1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.documentsui; 18 19 import android.content.Context; 20 import android.graphics.drawable.Drawable; 21 import android.graphics.drawable.LayerDrawable; 22 import android.util.AttributeSet; 23 import android.view.Gravity; 24 import android.widget.ImageView; 25 26 /** 27 * Provides a way to encapsulate droppable badge toggling logic into a single class. 28 */ 29 public final class DropBadgeView extends ImageView { 30 private static final int[] STATE_DROPPABLE = {R.attr.state_droppable}; 31 private static final int[] STATE_DROP_HOVERED = {R.attr.state_drop_hovered}; 32 33 private boolean mDroppable = false; 34 private boolean mDropHovered = false; 35 private LayerDrawable mBackground; 36 DropBadgeView(Context context, AttributeSet attrs)37 public DropBadgeView(Context context, AttributeSet attrs) { 38 super(context, attrs); 39 40 final int badgeHeight = context.getResources() 41 .getDimensionPixelSize(R.dimen.drop_icon_height); 42 final int badgeWidth = context.getResources() 43 .getDimensionPixelSize(R.dimen.drop_icon_width); 44 final int iconSize = context.getResources().getDimensionPixelSize(R.dimen.root_icon_size); 45 46 Drawable okBadge = context.getResources().getDrawable(R.drawable.drop_badge_states, null); 47 Drawable defaultIcon = context.getResources() 48 .getDrawable(R.drawable.ic_doc_generic, null); 49 50 Drawable[] list = {defaultIcon, okBadge}; 51 mBackground = new LayerDrawable(list); 52 53 mBackground.setLayerGravity(1, Gravity.BOTTOM | Gravity.RIGHT); 54 mBackground.setLayerGravity(0, Gravity.TOP | Gravity.LEFT); 55 mBackground.setLayerSize(1, badgeWidth, badgeHeight); 56 mBackground.setLayerSize(0, iconSize, iconSize); 57 58 setBackground(mBackground); 59 } 60 61 @Override onCreateDrawableState(int extraSpace)62 public int[] onCreateDrawableState(int extraSpace) { 63 final int[] drawableState = super.onCreateDrawableState(extraSpace + 2); 64 65 if (mDroppable) { 66 mergeDrawableStates(drawableState, STATE_DROPPABLE); 67 } 68 69 if (mDropHovered) { 70 mergeDrawableStates(drawableState, STATE_DROP_HOVERED); 71 } 72 73 return drawableState; 74 } 75 setDroppable(boolean droppable)76 public void setDroppable(boolean droppable) { 77 mDroppable = droppable; 78 refreshDrawableState(); 79 } 80 setDropHovered(boolean hovered)81 public void setDropHovered(boolean hovered) { 82 mDropHovered = hovered; 83 refreshDrawableState(); 84 } 85 updateIcon(Drawable icon)86 public void updateIcon(Drawable icon) { 87 mBackground.setDrawable(0, icon); 88 } 89 }