QPixmap||QMainWindow problem

EpicLoyd

I'm trying to set background to my window. i have an png image with alpha channel. When i'm scaling image to fit in size of my window only mask of this image is scaled, image - not.
link text --- image

MainWindow::MainWindow(QApplication *app,QWidget *parent) : QMainWindow(parent),ui(new Ui::MainWindow)
{
	this->app = app;
    ui->setupUi(this);

    setWindowFlags( Qt::FramelessWindowHint );

    QPixmap bkgnd(":/launcher_body.png");

    qDebug() << bkgnd.size();
   bkgnd = bkgnd.scaled(this->size(), Qt::KeepAspectRatio, Qt::SmoothTransformation);
    qDebug() << bkgnd.size();


    QPalette palette;
    palette.setBrush(QPalette::Background, bkgnd);
    this->setPalette(palette);
    this->setMask(bkgnd.mask());
}
```)

mrjj

Hi
Its strange
I tried your code here and it does scale the actual image to the size of
the mainwindow.

http://postimg.org/image/4nfa4zlil/

EpicLoyd

@mrjj could it be related to image itself? ( e.g: wrong parameters to save image?)

mrjj

@EpicLoyd
i wondered that too but png is png.
but fast to test
https://www.dropbox.com/s/xflsnfngw8wjlx0/Untitled-1.png?dl=0
as mine did

The code shown is the full version yes?
U do nothing else with the image?

EpicLoyd

@mrjj umm http://prntscr.com/9j0tbe probably this is mask. Actual image aligned and we can't see it
http://prntscr.com/9j0tm1
no, i did nothing
uh oh
"libpng warning: iCCP: known incorrect sRGB profile"

mrjj

@EpicLoyd
Ok it does different on your platform.
it should be red.
Im on win 7.
what is your platform?
update:
you use another theme than me.
I wonder if picture is really shown ?
It seems just to be mask.

-"libpng warning: iCCP: known incorrect sRGB profile"
yeah, it seems the png plugin dont like photoshops normal color profile.
Its from within libpng. still shows correctly.

EpicLoyd

@mrjj i've fixed my issue by using another way of paiting - override paint event