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

Example 1 with Matrix

use of android.graphics.Matrix in project TakePhoto by crazycodeboy.

the class ImageRotateUtil method rotateBitmapByDegree.

/**
     * 将图片按照某个角度进行旋转
     *
     * @param bm     需要旋转的图片
     * @param degree 旋转角度
     * @return 旋转后的图片
     */
private Bitmap rotateBitmapByDegree(Bitmap bm, int degree) {
    Bitmap returnBm = null;
    // 根据旋转角度，生成旋转矩阵
    Matrix matrix = new Matrix();
    matrix.postRotate(degree);
    try {
        // 将原始图片按照旋转矩阵进行旋转，并得到新的图片
        returnBm = Bitmap.createBitmap(bm, 0, 0, bm.getWidth(), bm.getHeight(), matrix, true);
    } catch (OutOfMemoryError e) {
    }
    if (returnBm == null) {
        returnBm = bm;
    }
    if (bm != returnBm) {
        bm.recycle();
    }
    return returnBm;
}

Example 2 with Matrix

use of android.graphics.Matrix in project cw-omnibus by commonsguy.

the class AnimatorProxy method computeRect.

private void computeRect(final RectF r, View view) {
    // compute current rectangle according to matrix transformation
    final float w = view.getWidth();
    final float h = view.getHeight();
    // use a rectangle at 0,0 to make sure we don't run into issues with scaling
    r.set(0, 0, w, h);
    final Matrix m = mTempMatrix;
    m.reset();
    transformMatrix(m, view);
    mTempMatrix.mapRect(r);
    r.offset(view.getLeft(), view.getTop());
    // Straighten coords if rotations flipped them
    if (r.right < r.left) {
        final float f = r.right;
        r.right = r.left;
        r.left = f;
    }
    if (r.bottom < r.top) {
        final float f = r.top;
        r.top = r.bottom;
        r.bottom = f;
    }
}

Example 3 with Matrix

use of android.graphics.Matrix in project AndroidTraining by mixi-inc.

the class AnimatorProxy method computeRect.

private void computeRect(final RectF r, View view) {
    // compute current rectangle according to matrix transformation
    final float w = view.getWidth();
    final float h = view.getHeight();
    // use a rectangle at 0,0 to make sure we don't run into issues with scaling
    r.set(0, 0, w, h);
    final Matrix m = mTempMatrix;
    m.reset();
    transformMatrix(m, view);
    mTempMatrix.mapRect(r);
    r.offset(view.getLeft(), view.getTop());
    // Straighten coords if rotations flipped them
    if (r.right < r.left) {
        final float f = r.right;
        r.right = r.left;
        r.left = f;
    }
    if (r.bottom < r.top) {
        final float f = r.top;
        r.top = r.bottom;
        r.bottom = f;
    }
}

Example 4 with Matrix

use of android.graphics.Matrix in project rainbow by juankysoriano.

the class CaptureSketchUtils method storeThumbnail.

/**
     * A copy of the Android internals StoreThumbnail method, it used with the insertImage to
     * populate the android.provider.MediaStore.Images.Media#insertImage with all the correct
     * meta data. The StoreThumbnail method is private so it must be duplicated here.
     *
     * @see android.provider.MediaStore.Images.Media (StoreThumbnail private method)
     */
private static Bitmap storeThumbnail(ContentResolver cr, Bitmap source, long id, float width, float height, int kind) {
    // create the matrix to scale it
    Matrix matrix = new Matrix();
    float scaleX = width / source.getWidth();
    float scaleY = height / source.getHeight();
    matrix.setScale(scaleX, scaleY);
    Bitmap thumb = Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), matrix, true);
    ContentValues values = new ContentValues(4);
    values.put(Images.Thumbnails.KIND, kind);
    values.put(Images.Thumbnails.IMAGE_ID, (int) id);
    values.put(Images.Thumbnails.HEIGHT, thumb.getHeight());
    values.put(Images.Thumbnails.WIDTH, thumb.getWidth());
    Uri url = cr.insert(Images.Thumbnails.EXTERNAL_CONTENT_URI, values);
    try {
        OutputStream thumbOut = cr.openOutputStream(url);
        thumb.compress(Bitmap.CompressFormat.JPEG, 100, thumbOut);
        thumbOut.close();
        return thumb;
    } catch (FileNotFoundException ex) {
        return null;
    } catch (IOException ex) {
        return null;
    }
}

Example 5 with Matrix

use of android.graphics.Matrix in project qksms by moezbhatti.

the class ComposeView method rotateImage.

public static Bitmap rotateImage(Bitmap source, float angle) {
    Matrix matrix = new Matrix();
    matrix.postRotate(angle);
    return Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), matrix, true);
}