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Merge pull request #239 from AppDevNext/bar-rounded-corners
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Add RoundedBar renderer for corner radius positive/negative BarChart
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@hannesa2
hannesa2 authored Jun 24, 2024
2 parents 15f2ea5 + 814de5e commit 9043118
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1 change: 1 addition & 0 deletions MPChartExample/src/main/AndroidManifest.xml
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Expand Up @@ -25,6 +25,7 @@
<activity android:name="HorizontalBarChartActivity" />
<activity android:name="HorizontalBarNegativeChartActivity" />
<activity android:name="PieChartActivity" />
<activity android:name=".PieChartRoundedActivity" />
<activity android:name="PiePolylineChartActivity" />
<activity android:name="MultiLineChartActivity" />
<activity android:name="BarChartActivityMultiDataset" />
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334 changes: 334 additions & 0 deletions MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/PieChartRoundedActivity.java
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package com.xxmassdeveloper.mpchartexample;

import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Color;
import android.graphics.Typeface;
import android.net.Uri;
import android.os.Bundle;
import android.text.SpannableString;
import android.text.style.ForegroundColorSpan;
import android.text.style.RelativeSizeSpan;
import android.text.style.StyleSpan;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.WindowManager;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;

import com.github.mikephil.charting.animation.Easing;
import com.github.mikephil.charting.charts.PieChart;
import com.github.mikephil.charting.components.Legend;
import com.github.mikephil.charting.data.Entry;
import com.github.mikephil.charting.data.PieData;
import com.github.mikephil.charting.data.PieDataSet;
import com.github.mikephil.charting.data.PieEntry;
import com.github.mikephil.charting.formatter.PercentFormatter;
import com.github.mikephil.charting.highlight.Highlight;
import com.github.mikephil.charting.interfaces.datasets.IDataSet;
import com.github.mikephil.charting.listener.OnChartValueSelectedListener;
import com.github.mikephil.charting.renderer.PieChartRenderer;
import com.github.mikephil.charting.utils.ColorTemplate;
import com.github.mikephil.charting.utils.MPPointF;
import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;

import java.util.ArrayList;

import androidx.core.content.ContextCompat;

public class PieChartRoundedActivity extends DemoBase implements OnSeekBarChangeListener,
OnChartValueSelectedListener {

private PieChart chart;
private SeekBar seekBarX, seekBarY;
private TextView tvX, tvY;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_piechart);

setTitle("PieChartActivity");

tvX = findViewById(R.id.tvXMax);
tvY = findViewById(R.id.tvYMax);

seekBarX = findViewById(R.id.seekBarX);
seekBarY = findViewById(R.id.seekBarY);

seekBarX.setOnSeekBarChangeListener(this);
seekBarY.setOnSeekBarChangeListener(this);

chart = findViewById(R.id.chart1);
chart.setUsePercentValues(true);
chart.getDescription().setEnabled(false);
chart.setExtraOffsets(5, 10, 5, 5);

chart.setDragDecelerationFrictionCoef(0.95f);

chart.setCenterTextTypeface(tfLight);
chart.setCenterText(generateCenterSpannableText());

chart.setDrawHoleEnabled(true);
chart.setHoleColor(Color.TRANSPARENT);

chart.setTransparentCircleColor(Color.TRANSPARENT);
chart.setTransparentCircleAlpha(110);

chart.setHoleRadius(50f);

chart.setTransparentCircleRadius(0f);

chart.setDrawCenterText(true);

chart.setRotationAngle(0);
// enable rotation of the chart by touch
chart.setRotationEnabled(true);
chart.setHighlightPerTapEnabled(true);

// chart.setUnit(" €");
// chart.setDrawUnitsInChart(true);

// add a selection listener
chart.setOnChartValueSelectedListener(this);

seekBarX.setProgress(4);
seekBarY.setProgress(10);

chart.animateY(1400, Easing.EaseInOutQuad);
// chart.spin(2000, 0, 360);

Legend l = chart.getLegend();
l.setVerticalAlignment(Legend.LegendVerticalAlignment.TOP);
l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.RIGHT);
l.setOrientation(Legend.LegendOrientation.VERTICAL);
l.setDrawInside(false);
l.setXEntrySpace(7f);
l.setYEntrySpace(0f);
l.setYOffset(0f);

// entry label styling
chart.setEntryLabelColor(Color.WHITE);
chart.setEntryLabelTypeface(tfRegular);
chart.setEntryLabelTextSize(12f);
}

private void setData(int count, float range) {
ArrayList<PieEntry> entries = new ArrayList<>();
Double[] sampleValues = DataTools.Companion.getValues(100);

// NOTE: The order of the entries when being added to the entries array determines their position around the center of
// the chart.
for (int i = 0; i < count ; i++) {
entries.add(new PieEntry((float) ((sampleValues[i].floatValue() * range) + range / 5),
parties[i % parties.length],
getResources().getDrawable(R.drawable.star)));
}

PieDataSet dataSet = new PieDataSet(entries, "Election Results");

dataSet.setDrawIcons(false);

dataSet.setSliceSpace(3f);
dataSet.setIconsOffset(new MPPointF(0, 40));
dataSet.setSelectionShift(5f);

// add a lot of colors

ArrayList<Integer> colors = new ArrayList<>();

for (int c : ColorTemplate.VORDIPLOM_COLORS)
colors.add(c);

for (int c : ColorTemplate.JOYFUL_COLORS)
colors.add(c);

for (int c : ColorTemplate.COLORFUL_COLORS)
colors.add(c);

for (int c : ColorTemplate.LIBERTY_COLORS)
colors.add(c);

for (int c : ColorTemplate.PASTEL_COLORS)
colors.add(c);

colors.add(ColorTemplate.getHoloBlue());

dataSet.setColors(colors);
//dataSet.setSelectionShift(0f);

