Paint QTextDocument splitted by pages 1/5 and edit txt

[patrik08]

I try to (draw) in split mode a QTextDocument on each page to edit text & display pages, (like openoffice)
the spitt is only a QGraphicsItem paint after i retranslate
all keybord / mouse event to correct QPointF, only to textapi.

But i can not controll the cutting blockelement ...
the page 1 & 2 is ok after the cutting paint go crazy.

I suppose i must write a QPaintEngine like QTextDocument[::]print() and PageBreakFlags must run i suppose ?
Or is here other way?

How i subclass QPaintEngine to binding to QGraphicsItem[::]paint() ?
and respect PageBreakFlags policy...

/* M_PageSize DDPAGE;   = container 
  from margin and multi page size */
void BaseText::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
                              QWidget *widget)
{
  const QRectF rectalldoc = boundingRect();   /* all page rect call to recalc pagetotal */
  const int PageS = DocPageSumme;
  QTextDocument *_d = document();
  for (int i = 0; i < PageS; ++i)  {
   painter->save();
   const QRectF innrect = DDPAGE.PageInternal(i);  /* rect to place one page */
   painter->translate(innrect.topLeft().x(), innrect.topLeft().y() - (i * DDPAGE.hight()) );
   _d->drawContents(painter,QRectF(0, i * DDPAGE.hight() ,_d->size().rwidth(), DDPAGE.hight() ));
   painter->restore();
  }
}

/* M_PageSize DDPAGE;   = container 
  from margin and multi page size */
void BaseText::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
                              QWidget *widget)
{
  const QRectF rectalldoc = boundingRect();   /* all page rect call to recalc pagetotal */
  const int PageS = DocPageSumme;
  QTextDocument *_d = document();
  for (int i = 0; i < PageS; ++i)  {
   painter->save();
   const QRectF innrect = DDPAGE.PageInternal(i);  /* rect to place one page */
   painter->translate(innrect.topLeft().x(), innrect.topLeft().y() - (i * DDPAGE.hight()) );
   _d->drawContents(painter,QRectF(0, i * DDPAGE.hight() ,_d->size().rwidth(), DDPAGE.hight() ));
   painter->restore();
  }
}

To copy to clipboard, switch view to plain text mode 

[patrik08]

I solved self i paint page like a normal printer, each page having a space to next.

I take a QGraphicsRectItem and i draw inline QTextDocument and blink textcursor
After if pageCount() change i set a new Qrect to item and scene

Only QT 4.4 or 4.5 Can Make its , i suppose QTextDocumentFragment update...

void ScribePage::paint(QPainter * painter , 
                      const QStyleOptionGraphicsItem *option , QWidget *widget   )
{
  /* QTextDocument = _d  */
	PageTotal = _d->pageCount();
	const int PageSumm = qBound (1,_d->pageCount(),MaximumPages);
	QTextFrame  *Tframe = _d->rootFrame();
	root_format = Tframe->frameFormat();
	const QRectF ActiveBlock = CurrentBlockRect();  
    /* discovery qtextcursor living  Current_Page_Nr  */
 
	  painter->save();
	  painter->setPen( Qt::NoPen );
    painter->setBrush(Qt::lightGray);
		painter->drawRect(boundingRect());
	  painter->restore();
	 for (int i = 0; i < PageSumm; ++i)  {
		 const QPointF topleft = PageIndexTopLeft(i);  /* page top left point */
		 DrawPage(i,painter,i);   /* active page from cursor !!  
      selectAll must draw cursor each page*/
	 }
 
}
 
void ScribePage::DrawPage( const int index  , 
                         QPainter * painter , const int cursorpage )
{
		const QPointF topleft = PageIndexTopLeft(index);
	  QAbstractTextDocumentLayout::PaintContext CTX; 
	  CTX.palette.setColor(QPalette::Text, Qt::black);
	  const QRectF body = QRectF(0, topleft.y() ,Page_Edit_Rect.width(),
             Page_Edit_Rect.height()); /* on view */
	  QRectF view(0, index * body.height(), body.width(), body.height() );   /* on doc */
 
		if (index != cursorpage || !Edit_On()) {
		painter->save();
		painter->translate(body.left(), body.top() - index * body.height());
		painter->setClipRect(view);
    CTX.clip = view;
	  _d->documentLayout()->draw(painter,CTX);
    painter->restore();
    return;
		}
 
