Image content as variable »

[maurosanjo]

Hi there,

In the way LimeReport was designed the image can be static and also associated with a DataSoure.Field. But imagine we have a custom report in which we need to programatically change the company logo.
Is there any way?
If not, would be interesting if we could treat the image as a text field and set a Report Variable to it?

Congrats on the Report Designer tool, the best look'n feel and usability I found among Qt report solutions 
Regards

[Arin Alex]

Hi !
Thank you for your kind words to the LimeReport
You can use TextItem for printing images from application resources. To do this you should allowHtml in TextItem and specify the path to the resource like this <img source=":/report//images/pin"/>

[maurosanjo]

Hello,

Thanks. I tried that, its not as clean as what you did on your categories example. Using Image we can take advantage of scale, keepAspectRation, etc.

Something is strange, if I put a Image on Data Band and set Resource and Field on it, on the slot & signal mechanism I can set a QImage to data and it works fine. But if I put the Image on the group header, of footer, no matter if I put it on columnData or not, it gets fetched (more than once by the way) on the callback function but setting QImage to data (QVariant) does not work. Is it a bug or a limitation?

Regards

[Arin Alex]

Hi !

Thanks. I tried that, its not as clean as what you did on your categories example. Using Image we can take advantage of scale, keepAspectRation, etc.

I have added resourcePath property to ImageItem. From now you can use something like this ":report/images/pin" in this property

Something is strange, if I put a Image on Data Band and set Resource and Field on it, on the slot & signal mechanism I can set a QImage to data and it works fine. But if I put the Image on the group header, of footer, no matter if I put it on columnData or not, it gets fetched (more than once by the way) on the callback function but setting QImage to data (QVariant) does not work. Is it a bug or a limitation?

It's very strange I have tried to repeat that case but I didn't get same result.

I have used next callback slot :

Code: [Select]

void MainWindow::slotOneSlotDS(LimeReport::CallbackInfo info, QVariant &data)
{
    QStringList columns;
    columns << "Name" << "Value" << "Image";
    switch (info.dataType) {
            case LimeReport::CallbackInfo::RowCount:
                data = 4;
                break;
            case LimeReport::CallbackInfo::ColumnCount:
                data = columns.size();
                break;
            case LimeReport::CallbackInfo::IsEmpty:
                data = false;
                break;
            case LimeReport::CallbackInfo::ColumnHeaderData: {
                data = columns.at(info.index);
                break;
            }
            case LimeReport::CallbackInfo::ColumnData:
                if (info.columnName == "Image")
                    data = QImage(":/report//images/logo32");
                else {
                    data = info.columnName+" "+QString::number(info.index);
                }
                break;
            default: break;
        }
}

and attached report
and I got the result that you can see on the attached image

[вложение удалено администратором]

[maurosanjo]

Oh man, so sorry, it was a problem on my resource images. Indeed it is working Thanks

[cwl]

hi,could you give an example for this! thank you very much

[Arin Alex]

Hi!
What kind of example do you want? If you want to know how to use an image from the application resources here is an example: 
1. Allow HTML in TextItem
2. Put this sample string into the item content

Code: [Select]

<img source=":/report//images/pin" width="100" height="100" />3. Run the report

[cwl]

hi！Alex! thanks for your reply. Now i have another question, could current designer design a report that content text, table and image.

[Arin Alex]

cwl
Yes, it can.

[cwl]

Alex, thank you and your guys good job,thank you very much, and hope the project open source all the way.