/*
* ARX: Powerful Data Anonymization
* Copyright 2012 - 2017 Fabian Prasser, Florian Kohlmayer and contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.deidentifier.arx.gui.view.impl.common.datatable;
import java.util.List;
import org.eclipse.nebula.widgets.nattable.config.IConfigRegistry;
import org.eclipse.nebula.widgets.nattable.layer.cell.ILayerCell;
import org.eclipse.nebula.widgets.nattable.painter.cell.CellPainterWrapper;
import org.eclipse.nebula.widgets.nattable.painter.cell.ICellPainter;
import org.eclipse.nebula.widgets.nattable.style.BorderStyle;
import org.eclipse.nebula.widgets.nattable.style.BorderStyle.LineStyleEnum;
import org.eclipse.nebula.widgets.nattable.style.CellStyleAttributes;
import org.eclipse.nebula.widgets.nattable.style.CellStyleUtil;
import org.eclipse.nebula.widgets.nattable.style.IStyle;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
/**
* A table decorator. Based on code from Dirk Fauth.
* @author Dirk Fauth
* @author Fabian Prasser
*/
public class DataTableDecorator extends CellPainterWrapper {
/**
* Label for adding a border at the top of a cell.
*/
public static final String TOP_LINE_BORDER_LABEL = "topLineBorderLabel"; //$NON-NLS-1$
/**
* Label for adding a border at the bottom of a cell.
*/
public static final String BOTTOM_LINE_BORDER_LABEL = "bottomLineBorderLabel"; //$NON-NLS-1$
/**
* Label for adding a border at the left of a cell.
*/
public static final String LEFT_LINE_BORDER_LABEL = "leftLineBorderLabel"; //$NON-NLS-1$
/**
* Label for adding a border at the right of a cell.
*/
public static final String RIGHT_LINE_BORDER_LABEL = "rightLineBorderLabel"; //$NON-NLS-1$
/**
* The default border style which will be used if no border style is
* configured via cell style configuration. Can be <code>null</code> if
* there should be no border rendered by default.
*/
private final BorderStyle defaultBorderStyle;
/**
* Creates a new LabelLineBorderDecorator wrapping the given interior
* painter and no default border style.
*
* @param interiorPainter
* The painter to be wrapped by this decorator.
*/
public DataTableDecorator(ICellPainter interiorPainter) {
this(interiorPainter, null);
}
/**
* Creates a new LabelLineBorderDecorator wrapping the given interior
* painter using the given BorderStyle as default.
*
* @param interiorPainter
* The painter to be wrapped by this decorator.
* @param defaultBorderStyle
* The BorderStyle to use as default if there is no BorderStyle
* configured via cell styles. Can be <code>null</code>.
*/
public DataTableDecorator(ICellPainter interiorPainter, BorderStyle defaultBorderStyle) {
super(interiorPainter);
this.defaultBorderStyle = defaultBorderStyle;
}
@Override
public int getPreferredHeight(ILayerCell cell, GC gc, IConfigRegistry configRegistry) {
BorderStyle borderStyle = getBorderStyle(cell, configRegistry);
int borderThickness = borderStyle != null ? borderStyle.getThickness() : 0;
int borderLineCount = 0;
// check how many border lines are configured for that cell
List<String> labels = cell.getConfigLabels().getLabels();
if (labels.contains(TOP_LINE_BORDER_LABEL)) borderLineCount++;
if (labels.contains(BOTTOM_LINE_BORDER_LABEL)) borderLineCount++;
return super.getPreferredHeight(cell, gc, configRegistry) + (borderThickness * borderLineCount);
}
@Override
public int getPreferredWidth(ILayerCell cell, GC gc, IConfigRegistry configRegistry) {
BorderStyle borderStyle = getBorderStyle(cell, configRegistry);
int borderThickness = borderStyle != null ? borderStyle.getThickness() : 0;
int borderLineCount = 0;
// check how many border lines are configured for that cell
List<String> labels = cell.getConfigLabels().getLabels();
if (labels.contains(RIGHT_LINE_BORDER_LABEL)) borderLineCount++;
if (labels.contains(LEFT_LINE_BORDER_LABEL)) borderLineCount++;
