[SOLVED] Reading QColor from an INI file

astodolski

[quote author="Subst27" date="1421077934"]why?

really possible.

you can read value as string and then analyze it whith RegExp

[/quote]

As string? Didn't consider that. OK. I'll try that

Subst27

MarkerColor= #00000080

It seems the obvious and the apply the toHex()

Subst27

whith the string like QColor(R,G,B)

you can remove QColor and brackets and then whis split(",") take the Red,Green and Blue values of your color

astodolski

[quote author="Subst27" date="1421078199"]MarkerColor= #00000080

It seems the obvious and the apply the toHex()[/quote]

toHex() isn't available in this context.

Subst27

try to remove # sign

it's issuer of syntax

from Assistant

QByteArray QByteArray::toHex() const

Returns a hex encoded copy of the byte array. The hex encoding uses the numbers 0-9 and the letters a-f.

astodolski

[quote author="Subst27" date="1421078846"]try to remove # sign

it's issuer of syntax

from Assistant

QByteArray QByteArray::toHex() const

Returns a hex encoded copy of the byte array. The hex encoding uses the numbers 0-9 and the letters a-f.
[/quote]

It is unclear what you are trying to illustrate.

Perhaps a trivial example?

Subst27

can you wait some minutes?

astodolski

[quote author="Subst27" date="1421079781"]can you wait some minutes?[/quote]

Of course

Subst27

I found better variant

in INI

[common]
color=#FF0000

result

"#FF0000"
16711680
QColor(ARGB 1, 1, 0, 0)

look code in next message

Subst27

@QSettings settings(qApp->applicationDirPath()+"/color.ini",QSettings::IniFormat);

QColor color;
settings.beginGroup("common");
QString string=settings.value("color","#0000FF").toString();
qDebug()<<string;
string.remove(0,1);
bool ok;
uint value=string.toUInt(&ok,16);
qDebug()<<value;
color=QColor::fromRgb(value);
qDebug()<<color;@

andre

I'd add a bit more checking of the input. Before removing the first character, check if it actually is a # sign. And check if the length of the rest is what you expect (6 characters for a 3x8bit color).

Subst27

[quote author="Andre" date="1421081171"]I'd add a bit more checking of the input. Before removing the first character, check if it actually is a # sign. And check if the length of the rest is what you expect (6 characters for a 3x8bit color).[/quote]

well.
I've just wrote the principal solve

astodolski

[quote author="Andre" date="1421081171"]I'd add a bit more checking of the input. Before removing the first character, check if it actually is a # sign. And check if the length of the rest is what you expect (6 characters for a 3x8bit color).[/quote]

Thanks as always @Andre and especially thanks to @Subst27! I will mark this Solved for now but will need to refine it a bit

andre

[quote author="Subst27" date="1421081450"]
[quote author="Andre" date="1421081171"]I'd add a bit more checking of the input. Before removing the first character, check if it actually is a # sign. And check if the length of the rest is what you expect (6 characters for a 3x8bit color).[/quote]

well.
I've just wrote the principal solve[/quote]

Yes, of course. But reading an ini file is essentially user imput, so I think input checking should not be just an afterthought. That's why I mentioned it.

Subst27

sure u are right

for this purpose global better to define T QVariant::value() const for QColor
:)
and problem die away. :)

Well! I see you

astodolski

I just wanted to add what I think is a better solution - at least for me. The issue was centered around the proper forming of the key in the input file which if not done correctly yielded a Invalid color status for the QColor. I went back to reading the value in as a number - not a string.

@
[Testing]
MarkerColor=#800000
@

and in code:
@
m_MarkerColor = IniSettings.value("Testing/MarkerColor").value<QColor>();
@

Sincere thanks to all who have assisted and contributed.