[Plib-users] puLargeInput wrappable text fix.

[sickz6sickz <sic...@ho...>]

Hi all, I've made a fix for what I think is a bug in the puLargeInput
class.  I stumbled across this when I was using a large input with
wrappable text.  Sometimes when at the beginning of an empty input if
the user tried to go left (left arrow) then it would crash my
application out.  There wasn't anything to catch if it was wrappable in
one section of the code.  Im using puLargeInput.cxx,v 1.46.  

 

In the checkKey method, within the key switch statement I amended as
follows:

 

case PU_KEY_LEFT   :

                        case PU_KEY_RIGHT  :

                        if ( key == PU_KEY_LEFT )

                                    {

                        //If bottem slider code done by DM.  This stops
it crashing out sometimes when wrappable text is used.

                        //there is no bottem scrollbar with wrapped text
and this would make the app die when the user left

                        //cursored before the start of the 1st line.
This is fixed.

                                    cursor_position-- ; /* Left key
pressed */

                                    if ( bottom_slider )

                                                {

                                                if (old_text [
cursor_position ] == '\n')

 
bottom_slider->setValue( ( (prev_line_width - box_width)<0 ) ? 0.0f :
float(prev_line_width+10) /max_width);

                                                /* If the cursor is
going off the left edge of the box, scroll left. */

                                                else if
((bottom_value*max_width) > line_width_to_cursor+5) {

 
bottom_slider->setValue( ((bottom_value*max_width)-(box_width/2)-5)<0 ?
0.0f :

 
((bottom_value*max_width)-(box_width/2)-5)/max_width ) ;

                                                            }

                                                }

                                    }

                        else {

                                    cursor_position++ ; /* Right key
pressed */

                                    if ( bottom_slider )

                                                {

                                                if (old_text [
cursor_position-1 ] == '\n')

 
bottom_slider->setValue(0.0f) ;

                                                else if
((bottom_value*max_width)+(box_width) < line_width_to_cursor+5) {

 
bottom_slider->setValue(
((bottom_value*max_width)+(box_width/2)+5)/max_width ) ;

                                                            }

                                                }

                                    }

                        select_start_position = select_end_position =
cursor_position ;

                        break ;

 

Hope I helped

-simon