@Override
protected void onZoom(float scale) {
super.onZoom(scale);
if (mScaleDetector != null) {
if (!mScaleDetector.isInProgress()) mCurrentScaleFactor = scale;
}
}
@Override
public boolean onTouchEvent(@NonNull MotionEvent ev) {
stopAnimationsOnTouch = true;
mScaleDetector.onTouchEvent(ev);
if (!mScaleDetector.isInProgress()) mGestureDetector.onTouchEvent(ev);
return true;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
mScaleDetector.onTouchEvent(event);
if (!mScaleDetector.isInProgress()) mGestureDetector.onTouchEvent(event);
int action = event.getAction();
switch (action & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_UP:
if (getScale() < 1f) {
zoomTo(1f, 50);
}
break;
}
return true;
}
@Override
public boolean isScaling() {
return mDetector.isInProgress();
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (mScaleDetector != null) {
mScaleDetector.onTouchEvent(event);
if (!mScaleDetector.isInProgress()) {
if (mGestureDetector != null) {
mGestureDetector.onTouchEvent(event);
}
}
}
float x = event.getX();
float y = event.getY();
int action = event.getAction();
switch (action & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN:
if (INNER_RECT) {
if (circleContain(x, y, mBitmapRectPoints[0], mBitmapRectPoints[1], mRadius, mRadius)) {
mDragPoint.set(mBitmapRectPoints[0], mBitmapRectPoints[1]);
} else if (circleContain(
x, y, mBitmapRectPoints[2], mBitmapRectPoints[3], mRadius, mRadius)) {
mDragPoint.set(mBitmapRectPoints[2], mBitmapRectPoints[3]);
} else if (circleContain(
x, y, mBitmapRectPoints[4], mBitmapRectPoints[5], mRadius, mRadius)) {
mDragPoint.set(mBitmapRectPoints[4], mBitmapRectPoints[5]);
} else if (circleContain(
x, y, mBitmapRectPoints[6], mBitmapRectPoints[7], mRadius, mRadius)) {
mDragPoint.set(mBitmapRectPoints[6], mBitmapRectPoints[7]);
} else {
break;
}
} else {
if (circleContain(x, y, mMarginRectF.left, mMarginRectF.top, mRadius, mRadius)) {
mDragPoint.set(mMarginRectF.left, mMarginRectF.top);
} else if (circleContain(x, y, mMarginRectF.right, mMarginRectF.top, mRadius, mRadius)) {
mDragPoint.set(mMarginRectF.right, mMarginRectF.top);
} else if (circleContain(
x, y, mMarginRectF.left, mMarginRectF.bottom, mRadius, mRadius)) {
mDragPoint.set(mMarginRectF.left, mMarginRectF.bottom);
} else if (circleContain(
x, y, mMarginRectF.right, mMarginRectF.bottom, mRadius, mRadius)) {
mDragPoint.set(mMarginRectF.right, mMarginRectF.bottom);
} else {
break;
}
}
postInvalidate();
break;
case MotionEvent.ACTION_MOVE:
if (mDragPoint.x == INVALID_POINT && mDragPoint.y == INVALID_POINT) {
break;
}
float scale = Float.NEGATIVE_INFINITY;
float newSpanX = 0;
float newSpanY = 0;
float oldSpanX = 0;
float oldSpanY = 0;
float scaleX = 0;
float scaleY = 0;
if (INNER_RECT) {
if (circleContain(
mDragPoint.x,
mDragPoint.y,
mMarginRectF.left,
mMarginRectF.top,
mMarginRectF.centerX(),
mMarginRectF.centerY())) {
newSpanX = mMarginRectF.centerX() - x;
newSpanY = mMarginRectF.centerY() - y;
oldSpanX = mMarginRectF.centerX() - mDragPoint.x;
oldSpanY = mMarginRectF.centerY() - mDragPoint.y;
} else if (circleContain(
mDragPoint.x,
mDragPoint.y,
mMarginRectF.left,
mMarginRectF.bottom,
mMarginRectF.centerX(),
mMarginRectF.centerY())) {
newSpanX = mMarginRectF.centerX() - x;
newSpanY = y - mMarginRectF.centerY();
oldSpanX = mMarginRectF.centerX() - mDragPoint.x;
oldSpanY = mDragPoint.y - mMarginRectF.centerY();
} else if (circleContain(
mDragPoint.x,
mDragPoint.y,
mMarginRectF.right,
mMarginRectF.top,
mMarginRectF.centerX(),
mMarginRectF.centerY())) {
newSpanX = x - mMarginRectF.centerX();
newSpanY = mMarginRectF.centerY() - y;
oldSpanX = mDragPoint.x - mMarginRectF.centerX();
oldSpanY = mMarginRectF.centerY() - mDragPoint.y;
} else {
newSpanX = x - mMarginRectF.centerX();
newSpanY = y - mMarginRectF.centerY();
oldSpanX = mDragPoint.x - mMarginRectF.centerX();
oldSpanY = mDragPoint.y - mMarginRectF.centerY();
}
} else {
if (mDragPoint.x == mMarginRectF.left) {
if (mDragPoint.y == mMarginRectF.top) {
newSpanX = mMarginRectF.centerX() - x;
newSpanY = mMarginRectF.centerY() - y;
oldSpanX = mMarginRectF.centerX() - mMarginRectF.left;
oldSpanY = mMarginRectF.centerY() - mMarginRectF.top;
} else {
newSpanX = mMarginRectF.centerX() - x;
newSpanY = y - mMarginRectF.centerY();
oldSpanX = mMarginRectF.centerX() - mMarginRectF.left;
oldSpanY = mMarginRectF.bottom - mMarginRectF.centerY();
}
} else {
if (mDragPoint.y == mMarginRectF.top) {
