How to include .txt on Qt

Payx

I tried something without you (sorry ahah)

QLabel abc;
abc.setPixmap(scaledPix);
abc.show();

it compiles but there is a error : QPixmap::scaled: Pixmap is a null pixmap

mrjj

@Payx said in How to include .txt on Qt:

scaledPix

Sounds like scaledPix is not initialize as it should , which often
comes from not being able to load a file.

Make sure the image you are scaling, is indeed valid. (loaded)

Payx

Before posting, i've tried to just

QPixmap pix(":/img/ballebleue.png")
ui->setPixmap .....

and it works

u said "scaledPix is not initialize as it should ?"

EDIT : Happy New Year !

mrjj

@Payx

Yes That would make the pix valid.

To get the error " Pixmap is a null pixmap" for scaledPix means that
it was not valid. It was empty. so if it came from a scale function, it means
that the image u scaled to get scaledPix was empty.

Happy new Year :)

Payx

					QLabel abc;
//          int Cost = ci.Cost;
					QPixmap pix( ci.ImageName );
					QPixmap scaledPix = pix.scaled(   8, 8,
																				 Qt::KeepAspectRatio,
																				 Qt::SmoothTransformation
																				 );
					abc.setPixmap(scaledPix);
					abc.show();

i have this :

so the error come from "QPixmap pix" who is empty

so the line "QPixmap pix( ci.ImageName );" dont create a pixmap from my QMap ?

mrjj

QPixmap pix( ci.ImageName );" dont create a pixmap from my QMap ?

That would be my guess yes.

You can check pix with isNull()

Payx

So i add the if :

					if (pix.isNull()){
					QPixmap pix(":/img/ballebleue.png");
					};

Same error as before "QPixmap::scaled: Pixmap is a null pixmap"

mrjj

@Payx said in How to include .txt on Qt:

if (pix.isNull()){
QPixmap pix(":/img/ballebleue.png");
};

Well that would not really change anything as you create a new local pix and its not related to the "pix" outside
You should find out if its invalid and then why it is

if (pix.isNull()){
qDebug() << "yep its no good";
return;
};

Payx

okay so i have that.

yep its no good
yep its no good
yep its no good
yep its no good
yep its no good
yep its no good
yep its no good
yep its no good
yep its no good
yep its no good
yep its no good
yep its no good
yep its no good
yep its no good
QImage::pixel: coordinate (144,540) out of range
QImage::pixel: coordinate (145,540) out of range
QImage::pixel: coordinate (146,540) out of range
QImage::pixel: coordinate (147,540) out of range
QImage::pixel: coordinate (148,540) out of range
QImage::pixel: coordinate (149,540) out of range
QImage::pixel: coordinate (150,540) out of range
QImage::pixel: coordinate (151,540) out of range
yep its no good
yep its no good
yep its no good
yep its no good
yep its no good
yep its no good
yep its no good
yep its no good
yep its no good
yep its no good
yep its no good
yep its no good
yep its no good
QImage::pixel: coordinate (168,540) out of range
QImage::pixel: coordinate (169,540) out of range
QImage::pixel: coordinate (170,540) out of range
QImage::pixel: coordinate (171,540) out of range
QImage::pixel: coordinate (172,540) out of range
QImage::pixel: coordinate (173,540) out of range
QImage::pixel: coordinate (174,540) out of range
QImage::pixel: coordinate (175,540) out of range
QImage::pixel: coordinate (168,541) out of range
QImage::pixel: coordinate (169,541) out of range
QImage::pixel: coordinate (170,541) out of range
QImage::pixel: coordinate (171,541) out of range
QImage::pixel: coordinate (172,541) out of range
QImage::pixel: coordinate (173,541) out of range
QImage::pixel: coordinate (174,541) out of range
QImage::pixel: coordinate (175,541) out of range
QImage::pixel: coordinate (168,542) out of range
QImage::pixel: coordinate (169,542) out of range
QImage::pixel: coordinate (170,542) out of range
QImage::pixel: coordinate (171,542) out of range
QImage::pixel: coordinate (172,542) out of range
QImage::pixel: coordinate (173,542) out of range
QImage::pixel: coordinate (174,542) out of range

that's mean that my pix is null right?

mrjj

@Payx
Yes this means that the pictures in the table cannot be loaded.
Are they in a resource ?

