am ae4bd059: ADT/Layoutlib: Reimplement parts of BitmapFactory
Merge commit 'ae4bd059caa71aa4652c0f07fde7c2687169906e' into eclair-plus-aosp
* commit 'ae4bd059caa71aa4652c0f07fde7c2687169906e':
ADT/Layoutlib: Reimplement parts of BitmapFactory
diff --git a/tools/layoutlib/bridge/src/android/graphics/Bitmap.java b/tools/layoutlib/bridge/src/android/graphics/Bitmap.java
index ff1b295..35f022e 100644
--- a/tools/layoutlib/bridge/src/android/graphics/Bitmap.java
+++ b/tools/layoutlib/bridge/src/android/graphics/Bitmap.java
@@ -20,6 +20,7 @@
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
+import java.io.InputStream;
import javax.imageio.ImageIO;
@@ -33,6 +34,12 @@
mImage = ImageIO.read(input);
}
+ public Bitmap(InputStream is) throws IOException {
+ super(1, true, null, -1);
+
+ mImage = ImageIO.read(is);
+ }
+
Bitmap(BufferedImage image) {
super(1, true, null, -1);
mImage = image;
@@ -237,4 +244,35 @@
return createBitmap(colors, 0, width, width, height, config);
}
+ public static Bitmap createScaledBitmap(Bitmap src, int dstWidth,
+ int dstHeight, boolean filter) {
+ Matrix m;
+ synchronized (Bitmap.class) {
+ // small pool of just 1 matrix
+ m = sScaleMatrix;
+ sScaleMatrix = null;
+ }
+
+ if (m == null) {
+ m = new Matrix();
+ }
+
+ final int width = src.getWidth();
+ final int height = src.getHeight();
+ final float sx = dstWidth / (float)width;
+ final float sy = dstHeight / (float)height;
+ m.setScale(sx, sy);
+ Bitmap b = Bitmap.createBitmap(src, 0, 0, width, height, m, filter);
+
+ synchronized (Bitmap.class) {
+ // do we need to check for null? why not just assign everytime?
+ if (sScaleMatrix == null) {
+ sScaleMatrix = m;
+ }
+ }
+
+ return b;
+ }
+
+
}
diff --git a/tools/layoutlib/bridge/src/android/graphics/BitmapFactory.java b/tools/layoutlib/bridge/src/android/graphics/BitmapFactory.java
new file mode 100644
index 0000000..e978fe8
--- /dev/null
+++ b/tools/layoutlib/bridge/src/android/graphics/BitmapFactory.java
@@ -0,0 +1,566 @@
+/*
+ * Copyright (C) 2010 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;
+
+import android.content.res.AssetManager;
+import android.content.res.Resources;
+import android.util.DisplayMetrics;
+import android.util.TypedValue;
+
+import java.io.BufferedInputStream;
+import java.io.FileDescriptor;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * Creates Bitmap objects from various sources, including files, streams,
+ * and byte-arrays.
+ */
+public class BitmapFactory {
+ public static class Options {
+ /**
+ * Create a default Options object, which if left unchanged will give
+ * the same result from the decoder as if null were passed.
+ */
+ public Options() {
+ inDither = true;
+ inScaled = true;
+ }
+
+ /**
+ * If set to true, the decoder will return null (no bitmap), but
+ * the out... fields will still be set, allowing the caller to query
+ * the bitmap without having to allocate the memory for its pixels.
+ */
+ public boolean inJustDecodeBounds;
+
+ /**
+ * If set to a value > 1, requests the decoder to subsample the original
+ * image, returning a smaller image to save memory. The sample size is
+ * the number of pixels in either dimension that correspond to a single
+ * pixel in the decoded bitmap. For example, inSampleSize == 4 returns
+ * an image that is 1/4 the width/height of the original, and 1/16 the
+ * number of pixels. Any value <= 1 is treated the same as 1. Note: the
+ * decoder will try to fulfill this request, but the resulting bitmap
+ * may have different dimensions that precisely what has been requested.
