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      1 /*
      2  * Copyright (C) 2008 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.camera;
     18 
     19 import com.android.gallery.R;
     20 
     21 import android.content.Context;
     22 import android.graphics.Canvas;
     23 import android.graphics.Rect;
     24 import android.graphics.drawable.Drawable;
     25 import android.util.AttributeSet;
     26 import android.widget.ImageView;
     27 
     28 class GalleryPickerItem extends ImageView {
     29     private Drawable mFrame;
     30     private Rect mFrameBounds = new Rect();
     31     private Drawable mOverlay;
     32 
     33     public GalleryPickerItem(Context context) {
     34         this(context, null);
     35     }
     36 
     37     public GalleryPickerItem(Context context, AttributeSet attrs) {
     38         this(context, attrs, 0);
     39     }
     40 
     41     public GalleryPickerItem(Context context,
     42                              AttributeSet attrs,
     43                              int defStyle) {
     44         super(context, attrs, defStyle);
     45 
     46         mFrame = getResources().getDrawable(R.drawable.frame_gallery_preview);
     47         mFrame.setCallback(this);
     48     }
     49 
     50     @Override
     51     protected boolean verifyDrawable(Drawable who) {
     52         return super.verifyDrawable(who) || (who == mFrame)
     53                 || (who == mOverlay);
     54     }
     55 
     56     @Override
     57     protected void drawableStateChanged() {
     58         super.drawableStateChanged();
     59         if (mFrame != null) {
     60             int[] drawableState = getDrawableState();
     61             mFrame.setState(drawableState);
     62         }
     63     }
     64 
     65     @Override
     66     protected void onDraw(Canvas canvas) {
     67         super.onDraw(canvas);
     68         final Rect frameBounds = mFrameBounds;
     69         if (frameBounds.isEmpty()) {
     70             final int w = getWidth();
     71             final int h = getHeight();
     72 
     73             frameBounds.set(0, 0, w, h);
     74             mFrame.setBounds(frameBounds);
     75             if (mOverlay != null) {
     76                 mOverlay.setBounds(w - mOverlay.getIntrinsicWidth(),
     77                         h - mOverlay.getIntrinsicHeight(), w, h);
     78             }
     79         }
     80 
     81         mFrame.draw(canvas);
     82         if (mOverlay != null) {
     83             mOverlay.draw(canvas);
     84         }
     85     }
     86 
     87 
     88     @Override
     89     protected void onSizeChanged(int w, int h, int oldw, int oldh) {
     90         super.onSizeChanged(w, h, oldw, oldh);
     91 
     92         mFrameBounds.setEmpty();
     93     }
     94 
     95     public void setOverlay(int overlayId) {
     96         if (overlayId >= 0) {
     97             mOverlay = getResources().getDrawable(overlayId);
     98             mFrameBounds.setEmpty();
     99         } else {
    100             mOverlay = null;
    101         }
    102     }
    103 }
    104