Examples with Canvas android.graphics.Canvas used on opensource projects

Example 41 with Canvas

use of android.graphics.Canvas in project platform_frameworks_base by android.

the class IconTest method testAsync.

@SmallTest
public void testAsync() throws Exception {
    final Bitmap bit1 = ((BitmapDrawable) getContext().getDrawable(R.drawable.landscape)).getBitmap();
    final File dir = getContext().getExternalFilesDir(null);
    final File file1 = new File(dir, "async-original.png");
    bit1.compress(Bitmap.CompressFormat.PNG, 100, new FileOutputStream(file1));
    final Icon im1 = Icon.createWithFilePath(file1.toString());
    final HandlerThread thd = new HandlerThread("testAsync");
    thd.start();
    final Handler h = new Handler(thd.getLooper());
    L(TAG, "asyncTest: dispatching load to thread: " + thd);
    im1.loadDrawableAsync(mContext, new Icon.OnDrawableLoadedListener() {

        @Override
        public void onDrawableLoaded(Drawable draw1) {
            L(TAG, "asyncTest: thread: loading drawable");
            L(TAG, "asyncTest: thread: loaded: %dx%d", draw1.getIntrinsicWidth(), draw1.getIntrinsicHeight());
            final Bitmap test1 = Bitmap.createBitmap(draw1.getIntrinsicWidth(), draw1.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
            draw1.setBounds(0, 0, test1.getWidth(), test1.getHeight());
            draw1.draw(new Canvas(test1));
            try {
                test1.compress(Bitmap.CompressFormat.PNG, 100, new FileOutputStream(new File(dir, "async-test.png")));
            } catch (java.io.FileNotFoundException ex) {
                fail("couldn't create test file: " + ex);
            }
            if (!equalBitmaps(bit1, test1)) {
                findBitmapDifferences(bit1, test1);
                fail("testAsync: file1 differs, check " + dir);
            }
        }
    }, h);
    L(TAG, "asyncTest: awaiting result");
    // ;_;
    Thread.sleep(500);
    assertTrue("async-test.png does not exist!", new File(dir, "async-test.png").exists());
    L(TAG, "asyncTest: done");
}

Example 42 with Canvas

use of android.graphics.Canvas in project platform_frameworks_base by android.

the class RippleDrawable method updateMaskShaderIfNeeded.

/**
     * @return whether we need to use a mask
     */
private void updateMaskShaderIfNeeded() {
    if (mHasValidMask) {
        return;
    }
    final int maskType = getMaskType();
    if (maskType == MASK_UNKNOWN) {
        return;
    }
    mHasValidMask = true;
    final Rect bounds = getBounds();
    if (maskType == MASK_NONE || bounds.isEmpty()) {
        if (mMaskBuffer != null) {
            mMaskBuffer.recycle();
            mMaskBuffer = null;
            mMaskShader = null;
            mMaskCanvas = null;
        }
        mMaskMatrix = null;
        mMaskColorFilter = null;
        return;
    }
    // Ensure we have a correctly-sized buffer.
    if (mMaskBuffer == null || mMaskBuffer.getWidth() != bounds.width() || mMaskBuffer.getHeight() != bounds.height()) {
        if (mMaskBuffer != null) {
            mMaskBuffer.recycle();
        }
        mMaskBuffer = Bitmap.createBitmap(bounds.width(), bounds.height(), Bitmap.Config.ALPHA_8);
        mMaskShader = new BitmapShader(mMaskBuffer, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
        mMaskCanvas = new Canvas(mMaskBuffer);
    } else {
        mMaskBuffer.eraseColor(Color.TRANSPARENT);
    }
    if (mMaskMatrix == null) {
        mMaskMatrix = new Matrix();
    } else {
        mMaskMatrix.reset();
    }
    if (mMaskColorFilter == null) {
        mMaskColorFilter = new PorterDuffColorFilter(0, PorterDuff.Mode.SRC_IN);
    }
    // Draw the appropriate mask anchored to (0,0).
    final int left = bounds.left;
    final int top = bounds.top;
    mMaskCanvas.translate(-left, -top);
    if (maskType == MASK_EXPLICIT) {
        drawMask(mMaskCanvas);
    } else if (maskType == MASK_CONTENT) {
        drawContent(mMaskCanvas);
    }
    mMaskCanvas.translate(left, top);
}

Example 43 with Canvas

use of android.graphics.Canvas in project platform_frameworks_base by android.

the class IconTest method testWithFile.