+ * Also, powers of 2 are often faster/easier for the decoder to honor.
+ */
+ public int inSampleSize;
+
+ /**
+ * If this is non-null, the decoder will try to decode into this
+ * internal configuration. If it is null, or the request cannot be met,
+ * the decoder will try to pick the best matching config based on the
+ * system's screen depth, and characteristics of the original image such
+ * as if it has per-pixel alpha (requiring a config that also does).
+ */
+ public Bitmap.Config inPreferredConfig;
+
+ /**
+ * If dither is true, the decoder will attempt to dither the decoded
+ * image.
+ */
+ public boolean inDither;
+
+ /**
+ * The pixel density to use for the bitmap. This will always result
+ * in the returned bitmap having a density set for it (see
+ * {@link Bitmap#setDensity(int) Bitmap.setDensity(int)). In addition,
+ * if {@link #inScaled} is set (which it is by default} and this
+ * density does not match {@link #inTargetDensity}, then the bitmap
+ * will be scaled to the target density before being returned.
+ *
+ * <p>If this is 0,
+ * {@link BitmapFactory#decodeResource(Resources, int)},
+ * {@link BitmapFactory#decodeResource(Resources, int, android.graphics.BitmapFactory.Options)},
+ * and {@link BitmapFactory#decodeResourceStream}
+ * will fill in the density associated with the resource. The other
+ * functions will leave it as-is and no density will be applied.
+ *
+ * @see #inTargetDensity
+ * @see #inScreenDensity
+ * @see #inScaled
+ * @see Bitmap#setDensity(int)
+ * @see android.util.DisplayMetrics#densityDpi
+ */
+ public int inDensity;
+
+ /**
+ * The pixel density of the destination this bitmap will be drawn to.
+ * This is used in conjunction with {@link #inDensity} and
+ * {@link #inScaled} to determine if and how to scale the bitmap before
+ * returning it.
+ *
+ * <p>If this is 0,
+ * {@link BitmapFactory#decodeResource(Resources, int)},
+ * {@link BitmapFactory#decodeResource(Resources, int, android.graphics.BitmapFactory.Options)},
+ * and {@link BitmapFactory#decodeResourceStream}
+ * will fill in the density associated the Resources object's
+ * DisplayMetrics. The other
+ * functions will leave it as-is and no scaling for density will be
+ * performed.
+ *
+ * @see #inDensity
+ * @see #inScreenDensity
+ * @see #inScaled
+ * @see android.util.DisplayMetrics#densityDpi
+ */
+ public int inTargetDensity;
+
+ /**
+ * The pixel density of the actual screen that is being used. This is
+ * purely for applications running in density compatibility code, where
+ * {@link #inTargetDensity} is actually the density the application
+ * sees rather than the real screen density.
+ *
+ * <p>By setting this, you
+ * allow the loading code to avoid scaling a bitmap that is currently
+ * in the screen density up/down to the compatibility density. Instead,
+ * if {@link #inDensity} is the same as {@link #inScreenDensity}, the
+ * bitmap will be left as-is. Anything using the resulting bitmap
+ * must also used {@link Bitmap#getScaledWidth(int)
+ * Bitmap.getScaledWidth} and {@link Bitmap#getScaledHeight
+ * Bitmap.getScaledHeight} to account for any different between the
+ * bitmap's density and the target's density.
+ *
+ * <p>This is never set automatically for the caller by
+ * {@link BitmapFactory} itself. It must be explicitly set, since the
+ * caller must deal with the resulting bitmap in a density-aware way.
+ *
+ * @see #inDensity
+ * @see #inTargetDensity
+ * @see #inScaled
+ * @see android.util.DisplayMetrics#densityDpi
+ */
+ public int inScreenDensity;
+
+ /**
+ * When this flag is set, if {@link #inDensity} and
+ * {@link #inTargetDensity} are not 0, the
+ * bitmap will be scaled to match {@link #inTargetDensity} when loaded,
+ * rather than relying on the graphics system scaling it each time it
+ * is drawn to a Canvas.
