ImageCardView.java revision 5358b0ca6ed795892bd097fdf15d41fb6b1a03d2 
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 */
14package android.support.v17.leanback.widget;
15
16import android.content.Context;
17import android.content.res.TypedArray;
18import android.graphics.drawable.Drawable;
19import android.support.v17.leanback.R;
20import android.text.TextUtils;
21import android.util.AttributeSet;
22import android.view.LayoutInflater;
23import android.view.View;
24import android.view.ViewGroup;
25import android.widget.ImageView;
26import android.widget.ImageView.ScaleType;
27import android.widget.TextView;
28
29/**
30 * A card view with an {@link ImageView} as its main region.
31 */
32public class ImageCardView extends BaseCardView {
33
34    private ImageView mImageView;
35    private View mInfoArea;
36    private TextView mTitleView;
37    private TextView mContentView;
38    private ImageView mBadgeImage;
39    private ImageView mBadgeFadeMask;
40
41    public ImageCardView(Context context) {
42        this(context, null);
43    }
44
45    public ImageCardView(Context context, AttributeSet attrs) {
46        this(context, attrs, R.attr.imageCardViewStyle);
47    }
48
49    public ImageCardView(Context context, AttributeSet attrs, int defStyle) {
50        super(context, attrs, defStyle);
51
52        LayoutInflater inflater = LayoutInflater.from(context);
53        View v = inflater.inflate(R.layout.lb_image_card_view, this);
54
55        mImageView = (ImageView) v.findViewById(R.id.main_image);
56        mImageView.setVisibility(View.INVISIBLE);
57        mInfoArea = v.findViewById(R.id.info_field);
58        mTitleView = (TextView) v.findViewById(R.id.title_text);
59        mContentView = (TextView) v.findViewById(R.id.content_text);
60        mBadgeImage = (ImageView) v.findViewById(R.id.extra_badge);
61        mBadgeFadeMask = (ImageView) v.findViewById(R.id.fade_mask);
62
63        if (mInfoArea != null) {
64            TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.lbImageCardView,
65                    defStyle, 0);
66            try {
67                setInfoAreaBackground(
68                        a.getDrawable(R.styleable.lbImageCardView_infoAreaBackground));
69            } finally {
70                a.recycle();
71            }
72        }
73    }
74
75    public final ImageView getMainImageView() {
76        return mImageView;
77    }
78
79    public void setMainImageAdjustViewBounds(boolean adjustViewBounds) {
80        if (mImageView != null) {
81            mImageView.setAdjustViewBounds(adjustViewBounds);
82        }
83    }
84
85    public void setMainImageScaleType(ScaleType scaleType) {
86        if (mImageView != null) {
87            mImageView.setScaleType(scaleType);
88        }
89    }
90
91    /**
92     * Set drawable with fade-in animation.
93     */
94    public void setMainImage(Drawable drawable) {
95        setMainImage(drawable, true);
96    }
97
98    /**
99     * Set drawable with optional fade-in animation.
100     */
101    public void setMainImage(Drawable drawable, boolean fade) {
102        if (mImageView == null) {
103            return;
104        }
105
106        mImageView.setImageDrawable(drawable);
107        if (drawable == null) {
108            mImageView.animate().cancel();
109            mImageView.setAlpha(1f);
110            mImageView.setVisibility(View.INVISIBLE);
111        } else {
112            mImageView.setVisibility(View.VISIBLE);
113            if (fade) {
114                fadeIn(mImageView);
115            } else {
116                mImageView.animate().cancel();
117                mImageView.setAlpha(1f);
118            }
119        }
120    }
121
122    public void setMainImageDimensions(int width, int height) {
123        ViewGroup.LayoutParams lp = mImageView.getLayoutParams();
124        lp.width = width;
125        lp.height = height;
126        mImageView.setLayoutParams(lp);
127    }
128
129    public Drawable getMainImage() {
130        if (mImageView == null) {
131            return null;
132        }
133
134        return mImageView.getDrawable();
135    }
136
137    public Drawable getInfoAreaBackground() {
138        if (mInfoArea != null) {
139            return mInfoArea.getBackground();
140        }
141        return null;
142    }
143
144    public void setInfoAreaBackground(Drawable drawable) {
145        if (mInfoArea != null) {
146            mInfoArea.setBackground(drawable);
147            if (mBadgeImage != null) {
148                mBadgeImage.setBackground(drawable);
149            }
150        }
151    }
152
153    public void setInfoAreaBackgroundColor(int color) {
154        if (mInfoArea != null) {
155            mInfoArea.setBackgroundColor(color);
156            if (mBadgeImage != null) {
157                mBadgeImage.setBackgroundColor(color);
158            }
159        }
160    }
161
162    public void setTitleText(CharSequence text) {
163        if (mTitleView == null) {
164            return;
165        }
166
167        mTitleView.setText(text);
168        setTextMaxLines();
169    }
170
171    public CharSequence getTitleText() {
172        if (mTitleView == null) {
173            return null;
174        }
175
176        return mTitleView.getText();
177    }
178
179    public void setContentText(CharSequence text) {
180        if (mContentView == null) {
181            return;
182        }
183
184        mContentView.setText(text);
185        setTextMaxLines();
186    }
187
188    public CharSequence getContentText() {
189        if (mContentView == null) {
190            return null;
191        }
192
193        return mContentView.getText();
194    }
195
196    public void setBadgeImage(Drawable drawable) {
197        if (mBadgeImage == null) {
198            return;
199        }
200
201        if (drawable != null) {
202            mBadgeImage.setImageDrawable(drawable);
203            mBadgeImage.setVisibility(View.VISIBLE);
204            mBadgeFadeMask.setVisibility(View.VISIBLE);
205        } else {
206            mBadgeImage.setVisibility(View.GONE);
207            mBadgeFadeMask.setVisibility(View.GONE);
208        }
209    }
210
211    public Drawable getBadgeImage() {
212        if (mBadgeImage == null) {
213            return null;
214        }
215
216        return mBadgeImage.getDrawable();
217    }
218
219    private void fadeIn(View v) {
220        v.setAlpha(0f);
221        v.animate().alpha(1f).setDuration(v.getContext().getResources().getInteger(
222                android.R.integer.config_shortAnimTime)).start();
223    }
224
225    private void setTextMaxLines() {
226        if (TextUtils.isEmpty(getTitleText())) {
227            mContentView.setMaxLines(2);
228        } else {
229            mContentView.setMaxLines(1);
230        }
231        if (TextUtils.isEmpty(getContentText())) {
232            mTitleView.setMaxLines(2);
233        } else {
234            mTitleView.setMaxLines(1);
235        }
236    }
237
238    @Override
239    protected void onDetachedFromWindow() {
240        mImageView.animate().cancel();
241        mImageView.setAlpha(1f);
242        super.onDetachedFromWindow();
243    }
244}
245