| /* |
| * Copyright (C) 2015 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 android.graphics.drawable; |
| |
| import android.annotation.ColorInt; |
| import android.annotation.DrawableRes; |
| import android.annotation.IdRes; |
| import android.annotation.IntDef; |
| import android.annotation.NonNull; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.PackageManager; |
| import android.content.res.ColorStateList; |
| import android.content.res.Resources; |
| import android.graphics.Bitmap; |
| import android.graphics.BitmapFactory; |
| import android.graphics.PorterDuff; |
| import android.net.Uri; |
| import android.os.AsyncTask; |
| import android.os.Handler; |
| import android.os.Message; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.text.TextUtils; |
| import android.util.Log; |
| |
| import java.io.DataInputStream; |
| import java.io.DataOutputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.util.Arrays; |
| import java.util.Objects; |
| |
| /** |
| * An umbrella container for several serializable graphics representations, including Bitmaps, |
| * compressed bitmap images (e.g. JPG or PNG), and drawable resources (including vectors). |
| * |
| * <a href="https://developer.android.com/training/displaying-bitmaps/index.html">Much ink</a> |
| * has been spilled on the best way to load images, and many clients may have different needs when |
| * it comes to threading and fetching. This class is therefore focused on encapsulation rather than |
| * behavior. |
| */ |
| |
| public final class Icon implements Parcelable { |
| private static final String TAG = "Icon"; |
| |
| /** |
| * An icon that was created using {@link Icon#createWithBitmap(Bitmap)}. |
| * @see #getType |
| */ |
| public static final int TYPE_BITMAP = 1; |
| /** |
| * An icon that was created using {@link Icon#createWithResource}. |
| * @see #getType |
| */ |
| public static final int TYPE_RESOURCE = 2; |
| /** |
| * An icon that was created using {@link Icon#createWithData(byte[], int, int)}. |
| * @see #getType |
| */ |
| public static final int TYPE_DATA = 3; |
| /** |
| * An icon that was created using {@link Icon#createWithContentUri} |
| * or {@link Icon#createWithFilePath(String)}. |
| * @see #getType |
| */ |
| public static final int TYPE_URI = 4; |
| /** |
| * An icon that was created using {@link Icon#createWithAdaptiveBitmap}. |
| * @see #getType |
| */ |
| public static final int TYPE_ADAPTIVE_BITMAP = 5; |
| |
| /** |
| * @hide |
| */ |
| @IntDef({TYPE_BITMAP, TYPE_RESOURCE, TYPE_DATA, TYPE_URI, TYPE_ADAPTIVE_BITMAP}) |
| public @interface IconType { |
| } |
| |
| private static final int VERSION_STREAM_SERIALIZER = 1; |
| |
| private final int mType; |
| |
| private ColorStateList mTintList; |
| static final PorterDuff.Mode DEFAULT_TINT_MODE = Drawable.DEFAULT_TINT_MODE; // SRC_IN |
| private PorterDuff.Mode mTintMode = DEFAULT_TINT_MODE; |
| |
| // To avoid adding unnecessary overhead, we have a few basic objects that get repurposed |
| // based on the value of mType. |
| |
| // TYPE_BITMAP: Bitmap |
| // TYPE_RESOURCE: Resources |
| // TYPE_DATA: DataBytes |
| private Object mObj1; |
| |
| // TYPE_RESOURCE: package name |
| // TYPE_URI: uri string |
| private String mString1; |
| |
| // TYPE_RESOURCE: resId |
| // TYPE_DATA: data length |
| private int mInt1; |
| |
| // TYPE_DATA: data offset |
| private int mInt2; |
| |
| /** |
| * Gets the type of the icon provided. |
| * <p> |
| * Note that new types may be added later, so callers should guard against other |