+ *
+ * <p>This flag is turned on by default and should be turned off if you need
+ * a non-scaled version of the bitmap. Nine-patch bitmaps ignore this
+ * flag and are always scaled.
+ */
+ public boolean inScaled;
+
+ /**
+ * If this is set to true, then the resulting bitmap will allocate its
+ * pixels such that they can be purged if the system needs to reclaim
+ * memory. In that instance, when the pixels need to be accessed again
+ * (e.g. the bitmap is drawn, getPixels() is called), they will be
+ * automatically re-decoded.
+ *
+ * For the re-decode to happen, the bitmap must have access to the
+ * encoded data, either by sharing a reference to the input
+ * or by making a copy of it. This distinction is controlled by
+ * inInputShareable. If this is true, then the bitmap may keep a shallow
+ * reference to the input. If this is false, then the bitmap will
+ * explicitly make a copy of the input data, and keep that. Even if
+ * sharing is allowed, the implementation may still decide to make a
+ * deep copy of the input data.
+ */
+ public boolean inPurgeable;
+
+ /**
+ * This field works in conjuction with inPurgeable. If inPurgeable is
+ * false, then this field is ignored. If inPurgeable is true, then this
+ * field determines whether the bitmap can share a reference to the
+ * input data (inputstream, array, etc.) or if it must make a deep copy.
+ */
+ public boolean inInputShareable;
+
+ /**
+ * Normally bitmap allocations count against the dalvik heap, which
+ * means they help trigger GCs when a lot have been allocated. However,
+ * in rare cases, the caller may want to allocate the bitmap outside of
+ * that heap. To request that, set inNativeAlloc to true. In these
+ * rare instances, it is solely up to the caller to ensure that OOM is
+ * managed explicitly by calling bitmap.recycle() as soon as such a
+ * bitmap is no longer needed.
+ *
+ * @hide pending API council approval
+ */
+ public boolean inNativeAlloc;
+
+ /**
+ * The resulting width of the bitmap, set independent of the state of
+ * inJustDecodeBounds. However, if there is an error trying to decode,
+ * outWidth will be set to -1.
+ */
+ public int outWidth;
+
+ /**
+ * The resulting height of the bitmap, set independent of the state of
+ * inJustDecodeBounds. However, if there is an error trying to decode,
+ * outHeight will be set to -1.
+ */
+ public int outHeight;
+
+ /**
+ * If known, this string is set to the mimetype of the decoded image.
+ * If not know, or there is an error, it is set to null.
+ */
+ public String outMimeType;
+
+ /**
+ * Temp storage to use for decoding. Suggest 16K or so.
+ */
+ public byte[] inTempStorage;
+
+ private native void requestCancel();
+
+ /**
+ * Flag to indicate that cancel has been called on this object. This
+ * is useful if there's an intermediary that wants to first decode the
+ * bounds and then decode the image. In that case the intermediary
+ * can check, inbetween the bounds decode and the image decode, to see
+ * if the operation is canceled.
+ */
+ public boolean mCancel;
+
+ /**
+ * This can be called from another thread while this options object is
+ * inside a decode... call. Calling this will notify the decoder that
+ * it should cancel its operation. This is not guaranteed to cancel
+ * the decode, but if it does, the decoder... operation will return
+ * null, or if inJustDecodeBounds is true, will set outWidth/outHeight
+ * to -1
+ */
+ public void requestCancelDecode() {
+ mCancel = true;
+ requestCancel();
+ }
+ }
+
+ /**
+ * Decode a file path into a bitmap. If the specified file name is null,
+ * or cannot be decoded into a bitmap, the function returns null.
+ *
+ * @param pathName complete path name for the file to be decoded.
+ * @param opts null-ok; Options that control downsampling and whether the
+ * image should be completely decoded, or just is size returned.
