I have three background images for a button - left.png, center.png and right.png. The left and right ones have rounded edges and the center one is a single line which need to extend based on the size of the button. How do I create such a button? I have considered the option of constructing the image on the fly and apply it to the button in the resize event, but am looking to see if this is possible through stylesheets. Is this possible?
You can't do it with background-image alone. But it may be done with the help of border-image: http://qt-project.org/doc/qt-4.8/stylesheet-reference.html#border-image
Use background-repeat: repeat-x to fill the button and border-image to round out the edges.
You can do it with QPainter and constructing the image, but honestly for the complexity level and for a button class you might be better off learning how to do it by constructing a paintEvent in full using the standard primitives. It'll give you better fine grain control, just involves a bit of leg work.
Related
I was trying to add some transparency to a text and oddly enough I noticed it was only transparent on one side while being opaque on the other.
The expected behavior was transparent on both sides. Any idea why this happens?
Thank you.
https://aframe.io/docs/0.8.0/components/material.html#transparency-issues
With opacity, A-Frame sets three.js renderer to sortObjects: false. Transparency ordering is based on when objects are added / defined in the scene. Shuffle the order of the text in like the HTML or when they are injected and it should work.
(Working with Qt 4.8.4)
I'd like to create a custom frame for QLineEdit. One that has been created in photoshop and I have it in three images (as it needs to stretch in width):
left side image
center streetchable image
right side image
I'd like to find a way to replace the look of the QTLineEdit to this, while still retaining the edit visuals look/feel inside of it. It's just the frame I'm looking t replace.
How do I go about it? If I override paintEvent nothing is visible, not even what I type, not even the blinking cursor.
Have you tried:
create your own class CustomLineEdit inherited from QLineEdit,
load/free your pictures in constructor/destructor of CustomLineEdit,
reimplement paintEvent() in CustomLineEdit yourself,
in paintEvent() place all pictures as you need.
Ok. I think I nailed it:
I am setting the following stylesheet for my QLineEdit objects:
this->ui->myLineEdit->setStyleSheet("border-image: url(input_bg.png) 5 5 5 5 stretch stretch;border-width: 5px 5px 5px 5px;");
I am using "5" because in the image I used, a 5x5 cut of each corner encapsulates the area that doesn't stretch gracefully due to gradients within.
this makes sure that the border will work nicely when the edit control is of variable sizes.
I know there are many techniques how to stretch the image to the whole page. I like the ones based on "background-size: cover", but if it is justified, I can use another technique. My problem is that I need to hook links to some parts of this background image with some hover effects - imagine a picture on castle in the background highlighting its different parts when you hover them with mouse.
Note:
I prefer imagemap solution, because it allows polygon shaped hotspots.
Note that I do not want components on top of the image having it's own dimensions.
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()
I'm making a flex 3.5a/air2 application and I've made a popup window but I can't seem to get its bottom corners rounded. Setting cornerRadius seems to only affect the top corners.
There doesn't seem to be a roundedBottomCorners property like there is for panels, and adding a controlbar with a cornerRadius also has no effect.
I'm sure this is a very simple problem but would really appreciate any help as I can't find the answer on google or after searching on here!
If you can give up window header (and paint it yourself), try to make transparent window (with transparent background) and construct it from controls you need. I'm sure you can get window of any shape this way.
Ended up making the window transparent and setting showFlexChrome to false. Then using a container I was able to get rounded corners.
It didn't help my other problem which was trying to get a glow effect around the window and still being able to resize it.. for that I had to override the mouseDownHandler from the window class so I could modify the drag locations to the container canvas. What a pain!