| * types being returned. |
| */ |
| @IconType |
| public int getType() { |
| return mType; |
| } |
| |
| /** |
| * @return The {@link android.graphics.Bitmap} held by this {@link #TYPE_BITMAP} Icon. |
| * @hide |
| */ |
| public Bitmap getBitmap() { |
| if (mType != TYPE_BITMAP && mType != TYPE_ADAPTIVE_BITMAP) { |
| throw new IllegalStateException("called getBitmap() on " + this); |
| } |
| return (Bitmap) mObj1; |
| } |
| |
| private void setBitmap(Bitmap b) { |
| mObj1 = b; |
| } |
| |
| /** |
| * @return The length of the compressed bitmap byte array held by this {@link #TYPE_DATA} Icon. |
| * @hide |
| */ |
| public int getDataLength() { |
| if (mType != TYPE_DATA) { |
| throw new IllegalStateException("called getDataLength() on " + this); |
| } |
| synchronized (this) { |
| return mInt1; |
| } |
| } |
| |
| /** |
| * @return The offset into the byte array held by this {@link #TYPE_DATA} Icon at which |
| * valid compressed bitmap data is found. |
| * @hide |
| */ |
| public int getDataOffset() { |
| if (mType != TYPE_DATA) { |
| throw new IllegalStateException("called getDataOffset() on " + this); |
| } |
| synchronized (this) { |
| return mInt2; |
| } |
| } |
| |
| /** |
| * @return The byte array held by this {@link #TYPE_DATA} Icon ctonaining compressed |
| * bitmap data. |
| * @hide |
| */ |
| public byte[] getDataBytes() { |
| if (mType != TYPE_DATA) { |
| throw new IllegalStateException("called getDataBytes() on " + this); |
| } |
| synchronized (this) { |
| return (byte[]) mObj1; |
| } |
| } |
| |
| /** |
| * @return The {@link android.content.res.Resources} for this {@link #TYPE_RESOURCE} Icon. |
| * @hide |
| */ |
| public Resources getResources() { |
| if (mType != TYPE_RESOURCE) { |
| throw new IllegalStateException("called getResources() on " + this); |
| } |
| return (Resources) mObj1; |
| } |
| |
| /** |
| * Gets the package used to create this icon. |
| * <p> |
| * Only valid for icons of type {@link #TYPE_RESOURCE}. |
| * Note: This package may not be available if referenced in the future, and it is |
| * up to the caller to ensure safety if this package is re-used and/or persisted. |
| */ |
| @NonNull |
| public String getResPackage() { |
| if (mType != TYPE_RESOURCE) { |
| throw new IllegalStateException("called getResPackage() on " + this); |
| } |
| return mString1; |
| } |
| |
| /** |
| * Gets the resource used to create this icon. |
| * <p> |
| * Only valid for icons of type {@link #TYPE_RESOURCE}. |
| * Note: This resource may not be available if the application changes at all, and it is |
| * up to the caller to ensure safety if this resource is re-used and/or persisted. |
| */ |
| @IdRes |
| public int getResId() { |
| if (mType != TYPE_RESOURCE) { |
| throw new IllegalStateException("called getResId() on " + this); |
| } |
| return mInt1; |
| } |
| |
| /** |
| * @return The URI (as a String) for this {@link #TYPE_URI} Icon. |
| * @hide |
| */ |
| public String getUriString() { |
| if (mType != TYPE_URI) { |
| throw new IllegalStateException("called getUriString() on " + this); |
| } |
| return mString1; |
| } |
| |
| /** |
| * Gets the uri used to create this icon. |
| * <p> |
| * Only valid for icons of type {@link #TYPE_URI}. |
| * Note: This uri may not be available in the future, and it is |
| * up to the caller to ensure safety if this uri is re-used and/or persisted. |
| */ |
| @NonNull |
| public Uri getUri() { |
| return Uri.parse(getUriString()); |
| } |
| |
| private static final String typeToString(int x) { |
| switch (x) { |
