Conforms to NSObject
Declared in DTAttributedTextContentView.h

Overview

Protocol to provide custom views for elements in an DTAttributedTextContentView. Also the delegate gets notified once the text view has been drawn.

Tasks

Notifications

Providing Custom Views for Content

Instance Methods

attributedTextContentView:didDrawLayoutFrame:inContext:

Called after a layout frame or a part of it is drawn. The text delegate can draw contents that goes over the text in this method.

- (void)attributedTextContentView:(DTAttributedTextContentView *)attributedTextContentView didDrawLayoutFrame:(DTCoreTextLayoutFrame *)layoutFrame inContext:(CGContextRef)context

Parameters

attributedTextContentView

The content view that drew a layout frame

layoutFrame

The layout frame that was drawn for

context

The graphics context that was drawn into

Declared In

DTAttributedTextContentView.h

attributedTextContentView:shouldDrawBackgroundForTextBlock:frame:context:forLayoutFrame:

Called before the text belonging to a text block is drawn.

- (BOOL)attributedTextContentView:(DTAttributedTextContentView *)attributedTextContentView shouldDrawBackgroundForTextBlock:(DTTextBlock *)textBlock frame:(CGRect)frame context:(CGContextRef)context forLayoutFrame:(DTCoreTextLayoutFrame *)layoutFrame

Parameters

attributedTextContentView

The content view that drew a layout frame

textBlock

The text block

frame

The frame within the content view’s coordinate system that will be drawn into

context

The graphics context that will be drawn into

layoutFrame

The layout frame that will be drawn for

Return Value

YES is the standard fill of the text block should be drawn, NO if it should not

Discussion

This gives the developer an opportunity to draw a custom background below a text block.

Declared In

DTAttributedTextContentView.h

attributedTextContentView:viewForAttachment:frame:

Provide custom view for an attachment, e.g. an imageView for images

- (UIView *)attributedTextContentView:(DTAttributedTextContentView *)attributedTextContentView viewForAttachment:(DTTextAttachment *)attachment frame:(CGRect)frame

Parameters

attributedTextContentView

The content view asking for a custom view

attachment

The DTTextAttachment that this view should represent

frame

The frame that the view should use to fit on top of the space reserved for the attachment

Return Value

The view that should represent the given attachment

Declared In

DTAttributedTextContentView.h

attributedTextContentView:viewForAttributedString:frame:

Provide generic views for all attachments.

- (UIView *)attributedTextContentView:(DTAttributedTextContentView *)attributedTextContentView viewForAttributedString:(NSAttributedString *)string frame:(CGRect)frame

Parameters

attributedTextContentView

The content view asking for a custom view

string

The attributed sub-string containing this element

frame

The frame that the view should use to fit on top of the space reserved for the attachment

Return Value

The view that should represent the given hyperlink or text attachment

Discussion

This is only called if the more specific delegate methods are not implemented.

See Also

Declared In

DTAttributedTextContentView.h

attributedTextContentView:viewForLink:identifier:frame:

Provide button to be placed over links, the identifier is used to link multiple parts of the same A tag

- (UIView *)attributedTextContentView:(DTAttributedTextContentView *)attributedTextContentView viewForLink:(NSURL *)url identifier:(NSString *)identifier frame:(CGRect)frame

Parameters

attributedTextContentView

The content view asking for a custom view

url

The NSURL of the hyperlink

identifier

An identifier that uniquely identifies the hyperlink within the document

frame

The frame that the view should use to fit on top of the space reserved for the attachment

Return Value

The view that should represent the given hyperlink

Declared In

DTAttributedTextContentView.h

attributedTextContentView:willDrawLayoutFrame:inContext:

Called before a layout frame or a part of it is drawn. The text delegate can draw contents that goes under the text in this method.

- (void)attributedTextContentView:(DTAttributedTextContentView *)attributedTextContentView willDrawLayoutFrame:(DTCoreTextLayoutFrame *)layoutFrame inContext:(CGContextRef)context

Parameters

attributedTextContentView

The content view that will be drawing a layout frame

layoutFrame

The layout frame that will be drawn for

context

The graphics context that will drawn into

Declared In

DTAttributedTextContentView.h