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Data usage chart fixes.

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Always draw first data point at 0. Each point should include full
value of current bucket, instead of lagging behind by one.

Bug: 5404917, 5404861, 5178305
Change-Id: I5fa63bc84cc1f9c0403fb03effd5affd2f01ad4c
This commit is contained in:
Jeff Sharkey
2011-10-14 14:36:58 -07:00
parent 68da83649e
commit f9eca2e0e0
1 changed files with 32 additions and 23 deletions
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55
src/com/android/settings/widget/ChartNetworkSeriesView.java
View File

@@ -181,10 +181,13 @@ public class ChartNetworkSeriesView extends View {
final int height = getHeight();
boolean started = false;
float firstX = 0;
float lastX = 0;
float lastY = 0;
long lastTime = Long.MIN_VALUE;
float lastY = height;
long lastTime = mHoriz.convertToValue(lastX);
// move into starting position
mPathStroke.moveTo(lastX, lastY);
mPathFill.moveTo(lastX, lastY);
// TODO: count fractional data from first bucket crossing start;
// currently it only accepts first full bucket.
@@ -198,36 +201,42 @@ public class ChartNetworkSeriesView extends View {
for (int i = start; i <= end; i++) {
entry = mStats.getValues(i, entry);
lastTime = entry.bucketStart + entry.bucketDuration;
final float x = mHoriz.convertToPoint(lastTime);
final float y = mVert.convertToPoint(totalData);
final long startTime = entry.bucketStart;
final long endTime = startTime + entry.bucketDuration;
final float startX = mHoriz.convertToPoint(startTime);
final float endX = mHoriz.convertToPoint(endTime);
// skip until we find first stats on screen
if (i > 0 && !started && x > 0) {
mPathStroke.moveTo(lastX, lastY);
mPathFill.moveTo(lastX, lastY);
started = true;
firstX = x;
if (endX < 0) continue;
// increment by current bucket total
totalData += entry.rxBytes + entry.txBytes;
final float startY = lastY;
final float endY = mVert.convertToPoint(totalData);
if (lastTime != startTime) {
// gap in buckets; line to start of current bucket
mPathStroke.lineTo(startX, startY);
mPathFill.lineTo(startX, startY);
}
if (started) {
mPathStroke.lineTo(x, y);
mPathFill.lineTo(x, y);
totalData += entry.rxBytes + entry.txBytes;
}
// always draw to end of current bucket
mPathStroke.lineTo(endX, endY);
mPathFill.lineTo(endX, endY);
lastX = x;
lastY = y;
lastX = endX;
lastY = endY;
lastTime = endTime;
}
// when data falls short, extend to requested end time
if (lastTime < mEndTime) {
lastX = mHoriz.convertToPoint(mEndTime);
if (started) {
mPathStroke.lineTo(lastX, lastY);
mPathFill.lineTo(lastX, lastY);
}
mPathStroke.lineTo(lastX, lastY);
mPathFill.lineTo(lastX, lastY);
}
if (LOGD) {
@@ -239,7 +248,7 @@ public class ChartNetworkSeriesView extends View {
// drop to bottom of graph from current location
mPathFill.lineTo(lastX, height);
mPathFill.lineTo(firstX, height);
mPathFill.lineTo(0, height);
mMax = totalData;