+ * Adjust the divider for a sensible split of the real estate (for example,
+ * when many transcripts are shown with a single protein). This should only be
+ * called after the split pane has been laid out (made visible) so it has a
+ * height.
+ */
+ protected void adjustDivider()
+ {
+ final AlignViewport topViewport = ((AlignFrame) getTopFrame()).viewport;
+ final AlignViewport bottomViewport = ((AlignFrame) getBottomFrame()).viewport;
+ final AlignmentI topAlignment = topViewport.getAlignment();
+ final AlignmentI bottomAlignment = bottomViewport.getAlignment();
+ boolean topAnnotations = topViewport.isShowAnnotation();
+ boolean bottomAnnotations = bottomViewport.isShowAnnotation();
+ // TODO need number of visible sequences here, not #sequences - how?
+ int topCount = topAlignment.getHeight();
+ int bottomCount = bottomAlignment.getHeight();
+ int topCharHeight = topViewport.getViewStyle().getCharHeight();
+ int bottomCharHeight = bottomViewport.getViewStyle().getCharHeight();
+
+ /*
+ * estimate ratio of (topFrameContent / bottomFrameContent)
+ */
+ int insets = Platform.isAMac() ? MAC_INSETS_HEIGHT
+ : WINDOWS_INSETS_HEIGHT;
+ // allow 3 'rows' for scale, scrollbar, status bar
+ int topHeight = insets + (3 + topCount) * topCharHeight
+ + (topAnnotations ? topViewport.calcPanelHeight() : 0);
+ int bottomHeight = insets + (3 + bottomCount) * bottomCharHeight
+ + (bottomAnnotations ? bottomViewport.calcPanelHeight() : 0);
+ double ratio = ((double) topHeight) / (topHeight + bottomHeight);
+
+ /*
+ * limit to 0.2 <= ratio <= 0.8 to avoid concealing all sequences
+ */
+ ratio = Math.min(ratio, 0.8d);
+ ratio = Math.max(ratio, 0.2d);
+ setRelativeDividerLocation(ratio);
+ }
+
+ /**