Example usage for android.graphics Matrix postScale

Introduction

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

Prototype

public boolean postScale(float sx, float sy)

Source Link

Document

Postconcats the matrix with the specified scale.

Usage

From source file:Main.java

public static Drawable resizeImage(Bitmap bitmap, int w, int h) {

    // load the origial Bitmap
    Bitmap BitmapOrg = bitmap;/*w w w. j a  v a  2s.c  o  m*/

    int width = BitmapOrg.getWidth();
    int height = BitmapOrg.getHeight();
    int newWidth = w;
    int newHeight = h;

    // calculate the scale
    float scaleWidth = ((float) newWidth) / width;
    float scaleHeight = ((float) newHeight) / height;

    // create a matrix for the manipulation
    Matrix matrix = new Matrix();
    // resize the Bitmap
    matrix.postScale(scaleWidth, scaleHeight);
    // if you want to rotate the Bitmap
    // matrix.postRotate(45);

    // recreate the new Bitmap
    Bitmap resizedBitmap = Bitmap.createBitmap(BitmapOrg, 0, 0, width, height, matrix, true);

    // make a Drawable from Bitmap to allow to set the Bitmap
    // to the ImageView, ImageButton or what ever
    return new BitmapDrawable(resizedBitmap);

}

From source file:Main.java

public static Bitmap getResizedBitmap(Bitmap bm, int newWidth, int newHeight) {
    int width = bm.getWidth();
    int height = bm.getHeight();
    float scaleWidth = ((float) newWidth) / width;
    float scaleHeight = ((float) newHeight) / height;

    if (scaleWidth < scaleHeight) {
        scaleHeight = scaleWidth;/*  w w w  . j a v  a2  s.  c  o  m*/
    } else {
        scaleWidth = scaleHeight;
    }

    // create a matrix for the manipulation
    Matrix matrix = new Matrix();
    // resize the bit map
    matrix.postScale(scaleWidth, scaleHeight);

    // "recreate" the new bitmap
    return Bitmap.createBitmap(bm, 0, 0, width, height, matrix, false);
}

From source file:Main.java

public static Bitmap getResizedBitmap(Bitmap bm, int newHeight, int newWidth) {
    int width = bm.getWidth();
    int height = bm.getHeight();
    float scaleWidth = ((float) newWidth) / width;
    float scaleHeight = ((float) newHeight) / height;
    // CREATE A MATRIX FOR THE MANIPULATION
    Matrix matrix = new Matrix();
    // RESIZE THE BIT MAP
    matrix.postScale(scaleWidth, scaleHeight);

    // "RECREATE" THE NEW BITMAP
    Bitmap resizedBitmap = Bitmap.createBitmap(bm, 0, 0, width, height, matrix, false);

    return resizedBitmap;
}

From source file:Main.java

public static Bitmap scaleWithRatio(Context c, int res, int max) {
    Bitmap bmp = imageResourceToBitmap(c, res, max);

    int width = bmp.getWidth();
    int height = bmp.getHeight();

    // calculate the scale - in this case = 0.4f
    float scaleHeight = ((float) max) / height;
    float scaleWidth = ((float) max) / width;

    // createa matrix for the manipulation
    Matrix matrix = new Matrix();
    // resize the bit map
    matrix.postScale(scaleWidth, scaleHeight);

    // recreate the new Bitmap and return it
    return Bitmap.createBitmap(bmp, 0, 0, width, height, matrix, true);
}

From source file:Main.java

/** simply resizes a given drawable resource to the given width and height */
public static Drawable resizeImage(Context ctx, int resId, int iconWidth, int iconHeight) {

    // load the origial Bitmap
    Bitmap BitmapOrg = BitmapFactory.decodeResource(ctx.getResources(), resId);

    int width = BitmapOrg.getWidth();
    int height = BitmapOrg.getHeight();
    int newWidth = iconWidth;
    int newHeight = iconHeight;

    // calculate the scale
    float scaleWidth = ((float) newWidth) / width;
    float scaleHeight = ((float) newHeight) / height;

    // create a matrix for the manipulation
    Matrix matrix = new Matrix();
    // resize the Bitmap
    matrix.postScale(scaleWidth, scaleHeight);

    // if you want to rotate the Bitmap
    // matrix.postRotate(45);

    // recreate the new Bitmap
    Bitmap resizedBitmap = Bitmap.createBitmap(BitmapOrg, 0, 0, width, height, matrix, true);

    // make a Drawable from Bitmap to allow to set the Bitmap
    // to the ImageView, ImageButton or what ever
    return new BitmapDrawable(resizedBitmap);

}

From source file:Main.java

public static Drawable resizeImage(Bitmap bitmap, int newWidth, int newHeight) {

    Bitmap BitmapOrg = bitmap;//from   www .j  a  v  a 2  s .c om
    int width = BitmapOrg.getWidth();
    int height = BitmapOrg.getHeight();

    // calculate the scale
    float scaleWidth = ((float) newWidth) / width;
    float scaleHeight = ((float) newHeight) / height;

    // create a matrix for the manipulation
    Matrix matrix = new Matrix();
    // resize the Bitmap
    matrix.postScale(scaleWidth, scaleHeight);
    // if you want to rotate the Bitmap
    // matrix.postRotate(45);

    // recreate the new Bitmap
    Bitmap resizedBitmap = Bitmap.createBitmap(BitmapOrg, 0, 0, width, height, matrix, true);

    // make a Drawable from Bitmap to allow to set the Bitmap
    // to the ImageView, ImageButton or what ever
    return new BitmapDrawable(resizedBitmap);
}

From source file:Main.java

public static Bitmap getResizedBitmap(Bitmap src, int targetWidth, int targetHeight, float degrees) {
    int srcWidth = src.getWidth();
    int srcHeight = src.getHeight();

    float scale = getFitScale(targetWidth, targetHeight, srcWidth, srcHeight);

    Matrix matrix = new Matrix();
    matrix.postScale(scale, scale);
    matrix.postRotate(degrees);/*www .jav a  2 s  .c  o  m*/

    return Bitmap.createBitmap(src, 0, 0, srcWidth, srcHeight, matrix, true);
}

From source file:Main.java

public static Bitmap zoom(Bitmap source, float wf, float hf) {
    Matrix matrix = new Matrix();
    float sx = wf / source.getWidth();
    float sy = hf / source.getHeight();
    matrix.postScale(sx, sy);
    return Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), matrix, true);
}

From source file:Main.java

public static Bitmap zoomBitmap(Bitmap bitmap, float scale) {
    if (bitmap == null) {
        return null;
    }/*from   w w w .jav  a2  s .c  o  m*/
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    Matrix matrix = new Matrix();
    matrix.postScale(scale, scale);
    Bitmap result = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true);
    return result;
}

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);
    Bitmap zoomBitmap = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true);
    return zoomBitmap;
}