Canvas drawing and retina

General
1

I’m redoing elements of my TabBar control for a project - finally getting around to sorting out the drawing!

As you can see from the attached image - the text and arrows don’t seem to be very nice on a retina device.

I’m not doing anything code wise to handle retina - I’m just doing drawing from the graphics class.

' Draw the tab title g.ForeColor = If (Tab.Active, kActiveTabFontColour, kFontColour) g.DrawString(tab.Title, TabStartPoint + ((TabWidth / 2) - (StringWidth / 2)), 20)

  • and -

' Right Arrow g.ForeColor = If (RightButtonPressed, kButtonPressedColour, kFontColour) g.DrawLine(me.Width - 20, 10, me.Width - 10, 26 / 2) g.DrawLine(me.Width - 20, 26 - 10, me.Width - 10, 13)

Any suggestions to improve matters would be gratefully accepted??

2

Looks like you need to enable Retina in the app…

Paste this in a text file:

[code]<?xml version="1.0" encoding="UTF-8"?>

NSHighResolutionCapable [/code]

Name it info.plist and drag it in to the project.

3

Oh - pretty stupid!
I have a build step to enable retina but never copied it to the test app!!!

Thanks Jim

4

Does that automatically enable Retina response for all things “drawn”
Text, drawline, drawrect etc… etc…
The only thing it DOESN’t do is handle switch @2X images??

If so, why doesn’t XOJO just make that a default entry for OSX?

5

Well here’s the after shot…

Just add this to a post build step

Dim App As String = CurrentBuildLocation + "/""" + CurrentBuildAppName + ".app""" Call DoShellCommand("/usr/bin/defaults write " + App + "/Contents/Info ""NSHighResolutionCapable"" YES")

6

[quote=199583:@Dave S]Does that automatically enable Retina response for all things “drawn”
Text, drawline, drawrect etc… etc…
The only thing it DOESN’t do is handle switch @2X images??

If so, why doesn’t XOJO just make that a default entry for OSX?[/quote]
I believe I recall something about Xojo not being officially retina compatible, and they didn’t want to enable the option until it was.