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.content.Context;
20import android.content.pm.PackageManager;
21import android.content.res.Resources;
22import android.graphics.drawable.Drawable;
23import android.graphics.Canvas;
24import android.graphics.Paint;
25import android.graphics.Rect;
26import android.util.Slog;
27import android.util.Log;
28import android.view.View;
29import android.view.ViewDebug;
30import android.widget.FrameLayout;
31
32import com.android.internal.statusbar.StatusBarIcon;
33
34import com.android.systemui.R;
35
36public class StatusBarIconView extends AnimatedImageView {
37    private static final String TAG = "StatusBarIconView";
38
39    private StatusBarIcon mIcon;
40    @ViewDebug.ExportedProperty private String mSlot;
41    private Drawable mNumberBackground;
42    private Paint mNumberPain;
43    private int mNumberX;
44    private int mNumberY;
45    private String mNumberText;
46
47    public StatusBarIconView(Context context, String slot) {
48        super(context);
49        final Resources res = context.getResources();
50        mSlot = slot;
51        mNumberPain = new Paint();
52        mNumberPain.setTextAlign(Paint.Align.CENTER);
53        mNumberPain.setColor(res.getColor(R.drawable.notification_number_text_color));
54        mNumberPain.setAntiAlias(true);
55    }
56
57    private static boolean streq(String a, String b) {
58        if (a == b) {
59            return true;
60        }
61        if (a == null && b != null) {
62            return false;
63        }
64        if (a != null && b == null) {
65            return false;
66        }
67        return a.equals(b);
68    }
69
70    /**
71     * Returns whether the set succeeded.
72     */
73    public boolean set(StatusBarIcon icon) {
74        final boolean iconEquals = mIcon != null
75                && streq(mIcon.iconPackage, icon.iconPackage)
76                && mIcon.iconId == icon.iconId;
77        final boolean levelEquals = iconEquals
78                && mIcon.iconLevel == icon.iconLevel;
79        final boolean visibilityEquals = mIcon != null
80                && mIcon.visible == icon.visible;
81        final boolean numberEquals = mIcon != null
82                && mIcon.number == icon.number;
83        mIcon = icon.clone();
84        if (!iconEquals) {
85            Drawable drawable = getIcon(icon);
86            if (drawable == null) {
87                Slog.w(StatusBarService.TAG, "No icon for slot " + mSlot);
88                return false;
89            }
90            setImageDrawable(drawable);
91        }
92        if (!levelEquals) {
93            setImageLevel(icon.iconLevel);
94        }
95        if (!numberEquals) {
96            if (icon.number > 0) {
97                if (mNumberBackground == null) {
98                    mNumberBackground = getContext().getResources().getDrawable(
99                            R.drawable.ic_notification_overlay);
100                }
101                placeNumber();
102            } else {
103                mNumberBackground = null;
104                mNumberText = null;
105            }
106            invalidate();
107        }
108        if (!visibilityEquals) {
109            setVisibility(icon.visible ? VISIBLE : GONE);
110        }
111        return true;
112    }
113
114    private Drawable getIcon(StatusBarIcon icon) {
115        return getIcon(getContext(), icon);
116    }
117
118    /**
119     * Returns the right icon to use for this item, respecting the iconId and
120     * iconPackage (if set)
121     *
122     * @param context Context to use to get resources if iconPackage is not set
123     * @return Drawable for this item, or null if the package or item could not
124     *         be found
125     */
126    public static Drawable getIcon(Context context, StatusBarIcon icon) {
127        Resources r = null;
128
129        if (icon.iconPackage != null) {
130            try {
131                r = context.getPackageManager().getResourcesForApplication(icon.iconPackage);
132            } catch (PackageManager.NameNotFoundException ex) {
133                Slog.e(StatusBarService.TAG, "Icon package not found: " + icon.iconPackage);
134                return null;
135            }
136        } else {
137            r = context.getResources();
138        }
139
140        if (icon.iconId == 0) {
141            return null;
142        }
143
144        try {
145            return r.getDrawable(icon.iconId);
146        } catch (RuntimeException e) {
147            Slog.w(StatusBarService.TAG, "Icon not found in "
148                  + (icon.iconPackage != null ? icon.iconId : "<system>")
149                  + ": " + Integer.toHexString(icon.iconId));
150        }
151
152        return null;
153    }
154
155    public StatusBarIcon getStatusBarIcon() {
156        return mIcon;
157    }
158
159    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
160        super.onSizeChanged(w, h, oldw, oldh);
161        if (mNumberBackground != null) {
162            placeNumber();
163        }
164    }
165
166    protected void onDraw(Canvas canvas) {
167        super.onDraw(canvas);
168
169        if (mNumberBackground != null) {
170            mNumberBackground.draw(canvas);
171            canvas.drawText(mNumberText, mNumberX, mNumberY, mNumberPain);
172        }
173    }
174
175    protected void debug(int depth) {
176        super.debug(depth);
177        Log.d("View", debugIndent(depth) + "slot=" + mSlot);
178        Log.d("View", debugIndent(depth) + "icon=" + mIcon);
179    }
180
181    void placeNumber() {
182        final String str = mNumberText = Integer.toString(mIcon.number);
183        final int w = getWidth();
184        final int h = getHeight();
185        final Rect r = new Rect();
186        mNumberPain.getTextBounds(str, 0, str.length(), r);
187        final int tw = r.right - r.left;
188        final int th = r.bottom - r.top;
189        mNumberBackground.getPadding(r);
190        int dw = r.left + tw + r.right;
191        if (dw < mNumberBackground.getMinimumWidth()) {
192            dw = mNumberBackground.getMinimumWidth();
193        }
194        mNumberX = w-r.right-((dw-r.right-r.left)/2);
195        int dh = r.top + th + r.bottom;
196        if (dh < mNumberBackground.getMinimumWidth()) {
197            dh = mNumberBackground.getMinimumWidth();
198        }
199        mNumberY = h-r.bottom-((dh-r.top-th-r.bottom)/2);
200        mNumberBackground.setBounds(w-dw, h-dh, w, h);
201    }
202}
203