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Improve battery chart, fuel gauge now shows time since charged.

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Switch default stats to new time since charged.  Update to follow
API changes.  Improve the battery history chart.
This commit is contained in:
Dianne Hackborn
2010-06-14 17:18:42 -07:00
parent ea38e67853
commit 4f0e5350fc
2 changed files with 140 additions and 39 deletions
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166
src/com/android/settings/fuelgauge/BatteryHistoryChart.java
View File

@@ -23,20 +23,28 @@ import android.content.res.ColorStateList;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Typeface;
import android.os.BatteryStats;
import android.os.SystemClock;
import android.os.BatteryStats.BatteryHistoryRecord;
import android.os.BatteryStats.HistoryItem;
import android.text.TextPaint;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.View;
public class BatteryHistoryChart extends View {
private static final int SANS = 1;
private static final int SERIF = 2;
private static final int MONOSPACE = 3;
static final int SANS = 1;
static final int SERIF = 2;
static final int MONOSPACE = 3;
static final int BATTERY_WARN = 29;
static final int BATTERY_CRITICAL = 14;
final Paint mBatteryPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
final Paint mBatteryBackgroundPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
final Paint mBatteryGoodPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
final Paint mBatteryWarnPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
final Paint mBatteryCriticalPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
final TextPaint mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
int mFontSize;
@@ -55,10 +63,26 @@ public class BatteryHistoryChart extends View {
int mBatLow;
int mBatHigh;
final Path mBatLevelPath = new Path();
int[] mBatLevelX;
int[] mBatLevelY;
byte[] mBatLevelValue;
int mNumBatLevel;
public BatteryHistoryChart(Context context, AttributeSet attrs) {
super(context, attrs);
mBatteryPaint.setARGB(255, 255, 128, 128);
mBatteryBackgroundPaint.setARGB(255, 128, 128, 128);
mBatteryBackgroundPaint.setStyle(Paint.Style.FILL);
mBatteryGoodPaint.setARGB(128, 0, 255, 0);
int lineWidth = (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
2, getResources().getDisplayMetrics());
if (lineWidth <= 0) lineWidth = 1;
mBatteryGoodPaint.setStrokeWidth(lineWidth);
mBatteryWarnPaint.setARGB(128, 255, 255, 0);
mBatteryWarnPaint.setStrokeWidth(lineWidth);
mBatteryCriticalPaint.setARGB(192, 255, 0, 0);
mBatteryCriticalPaint.setStrokeWidth(lineWidth);
mTextPaint.density = getResources().getDisplayMetrics().density;
mTextPaint.setCompatibilityScaling(
@@ -199,30 +223,33 @@ public class BatteryHistoryChart extends View {
mStats = stats;
long uSecTime = mStats.computeBatteryRealtime(SystemClock.elapsedRealtime() * 1000,
BatteryStats.STATS_UNPLUGGED);
BatteryStats.STATS_SINCE_CHARGED);
mStatsPeriod = uSecTime;
String durationString = Utils.formatElapsedTime(getContext(), mStatsPeriod / 1000);
mDurationString = getContext().getString(R.string.battery_stats_on_battery,
durationString);
BatteryStats.BatteryHistoryRecord rec = stats.getHistory();
BatteryStats.HistoryItem rec = stats.getHistory();
if (rec != null) {
mHistStart = rec.time;
mBatLow = mBatHigh = rec.batteryLevel;
}
int pos = 0;
int lastUnplugged = 0;
int lastInteresting = 0;
byte lastLevel = -1;
mBatLow = 0;
mBatHigh = 100;
while (rec != null) {
pos++;
if ((rec.states&BatteryHistoryRecord.STATE_BATTERY_PLUGGED_FLAG) == 0) {
lastUnplugged = pos;
if (rec.cmd == HistoryItem.CMD_UPDATE && (rec.batteryLevel != lastLevel
|| pos == 1)) {
lastLevel = rec.batteryLevel;
lastInteresting = pos;
mHistEnd = rec.time;
}
rec = rec.next;
}
mNumHist = lastUnplugged;
mNumHist = lastInteresting;
if (mHistEnd <= mHistStart) mHistEnd = mHistStart+1;
}
@@ -238,6 +265,83 @@ public class BatteryHistoryChart extends View {
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
mBatLevelPath.reset();
mBatLevelX = new int[w+5];
mBatLevelY = new int[w+5];
mBatLevelValue = new byte[w+5];
mNumBatLevel = 0;
final long timeStart = mHistStart;
final long timeChange = mHistEnd-mHistStart;
final int batLow = mBatLow;
final int batChange = mBatHigh-mBatLow;
BatteryStats.HistoryItem rec = mStats.getHistory();
int x = 0, y = 0, lastX = -1, lastY = -1, lastBatX = -1, lastBatY = -1;
byte lastBatValue = 0;
int i = 0, num = 0;
boolean first = true;
final int N = mNumHist;
while (rec != null && i < N) {
if (rec.cmd == BatteryStats.HistoryItem.CMD_UPDATE) {
x = (int)(((rec.time-timeStart)*w)/timeChange);
y = h-1 - ((rec.batteryLevel-batLow)*(h-3))/batChange;
if (first) {
first = false;
mBatLevelPath.moveTo(x, y);
mBatLevelX[mNumBatLevel] = x;
mBatLevelY[mNumBatLevel] = y;
mBatLevelValue[mNumBatLevel] = lastBatValue = rec.batteryLevel;
mNumBatLevel++;
lastX = lastBatX = x;
lastY = lastBatY = y;
} else {
if (lastX != x) {
// We have moved by at least a pixel.
