[Interest] QQuickGrabItemResult on iOS

[Ben Lau]

Hi Michael,

Voted.

Thank for suggestion! Change the code to use canvas is a reasonable method
. Just the work load is huge.. I have an arrow component in QML and linked
with a lots of images in different size with text arranged in grid.

So before go into the canvas approach,  I would like to try few more thing
first.

Before Qt 5.4 is out , I have written my own version of grabToImage(). And
I just found that the code works in iPhone with Qt 5.3.2 . However, it use
QQuickShaderEffectTexture and the class is no longer available in Qt 5.4. I
would like to take a look and see can it be fixed by using private API.

On Wed, 11 Mar 2015 at 21:48 Michael R Nelson <mnelson at sutron.com> wrote:

> QQuickItem::grabToImage() not working on iOS for me either in 5.4.0 and
> 5.4.1. Here’s a bug report, please up-vote if it’s important to you:
> https://bugreports.qt.io/browse/QTBUG-44450. Regarding work-around:
> perhaps get a 2D context in a Canvas object and paint the object in
> onPaint()? This is something I’ve been meaning to try.
>
>
>
> Regards,
>
> Mike
>
>
>
> *From:* interest-bounces+mnelson=sutron.com at qt-project.org [mailto:
> interest-bounces+mnelson=sutron.com at qt-project.org] *On Behalf Of *Ben Lau
> *Sent:* Wednesday, March 11, 2015 6:54 AM
> *To:* Brian Dentino
> *Cc:* interest at qt-project.org Interest
> *Subject:* Re: [Interest] QQuickGrabItemResult on iOS
>
>
>
>
>
> On 17 October 2014 at 10:11, Brian Dentino <brian.dentino at gmail.com>
> wrote:
>
> Has anyone had any success using QQuickItem::grabToImage on iOS? I'm using
> it successfully on OSX and android, and it works perfectly fine in the iOS
> simulator (iOS 7 and 8), but when I run on an iOS device, the images come
> up empty. I've tried on both an iPad 2 and an iPhone 5s (both running iOS
> 8), but I don't have access to any devices with iOS 7.
>
> Any advice on how to root-cause this?
>
> Thanks,
> Brian
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>
>
>
> Hi Brain,
>
>
>
> I have got the same problem. The grabToImage() do not works with iOS 8. It
> works only in simulator. Did you found any solution to fix it?
>
>
>
>
>
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