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

Example 36 with Canvas

use of android.graphics.Canvas in project glide by bumptech.

the class TransformationUtils method applyMatrix.

private static void applyMatrix(@NonNull Bitmap inBitmap, @NonNull Bitmap targetBitmap, Matrix matrix) {
    BITMAP_DRAWABLE_LOCK.lock();
    try {
        Canvas canvas = new Canvas(targetBitmap);
        canvas.drawBitmap(inBitmap, matrix, DEFAULT_PAINT);
        clear(canvas);
    } finally {
        BITMAP_DRAWABLE_LOCK.unlock();
    }
}

Example 37 with Canvas

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

the class TextViewPerformanceTest method setUp.

@Override
protected void setUp() throws Exception {
    super.setUp();
    Bitmap mBitmap = Bitmap.createBitmap(320, 240, Bitmap.Config.RGB_565);
    mCanvas = new Canvas(mBitmap);
    ViewGroup.LayoutParams p = new ViewGroup.LayoutParams(320, 240);
    mLabelView = new PerformanceLabelView(mContext);
    mLabelView.setText(mString);
    mLabelView.measure(View.MeasureSpec.AT_MOST | 320, View.MeasureSpec.AT_MOST | 240);
    mLabelView.mySetFrame(320, 240);
    mLabelView.setLayoutParams(p);
    mLabelView.myDraw(mCanvas);
    mPaint = new Paint();
    mCanvas.save();
    mTextView = new PerformanceTextView(mContext);
    mTextView.setLayoutParams(p);
    mTextView.setText(mString);
    mTextView.mySetFrame(320, 240);
    mTextView.measure(View.MeasureSpec.AT_MOST | 320, View.MeasureSpec.AT_MOST | 240);
}

Example 38 with Canvas

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

the class IconTest method testWithBitmap.

@SmallTest
public void testWithBitmap() throws Exception {
    final Bitmap bm1 = Bitmap.createBitmap(100, 200, Bitmap.Config.ARGB_8888);
    final Bitmap bm2 = Bitmap.createBitmap(100, 200, Bitmap.Config.RGB_565);
    final Bitmap bm3 = ((BitmapDrawable) getContext().getDrawable(R.drawable.landscape)).getBitmap();
    final Canvas can1 = new Canvas(bm1);
    can1.drawColor(0xFFFF0000);
    final Canvas can2 = new Canvas(bm2);
    can2.drawColor(0xFF00FF00);
    final Icon im1 = Icon.createWithBitmap(bm1);
    final Icon im2 = Icon.createWithBitmap(bm2);
    final Icon im3 = Icon.createWithBitmap(bm3);
    final Drawable draw1 = im1.loadDrawable(mContext);
    final Drawable draw2 = im2.loadDrawable(mContext);
    final Drawable draw3 = im3.loadDrawable(mContext);
    final Bitmap test1 = Bitmap.createBitmap(draw1.getIntrinsicWidth(), draw1.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
    final Bitmap test2 = Bitmap.createBitmap(draw2.getIntrinsicWidth(), draw2.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
    final Bitmap test3 = Bitmap.createBitmap(draw3.getIntrinsicWidth(), draw3.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
    draw1.setBounds(0, 0, draw1.getIntrinsicWidth(), draw1.getIntrinsicHeight());
    draw1.draw(new Canvas(test1));
    draw2.setBounds(0, 0, draw2.getIntrinsicWidth(), draw2.getIntrinsicHeight());
    draw2.draw(new Canvas(test2));
    draw3.setBounds(0, 0, draw3.getIntrinsicWidth(), draw3.getIntrinsicHeight());
    draw3.draw(new Canvas(test3));
    final File dir = getContext().getExternalFilesDir(null);
    L("writing temp bitmaps to %s...", dir);
    bm1.compress(Bitmap.CompressFormat.PNG, 100, new FileOutputStream(new File(dir, "bitmap1-original.png")));
    test1.compress(Bitmap.CompressFormat.PNG, 100, new FileOutputStream(new File(dir, "bitmap1-test.png")));
    if (!equalBitmaps(bm1, test1)) {
        findBitmapDifferences(bm1, test1);
        fail("bitmap1 differs, check " + dir);
    }
    bm2.compress(Bitmap.CompressFormat.PNG, 100, new FileOutputStream(new File(dir, "bitmap2-original.png")));
    test2.compress(Bitmap.CompressFormat.PNG, 100, new FileOutputStream(new File(dir, "bitmap2-test.png")));
    if (!equalBitmaps(bm2, test2)) {
        findBitmapDifferences(bm2, test2);
        fail("bitmap2 differs, check " + dir);
    }
    bm3.compress(Bitmap.CompressFormat.PNG, 100, new FileOutputStream(new File(dir, "bitmap3-original.png")));
    test3.compress(Bitmap.CompressFormat.PNG, 100, new FileOutputStream(new File(dir, "bitmap3-test.png")));
    if (!equalBitmaps(bm3, test3)) {
        findBitmapDifferences(bm3, test3);
        fail("bitmap3 differs, check " + dir);
    }
}

