I've got a xib with a Label (TheLabel)... which is an NSTextField. It's text is not editable by the user.
I have it's value bound to an NSString* in my controller class.
I have it's font bound to a NSFont* in my controller class.
I can change the NSString in my controller class and I see it reflected in the label.
I can change the NSFont in my controller class and I see that reflected in the label.
But...
I can't for the life of me figure out how to turn on and off underlining.
If I call this function...
-(void)setUnderlineType:(NSNumber*)underline
{
NSMutableAttributedString* content = [[TheLabel attributedStringValue] mutableCopy];
[content addAttribute:NSUnderlineStyleAttributeName value:underline range:NSMakeRange(0, content.length)];
[TheLabel setAttributedStringValue:content];
}
... I get an underline, but then the bound font is ignored and I get some standard font. From then on, changing the NSFont in my controller has no visible effect on the NSTextField.
I tried removing attributes from 'content' before adding the underline... removing the font attributes... but that doesn't work either.
Any time I call this function, the font that is bound to the NSTextField become 'ignored' and I see a standard font is a standard size.
Any guidance would be greatly appreciated.
You need to set NSFontAttributeName to update a font of NSAttributedString.
NSFont *font = ...;
NSMutableAttributedString* content = [[theLabel attributedStringValue] mutableCopy];
[content addAttribute:NSFontAttributeName value:font range:NSMakeRange(0, content.length)];
[theLabel setAttributedStringValue:content];
Related
I want to add a image in the navbar as title. I'm using the following code in AppDelegate.m file
self.navigationItem.titleView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"akskeving_logo.png"]];
I'm gettin the following error: Property 'navigationItem'not found on object of type 'HsAppDelegate'
You are trying to access the navigationItem property of your app delegate, but it doesn’t have that property. navigationItem is a property of UIViewController. Something along these lines (details may be different for your app):
self.rootViewController.navigationItem.titleView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"akskeving_logo.png"]];
Edit: actually, that is probably not exactly what you want to do. You should be accessing the navigationItem of the view controller that you are presenting in the navigation controller. So,
self.somePresentedViewController.navigationItem.titleView = …;
I've been using a NSTextView to display some non-editable text and would like to highlight any links within it's string. I've seen some code that parses out the links and adds attributes. That would work fine, but I was wondering if I could somehow reuse the built-in link detection somehow.
I've tried setting:
[textView setEnabledTextCheckingTypes:NSTextCheckingTypeLink];
[textView setAutomaticLinkDetectionEnabled:YES];
and using:
[textView checkTextInDocument:nil];
after setting the string.
For the sake of completeness, here is how I've manually added links to a NSTextView:
- (void)highlightLinksInTextView:(NSTextView *)view {
NSDataDetector *linkDetector = [NSDataDetector dataDetectorWithTypes:NSTextCheckingTypeLink error:nil];
NSArray *matches = [linkDetector matchesInString:view.string options:0 range:NSMakeRange(0, view.string.length)];
[view.textStorage beginEditing];
for (NSTextCheckingResult *match in matches) {
if (!match.URL) continue;
NSDictionary *linkAttributes = #{
NSLinkAttributeName: match.URL,
};
[view.textStorage addAttributes:linkAttributes range:match.range];
}
[view.textStorage endEditing];
}
Unfortunately you have to call this every time you set the NSTextView string.
I recently stumbled upon this and created an NSTextView subclass, LinkDetectingTextView.swift. Hope this helps someone in the future.
I'm using an NSOutlineView with source list style, and using the view based (rather than cell based) outline view.
I would like to be able to make some rows bold. However, my attempts to change the font (manually in IB, through code in viewForTableColumn:…, or through the Font Bold binding) have so far been ignored.
From this message, it appears that this is because the source list style for NSOutlineView takes over managing the text field's appearance:
I'm guessing that you've hooked up your text field to the textField outlet of the NSTableCellView? If so, I think you might be running into NSTableView's automatic management of appearance for source lists.
Try disconnecting the text field from the textField outlet and see if your custom font sticks.
If I disconnect the textField outlet, the appearance does come under my control, and my emboldening works.
However, now I can't get it to look like the automatic one. By which I mean, when NSOutlineView was managing the text field's appearance, the font was bold and gained a drop shadow when any item was selected, but when I'm managing it manually this is not the case.