| case TYPE_BITMAP: return "BITMAP"; |
| case TYPE_ADAPTIVE_BITMAP: return "BITMAP_MASKABLE"; |
| case TYPE_DATA: return "DATA"; |
| case TYPE_RESOURCE: return "RESOURCE"; |
| case TYPE_URI: return "URI"; |
| default: return "UNKNOWN"; |
| } |
| } |
| |
| /** |
| * Invokes {@link #loadDrawable(Context)} on the given {@link android.os.Handler Handler} |
| * and then sends <code>andThen</code> to the same Handler when finished. |
| * |
| * @param context {@link android.content.Context Context} in which to load the drawable; see |
| * {@link #loadDrawable(Context)} |
| * @param andThen {@link android.os.Message} to send to its target once the drawable |
| * is available. The {@link android.os.Message#obj obj} |
| * property is populated with the Drawable. |
| */ |
| public void loadDrawableAsync(Context context, Message andThen) { |
| if (andThen.getTarget() == null) { |
| throw new IllegalArgumentException("callback message must have a target handler"); |
| } |
| new LoadDrawableTask(context, andThen).runAsync(); |
| } |
| |
| /** |
| * Invokes {@link #loadDrawable(Context)} on a background thread and notifies the <code> |
| * {@link OnDrawableLoadedListener#onDrawableLoaded listener} </code> on the {@code handler} |
| * when finished. |
| * |
| * @param context {@link Context Context} in which to load the drawable; see |
| * {@link #loadDrawable(Context)} |
| * @param listener to be {@link OnDrawableLoadedListener#onDrawableLoaded notified} when |
| * {@link #loadDrawable(Context)} finished |
| * @param handler {@link Handler} on which to notify the {@code listener} |
| */ |
| public void loadDrawableAsync(Context context, final OnDrawableLoadedListener listener, |
| Handler handler) { |
| new LoadDrawableTask(context, handler, listener).runAsync(); |
| } |
| |
| /** |
| * Returns a Drawable that can be used to draw the image inside this Icon, constructing it |
| * if necessary. Depending on the type of image, this may not be something you want to do on |
| * the UI thread, so consider using |
| * {@link #loadDrawableAsync(Context, Message) loadDrawableAsync} instead. |
| * |
| * @param context {@link android.content.Context Context} in which to load the drawable; used |
| * to access {@link android.content.res.Resources Resources}, for example. |
| * @return A fresh instance of a drawable for this image, yours to keep. |
| */ |
| public Drawable loadDrawable(Context context) { |
| final Drawable result = loadDrawableInner(context); |
| if (result != null && (mTintList != null || mTintMode != DEFAULT_TINT_MODE)) { |
| result.mutate(); |
| result.setTintList(mTintList); |
| result.setTintMode(mTintMode); |
| } |
| return result; |
| } |
| |
| /** |
| * Do the heavy lifting of loading the drawable, but stop short of applying any tint. |
| */ |
| private Drawable loadDrawableInner(Context context) { |
| switch (mType) { |
| case TYPE_BITMAP: |
| return new BitmapDrawable(context.getResources(), getBitmap()); |
| case TYPE_ADAPTIVE_BITMAP: |
| return new AdaptiveIconDrawable(null, |
| new BitmapDrawable(context.getResources(), getBitmap())); |
| case TYPE_RESOURCE: |
| if (getResources() == null) { |
| // figure out where to load resources from |
| String resPackage = getResPackage(); |
| if (TextUtils.isEmpty(resPackage)) { |
| // if none is specified, try the given context |
| resPackage = context.getPackageName(); |
| } |
| if ("android".equals(resPackage)) { |
| mObj1 = Resources.getSystem(); |
| } else { |
| final PackageManager pm = context.getPackageManager(); |
| try { |
