FireMonkey – TArc and Retina, not the best of friends

1
JED JED 7 years ago in components, Delphi, FireMonkey 0

Last week I noticed a post on www.fmxexpress.com that showed a different UI for a progress bar. So instead of starting work on something I should have, I turned the code into a component and added the ability to change the colours used when displayed.

I’d known TArc didn’t render nicely on a Retina device because I was using it to render a navigation UI concept. Which I’ve had to shelve because of this issue.

The control does look good under other platforms (untested under Android – issues not anticipated though).

You can download the full source code for the control from the Quality Central report lodged for the rendering issue. It looks like you will need to use a native client to download from the QC report as it doesn’t look like you can from the web client.

The control has the following “license” in the main unit:

{

TCircleProgress is based on code made open source by developer OneChen.

Original Code Link: https://github.com/OneChen/ProgressCircle
How I found out link: http://www.fmxexpress.com/build-a-progress-spinner-using-objects-in-delphi-xe6-firemonkey-on-android-and-ios/

Developer of this component: Jeremy North (jeremy.north@gmail.com)

DO NOT PAY FOR THIS COMPONENT. DONATE TO THE ORIGINAL AUTHOR OF THE IDEA IF YOU WANT TO CONTRIBUTE.

Disclaimer: This code is provided free of charge, bugs and all.

}

 

Windows

 

The Windows capture actually shows another drawing bug with FireMonkey. Notice how the rectangle at the top has two black dots in the top left and top right corners. This happens when you eliminate sides from a rectangle and maintain one full side to be drawn. Something that I’ve reported previously.

Report No: 122616 (RAID: 47827) Status: Open
Removing Sides can leave unwanted dots in corners
http://qc.embarcadero.com/wc/qcmain.aspx?d=122616

 

OS X

 

iOS

 

NOTE: This isn’t an issue for just TArc though, it is an issue with the GPU canvas. In previous versions, you could disable the usage of the GPU canvas, however with XE6 – the option to switch it off has been deprecated.

 

Zoomed view under iOS

 

Report No: 126186 (RAID: 52756) Status: Open
[Retina] [iOS] TArc doesn’t rendering nicely on a Retina device
http://qc.embarcadero.com/wc/qcmain.aspx?d=126186

 

Reported and opened. Hopefully in the next release, this rendering issue is addressed.