Added proper overscrolling scroll bar behavior to GridView (f2a204e7) · Commits · e / os / android_frameworks_base

core/java/android/widget/GridView.java

+11 −3

Original line number	Diff line number	Diff line
		@@ -1856,8 +1856,11 @@ public class GridView extends AbsListView {
		final int top = view.getTop();
		int height = view.getHeight();
		if (height > 0) {
		final int whichRow = mFirstPosition / mNumColumns;
		return Math.max(whichRow * 100 - (top * 100) / height, 0);
		final int numColumns = mNumColumns;
		final int whichRow = mFirstPosition / numColumns;
		final int rowCount = (mItemCount + numColumns - 1) / numColumns;
		return Math.max(whichRow * 100 - (top * 100) / height +
		(int) ((float) mScrollY / getHeight() * rowCount * 100), 0);
		}
		}
		return 0;
		@@ -1868,7 +1871,12 @@ public class GridView extends AbsListView {
		// TODO: Account for vertical spacing too
		final int numColumns = mNumColumns;
		final int rowCount = (mItemCount + numColumns - 1) / numColumns;
		return Math.max(rowCount * 100, 0);
		int result = Math.max(rowCount * 100, 0);
		if (mScrollY != 0) {
		// Compensate for overscroll
		result += Math.abs((int) ((float) mScrollY / getHeight() * rowCount * 100));
		}
		return result;
		}
		}