private boolean drop(float x, float y) {
invalidate();
final int[] coordinates = mDropCoordinates;
DropTarget dropTarget = findDropTarget((int) x, (int) y, coordinates);
if (mTagPopup != null) {
// don't perform dismiss action when the popup closes
((QuickActionWindow) mTagPopup).setOnDismissListener(null);
}
if (dropTarget != null) {
dropTarget.onDragExit(
mDragSource,
coordinates[0],
coordinates[1],
(int) mTouchOffsetX,
(int) mTouchOffsetY,
mDragInfo);
if (dropTarget.acceptDrop(
mDragSource,
coordinates[0],
coordinates[1],
(int) mTouchOffsetX,
(int) mTouchOffsetY,
mDragInfo)) {
boolean success = false;
if (mTagPopup == null || !(dropTarget instanceof Workspace)) {
mTagPopup = null;
dropTarget.onDrop(
mDragSource,
coordinates[0],
coordinates[1],
(int) mTouchOffsetX,
(int) mTouchOffsetY,
mDragInfo);
success = true;
}
mDragSource.onDropCompleted((View) dropTarget, success);
return true;
} else {
mDragSource.onDropCompleted((View) dropTarget, false);
return true;
}
}
return false;
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
if (!mDragging) {
return false;
}
final int action = ev.getAction();
final float x = ev.getX();
final float y = ev.getY();
switch (action) {
case MotionEvent.ACTION_DOWN:
// Remember where the motion event started
mLastMotionX = x;
mLastMotionY = y;
if ((x < SCROLL_ZONE) || (x > getWidth() - SCROLL_ZONE)) {
mScrollState = SCROLL_WAITING_IN_ZONE;
postDelayed(mScrollRunnable, SCROLL_DELAY);
} else {
mScrollState = SCROLL_OUTSIDE_ZONE;
}
break;
case MotionEvent.ACTION_MOVE:
final int scrollX = mScrollX;
final int scrollY = mScrollY;
final float touchX = mTouchOffsetX;
final float touchY = mTouchOffsetY;
final int offsetX = mBitmapOffsetX;
final int offsetY = mBitmapOffsetY;
int left = (int) (scrollX + mLastMotionX - touchX - offsetX);
int top = (int) (scrollY + mLastMotionY - touchY - offsetY);
int width;
int height;
if (mDrawModeBitmap && mDragBitmap != null) {
final Bitmap dragBitmap = mDragBitmap;
width = dragBitmap.getWidth();
height = dragBitmap.getHeight();
} else {
width = mDrawWidth;
height = mDrawHeight;
}
final Rect rect = mRect;
rect.set(left - 1, top - 1, left + width + 1, top + height + 1);
mLastMotionX = x;
mLastMotionY = y;
left = (int) (scrollX + x - touchX - offsetX);
top = (int) (scrollY + y - touchY - offsetY);
// Invalidate current icon position
rect.union(left - 1, top - 1, left + width + 1, top + height + 1);
final int[] coordinates = mDropCoordinates;
DropTarget dropTarget = findDropTarget((int) x, (int) y, coordinates);
if (dropTarget != null) {
if (mLastDropTarget == dropTarget) {
dropTarget.onDragOver(
mDragSource,
coordinates[0],
coordinates[1],
(int) mTouchOffsetX,
(int) mTouchOffsetY,
mDragInfo);
} else {
if (mLastDropTarget != null) {
mLastDropTarget.onDragExit(
mDragSource,
coordinates[0],
coordinates[1],
(int) mTouchOffsetX,
(int) mTouchOffsetY,
mDragInfo);
}
dropTarget.onDragEnter(
mDragSource,
coordinates[0],
coordinates[1],
(int) mTouchOffsetX,
(int) mTouchOffsetY,
mDragInfo);
}
} else {
if (mLastDropTarget != null) {
mLastDropTarget.onDragExit(
mDragSource,
coordinates[0],
coordinates[1],
(int) mTouchOffsetX,
(int) mTouchOffsetY,
mDragInfo);
}
}
invalidate(rect);
mLastDropTarget = dropTarget;
if (mTagPopup != null) {
if (Math.abs(mOriginalX - mLastMotionX) > SCROLL_ZONE
|| Math.abs(mOriginalY - mLastMotionY) > SCROLL_ZONE) {
final QuickActionWindow qa = (QuickActionWindow) mTagPopup;
qa.dismiss();
mTagPopup = null;
}
}
boolean inDragRegion = false;
if (mDragRegion != null) {
final RectF region = mDragRegion;
final boolean inRegion = region.contains(ev.getRawX(), ev.getRawY());
if (!mEnteredRegion && inRegion) {
mDragPaint = mTrashPaint;
mRectPaint.setColor(COLOR_TRASH);
mEnteredRegion = true;
inDragRegion = true;
} else if (mEnteredRegion && !inRegion) {
mDragPaint = null;
mRectPaint.setColor(COLOR_NORMAL);
mEnteredRegion = false;
}
}
if (!inDragRegion && x < SCROLL_ZONE) {
if (mScrollState == SCROLL_OUTSIDE_ZONE) {
mScrollState = SCROLL_WAITING_IN_ZONE;
mScrollRunnable.setDirection(SCROLL_LEFT);
postDelayed(mScrollRunnable, SCROLL_DELAY);
}
} else if (!inDragRegion && x > getWidth() - SCROLL_ZONE) {
if (mScrollState == SCROLL_OUTSIDE_ZONE) {
mScrollState = SCROLL_WAITING_IN_ZONE;
mScrollRunnable.setDirection(SCROLL_RIGHT);
postDelayed(mScrollRunnable, SCROLL_DELAY);
}
} else {
if (mScrollState == SCROLL_WAITING_IN_ZONE) {
mScrollState = SCROLL_OUTSIDE_ZONE;
mScrollRunnable.setDirection(SCROLL_RIGHT);
removeCallbacks(mScrollRunnable);
}
}
break;
case MotionEvent.ACTION_UP:
removeCallbacks(mScrollRunnable);
if (mShouldDrop) {
drop(x, y);
mShouldDrop = false;
}
endDrag();
break;
case MotionEvent.ACTION_CANCEL:
endDrag();
}
return true;
}