java - How can I measure/calculate the size a Document needs to render itself? -

-

i have javax.swing.text.document , want calculate size of bounding box document needs render itself.

is possible?

it trivial plain text (height = line count * line height, width = max width on each line) how can rtf, html or other document?

this code might give ideas:

import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.text.*;  public class textpaneperfectsize extends jframe {     jtextfield textfield;     jtextpane textpane;      public textpaneperfectsize()     {         textfield = new jtextfield(20);         textfield.settext("add text");         getcontentpane().add(textfield, borderlayout.north );         textfield.addactionlistener( new actionlistener()         {             public void actionperformed(actionevent e)             {                 try                 {                     document doc = textpane.getdocument();                     doc.insertstring(doc.getlength(), " " + textfield.gettext(), null);                     textfield.settext("");                     dimension d = textpane.getpreferredsize();                     rectangle r = textpane.modeltoview( textpane.getdocument().getlength() );                     d.height = r.y + r.height;                     textpane.setpreferredsize( d );                     getcontentpane().validate(); //                  pack();                 }                 catch(exception e2) {}             }         });          jlabel label = new jlabel("hit enter add text text pane");         getcontentpane().add(label);          jpanel south = new jpanel();         textpane = new jtextpane();         textpane.settext("some text");         textpane.seteditable( false ); //      textpane.setpreferredsize( new dimension(120, 23) );          south.add( textpane ); //      getcontentpane().add(south, borderlayout.south);         getcontentpane().add(textpane, borderlayout.south);     }      public static void main(string[] args)     {         jframe frame = new textpaneperfectsize();         frame.setsize(200, 200);         frame.setlocationrelativeto( null );         frame.setdefaultcloseoperation(exit_on_close);         frame.setvisible(true);     } }

Comments

Post a Comment

Popular posts from this blog

c++ - How do I get a multi line tooltip in MFC -

-
right now, have tool tip pops when hover on edit box. problem tool tip contains multiple error messages , in 1 long line. need have each error message on own line. error messages contained in cstring new line seperating them. my existing code below. bool ontooltiptext(uint, nmhdr* pnmhdr, lresult* presult) { assert(pnmhdr->code == ttn_needtexta || pnmhdr->code == ttn_needtextw); // need handle both ansi , unicode versions of message tooltiptexta* pttta = (tooltiptexta*)pnmhdr; tooltiptextw* ptttw = (tooltiptextw*)pnmhdr; // tchar szfulltext[256]; cstring strtiptext=_t(""); uint nid = pnmhdr->idfrom; if (pnmhdr->code == ttn_needtexta && (pttta->uflags & ttf_idishwnd) || pnmhdr->code == ttn_needtextw && (ptttw->uflags & ttf_idishwnd)) { // idfrom hwnd of tool nid = ::getdlgctrlid((hwnd)nid); } //m_errprojaccel[ch] contains 1 or more error messages each...
Read more

asp.net - In javascript how to find the height and width -

-
i having .aspx , masterpage page. in masterpage loading aspx page . in aspx page design using generating table structure using code-behind server in javascript how find height , width . regards, kumar if you're looking table height , width, should it var tbl = document.getelementbyid('tbldemo'); alert(tbl.offsetwidth + '\n' + tbl.offsetheight);
Read more

c# - DataTable to EnumerableRowCollection -

-
i have datatable according client requirement can contain invalid date "00/00/1999",null,empty string.(typed datset) when collect them enumerables wish convert of invalid forms empty string. (i.e) enumerablerowcollection<datarow> query = order in _table.asenumerable() select new { orderdate= string.isnullorempty(convert.tostring(order.field<datetime>("orderdate")) || (how check date invalid date) ? string.empty : order.field<datetime>("orderdate") } how check whether date valid date or not? datetime.tryparse...like given current code: datetime date; enumerablerowcollection<datarow> query = order in _table.asenumerable() select new { orderdate= string.isnullorempty(convert.tostring(order.field<datetime>("orderdate")) || !datetime.tryparse(convert.tostring(order.field<datetime...
Read more