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.Canvas;
24import android.graphics.Paint;
25import android.graphics.Rect;
26import android.graphics.drawable.Drawable;
27import android.os.UserHandle;
28import android.text.TextUtils;
29import android.util.AttributeSet;
30import android.util.Log;
31import android.view.ViewDebug;
32import android.view.accessibility.AccessibilityEvent;
33import android.widget.ImageView;
34
35import com.android.internal.statusbar.StatusBarIcon;
36import com.android.systemui.R;
37
38import java.text.NumberFormat;
39
40public class StatusBarIconView extends AnimatedImageView {
41    private static final String TAG = "StatusBarIconView";
42
43    private StatusBarIcon mIcon;
44    @ViewDebug.ExportedProperty private String mSlot;
45    private Drawable mNumberBackground;
46    private Paint mNumberPain;
47    private int mNumberX;
48    private int mNumberY;
49    private String mNumberText;
50    private Notification mNotification;
51
52    public StatusBarIconView(Context context, String slot, Notification notification) {
53        super(context);
54        final Resources res = context.getResources();
55        mSlot = slot;
56        mNumberPain = new Paint();
57        mNumberPain.setTextAlign(Paint.Align.CENTER);
58        mNumberPain.setColor(res.getColor(R.drawable.notification_number_text_color));
59        mNumberPain.setAntiAlias(true);
60        setNotification(notification);
61
62        // We do not resize and scale system icons (on the right), only notification icons (on the
63        // left).
64        if (notification != null) {
65            final int outerBounds = res.getDimensionPixelSize(R.dimen.status_bar_icon_size);
66            final int imageBounds = res.getDimensionPixelSize(R.dimen.status_bar_icon_drawing_size);
67            final float scale = (float)imageBounds / (float)outerBounds;
68            setScaleX(scale);
69            setScaleY(scale);
70        }
71
72        setScaleType(ImageView.ScaleType.CENTER);
73    }
74
75    public void setNotification(Notification notification) {
76        mNotification = notification;
77        setContentDescription(notification);
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    }
89
90    private static boolean streq(String a, String b) {
91        if (a == b) {
92            return true;
93        }
94        if (a == null && b != null) {
95            return false;
96        }
97        if (a != null && b == null) {
98            return false;
99        }
100        return a.equals(b);
101    }
102
103    /**
104     * Returns whether the set succeeded.
105     */
106    public boolean set(StatusBarIcon icon) {
107        final boolean iconEquals = mIcon != null
108                && streq(mIcon.iconPackage, icon.iconPackage)
109                && mIcon.iconId == icon.iconId;
110        final boolean levelEquals = iconEquals
111                && mIcon.iconLevel == icon.iconLevel;
112        final boolean visibilityEquals = mIcon != null
113                && mIcon.visible == icon.visible;
114        final boolean numberEquals = mIcon != null
115                && mIcon.number == icon.number;
116        mIcon = icon.clone();
117        setContentDescription(icon.contentDescription);
118        if (!iconEquals) {
119            if (!updateDrawable(false /* no clear */)) return false;
120        }
121        if (!levelEquals) {
122            setImageLevel(icon.iconLevel);
123        }
124
125        if (!numberEquals) {
126            if (icon.number > 0 && getContext().getResources().getBoolean(
127                        R.bool.config_statusBarShowNumber)) {
128                if (mNumberBackground == null) {
129                    mNumberBackground = getContext().getResources().getDrawable(
130                            R.drawable.ic_notification_overlay);
131                }
132                placeNumber();
133            } else {
134                mNumberBackground = null;
135                mNumberText = null;
136            }
137            invalidate();
138        }
139        if (!visibilityEquals) {
140            setVisibility(icon.visible ? VISIBLE : GONE);
141        }
142        return true;
143    }
144
145    public void updateDrawable() {
146        updateDrawable(true /* with clear */);
147    }
148
149    private boolean updateDrawable(boolean withClear) {
150        Drawable drawable = getIcon(mIcon);
151        if (drawable == null) {
152            Log.w(TAG, "No icon for slot " + mSlot);
153            return false;
154        }
155        if (withClear) {
156            setImageDrawable(null);
157        }
158        setImageDrawable(drawable);
159        return true;