| ApplicationInfo ai = pm.getApplicationInfo( |
| resPackage, PackageManager.MATCH_UNINSTALLED_PACKAGES); |
| if (ai != null) { |
| mObj1 = pm.getResourcesForApplication(ai); |
| } else { |
| break; |
| } |
| } catch (PackageManager.NameNotFoundException e) { |
| Log.e(TAG, String.format("Unable to find pkg=%s for icon %s", |
| resPackage, this), e); |
| break; |
| } |
| } |
| } |
| try { |
| return getResources().getDrawable(getResId(), context.getTheme()); |
| } catch (RuntimeException e) { |
| Log.e(TAG, String.format("Unable to load resource 0x%08x from pkg=%s", |
| getResId(), |
| getResPackage()), |
| e); |
| } |
| break; |
| case TYPE_DATA: |
| return new BitmapDrawable(context.getResources(), |
| BitmapFactory.decodeByteArray(getDataBytes(), getDataOffset(), getDataLength()) |
| ); |
| case TYPE_URI: |
| final Uri uri = getUri(); |
| final String scheme = uri.getScheme(); |
| InputStream is = null; |
| if (ContentResolver.SCHEME_CONTENT.equals(scheme) |
| || ContentResolver.SCHEME_FILE.equals(scheme)) { |
| try { |
| is = context.getContentResolver().openInputStream(uri); |
| } catch (Exception e) { |
| Log.w(TAG, "Unable to load image from URI: " + uri, e); |
| } |
| } else { |
| try { |
| is = new FileInputStream(new File(mString1)); |
| } catch (FileNotFoundException e) { |
| Log.w(TAG, "Unable to load image from path: " + uri, e); |
| } |
| } |
| if (is != null) { |
| return new BitmapDrawable(context.getResources(), |
| BitmapFactory.decodeStream(is)); |
| } |
| break; |
| } |
| return null; |
| } |
| |
| /** |
| * Load the requested resources under the given userId, if the system allows it, |
| * before actually loading the drawable. |
| * |
| * @hide |
| */ |
| public Drawable loadDrawableAsUser(Context context, int userId) { |
| if (mType == TYPE_RESOURCE) { |
| String resPackage = getResPackage(); |
| if (TextUtils.isEmpty(resPackage)) { |
| resPackage = context.getPackageName(); |
| } |
| if (getResources() == null && !(getResPackage().equals("android"))) { |
| final PackageManager pm = context.getPackageManager(); |
| try { |
| // assign getResources() as the correct user |
| mObj1 = pm.getResourcesForApplicationAsUser(resPackage, userId); |
| } catch (PackageManager.NameNotFoundException e) { |
| Log.e(TAG, String.format("Unable to find pkg=%s user=%d", |
| getResPackage(), |
| userId), |
| e); |
| } |
| } |
| } |
| return loadDrawable(context); |
| } |
| |
| /** @hide */ |
| public static final int MIN_ASHMEM_ICON_SIZE = 128 * (1 << 10); |
| |
| /** |
| * Puts the memory used by this instance into Ashmem memory, if possible. |
| * @hide |
| */ |
| public void convertToAshmem() { |
| if ((mType == TYPE_BITMAP || mType == TYPE_ADAPTIVE_BITMAP) && |
| getBitmap().isMutable() && |
| getBitmap().getAllocationByteCount() >= MIN_ASHMEM_ICON_SIZE) { |
| setBitmap(getBitmap().createAshmemBitmap()); |
| } |
| } |
| |
| /** |
| * Writes a serialized version of an Icon to the specified stream. |
| * |
| * @param stream The stream on which to serialize the Icon. |
| * @hide |
| */ |
| public void writeToStream(OutputStream stream) throws IOException { |
| DataOutputStream dataStream = new DataOutputStream(stream); |
| |
| dataStream.writeInt(VERSION_STREAM_SERIALIZER); |
| dataStream.writeByte(mType); |
| |
| switch (mType) { |
| case TYPE_BITMAP: |
| case TYPE_ADAPTIVE_BITMAP: |
| getBitmap().compress(Bitmap.CompressFormat.PNG, 100, dataStream); |
| break; |
| case TYPE_DATA: |
| dataStream.writeInt(getDataLength()); |
| dataStream.write(getDataBytes(), getDataOffset(), getDataLength()); |