return super.getPreferredWidth(cell, gc, configRegistry) + (borderThickness * borderLineCount);
}
@Override
public void paintCell(ILayerCell cell, GC gc, Rectangle rectangle, IConfigRegistry configRegistry) {
BorderStyle borderStyle = getBorderStyle(cell, configRegistry);
int borderThickness = borderStyle != null ? borderStyle.getThickness() : 0;
// check how many border lines are configured for that cell
List<String> labels = cell.getConfigLabels().getLabels();
int leftBorderThickness = 0;
int rightBorderThickness = 0;
int topBorderThickness = 0;
int bottomBorderThickness = 0;
if (labels.contains(LEFT_LINE_BORDER_LABEL)) leftBorderThickness = borderThickness;
if (labels.contains(RIGHT_LINE_BORDER_LABEL)) rightBorderThickness = borderThickness;
if (labels.contains(TOP_LINE_BORDER_LABEL)) topBorderThickness = borderThickness;
if (labels.contains(BOTTOM_LINE_BORDER_LABEL)) bottomBorderThickness = borderThickness;
Rectangle interiorBounds = new Rectangle(rectangle.x + leftBorderThickness,
rectangle.y + topBorderThickness,
(rectangle.width - leftBorderThickness - rightBorderThickness),
(rectangle.height - topBorderThickness - bottomBorderThickness));
super.paintCell(cell, gc, interiorBounds, configRegistry);
if (borderStyle == null ||
borderThickness <= 0 ||
(leftBorderThickness == 0 && rightBorderThickness == 0 && topBorderThickness == 0 && bottomBorderThickness == 0)) { return; }
// Save GC settings
Color originalForeground = gc.getForeground();
int originalLineWidth = gc.getLineWidth();
int originalLineStyle = gc.getLineStyle();
gc.setLineWidth(borderThickness);
Rectangle borderArea = new Rectangle(rectangle.x, rectangle.y, rectangle.width, rectangle.height);
if (borderThickness >= 1) {
int shift = 0;
int correction = 0;
if ((borderThickness % 2) == 0) {
shift = borderThickness / 2;
} else {
shift = borderThickness / 2;
correction = 1;
}
if (leftBorderThickness >= 1) {
borderArea.x += shift;
borderArea.width -= shift;
}
if (rightBorderThickness >= 1) {
borderArea.width -= shift + correction;
}
if (topBorderThickness >= 1) {
borderArea.y += shift;
borderArea.height -= shift;
}
if (bottomBorderThickness >= 1) {
borderArea.height -= shift + correction;
}
}
gc.setLineStyle(LineStyleEnum.toSWT(borderStyle.getLineStyle()));
gc.setForeground(borderStyle.getColor());
// if all borders are set draw a rectangle
if (leftBorderThickness > 0 && rightBorderThickness > 0 && topBorderThickness > 0 && bottomBorderThickness > 0) {
gc.drawRectangle(borderArea);
}
// else draw a line for every set border
else {
Point topLeftPos = new Point(borderArea.x, borderArea.y);
Point topRightPos = new Point(borderArea.x + borderArea.width, borderArea.y);
Point bottomLeftPos = new Point(borderArea.x, borderArea.y + borderArea.height);
Point bottomRightPos = new Point(borderArea.x + borderArea.width, borderArea.y + borderArea.height);
if (leftBorderThickness > 0) {
gc.drawLine(topLeftPos.x, topLeftPos.y, bottomLeftPos.x, bottomLeftPos.y);
}
if (rightBorderThickness > 0) {
gc.drawLine(topRightPos.x, topRightPos.y, bottomRightPos.x, bottomRightPos.y);
}
if (topBorderThickness > 0) {
gc.drawLine(topLeftPos.x, topLeftPos.y, topRightPos.x, topRightPos.y);
}
if (bottomBorderThickness > 0) {
gc.drawLine(bottomLeftPos.x, bottomLeftPos.y, bottomRightPos.x, bottomRightPos.y);
}
}
// Restore GC settings
gc.setForeground(originalForeground);
gc.setLineWidth(originalLineWidth);
gc.setLineStyle(originalLineStyle);
}
/**
*
*
* @param cell
* @param configRegistry
* @return
*/
private BorderStyle getBorderStyle(ILayerCell cell, IConfigRegistry configRegistry) {
IStyle cellStyle = CellStyleUtil.getCellStyle(cell, configRegistry);
BorderStyle borderStyle = cellStyle.getAttributeValue(CellStyleAttributes.BORDER_STYLE);
if (borderStyle == null) {
borderStyle = this.defaultBorderStyle;
}
return borderStyle;
}
}