/**
* <p>Copyright: Copyright 2010</p>
* <p>Company: �������ӹɷ�����˾</p>
*/
package com.hundsun.ares.studio.ui.grid.renderer;
import org.eclipse.nebula.widgets.grid.AbstractRenderer;
import org.eclipse.nebula.widgets.grid.GridColumn;
import org.eclipse.nebula.widgets.grid.GridItem;
import org.eclipse.nebula.widgets.grid.internal.TextUtils;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.TextLayout;
/**
* ��������ͷ��ʽ����
* @author maxh
*
*/
public class RowHeaderRenderer extends AbstractRenderer
{
int leftMargin = 6;
int rightMargin = 8;
int topMargin = 3;
int bottomMargin = 3;
private TextLayout textLayout;
Color color;
public void setColor(Color color) {
this.color = color;
}
Color lineColor;
public void setLineColor(Color lineColor) {
this.lineColor = lineColor;
}
/**
* {@inheritDoc}
*/
public void paint(GC gc, Object value)
{
if(color == null){
color = getDisplay().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND);
}
if(lineColor == null){
lineColor = getDisplay().getSystemColor(SWT.COLOR_WIDGET_DARK_SHADOW);
}
GridItem item = (GridItem) value;
String text = getHeaderText(item);
gc.setFont(getDisplay().getSystemFont());
gc.setBackground(color);
if (isSelected() && item.getParent().getCellSelectionEnabled())
{
gc.setBackground(item.getParent().getCellHeaderSelectionBackground());
}
gc.fillRectangle(getBounds().x, getBounds().y, getBounds().width, getBounds().height + 1);
// if (!item.getParent().getCellSelectionEnabled())
// {
// if (isSelected())
// {
// gc.setForeground(getDisplay().getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW));
// }
// else
// {
// gc.setForeground(getDisplay().getSystemColor(SWT.COLOR_WIDGET_HIGHLIGHT_SHADOW));
// }
//
//
//
// gc.drawLine(getBounds().x, getBounds().y, getBounds().x + getBounds().width - 1,
// getBounds().y);
// gc.drawLine(getBounds().x, getBounds().y, getBounds().x, getBounds().y + getBounds().height
// - 1);
//
// if (!isSelected())
// {
// gc.setForeground(getDisplay().getSystemColor(SWT.COLOR_WIDGET_LIGHT_SHADOW));
// gc.drawLine(getBounds().x + 1, getBounds().y + 1,
// getBounds().x + getBounds().width - 2, getBounds().y + 1);
// gc.drawLine(getBounds().x + 1, getBounds().y + 1, getBounds().x + 1,
// getBounds().y + getBounds().height - 2);
// }
//
// if (isSelected())
// {
// gc.setForeground(getDisplay().getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW));
// }
// else
// {
// gc.setForeground(getDisplay().getSystemColor(SWT.COLOR_WIDGET_DARK_SHADOW));
// }
// gc.drawLine(getBounds().x + getBounds().width - 1, getBounds().y, getBounds().x
// + getBounds().width - 1,
// getBounds().y + getBounds().height - 1);
// gc.drawLine(getBounds().x, getBounds().y + getBounds().height - 1, getBounds().x
// + getBounds().width - 1,
// getBounds().y + getBounds().height - 1);
//
// if (!isSelected())
// {
// gc.setForeground(getDisplay().getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW));
// gc.drawLine(getBounds().x + getBounds().width - 2, getBounds().y + 1,
// getBounds().x + getBounds().width - 2, getBounds().y + getBounds().height
// - 2);
// gc.drawLine(getBounds().x + 1, getBounds().y + getBounds().height - 2,
// getBounds().x + getBounds().width - 2, getBounds().y + getBounds().height
// - 2);
// }
// }
// else
// {
gc.setForeground(lineColor);
gc.drawLine(getBounds().x + getBounds().width - 1, getBounds().y, getBounds().x
+ getBounds().width - 1,
getBounds().y + getBounds().height - 1);
gc.drawLine(getBounds().x, getBounds().y + getBounds().height - 1, getBounds().x
+ getBounds().width - 1,
getBounds().y + getBounds().height - 1);
// }
int x = leftMargin;
Image image = getHeaderImage(item);
if( image != null ) {
if( isSelected() && !item.getParent().getCellSelectionEnabled() ) {
gc.drawImage(image, x + 1, getBounds().y + 1 + (getBounds().height - image.getBounds().height)/2);
x += 1;
} else {
gc.drawImage(image, x, getBounds().y + (getBounds().height - image.getBounds().height)/2);
}
x += image.getBounds().width + 5;
}
int width = getBounds().width - x;
width -= rightMargin;
Color foreground = getHeaderForeground(item);
if( foreground == null ) {
foreground = getDisplay().getSystemColor(SWT.COLOR_WIDGET_FOREGROUND);
}
gc.setForeground(foreground);
int y = getBounds().y;
int selectionOffset = 0;
if (isSelected() && !item.getParent().getCellSelectionEnabled())
{
selectionOffset = 1;
}
if (!item.getParent().isWordWrapHeader())
{
y += (getBounds().height - gc.stringExtent(text).y) / 2;
gc.drawString(TextUtils.getShortString(gc, text, width), getBounds().x + x + selectionOffset, y + selectionOffset, true);
}
else
{
getTextLayout(gc, item);
textLayout.setWidth(width < 1 ? 1 : width);
textLayout.setText(text);
if (item.getParent().isAutoHeight())
{
// Look through all columns to get the max height needed for this item
int columnCount = item.getParent().getColumnCount();
int maxHeight = textLayout.getBounds().height + topMargin + bottomMargin;
for (int i=0; i<columnCount; i++)
{
GridColumn column = item.getParent().getColumn(i);
if (column.getWordWrap())
{
int height = column.getCellRenderer().computeSize(gc, column.getWidth(), SWT.DEFAULT, item).y;
maxHeight = Math.max(maxHeight, height);
}
}
if (maxHeight != item.getHeight())
{
item.setHeight(maxHeight);
}
}
textLayout.draw(gc, getBounds().x + x + selectionOffset, y + selectionOffset);
}
}
/**
* {@inheritDoc}
*/
public Point computeSize(GC gc, int wHint, int hHint, Object value)
{
GridItem item = (GridItem) value;
String text = getHeaderText(item);
Image image = getHeaderImage(item);
int x = 0;
x += leftMargin;
if( image != null ) {
x += image.getBounds().width + 5;
}
x += gc.stringExtent(text).x + rightMargin;
int y = 0;
y += topMargin;
if( image != null ) {
y += Math.max(gc.getFontMetrics().getHeight(),image.getBounds().height);
} else {
y += gc.getFontMetrics().getHeight();
}
y += bottomMargin;
return new Point(x, y);
}
private Image getHeaderImage(GridItem item) {
return item.getHeaderImage();
}
private String getHeaderText(GridItem item)
{
String text = item.getHeaderText();
if (text == null)
{
text = (item.getParent().indexOf(item) + 1) + "";
}
return text;
}
private Color getHeaderBackground(GridItem item) {
return item.getHeaderBackground();
}
private Color getHeaderForeground(GridItem item) {
return item.getHeaderForeground();
}
private void getTextLayout(GC gc, GridItem gridItem)
{
if (textLayout == null)
{
textLayout = new TextLayout(gc.getDevice());
textLayout.setFont(gc.getFont());
gridItem.getParent().addDisposeListener(new DisposeListener()
{
public void widgetDisposed(DisposeEvent e)
{
textLayout.dispose();
}
});
}
}
}