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2014-04-05
, 08:48
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Posts: 2,290 |
Thanked: 4,133 times |
Joined on Apr 2010
@ UK
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#12
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Originally Posted by pichlo
That would be good, the code for the 4 band resistors is in C and should be solid.
Thanks for bringing my attention to this thread.
Looks easy. Let me have a look. I can send you my updates by email.
I couldn't get 5 band resistors to work so I scrapped that for now.
It's the other calculators that are a bit sketchy.
If someone wants to help me get the code working, tidying up the UI with your suggestions should be a breeze.
The idea behind the multiple lineEdit's was so you could input any two values and receive an answer. However, I couldn't get this to work so that spawned the tabgroupbox, which I don't like TBH.
The colo(u)r's are Qt:Red and Qt:Blue etc IIRC, this is the simplest method to add colour in Qt but could be modified.
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2014-04-05
, 13:00
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Posts: 6,445 |
Thanked: 20,981 times |
Joined on Sep 2012
@ UK
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#13
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Sorry, a lot's been going on in my personal life in the past couple of weeks and all hobby development had to take a break. Having said that, I've had a look at your code and found it so easy to tweak that I got carried away and took a more adventurous approach with a big redesign which is not finished yet. Here is a taster (just a mock up for now) of what I came up with. Treat it as work in pogress, the final UI may look a bit different. I would also welcome any feedback to see if people think this is a way forward or better to scrap it and stay with the current design.
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Русский военный корабль, иди нахуй!
Русский военный корабль, иди нахуй!
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2014-04-05
, 16:32
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Posts: 6,445 |
Thanked: 20,981 times |
Joined on Sep 2012
@ UK
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#14
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A silly question, but does anyone know how to make Qt controls display characters like μ and Ω? Particularly QComboBox, if that makes any difference. When I just paste the characters in the source, rebuild and run the app, I get ̼A and k̩ intead of μA and kΩ.
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Русский военный корабль, иди нахуй!
Русский военный корабль, иди нахуй!
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2014-04-05
, 16:56
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Posts: 203 |
Thanked: 445 times |
Joined on Mar 2010
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#15
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Have you saved the source as UTF-8? I'd imagine that should be enough.
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2014-04-05
, 17:54
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Posts: 1,417 |
Thanked: 2,619 times |
Joined on Jan 2011
@ Touring
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#16
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Outside of the scope of this app, but if you could find a searchable DB of chip and transistor codes that would be great to have offline searchable.
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2014-04-05
, 18:27
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Posts: 6,445 |
Thanked: 20,981 times |
Joined on Sep 2012
@ UK
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#17
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Originally Posted by foobar
How does that help? The characters show OK in the source (in Leafpad).
Have you saved the source as UTF-8? I'd imagine that should be enough.
They show muddled up in the compiled app, like this:
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Русский военный корабль, иди нахуй!
Русский военный корабль, иди нахуй!
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2014-04-05
, 18:52
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Posts: 203 |
Thanked: 445 times |
Joined on Mar 2010
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#18
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Originally Posted by pichlo
As far as I know, Qt by default works with/expects stuff to be UTF-8-encoded.
How does that help? The characters show OK in the source (in Leafpad).
They show muddled up in the compiled app, like this:
If the output doesn't match what you put in the source then either Qt is set to expect something else, or your input is not UTF-8.
That said, leafpad seems to save UTF-8-encoded by default, so I'm at a loss.
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2014-04-05
, 18:54
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Posts: 1,986 |
Thanked: 7,698 times |
Joined on Dec 2010
@ Dayton, Ohio
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#19
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Originally Posted by pichlo
If at all possible, I prefer to avoid direct use of non-ascii characters in source code.
A silly question, but does anyone know how to make Qt controls display characters like μ and Ω? Particularly QComboBox, if that makes any difference. When I just paste the characters in the source, rebuild and run the app, I get ̼A and k̩ intead of μA and kΩ.
(Even though that's getting to be a tough proposition these days...) Anyway, if you don't need to use too many characters, it isn't too hard to specify their Unicode values in a QChar object.Ok, I've just thrown together a little bit of test code (into my Lanterne project), adding a few new lines to a QComboBox. The Unicode value for the Ohm character appears to be 0x2126, and for the "Micro Sign" appears to be 0xB5. Here's the code I put together for it:
Code:
QString testString("Test of ohm char: ");
testString += QChar(0x2126);
ui->indicatorBrightnessComboBox->addItem(testString);
QString testString2("Test of mu char: ");
testString2 += QChar(0x00B5);
ui->indicatorBrightnessComboBox->addItem(testString2);
Edit: yeah, it does look like Qt prefers pure ascii source files, as described in this article:
Occasionally it seems the simplest solution is just to insert those strings in their native form in the sources - this is unfortunately rarely a good solution. While the strings might look correct in an editor, the compiler and target platform might interpret them differently. The recommendation is thus to *always* avoid putting non-ASCII string is the sources.
Last edited by Copernicus; 2014-04-05 at 19:10. Reason: more info on ascii source files
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2014-04-06
, 06:42
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Posts: 6,445 |
Thanked: 20,981 times |
Joined on Sep 2012
@ UK
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#20
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Thanks, Copernicus. After I've finally RTFM, I've found a solution that seems to work:
However your solution looks safer so I think I'll go that way.
Code:
static void initMultipliersResistance(QComboBox *qcb)
{
qcb->clear();
qcb->addItem(QString::fromUtf8("Ω"), 1);
qcb->addItem(QString::fromUtf8("kΩ"), 1e3);
qcb->addItem(QString::fromUtf8("MΩ"), 1e6);
qcb->addItem(QString::fromUtf8("GΩ"), 1e9);
qcb->addItem(QString::fromUtf8("TΩ"), 1e12);
qcb->setCurrentIndex(0);
}
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Русский военный корабль, иди нахуй!
Русский военный корабль, иди нахуй!
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IDK how easy/hard the above would be to code in GUi, though.
/Estel
// Edit
This way, instead of different main menu items for law and power, we could have one "calculations" menu item, and specific calculations could be shown as tabs (instead of current tabs for "what you want to get as a result"). So we would have Ohm's law tab, power tab, etc...
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