| break; |
| case TYPE_RESOURCE: |
| dataStream.writeUTF(getResPackage()); |
| dataStream.writeInt(getResId()); |
| break; |
| case TYPE_URI: |
| dataStream.writeUTF(getUriString()); |
| break; |
| } |
| } |
| |
| private Icon(int mType) { |
| this.mType = mType; |
| } |
| |
| /** |
| * Create an Icon from the specified stream. |
| * |
| * @param stream The input stream from which to reconstruct the Icon. |
| * @hide |
| */ |
| public static Icon createFromStream(InputStream stream) throws IOException { |
| DataInputStream inputStream = new DataInputStream(stream); |
| |
| final int version = inputStream.readInt(); |
| if (version >= VERSION_STREAM_SERIALIZER) { |
| final int type = inputStream.readByte(); |
| switch (type) { |
| case TYPE_BITMAP: |
| return createWithBitmap(BitmapFactory.decodeStream(inputStream)); |
| case TYPE_ADAPTIVE_BITMAP: |
| return createWithAdaptiveBitmap(BitmapFactory.decodeStream(inputStream)); |
| case TYPE_DATA: |
| final int length = inputStream.readInt(); |
| final byte[] data = new byte[length]; |
| inputStream.read(data, 0 /* offset */, length); |
| return createWithData(data, 0 /* offset */, length); |
| case TYPE_RESOURCE: |
| final String packageName = inputStream.readUTF(); |
| final int resId = inputStream.readInt(); |
| return createWithResource(packageName, resId); |
| case TYPE_URI: |
| final String uriOrPath = inputStream.readUTF(); |
| return createWithContentUri(uriOrPath); |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Compares if this icon is constructed from the same resources as another icon. |
| * Note that this is an inexpensive operation and doesn't do deep Bitmap equality comparisons. |
| * |
| * @param otherIcon the other icon |
| * @return whether this icon is the same as the another one |
| * @hide |
| */ |
| public boolean sameAs(Icon otherIcon) { |
| if (otherIcon == this) { |
| return true; |
| } |
| if (mType != otherIcon.getType()) { |
| return false; |
| } |
| switch (mType) { |
| case TYPE_BITMAP: |
| case TYPE_ADAPTIVE_BITMAP: |
| return getBitmap() == otherIcon.getBitmap(); |
| case TYPE_DATA: |
| return getDataLength() == otherIcon.getDataLength() |
| && getDataOffset() == otherIcon.getDataOffset() |
| && Arrays.equals(getDataBytes(), otherIcon.getDataBytes()); |
| case TYPE_RESOURCE: |
| return getResId() == otherIcon.getResId() |
| && Objects.equals(getResPackage(), otherIcon.getResPackage()); |
| case TYPE_URI: |
| return Objects.equals(getUriString(), otherIcon.getUriString()); |
| } |
| return false; |
| } |
| |
| /** |
| * Create an Icon pointing to a drawable resource. |
| * @param context The context for the application whose resources should be used to resolve the |
| * given resource ID. |
| * @param resId ID of the drawable resource |
| */ |
| public static Icon createWithResource(Context context, @DrawableRes int resId) { |
| if (context == null) { |
| throw new IllegalArgumentException("Context must not be null."); |
| } |
| final Icon rep = new Icon(TYPE_RESOURCE); |
| rep.mInt1 = resId; |
| rep.mString1 = context.getPackageName(); |
| return rep; |
| } |
| |
| /** |
| * Version of createWithResource that takes Resources. Do not use. |
| * @hide |
| */ |
| public static Icon createWithResource(Resources res, @DrawableRes int resId) { |
| if (res == null) { |
| throw new IllegalArgumentException("Resource must not be null."); |
| } |
| final Icon rep = new Icon(TYPE_RESOURCE); |
| rep.mInt1 = resId; |
| rep.mString1 = res.getResourcePackageName(resId); |
| return rep; |
| } |
| |
| /** |