PieData data = new PieData(dataSet);
data.setValueFormatter(new PercentFormatter());
data.setValueTextSize(11f);
data.setValueTextColor(Color.WHITE);
data.setValueTypeface(tfLight);
chart.setData(data);

// undo all highlights
chart.highlightValues(null);

PieChartRenderer renderer =(PieChartRenderer) chart.getRenderer();
renderer.setRoundedCornerRadius(30f);
dataSet.setSliceSpace(renderer.getRoundedCornerRadius()/2);

chart.invalidate();
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.pie, menu);
return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {

switch (item.getItemId()) {
case R.id.viewGithub: {
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse("https://github.com/AppDevNext/AndroidChart/blob/master/MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/PieChartActivity.java"));
startActivity(i);
break;
}
case R.id.actionToggleValues: {
for (IDataSet<?> set : chart.getData().getDataSets())
set.setDrawValues(!set.isDrawValuesEnabled());

chart.invalidate();
break;
}
case R.id.actionToggleIcons: {
for (IDataSet<?> set : chart.getData().getDataSets())
set.setDrawIcons(!set.isDrawIconsEnabled());

chart.invalidate();
break;
}
case R.id.actionToggleHole: {
if (chart.isDrawHoleEnabled())
chart.setDrawHoleEnabled(false);
else
chart.setDrawHoleEnabled(true);
chart.invalidate();
break;
}
case R.id.actionToggleMinAngles: {
if (chart.getMinAngleForSlices() == 0f)
chart.setMinAngleForSlices(36f);
else
chart.setMinAngleForSlices(0f);
chart.notifyDataSetChanged();
chart.invalidate();
break;
}
case R.id.actionToggleCurvedSlices: {
boolean toSet = !chart.isDrawRoundedSlicesEnabled() || !chart.isDrawHoleEnabled();
chart.setDrawRoundedSlices(toSet);
if (toSet && !chart.isDrawHoleEnabled()) {
chart.setDrawHoleEnabled(true);
}
if (toSet && chart.isDrawSlicesUnderHoleEnabled()) {
chart.setDrawSlicesUnderHole(false);
}
chart.invalidate();
break;
}
case R.id.actionDrawCenter: {
if (chart.isDrawCenterTextEnabled())
chart.setDrawCenterText(false);
else
chart.setDrawCenterText(true);
chart.invalidate();
break;
}
case R.id.actionToggleXValues: {

chart.setDrawEntryLabels(!chart.isDrawEntryLabelsEnabled());
chart.invalidate();
break;
}
case R.id.actionTogglePercent:
chart.setUsePercentValues(!chart.isUsePercentValuesEnabled());
chart.invalidate();
break;
case R.id.animateX: {
chart.animateX(1400);
break;
}
case R.id.animateY: {
chart.animateY(1400);
break;
}
case R.id.animateXY: {
chart.animateXY(1400, 1400);
break;
}
case R.id.actionToggleSpin: {
chart.spin(1000, chart.getRotationAngle(), chart.getRotationAngle() + 360, Easing.EaseInOutCubic);
break;
}
case R.id.actionSave: {
if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
saveToGallery();
} else {
requestStoragePermission(chart);
}
break;
}
}
return true;
}

@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {

tvX.setText(String.valueOf(seekBarX.getProgress()));
tvY.setText(String.valueOf(seekBarY.getProgress()));

setData(seekBarX.getProgress(), seekBarY.getProgress());
}

@Override
protected void saveToGallery() {
saveToGallery(chart, "PieChartActivity");
}

private SpannableString generateCenterSpannableText() {

SpannableString s = new SpannableString("MPAndroidChart\ndeveloped by Philipp Jahoda");
s.setSpan(new RelativeSizeSpan(1.7f), 0, 14, 0);
s.setSpan(new StyleSpan(Typeface.NORMAL), 14, s.length() - 15, 0);
s.setSpan(new ForegroundColorSpan(Color.GRAY), 14, s.length() - 15, 0);
s.setSpan(new RelativeSizeSpan(.8f), 14, s.length() - 15, 0);
s.setSpan(new StyleSpan(Typeface.ITALIC), s.length() - 14, s.length(), 0);
s.setSpan(new ForegroundColorSpan(ColorTemplate.getHoloBlue()), s.length() - 14, s.length(), 0);
return s;
}

@Override
public void onValueSelected(Entry e, Highlight h) {

if (e == null)
return;
Log.i("VAL SELECTED",
"Value: " + e.getY() + ", index: " + h.getX()
+ ", DataSet index: " + h.getDataSetIndex());
}

@Override
public void onNothingSelected() {
Log.i("PieChart", "nothing selected");
}

@Override
public void onStartTrackingTouch(SeekBar seekBar) {}

@Override
public void onStopTrackingTouch(SeekBar seekBar) {}
}
1 change: 1 addition & 0 deletions MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/notimportant/MainActivity.kt
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Expand Up @@ -91,6 +91,7 @@ class MainActivity : AppCompatActivity(), OnItemClickListener {

add(19, ContentItem("Pie Charts"))
add(20, ContentItem("Basic", "Simple pie chart.", PieChartActivity::class.java))
add(20, ContentItem("Basic", "Rounded pie chart.", PieChartRoundedActivity::class.java))
add(21, ContentItem("Value Lines", "Stylish lines drawn outward from slices.", PiePolylineChartActivity::class.java))
add(22, ContentItem("Half Pie", "180° (half) pie chart.", HalfPieChartActivity::class.java))
add(23, ContentItem("Specific positions", "This demonstrates how to pass a list of specific positions for lines and labels on x and y axis", SpecificPositionsLineChartActivity::class.java))
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