On 10 Dec 2012, at 19:13, Kyle Sluder <k...@ksluder.com> wrote:
> It's my understanding that the intent of NSStringDrawing is to provide
> the exact same drawing as NSTextFieldCell.
Is that stated anywhere?
> But the following code
> produces text that is offset by 2pt to the left from a standard
> NSTextFieldCell:
>
> @implementation MyTextFieldCell /* : NSTextFieldCell */
>
> - (void)drawInteriorWithFrame:(NSRect)cellFrame inView:(NSView
> *)controlView {
> NSStringDrawingOptions options = 0;
> if (self.truncatesLastVisibleLine)
> options |= NSStringDrawingTruncatesLastVisibleLine;
> if (!self.usesSingleLineMode)
> options |= NSStringDrawingUsesLineFragmentOrigin;
>
> [self.attributedString drawWithRect:[self
> titleRectForBounds:cellFrame] options:options];
> }
>
> @end
>
> I can't tell if I'm using the wrong rect or failing to pass the right
> arguments to -drawWithRect:options:. Anyone have any clues?
>
Have you confirmed that the issue occurs with an NSString instance?
In the past I have experienced layout differences when calling either
drawAtPoint: or drawWithRect:options.
I would experiment with calling drawAtPoint: and drawInRect:
The Text Layout Programming Guide says:
String Drawing and Typesetter Behaviors
There are differences among Cocoa’s three ways to draw text with regard to
typesetter behavior, which is described in “Typesetter Behaviors and Versions.”
By default, the string-drawing convenience methods and NSCell objects supplied
by the Application Kit useNSTypesetterBehavior_10_2_WithCompatibility, whereas
NSLayoutManager objects use NSTypesetterLatestBehavior. It is important to use
the same typesetter behavior when both measuring and rendering text, to avoid
differences in paragraph spacing, line spacing, and head indent handling.
In cases where you must measure text one way and render it another, set the
typesetter behavior to match using thesetTypesetterBehavior: method defined by
NSLayoutManager and NSTypesetter. For example, if you need to use
anNSLayoutManager object to measure text and convenience string drawing methods
to draw it, change the layout manager’s typesetter behavior to
NSTypesetterBehavior_10_2_WithCompatibility.
Jonathan
_______________________________________________
Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com
This email sent to arch...@mail-archive.com