| * Create an Icon pointing to a drawable resource. |
| * @param resPackage Name of the package containing the resource in question |
| * @param resId ID of the drawable resource |
| */ |
| public static Icon createWithResource(String resPackage, @DrawableRes int resId) { |
| if (resPackage == null) { |
| throw new IllegalArgumentException("Resource package name must not be null."); |
| } |
| final Icon rep = new Icon(TYPE_RESOURCE); |
| rep.mInt1 = resId; |
| rep.mString1 = resPackage; |
| return rep; |
| } |
| |
| /** |
| * Create an Icon pointing to a bitmap in memory. |
| * @param bits A valid {@link android.graphics.Bitmap} object |
| */ |
| public static Icon createWithBitmap(Bitmap bits) { |
| if (bits == null) { |
| throw new IllegalArgumentException("Bitmap must not be null."); |
| } |
| final Icon rep = new Icon(TYPE_BITMAP); |
| rep.setBitmap(bits); |
| return rep; |
| } |
| |
| /** |
| * Create an Icon pointing to a bitmap in memory that follows the icon design guideline defined |
| * by {@link AdaptiveIconDrawable}. |
| * @param bits A valid {@link android.graphics.Bitmap} object |
| */ |
| public static Icon createWithAdaptiveBitmap(Bitmap bits) { |
| if (bits == null) { |
| throw new IllegalArgumentException("Bitmap must not be null."); |
| } |
| final Icon rep = new Icon(TYPE_ADAPTIVE_BITMAP); |
| rep.setBitmap(bits); |
| return rep; |
| } |
| |
| /** |
| * Create an Icon pointing to a compressed bitmap stored in a byte array. |
| * @param data Byte array storing compressed bitmap data of a type that |
| * {@link android.graphics.BitmapFactory} |
| * can decode (see {@link android.graphics.Bitmap.CompressFormat}). |
| * @param offset Offset into <code>data</code> at which the bitmap data starts |
| * @param length Length of the bitmap data |
| */ |
| public static Icon createWithData(byte[] data, int offset, int length) { |
| if (data == null) { |
| throw new IllegalArgumentException("Data must not be null."); |
| } |
| final Icon rep = new Icon(TYPE_DATA); |
| rep.mObj1 = data; |
| rep.mInt1 = length; |
| rep.mInt2 = offset; |
| return rep; |
| } |
| |
| /** |
| * Create an Icon pointing to an image file specified by URI. |
| * |
| * @param uri A uri referring to local content:// or file:// image data. |
| */ |
| public static Icon createWithContentUri(String uri) { |
| if (uri == null) { |
| throw new IllegalArgumentException("Uri must not be null."); |
| } |
| final Icon rep = new Icon(TYPE_URI); |
| rep.mString1 = uri; |
| return rep; |
| } |
| |
| /** |
| * Create an Icon pointing to an image file specified by URI. |
| * |
| * @param uri A uri referring to local content:// or file:// image data. |
| */ |
| public static Icon createWithContentUri(Uri uri) { |
| if (uri == null) { |
| throw new IllegalArgumentException("Uri must not be null."); |
| } |
| final Icon rep = new Icon(TYPE_URI); |
| rep.mString1 = uri.toString(); |
| return rep; |
| } |
| |
| /** |
| * Store a color to use whenever this Icon is drawn. |
| * |
| * @param tint a color, as in {@link Drawable#setTint(int)} |
| * @return this same object, for use in chained construction |
| */ |
| public Icon setTint(@ColorInt int tint) { |
| return setTintList(ColorStateList.valueOf(tint)); |
| } |
| |
| /** |
| * Store a color to use whenever this Icon is drawn. |
| * |
| * @param tintList as in {@link Drawable#setTintList(ColorStateList)}, null to remove tint |
| * @return this same object, for use in chained construction |
| */ |
| public Icon setTintList(ColorStateList tintList) { |
| mTintList = tintList; |