		/* draw cursor active page no !edit no print only display edit! */
		painter->save();
		painter->translate(body.left(), body.top() - index * body.height());
		painter->setClipRect(view);
    CTX.clip = view;
		QColor BackHightlight("#0072ab");
		BackHightlight.setAlpha(180);
		CTX.palette.setColor(QPalette::Text, Qt::black);
		CTX.palette.setColor(QPalette::Highlight,BackHightlight);
		CTX.palette.setColor(QPalette::HighlightedText,Qt::white);
		CTX.selections;
		CTX.clip = view;
	  CTX.cursorPosition = -1;
		/* play cursor */
 
		  if (cursortime) {  /* blink intervall by timer */
				CTX.cursorPosition = C_cursor.position();
			 }
			if ( C_cursor.hasSelection()) {
				QAbstractTextDocumentLayout::Selection Internal_selection;
				Internal_selection.cursor = C_cursor;
 
				QPalette::ColorGroup cg = cursorIsFocusIndicator ? QPalette::Active : QPalette::Inactive;
				Internal_selection.format.setBackground(CTX.palette.brush(cg, QPalette::Highlight));
				Internal_selection.format.setForeground(CTX.palette.brush(cg, QPalette::HighlightedText));
				Internal_selection.format.setProperty(QTextFormat::FullWidthSelection, true);
				CTX.selections.append(Internal_selection);
 
			}
		_d->documentLayout()->draw(painter,CTX);
		painter->restore();
}

void ScribePage::paint(QPainter * painter , 
                      const QStyleOptionGraphicsItem *option , QWidget *widget   )
{
  /* QTextDocument = _d  */
	PageTotal = _d->pageCount();
	const int PageSumm = qBound (1,_d->pageCount(),MaximumPages);
	QTextFrame  *Tframe = _d->rootFrame();
	root_format = Tframe->frameFormat();
	const QRectF ActiveBlock = CurrentBlockRect();  
    /* discovery qtextcursor living  Current_Page_Nr  */
	
	  painter->save();
	  painter->setPen( Qt::NoPen );
    painter->setBrush(Qt::lightGray);
		painter->drawRect(boundingRect());
	  painter->restore();
	 for (int i = 0; i < PageSumm; ++i)  {
		 const QPointF topleft = PageIndexTopLeft(i);  /* page top left point */
		 DrawPage(i,painter,i);   /* active page from cursor !!  
      selectAll must draw cursor each page*/
	 }
	
}

void ScribePage::DrawPage( const int index  , 
                         QPainter * painter , const int cursorpage )
{
		const QPointF topleft = PageIndexTopLeft(index);
	  QAbstractTextDocumentLayout::PaintContext CTX; 
	  CTX.palette.setColor(QPalette::Text, Qt::black);
	  const QRectF body = QRectF(0, topleft.y() ,Page_Edit_Rect.width(),
             Page_Edit_Rect.height()); /* on view */
	  QRectF view(0, index * body.height(), body.width(), body.height() );   /* on doc */
	
		if (index != cursorpage || !Edit_On()) {
		painter->save();
		painter->translate(body.left(), body.top() - index * body.height());
		painter->setClipRect(view);
    CTX.clip = view;
	  _d->documentLayout()->draw(painter,CTX);
    painter->restore();
    return;
		}
    
		/* draw cursor active page no !edit no print only display edit! */
		painter->save();
		painter->translate(body.left(), body.top() - index * body.height());
		painter->setClipRect(view);
    CTX.clip = view;
		QColor BackHightlight("#0072ab");
		BackHightlight.setAlpha(180);
		CTX.palette.setColor(QPalette::Text, Qt::black);
		CTX.palette.setColor(QPalette::Highlight,BackHightlight);
		CTX.palette.setColor(QPalette::HighlightedText,Qt::white);
		CTX.selections;
		CTX.clip = view;
	  CTX.cursorPosition = -1;
		/* play cursor */
		
		  if (cursortime) {  /* blink intervall by timer */
				CTX.cursorPosition = C_cursor.position();
			 }
			if ( C_cursor.hasSelection()) {
				QAbstractTextDocumentLayout::Selection Internal_selection;
				Internal_selection.cursor = C_cursor;
				
