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/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.settings.fuelgauge;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.ColorFilter;
import android.graphics.PixelFormat;
import android.graphics.drawable.Drawable;
import android.preference.Preference;
import android.view.View;
import android.widget.ImageView;
import com.android.settings.R;
import com.android.settings.fuelgauge.PowerUsageSummary.BatterySipper;
/**
* Custom preference for displaying power consumption as a bar and an icon on the left for the
* subsystem/app type.
*
*/
public class PowerGaugePreference extends Preference {
private Drawable mIcon;
private GaugeDrawable mGauge;
private double mValue;
private BatterySipper mInfo;
public PowerGaugePreference(Context context, Drawable icon, BatterySipper info) {
super(context);
setLayoutResource(R.layout.preference_powergauge);
mIcon = icon;
mGauge = new GaugeDrawable();
mGauge.bar = context.getResources().getDrawable(R.drawable.app_gauge);
mInfo = info;
}
/**
* Sets the width of the gauge in percentage (0 - 100)
* @param percent
*/
void setGaugeValue(double percent) {
mValue = percent;
mGauge.percent = mValue;
}
BatterySipper getInfo() {
return mInfo;
}
@Override
protected void onBindView(View view) {
super.onBindView(view);
ImageView appIcon = (ImageView) view.findViewById(R.id.appIcon);
if (mIcon == null) {
mIcon = getContext().getResources().getDrawable(android.R.drawable.sym_def_app_icon);
}
appIcon.setImageDrawable(mIcon);
ImageView appGauge = (ImageView) view.findViewById(R.id.appGauge);
appGauge.setImageDrawable(mGauge);
}
static class GaugeDrawable extends Drawable {
Drawable bar;
double percent;
int lastWidth = -1;
@Override
public void draw(Canvas canvas) {
if (lastWidth == -1) {
lastWidth = getBarWidth();
bar.setBounds(0, 0, lastWidth, bar.getIntrinsicHeight());
}
bar.draw(canvas);
}
@Override
public int getOpacity() {
return PixelFormat.TRANSLUCENT;
}
@Override
public void setAlpha(int alpha) {
// Ignore
}
@Override
public void setColorFilter(ColorFilter cf) {
// Ignore
}
private int getBarWidth() {
int width = (int) ((this.getBounds().width() * percent) / 100);
int intrinsicWidth = bar.getIntrinsicWidth();
return Math.max(width, intrinsicWidth);
}
@Override
public int getIntrinsicHeight() {
return bar.getIntrinsicHeight();
}
}
}
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