| return this; |
| } |
| |
| /** |
| * Store a blending mode to use whenever this Icon is drawn. |
| * |
| * @param mode a blending mode, as in {@link Drawable#setTintMode(PorterDuff.Mode)}, may be null |
| * @return this same object, for use in chained construction |
| */ |
| public Icon setTintMode(PorterDuff.Mode mode) { |
| mTintMode = mode; |
| return this; |
| } |
| |
| /** @hide */ |
| public boolean hasTint() { |
| return (mTintList != null) || (mTintMode != DEFAULT_TINT_MODE); |
| } |
| |
| /** |
| * Create an Icon pointing to an image file specified by path. |
| * |
| * @param path A path to a file that contains compressed bitmap data of |
| * a type that {@link android.graphics.BitmapFactory} can decode. |
| */ |
| public static Icon createWithFilePath(String path) { |
| if (path == null) { |
| throw new IllegalArgumentException("Path must not be null."); |
| } |
| final Icon rep = new Icon(TYPE_URI); |
| rep.mString1 = path; |
| return rep; |
| } |
| |
| @Override |
| public String toString() { |
| final StringBuilder sb = new StringBuilder("Icon(typ=").append(typeToString(mType)); |
| switch (mType) { |
| case TYPE_BITMAP: |
| case TYPE_ADAPTIVE_BITMAP: |
| sb.append(" size=") |
| .append(getBitmap().getWidth()) |
| .append("x") |
| .append(getBitmap().getHeight()); |
| break; |
| case TYPE_RESOURCE: |
| sb.append(" pkg=") |
| .append(getResPackage()) |
| .append(" id=") |
| .append(String.format("0x%08x", getResId())); |
| break; |
| case TYPE_DATA: |
| sb.append(" len=").append(getDataLength()); |
| if (getDataOffset() != 0) { |
| sb.append(" off=").append(getDataOffset()); |
| } |
| break; |
| case TYPE_URI: |
| sb.append(" uri=").append(getUriString()); |
| break; |
| } |
| if (mTintList != null) { |
| sb.append(" tint="); |
| String sep = ""; |
| for (int c : mTintList.getColors()) { |
| sb.append(String.format("%s0x%08x", sep, c)); |
| sep = "|"; |
| } |
| } |
| if (mTintMode != DEFAULT_TINT_MODE) sb.append(" mode=").append(mTintMode); |
| sb.append(")"); |
| return sb.toString(); |
| } |
| |
| /** |
| * Parcelable interface |
| */ |
| public int describeContents() { |
| return (mType == TYPE_BITMAP || mType == TYPE_ADAPTIVE_BITMAP || mType == TYPE_DATA) |
| ? Parcelable.CONTENTS_FILE_DESCRIPTOR : 0; |
| } |
| |
| // ===== Parcelable interface ====== |
| |
| private Icon(Parcel in) { |
| this(in.readInt()); |
| switch (mType) { |
| case TYPE_BITMAP: |
| case TYPE_ADAPTIVE_BITMAP: |
| final Bitmap bits = Bitmap.CREATOR.createFromParcel(in); |
| mObj1 = bits; |
| break; |
| case TYPE_RESOURCE: |
| final String pkg = in.readString(); |
| final int resId = in.readInt(); |
| mString1 = pkg; |
| mInt1 = resId; |
| break; |
| case TYPE_DATA: |
| final int len = in.readInt(); |
| final byte[] a = in.readBlob(); |
| if (len != a.length) { |
| throw new RuntimeException("internal unparceling error: blob length (" |
| + a.length + ") != expected length (" + len + ")"); |
| } |
| mInt1 = len; |
| mObj1 = a; |
| break; |
| case TYPE_URI: |
| final String uri = in.readString(); |
| mString1 = uri; |
| break; |
| default: |
| throw new RuntimeException("invalid " |
| + this.getClass().getSimpleName() + " type in parcel: " + mType); |
| } |
| if (in.readInt() == 1) { |
| mTintList = ColorStateList.CREATOR.createFromParcel(in); |
| } |
| mTintMode = PorterDuff.intToMode(in.readInt()); |
| } |
| |
| @Override |
| public void writeToParcel(Parcel dest, int flags) { |
| dest.writeInt(mType); |
| switch (mType) { |
| case TYPE_BITMAP: |
| case TYPE_ADAPTIVE_BITMAP: |
