Java tutorial
/**************************************************************************************** * Copyright (c) 2011 Norbert Nagold <norbert.nagold@gmail.com> * * Copyright (c) 2014 Michael Goldbach <trashcutter@googlemail.com> * * * * This program is free software; you can redistribute it and/or modify it under * * the terms of the GNU General Public License as published by the Free Software * * Foundation; either version 3 of the License, or (at your option) any later * * version. * * * * This program is distributed in the hope that it will be useful, but WITHOUT ANY * * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A * * PARTICULAR PURPOSE. See the GNU General Public License for more details. * * * * You should have received a copy of the GNU General Public License along with * * this program. If not, see <http://www.gnu.org/licenses/>. * ****************************************************************************************/ package com.wildplot.android.ankistats; import android.database.Cursor; import android.graphics.Bitmap; import android.widget.ImageView; import com.wildplot.android.rendering.*; import com.wildplot.android.rendering.graphics.wrapper.BufferedImage; import com.wildplot.android.rendering.graphics.wrapper.Color; import com.wildplot.android.rendering.graphics.wrapper.Graphics2D; import com.wildplot.android.rendering.graphics.wrapper.Rectangle; import org.json.JSONException; import org.json.JSONObject; import java.util.*; /** * Created by mig on 06.07.2014. */ public class AnswerButton { private AnkiDb mAnkiDb; private ImageView mImageView; private CollectionData mCollectionData; private int mFrameThickness = 60; private int targetPixelDistanceBetweenTics = 150; private int mMaxCards = 0; private int mMaxElements = 0; private int mType; private int mTitle; private boolean mBackwards; private int[] mValueLabels; private int[] mColors; private int[] mAxisTitles; private double[][] mSeriesList; private double mBarThickness = 0.8; private double[][] mCumulative; public AnswerButton(AnkiDb ankiDb, ImageView imageView, CollectionData collectionData) { mAnkiDb = ankiDb; mImageView = imageView; mCollectionData = collectionData; } public Bitmap renderChart(int type) { calculateAnswerButtons(type); int height = mImageView.getMeasuredHeight(); int width = mImageView.getMeasuredWidth(); if (height <= 0 || width <= 0) { return null; } BufferedImage bufferedFrameImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); Graphics2D g = bufferedFrameImage.createGraphics(); Rectangle rect = new Rectangle(width, height); g.setClip(rect); g.setColor(Color.BLACK); float textSize = AnkiStatsApplication.getInstance().getmStandardTextSize() * 0.75f; g.setFontSize(textSize); float FontHeigth = g.getFontMetrics().getHeight(true); mFrameThickness = Math.round(FontHeigth * 4.0f); //System.out.println("frame thickness: " + mFrameThickness); PlotSheet plotSheet = new PlotSheet(0, 15, 0, mMaxCards * 1.03); plotSheet.setFrameThickness(mFrameThickness); //no title because of tab title //plotSheet.setTitle(mImageView.getResources().getString(mTitle)); double xTics = ticsCalcX(targetPixelDistanceBetweenTics, rect); double yTics = ticsCalcY(targetPixelDistanceBetweenTics, rect); XAxis xaxis = new XAxis(plotSheet, 0, xTics, xTics / 2.0); YAxis yaxis = new YAxis(plotSheet, 0, yTics, yTics / 2.0); double[] timePositions = { 1, 2, 3, 6, 7, 8, 9, 11, 12, 13, 14 }; xaxis.setExplicitTics(timePositions, mImageView.getResources().getStringArray(R.array.stats_eases_ticks)); xaxis.setOnFrame(); xaxis.setName(mImageView.getResources().getString(mAxisTitles[0])); xaxis.setIntegerNumbering(true); yaxis.setIntegerNumbering(true); yaxis.setName(mImageView.getResources().getString(mAxisTitles[1])); yaxis.setOnFrame(); BarGraph[] barGraphs = new BarGraph[mSeriesList.length - 1]; for (int i = 1; i < mSeriesList.length; i++) { double[][] bars = new double[2][]; bars[0] = mSeriesList[0]; bars[1] = mSeriesList[i]; barGraphs[i - 1] = new BarGraph(plotSheet, mBarThickness, bars, new Color(mImageView.getResources().getColor(mColors[i - 1]))); barGraphs[i - 1].setFilling(true); barGraphs[i - 1].setName(mImageView.getResources().getString(mValueLabels[i - 1])); //barGraph.setFillColor(Color.GREEN.darker()); barGraphs[i - 1].setFillColor(new Color(mImageView.getResources().getColor(mColors[i - 1]))); } PlotSheet hiddenPlotSheet = new PlotSheet(0, 15, 0, 101); //for second y-axis hiddenPlotSheet.setFrameThickness(mFrameThickness); Lines[] lineses = new Lines[mCumulative.length - 1]; for (int i = 1; i < mCumulative.length; i++) { double[][] cumulatives = new double[][] { mCumulative[0], mCumulative[i] }; lineses[i - 1] = new Lines(hiddenPlotSheet, cumulatives, new Color(mImageView.getResources().getColor(mColors[i - 1]))); lineses[i - 1].setSize(3f); lineses[i - 1].setShadow(5f, 3f, 3f, Color.BLACK); //No names to prevent double entries in legend: //lineses[i-1].setName(mImageView.getResources().getString(R.string.stats_cumulative)); } double rightYtics = ticsCalc(targetPixelDistanceBetweenTics, rect, 101); YAxis rightYaxis = new YAxis(hiddenPlotSheet, 0, rightYtics, rightYtics / 2.0); rightYaxis.setIntegerNumbering(true); rightYaxis.setName(mImageView.getResources().getString(mAxisTitles[2])); rightYaxis.setOnRightSideFrame(); int red = Color.LIGHT_GRAY.getRed(); int green = Color.LIGHT_GRAY.getGreen(); int blue = Color.LIGHT_GRAY.getBlue(); Color newGridColor = new Color(red, green, blue, 222); XGrid xGrid = new XGrid(plotSheet, 0, targetPixelDistanceBetweenTics); YGrid yGrid = new YGrid(plotSheet, 0, targetPixelDistanceBetweenTics); xGrid.setColor(newGridColor); yGrid.setColor(newGridColor); yGrid.setExplicitTics(timePositions); plotSheet.setFontSize(textSize); for (BarGraph barGraph : barGraphs) { plotSheet.addDrawable(barGraph); } for (Lines lines : lineses) { plotSheet.addDrawable(lines); } plotSheet.addDrawable(xaxis); plotSheet.addDrawable(yaxis); plotSheet.addDrawable(rightYaxis); plotSheet.addDrawable(xGrid); plotSheet.addDrawable(yGrid); plotSheet.paint(g); Bitmap bitmap = bufferedFrameImage.getBitmap(); bitmap.prepareToDraw(); return bitmap; } public boolean calculateAnswerButtons(int type) { mTitle = R.string.stats_answer_buttons; mAxisTitles = new int[] { R.string.stats_answer_type, R.string.stats_answers, R.string.stats_cumulative_correct_percentage }; mValueLabels = new int[] { R.string.statistics_learn, R.string.statistics_young, R.string.statistics_mature }; mColors = new int[] { R.color.stats_learn, R.color.stats_young, R.color.stats_mature }; mType = type; String lim = _revlogLimitWholeOnly().replaceAll("[\\[\\]]", ""); String lims = ""; //TODO when non whole collection selection is possible test this! int days = 0; if (lim.length() > 0) lims += lim + " and "; if (type == Utils.TYPE_MONTH) days = 30; else if (type == Utils.TYPE_YEAR) days = 365; else days = -1; if (days > 0) lims += "id > " + ((mCollectionData.getDayCutoff() - (days * 86400)) * 1000); if (lims.length() > 0) lim = "where " + lims; else lim = ""; ArrayList<double[]> list = new ArrayList<double[]>(); Cursor cur = null; String query = "select (case " + " when type in (0,2) then 0 " + " when lastIvl < 21 then 1 " + " else 2 end) as thetype, " + " (case when type in (0,2) and ease = 4 then 3 else ease end), count() from