if (lastY == y) {
// Battery level is still the same; don't plot,
// but remember it.
lastBatX = x;
lastBatY = y;
} else {
if (lastBatX >= 0) {
// Level stayed the same up to here; put in line.
mBatLevelPath.lineTo(lastBatX, lastBatY);
mBatLevelX[mNumBatLevel] = lastBatX;
mBatLevelY[mNumBatLevel] = lastBatY;
mBatLevelValue[mNumBatLevel] = lastBatValue;
mNumBatLevel++;
num++;
}
mBatLevelPath.lineTo(x, y);
mBatLevelX[mNumBatLevel] = x;
mBatLevelY[mNumBatLevel] = y;
mBatLevelValue[mNumBatLevel] = lastBatValue = rec.batteryLevel;
mNumBatLevel++;
num++;
lastX = x;
lastY = y;
lastBatX = -1;
}
}
}
}
rec = rec.next;
i++;
}
if (num == 0 || lastBatX >= 0) {
mBatLevelPath.lineTo(w, y);
mBatLevelX[mNumBatLevel] = w;
mBatLevelY[mNumBatLevel] = y;
mBatLevelValue[mNumBatLevel] = lastBatValue;
mNumBatLevel++;
}
mBatLevelPath.lineTo(w, h);
mBatLevelPath.lineTo(0, h);
mBatLevelPath.close();
}
@Override
@@ -247,29 +351,23 @@ public class BatteryHistoryChart extends View {
final int width = getWidth();
final int height = getHeight();
final long timeStart = mHistStart;
final long timeChange = mHistEnd-mHistStart;
final int batLow = mBatLow;
final int batChange = mBatHigh-mBatLow;
BatteryStats.BatteryHistoryRecord rec = mStats.getHistory();
int lastX=-1, lastY=-1;
int pos = 0;
final int N = mNumHist;
while (rec != null && pos < N) {
int x = (int)(((rec.time-timeStart)*width)/timeChange);
int y = height-1 - ((rec.batteryLevel-batLow)*height)/batChange;
if (lastX >= 0) {
canvas.drawLine(lastX, lastY, x, y, mBatteryPaint);
}
lastX = x;
lastY = y;
rec = rec.next;
pos++;
}
canvas.drawPath(mBatLevelPath, mBatteryBackgroundPaint);
canvas.drawText(mDurationString, (width/2) - (mDurationStringWidth/2),
(height/2) - ((mTextDescent-mTextAscent)/2) - mTextAscent, mTextPaint);
int lastX = mBatLevelX[0];
int lastY = mBatLevelY[0];
for (int i=1; i<mNumBatLevel; i++) {
int x = mBatLevelX[i];
int y = mBatLevelY[i];
Paint paint;
byte value = mBatLevelValue[i];
if (value <= BATTERY_CRITICAL) paint = mBatteryCriticalPaint;
else if (value <= BATTERY_WARN) paint = mBatteryWarnPaint;
else paint = mBatteryGoodPaint;
canvas.drawLine(lastX, lastY, x, y, paint);
lastX = x;
lastY = y;
}
}
}