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Improved negative offset for horz bar chart
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288 changes: 288 additions & 0 deletions
288
...artExample/src/com/xxmassdeveloper/mpchartexample/HorizontalBarNegativeChartActivity.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,288 @@ | ||
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| package com.xxmassdeveloper.mpchartexample; | ||
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| import android.annotation.SuppressLint; | ||
| import android.graphics.RectF; | ||
| import android.os.Bundle; | ||
| 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 android.widget.Toast; | ||
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| import com.github.mikephil.charting.charts.HorizontalBarChart; | ||
| import com.github.mikephil.charting.components.Legend; | ||
| import com.github.mikephil.charting.components.XAxis; | ||
| import com.github.mikephil.charting.components.XAxis.XAxisPosition; | ||
| import com.github.mikephil.charting.components.YAxis; | ||
| import com.github.mikephil.charting.data.BarData; | ||
| import com.github.mikephil.charting.data.BarDataSet; | ||
| import com.github.mikephil.charting.data.BarEntry; | ||
| import com.github.mikephil.charting.data.Entry; | ||
| import com.github.mikephil.charting.highlight.Highlight; | ||
| import com.github.mikephil.charting.interfaces.datasets.IBarDataSet; | ||
| import com.github.mikephil.charting.listener.OnChartValueSelectedListener; | ||
| import com.github.mikephil.charting.utils.MPPointF; | ||
| import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase; | ||
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| import java.util.ArrayList; | ||
| import java.util.List; | ||
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| public class HorizontalBarNegativeChartActivity extends DemoBase implements OnSeekBarChangeListener, | ||
| OnChartValueSelectedListener { | ||
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| protected HorizontalBarChart mChart; | ||
| private SeekBar mSeekBarX, mSeekBarY; | ||
| private TextView tvX, tvY; | ||
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| @Override | ||
| protected void onCreate(Bundle savedInstanceState) { | ||
| super.onCreate(savedInstanceState); | ||
| getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, | ||
| WindowManager.LayoutParams.FLAG_FULLSCREEN); | ||
| setContentView(R.layout.activity_horizontalbarchart); | ||
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| tvX = findViewById(R.id.tvXMax); | ||
| tvY = (TextView) findViewById(R.id.tvYMax); | ||
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| mSeekBarX = (SeekBar) findViewById(R.id.seekBar1); | ||
| mSeekBarY = (SeekBar) findViewById(R.id.seekBar2); | ||
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| mChart = (HorizontalBarChart) findViewById(R.id.chart1); | ||
| mChart.setOnChartValueSelectedListener(this); | ||
| // mChart.setHighlightEnabled(false); | ||
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| mChart.setDrawBarShadow(false); | ||
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| mChart.setDrawValueAboveBar(true); | ||
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| mChart.getDescription().setEnabled(false); | ||
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| // if more than 60 entries are displayed in the chart, no values will be | ||
| // drawn | ||
| mChart.setMaxVisibleValueCount(60); | ||
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| // scaling can now only be done on x- and y-axis separately | ||
| mChart.setPinchZoom(false); | ||
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| // draw shadows for each bar that show the maximum value | ||
| // mChart.setDrawBarShadow(true); | ||
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| mChart.setDrawGridBackground(false); | ||
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| XAxis xl = mChart.getXAxis(); | ||
| xl.setPosition(XAxisPosition.BOTTOM); | ||
| xl.setTypeface(mTfLight); | ||
| xl.setDrawAxisLine(true); | ||
| xl.setDrawGridLines(false); | ||
| xl.setGranularity(10f); | ||
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| YAxis yl = mChart.getAxisLeft(); | ||
| yl.setTypeface(mTfLight); | ||
| yl.setDrawAxisLine(true); | ||
| yl.setDrawGridLines(true); | ||
| yl.setDrawZeroLine(true); // draw a zero line | ||
| // yl.setInverted(true); | ||
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| YAxis yr = mChart.getAxisRight(); | ||
| yr.setTypeface(mTfLight); | ||
| yr.setDrawAxisLine(true); | ||
| yr.setDrawGridLines(false); | ||
| // yr.setInverted(true); | ||
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| setData(12, 50); | ||
| mChart.setFitBars(true); | ||
| mChart.animateY(2500); | ||
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| // setting data | ||
| mSeekBarY.setProgress(50); | ||
| mSeekBarX.setProgress(12); | ||
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| mSeekBarY.setOnSeekBarChangeListener(this); | ||
| mSeekBarX.setOnSeekBarChangeListener(this); | ||
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| Legend l = mChart.getLegend(); | ||
| l.setVerticalAlignment(Legend.LegendVerticalAlignment.BOTTOM); | ||
| l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.LEFT); | ||
| l.setOrientation(Legend.LegendOrientation.HORIZONTAL); | ||
| l.setDrawInside(false); | ||
| l.setFormSize(8f); | ||
| l.setXEntrySpace(4f); | ||
| } | ||
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| @Override | ||
| public boolean onCreateOptionsMenu(Menu menu) { | ||
| getMenuInflater().inflate(R.menu.bar, menu); | ||
| return true; | ||
| } | ||
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| @Override | ||
| public boolean onOptionsItemSelected(MenuItem item) { | ||
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| switch (item.getItemId()) { | ||
| case R.id.actionToggleValues: { | ||
| List<IBarDataSet> sets = mChart.getData() | ||
