private void clearScrollRunnable() {
mHandler.removeCallbacks(mScrollRunnable);
if (mScrollState == SCROLL_WAITING_IN_ZONE) {
mScrollState = SCROLL_OUTSIDE_ZONE;
mScrollRunnable.setDirection(SCROLL_RIGHT);
mDragScroller.onExitScrollArea();
mLauncher.getDragLayer().onExitScrollArea();
}
}
@SuppressLint("NewApi")
private void checkScrollState(int x, int y) {
final int slop = ViewConfiguration.get(mLauncher).getScaledWindowTouchSlop();
final int delay = mDistanceSinceScroll < slop ? RESCROLL_DELAY : SCROLL_DELAY;
final DragLayer dragLayer = mLauncher.getDragLayer();
boolean isRtl = false;
if (Build.VERSION.SDK_INT >= 17) { // Modified by cooee Hugo.ye for API
// level
isRtl = (dragLayer.getLayoutDirection() == View.LAYOUT_DIRECTION_RTL);
}
final int forwardDirection = isRtl ? SCROLL_RIGHT : SCROLL_LEFT;
final int backwardsDirection = isRtl ? SCROLL_LEFT : SCROLL_RIGHT;
if (x < mScrollZone) {
if (mScrollState == SCROLL_OUTSIDE_ZONE) {
mScrollState = SCROLL_WAITING_IN_ZONE;
if (mDragScroller.onEnterScrollArea(x, y, forwardDirection)) {
dragLayer.onEnterScrollArea(forwardDirection);
mScrollRunnable.setDirection(forwardDirection);
mHandler.postDelayed(mScrollRunnable, delay);
}
}
} else if (x > mScrollView.getWidth() - mScrollZone) {
if (mScrollState == SCROLL_OUTSIDE_ZONE) {
mScrollState = SCROLL_WAITING_IN_ZONE;
if (mDragScroller.onEnterScrollArea(x, y, backwardsDirection)) {
dragLayer.onEnterScrollArea(backwardsDirection);
mScrollRunnable.setDirection(backwardsDirection);
mHandler.postDelayed(mScrollRunnable, delay);
}
}
} else {
clearScrollRunnable();
}
}
/** Call this from a drag source view. */
public boolean onTouchEvent(MotionEvent ev) {
View scrollView = mScrollView;
if (!mDragging) {
return false;
}
final int action = ev.getAction();
final int screenX = clamp((int) ev.getRawX(), 0, mDisplayMetrics.widthPixels);
final int screenY = clamp((int) ev.getRawY(), 0, mDisplayMetrics.heightPixels);
switch (action) {
case MotionEvent.ACTION_DOWN:
// Remember where the motion event started
mMotionDownX = screenX;
mMotionDownY = screenY;
if ((screenX < SCROLL_ZONE)
|| (screenY < Launcher.mScreenHeight - Workspace.workspaceBottom)
|| (screenX > scrollView.getWidth() - SCROLL_ZONE)) {
mScrollState = SCROLL_WAITING_IN_ZONE;
mHandler.postDelayed(mScrollRunnable, SCROLL_DELAY);
} else {
mScrollState = SCROLL_OUTSIDE_ZONE;
}
break;
case MotionEvent.ACTION_MOVE:
// Update the drag view. Don't use the clamped pos here so the
// dragging looks
// like it goes off screen a little, intead of bumping up against
// the edge.
mDragView.move((int) ev.getRawX(), (int) ev.getRawY());
// Drop on someone?
final int[] coordinates = mCoordinatesTemp;
DropTarget dropTarget = findDropTarget(screenX, screenY, coordinates);
if (dropTarget != null) {
if (mLastDropTarget == dropTarget) {
dropTarget.onDragOver(
mDragSource,
coordinates[0],
coordinates[1],
(int) mTouchOffsetX,
(int) mTouchOffsetY,
mDragView,
mDragInfo);
} else {
if (mLastDropTarget != null) {
mLastDropTarget.onDragExit(
mDragSource,
coordinates[0],
coordinates[1],
(int) mTouchOffsetX,
(int) mTouchOffsetY,
mDragView,
mDragInfo);
}
dropTarget.onDragEnter(
mDragSource,
coordinates[0],
coordinates[1],
(int) mTouchOffsetX,
(int) mTouchOffsetY,
mDragView,
mDragInfo);
}
} else {
if (mLastDropTarget != null) {
mLastDropTarget.onDragExit(
mDragSource,
coordinates[0],
coordinates[1],
(int) mTouchOffsetX,
(int) mTouchOffsetY,
mDragView,
mDragInfo);
}
}
mLastDropTarget = dropTarget;
// Scroll, maybe, but not if we're in the delete region.
boolean inDeleteRegion = false;
if (mDeleteRegion != null) {
inDeleteRegion = mDeleteRegion.contains(screenX, screenY);
}
if (!inDeleteRegion
&& screenX < SCROLL_ZONE
&& (screenY < Launcher.mScreenHeight - Workspace.workspaceBottom)) {
if (mScrollState == SCROLL_OUTSIDE_ZONE) {
mScrollState = SCROLL_WAITING_IN_ZONE;
mScrollRunnable.setDirection(SCROLL_LEFT);
mHandler.postDelayed(mScrollRunnable, SCROLL_DELAY);
}
} else if (!inDeleteRegion
&& screenX > scrollView.getWidth() - SCROLL_ZONE
&& (screenY < Launcher.mScreenHeight - Workspace.workspaceBottom)) {
if (mScrollState == SCROLL_OUTSIDE_ZONE) {
mScrollState = SCROLL_WAITING_IN_ZONE;
mScrollRunnable.setDirection(SCROLL_RIGHT);
mHandler.postDelayed(mScrollRunnable, SCROLL_DELAY);
}
} else {
if (mScrollState == SCROLL_WAITING_IN_ZONE) {
mScrollState = SCROLL_OUTSIDE_ZONE;
mScrollRunnable.setDirection(SCROLL_RIGHT);
mHandler.removeCallbacks(mScrollRunnable);
}
}
break;
case MotionEvent.ACTION_UP:
mHandler.removeCallbacks(mScrollRunnable);
if (mDragging) {
drop(screenX, screenY);
}
endDrag();
break;
case MotionEvent.ACTION_CANCEL:
cancelDrag();
}
return true;
}
@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;
}