Payx

Yes i have that exactly :http://hpics.li/cc11b5c

mrjj

@Payx
Oh, they are under IMG

Right click one image file.
Find Get Path
should be something like

:/IMG/filename.xxx

Fix the names in the table.
As far as i recall they start like ":/filename.xxx" and that dont match.

alt text

Note: Here i do NOT have them in a sub folder like you have (img) so path is :/p1.png

Payx

QMap<QRgb, CostInfo > Costs = {
	{ QColor(255 , 0 , 0 ).rgb(), { ":/img/fraise.png", 10 }},
	{ QColor(0 , 255 , 0 ).rgb(), { ":/img/balleverte.png", 20 }},	
	{ QColor(0 , 0 , 255 ).rgb(), { ":/img/balebleue.png", 20 }},
	{ QColor(255 , 255 , 255 ).rgb(), { ":/img/balleblanche.png", 20 }},
	{ QColor(255 , 128 , 0 ).rgb(), { ":/img/ballepeche.png", 20 }},
	{ QColor(0 , 0 , 0 ).rgb(), { ":/img/noir.png", 20 }},
	{ QColor(102 , 51 , 0 ).rgb(), { ":/img/marron.png", 20 }},
	{ QColor(255 , 102 , 78 ).rgb(), { ":/img/rose.png", 20 }},
	{ QColor(0 , 204 , 204 ).rgb(), { ":/img/turquoise.png", 20 }},
	{ QColor(255 , 178 , 102 ).rgb(), { ":/img/beige.png", 20 }},
	{ QColor(76 , 0 , 153 ).rgb(), { ":/img/violet.png", 20 }},
	{ QColor(100 , 100 , 100 ).rgb(), { ":/img/gris.png", 20 }},
};

i didnt mention that but i had already changed the path

mrjj

@Payx
oh, it seems correct. You checked they are truly correct?

Please qDebug() << ci.ImageName to verify the variable contains the path from
the table.

just above where you try to make pixmap

qDebug() << "check me--->" << ci.ImageName;
QPixmap pix( ci.ImageName );

Payx

I have

check me---> ""

so there is nothing

i declared as QString ImageName
so maybe it is that ?

mrjj

@Payx
Not sure. check the code that look it up.
If from table it should not be empty :)

SGaist

Are you sure you are retrieving a valid value from your map ?

Payx

No it's sure that it's not a valid value !

QPixmap pix( ci.ImageName );

so it create a pix from a QString no ? that why it didnt work ?

SGaist

From what you wrote before, ci.ImageName is empty, correct ?

If so, check the key that you use to retrieve the data from the map. If not part of the map, depending on the technique used, you will get a default constructed object.

Payx

Yes it's empty.

			foreach( QRgb key, Costs.keys() ) {
				QColor BaseColor( key );
				if (Costs.contains( colour.rgb() ) || IsCloseColor(BaseColor, colour) )  {
					CostInfo& ci = Costs[colour.rgb()];
					QLabel abc;
//          int Cost = ci.Cost;
					qDebug() << "check me--->" << ci.ImageName;
					QPixmap pix( ci.ImageName );
					if (pix.isNull()){
					qDebug() << "yep its no good";
					return;
					};
					QPixmap scaledPix = pix.scaled(   8, 8,
																				 Qt::KeepAspectRatio,
																				 Qt::SmoothTransformation
																				 );
					abc.setPixmap(scaledPix);
					abc.show();

it's what i have.