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/*
* Copyright (C) 2011 The Android Open Source Project
* Copyright (C) 2013 Android Open Kang 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.dialer.widget;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.LinearGradient;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Rect;
import android.graphics.Shader;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.widget.LinearLayout;
import com.android.dialer.R;
public class LinearColorBar extends LinearLayout {
private float mFirstRatio;
private float mSecondRatio;
private float mThirdRatio;
private float mFourthRatio;
private int mBackgroundColor;
private int mBlueColor;
private int mGreenColor;
private int mRedColor;
private int mOrangeColor;
final Rect mRect = new Rect();
final Paint mPaint = new Paint();
int mLastInterestingLeft, mLastInterestingRight;
int mLineWidth;
final Path mColorPath = new Path();
final Path mEdgePath = new Path();
final Paint mColorGradientPaint = new Paint();
final Paint mEdgeGradientPaint = new Paint();
public LinearColorBar(Context context, AttributeSet attrs) {
super(context, attrs);
setWillNotDraw(false);
TypedArray a = context.obtainStyledAttributes(
attrs, R.styleable.LinearColorBar, 0, 0);
int n = a.getIndexCount();
for (int i = 0; i < n; i++) {
int attr = a.getIndex(i);
switch (attr) {
case R.styleable.LinearColorBar_backgroundColor:
mBackgroundColor = a.getColor(attr, 0);
break;
case R.styleable.LinearColorBar_redColor:
mRedColor = a.getColor(attr, 0);
break;
case R.styleable.LinearColorBar_greenColor:
mGreenColor = a.getColor(attr, 0);
break;
case R.styleable.LinearColorBar_blueColor:
mBlueColor = a.getColor(attr, 0);
break;
case R.styleable.LinearColorBar_orangeColor:
mOrangeColor = a.getColor(attr, 0);
break;
}
}
a.recycle();
mPaint.setStyle(Paint.Style.FILL);
mColorGradientPaint.setStyle(Paint.Style.FILL);
mColorGradientPaint.setAntiAlias(true);
mEdgeGradientPaint.setStyle(Paint.Style.STROKE);
mLineWidth = getResources().getDisplayMetrics().densityDpi >= DisplayMetrics.DENSITY_HIGH
? 2 : 1;
mEdgeGradientPaint.setStrokeWidth(mLineWidth);
mEdgeGradientPaint.setAntiAlias(true);
}
public void setRatios(float blue, float green, float red, float orange) {
mFirstRatio = blue;
mSecondRatio = green;
mThirdRatio = red;
mFourthRatio = orange;
invalidate();
}
private void updateIndicator() {
int off = Math.max(0, getPaddingTop() - getPaddingBottom());
mRect.top = off;
mRect.bottom = getHeight();
mColorGradientPaint.setShader(new LinearGradient(
0, 0, 0, off - 2, mBackgroundColor & 0xffffff,
mBackgroundColor, Shader.TileMode.CLAMP));
mEdgeGradientPaint.setShader(new LinearGradient(
0, 0, 0, off / 2, 0x00a0a0a0, 0xffa0a0a0, Shader.TileMode.CLAMP));
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
updateIndicator();
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
int width = getWidth();
int left = 0;
int right = left + (int) (width * mFirstRatio);
int right2 = right + (int) (width * mSecondRatio);
int right3 = right2 + (int) (width * mThirdRatio);
int right4 = right3 + (int) (width * mFourthRatio);
int indicatorLeft = right4;
int indicatorRight = width;
if (mLastInterestingLeft != indicatorLeft || mLastInterestingRight != indicatorRight) {
mColorPath.reset();
mEdgePath.reset();
if (indicatorLeft < indicatorRight) {
final int midTopY = mRect.top;
final int midBottomY = 0;
final int xoff = 2;
mColorPath.moveTo(indicatorLeft, mRect.top);
mColorPath.cubicTo(indicatorLeft, midBottomY, -xoff, midTopY, -xoff, 0);
mColorPath.lineTo(width + xoff - 1, 0);
mColorPath.cubicTo(width + xoff - 1, midTopY,
indicatorRight, midBottomY, indicatorRight, mRect.top);
mColorPath.close();
final float lineOffset = mLineWidth + .5f;
mEdgePath.moveTo(-xoff + lineOffset, 0);
mEdgePath.cubicTo(-xoff + lineOffset, midTopY,
indicatorLeft + lineOffset, midBottomY, indicatorLeft + lineOffset, mRect.top);
mEdgePath.moveTo(width + xoff - 1 - lineOffset, 0);
mEdgePath.cubicTo(width + xoff - 1 - lineOffset, midTopY,
indicatorRight - lineOffset, midBottomY, indicatorRight - lineOffset, mRect.top);
}
mLastInterestingLeft = indicatorLeft;
mLastInterestingRight = indicatorRight;
}
if (!mEdgePath.isEmpty()) {
canvas.drawPath(mEdgePath, mEdgeGradientPaint);
canvas.drawPath(mColorPath, mColorGradientPaint);
}
if (left < right) {
mRect.left = left;
mRect.right = right;
mPaint.setColor(mBlueColor);
canvas.drawRect(mRect, mPaint);
width -= (right - left);
left = right;
}
right = right2;
if (left < right) {
mRect.left = left;
mRect.right = right;
mPaint.setColor(mGreenColor);
canvas.drawRect(mRect, mPaint);
width -= (right - left);
left = right;
}
right = right3;
if (left < right) {
mRect.left = left;
mRect.right = right;
mPaint.setColor(mRedColor);
canvas.drawRect(mRect, mPaint);
width -= (right - left);
left = right;
}
right = right4;
if (left < right) {
mRect.left = left;
mRect.right = right;
mPaint.setColor(mOrangeColor);
canvas.drawRect(mRect, mPaint);
width -= (right - left);
left = right;
}
right = left + width;
if (left < right) {
mRect.left = left;
mRect.right = right;
mPaint.setColor(mBackgroundColor);
canvas.drawRect(mRect, mPaint);
}
}
}
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