I have two fairly large python apps using wx python for the gui. The menu bar seems to affect the display in a way that I cannot understand. In one, the menu bar appears on Show, but it pushes down the remaining controls, and the bottom ones are half off the screen. I.e. Fit() does not seem to take the menubar into account.
On the second I have a similar problem, but here the menu bar does not appear until the cursor is placed on the main panel. Then the menubar appears and pushes down the remaining controls.
I've tried to produce a skeleton screen that duplicates the problem, but I cannot, so I'm looking for pointers as to the possible cause of the problem. Can anyone suggest where to try to solve it?
Related
What's the best approach to mimic the Windows Explorer navigation bar in PyQt?. Perhaps a list of QComboBoxes as part of a parent class that concatenates the current item of each combo box to resolve the final path?
Is it possible to get a similar look by using stylesheets?
This is the object I need to mimic. I just want a theoretical approach about the best way to mimic it.
Thanks in advance
This is technically known as a breadcrumb widget.
There are multiple approaches to this. The closest emulation to Windows Explorer's behavior--leaving out the normally hidden line editor--involves a chain of widgets like so:
A top level parent QWidget-derived class with your implementation, which would have:
A QHBoxLayout
An arbitrary number of QComboBoxes
A QFileSystemModel from which to populate the combo boxes.
Alternatives
You could use a single QLabels with a series of hyperlinks divided by path separators if you don't care about drop-down behavior. Qt Creator does this.
If your data source is static and not as gigantic as the filesystem, you could use QToolButtons backed by a tree of QAction/QMenus. This is possibly a masochistic approach, given that you have to populate all of the actions and menus. Since that's what they are there for, though, it might be handy as part of a context-sensitive menubar or tab bar.
I was looking for such a widget too without any luck. So I've tried to implement this by myself. It's not finished yet and needs some more work, but here's the first result: breadcrumbsaddressbar.
It's based on QToolButton widgets with menu. Parts of address which don't fit are hidden like in Windows Explorer. Also the widget has auto-completion feature.
Update: there's also a C++ widget QtAddressBar which I have't tried.
I hope someone can help me out with this.
I have a pyqtgraph context menu and want to add my own Z-Axis. I can create a qlineedit widget but I am not able to create multiple widget on the same line in the context menu as show below (e.g. radio button and 2 text boxes on same line)
As a minimum I would like to achieve:-
Z Axis -> [input value], string, [input value]
I've had a look in qmenu but couldn't find what I needed. Anyone know how to achieve this.
Also if anyone knows how to change the size of the X Axis qlineedit boxes and make them bigger it would be great as they are a bit squashed as you can see.
Someone on a different forum was able to help me with the answer so I thought I would also post it here for future users.
What you have to do is go into the site-packages for python and find pyqtgraph/graphicsItems/ViewBox/. In there are several files called
axisCtrlTemplate_*.py
A couple of lines down in the ui_form is the following line which you just need to increase the width (e.g. 450)
Form.setMaximumSize(QtCore.QSize(450, 16777215))
Hey presto fixed.
Also in the same location is a file called
ViewBoxMenu.py
you can see how the context menu is written here and I will use this information to create my min and max values which are created in a ui (qtdesigner) and then added to the menu
I am using LWUIT for series 40 for making my J2ME app and I have noticed a strange behavior of the LWUIT-Dialog while using the showPacked() method, the dialog being positioned with BorderLayout.CENTER.
This happens especially in touch phones.
I have attached an image in order to describe my situation.
Initially the dialog appears as shown in the first part of the image.However,it expands in the next few seconds to become like the one shown in the second part of the image.
Future calls to display the dialog using showPacked appears like the third one.I am clueless as to why this is happening.I want my dialog to appear like the one shown in the first half of the image all the time.Where have I gone wrong?
Note : The content of the Dialog is a an animated label.
I have no idea what the guys did there but I'm guessing they reflow the UI too aggressively. Try setting Dialog.setAutoAdjustDialogSize(false) and see if it solves your problem.