+ * @return The decoded bitmap, or null if the image data could not be
+ * decoded, or, if opts is non-null, if opts requested only the
+ * size be returned (in opts.outWidth and opts.outHeight)
+ */
+ public static Bitmap decodeFile(String pathName, Options opts) {
+ Bitmap bm = null;
+ InputStream stream = null;
+ try {
+ stream = new FileInputStream(pathName);
+ bm = decodeStream(stream, null, opts);
+ } catch (Exception e) {
+ /* do nothing.
+ If the exception happened on open, bm will be null.
+ */
+ } finally {
+ if (stream != null) {
+ try {
+ stream.close();
+ } catch (IOException e) {
+ // do nothing here
+ }
+ }
+ }
+ return bm;
+ }
+
+ /**
+ * Decode a file path into a bitmap. If the specified file name is null,
+ * or cannot be decoded into a bitmap, the function returns null.
+ *
+ * @param pathName complete path name for the file to be decoded.
+ * @return the resulting decoded bitmap, or null if it could not be decoded.
+ */
+ public static Bitmap decodeFile(String pathName) {
+ return decodeFile(pathName, null);
+ }
+
+ /**
+ * Decode a new Bitmap from an InputStream. This InputStream was obtained from
+ * resources, which we pass to be able to scale the bitmap accordingly.
+ */
+ public static Bitmap decodeResourceStream(Resources res, TypedValue value,
+ InputStream is, Rect pad, Options opts) {
+
+ if (opts == null) {
+ opts = new Options();
+ }
+
+ if (opts.inDensity == 0 && value != null) {
+ final int density = value.density;
+ if (density == TypedValue.DENSITY_DEFAULT) {
+ opts.inDensity = DisplayMetrics.DENSITY_DEFAULT;
+ } else if (density != TypedValue.DENSITY_NONE) {
+ opts.inDensity = density;
+ }
+ }
+
+ if (opts.inTargetDensity == 0 && res != null) {
+ opts.inTargetDensity = res.getDisplayMetrics().densityDpi;
+ }
+
+ return decodeStream(is, pad, opts);
+ }
+
+ /**
+ * Synonym for opening the given resource and calling
+ * {@link #decodeResourceStream}.
+ *
+ * @param res The resources object containing the image data
+ * @param id The resource id of the image data
+ * @param opts null-ok; Options that control downsampling and whether the
+ * image should be completely decoded, or just is size returned.
+ * @return The decoded bitmap, or null if the image data could not be
+ * decoded, or, if opts is non-null, if opts requested only the
+ * size be returned (in opts.outWidth and opts.outHeight)
+ */
+ public static Bitmap decodeResource(Resources res, int id, Options opts) {
+ Bitmap bm = null;
+ InputStream is = null;
+
+ try {
+ final TypedValue value = new TypedValue();
+ is = res.openRawResource(id, value);
+
+ bm = decodeResourceStream(res, value, is, null, opts);
+ } catch (Exception e) {
+ /* do nothing.
+ If the exception happened on open, bm will be null.
+ If it happened on close, bm is still valid.
+ */
+ } finally {
+ try {
+ if (is != null) is.close();
+ } catch (IOException e) {
+ // Ignore
+ }
+ }
+
+ return bm;
+ }
+
+ /**
+ * Synonym for {@link #decodeResource(Resources, int, android.graphics.BitmapFactory.Options)}
+ * will null Options.
+ *
+ * @param res The resources object containing the image data
+ * @param id The resource id of the image data
+ * @return The decoded bitmap, or null if the image could not be decode.
+ */
+ public static Bitmap decodeResource(Resources res, int id) {
+ return decodeResource(res, id, null);
+ }
+
+ /**
+ * Decode an immutable bitmap from the specified byte array.
+ *
+ * @param data byte array of compressed image data
+ * @param offset offset into imageData for where the decoder should begin
+ * parsing.
+ * @param length the number of bytes, beginning at offset, to parse
+ * @param opts null-ok; Options that control downsampling and whether the
+ * image should be completely decoded, or just is size returned.
