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Thread: QPainter does not print html file as expected, ideas workarounds?

  1. 22nd October 2012, 22:39 #1
    YaPeL
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    Default QPainter does not print html file as expected, ideas workarounds?

    Hi, I used the snipet provided by this thread to print a html file, however, I have a nasty html file, with tables, and styles inside the table, and stuff like that:

    Qt Code: 
    1. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    2.  
    3. <html xmlns="http://www.w3.org/1999/xhtml">
    4. <HEAD>
    5.  <meta name="tipo_contenido"  content="text/html;" http-equiv="content-type" charset="utf-8">
    6. </HEAD>
    7. <table border="1" cellspacing="0" cellpadding="0" width="100%" style="font-size:12px;line-height:20px;">
    8. <tbody>
    9. <tr>
    10. 	<td valign="middle" align="left" width="40%" height="30">
    11. 		Nombre:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br/>
    12. 		Razon social:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br/>
    13. 	</td>
    14. 	<td valign="middle" align="left"  width="20%" size="80">
    15. 		<span style="font-size:8em;">&nbsp;</span>
    16. 	</td>
    17.  
    18. 	<td valign="middle" align="left"  width="40%" height="120">
    19. 		Nro Comprobante: <br/>
    20. 		Fecha y hora:<br/>
    21. 	</td>
    22.  
    23. </tr>
    24. <tr>
    25. 	<td valign="TOP" colspan="2">
    26. 		Domicilio comercial:<br/>
    27. 		Domicilio Fiscal:<br/>
    28. 		Iva: <br/>
    29. 	</td>
    30. 	<td valign="TOP" align="left" colspan="1">
    31. 		Cuit: <br/>
    32. 		Ing Brutos: <br/>
    33. 		Inicio Actividades:<br/>
    34. 	</td>
    35. </tr>
    36. <tr>
    37. 	<td valign="middle" colspan="4" height="">
    38. 		Identificacion:<br/>
    39. 		Senior(es): <br/>
    40. 		Domicilio: <br/>
    41. 		Iva: <br/>
    42. 		Cuit: <br/>
    43. 	  </td>
    44. </tr>
    45. </tbody>
    46. </table>
    47. 	    <table border="1" RULES=COLS cellspacing="1" cellpadding="4" width="100%">
    48. 		  <tr>
    49. 			  <td width="96" align="right" height="22" align="middle" style="font-size:12px">NETO</td>
    50. 			  <td width="96" align="right" height="22" align="middle" style="font-size:12px">IVA FACT</td>
    51. 			  <td width="96" align="right" height="22" align="middle" style="font-size:12px">IVA SOB</td>
    52. 			  <td width="96" align="right" height="22" align="middle" style="font-size:12px">IVA 21%</td>
    53. 			  <td width="96" align="right" height="22" align="middle" style="font-size:12px">IVA 27%</td>
    54. 			  <td width="96" align="right" height="22" align="middle" style="font-size:12px">IVA 10.5%</td>
    55. 			  <td width="96" align="right" height="22" align="middle" style="font-size:12px">TOTAL</td>
    56. 		  </tr>
    57. 	  </table>
    58. </html>
    To copy to clipboard, switch view to plain text mode 

    However Qt print it very different as how Chrome, firefox and IE do it... any idea or workaround? thanks!
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  2. 22nd October 2012, 23:55 #2
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    wysota
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    Default Re: QPainter does not print html file as expected, ideas workarounds?

    Define "very different"...
    Your biological and technological distinctiveness will be added to our own. Resistance is futile.

    Please ask Qt related questions on the forum and not using private messages or visitor messages.

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  3. 23rd October 2012, 03:14 #3
    ChrisW67
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    Default Re: QPainter does not print html file as expected, ideas workarounds?

    You are lucky it does anything at all. That "HTML" contains no <body></body> and is absolutely nothing like the XHTML it claims to be.

    Have you tried feeding that mess through QtWebKit?
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  4. 23rd October 2012, 03:25 #4
    YaPeL
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    Default Re: QPainter does not print html file as expected, ideas workarounds?

    No, I didn't try it, I was hoping that "setHtml" would have the same effect as feeding that html to a webKit Browser, but it didn't, chrome display that POS very nice, also, I have no clue on how to use QtWebKit to print an html file, any snipet? thanks
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  5. 23rd October 2012, 05:16 #5
    ChrisW67
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    Default Re: QPainter does not print html file as expected, ideas workarounds?

    You couldn't search for "print" in the manual?
    Qt Code: 
    1. QPrinter *printer;
    2. // set up printer
    3.  
    4. QWebView v;
    5. v.setHtml(html);
    6. v.show();
    7. v.print(printer);
    8.  
    9. // or without the view widget
    10. QWebPage page;
    11. page.mainFrame()->setHtml(html);
    12. page.mainFrame()->print(printer);
    To copy to clipboard, switch view to plain text mode 

    QTextDocument has a limited range of allowable HTML and does not cater for the huge range of malformed HTML in the wild. The browser components do, but they are much heavier components.
    "We can't solve problems by using the same kind of thinking we used when we created them." -- Einstein
    If you are posting code then please use [code] [/code] tags around it - makes addressing the problem easier.
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  6. 23rd October 2012, 16:02 #6
    YaPeL
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    Default Re: QPainter does not print html file as expected, ideas workarounds?

    Quote Originally Posted by ChrisW67 View Post
    You couldn't search for "print" in the manual?
    Qt Code: 
    1. QPrinter *printer;
    2. // set up printer
    3.  
    4. QWebView v;
    5. v.setHtml(html);
    6. v.show();
    7. v.print(printer);
    8.  
    9. // or without the view widget
    10. QWebPage page;
    11. page.mainFrame()->setHtml(html);
    12. page.mainFrame()->print(printer);
    To copy to clipboard, switch view to plain text mode 

    QTextDocument has a limited range of allowable HTML and does not cater for the huge range of malformed HTML in the wild. The browser components do, but they are much heavier components.
    Right, QWebPage could handle that monstruosity pretty well, thanks a lot!
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