QTextBrowser/QTextEdit html block width issue

[lexar]

Hi folks,

I observe an issue with the rendering of html block elements (with Qt 4.5.3 & 4.6.1 / WinXP):


1. The "Title" 1&2 formats differ only by the appended '<br>' tag, and without it the center alignment is not working. What is wrong here ? How can this be fixed without this extra tag ? (insertBlock() won't help)

2. But this hack does not work for in frame html any more. As you can see in the code for H2 "Frame #1/2 header". Here the '<br>' tag positioned in front makes the hack ?!?

So what do I the wrong way? How is the correct way to declare a frame-wide html block without some hooks ?

// _doc is a QTextDocument*;
   QTextFrame* root= _doc->rootFrame();
 
   QTextCursor c= root->firstCursorPosition();
 
   c.insertHtml("<div align=\"center\"><h1>Title.</h1></div><br>");
   c.insertBlock();
   c.insertHtml("<div align=\"center\"><h1>Title 2.</h1></div>");
 
   QTextFrameFormat providerFrame;
   providerFrame.setBorder( 1.0);
   providerFrame.setWidth(200.0);
 
   QTextFrame* f1= c.insertFrame(providerFrame);
   c.insertHtml("<h2>Frame #1 header.</h2><br>"
                "<p>content 1</p>"
                "<p>content 2</p>");
 
   c= root->lastCursorPosition();
   c.insertBlock();
 
   QTextFrame* f2= c.insertFrame(providerFrame);
   c.insertHtml("<br><h2>Frame #2 header.</h2>"
                "<p>content 1</p>"
                "<p>content 2</p>");
 
   c= root->lastCursorPosition();
   c.insertHtml("<p>end</p>");

// _doc is a QTextDocument*;
   QTextFrame* root= _doc->rootFrame();

   QTextCursor c= root->firstCursorPosition();

   c.insertHtml("<div align=\"center\"><h1>Title.</h1></div><br>");
   c.insertBlock();
   c.insertHtml("<div align=\"center\"><h1>Title 2.</h1></div>");

   QTextFrameFormat providerFrame;
   providerFrame.setBorder( 1.0);
   providerFrame.setWidth(200.0);

   QTextFrame* f1= c.insertFrame(providerFrame);
   c.insertHtml("<h2>Frame #1 header.</h2><br>"
                "<p>content 1</p>"
                "<p>content 2</p>");

   c= root->lastCursorPosition();
   c.insertBlock();

   QTextFrame* f2= c.insertFrame(providerFrame);
   c.insertHtml("<br><h2>Frame #2 header.</h2>"
                "<p>content 1</p>"
                "<p>content 2</p>");

   c= root->lastCursorPosition();
   c.insertHtml("<p>end</p>");

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H2 css:

h2 { font-size: 120%; font-weight: bold; background: lightgray; }

h2 { font-size: 120%; font-weight: bold; background: lightgray; }

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>This< seems to be a related post, but unfortunately not solved

Regards,
lexar

[vishwajeet.dusane]

Hi

I am not sure this will help you but why dn't you try QWebView class for setting up html data ?

[lexar]

I don't need the full power of a web renderer. And tried the text-browser first in hope it will consume fewer resources...

Seems that the insertHtml()/html-rendering functionality is definitely broken. Have found additional positioning/layout issues in between. Hope Qt will document the engine constraints and fix the bugs, some day...