I'm working on a PyQt4 GUI. My issue is that it looks very different when I run the code from windows or linux. I think the main reason is the difference in default font size between platforms. With that in mind, I wanted to change the font size of the pyqtgraph's ParameterTree. How can I do that?
If you have a more general answer that could help solving all the differences, it would be greatly appreciated.
Related
All my fonts are appearing pixelated, so I used AntiAliasing but it isn't helping out. As you can see the pixelated font in the image itself:
This is the code I am currently using:
butt1 = QtWidgets.QLabel("""Scrappr""")
font = QtGui.QFont()
font.setStyleStrategy(QtGui.QFont.PreferAntialias)
font.setPixelSize(22)
font.setFamily('Segoe UI Bold')
butt1.setFont(QtGui.QFont(font))
I tried different solutions on SO, qtforums etc but nothing works for me :(
I tried:
Different combinations of ClearType text but It didn't work out as, by default all the text appears good on windows and chrome but with Qt only, it becomes pixelated.
Changing windows aero theme to classic one...
But none of them helped.
Here are My PC Specs:
windows: 7 ultimate
PySide2 version: 5.14.2.1
Resolution: 1360 X 768
I'm using BrownPro font and the texts were blurry at all resolutions, but much more evident at low resolutions.
I was able to solve the issue by setting the hinting preference for the font to: PreferNoHinting. Applying it at the application level, fixes the issue everywhere.
Here is the documentation: https://doc.qt.io/qt-5/qfont.html#HintingPreference-enum
And here is the code I used:
QFontDatabase::addApplicationFont(":/fonts/BrownPro-Bold.ttf");
QFontDatabase::addApplicationFont(":/fonts/BrownPro-Regular.ttf");
QFontDatabase::addApplicationFont(":/fonts/BrownPro-Light.ttf");
QFont brown_pro_font("BrownPro");
brown_pro_font.setHintingPreference(QFont::HintingPreference::PreferNoHinting); //This line did the trick
QApplication::setFont(brown_pro_font);
Try to see the fonts used by PyQt5:
import PyQt5
from pyQt5 import QtGui
dir(QtGui.QFont)
the result will show all you need for QFond and the fonts can be used:
[..., 'Helvetica',...,'SansSerif',..., 'Serif',..., 'Times', ...
You can try to add your custom fonts but you need to test each font.
For example, the documentation tells us:
In Windows a request for the “Courier” font is automatically changed to “Courier New”, an improved version of Courier that allows for smooth scaling. The older “Courier” bitmap font can be selected by setting the PreferBitmap style strategy (see setStyleStrategy() ).
Once a font is found, the remaining attributes are matched in order of priority:
fixedPitch()
pointSize() (see below)
weight()
style()
I happen to work with Qt last year and i used qml for building the UI part of my application.
Qt itself prefers us to use qml for building UI, since they have written a UI engine that renders everything better compared to the old engines.
In case of PyQt you are using the python only approach which is only not usually recommended, i am not saying that the qml version is pixel perfect. it still works bad at drawing curves (but that is not the stuff we usually require). As far as your problem is concerned qml will work fine for you (it has much better text rendering).
You might struggle a bit finding the learning resource for qml. But at least give it a shot and yes it is easier much easier than Python only approach.
I am new to Linux. I am running Linux in surface pro 6, the display resolution and everything is good except Paraview. I tried to change some settings in ParaView and font size was better now but the icons in the GUI were too small. I came through some posts in the Gitlab, but none of them is clear to a newbie. Can someone help me with this with a clear solution, please?
Thanks in advance.enter image description here
By Mathieu Westphal
Bug in Qt, work around is : QT_AUTO_SCREEN_SCALE_FACTOR=0 ./bin/paraview
https://gitlab.kitware.com/paraview/paraview/issues/19751
I wrote a GUI for my desktop a while ago and have just tried to run it on a surface pro 3 only to find the fonts are all exceeding their bounding boxes. Labels are exceeding the worst. Disabling the bold attribute helps when it comes to buttons but not by much.
I have checked to make sure the chosen fonts are compatible for both devices.
Has anyone else encountered this issue and know of a fix for it?
Thanks,
I was wondering how to set text size in OCaml.
I tried Graphics.set_text_size which should do the deal I guess.
But whether I put set_text_size 200 or set_text_size 20 doesn't change a thing…
Graphics.set_text_size is not implemented yet.
https://github.com/ocaml/graphics/blob/5.1.2/src/graphics.ml#L200
https://github.com/ocaml/graphics/blob/5.1.2/src/unix/text.c#L38
https://github.com/ocaml/graphics/blob/5.1.2/src/win32/draw.c#L343
maybe for now, Graphics.set_text_size is not implemented yet.
But, you can use: set_font
set_font "-misc-dejavu sans mono-bold-r-normal--256-0-0-0-m-0-iso8859-1";
this can set font size
There are small lines appearing sometimes in front of words. In the pictures they are to the right of +syntax/ and swo and delmenu.vim.
Is this a bug or those lines mean something?
Do this happened to you before?
Would they get worse in the future?
PS: I'm using Microsoft Windows XP SP2 AMD
alt text http://img97.imageshack.us/img97/7673/picpd.jpg
EDIT: I change the font to Consolas and they disappeared. Is there a way to solve the problem while still using my favorite font, Monaco (and not turning off Cleartype)?
This is caused by cleartype font smoothing.
If you use a fixed font for gvim the problem goes away (.fon files). ttf files contain font smoothing information which gets messed up in gvim.
fixedsys renders well. There are a bunch of other ones that also work well.
An alternative is to turn off font smoothing altogher using the display properties, but that will have undesirable effects on all other applications.
This does indeed look like a rendering bug. You should report it to the gvim team. But you should also never use jpegs for screen shots - the compression doesn't work nearly as well as pngs, and could potentially introduce distortion in shots exactly like this one.
Just a guess, but it may be related to the font you are using. Maybe you could try to change it to see if these lines still appear, or disappear, or move to other lines ...