Example usage for android.graphics Matrix MSCALE

Introduction

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

Prototype

int MSCALE_X

To view the source code for android.graphics Matrix MSCALE_X.

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Usage

From source file:com.github.colorchief.colorchief.MainActivity.java

private int[] clickImagePixelLocation(int x, int y, ImageView imageView) {
    int[] pixelLocation = new int[2];

    //ImageView imageViewer = (ImageView) findViewById(R.id.imageView);
    //Bitmap bitmap = null;
    //Drawable displayedDrawable = null;

    int bitmapWidth;
    int bitmapHeight;

    try {//from w w  w .j  a va  2  s.c o  m
        //bitmap = ((BitmapDrawable) imageView.getDrawable()).getBitmap();
        bitmapWidth = bitmapScaledOriginal.getWidth();
        bitmapHeight = bitmapScaledOriginal.getHeight();
    } catch (NullPointerException npe) {
        Log.e(TAG,
                "Failed to extract Bitmap from ImageView or " + "access width and height parameters: " + npe);
        pixelLocation[0] = pixelLocation[1] = 0;
        return pixelLocation;
    }

    float[] imageMatrixValues = new float[9];
    imageView.getImageMatrix().getValues(imageMatrixValues);
    float scaleX = imageMatrixValues[Matrix.MSCALE_X];
    float scaleY = imageMatrixValues[Matrix.MSCALE_Y];

    int[] imageViewerLoc = new int[2];
    imageView.getLocationOnScreen(imageViewerLoc);

    //assuming Bitmap is centred in imageViewer
    int xOffsetBitmap2imageViewer = (imageView.getWidth() - Math.round(bitmapWidth * scaleX)) / 2;
    int yOffsetBitmap2imageViewer = (imageView.getHeight() - Math.round(bitmapHeight * scaleY)) / 2;

    // get total bitmap offset vs. screen origin
    int xTotalOffset = imageViewerLoc[0] + xOffsetBitmap2imageViewer;
    int yTotalOffset = imageViewerLoc[1] + yOffsetBitmap2imageViewer;

    int xLocationScaledBitmap = x - xTotalOffset;
    int yLocationScaledBitmap = y - yTotalOffset;

    pixelLocation[0] = Math.round(xLocationScaledBitmap / scaleX);
    pixelLocation[1] = Math.round(yLocationScaledBitmap / scaleY);

    Log.d(TAG, "Pixel location x,y = " + Integer.toString(pixelLocation[0]) + ", "
            + Integer.toString(pixelLocation[1]));

    if (pixelLocation[0] < 0)
        pixelLocation[0] = 0;
    if (pixelLocation[0] > (bitmapWidth - 1))
        pixelLocation[0] = (bitmapWidth - 1);

    if (pixelLocation[1] < 0)
        pixelLocation[1] = 0;
    if (pixelLocation[1] > (bitmapHeight - 1))
        pixelLocation[1] = (bitmapHeight - 1);

    return pixelLocation;
}

From source file:com.jsibbold.zoomage.ZoomageView.java

@Override
public boolean onScaleBegin(ScaleGestureDetector detector) {
    startScale = mValues[Matrix.MSCALE_X];
    return true;
}

From source file:com.android.volley.ui.PhotoView.java

/**
 * Returns the currently applied scale factor for the image.
 * <p>/*from  w w w  .j  av  a  2s . c o m*/
 * NOTE: This method overwrites any values stored in {@link #mValues}.
 */
private float getScale() {
    return (float) Math.sqrt((float) Math.pow(getValue(mMatrix, Matrix.MSCALE_X), 2)
            + (float) Math.pow(getValue(mMatrix, Matrix.MSKEW_Y), 2));
}

From source file:com.androidex.volley.ui.PhotoView.java

/**
 * Returns the currently applied scale factor for the image.
 * <p>/*from  w w w.  j  a  v a2 s.com*/
 * NOTE: This method overwrites any values stored in {@link #mValues}.
 */
private float getScale() {
    return FloatMath.sqrt((float) Math.pow(getValue(mMatrix, Matrix.MSCALE_X), 2)
            + (float) Math.pow(getValue(mMatrix, Matrix.MSKEW_Y), 2));
}

From source file:cl.monsoon.s1next.widget.PhotoView.java

/**
 * Returns the currently applied scale factor for the image.
 * <p>//from  www .j a  v  a2  s.  co  m
 * NOTE: This method overwrites any values stored in {@link #mValues}.
 */
private float getScale() {
    mMatrix.getValues(mValues);
    return mValues[Matrix.MSCALE_X];
}

Example usage for android.graphics Matrix MSCALE_X

Introduction

Prototype

Usage