Example usage for android.graphics Matrix Matrix

Introduction

In this page you can find the example usage for android.graphics Matrix Matrix.

Prototype

public Matrix()

Source Link

Document

Create an identity matrix

Usage

From source file:Main.java

private static Bitmap rotateBitmap(Bitmap bitmap, int rotate) {
    if (bitmap == null) {
        return null;
    }/*from ww w.  jav  a 2s .c om*/
    int w = bitmap.getWidth();
    int h = bitmap.getHeight();

    Matrix mtx = new Matrix();
    mtx.postRotate(rotate);
    return Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true);
}

From source file:Main.java

public static Bitmap zoomBitmap(Bitmap bitmap, int w, int h) {
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    Matrix matrix = new Matrix();
    float x = (float) w / width;
    float y = (float) h / height;
    matrix.postScale(x, y);//from  www  . ja v  a2  s.c  om
    Bitmap zoomBitmap = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true);
    return zoomBitmap;
}

From source file:Main.java

public static WeakReference<Bitmap> rotateBitmap(WeakReference<Bitmap> bitmap, int degress) {
    if (bitmap == null || bitmap.get() == null)
        return null;
    Matrix m = new Matrix();
    m.postRotate(degress);/*from   w w  w.java2s .co m*/
    return new WeakReference<Bitmap>(Bitmap.createBitmap(bitmap.get(), 0, 0, bitmap.get().getWidth(),
            bitmap.get().getHeight(), m, true));
}

From source file:Main.java

/**
 * @return matrix with correct configuration for the front camera.
 * Function to set correct height orientation and rotation for saving the image
 * in sd card.//from   w  ww  .j a v a  2s .  c om
 */
public static Matrix setOrientationForFrontCamera() {
    Matrix matrix = new Matrix();
    matrix.postRotate(-90);
    //for mirror images
    float[] mirrorY = { -1, 0, 0, 0, 1, 0, 0, 0, 1 };
    Matrix matrixMirrorY = new Matrix();
    matrixMirrorY.setValues(mirrorY);
    matrix.postConcat(matrixMirrorY);
    return matrix;
}

From source file:Main.java

/**
 * Method using rotate photo.//w w  w  . ja  va 2 s.co  m
 *
 * @param bitmap Value bitmap current.
 * @param angle  Value angle.
 * @return Bitmap.
 */
private static Bitmap rotateImage(Bitmap bitmap, float angle) {
    Matrix matrix = new Matrix();
    matrix.postRotate(angle);

    return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}

From source file:Main.java

public static Bitmap zoomBitmap(Bitmap bitmap, int w, int h) {
    Bitmap newbmp = null;//from  w  w  w .  ja va  2s  .co m
    if (bitmap != null) {
        int width = bitmap.getWidth();
        int height = bitmap.getHeight();
        Matrix matrix = new Matrix();
        float scaleWidht = ((float) w / width);
        float scaleHeight = ((float) h / height);
        matrix.postScale(scaleWidht, scaleHeight);
        newbmp = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true);
    }
    return newbmp;
}

From source file:Main.java

public static Bitmap adjustPhotoRotation(Bitmap bm, final int orientationDegree) {

    Matrix m = new Matrix();
    m.setRotate(orientationDegree, (float) bm.getWidth() / 2, (float) bm.getHeight() / 2);
    float targetX, targetY;
    if (orientationDegree == 90) {
        targetX = bm.getHeight();/*w ww  .j  av  a2s . c  om*/
        targetY = 0;
    } else {
        targetX = bm.getHeight();
        targetY = bm.getWidth();
    }

    final float[] values = new float[9];
    m.getValues(values);

    float x1 = values[Matrix.MTRANS_X];
    float y1 = values[Matrix.MTRANS_Y];

    m.postTranslate(targetX - x1, targetY - y1);

    Bitmap bm1 = Bitmap.createBitmap(bm.getHeight(), bm.getWidth(), Bitmap.Config.ARGB_8888);
    Paint paint = new Paint();
    Canvas canvas = new Canvas(bm1);
    canvas.drawBitmap(bm, m, paint);

    return bm1;
}

From source file:Main.java

/**
 * Method to flip vertically a Bitmap./*from w ww  .j a  v a2s.co m*/
 *
 * @param source The original Bitmap.
 * @return The flipped Bitmap.
 */
public static Bitmap flipVertically(Bitmap source) {
    Matrix m = new Matrix();
    m.preScale(1, -1);
    return Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), m, false);
}

From source file:Main.java

public static Bitmap rotateBitmap(Bitmap bitmap, int rotate) {
    if (bitmap == null)
        return null;

    int w = bitmap.getWidth();
    int h = bitmap.getHeight();

    // Setting post rotate to 90
    Matrix mtx = new Matrix();
    mtx.postRotate(rotate);/*from w ww  .ja va  2s.  c o m*/
    return Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true);
}

From source file:Main.java

private static Bitmap rotateBitmap(Bitmap bitmap, int rotate) {
    if (bitmap == null)
        return null;

    int w = bitmap.getWidth();
    int h = bitmap.getHeight();

    // Setting post rotate to 90  
    Matrix mtx = new Matrix();
    mtx.postRotate(rotate);/*  w w w . ja va 2  s  .  c  o  m*/
    return Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true);
}