				QPalette::ColorGroup cg = cursorIsFocusIndicator ? QPalette::Active : QPalette::Inactive;
				Internal_selection.format.setBackground(CTX.palette.brush(cg, QPalette::Highlight));
				Internal_selection.format.setForeground(CTX.palette.brush(cg, QPalette::HighlightedText));
				Internal_selection.format.setProperty(QTextFormat::FullWidthSelection, true);
				CTX.selections.append(Internal_selection);
				
			}
		_d->documentLayout()->draw(painter,CTX);
		painter->restore();
}

To copy to clipboard, switch view to plain text mode 

Results ....



QTextControl can not make. i write my own handler... a lot of work and day...
svn
http://fop-miniscribus.googlecode.co...perSizeScroll/

The xsl-fo read write separate routine can make Bookmark PDF save as RTF , html and open from OpenOffice xslt convert to html

My question: I ask you to help me to insert 150 QAction, Have you time?

[patrik08]

Now i have a problem on a start drag if i set a setPixmap on QDrag it cut image on topleft 50x50 why this?
What is not ok?

IMO i can not printscreen mouse and drag...

bool TextProcessor::StartDragOperation()
{
	DragFill = false;	
	if (!C_cursor.hasSelection()) {
	return DragFill;
	}
	QMimeData *data = createMimeDataFromSelection();
      if (data) {
      QApplication::clipboard()->setMimeData(data);
      QDrag *drag = new QDrag(Gwi);   /* QWidget *Gwi;  from event */
      drag->setMimeData(data); 
			drag->setHotSpot(QPoint(-25,-25));
			/* try to make a QPixmap from mime html fragment or image drag drop */
      const QPixmap playdragicon = ImagefromMime(data);
      if (!playdragicon.isNull()) {
			drag->setPixmap(playdragicon);
      }
			if (drag->exec(Qt::CopyAction | 
                     Qt::MoveAction, 
                     Qt::CopyAction) == Qt::MoveAction) {
			DragFill = true;
			emit q_startDrag(PointPositionOnDoc);  /* pos from events */
			}
			}
	return DragFill;
}
 
QMimeData *TextProcessor::createMimeDataFromSelection()
{
	 QTextCharFormat base = C_cursor.charFormat();
	 QString txt;
 
	 if (C_cursor.hasSelection()) {
		 txt = C_cursor.selectedText();
	 }
 
	 QTextImageFormat pico = base.toImageFormat(); 
	 if (pico.isValid()) { 
        QVariant xx = pico.property(_IMAGE_PICS_ITEM_); 
        if (!xx.isNull()) {
        SPics pic = xx.value<SPics>();
        QList<SPics> li;
        li.append(pic);
        QString Sdd = SaveImageGroup(li);
        QMimeData *mimeData = new QMimeData;
        mimeData->setData("application/x-picslists",Sdd.toUtf8());
        return mimeData;
        }
	 }
 
	const QTextDocumentFragment fragment(C_cursor);
	if ( fragment.isEmpty() && txt.size() > 0 ) {
		QMimeData *xm = new QMimeData();
		xm->setText(txt);
		return xm;
	} else if (fragment.isEmpty() && txt.isEmpty() ) {
		QMimeData *xm = new QMimeData();
		xm->setText(QString("...Selection...Error..."));
		return xm;
	} else {
	return new QTextEditMimeData(fragment);    
    /////QTextDocumentFragment::fromHtml(md->html())
	}
}

bool TextProcessor::StartDragOperation()
{
	DragFill = false;	
	if (!C_cursor.hasSelection()) {
	return DragFill;
	}
	QMimeData *data = createMimeDataFromSelection();
      if (data) {
      QApplication::clipboard()->setMimeData(data);
      QDrag *drag = new QDrag(Gwi);   /* QWidget *Gwi;  from event */
      drag->setMimeData(data); 
			drag->setHotSpot(QPoint(-25,-25));
			/* try to make a QPixmap from mime html fragment or image drag drop */
      const QPixmap playdragicon = ImagefromMime(data);
      if (!playdragicon.isNull()) {
			drag->setPixmap(playdragicon);
      }
			if (drag->exec(Qt::CopyAction | 
                     Qt::MoveAction, 
                     Qt::CopyAction) == Qt::MoveAction) {
			DragFill = true;
			emit q_startDrag(PointPositionOnDoc);  /* pos from events */
			}
			}
	return DragFill;
}

