[prev in list] [next in list] [prev in thread] [next in thread] 

List:       calligra-devel
Subject:    Re: Question about show view of calligra tables
From:       Boudewijn Rempt <boud () valdyas ! org>
Date:       2011-03-16 7:13:24
Message-ID: 201103160813.24450.boud () valdyas ! org
[Download RAW message or body]

On Friday 11 March 2011 Mar, tien dh wrote:
> Hi every one,
> Please help me on that problem, it's so difficult for me to solve:
> 
> int main(int argc, char** argv){    QApplication qapp(argc, argv);
> KComponentData cd("graphicsview-test");    Calligra::Tables::Doc doc;
> bool ok = doc.*openUrl*(KUrl("/home/excel_samples/Cash_Flow_Projection_Worksheet.xls"));
>  if (!ok) {        qDebug() << "failed to load";        return 0;
> }    QFont font(KoGlobal::defaultFont());
> Calligra::Tables::CanvasItem* canvas = new
> Calligra::Tables::CanvasItem(&doc);    QRect usedArea =
> canvas->*activeSheet*()->usedArea(true);    QSizeF
> size(canvas->*activeSheet*()->columnPosition(usedArea.right()+3),
> canvas->*activeSheet*()->rowPosition(usedArea.bottom()+5));
> canvas->setDocumentSize(size);    size =
> canvas->*zoomHandler*()->*documentToView*(size);
> canvas->resize(size);    canvas->setPos(0, 0);
> Calligra::Tables::ColumnHeaderItem* columnHeader =
> static_cast<Calligra::Tables::ColumnHeaderItem*>(canvas->*columnHeader*());
> static_cast<QGraphicsWidget*>(columnHeader)->resize(size.width(),
> canvas->*zoomHandler*()->zoomItY(font.pointSizeF() + 3));
> columnHeader->setPos(0, -columnHeader->height());
> Calligra::Tables::RowHeaderItem* rowHeader =
> static_cast<Calligra::Tables::RowHeaderItem*>(canvas->*rowHeader*());
> static_cast<QGraphicsWidget*>(rowHeader)->resize(canvas->*zoomHandler*()->zoomItX(YBORDER_WIDTH),
>  size.height());    rowHeader->setPos(-rowHeader->width(), 0);
> columnHeader->toolChanged("PanTool");
> rowHeader->toolChanged("PanTool");        QGraphicsScene scene;
> scene.addItem(canvas);    scene.addItem(columnHeader);
> scene.addItem(rowHeader);    QGraphicsView view(&scene);
> view.show();    qapp.exec();}
> 
> 
> This portion of code can run and show a excel file. But when I try using
> function: doc.createView().show, only tabbars and scrollbars shown. Sheet
> area is completely black. I try using canvas, canvasWidget and
> canvasController but it isn't successful.
> Anyone can show me why it is and how to render the view to an image ?

Hi Tien,

I'm not completely sure what you're tring to do here -- the mail came across a bit \
garbled. It looks like you're using the graphicsitem canvas, and in that case, you \
shouldn't use the createView() method since that creates a view. But what might be \
happening here is that your implementation of KoCanvasController doesn't size your \
canvas correctly. This is a bit fiddly, and we don't have any good example yet of how \
it should work. I'm working on that, but I haven't had a whole lot of time yet, plus, \
the code is still in a state of flux. You need to make sure, though, that your \
KoCanvasController implementation is complete -- this is the viewport that handles \
the display of the correct part of the document -- and that you set the canvas on \
that.

And make sure that you either use the QWidget based canvas or the QGraphicsItem based \
canvas. If you use the QWidget-based canvas, use the KoAbstraction library. This is \
by far the simplest solution, since it only implies implementing two abstract \
classes.

Here's some sample code written by Mani Chandrasekar for his conf.kde.in presentation \
that shows how it works:

you need to implement two classes (this is the absolute minimum):

-------------

KoAbstractApplicationWindow
KoAbstractApplicationController


MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    KoAbstractApplicationWindow((m_controller
                                 = new MyApplicationController(this))),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);

}

MainWindow::~MainWindow()
{
    delete ui;
}

----------------

MyApplicationController::MyApplicationController(MainWindow *window)
    : KoAbstractApplicationController(window),
    m_window(window)
{
}

QWidget * MyApplicationController::mainWindow() const
{
    return m_window;
}

void MyApplicationController::setCentralWidget(QWidget *widget)
{
    m_window->setCentralWidget(widget);
}


--------------------

And then it's simply a matter of instantiating and calling the method to open a file:

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    MainWindow wnd;
    wnd.show();

    wnd.controller()->openDocument("/home/mani/Downloads/MicromaxMMX300G.ppt");
    return a.exec();
}

-- 
Boudewijn Rempt | http://www.valdyas.org, http://www.krita.org
_______________________________________________
calligra-devel mailing list
calligra-devel@kde.org
https://mail.kde.org/mailman/listinfo/calligra-devel


[prev in list] [next in list] [prev in thread] [next in thread]