| .getDataSets(); | ||
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| for (IBarDataSet iSet : sets) { | ||
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| IBarDataSet set = (BarDataSet) iSet; | ||
| set.setDrawValues(!set.isDrawValuesEnabled()); | ||
| } | ||
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| mChart.invalidate(); | ||
| break; | ||
| } | ||
| case R.id.actionToggleIcons: { | ||
| List<IBarDataSet> sets = mChart.getData() | ||
| .getDataSets(); | ||
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| for (IBarDataSet iSet : sets) { | ||
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| IBarDataSet set = (BarDataSet) iSet; | ||
| set.setDrawIcons(!set.isDrawIconsEnabled()); | ||
| } | ||
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| mChart.invalidate(); | ||
| break; | ||
| } | ||
| case R.id.actionToggleHighlight: { | ||
| if(mChart.getData() != null) { | ||
| mChart.getData().setHighlightEnabled(!mChart.getData().isHighlightEnabled()); | ||
| mChart.invalidate(); | ||
| } | ||
| break; | ||
| } | ||
| case R.id.actionTogglePinch: { | ||
| if (mChart.isPinchZoomEnabled()) | ||
| mChart.setPinchZoom(false); | ||
| else | ||
| mChart.setPinchZoom(true); | ||
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| mChart.invalidate(); | ||
| break; | ||
| } | ||
| case R.id.actionToggleAutoScaleMinMax: { | ||
| mChart.setAutoScaleMinMaxEnabled(!mChart.isAutoScaleMinMaxEnabled()); | ||
| mChart.notifyDataSetChanged(); | ||
| break; | ||
| } | ||
| case R.id.actionToggleBarBorders: { | ||
| for (IBarDataSet set : mChart.getData().getDataSets()) | ||
| ((BarDataSet)set).setBarBorderWidth(set.getBarBorderWidth() == 1.f ? 0.f : 1.f); | ||
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| mChart.invalidate(); | ||
| break; | ||
| } | ||
| case R.id.animateX: { | ||
| mChart.animateX(3000); | ||
| break; | ||
| } | ||
| case R.id.animateY: { | ||
| mChart.animateY(3000); | ||
| break; | ||
| } | ||
| case R.id.animateXY: { | ||
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| mChart.animateXY(3000, 3000); | ||
| break; | ||
| } | ||
| case R.id.actionSave: { | ||
| if (mChart.saveToGallery("title" + System.currentTimeMillis(), 50)) { | ||
| Toast.makeText(getApplicationContext(), "Saving SUCCESSFUL!", | ||
| Toast.LENGTH_SHORT).show(); | ||
| } else | ||
| Toast.makeText(getApplicationContext(), "Saving FAILED!", Toast.LENGTH_SHORT) | ||
| .show(); | ||
| break; | ||
| } | ||
| } | ||
| return true; | ||
| } | ||
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| @Override | ||
| public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { | ||
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| tvX.setText("" + (mSeekBarX.getProgress() + 1)); | ||
| tvY.setText("" + (mSeekBarY.getProgress())); | ||
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| setData(mSeekBarX.getProgress() + 1, mSeekBarY.getProgress()); | ||
| mChart.setFitBars(true); | ||
| mChart.invalidate(); | ||
| } | ||
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| @Override | ||
| public void onStartTrackingTouch(SeekBar seekBar) { | ||
| // TODO Auto-generated method stub | ||
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| } | ||
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| @Override | ||
| public void onStopTrackingTouch(SeekBar seekBar) { | ||
| // TODO Auto-generated method stub | ||
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| } | ||
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| private void setData(int count, float range) { | ||
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| float barWidth = 9f; | ||
| float spaceForBar = 10f; | ||
| ArrayList<BarEntry> yVals1 = new ArrayList<BarEntry>(); | ||
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| for (int i = 0; i < count; i++) { | ||
| float val = (float) (Math.random() * range - range / 2); | ||
| yVals1.add(new BarEntry(i * spaceForBar, val, | ||
| getResources().getDrawable(R.drawable.star))); | ||
| } | ||
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| BarDataSet set1; | ||
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| if (mChart.getData() != null && | ||
| mChart.getData().getDataSetCount() > 0) { | ||
| set1 = (BarDataSet)mChart.getData().getDataSetByIndex(0); | ||
| set1.setValues(yVals1); | ||
| mChart.getData().notifyDataChanged(); | ||
| mChart.notifyDataSetChanged(); | ||
| } else { | ||
| set1 = new BarDataSet(yVals1, "DataSet 1"); | ||
|
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| set1.setDrawIcons(false); | ||
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| ArrayList<IBarDataSet> dataSets = new ArrayList<IBarDataSet>(); | ||
| dataSets.add(set1); | ||
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| BarData data = new BarData(dataSets); | ||
| data.setValueTextSize(10f); | ||
| data.setValueTypeface(mTfLight); | ||
| data.setBarWidth(barWidth); | ||
| mChart.setData(data); | ||
| } | ||
| } | ||
|
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| protected RectF mOnValueSelectedRectF = new RectF(); | ||
| @SuppressLint("NewApi") | ||
| @Override | ||
| public void onValueSelected(Entry e, Highlight h) { | ||
|
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| if (e == null) | ||
| return; | ||
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| RectF bounds = mOnValueSelectedRectF; | ||
| mChart.getBarBounds((BarEntry) e, bounds); | ||
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| MPPointF position = mChart.getPosition(e, mChart.getData().getDataSetByIndex(h.getDataSetIndex()) | ||
| .getAxisDependency()); | ||
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| Log.i("bounds", bounds.toString()); | ||
| Log.i("position", position.toString()); | ||
|
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| MPPointF.recycleInstance(position); | ||
| } | ||
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| @Override | ||
| public void onNothingSelected() { | ||
| }; | ||
| } |
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