Hi Ogla,
On Saturday 10 June 2006 11:46, Veli Ogla Sungutay wrote:
> I need to create GUI applications that shows images on the screen, and let
> the user do simple manipulation stuff: resizing, cropping, renaming etc...
>
> I see there are several Graphics and Image classes in the API; What is the
> path I should take?
It is not that trivial but it is possible.
If you do not care about performance too much (at least in the beginning),
you can use the built-in image class (UImage) and assign this as icon of a
label (or button).
That means, you create your own image buffer and feed it as RGB(A) data to an
UImageIO class, create an image and so on.
I have attached a small example (image.cpp) which shows how to do that (based
on the base.cpp example).
Compile it via:
g++ -o image image.cpp `pkg-config --cflags --libs ufo`
Otherwise you can draw the image yourself using OpenGL methods.
To do this, you have to subclass UWidget and override
UWidget::paintWidget(UGraphics*) with your own code (set up matrices and
OpenGL state, draw image, revert OpenGL matrices and states).
Hope that helps,
Johannes
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