[OpenJDK 2D-Dev] [PATCH] Fix BasicStroke's usage of dash elements

Jennifer Godinez Jennifer.Godinez at Sun.COM
Tue Jan 13 19:48:39 UTC 2009

Hi Omair,

Thanks for submitting the patch.  Please confirm that you have already signed the Sun Contributor 
Agreement (SCA).  See "Become a contributor" in http://openjdk.java.net/contribute/.

Until that time, we will put this patch on hold.


Omair Majid wrote:
> Hi,
> The Java Tutorials [1] say this about the dash_array parameter of 
> BasicStroke():
> The dash array defines the dash pattern. Alternating elements in the 
> array represent the dash length and the length of the space between 
> dashes in user coordinate units. Element 0 represents the first dash, 
> element 1 the first space, and so on.
> However, in openjdk6 (and openjdk7 - I havent tested explicitly, just 
> looked at the code) it seems to be the other way around: element 0 
> represent the first space and element 1 the first dash (and so on). The 
> attached program, when run with openjdk6, produces a solid black border 
> around the button text instead of no border.
> The attached patch tries to fix the problem by initializing the renderer 
> with dashOn = true so that the first element of the array produces a 
> dash. The second element then produces a space and so on.
> Cheers,
> Omair
> [1] http://java.sun.com/docs/books/tutorial/2d/geometry/strokeandfill.html

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