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/*
* Copyright (C) 2012 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.keyguard;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.ColorFilter;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.PixelFormat;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.drawable.Drawable;
class KeyguardCircleFramedDrawable extends Drawable {
private final Bitmap mBitmap;
private final int mSize;
private final Paint mPaint;
private final float mShadowRadius;
private final float mStrokeWidth;
private final int mFrameColor;
private final int mHighlightColor;
private final int mFrameShadowColor;
private float mScale;
private Path mFramePath;
private Rect mSrcRect;
private RectF mDstRect;
private RectF mFrameRect;
private boolean mPressed;
public KeyguardCircleFramedDrawable(Bitmap bitmap, int size,
int frameColor, float strokeWidth,
int frameShadowColor, float shadowRadius,
int highlightColor) {
super();
mSize = size;
mShadowRadius = shadowRadius;
mFrameColor = frameColor;
mFrameShadowColor = frameShadowColor;
mStrokeWidth = strokeWidth;
mHighlightColor = highlightColor;
mBitmap = Bitmap.createBitmap(mSize, mSize, Bitmap.Config.ARGB_8888);
final Canvas canvas = new Canvas(mBitmap);
final int width = bitmap.getWidth();
final int height = bitmap.getHeight();
final int square = Math.min(width, height);
final Rect cropRect = new Rect((width - square) / 2, (height - square) / 2, square, square);
final RectF circleRect = new RectF(0f, 0f, mSize, mSize);
circleRect.inset(mStrokeWidth / 2f, mStrokeWidth / 2f);
circleRect.inset(mShadowRadius, mShadowRadius);
final Path fillPath = new Path();
fillPath.addArc(circleRect, 0f, 360f);
canvas.drawColor(0, PorterDuff.Mode.CLEAR);
// opaque circle matte
mPaint = new Paint();
mPaint.setAntiAlias(true);
mPaint.setColor(Color.BLACK);
mPaint.setStyle(Paint.Style.FILL);
canvas.drawPath(fillPath, mPaint);
// mask in the icon where the bitmap is opaque
mPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_ATOP));
canvas.drawBitmap(bitmap, cropRect, circleRect, mPaint);
// prepare paint for frame drawing
mPaint.setXfermode(null);
mScale = 1f;
mSrcRect = new Rect(0, 0, mSize, mSize);
mDstRect = new RectF(0, 0, mSize, mSize);
mFrameRect = new RectF(mDstRect);
mFramePath = new Path();
}
public void reset() {
mScale = 1f;
mPressed = false;
}
@Override
public void draw(Canvas canvas) {
// clear background
final float outside = Math.min(canvas.getWidth(), canvas.getHeight());
final float inside = mScale * outside;
final float pad = (outside - inside) / 2f;
mDstRect.set(pad, pad, outside - pad, outside - pad);
canvas.drawBitmap(mBitmap, mSrcRect, mDstRect, null);
mFrameRect.set(mDstRect);
mFrameRect.inset(mStrokeWidth / 2f, mStrokeWidth / 2f);
mFrameRect.inset(mShadowRadius, mShadowRadius);
mFramePath.reset();
mFramePath.addArc(mFrameRect, 0f, 360f);
// white frame
if (mPressed) {
mPaint.setStyle(Paint.Style.FILL);
mPaint.setColor(Color.argb((int) (0.33f * 255),
Color.red(mHighlightColor),
Color.green(mHighlightColor),
Color.blue(mHighlightColor)));
canvas.drawPath(mFramePath, mPaint);
}
mPaint.setStrokeWidth(mStrokeWidth);
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setColor(mPressed ? mHighlightColor : mFrameColor);
mPaint.setShadowLayer(mShadowRadius, 0f, 0f, mFrameShadowColor);
canvas.drawPath(mFramePath, mPaint);
}
public void setScale(float scale) {
mScale = scale;
}
public float getScale() {
return mScale;
}
public void setPressed(boolean pressed) {
mPressed = pressed;
}
@Override
public int getOpacity() {
return PixelFormat.TRANSLUCENT;
}
@Override
public void setAlpha(int alpha) {
}
@Override
public void setColorFilter(ColorFilter cf) {
}
public boolean verifyParams(float iconSize, int frameColor, float stroke,
int frameShadowColor, float shadowRadius, int highlightColor) {
return mSize == iconSize
&& mFrameColor == frameColor
&& mStrokeWidth == stroke
&& mFrameShadowColor == frameShadowColor
&& mShadowRadius == shadowRadius
&& mHighlightColor == highlightColor;
}
}
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