private void paintBorder(Graphics g, Rectangle cellRect, int row, int column) {
if (grid.getSpanModel().isCellSpan(row, column)) {
CellSpan span = grid.getSpanModel().getSpanOver(row, column);
row = span.getRow();
column = span.getColumn();
}
// Paint border
javax.swing.border.Border border = grid.getStyleModel().getCellStyle(row, column).getBorder();
Insets borderInsets = border.getBorderInsets(grid);
Rectangle borderRect = new Rectangle(cellRect);
int topOffset = (borderInsets.top >> 1);
int leftOffset = (borderInsets.left >> 1);
int bottomOffset = (borderInsets.bottom / 3) + topOffset;
int rightOffset = (borderInsets.right / 3) + leftOffset;
borderRect.x -= leftOffset;
borderRect.y -= topOffset;
borderRect.width += rightOffset;
borderRect.height += bottomOffset;
border.paintBorder(grid, g, borderRect.x, borderRect.y, borderRect.width, borderRect.height);
}
/** Paint cell at (row, column) */
protected void paintCell(Graphics g, Rectangle cellBounds, int row, int column) {
if (grid.getEditingRow() == row && grid.getEditingColumn() == column) {
return;
}
GridCellRenderer renderer = grid.getCellRenderer(row, column);
Component rendererComp = grid.prepareRenderer(renderer, row, column);
CellSpan span = grid.getSpanModel().getSpanOver(row, column);
rendererPane.paintComponent(
g,
rendererComp,
grid,
cellBounds.x,
cellBounds.y,
cellBounds.width,
cellBounds.height,
true);
}
/** special paint handler for merged cell regions */
protected void paintSpans(Graphics g, int rowMin, int rowMax, int colMin, int colMax) {
Rectangle clip = g.getClipBounds();
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);
}
}
}
}