You can remove the title and background et al. with the code below, it makes only your animated GIF show with the dimmed dialog background :
setTitle(" ");
setUIID("Null");
setDialogUIID("Null");
getStyle().setBgTransparency(0);
getSelectedStyle().setBgTransparency(0);
getUnselectedStyle().setBgTransparency(0);
getPressedStyle().setBgTransparency(0);
getDialogStyle().setBgTransparency(0);
I have an interesting (but frustraring) problem. I have an application which uses the full screen (this is meant to simulate a third-party fullscreen POS application).
My application displays a sequence of modeless dialog boxes on top of the full screen application. It shows one, hides it, then shows the next, hides it etc. After the 3rd show, the Windows taskbar appears about 1 second later. I can't figure out why.
I've stripped my code right back to see if its something I'm doing in my OnNcActivate handler (which I use to draw my skinned window) but I don't think it is as the problem appears to be timing related. I've tried running Spy++ as well as dumping messages in m WindowProc myself and I still can't see anything odd that would give me any clues.
There are some messages with ID 0x36e in my logs but I can't find out what they are supposed to be. I've checked various message ID lists and can't find them. They shouldn't be any message IDs of my own since WM_USER doesn't start until 0x400.
I know I could get around this problem by auto-hiding the taskbar but I can't ask our customers to configure their taskbars to auto-hide to get round my problem.
Any ideas why the taskbar would appear in relation to my modeless dialog boxes?
EDIT: I completely stripped out my self-drawn GUI code and I still have the same problem. I could be wrong but it would seem that when I call ShowWindow( SW_HIDE) first, Windows tries to activate "another Window" (as it says in MSDN). I think in this case its activating the taskbar rather than the POS application. If on the other hand I open my second window before calling ShowWindow( SW_HIDE ) on the second, then it seems to behave itself.
Cheers
Sparky
Following a long discussion I come to the conclusion that DestroyWindow was not the problem. I found in the end that displaying a dialog.. clicking on the POS, then clicking back on the dialog that sometimes the taskbar would appear. I have spent an entire week trying to find reasons for all of this but to no avail. I thought that assigning the POS window as the owner would solve the problem - it didn't. In the end the solution for my problem was to determine if the taskbar is obscured completely before showing my dialog. If it is, I hide the taskbar for the duration which my dialog is displayed (set its placement to SW_HIDE) and then set it to SW_SHOW when I close my dialog. The task bar doesn't pop up and annoy people anymore. Not a fantastic solution for other peoples' applications perhaps, but perfect for our customers.
I need to create a magnifier like feature in my app. Like the "loupe" effect on the iphone !
The problem is that I need to do that inside a popup window and I don't get how to make it work !
The popup window display a grid of colors that I generate and draw one by one using shapeDrawables. What I want is to display that color bigger, zoom on it when the user touch and move his finger around the popup window (color grid). The idea is to create a tracking-zooming effect on the colors so the user can see more clearly under wich color his finger is currently located.
Problems are :
I can't seem to create another popup window on top of this one, Android limitation I think ?
If I modify the current shapeDrawable, resize it, change the boundaries, It needs to re-display the popup window before it takes effect (which is not acceptable of course)
So, anyone knows of a way I could draw over that popup window ?
EDIT :
I've tried solving this issue using a Custom Toast object...But it doesn't quite do the trick. It works, but toast object appears slowly and so the touch motion is not in sync at all with the user movement over the color grid.
I'm not sure if this will help you or not, but you might be able to accomplish this by using a second Activity... this second Activity would use Android's translucent theme if you include the following attribute in your manifest:
<activity android:theme="#android:style/Theme.Translucent">
This second activity will now only contain what you place in your layout. That is... the "real" activity you're running will still be visible behind it (anywhere you don't cover it up with views in the new layout).
You also might prefer Theme.Dialog if you really want to resemble a popup.
Something to keep in mind if you take this approach is you will probably want to override onWindowFocusChanged() in the new activity, and finish() in the event of you losing focus. Additionally, you'll need to figure out how to share your data between the two activities.