StatusBarIconView.java revision 7579bca7a02477353700d3b716f172b4fab267c0 
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.text.TextUtils;
28import android.util.Slog;
29import android.util.Log;
30import android.view.ViewDebug;
31import android.view.accessibility.AccessibilityEvent;
32
33import java.text.NumberFormat;
34
35import com.android.internal.statusbar.StatusBarIcon;
36
37import com.android.systemui.R;
38
39public class StatusBarIconView extends AnimatedImageView {
40    private static final String TAG = "StatusBarIconView";
41
42    private StatusBarIcon mIcon;
43    @ViewDebug.ExportedProperty private String mSlot;
44    private Drawable mNumberBackground;
45    private Paint mNumberPain;
46    private int mNumberX;
47    private int mNumberY;
48    private String mNumberText;
49    private Notification mNotification;
50
51    public StatusBarIconView(Context context, String slot, Notification notification) {
52        super(context);
53        final Resources res = context.getResources();
54        mSlot = slot;
55        mNumberPain = new Paint();
56        mNumberPain.setTextAlign(Paint.Align.CENTER);
57        mNumberPain.setColor(res.getColor(R.drawable.notification_number_text_color));
58        mNumberPain.setAntiAlias(true);
59        mNotification = notification;
60        setContentDescription(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            final float alpha = res.getFraction(R.dimen.status_bar_icon_drawing_alpha, 1, 1);
71            setAlpha(alpha);
72        }
73    }
74
75    private static boolean streq(String a, String b) {
76        if (a == b) {
77            return true;
78        }
79        if (a == null && b != null) {
80            return false;
81        }
82        if (a != null && b == null) {
83            return false;
84        }
85        return a.equals(b);
86    }
87
88    /**
89     * Returns whether the set succeeded.
90     */
91    public boolean set(StatusBarIcon icon) {
92        final boolean iconEquals = mIcon != null
93                && streq(mIcon.iconPackage, icon.iconPackage)
94                && mIcon.iconId == icon.iconId;
95        final boolean levelEquals = iconEquals
96                && mIcon.iconLevel == icon.iconLevel;
97        final boolean visibilityEquals = mIcon != null
98                && mIcon.visible == icon.visible;
99        final boolean numberEquals = mIcon != null
100                && mIcon.number == icon.number;
101        mIcon = icon.clone();
102        setContentDescription(icon.contentDescription);
103        if (!iconEquals) {
104            Drawable drawable = getIcon(icon);
105            if (drawable == null) {
106                Slog.w(StatusBar.TAG, "No icon for slot " + mSlot);
107                return false;
108            }
109            setImageDrawable(drawable);
110        }
111        if (!levelEquals) {
112            setImageLevel(icon.iconLevel);
113        }
114
115        if (!numberEquals) {
116            if (icon.number > 0 && mContext.getResources().getBoolean(
117                        R.bool.config_statusBarShowNumber)) {
118                if (mNumberBackground == null) {
119                    mNumberBackground = getContext().getResources().getDrawable(
120                            R.drawable.ic_notification_overlay);
121                }
122                placeNumber();
123            } else {
124                mNumberBackground = null;
125                mNumberText = null;
126            }
127            invalidate();
128        }
129        if (!visibilityEquals) {
130            setVisibility(icon.visible ? VISIBLE : GONE);
131        }
132        return true;
133    }
134
135    private Drawable getIcon(StatusBarIcon icon) {
136        return getIcon(getContext(), icon);
137    }
138
139    /**
140     * Returns the right icon to use for this item, respecting the iconId and
141     * iconPackage (if set)
142     *
143     * @param context Context to use to get resources if iconPackage is not set
144     * @return Drawable for this item, or null if the package or item could not
145     *         be found
146     */
147    public static Drawable getIcon(Context context, StatusBarIcon icon) {
148        Resources r = null;
149
150        if (icon.iconPackage != null) {
151            try {
152                r = context.getPackageManager().getResourcesForApplication(icon.iconPackage);
153            } catch (PackageManager.NameNotFoundException ex) {
154                Slog.e(StatusBar.TAG, "Icon package not found: " + icon.iconPackage);
155                return null;
156            }
157        } else {
158            r = context.getResources();
159        }
160
161        if (icon.iconId == 0) {
162            return null;
163        }
164
165        try {
166            return r.getDrawable(icon.iconId);
167        } catch (RuntimeException e) {
168            Slog.w(StatusBar.TAG, "Icon not found in "
169                  + (icon.iconPackage != null ? icon.iconId : "<system>")
170                  + ": " + Integer.toHexString(icon.iconId));
171        }
172
173        return null;
174    }
175
176    public StatusBarIcon getStatusBarIcon() {
177        return mIcon;
178    }
179
180    @Override
181    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
182        super.onInitializeAccessibilityEvent(event);
183        if (mNotification != null) {
184            event.setParcelableData(mNotification);
185        }
186    }
187
188    @Override
189    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
190        super.onSizeChanged(w, h, oldw, oldh);
191        if (mNumberBackground != null) {
192            placeNumber();
193        }
194    }
195
196    @Override
197    protected void onDraw(Canvas canvas) {
198        super.onDraw(canvas);
199
200        if (mNumberBackground != null) {
201            mNumberBackground.draw(canvas);
202            canvas.drawText(mNumberText, mNumberX, mNumberY, mNumberPain);
203        }
204    }
205
206    @Override
207    protected void debug(int depth) {
208        super.debug(depth);
209        Log.d("View", debugIndent(depth) + "slot=" + mSlot);
210        Log.d("View", debugIndent(depth) + "icon=" + mIcon);
211    }
212
213    void placeNumber() {
214        final String str;
215        final int tooBig = mContext.getResources().getInteger(
216                android.R.integer.status_bar_notification_info_maxnum);
217        if (mIcon.number > tooBig) {
218            str = mContext.getResources().getString(
219                        android.R.string.status_bar_notification_info_overflow);
220        } else {
221            NumberFormat f = NumberFormat.getIntegerInstance();
222            str = f.format(mIcon.number);
223        }
224        mNumberText = str;
225
226        final int w = getWidth();
227        final int h = getHeight();
228        final Rect r = new Rect();
229        mNumberPain.getTextBounds(str, 0, str.length(), r);
230        final int tw = r.right - r.left;
231        final int th = r.bottom - r.top;
232        mNumberBackground.getPadding(r);
233        int dw = r.left + tw + r.right;
234        if (dw < mNumberBackground.getMinimumWidth()) {
235            dw = mNumberBackground.getMinimumWidth();
236        }
237        mNumberX = w-r.right-((dw-r.right-r.left)/2);
238        int dh = r.top + th + r.bottom;
239        if (dh < mNumberBackground.getMinimumWidth()) {
240            dh = mNumberBackground.getMinimumWidth();
241        }
242        mNumberY = h-r.bottom-((dh-r.top-th-r.bottom)/2);
243        mNumberBackground.setBounds(w-dw, h-dh, w, h);
244    }
245
246    private void setContentDescription(Notification notification) {
247        if (notification != null) {
248            CharSequence tickerText = notification.tickerText;
249            if (!TextUtils.isEmpty(tickerText)) {
250                setContentDescription(tickerText);
251            }
252        }
253    }
254
255    public String toString() {
256        return "StatusBarIconView(slot=" + mSlot + " icon=" + mIcon
257            + " notification=" + mNotification + ")";
258    }
259}
260