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/**
* Copyright (C) 2009 - 2013 SC 4ViewSoft SRL
*
* 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 com.codename1.charts.views;
import java.util.List;
import com.codename1.charts.compat.Canvas;
import com.codename1.charts.compat.Paint;
import com.codename1.charts.compat.Paint.Style;
import com.codename1.charts.models.XYMultipleSeriesDataset;
import com.codename1.charts.renderers.SimpleSeriesRenderer;
import com.codename1.charts.renderers.XYMultipleSeriesRenderer;
import com.codename1.charts.renderers.XYSeriesRenderer;
/**
* The scatter chart rendering class.
*/
public class ScatterChart extends XYChart {
/** The constant to identify this chart type. */
public static final String TYPE = "Scatter";
/** The default point shape size. */
private static final float SIZE = 3;
/** The legend shape width. */
private static final int SHAPE_WIDTH = 10;
/** The point shape size. */
private float size = SIZE;
ScatterChart() {
}
/**
* Builds a new scatter chart instance.
*
* @param dataset the multiple series dataset
* @param renderer the multiple series renderer
*/
public ScatterChart(XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer) {
super(dataset, renderer);
size = renderer.getPointSize();
}
// TODO: javadoc
protected void setDatasetRenderer(XYMultipleSeriesDataset dataset,
XYMultipleSeriesRenderer renderer) {
super.setDatasetRenderer(dataset, renderer);
size = renderer.getPointSize();
}
/**
* The graphical representation of a series.
*
* @param canvas the canvas to paint to
* @param paint the paint to be used for drawing
* @param points the array of points to be used for drawing the series
* @param seriesRenderer the series renderer
* @param yAxisValue the minimum value of the y axis
* @param seriesIndex the index of the series currently being drawn
* @param startIndex the start index of the rendering points
*/
@Override
public void drawSeries(Canvas canvas, Paint paint, List points,
XYSeriesRenderer renderer, float yAxisValue, int seriesIndex, int startIndex) {
paint.setColor(renderer.getColor());
final float stroke = paint.getStrokeWidth();
if (renderer.isFillPoints()) {
paint.setStyle(Style.FILL);
} else {
paint.setStrokeWidth(renderer.getPointStrokeWidth());
paint.setStyle(Style.STROKE);
}
int length = points.size();
// switch on ENUM's generates reflection code that screws up J2ME
PointStyle ps = renderer.getPointStyle();
if(ps == PointStyle.X) {
paint.setStrokeWidth(renderer.getPointStrokeWidth());
for (int i = 0; i < length; i += 2) {
drawX(canvas, paint, points.get(i), points.get(i + 1));
}
} else {
if(ps == PointStyle.CIRCLE) {
for (int i = 0; i < length; i += 2) {
drawCircle(canvas, paint, points.get(i), points.get(i + 1));
}
} else {
if(ps == PointStyle.TRIANGLE) {
float[] path = new float[6];
for (int i = 0; i < length; i += 2) {
drawTriangle(canvas, paint, path, points.get(i), points.get(i + 1));
}
} else {
if(ps == PointStyle.SQUARE) {
for (int i = 0; i < length; i += 2) {
drawSquare(canvas, paint, points.get(i), points.get(i + 1));
}
} else {
if(ps == PointStyle.DIAMOND) {
float[] path = new float[8];
for (int i = 0; i < length; i += 2) {
drawDiamond(canvas, paint, path, points.get(i), points.get(i + 1));
}
} else {
if(ps == PointStyle.POINT) {
for (int i = 0; i < length; i += 2) {
canvas.drawPoint(points.get(i), points.get(i + 1), paint);
}
}
}
}
}
}
}
/*switch (renderer.getPointStyle()) {
case X:
paint.setStrokeWidth(renderer.getPointStrokeWidth());
for (int i = 0; i < length; i += 2) {
drawX(canvas, paint, points.get(i), points.get(i + 1));
}
break;
case CIRCLE:
for (int i = 0; i < length; i += 2) {
drawCircle(canvas, paint, points.get(i), points.get(i + 1));
}
break;
case TRIANGLE:
float[] path = new float[6];
for (int i = 0; i < length; i += 2) {
drawTriangle(canvas, paint, path, points.get(i), points.get(i + 1));
}
break;
case SQUARE:
for (int i = 0; i < length; i += 2) {
drawSquare(canvas, paint, points.get(i), points.get(i + 1));
}
break;
case DIAMOND:
path = new float[8];
for (int i = 0; i < length; i += 2) {
drawDiamond(canvas, paint, path, points.get(i), points.get(i + 1));
}
break;
case POINT:
for (int i = 0; i < length; i += 2) {
canvas.drawPoint(points.get(i), points.get(i + 1), paint);
}
break;
}*/
paint.setStrokeWidth(stroke);
}
@Override
protected ClickableArea[] clickableAreasForPoints(List points, List values,
float yAxisValue, int seriesIndex, int startIndex) {
int length = points.size();
ClickableArea[] ret = new ClickableArea[length / 2];
for (int i = 0; i < length; i += 2) {
int selectableBuffer = mRenderer.getSelectableBuffer();
ret[i / 2] = new ClickableArea(PkgUtils.makeRect(points.get(i) - selectableBuffer, points.get(i + 1)
- selectableBuffer, points.get(i) + selectableBuffer, points.get(i + 1)
+ selectableBuffer), values.get(i), values.get(i + 1));
}
return ret;
}
/**
* Returns the legend shape width.