+ * @return The decoded bitmap, or null if the image data could not be
+ * decoded, or, if opts is non-null, if opts requested only the
+ * size be returned (in opts.outWidth and opts.outHeight)
+ */
+ public static Bitmap decodeByteArray(byte[] data, int offset, int length, Options opts) {
+ if ((offset | length) < 0 || data.length < offset + length) {
+ throw new ArrayIndexOutOfBoundsException();
+ }
+
+ // FIXME: implement as needed, but it's unlikely that this is needed in the context of the bridge.
+ return null;
+ //return nativeDecodeByteArray(data, offset, length, opts);
+ }
+
+ /**
+ * Decode an immutable bitmap from the specified byte array.
+ *
+ * @param data byte array of compressed image data
+ * @param offset offset into imageData for where the decoder should begin
+ * parsing.
+ * @param length the number of bytes, beginning at offset, to parse
+ * @return The decoded bitmap, or null if the image could not be decode.
+ */
+ public static Bitmap decodeByteArray(byte[] data, int offset, int length) {
+ return decodeByteArray(data, offset, length, null);
+ }
+
+ /**
+ * Decode an input stream into a bitmap. If the input stream is null, or
+ * cannot be used to decode a bitmap, the function returns null.
+ * The stream's position will be where ever it was after the encoded data
+ * was read.
+ *
+ * @param is The input stream that holds the raw data to be decoded into a
+ * bitmap.
+ * @param outPadding If not null, return the padding rect for the bitmap if
+ * it exists, otherwise set padding to [-1,-1,-1,-1]. If
+ * no bitmap is returned (null) then padding is
+ * unchanged.
+ * @param opts null-ok; Options that control downsampling and whether the
+ * image should be completely decoded, or just is size returned.
+ * @return The decoded bitmap, or null if the image data could not be
+ * decoded, or, if opts is non-null, if opts requested only the
+ * size be returned (in opts.outWidth and opts.outHeight)
+ */
+ public static Bitmap decodeStream(InputStream is, Rect outPadding, Options opts) {
+ // we don't throw in this case, thus allowing the caller to only check
+ // the cache, and not force the image to be decoded.
+ if (is == null) {
+ return null;
+ }
+
+ // we need mark/reset to work properly
+
+ if (!is.markSupported()) {
+ is = new BufferedInputStream(is, 16 * 1024);
+ }
+
+ // so we can call reset() if a given codec gives up after reading up to
+ // this many bytes. FIXME: need to find out from the codecs what this
+ // value should be.
+ is.mark(1024);
+
+ Bitmap bm;
+
+ if (is instanceof AssetManager.AssetInputStream) {
+ // FIXME: log this.
+ return null;
+ } else {
+ // pass some temp storage down to the native code. 1024 is made up,
+ // but should be large enough to avoid too many small calls back
+ // into is.read(...) This number is not related to the value passed
+ // to mark(...) above.
+ try {
+ bm = new Bitmap(is);
+ } catch (IOException e) {
+ return null;
+ }
+ }
+
+ return finishDecode(bm, outPadding, opts);
+ }
+
+ private static Bitmap finishDecode(Bitmap bm, Rect outPadding, Options opts) {
+ if (bm == null || opts == null) {
+ return bm;
+ }
+
+ final int density = opts.inDensity;
+ if (density == 0) {
+ return bm;
+ }
+
+ bm.setDensity(density);
+ final int targetDensity = opts.inTargetDensity;
+ if (targetDensity == 0 || density == targetDensity
+ || density == opts.inScreenDensity) {
+ return bm;
+ }
+
+ byte[] np = bm.getNinePatchChunk();
+ final boolean isNinePatch = false; //np != null && NinePatch.isNinePatchChunk(np);
+ if (opts.inScaled || isNinePatch) {
+ float scale = targetDensity / (float)density;
+ // TODO: This is very inefficient and should be done in native by Skia
+ final Bitmap oldBitmap = bm;
+ bm = Bitmap.createScaledBitmap(oldBitmap, (int) (bm.getWidth() * scale + 0.5f),
+ (int) (bm.getHeight() * scale + 0.5f), true);
+ oldBitmap.recycle();
+
+ if (isNinePatch) {
+ //np = nativeScaleNinePatch(np, scale, outPadding);
+ bm.setNinePatchChunk(np);
+ }
+ bm.setDensity(targetDensity);
+ }
+
+ return bm;
+ }
+
+ /**
+ * Decode an input stream into a bitmap. If the input stream is null, or
+ * cannot be used to decode a bitmap, the function returns null.
