--- /dev/null
+/**\r
+ * Copyright (C) 2009 - 2012 SC 4ViewSoft SRL\r
+ * \r
+ * Licensed under the Apache License, Version 2.0 (the "License");\r
+ * you may not use this file except in compliance with the License.\r
+ * You may obtain a copy of the License at\r
+ * \r
+ * http://www.apache.org/licenses/LICENSE-2.0\r
+ * \r
+ * Unless required by applicable law or agreed to in writing, software\r
+ * distributed under the License is distributed on an "AS IS" BASIS,\r
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
+ * See the License for the specific language governing permissions and\r
+ * limitations under the License.\r
+ */\r
+package org.achartengine.chart;\r
+\r
+import org.achartengine.model.XYMultipleSeriesDataset;\r
+import org.achartengine.model.XYValueSeries;\r
+import org.achartengine.renderer.SimpleSeriesRenderer;\r
+import org.achartengine.renderer.XYMultipleSeriesRenderer;\r
+import org.achartengine.renderer.XYSeriesRenderer;\r
+\r
+import android.graphics.Canvas;\r
+import android.graphics.Paint;\r
+import android.graphics.Paint.Style;\r
+import android.graphics.RectF;\r
+\r
+/**\r
+ * The bubble chart rendering class.\r
+ */\r
+public class BubbleChart extends XYChart {\r
+ /** The constant to identify this chart type. */\r
+ public static final String TYPE = "Bubble";\r
+ /** The legend shape width. */\r
+ private static final int SHAPE_WIDTH = 10;\r
+ /** The minimum bubble size. */\r
+ private static final int MIN_BUBBLE_SIZE = 2;\r
+ /** The maximum bubble size. */\r
+ private static final int MAX_BUBBLE_SIZE = 20;\r
+\r
+ BubbleChart() {\r
+ }\r
+\r
+ /**\r
+ * Builds a new bubble chart instance.\r
+ * \r
+ * @param dataset the multiple series dataset\r
+ * @param renderer the multiple series renderer\r
+ */\r
+ public BubbleChart(XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer) {\r
+ super(dataset, renderer);\r
+ }\r
+\r
+ /**\r
+ * The graphical representation of a series.\r
+ * \r
+ * @param canvas the canvas to paint to\r
+ * @param paint the paint to be used for drawing\r
+ * @param points the array of points to be used for drawing the series\r
+ * @param seriesRenderer the series renderer\r
+ * @param yAxisValue the minimum value of the y axis\r
+ * @param seriesIndex the index of the series currently being drawn\r
+ * @param startIndex the start index of the rendering points\r
+ */\r
+ public void drawSeries(Canvas canvas, Paint paint, float[] points,\r
+ SimpleSeriesRenderer seriesRenderer, float yAxisValue, int seriesIndex, int startIndex) {\r
+ XYSeriesRenderer renderer = (XYSeriesRenderer) seriesRenderer;\r
+ paint.setColor(renderer.getColor());\r
+ paint.setStyle(Style.FILL);\r
+ int length = points.length;\r
+ XYValueSeries series = (XYValueSeries) mDataset.getSeriesAt(seriesIndex);\r
+ double max = series.getMaxValue();\r
+ double coef = MAX_BUBBLE_SIZE / max;\r
+ for (int i = 0; i < length; i += 2) {\r
+ double size = series.getValue(startIndex + i / 2) * coef + MIN_BUBBLE_SIZE;\r
+ drawCircle(canvas, paint, points[i], points[i + 1], (float) size);\r
+ }\r
+ }\r
+\r
+ @Override\r
+ protected ClickableArea[] clickableAreasForPoints(float[] points, double[] values,\r
+ float yAxisValue, int seriesIndex, int startIndex) {\r
+ int length = points.length;\r
+ XYValueSeries series = (XYValueSeries) mDataset.getSeriesAt(seriesIndex);\r
+ double max = series.getMaxValue();\r
+ double coef = MAX_BUBBLE_SIZE / max;\r
+ ClickableArea[] ret = new ClickableArea[length / 2];\r
+ for (int i = 0; i < length; i += 2) {\r
+ double size = series.getValue(startIndex + i / 2) * coef + MIN_BUBBLE_SIZE;\r
+ ret[i / 2] = new ClickableArea(new RectF(points[i] - (float) size, points[i + 1]\r
+ - (float) size, points[i] + (float) size, points[i + 1] + (float) size), values[i],\r
+ values[i + 1]);\r
+ }\r
+ return ret;\r
+ }\r
+\r
+ /**\r
+ * Returns the legend shape width.\r
+ * \r
+ * @param seriesIndex the series index\r
+ * @return the legend shape width\r
+ */\r
+ public int getLegendShapeWidth(int seriesIndex) {\r
+ return SHAPE_WIDTH;\r
+ }\r
+\r
+ /**\r
+ * The graphical representation of the legend shape.\r
+ * \r
+ * @param canvas the canvas to paint to\r
+ * @param renderer the series renderer\r
+ * @param x the x value of the point the shape should be drawn at\r
+ * @param y the y value of the point the shape should be drawn at\r
+ * @param seriesIndex the series index\r
+ * @param paint the paint to be used for drawing\r
+ */\r
+ public void drawLegendShape(Canvas canvas, SimpleSeriesRenderer renderer, float x, float y,\r
+ int seriesIndex, Paint paint) {\r
+ paint.setStyle(Style.FILL);\r
+ drawCircle(canvas, paint, x + SHAPE_WIDTH, y, 3);\r
+ }\r
+\r
+ /**\r
+ * The graphical representation of a circle point shape.\r
+ * \r
+ * @param canvas the canvas to paint to\r
+ * @param paint the paint to be used for drawing\r
+ * @param x the x value of the point the shape should be drawn at\r
+ * @param y the y value of the point the shape should be drawn at\r
+ * @param radius the bubble radius\r
+ */\r
+ private void drawCircle(Canvas canvas, Paint paint, float x, float y, float radius) {\r
+ canvas.drawCircle(x, y, radius, paint);\r
+ }\r
+\r
+ /**\r
+ * Returns the chart type identifier.\r
+ * \r
+ * @return the chart type\r
+ */\r
+ public String getChartType() {\r
+ return TYPE;\r
+ }\r
+\r
+}
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projects / debian / openrocket / blobdiff