[Qt-qml] Image { pixmap } is gone :( Can't use QIcons anymore

[bea.lam at nokia.com]

Hi Steve,

On 22/07/2010, at 1:03 AM, ext Stephen Kelly wrote:

> Hello,
> 
> The pixmap property has been removed.
> 
> http://bugreports.qt.nokia.com/browse/QTBUG-11980
> 
> This came as a great surprise to us because we are using it and it is
> already very late in the release cycle to be removing things like that. The
> replacement
> 
> http://doc.trolltech.com/main-snapshot/qdeclarativeimageprovider.html
> 
> Does not satisfy our usecase because it assumes that all you have in qml is
> a name of a pixmap you want, not the actual image.


How does your model assign the QIcon for each pixmap? If it is loaded from a file name, or has some other identifying name, you can add a new role for the model (e.g. "imageSource") and then assign this name as a value, with a prefix as necessary according to your custom image provider's name (e.g. "image://myimageprovider/the_icon_name"). Add the new role using QAbstractItemModel::setRoleNames(), and then in your QML you can replace

>      Image {
>          id: collectionIcon
>          pixmap: KDE.iconToPixmap( model.decoration, height );
>          width: 48; height: 48
>      }

with

Image {
	...
	source: imageSource
}


The relevant part of the imageSource string (e.g. "my_icon_name") will be passed to your QDeclarativeImageProvider::requestPixmap() method as the "id" string, so the requestPixmap() implementation can create a QIcon and return a pixmap using KDE.iconToPixmap() as before (or perhaps just load the pixmap without QIcon).

The provider can be registered with the QML engine that provides your view e.g. if using QDeclarativeView:

	view.engine()->addImageProvider("myimageprovider", new KDEIntegrationImageProvider);


regards,

Bea