QMimeData *TextProcessor::createMimeDataFromSelection()
{
	 QTextCharFormat base = C_cursor.charFormat();
	 QString txt;
	
	 if (C_cursor.hasSelection()) {
		 txt = C_cursor.selectedText();
	 }
	 
	 QTextImageFormat pico = base.toImageFormat(); 
	 if (pico.isValid()) { 
        QVariant xx = pico.property(_IMAGE_PICS_ITEM_); 
        if (!xx.isNull()) {
        SPics pic = xx.value<SPics>();
        QList<SPics> li;
        li.append(pic);
        QString Sdd = SaveImageGroup(li);
        QMimeData *mimeData = new QMimeData;
        mimeData->setData("application/x-picslists",Sdd.toUtf8());
        return mimeData;
        }
	 }
 
	const QTextDocumentFragment fragment(C_cursor);
	if ( fragment.isEmpty() && txt.size() > 0 ) {
		QMimeData *xm = new QMimeData();
		xm->setText(txt);
		return xm;
	} else if (fragment.isEmpty() && txt.isEmpty() ) {
		QMimeData *xm = new QMimeData();
		xm->setText(QString("...Selection...Error..."));
		return xm;
	} else {
	return new QTextEditMimeData(fragment);    
    /////QTextDocumentFragment::fromHtml(md->html())
	}
}

To copy to clipboard, switch view to plain text mode 

[patrik08]

I have other Problem on QTextDocument

QTextDocument can not draw fontLetterSpacing 200% or more
Can any body pleas try this code piece on qt4.4 and confirm is a bug or not...
Only QTextEdit draw it correct ... but i need QPicture to replay paint from cache

#include <QtGui>
 
int main( int argc, char ** argv )
{
    QApplication app( argc, argv );
 
    QTextDocument d("This is some text at Page #Page# .");
    QTextEdit t;
    t.setDocument(&d);
    t.selectAll();
 
    const qreal spacingnow = t.textCursor().charFormat().fontLetterSpacing();
    bool ok;
    qreal space = QInputDialog::getDouble(0, QObject::tr("Font Letter Spacing"),
            QObject::tr("Space:"),spacingnow,90,2000, 2, &ok);
    if (space > 0 && ok) {
        QTextCursor c = t.textCursor();
        QTextCharFormat format = c.charFormat();
        qDebug() << "This is some text at Page #Page# ." << space;
        format.setFontLetterSpacing(space);
        c.setCharFormat(format);
    }
 
    t.show();
    QTextDocument * doc = d.clone();
    for (QTextBlock srcBlock = d.firstBlock(), dstBlock = doc->firstBlock();
            srcBlock.isValid() && dstBlock.isValid();
            srcBlock = srcBlock.next(), dstBlock = dstBlock.next()) {
        dstBlock.layout()->setAdditionalFormats(srcBlock.layout()->additionalFormats());
    }
 
    QTextCursor cu(doc);
    const int PageNr = 1;
 
    /* search  _PAGE_NUMERATION_   #Page#  and replace nr. */
    qDebug() << "Replace #Page# as number  " << PageNr <<  "only on clone doc";
 
        QTextCursor bcu = doc->find("#Page#",cu,QTextDocument::FindWholeWords);
        if (!bcu.isNull ()) {
          if (bcu.hasSelection()) {
           QTextCharFormat format = bcu.charFormat();  /* take from selection */
                 QString remtxt = bcu.selectedText();
                 for (int i = 0; i < remtxt.size(); ++i) {
                   bcu.deleteChar();
                 }
          bcu.insertText(QString("%1").arg(PageNr),format);
          bcu.clearSelection();
          }
        }
 
