Intense Masking....

[been_1990]

IS there a way I can set masks for each QListView icon and text? So I'll have floating icons on the screen when set to Icon mode. Is there a way to get each icons x & y, width & heigth? Then mask them each time QListView is resized or the icon is moved? Thanks for the info!

[Lykurg]

Please can you specify or quickly draw a image of what you want achieve. To get the icons you have to ask your model and for the width & hight your delegate. (or QAbstractItemView::visualRect( const QModelIndex & ) etc.)

[been_1990]

This is a mock-code of what I want:

for each icon in QListView
            get its x(), y(), width() and height()
 
            pass it to a QRegion:
            QRegion maskedRegion(x(),y(),width(),height(), QRegion::Rectangle);
            set its Mask:
            setMask(maskedRegion);

for each icon in QListView
            get its x(), y(), width() and height()

            pass it to a QRegion:
            QRegion maskedRegion(x(),y(),width(),height(), QRegion::Rectangle);
            set its Mask:
            setMask(maskedRegion);

To copy to clipboard, switch view to plain text mode 

Something similar to these aero buttons

[wysota]

Well, it didn't clarify anything to me, but QPixmap has methods for querying its width and height and you can retrieve position of each of the model indexes with QAbstractItemView::visualRect() (so you don't even need to ask for the pixmap size).

[been_1990]

This is the app without masking:


This is it with masking:

Images above were edited...

How can I use QAbstractItemView::visualRect()?
ui->QListView->what here?

[Lykurg]

Don't think you loading legal stuff with your eMule And on your pictures I don't see any significant difference. Only in the second the background of your list view is transparent.. Don't get your intention.

[wysota]

This is the app without masking:
(...)

This is it with masking:
(...)

Please don't use external sites for storing images you refer to in your posts. Use the attachment feature of the forum instead.

How can I use QAbstractItemView::visualRect()?

Just as any other method - call it.

ui->QListView->what here?

Eeem.... "visualRect()" ?

[been_1990]

My intention is just that: mask each index icon so that they stay without the background.
I used external images because when I clicked the add-image it asked me for an url, so..
Thanks for all the help guys.. Ill try these out as soon as I can.

[wysota]

What does "stay without a background" mean? Icons don't have a background, it's transparent unless you paint it yourself.

[been_1990]

How do I get each index? ui->QListView->children()? Sorry if am asking too much, I havent found any tutorial or book that explains exactly this issue. Theres also QAbstractItemView::indexWidget ( const QModelIndex & index ) const thats seems to be related but I didnt quite understand what it does.

[been_1990]

I mean the app background, not the QListView background or icon background.

[been_1990]

In another attempt to explain what I want, here's a little illustration:


And I even learned how to use attachment!

[wysota]

You can use QWidget::setMask() although using Qt for the thing you are trying to do is not the smartest idea. I'd use widgets, mask them, bypass the window manager and reimplement their mouse events to handle moving them around.

Of course nothing will cause those objects to become real desktop icons so if this is what you are trying to obtain then Qt won't help you with that.

[been_1990]

So I wont be able to use QListView or any other thing to do that... awww.. But I could count files in a folder, get their MIME info, set a widget for each file, implement some click/right-click/double-click function, then set them in an ordered manner. Would that be too much work for something easily done with something else? Probably... Oh wel... I tried.. Thanks for all the help, I'll use then a simple QListView with a boring white background... Thanks!

[wysota]

You don't have to have a boring white background. You can make the background of your listview transparent (if your system supports it) so that your desktop shines through.

[aamer4yu]

Under windows you can have a look at Qt::WA_TranslucentBackground.
It will help you achieve what you want...

[been_1990]

I've searched many times here in the forum and on the net, and aparently I cant apply a transparent background, only to the whole app. of course the posts were outdated, but..
Where can I find Qt::WA_TranslucentBackground documentation? Its not in QtCreator Help. And does it really work?

@wysota: You can make the background of your listview transparent (if your system supports it)
Im using Win Vista. Is there any cross platform way? Thanks again.

[spirit]

I've searched many times here in the forum and on the net, and aparently I cant apply a transparent background, only to the whole app. of course the posts were outdated, but..
Where can I find Qt::WA_TranslucentBackground documentation? Its not in QtCreator Help. And does it really work?

have a look here.

[been_1990]

Oh... Apparently thats only for QT4.5 and Im using QT4.4.3.. Lets start downloading...

[spirit]

yes, it's introduced in Qt 4.5.