revlog " + lim + " " + " group by thetype, ease " + " order by thetype, ease"; try { cur = mAnkiDb.getDatabase().rawQuery(query, null); while (cur.moveToNext()) { list.add(new double[] { cur.getDouble(0), cur.getDouble(1), cur.getDouble(2) }); } } finally { if (cur != null && !cur.isClosed()) { cur.close(); } } //TODO adjust for AnswerButton, for now only copied from intervals // small adjustment for a proper chartbuilding with achartengine // if (list.size() == 0 || list.get(0)[0] > 0) { // list.add(0, new double[] { 0, 0, 0 }); // } // if (num == -1 && list.size() < 2) { // num = 31; // } // if (type != Utils.TYPE_LIFE && list.get(list.size() - 1)[0] < num) { // list.add(new double[] { num, 0, 0 }); // } else if (type == Utils.TYPE_LIFE && list.size() < 2) { // list.add(new double[] { Math.max(12, list.get(list.size() - 1)[0] + 1), 0, 0 }); // } double[] totals = new double[3]; for (int i = 0; i < list.size(); i++) { double[] data = list.get(i); int currentType = (int) data[0]; double ease = data[1]; double cnt = data[2]; totals[currentType] += cnt; } int badNew = 0; int badYoung = 0; int badMature = 0; mSeriesList = new double[4][list.size() + 1]; for (int i = 0; i < list.size(); i++) { double[] data = list.get(i); int currentType = (int) data[0]; double ease = data[1]; double cnt = data[2]; if (currentType == 1) ease += 5; else if (currentType == 2) ease += 10; if ((int) ease == 1) { badNew = i; } if ((int) ease == 6) { badYoung = i; } if ((int) ease == 11) { badMature = i; } mSeriesList[0][i] = ease; mSeriesList[1 + currentType][i] = cnt; if (cnt > mMaxCards) mMaxCards = (int) cnt; } mSeriesList[0][list.size()] = 15; mCumulative = new double[4][]; mCumulative[0] = mSeriesList[0]; mCumulative[1] = Utils.createCumulativeInPercent(mSeriesList[1], totals[0], badNew); mCumulative[2] = Utils.createCumulativeInPercent(mSeriesList[2], totals[1], badYoung); mCumulative[3] = Utils.createCumulativeInPercent(mSeriesList[3], totals[2], badMature); mMaxElements = 15; //bars are positioned from 1 to 14 return list.size() > 0; } public double ticsCalcX(int pixelDistance, Rectangle field) { double deltaRange = mMaxElements - 0; int ticlimit = field.width / pixelDistance; double tics = Math.pow(10, (int) Math.log10(deltaRange / ticlimit)); while (2.0 * (deltaRange / (tics)) <= ticlimit) { tics /= 2.0; } while ((deltaRange / (tics)) / 2 >= ticlimit) { tics *= 2.0; } return tics; } public double ticsCalcY(int pixelDistance, Rectangle field) { double deltaRange = mMaxCards - 0; int ticlimit = field.height / pixelDistance; double tics = Math.pow(10, (int) Math.log10(deltaRange / ticlimit)); while (2.0 * (deltaRange / (tics)) <= ticlimit) { tics /= 2.0; } while ((deltaRange / (tics)) / 2 >= ticlimit) { tics *= 2.0; } return tics; } public double ticsCalc(int pixelDistance, Rectangle field, double deltaRange) { int ticlimit = field.height / pixelDistance; double tics = Math.pow(10, (int) Math.log10(deltaRange / ticlimit)); while (2.0 * (deltaRange / (tics)) <= ticlimit) { tics /= 2.0; } while ((deltaRange / (tics)) / 2 >= ticlimit) { tics *= 2.0; } return tics; } /** * Daily cutoff ************************************************************* ********************************** * This function uses GregorianCalendar so as to be sensitive to leap years, daylight savings, etc. */ private String _limitWholeOnly() { ArrayList<Long> ids = new ArrayList<Long>(); for (JSONObject d : mCollectionData.allDecks()) { try { ids.add(d.getLong("id")); } catch (JSONException e) { throw new RuntimeException(e); } } return Utils.ids2str(Utils.arrayList2array(ids)); } private String _revlogLimitWholeOnly() { return ""; } }