 
        QTextFrame  *Tframe = doc->rootFrame();
        const QRectF stxt = doc->documentLayout()->frameBoundingRect(Tframe);
        QPicture img;
        img.setBoundingRect(stxt.toRect());
 
         QPainter painter;
         painter.begin(&img);  
         painter.setRenderHint(QPainter::TextAntialiasing);
         painter.setBrush(QColor(Qt::white));
         painter.setPen(Qt::NoPen);
         painter.drawRect(stxt);
 
         QAbstractTextDocumentLayout::PaintContext CTX;
         painter.setClipRect(stxt);
         CTX.cursorPosition = -1;
         CTX.clip = stxt;
         doc->documentLayout()->draw(&painter,CTX);
         painter.end(); 
 
 
 
    QTextEdit t2;
    t2.setDocument(doc);
    t2.show();
 
    QLabel la;
    la.setPicture (img);
    la.show();
 
    return app.exec();
}

#include <QtGui>

int main( int argc, char ** argv )
{
    QApplication app( argc, argv );

    QTextDocument d("This is some text at Page #Page# .");
    QTextEdit t;
    t.setDocument(&d);
    t.selectAll();

    const qreal spacingnow = t.textCursor().charFormat().fontLetterSpacing();
    bool ok;
    qreal space = QInputDialog::getDouble(0, QObject::tr("Font Letter Spacing"),
            QObject::tr("Space:"),spacingnow,90,2000, 2, &ok);
    if (space > 0 && ok) {
        QTextCursor c = t.textCursor();
        QTextCharFormat format = c.charFormat();
        qDebug() << "This is some text at Page #Page# ." << space;
        format.setFontLetterSpacing(space);
        c.setCharFormat(format);
    }

    t.show();
    QTextDocument * doc = d.clone();
    for (QTextBlock srcBlock = d.firstBlock(), dstBlock = doc->firstBlock();
            srcBlock.isValid() && dstBlock.isValid();
            srcBlock = srcBlock.next(), dstBlock = dstBlock.next()) {
        dstBlock.layout()->setAdditionalFormats(srcBlock.layout()->additionalFormats());
    }

    QTextCursor cu(doc);
    const int PageNr = 1;

    /* search  _PAGE_NUMERATION_   #Page#  and replace nr. */
    qDebug() << "Replace #Page# as number  " << PageNr <<  "only on clone doc";

        QTextCursor bcu = doc->find("#Page#",cu,QTextDocument::FindWholeWords);
        if (!bcu.isNull ()) {
          if (bcu.hasSelection()) {
           QTextCharFormat format = bcu.charFormat();  /* take from selection */
                 QString remtxt = bcu.selectedText();
                 for (int i = 0; i < remtxt.size(); ++i) {
                   bcu.deleteChar();
                 }
          bcu.insertText(QString("%1").arg(PageNr),format);
          bcu.clearSelection();
          }
        }


        QTextFrame  *Tframe = doc->rootFrame();
        const QRectF stxt = doc->documentLayout()->frameBoundingRect(Tframe);
        QPicture img;
        img.setBoundingRect(stxt.toRect());

         QPainter painter;
         painter.begin(&img);  
         painter.setRenderHint(QPainter::TextAntialiasing);
         painter.setBrush(QColor(Qt::white));
         painter.setPen(Qt::NoPen);
         painter.drawRect(stxt);

         QAbstractTextDocumentLayout::PaintContext CTX;
         painter.setClipRect(stxt);
         CTX.cursorPosition = -1;
         CTX.clip = stxt;
         doc->documentLayout()->draw(&painter,CTX);
         painter.end(); 



    QTextEdit t2;
    t2.setDocument(doc);
    t2.show();

    QLabel la;
    la.setPicture (img);
    la.show();

    return app.exec();
}

To copy to clipboard, switch view to plain text mode 

[netuno]

Hi I compiled your fontLetterSpacing code (Using Qt 4.4.1 and msvc 2008) and it seems I got the same result as you. Check out the image attached to this message for the results.

[patrik08]

Ok is a bug! QTextDocument drawing as image without fontLetterSpacing only qtextedit play correct.

[Toniy]

patrik08, is there any complete source code nowadays for this editor to get familiar with?