1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.systemui.qs; 18 19 import android.content.Context; 20 import android.content.res.Resources; 21 import android.graphics.Canvas; 22 import android.graphics.Paint; 23 import android.graphics.RectF; 24 import android.util.AttributeSet; 25 import android.view.View; 26 27 import com.android.systemui.R; 28 29 public class DataUsageGraph extends View { 30 31 private final int mTrackColor; 32 private final int mUsageColor; 33 private final int mOverlimitColor; 34 private final int mWarningColor; 35 private final int mMarkerWidth; 36 private final RectF mTmpRect = new RectF(); 37 private final Paint mTmpPaint = new Paint(); 38 39 private long mLimitLevel; 40 private long mWarningLevel; 41 private long mUsageLevel; 42 private long mMaxLevel; 43 44 public DataUsageGraph(Context context, AttributeSet attrs) { 45 super(context, attrs); 46 final Resources res = context.getResources(); 47 mTrackColor = context.getColor(R.color.data_usage_graph_track); 48 mUsageColor = context.getColor(R.color.system_accent_color); 49 mOverlimitColor = context.getColor(R.color.system_warning_color); 50 mWarningColor = context.getColor(R.color.data_usage_graph_warning); 51 mMarkerWidth = res.getDimensionPixelSize(R.dimen.data_usage_graph_marker_width); 52 } 53 54 public void setLevels(long limitLevel, long warningLevel, long usageLevel) { 55 mLimitLevel = Math.max(0, limitLevel); 56 mWarningLevel = Math.max(0, warningLevel); 57 mUsageLevel = Math.max(0, usageLevel); 58 mMaxLevel = Math.max(Math.max(Math.max(mLimitLevel, mWarningLevel), mUsageLevel), 1); 59 postInvalidate(); 60 } 61 62 @Override 63 protected void onDraw(Canvas canvas) { 64 super.onDraw(canvas); 65 66 final RectF r = mTmpRect; 67 final Paint p = mTmpPaint; 68 final int w = getWidth(); 69 final int h = getHeight(); 70 71 final boolean overLimit = mLimitLevel > 0 && mUsageLevel > mLimitLevel; 72 float usageRight = w * (mUsageLevel / (float) mMaxLevel); 73 if (overLimit) { 74 // compute the gap 75 usageRight = w * (mLimitLevel / (float) mMaxLevel) - (mMarkerWidth / 2); 76 usageRight = Math.min(Math.max(usageRight, mMarkerWidth), w - mMarkerWidth * 2); 77 78 // draw overlimit 79 r.set(usageRight + mMarkerWidth, 0, w, h); 80 p.setColor(mOverlimitColor); 81 canvas.drawRect(r, p); 82 } else { 83 // draw track 84 r.set(0, 0, w, h); 85 p.setColor(mTrackColor); 86 canvas.drawRect(r, p); 87 } 88 89 // draw usage 90 r.set(0, 0, usageRight, h); 91 p.setColor(mUsageColor); 92 canvas.drawRect(r, p); 93 94 // draw warning marker 95 float warningLeft = w * (mWarningLevel / (float) mMaxLevel) - mMarkerWidth / 2; 96 warningLeft = Math.min(Math.max(warningLeft, 0), w - mMarkerWidth); 97 r.set(warningLeft, 0, warningLeft + mMarkerWidth, h); 98 p.setColor(mWarningColor); 99 canvas.drawRect(r, p); 100 } 101 } 102
