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
17package com.android.systemui.statusbar;
18
19import android.app.Notification;
20import android.content.Context;
21import android.content.pm.PackageManager;
22import android.content.res.Resources;
23import android.graphics.drawable.Drawable;
24import android.graphics.Canvas;
25import android.graphics.Paint;
26import android.graphics.Rect;
27import android.os.UserHandle;
28import android.text.TextUtils;
29import android.util.AttributeSet;
30import android.util.Slog;
31import android.util.Log;
32import android.view.ViewDebug;
33import android.view.accessibility.AccessibilityEvent;
34import android.widget.ImageView;
35
36import java.text.NumberFormat;
37
38import com.android.internal.statusbar.StatusBarIcon;
39
40import com.android.systemui.R;
41
42public class StatusBarIconView extends AnimatedImageView {
43    private static final String TAG = "StatusBarIconView";
44
45    private StatusBarIcon mIcon;
46    @ViewDebug.ExportedProperty private String mSlot;
47    private Drawable mNumberBackground;
48    private Paint mNumberPain;
49    private int mNumberX;
50    private int mNumberY;
51    private String mNumberText;
52    private Notification mNotification;
53
54    public StatusBarIconView(Context context, String slot, Notification notification) {
55        super(context);
56        final Resources res = context.getResources();
57        mSlot = slot;
58        mNumberPain = new Paint();
59        mNumberPain.setTextAlign(Paint.Align.CENTER);
60        mNumberPain.setColor(res.getColor(R.drawable.notification_number_text_color));
61        mNumberPain.setAntiAlias(true);
62        mNotification = notification;
63        setContentDescription(notification);
64
65        // We do not resize and scale system icons (on the right), only notification icons (on the
66        // left).
67        if (notification != null) {
68            final int outerBounds = res.getDimensionPixelSize(R.dimen.status_bar_icon_size);
69            final int imageBounds = res.getDimensionPixelSize(R.dimen.status_bar_icon_drawing_size);
70            final float scale = (float)imageBounds / (float)outerBounds;
71            setScaleX(scale);
72            setScaleY(scale);
73            final float alpha = res.getFraction(R.dimen.status_bar_icon_drawing_alpha, 1, 1);
74            setAlpha(alpha);
75        }
76
77        setScaleType(ImageView.ScaleType.CENTER);
78    }
79
80    public StatusBarIconView(Context context, AttributeSet attrs) {
81        super(context, attrs);
82        final Resources res = context.getResources();
83        final int outerBounds = res.getDimensionPixelSize(R.dimen.status_bar_icon_size);
84        final int imageBounds = res.getDimensionPixelSize(R.dimen.status_bar_icon_drawing_size);
85        final float scale = (float)imageBounds / (float)outerBounds;
86        setScaleX(scale);
87        setScaleY(scale);
88        final float alpha = res.getFraction(R.dimen.status_bar_icon_drawing_alpha, 1, 1);
89        setAlpha(alpha);
90    }
91
92    private static boolean streq(String a, String b) {
93        if (a == b) {
94            return true;
95        }
96        if (a == null && b != null) {
97            return false;
98        }
99        if (a != null && b == null) {
100            return false;
101        }
102        return a.equals(b);
103    }
104
105    /**
106     * Returns whether the set succeeded.
