bundles/org.simantics.spreadsheet.ui/src/org/simantics/spreadsheet/ui/SpreadsheetTableUI.java

   1 package org.simantics.spreadsheet.ui;
   2
   3 import java.awt.Component;
   4 import java.awt.Graphics;
   5 import java.awt.Point;
   6 import java.awt.Rectangle;
   7
   8 import javax.swing.JComponent;
   9 import javax.swing.plaf.ComponentUI;
  10 import javax.swing.plaf.basic.BasicTableUI;
  11 import javax.swing.table.TableCellRenderer;
  12
  13 import org.simantics.spreadsheet.ClientModel;
  14
  15 public class SpreadsheetTableUI extends BasicTableUI {
  16
  17         @Override
  18         public void paint(Graphics g, JComponent c) {
  19                 SpreadsheetTable t = ((SpreadsheetTable)table);
  20                 ClientModel clientModel = t.getClientModel();
  21                 if (clientModel == null) return;
  22
  23                 Rectangle clip = g.getClipBounds();
  24
  25                 Point corner0 = new Point(clip.x, clip.y);
  26                 Point corner1 = new Point(new Point(clip.x + clip.width - 1, clip.y + clip.height - 1));
  27
  28                 int row0 = t.rowAtPointWithoutSpan(corner0);
  29                 if (row0 == -1) row0 = 0;
  30
  31                 int row1 = t.rowAtPointWithoutSpan(corner1);
  32                 if (row1 == -1) row1 = t.getRowCount() - 1;
  33
  34                 int col0 = t.columnAtPointWithoutSpan(corner0);
  35                 if (col0 == -1) col0 = 0;
  36
  37                 int col1 = t.columnAtPointWithoutSpan(corner1);
  38                 if (col1 == -1) col1 = t.getColumnCount() - 1;
  39
  40                 for (int row = row0; row <= row1; row++) {
  41                         for (int col = col0; col <= col1; col++) {
  42                                 Rectangle span = clientModel.getSpan(row, col);
  43                                 if (span == null) {
  44                                         paintCell(row, col, g, t.getCellRect(row, col, true));
  45                                 } else if ((col == span.x) && (row == span.y)) {
  46                                         paintCell(span.y, span.x, g, t.getCellRect(span.y, span.x, true));
  47                                 } else if ((row == row0) || (col == col0)) {
  48                                         // this condition is not optimal as it draws multi-span boundary cells many times
  49                                         paintCell(span.y, span.x, g, t.getCellRect(span.y, span.x, true));
  50                                 }
  51                         }
  52                 }
  53         }
  54
  55         private void paintCell(int row, int column, Graphics g, Rectangle rect) {
  56                 if (table.isEditing() && (table.getEditingRow() == row) && (table.getEditingColumn() == column)) {
  57                       Component component = table.getEditorComponent();
  58                       component.setBounds(rect);
  59                       component.validate();
  60             } else {
  61                         TableCellRenderer renderer = table.getCellRenderer(row, column);
  62                 Component component = table.prepareRenderer(renderer, row, column);
  63                         if (component.getParent() == null) {
  64                                 rendererPane.add(component);
  65                         }
  66                         rendererPane.paintComponent(g, component, table, rect.x, rect.y, rect.width, rect.height, false);
  67             }
  68         }
  69
  70         public static ComponentUI createUI(JComponent c) {
  71                 return new SpreadsheetTableUI();
  72         }
  73 }