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Centering text in a rectange [message #35340]

Fri, 03 February 2012 16:57

Alboni
Messages: 216
Registered: January 2012
Location: Kajaani, Finland

Experienced Member

I need to display a number or objectname on top of a bitmap. I can't figure out how to get the text centered over the bitmap.

index.php?t=getfile&id=3640&private=0

// Relevant portion of the code I wrote
void Furniture::Paint(Draw& d)
{
switch (orientation)
{
case 1 : d.DrawImage(x,y,w,h,RotateClockwise(Img::Get(image))); break;
case 2 : d.DrawImage(x,y,w,h,Rotate180(Img::Get(image))); break;
case 3 : d.DrawImage(x,y,w,h,RotateAntiClockwise(Img::Get(image))); break;
default: d.DrawImage(x,y,w,h,Img::Get(image));
}
d.DrawText(x+w/3,y+h/3,name,Arial(30), Magenta);
}

Attachment: table.png
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[Updated on: Fri, 03 February 2012 17:01]

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Re: Centering text in a rectange [message #35341 is a reply to message #35340]

Fri, 03 February 2012 17:21

jerson
Messages: 202
Registered: June 2010
Location: Bombay, India

Experienced Member

This is how I would do it. The gurus out here might have simpler ways to achieve the same

1- Get size of text to be displayed. You will use the GetTextSize() function to achieve this

2- Get the size of the rectangle using GetSize()

3- X position centered text will start at
PosX = (Rect_X_extent-Text_x_extent)/2
PosY = (Rect_Y_extent-Text_Y_extent)/2

4- put the text there.

You might need to consider rotation of text differently.

Maybe there are utility functions that achieve the same, but, I do not know as I'm a relative newbie

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