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List: pykde
Subject: Re: [PyQt] Amharic text and QtLineEdit
From: "Timothy W. Grove" <tim_grove () sil ! org>
Date: 2018-03-14 8:40:12
Message-ID: 971821cd-01e1-793e-b6e6-aa63fe41a002 () sil ! org
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Hello Zachary,
Thank you for your reply and for your solution; it works great! The only
amendment to your quick test needed was to create a QFont object first
and then set it:
f = QFont('Kefa')
le.setFont(f)
Best regards,
Tim
On 14/03/2018 00:09, Zachary Scheuren wrote:
> Hi Tim,
>
> I've had this problem before when trying to support multiple scripts
> and customize them in different ways. In your example since the
> QLineEdit isn't getting an appropriate font you can do it by
> explicitly setting a font or setting up appropriate styles for
> fallback, etc as explained at https://doc.qt.io/qt-5/qfont.html
> <https://doc.qt.io/qt-5/qfont.html>
>
> For a quick test on macOS I added
>
> le.setFont('Kefa')
>
> and that forced the QLineEdit to use the installed Kefa font. I also
> tried with 'Noto Sans Ethiopic' and that worked, too.
> It does seem like a bug that the font matching algorithm fails to find
> a suitable font when you know one exists, but I always just set it
> myself or gave users the option to use whatever font they wanted.
>
> Hope that helps.
>
> Zachary
>
>
> On Tue, Mar 13, 2018 at 9:31 AM, Timothy W. Grove <tim_grove@sil.org
> <mailto:tim_grove@sil.org>> wrote:
>
> Has anyone ever had trouble displaying Amharic text in a
> QLineEdit, or had similar issues with other scripts to what I'm
> describing below?
>
> When typing Amharic text into a QLineEdit on MacOS I'm not seeing
> the expected text but blocks of horizontal lines in place of each
> character. If I copy those blocks and paste them into some other
> (non-pyqt) application the Amharic text appears. Conversely, if I
> type well-formed Amharic text in another application and
> copy-and-paste that back into my pyqt application, only those
> blocks of lines appear.
>
> Something similar happens under Windows. (I can't repeat this
> myself, but it's reported by another user) When Amharic is typed
> blank spaces appear, like typing white text onto a white
> background. Again, the same results as above for copying and pasting.
>
> My input method for MacOS is Keyman with SIL-Ethiopic
> (https://keyman.com/macos/).
>
> I made a simple example below which only uses a dialog containing
> one QLineInput, where the problem can be seen.
>
> /from PyQt5.QtWidgets import QDialog, QApplication, QLineEdit//
> //
> //class TestDlg(QDialog)://
> // def __init__(self): //
> // super(TestDlg, self).__init__()//
> // le = QLineEdit(self)//
> ////
> //app = QApplication([]) //
> //dlg = TestDlg()//
> //if dlg.exec_()://
> // pass////
> //app.exec_()/
>
> /
> /
>
> Not much to go on, but I'm hoping that someone somewhere has seen
> something like this before.
>
> Best regards,
> Tim
>
>
> _______________________________________________
> PyQt mailing list PyQt@riverbankcomputing.com
> <mailto:PyQt@riverbankcomputing.com>
> https://www.riverbankcomputing.com/mailman/listinfo/pyqt
> <https://www.riverbankcomputing.com/mailman/listinfo/pyqt>
>
>
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<p>Hello Zachary,</p>
<p>Thank you for your reply and for your solution; it works great!
