[Development] Qt for iOS: Management Retina vs Non-Retina Images

Ziller Eike Eike.Ziller at theqtcompany.com
Wed Oct 8 10:10:51 CEST 2014

On Oct 8, 2014, at 9:18 AM, Robert Iakobashvili <coroberti at gmail.com> wrote:

> On Wed, Oct 8, 2014 at 10:03 AM, Ziller Eike
> <Eike.Ziller at theqtcompany.com> wrote:
>> On Oct 6, 2014, at 1:59 PM, Robert Iakobashvili <coroberti at gmail.com> wrote:
>>> Gentlemen,
>>> If images are placed to resource file,
>>> is there any option for an automatic management
>>> of using either Retina or non-Retina images
>>> using Apple's naming convention or the manual
>>> management is the only option like for Mac OS X?
>>> Here's an example of what Qt developers
>>> are doing:
>>> http://qt-project.org/forums/viewthread/44805/
>>> Are there any other approaches or
>>> best practices?
>> Just use
>> Image {
>>    source: “foo.png”
>> }
>> and it will try “foo at 2x.png” on 2x screens on OS X and iOS automatically.
>> Br, Eike
> Thank you for your response.
> This is a widget-based application, though.

QIcon does automatic loading of @2x images afair. QPixmap and QImage only set the devicePixelRatio corresponding to the file name automatically, but you have to define yourself if you want to load a @2x or not.

Br, Eike

> Kind regards,
> Robert

Eike Ziller, Senior Software Engineer - Digia, Qt
Digia Germany GmbH, Rudower Chaussee 13, D-12489 Berlin
Geschäftsführer: Mika Pälsi, Juha Varelius, Tuula Haataja
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