| final Bitmap bits = getBitmap(); |
| getBitmap().writeToParcel(dest, flags); |
| break; |
| case TYPE_RESOURCE: |
| dest.writeString(getResPackage()); |
| dest.writeInt(getResId()); |
| break; |
| case TYPE_DATA: |
| dest.writeInt(getDataLength()); |
| dest.writeBlob(getDataBytes(), getDataOffset(), getDataLength()); |
| break; |
| case TYPE_URI: |
| dest.writeString(getUriString()); |
| break; |
| } |
| if (mTintList == null) { |
| dest.writeInt(0); |
| } else { |
| dest.writeInt(1); |
| mTintList.writeToParcel(dest, flags); |
| } |
| dest.writeInt(PorterDuff.modeToInt(mTintMode)); |
| } |
| |
| public static final Parcelable.Creator<Icon> CREATOR |
| = new Parcelable.Creator<Icon>() { |
| public Icon createFromParcel(Parcel in) { |
| return new Icon(in); |
| } |
| |
| public Icon[] newArray(int size) { |
| return new Icon[size]; |
| } |
| }; |
| |
| /** |
| * Scale down a bitmap to a given max width and max height. The scaling will be done in a uniform way |
| * @param bitmap the bitmap to scale down |
| * @param maxWidth the maximum width allowed |
| * @param maxHeight the maximum height allowed |
| * |
| * @return the scaled bitmap if necessary or the original bitmap if no scaling was needed |
| * @hide |
| */ |
| public static Bitmap scaleDownIfNecessary(Bitmap bitmap, int maxWidth, int maxHeight) { |
| int bitmapWidth = bitmap.getWidth(); |
| int bitmapHeight = bitmap.getHeight(); |
| if (bitmapWidth > maxWidth || bitmapHeight > maxHeight) { |
| float scale = Math.min((float) maxWidth / bitmapWidth, |
| (float) maxHeight / bitmapHeight); |
| bitmap = Bitmap.createScaledBitmap(bitmap, |
| Math.max(1, (int) (scale * bitmapWidth)), |
| Math.max(1, (int) (scale * bitmapHeight)), |
| true /* filter */); |
| } |
| return bitmap; |
| } |
| |
| /** |
| * Scale down this icon to a given max width and max height. |
| * The scaling will be done in a uniform way and currently only bitmaps are supported. |
| * @param maxWidth the maximum width allowed |
| * @param maxHeight the maximum height allowed |
| * |
| * @hide |
| */ |
| public void scaleDownIfNecessary(int maxWidth, int maxHeight) { |
| if (mType != TYPE_BITMAP && mType != TYPE_ADAPTIVE_BITMAP) { |
| return; |
| } |
| Bitmap bitmap = getBitmap(); |
| setBitmap(scaleDownIfNecessary(bitmap, maxWidth, maxHeight)); |
| } |
| |
| /** |
| * Implement this interface to receive a callback when |
| * {@link #loadDrawableAsync(Context, OnDrawableLoadedListener, Handler) loadDrawableAsync} |
| * is finished and your Drawable is ready. |
| */ |
| public interface OnDrawableLoadedListener { |
| void onDrawableLoaded(Drawable d); |
| } |
| |
| /** |
| * Wrapper around loadDrawable that does its work on a pooled thread and then |
| * fires back the given (targeted) Message. |
| */ |
| private class LoadDrawableTask implements Runnable { |
| final Context mContext; |
| final Message mMessage; |
| |
| public LoadDrawableTask(Context context, final Handler handler, |
| final OnDrawableLoadedListener listener) { |
| mContext = context; |
| mMessage = Message.obtain(handler, new Runnable() { |
| @Override |
| public void run() { |
| listener.onDrawableLoaded((Drawable) mMessage.obj); |
| } |
| }); |
| } |
| |
| public LoadDrawableTask(Context context, Message message) { |
| mContext = context; |
| mMessage = message; |
| } |
| |
| @Override |
| public void run() { |
| mMessage.obj = loadDrawable(mContext); |
| mMessage.sendToTarget(); |
| } |
| |
| public void runAsync() { |
| AsyncTask.THREAD_POOL_EXECUTOR.execute(this); |
| } |
| } |
| } |
