Develop Reference

QTableView - how to highlight only text with color (not entire cell)

I would like to for some of the columns in my QTableView give color highlight to the text without filling the rest of the cell with color. This image shows exactly what I want:
What is the best way to do this? One option is to create each text value as an image externally and then set it as an icon (I know how to do that from other SO posts). But is there a better way?
I will do this for quite many tables / columns with many different values so I would need to create many images if I use icons. So it would be great if there is a way to instead write the text in the QTableView and somehow apply the color background so that it covers the text only.
Is it possible to e.g. paint that background using an item delegate somehow? Has someone done something similar with item delegates before and that can share an example of how it's done? I'm very new to Qt.
I'm using PyQt6.

Python pptx insert a picture in a table cell

Is there a way to insert a picture inside a cell using pptx python?
I'm also thinking of finding the coordinate of the cell and adjust the numbers for inserting the picture, but can not find anything.
Thank you.

No, unfortunately not. Note that this is not a limitation of python-pptx, it is a limitation of PowerPoint in general. Only text can be placed in a table cell.
There is nothing stopping you from placing a picture shape above (in z-order) a table cell, which will look like the picture is inside. This is a common approach but unfortunately is somewhat brittle. In particular, the row height is not automatically adjusted to "fit" the picture and changes in the content of cells in prior rows can cause lower rows to "move down" and no longer be aligned with the picture. So this approach has some drawbacks.
Another possible approach is to use a picture as the background for a cell (like you might use colored shading or a texture). There is no API support for this in python-pptx and it's not without its own problems, but might be an approach worth considering.

ObjectListView wxPython: how to show a wx.Color

I am using wxPython ObjectListView and it is very easy to use. Now I need to render a wx.Color as a column but I haven't found a way in the documentation. Basically I have list of items each of them have the following attributes: name, surname and hair color. Hair color is a RGB color and I would like to show it as a column in my ObjectListView.
Is there a way to do it ?
Many thanks

The answer appears to be No. The closest thing I could find was the following piece of documentation:
http://objectlistview.sourceforge.net/python/recipes.html#how-can-i-change-the-colours-of-a-row
However, this would only allow you to change the first column's background color. I attempted to do just that and that did not work either. You might want to take a look at the UltimateListctrl, which is a custom widget. Unfortunately, it's API is not the same as OLV.

For the future: what I did was to show the color as a background of the row of the list.

Python & translucent canvas

I'm looking for a way to draw real translucent lines with pygtk or wxPython, I now this is not possible with TKinter (I like this one because its already there). Also, I already now I can do this using PIL, but I want to draw direct to a canvas and it will be a dinamic content so I think using PIL will be a slow solution (and not elegant). Someone know a way to do this? Or maybe another toolkit that allows me to do this.
To get clear what I want is: If I drew lines with distinct colors that overlaps I need to be able to see both lines with a merged color at the intersection. Something like if the color I choose for the pen have a transparence instead of solid color.
Thanks.

Pretty much all "canvas" libraries have brushes with alpha.
PyGTK has the gtk.DrawingArea, often used with cairo.
Cairo can be used with wxPython as well.
QT has the Graphics View Framework.

How do I overlap widgets with the Tkinter pack geometry manager?

I want to put a Canvas with an image in my window, and then I want to pack widgets on top of it, so the Canvas acts as a background.
Is it possible to have two states for the pack manager: one for one set of widgets and another for another set?

The answer to your specific question is no. You can't have two states or otherwise use pack two different ways in the same parent.
However, what I think you want to accomplish is simple. Use the built-in features of the canvas to create an image item that is part of the canvas, then pack things into the canvas as if it were a frame.
You can accomplish a similar thing by creating a label widget with an image, then pack your other widgets into the label.
One advantage to using a canvas is you can easily tile an image to fill the whole canvas with a repeating background image so as the window grows the image will continue to fill the window (of course you can just use a sufficiently large original image...)

I believe that Bryan's answer is probably the best general solution. However, you may also want to look at the place geometry manager. The place geometry manager lets you specify the exact size and position of the widget... which can get tedious quickly, but will get the job done.

... turned out to be unworkable because I wanted to add labels and more canvases to it, but I can't find any way to make their backgrounds transparent
If it is acceptable to load an additional extension, take a look at Tkzinc. From the web site,
Tkzinc (historically called Zinc) widget is very similar to the Tk Canvas in that they both support structured graphics. Like the Canvas, Tkzinc implements items used to display graphical entities. Those items can be manipulated and bindings can be associated with them to implement interaction behaviors. But unlike the Canvas, Tkzinc can structure the items in a hierarchy, has support for scaling and rotation, clipping can be set for sub-trees of the item hierarchy, supports muti-contour curves. It also provides advanced rendering with the help of OpenGL, such as color gradient, antialiasing, transparencies and a triangles item.
I'm currently using it on a tcl project and am quite pleased with the results. Extensions for tcl, perl, and python are available.

Not without swapping widget trees in and out, which I don't think can be done cleanly with Tk. Other toolkits can do this a little more elegantly.
COM/VB/MFC can do this with an ActiveX control - you can hide/show multiple ActiveX controls in the same region. Any of the containers will let you do this by changing the child around. If you're doing a windows-specific program you may be able to accomplish it this way.
QT will also let you do this in a similar manner.
GTK is slightly harder.