Example 39 with Canvas

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

the class IconTest method testWithBitmapResource.

@SmallTest
public void testWithBitmapResource() throws Exception {
    final Bitmap res1 = ((BitmapDrawable) getContext().getDrawable(R.drawable.landscape)).getBitmap();
    final Icon im1 = Icon.createWithResource(getContext(), R.drawable.landscape);
    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));
    final File dir = getContext().getExternalFilesDir(null);
    res1.compress(Bitmap.CompressFormat.PNG, 100, new FileOutputStream(new File(dir, "res1-original.png")));
    test1.compress(Bitmap.CompressFormat.PNG, 100, new FileOutputStream(new File(dir, "res1-test.png")));
    if (!equalBitmaps(res1, test1)) {
        findBitmapDifferences(res1, test1);
        fail("res1 differs, check " + dir);
    }
}

Example 40 with Canvas

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

the class IconTest method testParcel.

@SmallTest
public void testParcel() throws Exception {
    final Bitmap originalbits = ((BitmapDrawable) getContext().getDrawable(R.drawable.landscape)).getBitmap();
    final ByteArrayOutputStream ostream = new ByteArrayOutputStream(// guess 50% compression
    originalbits.getWidth() * originalbits.getHeight() * 2);
    originalbits.compress(Bitmap.CompressFormat.PNG, 100, ostream);
    final byte[] pngdata = ostream.toByteArray();
    L("starting testParcel; bitmap: %d bytes, PNG: %d bytes", originalbits.getByteCount(), pngdata.length);
    final File dir = getContext().getExternalFilesDir(null);
    final File originalfile = new File(dir, "parcel-original.png");
    new FileOutputStream(originalfile).write(pngdata);
    ArrayList<Icon> imgs = new ArrayList<>();
    final Icon file1 = Icon.createWithFilePath(originalfile.getAbsolutePath());
    imgs.add(file1);
    final Icon bit1 = Icon.createWithBitmap(originalbits);
    imgs.add(bit1);
    final Icon data1 = Icon.createWithData(pngdata, 0, pngdata.length);
    imgs.add(data1);
    final Icon res1 = Icon.createWithResource(getContext(), R.drawable.landscape);
    imgs.add(res1);
    ArrayList<Icon> test = new ArrayList<>();
    final Parcel parcel = Parcel.obtain();
    int pos = 0;
    parcel.writeInt(imgs.size());
    for (Icon img : imgs) {
        img.writeToParcel(parcel, 0);
        L("used %d bytes parceling: %s", parcel.dataPosition() - pos, img);
        pos = parcel.dataPosition();
    }
    // rewind
    parcel.setDataPosition(0);
    final int N = parcel.readInt();
    for (int i = 0; i < N; i++) {
        Icon img = Icon.CREATOR.createFromParcel(parcel);
        L("test %d: read from parcel: %s", i, img);
        final File testfile = new File(dir, String.format("parcel-test%02d.png", i));
        final Drawable draw1 = img.loadDrawable(mContext);
        if (draw1 == null) {
            fail("null drawable from img: " + img);
        }
        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(testfile));
        } catch (java.io.FileNotFoundException ex) {
            fail("couldn't create test file " + testfile + ": " + ex);
        }
        if (!equalBitmaps(originalbits, test1)) {
            findBitmapDifferences(originalbits, test1);
            fail(testfile + " differs from original: " + originalfile);
        }
    }
}