145     Rect elementRect = element.getVisibleBounds();  in perform()  local
147     int topMargin = (int) (elementRect.height() * topMarginRatio);  in perform()
148     int bottomMargin = (int) (elementRect.height() * bottomMarginRatio);  in perform()
149     int leftMargin = (int) (elementRect.width() * leftMarginRatio);  in perform()
150     int rightMargin = (int) (elementRect.width() * rightMarginRatio);  in perform()
151     int adjustedbottom = elementRect.bottom - bottomMargin;  in perform()
152     int adjustedTop = elementRect.top + topMargin;  in perform()
153     int adjustedLeft = elementRect.left + leftMargin;  in perform()
154     int adjustedRight = elementRect.right - rightMargin;  in perform()
162         startX = elementRect.centerX();  in perform()
164         endX = elementRect.centerX();  in perform()
168         startX = elementRect.centerX();  in perform()
170         endX = elementRect.centerX();  in perform()
175         startY = elementRect.centerY();  in perform()
177         endY = elementRect.centerY();  in perform()
181         startY = elementRect.centerY();  in perform()
183         endY = elementRect.centerY();  in perform()