qtoolbutton/qpushbutton icon based on button's size

mrjj · wrote on 22 Dec 2018, 16:35

@user4592357
ah, im an idiot :)
You said tool button.
They come with fixed SizePoliy

Just change to Preferred and they take all space.

user4592357 · 22 Dec 2018, 16:49

yes, that did. but now the "icons" aren't drawn on the buttons, but rather behind them (i could hardly see them, i saw a part of the icon behind the button).

mrjj · wrote on 22 Dec 2018, 16:49

@user4592357
Can you show that effect ?
It wont scale the icon, but keep the size to IconSize.
Why dont just paint it directly ? ( inherit ToolButton and implement paintEvent )

mrjj · wrote on 22 Dec 2018, 17:06

Hi
Like

with a small custom class.
Test project
https://www.dropbox.com/s/62flul5h8aa5shj/PatternButton.zip?dl=0

How do you determine the pattern it should use ?
I just used variables inside, but if you generate the buttons you could just give
as parameters.

user4592357 · 22 Dec 2018, 17:41

oh, the problem was that i was calling QToolButton::paintEvent(event); in the end.
without it the patterns are being drawn.
but if i don't call it, well, my button isn't a button and cannot be pressed, etc.

mrjj · wrote on 22 Dec 2018, 17:41

@user4592357
If you dont call QToolButton::paintEvent(event), the button
can still be pressed but it wont draw the effect.
But will send signal though.

You can just do it revers
call QToolButton::paintEvent(event) in top
then draw pattern with slightly smaller rect on top of what already drawn.
(i assume you need no texts)

user4592357 · 22 Dec 2018, 19:42

@mrjj
i managed to do that but i want to remove all spaces between buttons.
i've set setContentsMargins(0, 0, 0, 0) and setSpacing(0) for the layout.
this is what i have now: https://ibb.co/qYCm8vR
can't i remove those spaces?

mrjj · wrote on 22 Dec 2018, 19:42

@user4592357
Hi
The tool buttons seems to reserve some pixels so there will be a small space.

The lower ones are Frames and both layouts have same settings so its fair to say
its the closest you get with ToolButtons as seen in top.

user4592357 · 24 Dec 2018, 15:02

@mrjj
hi,
when i add the buttons to a layout, they take up more space (just because it's available).
how can i make the buttons be in their minimum size in that layout?

p.s. this is what i have set for the button:

setMinimumSize(...);
setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);

mrjj · 24 Dec 2018, 15:32

@user4592357
But would would be the minimum ?
You can set setMaximumSize of them if you want to limit it to
certain size. like 64x64. else layout makes them use the extra space.

user4592357 · 24 Dec 2018, 15:42

@mrjj
no i don't want max size...
i thought i could add a spacer at column 0 and last column, and set stretch factor to those columns

mrjj · wrote on 24 Dec 2018, 15:42

@user4592357
im not sure i understand.
You do not want a max size for widgets but at same time they are not allowed to use
all the space ?
well yes spacers should compress to minimum

user4592357 · 24 Dec 2018, 15:57

yes maybe that's weird but that's what i need.
when i added the spacer at col 0, and then the rest of the widgets, only the first widget got added.

mrjj · wrote on 24 Dec 2018, 15:57

@user4592357
Im not sure what you mean . Adding cant fail due to spacer.
did you set Minimum on the widgets as else they get compressed totally.

with no Minimum set

user4592357 · 25 Dec 2018, 00:03

i added spacers at both ends of hbox layout, but now the whole container widget gets larger instead of the buttons getting smaller (since there is a spacer around them)...

mrjj · wrote on 25 Dec 2018, 00:03

@user4592357
Hi
Its impossible to guess at with no code or pictures.
If i do the same with Horz layout i get this