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13 Jul 2017
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TOPIC: how to refresh pdf page after add text

how to refresh pdf page after add text 2 years 11 months ago #10096

  • ankur123987
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Hi Redaeepdf team,

I am trying to add text in pdf but I can't see the text at the same time. Until not scroll so how can I view the text while i add text.

Thanks,

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how to refresh pdf page after add text 2 years 11 months ago #10098

  • Davide
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Hi,
I suggest you to use :
vRenderSync( PDFVPage page )
or
vRenderAsync( PDFVPage page )


For more info check this: http://www.radaeepdf.com/documentation/javadocs/com/radaee/view/PDFView.html#vRenderAsync(com.radaee.view.PDFVPage)

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how to refresh pdf page after add text 2 years 11 months ago #10101

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thanks davide for your reply i tried above method but its not working the changes are not reflecting at screen

please view my source code and let me know what should i do?

PageContent content = new PageContent();
content.Create();//create content, do not forget.
content.GSSave();
Matrix mat = new Matrix( 1, 1, 100, 500 );
content.GSSetMatrix(mat);
mat.Destroy();

Page page = doc.GetPage(currentpage_num);


Document.DocFont dfont = doc.NewFontCID("DroidSansFallback", 1 | 8);//bold and embed in horizontal writing
ResFont rfont = page.AddResFont(dfont);

content.TextBegin();
content.TextSetFont(rfont, 20);//set font and size
content.SetFillColor(0xff9801);
content.SetStrokeColor(0x10);
content.TextSetCharSpace(0);
content.TextSetWordSpace(0.3f);
content.TextSetLeading(20);
content.TextSetRenderMode(2);//fill and stroke
content.TextSetHScale(120);//set horizontal scale
content.DrawText(getDate());
content.TextEnd();
content.GSRestore();

//add content to page
page.AddContent(content, true);
content.Destroy();
PDFView pdf= new PDFView(getApplicationContext());


PDFVPage pdfd= new PDFVPage(doc,currentpage_num);
pdf.vRenderAsync(pdfd);

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how to refresh pdf page after add text 2 years 11 months ago #10120

  • radaee
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u shall do like:
PDFView pdf= new PDFView(getApplicationContext());
pdf.open(doc, ...);//set document object to view.

//then add contents:
PageContent content = new PageContent();
 content.Create();//create content, do not forget.
 content.GSSave();
 Matrix mat = new Matrix( 1, 1, 100, 500 );
 content.GSSetMatrix(mat);
 mat.Destroy();
//too many lines, other adding codes;
.......

PDFVPage vpage = pdf.vGetPage(currentpage_num);
pdf.vRenderAsync(vpage);

invalidate();//refresh to screen.

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Last edit: by radaee.

how to refresh pdf page after add text 2 years 11 months ago #10141

  • ankur123987
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Hi radaee, i tried your suggested code but i could nod find any open method in PDFView class. pdf.open(doc,...) does not works . however its content public void vOpen(Document doc, int page_gap, int back_color, PDFViewListener listener) i tried with this method too but no luck

one more thing invalidate() method is undefined in activity .please suggest any working code thanks

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how to refresh pdf page after add text 2 years 11 months ago #10145

  • radaee
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sorry, may some misunderstood.
PDFView is not View class, but PDFReader extends from android.View.
ot better explan this, show sample codes in PDFReader class:
	PDFPos pos = m_view.vGetPos((int)event.getX(), (int)event.getY());
	PDFVPage vpage = m_view.vGetPage(pos.pageno);
	Page page = vpage.GetPage();
	if( page != null )
	{
		float pt[] = new float[2];
		pt[0] = pos.x;
		pt[1] = pos.y;
		page.AddAnnotText(pt);//add a text note annotation.
		m_view.vRenderSync(vpage);//reflush to backing bitmap.
		if( m_listener != null )
			m_listener.OnPageModified(vpage.GetPageNo());//display to screen, this is important.
	}

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Last edit: by radaee.
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