@Override
protected void onZoom(float scale) {
super.onZoom(scale);
if (mScaleDetector != null) {
if (!mScaleDetector.isInProgress()) mCurrentScaleFactor = scale;
}
}
@Override
protected void onBitmapChanged(Drawable drawable) {
super.onBitmapChanged(drawable);
float v[] = new float[9];
mSuppMatrix.getValues(v);
mCurrentScaleFactor = v[Matrix.MSCALE_X];
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
measureRect();
if (mDragHandlerPaint == null) {
return;
}
if (mMarginPaint == null) {
return;
}
if (INNER_RECT) {
canvas.save();
canvas.drawLine(
mBitmapRectPoints[0],
mBitmapRectPoints[1],
mBitmapRectPoints[2],
mBitmapRectPoints[3],
mMarginPaint);
canvas.drawLine(
mBitmapRectPoints[4],
mBitmapRectPoints[5],
mBitmapRectPoints[6],
mBitmapRectPoints[7],
mMarginPaint);
canvas.drawLine(
mBitmapRectPoints[0],
mBitmapRectPoints[1],
mBitmapRectPoints[4],
mBitmapRectPoints[5],
mMarginPaint);
canvas.drawLine(
mBitmapRectPoints[2],
mBitmapRectPoints[3],
mBitmapRectPoints[6],
mBitmapRectPoints[7],
mMarginPaint);
canvas.drawCircle(mBitmapRectPoints[0], mBitmapRectPoints[1], mRadius, mDragHandlerPaint);
canvas.drawCircle(mBitmapRectPoints[2], mBitmapRectPoints[3], mRadius, mDragHandlerPaint);
canvas.drawCircle(mBitmapRectPoints[4], mBitmapRectPoints[5], mRadius, mDragHandlerPaint);
canvas.drawCircle(mBitmapRectPoints[6], mBitmapRectPoints[7], mRadius, mDragHandlerPaint);
canvas.restore();
} else {
canvas.save();
canvas.drawRect(mMarginRectF, mMarginPaint);
canvas.drawCircle(mMarginRectF.left, mMarginRectF.top, mRadius, mDragHandlerPaint);
canvas.drawCircle(mMarginRectF.right, mMarginRectF.top, mRadius, mDragHandlerPaint);
canvas.drawCircle(mMarginRectF.left, mMarginRectF.bottom, mRadius, mDragHandlerPaint);
canvas.drawCircle(mMarginRectF.right, mMarginRectF.bottom, mRadius, mDragHandlerPaint);
canvas.restore();
}
if (!(mDragPoint.x == INVALID_POINT && mDragPoint.y == INVALID_POINT)) {
canvas.save();
canvas.drawCircle(mMarginRectF.centerX(), mMarginRectF.centerY(), mRadius, mDragHandlerPaint);
canvas.restore();
}
}
@Override
protected void _setImageDrawable(
final Drawable drawable,
final boolean reset,
final Matrix initial_matrix,
final float maxZoom) {
super._setImageDrawable(drawable, reset, initial_matrix, maxZoom);
mScaleFactor = getMaxZoom() / 3;
}
@Override
protected void init() {
super.init();
mTouchSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop();
mGestureListener = getGestureListener();
mScaleListener = getScaleListener();
if (mScaleListener != null) {
mScaleDetector = new ScaleGestureDetector(getContext(), mScaleListener);
}
try {
mGestureDetector = new GestureDetector(getContext(), mGestureListener, null, true);
} catch (Throwable e) {
}
mCurrentScaleFactor = 1f;
mDoubleTapDirection = 1;
mRadius = Utils.dip2px(getContext(), RADIUS);
}