Can anyone answer either of these questions:
How can I get the Font Bold binding to work when NSOutlineView is managing the appearance of my text field
If I don't have NSOutlineView manage the appearance of my text field, how can I make it look and behave like it would if I did have it manage it?
I think I found the solution:
NSTableCellView manages the appearance of it's textField outlet by setting the backgroundStyle property on cells of contained controls. Setting this to NSBackgroundStyleDark triggers a special path in NSTextFieldCell which essentially sets an attributedStringValue, changing the text color and adding an shadow via NSShadowAttributeName.
What you could do is two things:
Set the backgroundStyle on your own in a custom row or cell view subclass.
Use a custom NSTextFieldCell in the cell's text field and change the behavior/drawing.
We did the latter since we needed a different look for a themed (differently colored) table view. The most convenient (albeit surely not most efficient) location we found for this was to override - drawInteriorWithFrame:inView: and modify the cell's attributed string before calling super, restoring the original afterwards:
- (void)drawInteriorWithFrame:(NSRect)cellFrame inView:(NSView *)controlView
{
NSAttributedString *originalString = self.attributedStringValue;
// Customize string as you like
if (/* whatever */)
[self setAttributedStringValue: /* some string */];
// Regular drawing
[super drawInteriorWithFrame:cellFrame inView:controlView];
// Reset string
if (self.attributedStringValue != originalString)
self.attributedStringValue = originalString;
}
In the hope this may help others in similar situations.
Not sure if I have missed anything in your question but changing the font using the following works for me. ReminderTableCellView is just a subclass of NSTableCellView with an additional dateField added.
- (NSView *)outlineView:(NSOutlineView *)outlineView viewForTableColumn:(NSTableColumn *)tableColumn item:(id)item {
//LOG(#"viewForTableColumn called");
// For the groups, we just return a regular text view.
if ([_topLevelItems containsObject:item]) {
//LOG(#" top level");
NSTableCellView *result = [outlineView makeViewWithIdentifier:#"HeaderCell" owner:self];
// Uppercase the string value, but don't set anything else. NSOutlineView automatically applies attributes as necessary
NSString *value = [item uppercaseString];
[result.textField setStringValue:value];
//[result.textField setFont:[NSFont systemFontOfSize:[NSFont smallSystemFontSize]]];
return result;
} else {
//LOG(#" menu item");
// The cell is setup in IB. The textField and imageView outlets are properly setup.
// Special attributes are automatically applied by NSTableView/NSOutlineView for the source list
ReminderTableCellView *result = [outlineView makeViewWithIdentifier:#"DataCell" owner:self];
if ([item isKindOfClass:[OSTreeNode class]]) {
[result.textField setFont:[NSFont boldSystemFontOfSize:13]];
result.textField.stringValue = [item displayName];
result.dateField.stringValue = [item nextReminderDateAsString];
}
else
result.textField.stringValue = [item description];
if (_loading)
result.textField.textColor = [NSColor grayColor];
else
result.textField.textColor = [NSColor textColor];
NSImage *image = [NSImage imageNamed:#"ReminderMenuIcon.png"];
[image setSize:NSMakeSize(16,16)];
[result.imageView setImage:image];
//[result.imageView setImage:nil];
return result;
}
}
Resulting view is shown below. Note this is is an NSOutlineView with Source Listing option selected but I can't see why this would'nt work for a normal outlineView.
I am using Xcode 4.3 and I want to be able to edit the value of a UISlider using a UITextField. How can I do this? I have a slider that displays its value in a text field, but can I also set the slider's value from a text field?
Thanks for the help!!
Assuming "textField" is the name of your text field, I would add a target to it in your viewDidLoad method:
[textField addTarget:self
action:#selector(textFieldDidChange)
forControlEvents:UIControlEventEditingChanged];
And then handle the change like you said:
- (void)textFieldDidChange {
Slider.value = [[textfield.text] intValue];
}
Hope this helps.
I have a table view with several cells, each containing a UITextView.
The user can edit each text view that he clicks.
But when he clicks DONE, how do I access each text view, to read each that was edited?
You can use UItextField delegate to get the text from current text filed as -
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
NSString *textFieldValue = [textField text];
}
Let's say your UITextView is called "tv"
You can use something like:
NSString *contents = tv.text;
I believe you can also use something along the lines of:
NSString *contents = [tv getText];