+ * The stream's position will be where ever it was after the encoded data
+ * was read.
+ *
+ * @param is The input stream that holds the raw data to be decoded into a
+ * bitmap.
+ * @return The decoded bitmap, or null if the image data could not be
+ * decoded, or, if opts is non-null, if opts requested only the
+ * size be returned (in opts.outWidth and opts.outHeight)
+ */
+ public static Bitmap decodeStream(InputStream is) {
+ return decodeStream(is, null, null);
+ }
+
+ /**
+ * Decode a bitmap from the file descriptor. If the bitmap cannot be decoded
+ * return null. The position within the descriptor will not be changed when
+ * this returns, so the descriptor can be used again as-is.
+ *
+ * @param fd The file descriptor containing the bitmap data to decode
+ * @param outPadding If not null, return the padding rect for the bitmap if
+ * it exists, otherwise set padding to [-1,-1,-1,-1]. If
+ * no bitmap is returned (null) then padding is
+ * unchanged.
+ * @param opts null-ok; Options that control downsampling and whether the
+ * image should be completely decoded, or just is size returned.
+ * @return the decoded bitmap, or null
+ */
+ public static Bitmap decodeFileDescriptor(FileDescriptor fd, Rect outPadding, Options opts) {
+ return null;
+
+ /* FIXME: implement as needed
+ try {
+ if (MemoryFile.isMemoryFile(fd)) {
+ int mappedlength = MemoryFile.getMappedSize(fd);
+ MemoryFile file = new MemoryFile(fd, mappedlength, "r");
+ InputStream is = file.getInputStream();
+ Bitmap bm = decodeStream(is, outPadding, opts);
+ return finishDecode(bm, outPadding, opts);
+ }
+ } catch (IOException ex) {
+ // invalid filedescriptor, no need to call nativeDecodeFileDescriptor()
+ return null;
+ }
+ //Bitmap bm = nativeDecodeFileDescriptor(fd, outPadding, opts);
+ //return finishDecode(bm, outPadding, opts);
+ */
+ }
+
+ /**
+ * Decode a bitmap from the file descriptor. If the bitmap cannot be decoded
+ * return null. The position within the descriptor will not be changed when
+ * this returns, so the descriptor can be used again as is.
+ *
+ * @param fd The file descriptor containing the bitmap data to decode
+ * @return the decoded bitmap, or null
+ */
+ public static Bitmap decodeFileDescriptor(FileDescriptor fd) {
+ return decodeFileDescriptor(fd, null, null);
+ }
+}
+
diff --git a/tools/layoutlib/create/src/com/android/tools/layoutlib/create/CreateInfo.java b/tools/layoutlib/create/src/com/android/tools/layoutlib/create/CreateInfo.java
index 5a13b0b..2623570 100644
--- a/tools/layoutlib/create/src/com/android/tools/layoutlib/create/CreateInfo.java
+++ b/tools/layoutlib/create/src/com/android/tools/layoutlib/create/CreateInfo.java
@@ -43,6 +43,7 @@
public final static String[] RENAMED_CLASSES =
new String[] {
"android.graphics.Bitmap", "android.graphics._Original_Bitmap",
+ "android.graphics.BitmapFactory", "android.graphics._Original_BitmapFactory",
"android.graphics.BitmapShader", "android.graphics._Original_BitmapShader",
"android.graphics.Canvas", "android.graphics._Original_Canvas",
"android.graphics.ComposeShader", "android.graphics._Original_ComposeShader",