Question about show view of calligra tables

[tien dh]

Thank you, your solution help me very much. In fact, I used a a
QGraphicsItems based canvas. But now I know another approach. Thank a lot :)

On Wed, Mar 16, 2011 at 2:13 PM, Boudewijn Rempt <boud at valdyas.org> wrote:

> 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.inpresentation 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 at kde.org
> https://mail.kde.org/mailman/listinfo/calligra-devel
>



-- 
Do Huu Tien
Handphone No: 0972471786
Email: tiendh11986 at gmail.com
Y!M: dohuu_tien86
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