- * Check box dimensions and scroll positions and correct if necessary
- *
- * @param mousex
- * x position in overview panel
- * @param mousey
- * y position in overview panel
- * @param hiddenSeqs
- * hidden sequences
- * @param hiddenCols
- * hidden columns
- * @param ranges
- * viewport position properties
- */
- public void updateViewportFromMouse(int mousex, int mousey,
- HiddenSequences hiddenSeqs, ColumnSelection hiddenCols,
- ViewportRanges ranges)
- {
- int x = mousex;
- int y = mousey;
-
- int alwidth = ranges.getAbsoluteAlignmentWidth();
- int alheight = ranges.getAbsoluteAlignmentHeight();
-
- if (x < 0)
- {
- x = 0;
- }
-
- if (y < 0)
- {
- y = 0;
- }
-
- //
- // Convert x value to residue position
- //
-
- // need to determine where scrollCol should be, given x
- // to do this also need to know width of viewport, and some hidden column
- // correction
-
- // convert x to residues - this is an absolute position
- int xAsRes = Math.round((float) x * alwidth / width);
-
- // get viewport width in residues
- int vpwidth = ranges.getEndRes() - ranges.getStartRes() + 1;
-
- // get where x should be when accounting for hidden cols
- // if x is in a hidden col region, shift to left - but we still need
- // absolute position
- // so convert back after getting visible region position
- int visXAsRes = hiddenCols.findColumnPosition(xAsRes);
-
- // check in case we went off the edge of the alignment
- int visAlignWidth = hiddenCols.findColumnPosition(alwidth - 1);
- if (visXAsRes + vpwidth - 1 > visAlignWidth)
- {
- // went past the end of the alignment, adjust backwards
-
- // if last position was before the end of the alignment, need to update
- if ((scrollCol + vpwidth - 1) < visAlignWidth)
- {
- visXAsRes = hiddenCols.findColumnPosition(hiddenCols
- .subtractVisibleColumns(vpwidth - 1, alwidth - 1));
- }
- else
- {
- visXAsRes = scrollCol;
- }
- }
-
- //
- // Convert y value to sequence position
- //
-
- // convert y to residues
- int yAsSeq = Math.round((float) y * alheight / sequencesHeight);
-
- // get viewport height in sequences
- // add 1 because height includes both endSeq and startSeq
- int vpheight = ranges.getEndSeq() - ranges.getStartSeq() + 1;
-
- // get where y should be when accounting for hidden rows
- // if y is in a hidden row region, shift up - but we still need absolute
- // position,
- // so convert back after getting visible region position
- yAsSeq = hiddenSeqs.adjustForHiddenSeqs(hiddenSeqs
- .findIndexWithoutHiddenSeqs(yAsSeq));
-
- // check in case we went off the edge of the alignment
- int visAlignHeight = hiddenSeqs.findIndexWithoutHiddenSeqs(alheight);
- int visYAsRes = hiddenSeqs.findIndexWithoutHiddenSeqs(yAsSeq);
- if (visYAsRes + vpheight - 1 > visAlignHeight)
- {
- // went past the end of the alignment, adjust backwards
- if ((scrollRow + vpheight - 1) < visAlignHeight)
- {
- visYAsRes = hiddenSeqs.findIndexWithoutHiddenSeqs(hiddenSeqs
- .subtractVisibleRows(vpheight - 1, alheight - 1));
- }
- else
- {
- visYAsRes = scrollRow;
- }
- }
-
- // update scroll values
- scrollCol = visXAsRes;
- scrollRow = visYAsRes;
-
- }
-
- /**
- * Update the overview panel box when the associated alignment panel is
- * changed
- *
- * @param hiddenSeqs
- * hidden sequences
- * @param hiddenCols
- * hidden columns
- * @param ranges
- * viewport position properties
- */
- public void setBoxPosition(HiddenSequences hiddenSeqs,
- ColumnSelection hiddenCols, ViewportRanges ranges)
- {
- int alwidth = ranges.getAbsoluteAlignmentWidth();
- int alheight = ranges.getAbsoluteAlignmentHeight();
-
- // work with absolute values of startRes and endRes
- int startRes = hiddenCols.adjustForHiddenColumns(ranges.getStartRes());
- int endRes = hiddenCols.adjustForHiddenColumns(ranges.getEndRes());
-
- // work with absolute values of startSeq and endSeq
- int startSeq = hiddenSeqs.adjustForHiddenSeqs(ranges.getStartSeq());
- int endSeq = hiddenSeqs.adjustForHiddenSeqs(ranges.getEndSeq());
-
- // boxX, boxY is the x,y location equivalent to startRes, startSeq
- boxX = Math.round((float) startRes * width / alwidth);
- boxY = Math.round((float) startSeq * sequencesHeight / alheight);
-
- // boxWidth is the width in residues translated to pixels
- // since the box includes both the start and end residues, add 1 to the
- // difference
- boxWidth = Math
- .round((float) (endRes - startRes + 1) * width / alwidth);
- // boxHeight is the height in sequences translated to pixels
- boxHeight = Math.round((float) (endSeq - startSeq + 1)
- * sequencesHeight
- / alheight);
- }
-
- /**