The only amendment to your quick test needed was to create a QFont
object first and then set it:</p>
<p>f = QFont('Kefa')<br>
le.setFont(f)</p>
<p>Best regards,</p>
<p>Tim<br>
</p>
<br>
<div class="moz-cite-prefix">On 14/03/2018 00:09, Zachary Scheuren
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAFBf+HdzdeQLDZfgM757nF6U4PWLE_iGXbwX-MXuVOFqiEJKjg@mail.gmail.com">
<div dir="ltr"><span
style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:no \
rmal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spa \
cing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;wo \
rd-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">Hi
Tim,</span>
<div
style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:no \
rmal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spa \
cing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;wo \
rd-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><br>
</div>
<div
style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:no \
rmal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spa \
cing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;wo \
rd-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">I've
had this problem before when trying to support multiple
scripts and customize them in different ways. In your example
since the QLineEdit isn't getting an appropriate font you can
do it by explicitly setting a font or setting up appropriate
styles for fallback, etc as explained at <a
href="https://doc.qt.io/qt-5/qfont.html" target="_blank"
style="color:rgb(17,85,204)" \
moz-do-not-send="true">https://doc.qt.io/qt-5/<wbr>qfont.html</a></div> <div
style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:no \
rmal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spa \
cing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;wo \
rd-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><br>
<div>For a quick test on macOS I added</div>
<div><br>
</div>
<div>le.setFont('Kefa') </div>
<div><br>
</div>
<div>and that forced the QLineEdit to use the installed Kefa
font. I also tried with 'Noto Sans Ethiopic' and that
worked, too. </div>
<div>It does seem like a bug that the font matching algorithm
fails to find a suitable font when you know one exists, but
I always just set it myself or gave users the option to use
whatever font they wanted.</div>
<div><br>
</div>
<div>Hope that helps.</div>
<div><br>
</div>
<div>Zachary</div>
</div>
<br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Tue, Mar 13, 2018 at 9:31 AM,
Timothy W. Grove <span dir="ltr"><<a
href="mailto:tim_grove@sil.org" target="_blank"
moz-do-not-send="true">tim_grove@sil.org</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<p>Has anyone ever had trouble displaying Amharic text in
a QLineEdit, or had similar issues with other scripts to
what I'm describing below?</p>
<p>When typing Amharic text into a QLineEdit on MacOS I'm
not seeing the expected text but blocks of horizontal
lines in place of each character. If I copy those blocks
and paste them into some other (non-pyqt) application
the Amharic text appears. Conversely, if I type
well-formed Amharic text in another application and
copy-and-paste that back into my pyqt application, only
those blocks of lines appear. <br>
</p>
<p>Something similar happens under Windows. (I can't
repeat this myself, but it's reported by another user)
When Amharic is typed blank spaces appear, like typing
white text onto a white background. Again, the same
results as above for copying and pasting.</p>
<p>My input method for MacOS is Keyman with SIL-Ethiopic (<a
class="m_4022434960405102886moz-txt-link-freetext"
href="https://keyman.com/macos/" target="_blank"
moz-do-not-send="true">https://keyman.com/macos/</a>).
<br>
</p>
<p>I made a simple example below which only uses a dialog
containing one QLineInput, where the problem can be
seen.<br>
</p>
<blockquote>
<p><font size="-2"><i>from PyQt5.QtWidgets import
QDialog, QApplication, QLineEdit</i><i><br>
</i><i><br>
</i><i>class TestDlg(QDialog):</i><i><br>
</i><i> def __init__(self): </i><i><br>
</i><i> super(TestDlg, self).__init__()</i><i><br>
</i><i> le = QLineEdit(self)</i><i><br>
</i><i> </i><i><br>
</i><i>app = QApplication([]) </i><i><br>
</i><i>dlg = TestDlg()</i><i><br>
</i><i>if dlg.exec_():</i><i><br>
</i><i> pass</i><i> </i><i><br>
</i><i>app.exec_()</i></font></p>
<p><font size="-2"><i><br>
</i></font></p>
</blockquote>
<p>Not much to go on, but I'm hoping that someone
somewhere has seen something like this before.</p>
<p>Best regards,<br>
Tim<br>
</p>
</div>
<br>
______________________________<wbr>_________________<br>
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href="mailto:PyQt@riverbankcomputing.com"
moz-do-not-send="true">PyQt@riverbankcomputing.com</a><br>
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href="https://www.riverbankcomputing.com/mailman/listinfo/pyqt"
rel="noreferrer" target="_blank" \
moz-do-not-send="true">https://www.<wbr>riverbankcomputing.com/<wbr>mailman/listinfo/pyqt</a><br>
</blockquote>
</div>
<br>
</div>
</blockquote>
<br>
</body>
</html>
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