ImageSpan.java revision 3001a035439d8134a7d70d796376d1dfbff3cdcd 
1/*
2 * Copyright (C) 2006 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
17package android.text.style;
18
19import android.content.Context;
20import android.graphics.Bitmap;
21import android.graphics.BitmapFactory;
22import android.graphics.drawable.BitmapDrawable;
23import android.graphics.drawable.Drawable;
24import android.net.Uri;
25import android.util.Log;
26
27import java.io.InputStream;
28
29public class ImageSpan extends DynamicDrawableSpan {
30    private Drawable mDrawable;
31    private Uri mContentUri;
32    private int mResourceId;
33    private Context mContext;
34    private String mSource;
35
36    public ImageSpan(Bitmap b) {
37        this(b, ALIGN_BOTTOM);
38    }
39
40    /**
41     * @param verticalAlignment one of {@link DynamicDrawableSpan#ALIGN_BOTTOM} or
42     * {@link DynamicDrawableSpan#ALIGN_BASELINE}.
43     */
44    public ImageSpan(Bitmap b, int verticalAlignment) {
45        super(verticalAlignment);
46        mDrawable = new BitmapDrawable(b);
47        int width = mDrawable.getIntrinsicWidth();
48        int height = mDrawable.getIntrinsicHeight();
49        mDrawable.setBounds(0, 0, width > 0 ? width : 0, height > 0 ? height : 0);
50    }
51
52    public ImageSpan(Drawable d) {
53        this(d, ALIGN_BOTTOM);
54    }
55
56    /**
57     * @param verticalAlignment one of {@link DynamicDrawableSpan#ALIGN_BOTTOM} or
58     * {@link DynamicDrawableSpan#ALIGN_BASELINE}.
59     */
60    public ImageSpan(Drawable d, int verticalAlignment) {
61        super(verticalAlignment);
62        mDrawable = d;
63    }
64
65    public ImageSpan(Drawable d, String source) {
66        this(d, source, ALIGN_BOTTOM);
67    }
68
69    /**
70     * @param verticalAlignment one of {@link DynamicDrawableSpan#ALIGN_BOTTOM} or
71     * {@link DynamicDrawableSpan#ALIGN_BASELINE}.
72     */
73    public ImageSpan(Drawable d, String source, int verticalAlignment) {
74        super(verticalAlignment);
75        mDrawable = d;
76        mSource = source;
77    }
78
79    public ImageSpan(Context context, Uri uri) {
80        this(context, uri, ALIGN_BOTTOM);
81    }
82
83    /**
84     * @param verticalAlignment one of {@link DynamicDrawableSpan#ALIGN_BOTTOM} or
85     * {@link DynamicDrawableSpan#ALIGN_BASELINE}.
86     */
87    public ImageSpan(Context context, Uri uri, int verticalAlignment) {
88        super(verticalAlignment);
89        mContext = context;
90        mContentUri = uri;
91    }
92
93    public ImageSpan(Context context, int resourceId) {
94        this(context, resourceId, ALIGN_BOTTOM);
95    }
96
97    /**
98     * @param verticalAlignment one of {@link DynamicDrawableSpan#ALIGN_BOTTOM} or
99     * {@link DynamicDrawableSpan#ALIGN_BASELINE}.
100     */
101    public ImageSpan(Context context, int resourceId, int verticalAlignment) {
102        super(verticalAlignment);
103        mContext = context;
104        mResourceId = resourceId;
105    }
106
107    @Override
108    public Drawable getDrawable() {
109        Drawable drawable = null;
110
111        if (mDrawable != null) {
112            drawable = mDrawable;
113        } else  if (mContentUri != null) {
114            Bitmap bitmap = null;
115            try {
116                InputStream is = mContext.getContentResolver().openInputStream(
117                        mContentUri);
118                bitmap = BitmapFactory.decodeStream(is);
119                drawable = new BitmapDrawable(bitmap);
120                is.close();
121            } catch (Exception e) {
122                Log.e("sms", "Failed to loaded content " + mContentUri, e);
123            }
124        } else {
125            try {
126                drawable = mContext.getResources().getDrawable(mResourceId);
127                drawable.setBounds(0, 0, drawable.getIntrinsicWidth(),
128                        drawable.getIntrinsicHeight());
129            } catch (Exception e) {
130                Log.e("sms", "Unable to find resource: " + mResourceId);
131            }
132        }
133
134        return drawable;
135    }
136
137    /**
138     * Returns the source string that was saved during construction.
139     */
140    public String getSource() {
141        return mSource;
142    }
143
144}
145