Steema Central

Hello, I'm using the latest (?) v1.7 July 2014 teechart.js. I believe this includes a fix to http://bugs.teechart.net/show_bug.cgi?id=831, involving patterns in bar series. While the image does appear, it is stretched to the bar rectangle. An image needs to be tiled to serve as a pattern. Is this something that can be done?

Also, in VCL, a two color, B&W pattern displays with the series colors. If this is not possible, I can create a pattern per-color, though this is obviously extra work.

I can provide a sample if you need it.

Thanks.

Hello,

Jim Green wrote:I'm using the latest (?) v1.7 July 2014 teechart.js. I believe this includes a fix to http://bugs.teechart.net/show_bug.cgi?id=831, involving patterns in bar series. While the image does appear, it is stretched to the bar rectangle. An image needs to be tiled to serve as a pattern. Is this something that can be done?

I see. I've reopened the ticket and added a comment to it so it can be revised.

Jim Green wrote:Also, in VCL, a two color, B&W pattern displays with the series colors. If this is not possible, I can create a pattern per-color, though this is obviously extra work.

I've added a new ticket to the public tracker:
http://bugs.teechart.net/show_bug.cgi?id=885

Thanks.

FWIW, I added tiling by adding a "style" property to ChartImage and using createPattern/fill when style is "repeat" (instead of drawImage). Source attached.

Note that it also allows repeat-x, repeat-y and no-repeat, though only "repeat" works. Maybe you'll spot why - I'm a complete noob at Canvas drawing.

(I also disabled "hassymbol" in Legend to allow symbols to show in more cases.)

Jim.

Hi Jim,

I've removed the attachment because it contained the source code of TeeChart.
However, I downloaded it first and I'll post it in the ticket B831 as a private comment so it can be studied for implementation in next releases.

Sorry! Should have thought of that...

Hi Jim,

Jim Green wrote:Sorry! Should have thought of that...

No problem!
And thanks for sharing the fix proposal!