@SmallTest
public void testWithFile() throws Exception {
    final Bitmap bit1 = ((BitmapDrawable) getContext().getDrawable(R.drawable.landscape)).getBitmap();
    final File dir = getContext().getExternalFilesDir(null);
    final File file1 = new File(dir, "file1-original.png");
    bit1.compress(Bitmap.CompressFormat.PNG, 100, new FileOutputStream(file1));
    final Icon im1 = Icon.createWithFilePath(file1.toString());
    final Drawable draw1 = im1.loadDrawable(mContext);
    final Bitmap test1 = Bitmap.createBitmap(draw1.getIntrinsicWidth(), draw1.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
    draw1.setBounds(0, 0, test1.getWidth(), test1.getHeight());
    draw1.draw(new Canvas(test1));
    test1.compress(Bitmap.CompressFormat.PNG, 100, new FileOutputStream(new File(dir, "file1-test.png")));
    if (!equalBitmaps(bit1, test1)) {
        findBitmapDifferences(bit1, test1);
        fail("testWithFile: file1 differs, check " + dir);
    }
}

Example 44 with Canvas

use of android.graphics.Canvas in project platform_frameworks_base by android.

the class TestDocumentsProvider method openDocumentThumbnail.

@Override
public AssetFileDescriptor openDocumentThumbnail(String docId, Point sizeHint, CancellationSignal signal) throws FileNotFoundException {
    if (LAG)
        lagUntilCanceled(signal);
    if (THUMB_WEDGE)
        wedgeUntilCanceled(signal);
    if (THUMB_CRASH)
        System.exit(12);
    final Bitmap bitmap = Bitmap.createBitmap(32, 32, Bitmap.Config.ARGB_8888);
    final Canvas canvas = new Canvas(bitmap);
    final Paint paint = new Paint();
    paint.setColor(Color.BLUE);
    canvas.drawColor(Color.RED);
    canvas.drawLine(0, 0, 32, 32, paint);
    final ByteArrayOutputStream bos = new ByteArrayOutputStream();
    bitmap.compress(CompressFormat.JPEG, 50, bos);
    final ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray());
    try {
        final ParcelFileDescriptor[] fds = ParcelFileDescriptor.createReliablePipe();
        new AsyncTask<Object, Object, Object>() {

            @Override
            protected Object doInBackground(Object... params) {
                final FileOutputStream fos = new FileOutputStream(fds[1].getFileDescriptor());
                try {
                    Streams.copy(bis, fos);
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
                IoUtils.closeQuietly(fds[1]);
                return null;
            }
        }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
        return new AssetFileDescriptor(fds[0], 0, AssetFileDescriptor.UNKNOWN_LENGTH);
    } catch (IOException e) {
        throw new FileNotFoundException(e.getMessage());
    }
}

Example 45 with Canvas

use of android.graphics.Canvas in project platform_frameworks_base by android.

the class UserIconDrawable method rebake.

private void rebake() {
    mInvalidated = false;
    if (mBitmap == null || (mUserDrawable == null && mUserIcon == null)) {
        return;
    }
    final Canvas canvas = new Canvas(mBitmap);
    canvas.drawColor(0, PorterDuff.Mode.CLEAR);
    if (mUserDrawable != null) {
        mUserDrawable.draw(canvas);
    } else if (mUserIcon != null) {
        int saveId = canvas.save();
        canvas.concat(mIconMatrix);
        canvas.drawCircle(mUserIcon.getWidth() * 0.5f, mUserIcon.getHeight() * 0.5f, mIntrinsicRadius, mIconPaint);
        canvas.restoreToCount(saveId);
    }
    if (mFrameColor != null) {
        mFramePaint.setColor(mFrameColor.getColorForState(getState(), Color.TRANSPARENT));
    }
    if ((mFrameWidth + mFramePadding) > 0.001f) {
        float radius = mDisplayRadius - mPadding - mFrameWidth * 0.5f;
        canvas.drawCircle(getBounds().exactCenterX(), getBounds().exactCenterY(), radius, mFramePaint);
    }
    if ((mBadge != null) && (mBadgeRadius > 0.001f)) {
        final float badgeDiameter = mBadgeRadius * 2f;
        final float badgeTop = mBitmap.getHeight() - badgeDiameter;
        float badgeLeft = mBitmap.getWidth() - badgeDiameter;
        mBadge.setBounds((int) badgeLeft, (int) badgeTop, (int) (badgeLeft + badgeDiameter), (int) (badgeTop + badgeDiameter));
        final float borderRadius = mBadge.getBounds().width() * 0.5f + mBadgeMargin;
        canvas.drawCircle(badgeLeft + mBadgeRadius, badgeTop + mBadgeRadius, borderRadius, mClearPaint);
        mBadge.draw(canvas);
    }
}