Re: Using GM with Qt

PerlQt and QtPy are worth a look too. If you want to do the GUI in C++ then
you are a very special type of person. I have not used PerlQt, but now that
this thread has occurred, I may do so.

On Thu, Dec 24, 2015 at 10:20 AM, Bob Friesenhahn <
[email protected]> wrote:

> On Wed, 23 Dec 2015, DJ wrote:
>
> > Greetings. I just discovered GraphicsMagick last night while running
> > octave on my Linux box (Linux Mint 17.1). I have only recently begun to
> > explore image processing programming.
> >
> > Quick question:
> >
> > Is it practical to use GraphicsMagick libraries with Qt, i.e. for
> > display and manipulation in a Qt gui? A quick look at the API docs
> > indicate that GraphicsMagick has its own way to display an image under
> > X. But does it also provide some in-memory format for images that might
> > be easily displayable for manipulation in Qt?
>
> Yes.  Both GraphicsMagick and Qt have their own way to store images in
> memory.  X11 has yet more ways, and the video card might provide even
> more ways.  There will be some memory duplication, no matter what you
> do.
>
> The GraphicsMagick X11 display capabilities have nothing to do with
> what you would need for Qt.  For Qt, you would need a small bit of C++
> code to copy pixels from the GraphicsMagick Image representation to
> Qt's own representation.  Then use Qt to display it.  If the image is
> modified using GraphicsMagick functions, then the Image would need to
> be copied to the Qt representation in order to display the changes
> using Qt.  Naturally, this means that the copy code needs to be as
> efficient as possible.
>
> I am sure that this has all been done before given that KDE has long
> provided a path from GraphicsMagick into Qt such as to support Krita
> (https://www.kde.org/applications/graphics/krita/) and other image
> oriented applications.
>
> Bob
> --
> Bob Friesenhahn
> [email protected], http://www.simplesystems.org/users/bfriesen/
> GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
>
>
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-- 
Rick Leir
Developer, Canadiana.ca

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