*
* @param seriesIndex the series index
* @return the legend shape width
*/
public int getLegendShapeWidth(int seriesIndex) {
return SHAPE_WIDTH;
}
/**
* The graphical representation of the legend shape.
*
* @param canvas the canvas to paint to
* @param renderer the series renderer
* @param x the x value of the point the shape should be drawn at
* @param y the y value of the point the shape should be drawn at
* @param seriesIndex the series index
* @param paint the paint to be used for drawing
*/
public void drawLegendShape(Canvas canvas, SimpleSeriesRenderer renderer, float x, float y,
int seriesIndex, Paint paint) {
if (((XYSeriesRenderer) renderer).isFillPoints()) {
paint.setStyle(Style.FILL);
} else {
paint.setStyle(Style.STROKE);
}
// switch on ENUM's generates reflection code that screws up J2ME
PointStyle ps = ((XYSeriesRenderer) renderer).getPointStyle();
if(ps == PointStyle.X) {
drawX(canvas, paint, x + SHAPE_WIDTH, y);
} else {
if(ps == PointStyle.CIRCLE) {
drawCircle(canvas, paint, x + SHAPE_WIDTH, y);
} else {
if(ps == PointStyle.TRIANGLE) {
drawTriangle(canvas, paint, new float[6], x + SHAPE_WIDTH, y);
} else {
if(ps == PointStyle.SQUARE) {
drawSquare(canvas, paint, x + SHAPE_WIDTH, y);
} else {
if(ps == PointStyle.DIAMOND) {
drawDiamond(canvas, paint, new float[8], x + SHAPE_WIDTH, y);
} else {
if(ps == PointStyle.POINT) {
drawDiamond(canvas, paint, new float[8], x + SHAPE_WIDTH, y);
}
}
}
}
}
}
/*switch (((XYSeriesRenderer) renderer).getPointStyle()) {
case X:
drawX(canvas, paint, x + SHAPE_WIDTH, y);
break;
case CIRCLE:
drawCircle(canvas, paint, x + SHAPE_WIDTH, y);
break;
case TRIANGLE:
drawTriangle(canvas, paint, new float[6], x + SHAPE_WIDTH, y);
break;
case SQUARE:
drawSquare(canvas, paint, x + SHAPE_WIDTH, y);
break;
case DIAMOND:
drawDiamond(canvas, paint, new float[8], x + SHAPE_WIDTH, y);
break;
case POINT:
canvas.drawPoint(x + SHAPE_WIDTH, y, paint);
break;
}*/
}
/**
* The graphical representation of an X point shape.
*
* @param canvas the canvas to paint to
* @param paint the paint to be used for drawing
* @param x the x value of the point the shape should be drawn at
* @param y the y value of the point the shape should be drawn at
*/
private void drawX(Canvas canvas, Paint paint, float x, float y) {
canvas.drawLine(x - size, y - size, x + size, y + size, paint);
canvas.drawLine(x + size, y - size, x - size, y + size, paint);
}
/**
* The graphical representation of a circle point shape.
*
* @param canvas the canvas to paint to
* @param paint the paint to be used for drawing
* @param x the x value of the point the shape should be drawn at
* @param y the y value of the point the shape should be drawn at
*/
private void drawCircle(Canvas canvas, Paint paint, float x, float y) {
canvas.drawCircle(x, y, size, paint);
}
/**
* The graphical representation of a triangle point shape.
*
* @param canvas the canvas to paint to
* @param paint the paint to be used for drawing
* @param path the triangle path
* @param x the x value of the point the shape should be drawn at
* @param y the y value of the point the shape should be drawn at
*/
private void drawTriangle(Canvas canvas, Paint paint, float[] path, float x, float y) {
path[0] = x;
path[1] = y - size - size / 2;
path[2] = x - size;
path[3] = y + size;
path[4] = x + size;
path[5] = path[3];
drawPath(canvas, path, paint, true);
}
/**
* The graphical representation of a square point shape.
*
* @param canvas the canvas to paint to
* @param paint the paint to be used for drawing
* @param x the x value of the point the shape should be drawn at
* @param y the y value of the point the shape should be drawn at
*/
private void drawSquare(Canvas canvas, Paint paint, float x, float y) {
canvas.drawRect(x - size, y - size, x + size, y + size, paint);
}
/**
* The graphical representation of a diamond point shape.
*
* @param canvas the canvas to paint to
* @param paint the paint to be used for drawing
* @param path the diamond path
* @param x the x value of the point the shape should be drawn at
* @param y the y value of the point the shape should be drawn at
*/
private void drawDiamond(Canvas canvas, Paint paint, float[] path, float x, float y) {
path[0] = x;
path[1] = y - size;
path[2] = x - size;
path[3] = y;
path[4] = x;
path[5] = y + size;
path[6] = x + size;
path[7] = y;
drawPath(canvas, path, paint, true);
}
/**
* Returns the chart type identifier.
*
* @return the chart type
*/
public String getChartType() {
return TYPE;
}
}
