/**
* Determines the model location that represents the maximum advance that fits within the given
* span. This could be used to break the given view. The result should be a location just shy of
* the given advance. This differs from viewToModel which returns the closest position which might
* be proud of the maximum advance.
*
* @param v the view to find the model location to break at.
* @param p0 the location in the model where the fragment should start it's representation >= 0.
* @param pos the graphic location along the axis that the broken view would occupy >= 0. This may
* be useful for things like tab calculations.
* @param len specifies the distance into the view where a potential break is desired >= 0.
* @return the maximum model location possible for a break.
* @see View#breakView
*/
public int getBoundedPosition(GlyphView v, int p0, float x, float len) {
if (len < 0) throw new IllegalArgumentException("Length must be >= 0.");
// note: this only works because swing uses TextLayouts that are
// only pure rtl or pure ltr
TextHitInfo hit;
if (layout.isLeftToRight()) {
hit = layout.hitTestChar(len, 0);
} else {
hit = layout.hitTestChar(layout.getAdvance() - len, 0);
}
return v.getStartOffset() + hit.getCharIndex();
}
