private void JustifyVertically(float pageWidth, float gap) { int barnumberStaffIndex = BarnumberStaffIndex(); float stafflinesTop = Staves[barnumberStaffIndex].Metrics.StafflinesTop; if(stafflinesTop != 0) { for(int i = barnumberStaffIndex; i < Staves.Count; ++i) { Staff staff = Staves[i]; if(staff.Metrics != null) { staff.Metrics.Move(0, stafflinesTop * -1); } } } Debug.Assert(Staves[barnumberStaffIndex].Metrics.StafflinesTop == 0); if((barnumberStaffIndex + 1) < Staves.Count)// There must be at least one visible staff (an InputStaff). { for(int i = (barnumberStaffIndex + 1); i < Staves.Count; ++i) { if(Staves[i].Metrics != null) { //BottomEdge bottomEdge = new BottomEdge(Staves[i - 1], 0F, pageWidth, gap); BottomEdge bottomEdge = GetBottomEdge(i - 1, barnumberStaffIndex, pageWidth, gap); if(bottomEdge != null) { TopEdge topEdge = new TopEdge(Staves[i], 0F, pageWidth); float separation = topEdge.DistanceToEdgeAbove(bottomEdge); float dy = gap - separation; // limit stafflineHeight to multiples of pageFormat.Gap so that stafflines // are not displayed as thick grey lines. dy = dy - (dy % gap) + gap; // the minimum space bewteen stafflines is gap pixels. if(dy > 0F) { for(int j = i; j < Staves.Count; ++j) { if(Staves[j].Metrics != null) { Staves[j].Metrics.Move(0F, dy); } } this.Metrics.StafflinesBottom += dy; } } } } } this.Metrics = new SystemMetrics(); foreach(Staff staff in Staves) { if(!(staff is HiddenOutputStaff) && staff.Metrics != null) { this.Metrics.Add(staff.Metrics); } } Debug.Assert(this.Metrics.StafflinesTop == 0); }