Is there a widget usable in Python with tkinter, which is a scrollbar with resizable slider? This makes sense e.g. when displaying something in graphical format to pan (moving the slider) and zoom (resizing the slider) with the same widget.
In a waveform viewer from Cadence it looks like this:
You can resize the handle using the little triangles or just grabbing the left or right edge of the handle with the mouse.
No, there is nothing like that in tkinter. Tkinter provides the basic building blocks, however. You could probably craft one using frames or a canvas.
Related
What is the difference between a Frame and Canvas in tkinter? I'm a beginner in tkinter, and I don't really see any difference between the two... I've been using them interchangeably. Are they the same or is there some sort of internal or external difference?
A Frame is designed to be a container for other widgets. It really doesn't do anything but provide a border and color, and to collect a set of widgets into a logical group.
A Canvas is something that can act as a container for other widgets (as can just about any widget), but it also has features that let you draw circles, lines, rectangles, and other objects on it.
A Canvas can also be scrolled, whereas a frame cannot.
I am trying to make a GUI that is very similar to Spotify using PyQT
I've already designed the main window and I am struggling with applying the design to QT Creator.
This is what I want it to look like
But I'm trying to use Layouts in order to organize every widget.
For example
Image of the main window, split into 3 parts
like in the sketch I've made the software will be split into 3 parts, left bar, mid which is where the explore title is and right bar.
The problem I have is that I can't control the layouts size and the size of what's below them for example in the sketch the mid bar is wider than the right bar and the right bar is wider than the left bar but in the QTCreator I've no idea how to change the width and height of objects inside Layouts.
The first option (which I personally prefer) is to fill your layout with it's contents first (buttons, labels, etc.). This will already start to scale your layout, if there are more buttons in the middle bar than on the other bars. If your layout still isn't what you want it to be, you can use Spacers. They can push and pull puttons and position the in relation to other parts of the layout, as well as to the layout itself. The scaling will be adjusted automatically according to the spacers position.
This option has the advantage, that your application will be correctly scaled and not completely chaotic when it is run on a device with a display aspect ratio which is not the same as the one of the machine your developing it on.
There is, however, also a minimumSize and maximumSize attribute to the layouts, which provide a much more straightforward possibility, but sometimes cause your layouts to become very weird when adding or removing a button, or changing the text of a label. More on this option can be found in the Qt docs:
https://doc.qt.io/qt-5/qlayout.html
Is it possible that when a Tkinter window is made bigger or larger, everyhting in the window is scaled?
So all the proportions stay the same but their sizes vary.
Now when the window is resized all the buttons etc stay the same so I disabled resize because there is no point, it just looks bad.
No, it is likely not possible, depending on what you mean by "everything" and what you mean by "scaled". Any widget can be made to stretch to fill its allotted space. Text widgets and canvas widgets, for example, scale nicely. A button or label will fill the space it's in, but the text inside the widget won't change (that is also true of text and canvas widgets).
It's possible to organize your GUI so that when the window resizes, everything remains in its proper place at its original size. Having buttons that automatically scale is not something most people would expect. Disabling resizing usually results in a poor user experience -- users should have the ability to make a window larger or smaller.
I am creating a Solitaire clone using Python's Tkinter window toolkit. My window contains a main canvas, and within the main canvas a series of widgets that inherit from Canvas that hold the cards. I have implemented a "Drag to Move" system where a user can click the mouse down to select a card in one of the inner canvases, drag it to a new canvas, and let go to place the card into the receiving canvas.
The Problem: I want to draw the cards in motion between the canvas on which they are drawn, and the canvas they are moving to, so the user can see them moving across the screen during the click and drag motion. When I try to draw cards in-between the canvases that I already have, they are always drawn behind, meaning I can only see cards through the padding around the inner canvases.
Here is an example where I drew several of them so the effect could be seen clearly, and the inner canvases are also clearly visible.
What I've Tried: I've tried to move the canvases back using Misc.lower(aCanvas), but i wasn't able to create the desired effect. I've also tried to design a custom overridden cursor, but it seems my cursor size is limited to 32px*32px, which is insufficient for the size of the card images I want to move.
My Question: How can I draw on top of a canvas that is inside of another canvas? If I can't, how would you solve this problem?
You cannot do what you want. Embedded widgets are always above the canvas items.
Why is it that you are embedding canvases insidebcanvases? Why not just use a single canvas?
I am drawing inside a wx.Window using a PaintDC. I am drawing circles and stuff like that into that window. Problem is, sometimes the circles go outside the scope of the window. I want a scrollbar to automatically appear whenever the drawing gets too big. What do I do?
Use a wx.ScrolledWindow and set the size of the window as soon as your 'drawing go outside' the window with
SetVirtualSize(width,height)
If this size is bigger than the client size, then wx will show scrollbars. When drawing in the window make sure to use CalcUnscrolledPosition and CalcScrolledPosition
Here you can find some more information.