1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 5 * in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the License 10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 11 * or implied. See the License for the specific language governing permissions and limitations under 12 * the License. 13 */ 14 15 package android.support.v17.leanback.widget; 16 17 import static android.support.v7.widget.RecyclerView.HORIZONTAL; 18 import static android.support.v7.widget.RecyclerView.VERTICAL; 19 import static android.support.v17.leanback.widget.BaseGridView.ITEM_ALIGN_OFFSET_PERCENT_DISABLED; 20 21 import android.graphics.Rect; 22 import android.support.v17.leanback.widget.GridLayoutManager.LayoutParams; 23 import android.view.View; 24 import android.view.ViewGroup; 25 26 /** 27 * Defines alignment position on two directions of an item view. Typically item 28 * view alignment is at the center of the view. The class allows defining 29 * alignment at left/right or fixed offset/percentage position; it also allows 30 * using descendant view by id match. 31 */ 32 class ItemAlignment { 33 34 final static class Axis extends ItemAlignmentFacet.ItemAlignmentDef { 35 private int mOrientation; 36 Axis(int orientation)37 Axis(int orientation) { 38 mOrientation = orientation; 39 } 40 41 /** 42 * get alignment position relative to optical left/top of itemView. 43 */ getAlignmentPosition(View itemView)44 public int getAlignmentPosition(View itemView) { 45 return ItemAlignmentFacetHelper.getAlignmentPosition(itemView, this, mOrientation); 46 } 47 } 48 49 private int mOrientation = HORIZONTAL; 50 51 final public Axis vertical = new Axis(VERTICAL); 52 53 final public Axis horizontal = new Axis(HORIZONTAL); 54 55 private Axis mMainAxis = horizontal; 56 57 private Axis mSecondAxis = vertical; 58 mainAxis()59 final public Axis mainAxis() { 60 return mMainAxis; 61 } 62 secondAxis()63 final public Axis secondAxis() { 64 return mSecondAxis; 65 } 66 setOrientation(int orientation)67 final public void setOrientation(int orientation) { 68 mOrientation = orientation; 69 if (mOrientation == HORIZONTAL) { 70 mMainAxis = horizontal; 71 mSecondAxis = vertical; 72 } else { 73 mMainAxis = vertical; 74 mSecondAxis = horizontal; 75 } 76 } 77 getOrientation()78 final public int getOrientation() { 79 return mOrientation; 80 } 81 82 83 } 84