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Painter DrawLineStroke proposal [message #23895]

Wed, 02 December 2009 08:49

koldo
Messages: 3356
Registered: August 2008

Senior Veteran

Hello Mirek

Very recently there have been a change in DrawLineStroke() so that from now all lines are rounded. All previous calls to LineCap() are useless:

void Painter::DrawLineStroke(int width, Color color)
{
        Begin();
        LineCap(LINECAP_ROUND);   <<=== Line added
        switch(width) {
                case PEN_NULL:
                        Stroke(0, color);
                        End();
                        return;
                case PEN_SOLID:
                        Stroke(1, color);
                        break;
                case PEN_DASH:
                        Dash("18 6");
                        break;
                case PEN_DOT:
                        Dash("3 3");
                        break;
                case PEN_DASHDOT:
                        Dash("9 6 3 6");
                        break;
                case PEN_DASHDOTDOT:
                        Dash("9 3 3 3 3 3");
                        break;
        default:
                Stroke(width, color);
                End();
                return;
        }
        Stroke(1, color);
        End();
}

It would be good if you could remove that line Smile

Best regards
Koldo

Best regards
Iñaki

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Re: Painter DrawLineStroke proposal [message #23906 is a reply to message #23895]

Fri, 04 December 2009 08:16

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

koldo wrote on Wed, 02 December 2009 02:49

Hello Mirek

Very recently there have been a change in DrawLineStroke() so that from now all lines are rounded. All previous calls to LineCap() are useless:

void Painter::DrawLineStroke(int width, Color color)
{
        Begin();
        LineCap(LINECAP_ROUND);   <<=== Line added
        switch(width) {
                case PEN_NULL:
                        Stroke(0, color);
                        End();
                        return;
                case PEN_SOLID:
                        Stroke(1, color);
                        break;
                case PEN_DASH:
                        Dash("18 6");
                        break;
                case PEN_DOT:
                        Dash("3 3");
                        break;
                case PEN_DASHDOT:
                        Dash("9 6 3 6");
                        break;
                case PEN_DASHDOTDOT:
                        Dash("9 3 3 3 3 3");
                        break;
        default:
                Stroke(width, color);
                End();
                return;
        }
        Stroke(1, color);
        End();
}

It would be good if you could remove that line Smile

Best regards
Koldo

This is to improve the similarity of Painter and host platform Draw. Win32 basic line draw has caps rounded...

If you need full control, please use Painter API.

Mirek

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Re: Painter DrawLineStroke proposal [message #23908 is a reply to message #23906]

Fri, 04 December 2009 09:37

koldo
Messages: 3356
Registered: August 2008

Senior Veteran

Hello Mirek

So do I have to do this?:

void MyClass::Paint(Draw& drw) 
{
	Size sz = GetSize();
	ImageBuffer ib(sz);
	BufferPainter w(ib);	
	w.Clear(RGBAZero());

	w.LineCap(LINECAP_BUTT);		
	
	if (MY_ACTUAL_IMPLEMENTATION) 
		w.DrawLine(0, 0, 20, 20, 5, Black());	// w.LineCap(LINECAP_BUTT) does nothing
	else {			// Proposed implementation
		w.Move(0, 0);
		w.Line(20, 20);
		w.Stroke(5, Black());
	}
	
	drw.DrawImage(0, 0, ib);
}

I mean I cannot use DrawLine() and instead I have to use Move().Line.Stroke().

Best regards
Koldo

Best regards
Iñaki

Report message to a moderator

Re: Painter DrawLineStroke proposal [message #23909 is a reply to message #23908]

Fri, 04 December 2009 11:01

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

Yes.

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