newSpanX = x - mMarginRectF.centerX();
newSpanY = mMarginRectF.centerY() - y;
oldSpanX = mMarginRectF.right - mMarginRectF.centerX();
oldSpanY = mMarginRectF.centerY() - mMarginRectF.top;
} else {
newSpanX = x - mMarginRectF.centerX();
newSpanY = y - mMarginRectF.centerY();
oldSpanX = mMarginRectF.right - mMarginRectF.centerX();
oldSpanY = mMarginRectF.bottom - mMarginRectF.centerY();
}
}
}
scaleX = newSpanX / oldSpanX;
scaleY = newSpanY / oldSpanY;
scale = Math.max(Math.abs(scaleX), Math.abs(scaleY));
if (INNER_RECT) {
float radius =
computeRadius(
x, y, mDragPoint.x, mDragPoint.y, mMarginRectF.centerX(), mMarginRectF.centerY());
postScaleWithRadius(scale, radius, mMarginRectF.centerX(), mMarginRectF.centerY());
} else {
postScale(scale, mMarginRectF.centerX(), mMarginRectF.centerY());
}
break;
case MotionEvent.ACTION_UP:
if (getScale() < 1f) {
zoomTo(1f, 50);
}
default:
mDragPoint.set(INVALID_POINT, INVALID_POINT);
postInvalidate();
break;
}
return true;
}
boolean isScaleGestureDetectionInProgress() {
return isMultiTouchZoomSupported() && mMultiTouchDetector.isInProgress();
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
// Let the ScaleGestureDetector inspect all events.
mScaleDetector.onTouchEvent(ev);
final int action = ev.getAction();
switch (action & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN:
{
final float x = ev.getX();
final float y = ev.getY();
mLastTouchX = x;
mLastTouchY = y;
mActivePointerId = ev.getPointerId(0);
break;
}
case MotionEvent.ACTION_MOVE:
{
final int pointerIndex = ev.findPointerIndex(mActivePointerId);
final float x = ev.getX(pointerIndex);
final float y = ev.getY(pointerIndex);
// Only move if the ScaleGestureDetector isn't processing a gesture.
if (!mScaleDetector.isInProgress()) {
final float dx = x - mLastTouchX;
final float dy = y - mLastTouchY;
mPosX += dx;
mPosY += dy;
invalidate();
}
mLastTouchX = x;
mLastTouchY = y;
break;
}
case MotionEvent.ACTION_UP:
{
mActivePointerId = INVALID_POINTER_ID;
break;
}
case MotionEvent.ACTION_CANCEL:
{
mActivePointerId = INVALID_POINTER_ID;
break;
}
case MotionEvent.ACTION_POINTER_UP:
{
final int pointerIndex =
(ev.getAction() & MotionEvent.ACTION_POINTER_INDEX_MASK)
>> MotionEvent.ACTION_POINTER_INDEX_SHIFT;
final int pointerId = ev.getPointerId(pointerIndex);
if (pointerId == mActivePointerId) {
// This was our active pointer going up. Choose a new
// active pointer and adjust accordingly.
final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
mLastTouchX = ev.getX(newPointerIndex);
mLastTouchY = ev.getY(newPointerIndex);
mActivePointerId = ev.getPointerId(newPointerIndex);
}
break;
}
}
return true;
}
@Override
public boolean handleTouchEvent(MotionEvent ev, float scaleFactor, int xPos, int yPos) {
mScaleDetector.onTouchEvent(ev);
mGestureDetector.onTouchEvent(ev);
final int action = ev.getAction();
switch (action) {
case MotionEvent.ACTION_DOWN:
{
final float x = ev.getX();
final float y = ev.getY();
// Remember where we started
mLastTouchX = x;
mLastTouchY = y;
mActivePointerId = ev.getPointerId(0);
break;
}
case MotionEvent.ACTION_MOVE:
{
final int pointerIndex = ev.findPointerIndex(mActivePointerId);
if (pointerIndex < 0) return false;
final float x = ev.getX(pointerIndex);
final float y = ev.getY(pointerIndex);
if (!mScaleDetector.isInProgress()) {
// Calculate the distance moved
final float dx = x - mLastTouchX;
final float dy = y - mLastTouchY;
// Move the object
pan(dx, dy, scaleFactor, xPos, yPos);
// Remember this touch position for the next move event
mLastTouchX = x;
mLastTouchY = y;
}
break;
}
case MotionEvent.ACTION_UP:
{
mActivePointerId = INVALID_POINTER_ID;
break;
}
case MotionEvent.ACTION_CANCEL:
{
mActivePointerId = INVALID_POINTER_ID;
break;
}
case MotionEvent.ACTION_POINTER_UP:
{
// Extract the index of the pointer that left the touch sensor
final int pointerIndex =
(action & MotionEvent.ACTION_POINTER_INDEX_MASK)
>> MotionEvent.ACTION_POINTER_INDEX_SHIFT;
final int pointerId = ev.getPointerId(pointerIndex);
if (pointerId == mActivePointerId) {
// This was our active pointer going up. Choose a new
// active pointer and adjust accordingly.
final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
mLastTouchX = ev.getX(newPointerIndex);
mLastTouchY = ev.getY(newPointerIndex);
mActivePointerId = ev.getPointerId(newPointerIndex);
}
break;
}
} // and switch statement
return true;
}
public boolean isScaling() {
return scaleGestureDetector.isInProgress();
}
