAttributes[NSToolTipAttributeName] = #"Tooltip";
labelAttributes[NSLinkAttributeName] = #"Link";
NSAttributedString* labelString = [NSAttributedString
attributedString:#"Display"]
withAttributes:labelAttributes];
Being careful not to forget displaysLinkToolTips = YES on the NSTextView.
Alternately, you can use the NSView Tooltips API, which provides:
- (NSToolTipTag)addToolTipRect:(NSRect)rect owner:(id)owner userData:(void *)data;
On a NSTextField I'm setting a custom font with a size of 140. The text is set to #"28". But as you can clearly see on the image, the text field has plenty of space on top. This only happens with certain type of fonts, not all of them. My question is what information from the font could be affecting the textfield that ends up cropping the text ? (Ascender, Cap Height ?). And if so, can I modify the font file to fix it ?
The baseline will vary between fonts. In addition, there are other metrics that vary. You can work around this problem with NSAttributedString. You could try varying the NSBaselineOffsetAttribute and from within a paragraph setMinimumLineHeight and setMaximumLineHeight. The following is an example. Make sure to create two textField labels and connect their outlets.
self.Label1.stringValue = #"Test Text";
//
// baseline is different for each font!
//
//self.Label2.stringValue = #"Test Text";
NSFont *otherFont = [NSFont fontWithName:#"MarkerFelt-Thin" size:40.0f];
NSNumber *baseline = [[NSNumber alloc] initWithFloat: 5.0f];
NSMutableParagraphStyle *paraStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
[paraStyle setParagraphSpacingBefore:20.0f];
[paraStyle setMinimumLineHeight:30.0f];
[paraStyle setMaximumLineHeight:50.0f];
NSDictionary *otherFDict = [NSDictionary dictionaryWithObjectsAndKeys: paraStyle, NSParagraphStyleAttributeName,
otherFont, NSFontAttributeName, baseline, NSBaselineOffsetAttributeName, nil];
NSMutableAttributedString *otherText = [[NSMutableAttributedString alloc] initWithString:#"Test Text" attributes:otherFDict];
self.Label2.attributedStringValue = otherText;
I am trying to create an NSTextField programmatically.
I want to use this NSTextField with auto layout, so its width will be defined automatically to display the entire line (there is only one line of text).
The problem is that textField.intrinsicContentSize and textField.fittingSize are both have -1 and 0 values for the horizontal coordinate, as the output of the code below is:
textField.intrinsicContentSize={-1, 21}
textField.fittingSize={0, 21}
The code:
NSTextField* textField = [[NSTextField alloc] initWithFrame:NSMakeRect(0, 0, 10, 24)];
NSString* str = #"One line of text here.";
[textField setStringValue: str];
[textField setTranslatesAutoresizingMaskIntoConstraints:NO];
[textField invalidateIntrinsicContentSize];
NSLog(#"textField.intrinsicContentSize=%#", NSStringFromSize(textField.intrinsicContentSize));
NSLog(#"textField.fittingSize=%#", NSStringFromSize(textField.fittingSize));
This makes the text field to have a zero width assigned by auto layout.
What should I do to get meaningful values for the fittingSize and intrinsicContentSize properties of the text field so they reflect the content of the text field?
Another way to compute the text field optimal width without using fittingSize is using the following code (replacing John Sauer's sizeTextFieldWidthToFit method):
- (void) sizeTextFieldWidthToFit {
[textField sizeToFit];
CGFloat newWidth = NSWidth(textField.frame);
textFieldWidthConstraint.constant = newWidth;
}
You can set the priority of textFieldWidthConstraint to be lower than the priority of another inequality constrain the represent your requirement to a minimal size of 25.
I can't explain why NSTextField's intrinsicContentSize's widths are -1, but I was able to calculate one based off its attributedString's size. Here's how I created the NSTextField:
// textField is an instance variable.
textField = [NSTextField new] ;
textField.translatesAutoresizingMaskIntoConstraints = NO ;
[view addSubview:textField] ;
NSDictionary* viewsDict = NSDictionaryOfVariableBindings(view, textField) ;
// textFieldWidthConstraint is an instance variable.
textFieldWidthConstraint = [NSLayoutConstraint constraintsWithVisualFormat:#"H:[textField(==0)]" options:0 metrics:nil views:viewsDict] [0] ;
[view addConstraint:textFieldWidthConstraint] ;
NSNumber* intrinsicHeight = #( textField.intrinsicContentSize.height ) ;
[view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:#"V:[textField(==intrinsicHeight)]" options:0 metrics:NSDictionaryOfVariableBindings(intrinsicHeight) views:viewsDict]] ;
// Position textField however you like.
