is there a way to resize the current window to maximal size in Awesome wm? Something like maximizing, but without locking the maximum-ness. Currently, when I want to maximize a floating window I cycle through the layouts, the non-floating layouts resize the window to the desired size and then I return back to the floating layout.
How to do it better?
Thanks!
You could add a clientkey with a function like function(c) c:geometry(c.screen.geometry) end.
In Awesome 4.0+ (currently the Git master version), there is:
awful.placement.maximize
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I'm trying to follow the example at the below link to have a picture (in a qlabel) shown in a scrollable area.
https://doc.qt.io/qt-5/qtwidgets-widgets-imageviewer-example.html
I'm using Qt Designer to make the ui instead of hardcoding everything. So I have a QLabel, in a QWidget (with a grid layout assigned to it), in a QScrollArea.
From the tutorial, they state the following for the sizepolicy of the QLabel:
We set imageLabel's [QLabel] size policy to ignored, making the users able to scale the image to whatever size they want when the Fit to Window option is turned on. Otherwise, the default size policy (preferred) will make scroll bars appear when the scroll area becomes smaller than the label's minimum size hint.
Setting it to ignored fits to the window, as expected and as stated. Setting it to preferred provides scroll bars when the image is larger than the scroll area, also as expected and as stated. My issue is that when the sizepolicy is set to preferred, the resize function of the QLabel doesn't work. It always stays at the default size of the loaded image. The only way that I'm able to get the resize function to work is when I don't assign a layout/break the layout to the widget in the QScrollArea, but then no scrollbars will appear when the image is larger than the QScrollArea.
Does anyone have any ideas of how to make the resize function and scrollbars work at the same time?
Thanks in advance for any help. I'm trying to learn qt5 still and this seems like it'd be a simple thing to do, but it's slowly driving me crazy.
I'm trying to make my UI content expand nicely when the user resizes the window. I'm doing this in Qt Designer and learning about layouts and size policies.
Seems that everything is working fine for now: one layout stays within its maximum size, while another expands with the window resize, and they all stay above their minimum sizes. That's great and all, but the problem is that if I have a list with a lot of items, or if I am displaying a very large image, it will expand beyond the available window space and cause the window to be huge.
How can I specify something along the lines of "do not expand beyond the available window space"? I've played around with the size policies, but I couldn't get it to work. Is this something I need to set for the form itself rather than the layouts it contains?
I should specify this is the desired behavior: Display the widget as large as the available window, even if the widget content is too small. Expand/Shrink the widget to fill the window when the window is resized. Do not expand beyond the available window space. The widgets in question are 2 images (labels) and 1 list view.
I set the size policy to "ignored" for the respective widgets. That fixed it.
Or you can set the window maximum size.
I am now trying to resize a qgraphicsview to a preffered size:
I am using layouts:
this->layout()->addWidget(&qtview);
I have layouts everywhere, so thet the size of my main widow is adjusted depending on its contents.
If I use:
qtview.setMinimumWidth(500);
qtviewSetMinimumHeight(500);
Then my view is scaled to the given size, but I am not able to shrink the main window. (which makes sense as I set a minimum soze)
I would like to tell qt my preferred (not minimum or maximum) size for the view, letting the view use scrollbars when needed (i.e. if the preferred size does not fit in my screen), or letting qt have a smaller view than my preferred size if the scene is smaller than my view, (or enlarge the scene to fit the view in this case)
I am searching for something looking like an hypothetical method setPreferredWidth().
What can I do to get this behaviour?
It sounds like you're looking for the QGraphicsView function setSizePolicy: -
setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred));
I am working on a project where I have to display a pretty large (vertically) main Widget.
In the initial Version of my GUI it was just added as the central Widget of a QMainWindow, which caused the Problem that on small screen resolutions the controls on the Bottom of the Widget are unreachable.
To solve this i wrapped a QScrollArea around the main Widget, but now the main window is always relatively small even if it doesn't have to.
What do i need to change so the Main Windows (vertical) size is large enough to show all the contents unless it would be too large for the screen resolution? Also I don't want it to be stretched, so simply always using the whole vertical screen resolution is not an option. Ideally the size should be fixed to the size needed by the contents (w/o the scroll area) and only smaller where needed.
Overriding the sizeHint method did only resulted in a small enlargement of the Window and setting the minimal height brings me back to the beginning where some of the controls are not assessable on small resolutions.
Since i am new to QT I am actually out of ideas how to google the solution because most Solutions I can find are about sizing components inside a Window and not the Window itself.
By default a QScrollArea will not attempt to expand to fit its contents. In order to do this you will need to re-implement QScrollArea's sizeHint() to return the size of QScrollArea's child widgets.
In your question it sounds like you were trying to re-implement MainWindow's sizeHint? re-implementing sizeHint on the top-level window will have no effect as sizeHint designed for use with widgets inside layouts.
I'm programming a debate-graph with Raphael JS. Users can add nodes to the graph. Eventually the graph gets really big and the canvas is still the same size. the canvas (in raphael js: paper) is inside another div with "overflow: scroll;", so lets ignore screen real estate
Is there a way that I resize the canvas without reloading the page (to assign new X/Y values)?
Alternatively, can I create a second bigger canvas in parallel and copying all the elements over? is there a way?
If I understand your question, just call setSize() to expand the size of the canvas to the size needed as you need it. I've used this in a div with overflow:scroll to get the effect you describe.
In my case, I didn't want to resize, I wanted to zoom.
In other words, show the user the growing graph inside a constant-sized div.
So I needed: setViewBox()