// According to the event's position, change the focus to the first
// hitting cropping rectangle.
private void recomputeFocus(MotionEvent event) {
for (int i = 0; i < mHighlightViews.size(); i++) {
HighlightView hv = mHighlightViews.get(i);
hv.setFocus(false);
hv.invalidate();
}
for (int i = 0; i < mHighlightViews.size(); i++) {
HighlightView hv = mHighlightViews.get(i);
int edge = hv.getHit(event.getX(), event.getY());
if (edge != HighlightView.GROW_NONE) {
if (!hv.hasFocus()) {
hv.setFocus(true);
hv.invalidate();
}
break;
}
}
invalidate();
}
@Override
public boolean onTouchEvent(MotionEvent event) {
CropImage cropImage = (CropImage) mContext;
if (cropImage.mSaving) {
return false;
}
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
if (cropImage.mWaitingToPick) {
recomputeFocus(event);
} else {
for (int i = 0; i < mHighlightViews.size(); i++) {
HighlightView hv = mHighlightViews.get(i);
int edge = hv.getHit(event.getX(), event.getY());
if (edge != HighlightView.GROW_NONE) {
mMotionEdge = edge;
mMotionHighlightView = hv;
mLastX = event.getX();
mLastY = event.getY();
mMotionHighlightView.setMode(
(edge == HighlightView.MOVE)
? HighlightView.ModifyMode.Move
: HighlightView.ModifyMode.Grow);
break;
}
}
}
break;
case MotionEvent.ACTION_UP:
if (cropImage.mWaitingToPick) {
for (int i = 0; i < mHighlightViews.size(); i++) {
HighlightView hv = mHighlightViews.get(i);
if (hv.hasFocus()) {
cropImage.mCrop = hv;
for (int j = 0; j < mHighlightViews.size(); j++) {
if (j == i) {
continue;
}
mHighlightViews.get(j).setHidden(true);
}
centerBasedOnHighlightView(hv);
((CropImage) mContext).mWaitingToPick = false;
return true;
}
}
} else if (mMotionHighlightView != null) {
centerBasedOnHighlightView(mMotionHighlightView);
mMotionHighlightView.setMode(HighlightView.ModifyMode.None);
}
mMotionHighlightView = null;
break;
case MotionEvent.ACTION_MOVE:
if (cropImage.mWaitingToPick) {
recomputeFocus(event);
} else if (mMotionHighlightView != null) {
mMotionHighlightView.handleMotion(
mMotionEdge, event.getX() - mLastX, event.getY() - mLastY);
mLastX = event.getX();
mLastY = event.getY();
if (true) {
// This section of code is optional. It has some user
// benefit in that moving the crop rectangle against
// the edge of the screen causes scrolling but it means
// that the crop rectangle is no longer fixed under
// the user's finger.
ensureVisible(mMotionHighlightView);
}
}
break;
}
switch (event.getAction()) {
case MotionEvent.ACTION_UP:
center(true, true);
break;
case MotionEvent.ACTION_MOVE:
// if we're not zoomed then there's no point in even allowing
// the user to move the image around. This call to center puts
// it back to the normalized location (with false meaning don't
// animate).
if (getScale() == 1F) {
center(true, true);
}
break;
}
return true;
}