public void paintSelection(Graphics g, int rowMin, int rowMax, int colMin, int colMax) {
for (int row = rowMin; row <= rowMax; row++) {
for (int column = colMin; column <= colMax; column++) {
if (!grid.isCellSpan(row, column)) {
Rectangle cellBounds = grid.getCellBounds(row, column);
if (grid.getSelectionModel().isSelected(row, column)) {
g.setColor(Color.RED);
g.drawRect(
(int) cellBounds.getX() + 1,
(int) cellBounds.getY() + 1,
(int) cellBounds.getWidth() - 2,
(int) cellBounds.getHeight() - 2);
}
} else {
CellSpan span = grid.getSpanModel().getSpanOver(row, column);
if (grid.getSelectionModel().isSelected(span.getRow(), span.getColumn())) {
g.setColor(Color.RED);
Rectangle cellBounds = grid.getCellBounds(span.getFirstRow(), span.getLastColumn());
g.drawRect(
(int) cellBounds.getX() + 1,
(int) cellBounds.getY() + 1,
(int) cellBounds.getWidth() - 2,
(int) cellBounds.getHeight() - 2);
}
}
}
}
}
public void paintSpans(Graphics g, int rowMin, int rowMax, int colMin, int colMax) {
Iterator<?> cell = grid.getSpanModel().getSpanIterator();
while (cell.hasNext()) {
CellSpan span = (CellSpan) cell.next();
Rectangle cellBounds = grid.getCellBounds(span.getRow(), span.getColumn());
// Only paint cell if visible
if (span.getLastRow() >= rowMin
&& span.getLastColumn() >= colMin
&& span.getFirstRow() <= rowMax
&& span.getFirstColumn() <= colMax) {
paintCell(g, cellBounds, span.getRow(), span.getColumn());
// Paint grid line around cell
if (grid.getShowGrid()) {
g.setColor(grid.getGridColor());
g.drawRect(cellBounds.x, cellBounds.y, cellBounds.width, cellBounds.height);
}
}
}
}
public void actionPerformed(ActionEvent event) {
JGrid grid = (JGrid) event.getSource();
if (grid.isEditing() && !grid.getCurrentCellEditor().stopCellEditing()) {
return;
}
SelectionModel selectionModel = grid.getSelectionModel();
List<Cell> selectedCells = selectionModel.getSelectedCells();
int selectedCount = selectedCells.size();
if (selectedCount == 0) {
return;
}
Cell firstSelectedCell = selectionModel.getSelectedCell();
Cell lastSelectedCell = selectionModel.getLastSelectedCell();
int row = lastSelectedCell.getRow();
int column = lastSelectedCell.getColumn();
if (shiftPressed) {
if (shiftRegion == null) {
shiftRegion = new SelectionRegion();
shiftRegion.setFirstRow(row);
shiftRegion.setFirstColumn(column);
shiftRegion.setLastRow(row);
shiftRegion.setLastColumn(column);
}
boolean nextSelection = true;
if ((dx == 1) && (column < grid.getColumnCount() - 1)) {
column++;
} else if ((dx == -1) && (column > 0)) {
column--;
} else if ((dy == 1) && (row < grid.getRowCount() - 1)) {
row++;
} else if ((dy == -1) && (row > 0)) {
row--;
} else {
nextSelection = false;
}
if (nextSelection) {
GridSelectionAlgorithm selectionAlgorithm = new GridSelectionAlgorithm(grid);
selectionAlgorithm.update(
row,
column,
firstSelectedCell.getRow(),
firstSelectedCell.getColumn(),
lastSelectedCell.getRow(),
lastSelectedCell.getColumn(),
shiftRegion);
selectionRegionChanged(grid, shiftRegion, false);
// because the selectionModel is cleared and made from scratch
// keep a reference to first and last selected cells
selectionModel.setFirstCell(firstSelectedCell);
selectionModel.setLastCell(new Cell(row, column));
}
} else {
shiftRegion = null;
SpanModel spanModel = grid.getSpanModel();
if (spanModel.isCellSpan(row, column)) {
CellSpan span = spanModel.getSpanOver(row, column);
row = span.getRow();
column = span.getColumn();
if ((dx > 0) && (span.getColumnCount() > 1)) {
column = span.getLastColumn();
}
if ((dy > 0) && (span.getRowCount() > 1)) {
row = span.getLastRow();
}
}
row = clipToRange(row + dy, 0, grid.getRowCount());
column = clipToRange(column + dx, 0, grid.getColumnCount());
selectionModel.clearSelection();
if (!grid.isCellSpan(row, column)) {
selectionModel.addSelectionCell(new Cell(row, column));
} else {
CellSpan span = spanModel.getSpanOver(row, column);
List<Cell> cells = new ArrayList<Cell>();
for (int i = 0; i < span.getRowCount(); i++) {
for (int j = 0; j < span.getColumnCount(); j++) {
cells.add(new Cell(span.getRow() + i, span.getColumn() + j));
}
}
selectionModel.addSelectionCells(cells);
}
}
}