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            if (!updateDrawable(false /* no clear */)) return false;
122        }
123        if (!levelEquals) {
124            setImageLevel(icon.iconLevel);
125        }
126
127        if (!numberEquals) {
128            if (icon.number > 0 && mContext.getResources().getBoolean(
129                        R.bool.config_statusBarShowNumber)) {
130                if (mNumberBackground == null) {
131                    mNumberBackground = getContext().getResources().getDrawable(
132                            R.drawable.ic_notification_overlay);
133                }
134                placeNumber();
135            } else {
136                mNumberBackground = null;
137                mNumberText = null;
138            }
139            invalidate();
140        }
141        if (!visibilityEquals) {
142            setVisibility(icon.visible ? VISIBLE : GONE);
143        }
144        return true;
145    }
146
147    public void updateDrawable() {
148        updateDrawable(true /* with clear */);
149    }
150
151    private boolean updateDrawable(boolean withClear) {
152        Drawable drawable = getIcon(mIcon);
153        if (drawable == null) {
154            Slog.w(TAG, "No icon for slot " + mSlot);
155            return false;
156        }
157        if (withClear) {
158            setImageDrawable(null);
159        }
160        setImageDrawable(drawable);
161        return true;
162    }
163
164    private Drawable getIcon(StatusBarIcon icon) {
165        return getIcon(getContext(), icon);
166    }
167
168    /**
169     * Returns the right icon to use for this item, respecting the iconId and
170     * iconPackage (if set)
171     *
172     * @param context Context to use to get resources if iconPackage is not set
173     * @return Drawable for this item, or null if the package or item could not
174     *         be found
175     */
176    public static Drawable getIcon(Context context, StatusBarIcon icon) {
177        Resources r = null;
178
179        if (icon.iconPackage != null) {
180            try {
181                int userId = icon.user.getIdentifier();
182                if (userId == UserHandle.USER_ALL) {
183                    userId = UserHandle.USER_OWNER;
184                }
185                r = context.getPackageManager()
186                        .getResourcesForApplicationAsUser(icon.iconPackage, userId);
187            } catch (PackageManager.NameNotFoundException ex) {
188                Slog.e(TAG, "Icon package not found: " + icon.iconPackage);
189                return null;
190            }
191        } else {
192            r = context.getResources();
193        }
194
195        if (icon.iconId == 0) {
196            return null;
197        }
198
199        try {
200            return r.getDrawable(icon.iconId);
201        } catch (RuntimeException e) {
202            Slog.w(TAG, "Icon not found in "
203                  + (icon.iconPackage != null ? icon.iconId : "<system>")
204                  + ": " + Integer.toHexString(icon.iconId));
205        }
206
207        return null;
208    }
209
210    public StatusBarIcon getStatusBarIcon() {
211        return mIcon;
212    }
213
214    @Override
215    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
216        super.onInitializeAccessibilityEvent(event);
217        if (mNotification != null) {
218            event.setParcelableData(mNotification);
219        }
220    }
221
222    @Override
223    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
224        super.onSizeChanged(w, h, oldw, oldh);
225        if (mNumberBackground != null) {
226            placeNumber();
227        }
228    }
229
230    @Override
231    protected void onDraw(Canvas canvas) {
232        super.onDraw(canvas);
233
234        if (mNumberBackground != null) {
235            mNumberBackground.draw(canvas);
236            canvas.drawText(mNumberText, mNumberX, mNumberY, mNumberPain);
237        }
238    }
239
240    @Override
241    protected void debug(int depth) {
242        super.debug(depth);
243        Log.d("View", debugIndent(depth) + "slot=" + mSlot);
244        Log.d("View", debugIndent(depth) + "icon=" + mIcon);
245    }
246
247    void placeNumber() {
248        final String str;
249        final int tooBig = mContext.getResources().getInteger(
250                android.R.integer.status_bar_notification_info_maxnum);
251        if (mIcon.number > tooBig) {
252            str = mContext.getResources().getString(
253                        android.R.string.status_bar_notification_info_overflow);
254        } else {
255            NumberFormat f = NumberFormat.getIntegerInstance();
256            str = f.format(mIcon.number);
257        }
258        mNumberText = str;
259
260        final int w = getWidth();
261        final int h = getHeight();
262        final Rect r = new Rect();
263        mNumberPain.getTextBounds(str, 0, str.length(), r);
264        final int tw = r.right - r.left;
265        final int th = r.bottom - r.top;
266        mNumberBackground.getPadding(r);
267        int dw = r.left + tw + r.right;
268        if (dw < mNumberBackground.getMinimumWidth()) {
269            dw = mNumberBackground.getMinimumWidth();
270        }
271        mNumberX = w-r.right-((dw-r.right-r.left)/2);
272        int dh = r.top + th + r.bottom;
273        if (dh < mNumberBackground.getMinimumWidth()) {
274            dh = mNumberBackground.getMinimumWidth();
275        }
276        mNumberY = h-r.bottom-((dh-r.top-th-r.bottom)/2);
277        mNumberBackground.setBounds(w-dw, h-dh, w, h);
278    }
279
280    private void setContentDescription(Notification notification) {
281        if (notification != null) {
282            CharSequence tickerText = notification.tickerText;
283            if (!TextUtils.isEmpty(tickerText)) {
284                setContentDescription(tickerText);
285            }
286        }
287    }
288
289    public String toString() {
290        return "StatusBarIconView(slot=" + mSlot + " icon=" + mIcon
291            + " notification=" + mNotification + ")";
292    }
293}
294