160    }
161
162    private Drawable getIcon(StatusBarIcon icon) {
163        return getIcon(getContext(), icon);
164    }
165
166    /**
167     * Returns the right icon to use for this item, respecting the iconId and
168     * iconPackage (if set)
169     *
170     * @param context Context to use to get resources if iconPackage is not set
171     * @return Drawable for this item, or null if the package or item could not
172     *         be found
173     */
174    public static Drawable getIcon(Context context, StatusBarIcon icon) {
175        Resources r = null;
176
177        if (icon.iconPackage != null) {
178            try {
179                int userId = icon.user.getIdentifier();
180                if (userId == UserHandle.USER_ALL) {
181                    userId = UserHandle.USER_OWNER;
182                }
183                r = context.getPackageManager()
184                        .getResourcesForApplicationAsUser(icon.iconPackage, userId);
185            } catch (PackageManager.NameNotFoundException ex) {
186                Log.e(TAG, "Icon package not found: " + icon.iconPackage);
187                return null;
188            }
189        } else {
190            r = context.getResources();
191        }
192
193        if (icon.iconId == 0) {
194            return null;
195        }
196
197        try {
198            return r.getDrawable(icon.iconId);
199        } catch (RuntimeException e) {
200            Log.w(TAG, "Icon not found in "
201                  + (icon.iconPackage != null ? icon.iconId : "<system>")
202                  + ": " + Integer.toHexString(icon.iconId));
203        }
204
205        return null;
206    }
207
208    public StatusBarIcon getStatusBarIcon() {
209        return mIcon;
210    }
211
212    @Override
213    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
214        super.onInitializeAccessibilityEvent(event);
215        if (mNotification != null) {
216            event.setParcelableData(mNotification);
217        }
218    }
219
220    @Override
221    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
222        super.onSizeChanged(w, h, oldw, oldh);
223        if (mNumberBackground != null) {
224            placeNumber();
225        }
226    }
227
228    @Override
229    protected void onDraw(Canvas canvas) {
230        super.onDraw(canvas);
231
232        if (mNumberBackground != null) {
233            mNumberBackground.draw(canvas);
234            canvas.drawText(mNumberText, mNumberX, mNumberY, mNumberPain);
235        }
236    }
237
238    @Override
239    protected void debug(int depth) {
240        super.debug(depth);
241        Log.d("View", debugIndent(depth) + "slot=" + mSlot);
242        Log.d("View", debugIndent(depth) + "icon=" + mIcon);
243    }
244
245    void placeNumber() {
246        final String str;
247        final int tooBig = getContext().getResources().getInteger(
248                android.R.integer.status_bar_notification_info_maxnum);
249        if (mIcon.number > tooBig) {
250            str = getContext().getResources().getString(
251                        android.R.string.status_bar_notification_info_overflow);
252        } else {
253            NumberFormat f = NumberFormat.getIntegerInstance();
254            str = f.format(mIcon.number);
255        }
256        mNumberText = str;
257
258        final int w = getWidth();
259        final int h = getHeight();
260        final Rect r = new Rect();
261        mNumberPain.getTextBounds(str, 0, str.length(), r);
262        final int tw = r.right - r.left;
263        final int th = r.bottom - r.top;
264        mNumberBackground.getPadding(r);
265        int dw = r.left + tw + r.right;
266        if (dw < mNumberBackground.getMinimumWidth()) {
267            dw = mNumberBackground.getMinimumWidth();
268        }
269        mNumberX = w-r.right-((dw-r.right-r.left)/2);
270        int dh = r.top + th + r.bottom;
271        if (dh < mNumberBackground.getMinimumWidth()) {
272            dh = mNumberBackground.getMinimumWidth();
273        }
274        mNumberY = h-r.bottom-((dh-r.top-th-r.bottom)/2);
275        mNumberBackground.setBounds(w-dw, h-dh, w, h);
276    }
277
278    private void setContentDescription(Notification notification) {
279        if (notification != null) {
280            CharSequence tickerText = notification.tickerText;
281            if (!TextUtils.isEmpty(tickerText)) {
282                setContentDescription(tickerText);
283            }
284        }
285    }
286
287    public String toString() {
288        return "StatusBarIconView(slot=" + mSlot + " icon=" + mIcon
289            + " notification=" + mNotification + ")";
290    }
291}
292