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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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*/
package com.google.refine.browsing.facets;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.geom.AffineTransform;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import com.google.refine.browsing.RecordVisitor;
import com.google.refine.browsing.RowVisitor;
import com.google.refine.model.Cell;
import com.google.refine.model.Project;
import com.google.refine.model.Record;
import com.google.refine.model.Row;
public class ScatterplotDrawingRowVisitor implements RowVisitor, RecordVisitor {
int col_x;
int col_y;
int dim_x;
int dim_y;
double l;
double dot;
double min_x;
double max_x;
double min_y;
double max_y;
BufferedImage image;
Graphics2D g2;
AffineTransform r;
public ScatterplotDrawingRowVisitor(
int col_x, int col_y, double min_x, double max_x, double min_y, double max_y,
int size, int dim_x, int dim_y, int rotation, double dot, Color color)
{
this.col_x = col_x;
this.col_y = col_y;
this.min_x = min_x;
this.min_y = min_y;
this.max_x = max_x;
this.max_y = max_y;
this.dot = dot;
this.dim_x = dim_x;
this.dim_y = dim_y;
l = size;
r = ScatterplotFacet.createRotationMatrix(rotation, l);
image = new BufferedImage(size, size, BufferedImage.TYPE_4BYTE_ABGR);
g2 = (Graphics2D) image.getGraphics();
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g2.setStroke(new BasicStroke(1.0f));
AffineTransform t = AffineTransform.getTranslateInstance(0, l);
t.scale(1, -1);
g2.setTransform(t);
g2.setColor(color);
g2.setPaint(color);
if (r != null) {
/*
* Fill in the negative quadrants to give a hint of how the plot has been rotated.
*/
Graphics2D g2r = (Graphics2D) g2.create();
g2r.transform(r);
g2r.setPaint(Color.lightGray);
g2r.fillRect(-size, 0, size, size);
g2r.fillRect(0, -size, size, size);
g2r.dispose();
}
}
public void setColor(Color color) {
g2.setColor(color);
g2.setPaint(color);
}
@Override
public void start(Project project) {
// nothing to do
}
@Override
public void end(Project project) {
// nothing to do
}
@Override
public boolean visit(Project project, int rowIndex, Row row) {
Cell cellx = row.getCell(col_x);
Cell celly = row.getCell(col_y);
if ((cellx != null && cellx.value != null && cellx.value instanceof Number) &&
(celly != null && celly.value != null && celly.value instanceof Number))
{
double xv = ((Number) cellx.value).doubleValue();
double yv = ((Number) celly.value).doubleValue();
Point2D.Double p = new Point2D.Double(xv,yv);
p = ScatterplotFacet.translateCoordinates(
p, min_x, max_x, min_y, max_y, dim_x, dim_y, l, r);
g2.fill(new Rectangle2D.Double(p.x - dot / 2, p.y - dot / 2, dot, dot));
}
return false;
}
@Override
public boolean visit(Project project, Record record) {
for (int r = record.fromRowIndex; r < record.toRowIndex; r++) {
visit(project, r, project.rows.get(r));
}
return false;
}
public RenderedImage getImage() {
return image;
}
}