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Re: Substring formating in ArrayCtrl (SqlCtrl) [message #22817 is a reply to message #22807]

Wed, 19 August 2009 03:58

bushman
Messages: 134
Registered: February 2009

Experienced Member

If you meant,

ArrayCtrl arr;
arr.AddColumn("Highlighted");
...
arr.Add("[* Ultimate++] is great!");

I�ve tried that, but unfortunately it didn�t work.
I�ve devised a way, but I don�t know wheather there�s some simpler solution. It requires overwriting the Display::Paint method, like in the code below:

struct HighlightDisplay : public Display {
	
	static String term;
	
	virtual void Paint(Draw& w, const Rect& r, const Value& q, Color ink, Color paper, dword style) const
   	{	
	 	w.DrawRect(r, paper);
   		Font font = StdFont();
   		String s(q);
/* check if there�s any substring to highlight in text passed to display*/
   		int ix = ToLower(s).Find(ToLower(term));
   		if(ix >= 0) {
    		        Font bold = StdFont().Bold();
/* break down text into highlighted and plain strings */ 
  			String s0 = s.Mid(0, ix);
   			String s1 = s.Mid(ix, term.GetCount());    // <-- substring to highlight
   			String s2 = s.Mid(ix + term.GetCount());
/* draw highlighted and plain strings */
			w.DrawText(r.left, r.top, s0, font, ink); 
			w.DrawText(r.left + GetTextSize(s0, font).cx, r.top, s1, bold, Blue()); // <-- highlights in bold and blue
			w.DrawText(r.left + GetTextSize(s0, font).cx + GetTextSize(s1, bold).cx, r.top, s2, font, ink);
			return;
   		}
		w.DrawText(r.left, r.top, s, font, ink);
   	}
};

String HighlightDisplay::term = "";

Then I can write

ArrCtrl arr;
arr.AddColumn("Highlighted").SetDisplay(Single<HighlightDisplay>());
...
//set term to highlight through HighlightDisplay::term static member:
HighlightDisplay::term = "Ultimate++";
arr.Add("Ultimate++ is great!");

I�ve been using this code and it has worked fine. I just thought there must be another SIMPLER way of doing it.

Thanks anyway.

[Updated on: Wed, 19 August 2009 04:08]

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