protected void paintGrid(Graphics g, int rowMin, int rowMax, int colMin, int colMax) {
if (!grid.getShowGrid()) {
return; // do nothing
}
int y1 = grid.getRowPosition(rowMin);
int y2 = grid.getRowPosition(rowMax) + grid.getRowHeight(rowMax);
int x1 = grid.getColumnPosition(colMin);
int x2 = grid.getColumnPosition(colMax) + grid.getColumnWidth(colMax);
g.setColor(grid.getGridColor());
// Draw the horizontal lines
for (int row = rowMin; row <= rowMax; row++) {
int rowY = grid.getRowPosition(row);
g.drawLine(x1, rowY, x2, rowY);
}
g.drawLine(x1, y2, x2, y2);
// Draw the vertical gridlines
for (int col = colMin; col <= colMax; col++) {
int colX = grid.getColumnPosition(col);
g.drawLine(colX, y1, colX, y2);
}
g.drawLine(x2, y1, x2, y2);
}
public int print(Graphics g, PageFormat pageFormat, int pageIndex) throws PrinterException {
// Check there is something to print
if (pageIndex >= maxNumPage || grid.getRowCount() == 0 || grid.getColumnCount() == 0) {
return Printable.NO_SUCH_PAGE;
}
Graphics2D g2d = (Graphics2D) g;
g2d.translate((int) pageFormat.getImageableX(), (int) pageFormat.getImageableY());
int pageWidth = (int) pageFormat.getImageableWidth();
int pageHeight = (int) pageFormat.getImageableHeight();
int gridWidth = grid.getColumnModel().getTotalSize();
int gridHeight = grid.getRowModel().getTotalSize();
// Check there is something visible to print
if (gridWidth == 0 || gridHeight == 0) {
return Printable.NO_SUCH_PAGE;
}
// Calculate page to print
int pageColumn = pageIndex % pageCols;
int pageRow = pageIndex / pageCols;
// Calculate scale to make the grid fit in maxNumPage
float xFitPageScale = (pageWidth * pageCols) / (float) gridWidth;
float yFitPageScale = (pageHeight * pageRows) / (float) gridHeight;
float minScale = Math.min(xFitPageScale, yFitPageScale);
// Scale the print area
int pageX = (int) ((pageColumn * pageWidth) / minScale);
int pageY = (int) ((pageRow * pageHeight) / minScale);
pageWidth = (int) (pageWidth / minScale);
pageHeight = (int) (pageHeight / minScale);
// Get clip region for page
Point p = new Point(pageX, pageY);
int firstRow = grid.rowAtPoint(p);
int firstCol = grid.columnAtPoint(p);
int x1 = grid.getColumnPosition(firstCol);
int y1 = grid.getRowPosition(firstRow);
int x2 = x1 + pageWidth;
int y2 = y1 + pageHeight;
p = new Point(x2, y2);
int lastRow = grid.rowAtPoint(p);
int lastCol = grid.columnAtPoint(p);
if (grid.getRowPosition(lastRow) + grid.getRowHeight(lastRow) > y2) {
y2 = grid.getRowPosition(lastRow);
} else {
y2 = grid.getRowPosition(lastRow) + grid.getRowHeight(lastRow);
}
if (grid.getColumnPosition(lastCol) + grid.getColumnWidth(lastCol) > x2) {
x2 = grid.getColumnPosition(lastCol);
} else {
x2 = grid.getColumnPosition(lastCol) + grid.getColumnWidth(lastCol);
}
int x = x1;
int y = y1;
int width = x2 - x1;
int height = y2 - y1;
SelectionSettings selectionSettings = new SelectionSettings(grid.getSelectionModel());
selectionSettings.clear();
// Print the page
g2d.scale(minScale, minScale);
g2d.translate(-x, -y);
g2d.setClip(x, y, width, height);
grid.print(g2d);
selectionSettings.restore();
return Printable.PAGE_EXISTS;
}