/**
* Copyright (c) 2012, University of Konstanz, Distributed Systems Group
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the University of Konstanz nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.jscsi.whiskas.views;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ControlEvent;
import org.eclipse.swt.events.ControlListener;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.layout.RowData;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.part.ViewPart;
/** This class provides a legend for the visualizations.
* @author Halld�r Janetzko
*/
public class Legend extends ViewPart implements ControlListener {
/**Colormap for Visualization.*/
private ColorMap cm;
/**Parent shell of view.*/
private Composite topshell;
/**Canvas for painting of labels and legend.*/
private Canvas c, c2;
/**
* Method which is always executed by the Activator class
* and builds the GUI.
* @param parent the parent of the Pattern view.
*/
public final void createPartControl(final Composite parent) {
cm = new ColorMap(parent.getDisplay());
this.topshell = parent;
c = new Canvas(parent, SWT.BORDER | SWT.DOUBLE_BUFFERED);
c.addPaintListener(new PaintListener()
{
public void paintControl(final PaintEvent e) {
paintLabel(e.gc);
}
});
c2 = new Canvas(parent, SWT.BORDER | SWT.DOUBLE_BUFFERED);
c2.addPaintListener(new PaintListener()
{
public void paintControl(final PaintEvent e) {
paintPattern(e.gc);
}
});
parent.addControlListener(this);
RowLayout rl = new RowLayout();
rl.type = SWT.VERTICAL;
rl.wrap = false;
rl.justify = true;
parent.setLayout(rl);
}
/**
* Implements WorkbenchPart.setFocus (not used).
*/
public void setFocus() { }
/**
* Method to paint labels.
* @param gc - the grafic context to paint on
*/
public final void paintLabel(final GC gc) {
gc.setForeground(topshell.getDisplay().getSystemColor(SWT.COLOR_BLACK));
gc.drawString("untouched", 125, 1);
gc.drawLine(125, 30, 140, 15);
gc.drawString("touched", 165, 15);
gc.drawLine(140, 30, 160, 25);
gc.drawString("recently touched (few touches)", 205, 1);
gc.drawString("recently touched (many touches)",
c.getClientArea().width
- gc.getFontMetrics().getAverageCharWidth()
* "recently touched (many touches)".length(), 8);
}
/**
* Method to paint patterns of different types.
* @param gc - grafic context to paint on
*/
public final void paintPattern(final GC gc) {
int height = c2.getClientArea().height / (cm.color.length - 1);
String[] s = {"Free Block", "Root Block", "Positional BTree Block",
"Keyed Trie Block", "Keyed BTree Block",
"Node Block", "Name Block", "Value Block",
"Histogram", "Unknown Block"};
for (int i = 0; i < cm.color.length - 1; i++) {
int width = (c2.getClientArea().width - 120) / (cm.color[i].length);
for (int j = 0; j < cm.color[i].length; j++) {
gc.setBackground(cm.color[i][j]);
gc.fillRectangle(j * width + 120, i * height, width, height);
int xPos = j * width + 120;
int yPos = i * height;
if (j == 0 && i != 8) {
gc.setBackground(cm.color[i][99]);
gc.fillRectangle((int) (xPos + 0.5 * width
- 0.3 * width / 2.0),
(int) (yPos + 0.5 * height - 0.3 * height / 2.0),
(int) (0.3 * width) + 1,
(int) (0.3 * height) + 1);
}
if (j == 1 && i != 8) {
gc.setBackground(cm.color[i][99]);
gc.fillRectangle(xPos, yPos, width, height);
gc.setBackground(cm.color[i][j]);
gc.fillRectangle((int) (xPos + 0.5 * width
- 0.3 * width / 2.0),
(int) (yPos + 0.5 * height - 0.3 * height / 2.0),
(int) (0.3 * width) + 1,
(int) (0.3 * height) + 1);
}
if (j != 0 && j !=1 && i != 8) {
gc.setBackground(cm.color[i][99]);
int[] points = new int[6];
points[0] = xPos;
points[2] = xPos + width;
points[4] = xPos + width;
points[1] = yPos;
points[3] = yPos;
points[5] = yPos + height;
gc.fillPolygon(points);
}
gc.setForeground(
topshell.getDisplay().getSystemColor(SWT.COLOR_BLACK));
gc.setBackground(
topshell.getDisplay().getSystemColor(SWT.COLOR_WHITE));
gc.drawString(s[i], 2, yPos);
}
}
}
/**
* Method which is not used by Legend.
* @param e ControlEvent
*/
public void controlMoved(final ControlEvent e) { }
/**
* Method which orders repainting of the legend.
* @param e ControlEvent
*/
public final void controlResized(final ControlEvent e) {
c2.setLayoutData(new RowData(topshell.getClientArea().width - 10,
topshell.getClientArea().height - 50));
c2.redraw();
c.setLayoutData(new RowData(topshell.getClientArea().width - 10, 30));
c.redraw();
}
}