最美应用 钢琴律动效果

/* * Copyright (C) 2014 Vincent Mi * * 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.hrm.niceapp.widget; import android.content.Context; import android.content.res.ColorStateList; import android.content.res.Resources; import android.content.res.TypedArray; import android.graphics.Bitmap; import android.graphics.Shader; import android.graphics.drawable.Drawable; import android.graphics.drawable.LayerDrawable; import android.net.Uri; import android.util.AttributeSet; import android.util.Log; import android.widget.ImageView; import com.hrm.niceapp.R; @SuppressWarnings("UnusedDeclaration") public class RoundedImageView extends ImageView { // Constants for tile mode attributes private static final int TILE_MODE_UNDEFINED = -2; private static final int TILE_MODE_CLAMP = 0; private static final int TILE_MODE_REPEAT = 1; private static final int TILE_MODE_MIRROR = 2; public static final String TAG = "RoundedImageView"; public static final float DEFAULT_RADIUS = 0f; public static final float DEFAULT_BORDER_WIDTH = 0f; public static final Shader.TileMode DEFAULT_TILE_MODE = Shader.TileMode.CLAMP; private static final ScaleType[] SCALE_TYPES = { ScaleType.MATRIX, ScaleType.FIT_XY, ScaleType.FIT_START, ScaleType.FIT_CENTER, ScaleType.FIT_END, ScaleType.CENTER, ScaleType.CENTER_CROP, ScaleType.CENTER_INSIDE }; private float cornerRadius = DEFAULT_RADIUS; private float borderWidth = DEFAULT_BORDER_WIDTH; private ColorStateList borderColor = ColorStateList.valueOf(RoundedDrawable.DEFAULT_BORDER_COLOR); private boolean isOval = false; private boolean mutateBackground = false; private Shader.TileMode tileModeX = DEFAULT_TILE_MODE; private Shader.TileMode tileModeY = DEFAULT_TILE_MODE; private int mResource; private Drawable mDrawable; private Drawable mBackgroundDrawable; private ScaleType mScaleType; public RoundedImageView(Context context) { super(context); } public RoundedImageView(Context context, AttributeSet attrs) { this(context, attrs, 0); } public RoundedImageView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.RoundedImageView, defStyle, 0); int index = a.getInt(R.styleable.RoundedImageView_android_scaleType, -1); if (index >= 0) { setScaleType(SCALE_TYPES[index]); } else { // default scaletype to FIT_CENTER setScaleType(ScaleType.FIT_CENTER); } cornerRadius = a.getDimensionPixelSize(R.styleable.RoundedImageView_riv_corner_radius, -1); borderWidth = a.getDimensionPixelSize(R.styleable.RoundedImageView_riv_border_width, -1); // don't allow negative values for radius and border if (cornerRadius < 0) { cornerRadius = DEFAULT_RADIUS; } if (borderWidth < 0) { borderWidth = DEFAULT_BORDER_WIDTH; } borderColor = a.getColorStateList(R.styleable.RoundedImageView_riv_border_color); if (borderColor == null) { borderColor = ColorStateList.valueOf(RoundedDrawable.DEFAULT_BORDER_COLOR); } mutateBackground = a.getBoolean(R.styleable.RoundedImageView_riv_mutate_background, false); isOval = a.getBoolean(R.styleable.RoundedImageView_riv_oval, false); final int tileMode = a.getInt(R.styleable.RoundedImageView_riv_tile_mode, TILE_MODE_UNDEFINED); if (tileMode != TILE_MODE_UNDEFINED) { setTileModeX(parseTileMode(tileMode)); setTileModeY(parseTileMode(tileMode)); } final int tileModeX = a.getInt(R.styleable.RoundedImageView_riv_tile_mode_x, TILE_MODE_UNDEFINED); if (tileModeX != TILE_MODE_UNDEFINED) { setTileModeX(parseTileMode(tileModeX)); } final int tileModeY = a.getInt(R.styleable.RoundedImageView_riv_tile_mode_y, TILE_MODE_UNDEFINED); if (tileModeY != TILE_MODE_UNDEFINED) { setTileModeY(parseTileMode(tileModeY)); } updateDrawableAttrs(); updateBackgroundDrawableAttrs(true); a.recycle(); } private static Shader.TileMode parseTileMode(int tileMode) { switch (tileMode) { case TILE_MODE_CLAMP: return Shader.TileMode.CLAMP; case TILE_MODE_REPEAT: return Shader.TileMode.REPEAT; case TILE_MODE_MIRROR: return Shader.TileMode.MIRROR; default: return null; } } @Override protected void drawableStateChanged() { super.drawableStateChanged(); invalidate(); } /** * Return the current scale type in use by this ImageView. * * @attr ref android.R.styleable#ImageView_scaleType * @see android.widget.ImageView.ScaleType */ @Override public ScaleType getScaleType() { return mScaleType; } /** * Controls how the image should be resized or moved to match the size * of this ImageView. * * @param scaleType The desired scaling mode. * @attr ref android.R.styleable#ImageView_scaleType */ @Override public void setScaleType(ScaleType scaleType) { assert scaleType != null; if (mScaleType != scaleType) { mScaleType = scaleType; switch (scaleType) { case CENTER: case CENTER_CROP: case CENTER_INSIDE: case FIT_CENTER: case FIT_START: case FIT_END: case FIT_XY: super.setScaleType(ScaleType.FIT_XY); break; default: super.setScaleType(scaleType); break; } updateDrawableAttrs(); updateBackgroundDrawableAttrs(false); invalidate(); } } @Override public void setImageDrawable(Drawable drawable) { mResource = 0; mDrawable = RoundedDrawable.fromDrawable(drawable); updateDrawableAttrs(); super.setImageDrawable(mDrawable); } @Override public void setImageBitmap(Bitmap bm) { mResource = 0; mDrawable = RoundedDrawable.fromBitmap(bm); updateDrawableAttrs(); super.setImageDrawable(mDrawable); } @Override public void setImageResource(int resId) { if (mResource != resId) { mResource = resId; mDrawable = resolveResource(); updateDrawableAttrs(); super.setImageDrawable(mDrawable); } } @Override public void setImageURI(Uri uri) { super.setImageURI(uri); setImageDrawable(getDrawable()); } private Drawable resolveResource() { Resources rsrc = getResources(); if (rsrc == null) { return null; } Drawable d = null; if (mResource != 0) { try { d = rsrc.getDrawable(mResource); } catch (Exception e) { Log.w(TAG, "Unable to find resource: " + mResource, e); // Don't try again. mResource = 0; } } return Ro