[view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:#"H:|-[textField]" options:0 metrics:nil views:viewsDict]] ;
[view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:#"V:|-[textField]" options:0 metrics:nil views:viewsDict]] ;
[self sizeTextFieldWidthToFit] ;
// set textField's delegate so that sizeTextFieldWidthToFit is called when textField's text changes.
textField.delegate = self ;
And here are the methods that resize it as its text changes:
- (void) controlTextDidChange:(NSNotification*)aNotification {
if ( aNotification.object == textField )
[self sizeTextFieldWidthToFit] ;
}
- (void) sizeTextFieldWidthToFit {
// I'd like the width to always be >= 25.
CGFloat newWidth = 25 ;
if ( ! [textField.stringValue isEqualToString:#""] ) {
NSDictionary* attributes = [textField.attributedStringValue attributesAtIndex:0 effectiveRange:nil] ;
NSSize size = [textField.stringValue sizeWithAttributes:attributes] ;
newWidth = MAX(newWidth, size.width + 10) ;
}
textFieldWidthConstraint.constant = newWidth ;
}
I'm adding this here because these answers are old and I couldn't find everything needed to get NSTextField to automatically wrap and play nice using autolayout and NSConstraints in a single answer.
With these settings the text will:
Remain in the horizontal boundaries set by the constraints.
Wrap automatically on word boundaries.
Automatically adjust its height as required.
Push down anything below (if attached by constraints).
This is the code to make it just work:
NSTextField *instructions = [NSTextField labelWithString:#"Some very long text..."];
instructions.translatesAutoresizingMaskIntoConstraints = NO;
instructions.autoresizesSubviews = YES;
instructions.usesSingleLineMode = NO;
instructions.lineBreakMode = NSLineBreakByWordWrapping;
[instructions cell].wraps = YES;
[instructions cell].scrollable = NO;
instructions.maximumNumberOfLines = 10;
instructions.preferredMaxLayoutWidth = 400.0;
[self addSubview:iCloudInstructions];
[self addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:#"H:|[instructions]|" options:0 metrics:nil views:NSDictionaryOfVariableBindings(instructions)]];
[self addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:#"V:|[instructions]-(20)-[button]" options:0 metrics:nil views:NSDictionaryOfVariableBindings(instructions, instructions)]];
I have added a UITabBarController programatically (Search,Login) and I want to set second tabbaritem(Login) and its view to be selected when Login credentials are not correct.But I m unable to do it so ..Could not understand where I m going wrong ..?
Search *first = [[Search alloc] initWithNibName:#"Search" bundle:nil];
first.title=#"Search";
Login *second=[[Login alloc]initWithNibName:#"Login" bundle:nil];
second.title=#"Login";
NSArray *viewArray= [NSArray arrayWithObjects:first,second, nil];
tabBarController=[[UITabBarController alloc] init];
[tabBarController setViewControllers:viewArray animated:NO];
[tabBarController setSelectedIndex:2];
[self presentModalViewController:tabBarController animated:NO];
But here my SearchViewController is selected and displayed as default...Where i m going wrong..?
Error is in this line:
[tabBarController setSelectedIndex:2];
Counting starts not from 1 but from 0, so in your case you have to change it to:
[tabBarController setSelectedIndex:1];
I am using the following to create an NSPopupButton programmatically:
...
NSPopUpButton *accessoryView = [[NSPopUpButton alloc] initWithFrame:NSMakeRect(0, 0, 100, 24) pullsDown:YES];
NSFont *aFont = [NSFont systemFontOfSize:[NSFont systemFontSizeForControlSize:NSSmallControlSize]];
[accessoryView setBezelStyle:NSRecessedBezelStyle];
[accessoryView setFont:aFont];
[accessoryView setShowsBorderOnlyWhileMouseInside:YES];
[accessoryView setAutoresizingMask:NSViewMaxXMargin | NSViewMinYMargin];
NSArray *popupItems = [[NSArray alloc] initWithObjects:#"Your Account", #"Sign In", #"Create Account", nil];
[accessoryView addItemsWithTitles:popupItems];
...
Now, when I add the NSPopUpButton to my view, I end up with the button's text overlapping the icon used for the dropdown menu. I have seen this previously when I use NSControl:setAlignment but I am not using this here. Here is the output:
Can anyone see what I'm doing wrong?
Take care,
Jeremy
It just so happens this is a simple fix. (Thanks Beelsebob on irc.freenode.net!) Basically, you need to have the following code:
[[accessoryView cell] setArrowPosition:NSPopUpArrowAtBottom];
in there somewhere. (I added it just below the line to add the menu items.) I had read the API docs on this call a few times before, since I had implemented the same call with a value of NSPopUpNoArrow to remove the arrow as an interim fix, but it didn't make it clear that the proper value being used above would do what it's doing. Problem solved.