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330
headerview/src/main/java/rebus/header/view/BezelImageView.java
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/* | ||
* Copyright 2014 Google Inc. All rights reserved. | ||
* | ||
* 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. | ||
* | ||
* The original is from Google you can find here: | ||
* https://github.com/google/iosched/blob/master/android/src/main/java/com/google/samples/apps/iosched/ui/widget/BezelImageView.java | ||
* | ||
* Modified and improved with additional functionality by Mike Penz | ||
*/ | ||
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package rebus.header.view; | ||
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import android.annotation.TargetApi; | ||
import android.content.Context; | ||
import android.content.res.TypedArray; | ||
import android.graphics.Bitmap; | ||
import android.graphics.Canvas; | ||
import android.graphics.Color; | ||
import android.graphics.ColorFilter; | ||
import android.graphics.ColorMatrix; | ||
import android.graphics.ColorMatrixColorFilter; | ||
import android.graphics.Outline; | ||
import android.graphics.Paint; | ||
import android.graphics.PorterDuff; | ||
import android.graphics.PorterDuffColorFilter; | ||
import android.graphics.PorterDuffXfermode; | ||
import android.graphics.Rect; | ||
import android.graphics.RectF; | ||
import android.graphics.drawable.Drawable; | ||
import android.os.Build; | ||
import android.util.AttributeSet; | ||
import android.view.MotionEvent; | ||
import android.view.View; | ||
import android.view.ViewOutlineProvider; | ||
import android.widget.ImageView; | ||
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/** | ||
* Created by raphaelbussa on 26/03/16. | ||
*/ | ||
public class BezelImageView extends ImageView { | ||
private Paint mBlackPaint; | ||
private Paint mMaskedPaint; | ||
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private Rect mBounds; | ||
private RectF mBoundsF; | ||
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private Drawable mMaskDrawable; | ||
private boolean mDrawCircularShadow = true; | ||
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private ColorMatrixColorFilter mDesaturateColorFilter; | ||
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private int mSelectorAlpha = 150; | ||
private int mSelectorColor; | ||
private ColorFilter mSelectorFilter; | ||
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private boolean mCacheValid = false; | ||
private Bitmap mCacheBitmap; | ||
private int mCachedWidth; | ||
private int mCachedHeight; | ||
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private boolean isPressed = false; | ||
private boolean isSelected; | ||
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public BezelImageView(Context context) { | ||
this(context, null); | ||
} | ||
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public BezelImageView(Context context, AttributeSet attrs) { | ||
this(context, attrs, 0); | ||
} | ||
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public BezelImageView(Context context, AttributeSet attrs, int defStyle) { | ||
super(context, attrs, defStyle); | ||
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// Attribute initialization | ||
final TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.BezelImageView, defStyle, R.style.BezelImageView); | ||
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mMaskDrawable = a.getDrawable(R.styleable.BezelImageView_biv_maskDrawable); | ||
if (mMaskDrawable != null) { | ||
mMaskDrawable.setCallback(this); | ||
} | ||
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mDrawCircularShadow = a.getBoolean(R.styleable.BezelImageView_biv_drawCircularShadow, true); | ||
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mSelectorColor = a.getColor(R.styleable.BezelImageView_biv_selectorOnPress, 0); | ||
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a.recycle(); | ||
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// Other initialization | ||
mBlackPaint = new Paint(); | ||
mBlackPaint.setColor(0xff000000); | ||
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mMaskedPaint = new Paint(); | ||
mMaskedPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN)); | ||
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// Always want a cache allocated. | ||
mCacheBitmap = Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888); | ||
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// Create a desaturate color filter for pressed state. | ||
ColorMatrix cm = new ColorMatrix(); | ||
cm.setSaturation(0); | ||
mDesaturateColorFilter = new ColorMatrixColorFilter(cm); | ||
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//create a selectorFilter if we already have a color | ||
if (mSelectorColor != 0) { | ||
this.mSelectorFilter = new PorterDuffColorFilter(Color.argb(mSelectorAlpha, Color.red(mSelectorColor), Color.green(mSelectorColor), Color.blue(mSelectorColor)), PorterDuff.Mode.SRC_ATOP); | ||
} | ||
} | ||
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@Override | ||
protected void onSizeChanged(int w, int h, int old_w, int old_h) { | ||
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { | ||
if (mDrawCircularShadow) { | ||
setOutlineProvider(new CustomOutline(w, h)); | ||
} | ||
} | ||
} | ||
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@TargetApi(21) | ||
private class CustomOutline extends ViewOutlineProvider { | ||
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int width; | ||
int height; | ||
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CustomOutline(int width, int height) { | ||
this.width = width; | ||
this.height = height; | ||
} | ||
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@Override | ||
public void getOutline(View view, Outline outline) { | ||
outline.setOval(0, 0, width, height); | ||
} | ||
} | ||
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@Override | ||
protected boolean setFrame(int l, int t, int r, int b) { | ||
final boolean changed = super.setFrame(l, t, r, b); | ||
mBounds = new Rect(0, 0, r - l, b - t); | ||
mBoundsF = new RectF(mBounds); | ||
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if (mMaskDrawable != null) { | ||
mMaskDrawable.setBounds(mBounds); | ||
} | ||
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if (changed) { | ||
mCacheValid = false; | ||
} | ||
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return changed; | ||
} | ||
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@Override | ||
protected void onDraw(Canvas canvas) { | ||
if (mBounds == null) { | ||
return; | ||
} | ||
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int width = mBounds.width(); | ||
int height = mBounds.height(); | ||
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if (width == 0 || height == 0) { | ||
return; | ||
} | ||
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if (!mCacheValid || width != mCachedWidth || height != mCachedHeight || isSelected != isPressed) { | ||
// Need to redraw the cache | ||
if (width == mCachedWidth && height == mCachedHeight) { | ||
// Have a correct-sized bitmap cache already allocated. Just erase it. | ||
mCacheBitmap.eraseColor(0); | ||
} else { | ||
// Allocate a new bitmap with the correct dimensions. | ||
mCacheBitmap.recycle(); | ||
//noinspection AndroidLintDrawAllocation | ||
mCacheBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); | ||
mCachedWidth = width; | ||
mCachedHeight = height; | ||
} | ||
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Canvas cacheCanvas = new Canvas(mCacheBitmap); | ||
if (mMaskDrawable != null) { | ||
int sc = cacheCanvas.save(); | ||
mMaskDrawable.draw(cacheCanvas); | ||
if (isSelected) { | ||
if (mSelectorFilter != null) { | ||
mMaskedPaint.setColorFilter(mSelectorFilter); | ||
} else { | ||
mMaskedPaint.setColorFilter(mDesaturateColorFilter); | ||
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} | ||
} else { | ||
mMaskedPaint.setColorFilter(null); | ||
} | ||
cacheCanvas.saveLayer(mBoundsF, mMaskedPaint, | ||
Canvas.HAS_ALPHA_LAYER_SAVE_FLAG | Canvas.FULL_COLOR_LAYER_SAVE_FLAG); | ||
super.onDraw(cacheCanvas); | ||
cacheCanvas.restoreToCount(sc); | ||
} else if (isSelected) { | ||
int sc = cacheCanvas.save(); | ||
cacheCanvas.drawRect(0, 0, mCachedWidth, mCachedHeight, mBlackPaint); | ||
