Phil Endecott wrote: >>> I am slowly working through all the places where small changes will be >>> needed to work with my text rotation feature. > > At present, the logical_rect returned by GetStringExtents can have > negative width (or height?) for non-left-to-right scripts. Is this a > useful feature, or is it just how it worked out? > > I have to decide whether a rotated (e.g. upside-down) font should > return a rectangle with negative dimensions in the same way, or not. > > The easiest thing for me to do is to always return a "valid" rectangle > with positive height and width: I simply find the coordinates of the > four corners of the string and use min and max to get the bounding > box. But this would change the current behaviour for right-to-left scripts. > > Does anyone rely on the current behaviour of GetStringExtents?
Yes, it's important that you can do this: 1) DrawString( 10,10 ) 2) GetStringExtents( &rect ) 3) region = translate( rect, 10, 10 ) 4) Flip( ®ion ) In this case ink_rect would be used, but logical_rect should not have a different orientation or offset. -- Best regards, Denis Oliver Kropp .------------------------------------------. | DirectFB - Hardware accelerated graphics | | http://www.directfb.org/ | "------------------------------------------" _______________________________________________ directfb-dev mailing list [email protected] http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-dev