107     */
108    public boolean set(StatusBarIcon icon) {
109        final boolean iconEquals = mIcon != null
110                && streq(mIcon.iconPackage, icon.iconPackage)
111                && mIcon.iconId == icon.iconId;
112        final boolean levelEquals = iconEquals
113                && mIcon.iconLevel == icon.iconLevel;
114        final boolean visibilityEquals = mIcon != null
115                && mIcon.visible == icon.visible;
116        final boolean numberEquals = mIcon != null
117                && mIcon.number == icon.number;
118        mIcon = icon.clone();
119        setContentDescription(icon.contentDescription);
120        if (!iconEquals) {
121            Drawable drawable = getIcon(icon);
122            if (drawable == null) {
123                Slog.w(TAG, "No icon for slot " + mSlot);
124                return false;
125            }
126            setImageDrawable(drawable);
127        }
128        if (!levelEquals) {
129            setImageLevel(icon.iconLevel);
130        }
131
132        if (!numberEquals) {
133            if (icon.number > 0 && mContext.getResources().getBoolean(
134                        R.bool.config_statusBarShowNumber)) {
135                if (mNumberBackground == null) {
136                    mNumberBackground = getContext().getResources().getDrawable(
137                            R.drawable.ic_notification_overlay);
138                }
139                placeNumber();
140            } else {
141                mNumberBackground = null;
142                mNumberText = null;
143            }
144            invalidate();
145        }
146        if (!visibilityEquals) {
147            setVisibility(icon.visible ? VISIBLE : GONE);
148        }
149        return true;
150    }
151
152    private Drawable getIcon(StatusBarIcon icon) {
153        return getIcon(getContext(), icon);
154    }
155
156    /**
157     * Returns the right icon to use for this item, respecting the iconId and
158     * iconPackage (if set)
159     *
160     * @param context Context to use to get resources if iconPackage is not set
161     * @return Drawable for this item, or null if the package or item could not
162     *         be found
163     */
164    public static Drawable getIcon(Context context, StatusBarIcon icon) {
165        Resources r = null;
166
167        if (icon.iconPackage != null) {
168            try {
169                int userId = icon.user.getIdentifier();
170                if (userId == UserHandle.USER_ALL) {
171                    userId = UserHandle.USER_OWNER;
172                }
173                r = context.getPackageManager()
174                        .getResourcesForApplicationAsUser(icon.iconPackage, userId);
175            } catch (PackageManager.NameNotFoundException ex) {
176                Slog.e(TAG, "Icon package not found: " + icon.iconPackage);
177                return null;
178            }
179        } else {
180            r = context.getResources();
181        }
182
183        if (icon.iconId == 0) {
184            return null;
185        }
186
187        try {
188            return r.getDrawable(icon.iconId);
189        } catch (RuntimeException e) {
190            Slog.w(TAG, "Icon not found in "
191                  + (icon.iconPackage != null ? icon.iconId : "<system>")
192                  + ": " + Integer.toHexString(icon.iconId));
193        }
194
195        return null;
196    }
197
198    public StatusBarIcon getStatusBarIcon() {
199        return mIcon;
200    }
201
202    @Override
203    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
204        super.onInitializeAccessibilityEvent(event);
205        if (mNotification != null) {
206            event.setParcelableData(mNotification);
207        }
208    }
209
210    @Override
211    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
212        super.onSizeChanged(w, h, oldw, oldh);
213        if (mNumberBackground != null) {
214            placeNumber();
215        }
216    }
217
218    @Override
219    protected void onDraw(Canvas canvas) {
220        super.onDraw(canvas);
221
222        if (mNumberBackground != null) {
223            mNumberBackground.draw(canvas);
224            canvas.drawText(mNumberText, mNumberX, mNumberY, mNumberPain);
225        }
226    }
227
228    @Override
229    protected void debug(int depth) {
230        super.debug(depth);
231        Log.d("View", debugIndent(depth) + "slot=" + mSlot);
232        Log.d("View", debugIndent(depth) + "icon=" + mIcon);
233    }
234
235    void placeNumber() {
236        final String str;
237        final int tooBig = mContext.getResources().getInteger(
238                android.R.integer.status_bar_notification_info_maxnum);
239        if (mIcon.number > tooBig) {
240            str = mContext.getResources().getString(
241                        android.R.string.status_bar_notification_info_overflow);
242        } else {
243            NumberFormat f = NumberFormat.getIntegerInstance();
244            str = f.format(mIcon.number);
245        }
246        mNumberText = str;
247
248        final int w = getWidth();
249        final int h = getHeight();
250        final Rect r = new Rect();
251        mNumberPain.getTextBounds(str, 0, str.length(), r);
252        final int tw = r.right - r.left;
253        final int th = r.bottom - r.top;
254        mNumberBackground.getPadding(r);
255        int dw = r.left + tw + r.right;
256        if (dw < mNumberBackground.getMinimumWidth()) {
257            dw = mNumberBackground.getMinimumWidth();
258        }
259        mNumberX = w-r.right-((dw-r.right-r.left)/2);
260        int dh = r.top + th + r.bottom;
261        if (dh < mNumberBackground.getMinimumWidth()) {
262            dh = mNumberBackground.getMinimumWidth();
263        }
264        mNumberY = h-r.bottom-((dh-r.top-th-r.bottom)/2);
265        mNumberBackground.setBounds(w-dw, h-dh, w, h);
266    }
267
268    private void setContentDescription(Notification notification) {
269        if (notification != null) {
270            CharSequence tickerText = notification.tickerText;
271            if (!TextUtils.isEmpty(tickerText)) {
272                setContentDescription(tickerText);
273            }
274        }
275    }
276
277    public String toString() {
278        return "StatusBarIconView(slot=" + mSlot + " icon=" + mIcon
279            + " notification=" + mNotification + ")";
280    }
281}
282