if (mSelectorFilter != null) { | ||
mMaskedPaint.setColorFilter(mSelectorFilter); | ||
} else { | ||
mMaskedPaint.setColorFilter(mDesaturateColorFilter); | ||
} | ||
cacheCanvas.saveLayer(mBoundsF, mMaskedPaint, | ||
Canvas.HAS_ALPHA_LAYER_SAVE_FLAG | Canvas.FULL_COLOR_LAYER_SAVE_FLAG); | ||
super.onDraw(cacheCanvas); | ||
cacheCanvas.restoreToCount(sc); | ||
} else { | ||
super.onDraw(cacheCanvas); | ||
} | ||
} | ||
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// Draw from cache | ||
canvas.drawBitmap(mCacheBitmap, mBounds.left, mBounds.top, null); | ||
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//remember the previous press state | ||
isPressed = isPressed(); | ||
} | ||
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@Override | ||
public boolean dispatchTouchEvent(MotionEvent event) { | ||
// Check for clickable state and do nothing if disabled | ||
if (!this.isClickable()) { | ||
this.isSelected = false; | ||
return super.onTouchEvent(event); | ||
} | ||
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// Set selected state based on Motion Event | ||
switch (event.getAction()) { | ||
case MotionEvent.ACTION_DOWN: | ||
this.isSelected = true; | ||
break; | ||
case MotionEvent.ACTION_UP: | ||
case MotionEvent.ACTION_SCROLL: | ||
case MotionEvent.ACTION_OUTSIDE: | ||
case MotionEvent.ACTION_CANCEL: | ||
this.isSelected = false; | ||
break; | ||
} | ||
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// Redraw image and return super type | ||
this.invalidate(); | ||
return super.dispatchTouchEvent(event); | ||
} | ||
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@Override | ||
protected void drawableStateChanged() { | ||
super.drawableStateChanged(); | ||
if (mMaskDrawable != null && mMaskDrawable.isStateful()) { | ||
mMaskDrawable.setState(getDrawableState()); | ||
} | ||
} | ||
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@Override | ||
public void invalidateDrawable(Drawable who) { | ||
if (who == mMaskDrawable) { | ||
invalidate(); | ||
} else { | ||
super.invalidateDrawable(who); | ||
} | ||
} | ||
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@Override | ||
protected boolean verifyDrawable(Drawable who) { | ||
return who == mMaskDrawable || super.verifyDrawable(who); | ||
} | ||
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/** | ||
* Sets the color of the selector to be draw over the | ||
* CircularImageView. Be sure to provide some opacity. | ||
* | ||
* @param selectorColor The color (including alpha) to set for the selector overlay. | ||
*/ | ||
public void setSelectorColor(int selectorColor) { | ||
this.mSelectorColor = selectorColor; | ||
this.mSelectorFilter = new PorterDuffColorFilter(Color.argb(mSelectorAlpha, Color.red(mSelectorColor), Color.green(mSelectorColor), Color.blue(mSelectorColor)), PorterDuff.Mode.SRC_ATOP); | ||
this.invalidate(); | ||
} | ||
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@Override | ||
public void setImageDrawable(Drawable drawable) { | ||
super.setImageDrawable(drawable); | ||
} | ||
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@Override | ||
public void setImageResource(int resId) { | ||
super.setImageResource(resId); | ||
} | ||
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@Override | ||
public void setImageBitmap(Bitmap bm) { | ||
super.setImageBitmap(bm); | ||
} | ||
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private ColorMatrixColorFilter mTempDesaturateColorFilter; | ||
private ColorFilter mTempSelectorFilter; | ||
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public void disableTouchFeedback(boolean disable) { | ||
if (disable) { | ||
mTempDesaturateColorFilter = this.mDesaturateColorFilter; | ||
mTempSelectorFilter = this.mSelectorFilter; | ||
this.mSelectorFilter = null; | ||
this.mDesaturateColorFilter = null; | ||
} else { | ||
if (mTempDesaturateColorFilter != null) { | ||
this.mDesaturateColorFilter = mTempDesaturateColorFilter; | ||
} | ||
if (mTempSelectorFilter != null) { | ||
this.mSelectorFilter = mTempSelectorFilter; | ||
} | ||
} | ||
} | ||
} |
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