EffectSettingPopup.java revision 892781804513066b68b4a2fa6f846e862dac252a 
1/*
2 * Copyright (C) 2010 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.camera.ui;
18
19import android.content.Context;
20import android.util.AttributeSet;
21import android.util.Log;
22import android.view.View;
23import android.widget.AdapterView;
24import android.widget.GridView;
25import android.widget.SimpleAdapter;
26
27import com.android.camera.IconListPreference;
28import com.android.camera.R;
29
30import java.util.ArrayList;
31import java.util.HashMap;
32
33// A popup window that shows video effect setting. It has two grid view.
34// One shows the goofy face effects. The other shows the background replacer
35// effects.
36public class EffectSettingPopup extends AbstractSettingPopup implements
37        AdapterView.OnItemClickListener, View.OnClickListener {
38    private static final String TAG = "EffectSettingPopup";
39    private String mNoEffect;
40    private IconListPreference mPreference;
41    private Listener mListener;
42    private View mClearEffects;
43    private GridView mSillyFacesGrid;
44    private GridView mBackgroundGrid;
45
46    // Data for silly face items. (text, image, and preference value)
47    ArrayList<HashMap<String, Object>> mSillyFacesItem =
48            new ArrayList<HashMap<String, Object>>();
49
50    // Data for background replacer items. (text, image, and preference value)
51    ArrayList<HashMap<String, Object>> mBackgroundItem =
52            new ArrayList<HashMap<String, Object>>();
53
54
55    static public interface Listener {
56        public void onSettingChanged();
57    }
58
59    public EffectSettingPopup(Context context, AttributeSet attrs) {
60        super(context, attrs);
61        mNoEffect = context.getString(R.string.pref_video_effect_default);
62    }
63
64    @Override
65    protected void onFinishInflate() {
66        super.onFinishInflate();
67        mClearEffects = findViewById(R.id.clear_effects);
68        mClearEffects.setOnClickListener(this);
69        mSillyFacesGrid = (GridView) findViewById(R.id.effect_silly_faces);
70        mBackgroundGrid = (GridView) findViewById(R.id.effect_background);
71    }
72
73    public void initialize(IconListPreference preference) {
74        mPreference = preference;
75        Context context = getContext();
76        CharSequence[] entries = mPreference.getEntries();
77        CharSequence[] entryValues = mPreference.getEntryValues();
78        int[] iconIds = mPreference.getImageIds();
79        if (iconIds == null) {
80            iconIds = mPreference.getLargeIconIds();
81        }
82
83        // Set title.
84        mTitle.setText(mPreference.getTitle());
85
86        for(int i = 0; i < entries.length; ++i) {
87            String value = entryValues[i].toString();
88            if (value.equals(mNoEffect)) continue;  // no effect, skip it.
89            HashMap<String, Object> map = new HashMap<String, Object>();
90            map.put("value", value);
91            map.put("text", entries[i].toString());
92            if (iconIds != null) map.put("image", iconIds[i]);
93            if (value.startsWith("goofy_face")) {
94                mSillyFacesItem.add(map);
95            } else if (value.startsWith("backdropper")) {
96                mBackgroundItem.add(map);
97            }
98        }
99
100        boolean hasSillyFaces = mSillyFacesItem.size() > 0;
101        boolean hasBackground = mBackgroundItem.size() > 0;
102
103        // Initialize goofy face if it is supported.
104        if (hasSillyFaces) {
105            findViewById(R.id.effect_silly_faces_title).setVisibility(View.VISIBLE);
106            findViewById(R.id.effect_silly_faces_title_separator).setVisibility(View.VISIBLE);
107            mSillyFacesGrid.setVisibility(View.VISIBLE);
108            SimpleAdapter sillyFacesItemAdapter = new SimpleAdapter(context,
109                    mSillyFacesItem, R.layout.effect_setting_item,
110                    new String[] {"text", "image"},
111                    new int[] {R.id.text, R.id.image});
112            mSillyFacesGrid.setAdapter(sillyFacesItemAdapter);
113            mSillyFacesGrid.setOnItemClickListener(this);
114        }
115
116        if (hasSillyFaces && hasBackground) {
117            findViewById(R.id.effect_background_separator).setVisibility(View.VISIBLE);
118        }
119
120        // Initialize background replacer if it is supported.
121        if (hasBackground) {
122            findViewById(R.id.effect_background_title).setVisibility(View.VISIBLE);
123            findViewById(R.id.effect_background_title_separator).setVisibility(View.VISIBLE);
124            mBackgroundGrid.setVisibility(View.VISIBLE);
125            SimpleAdapter backgroundItemAdapter = new SimpleAdapter(context,
126                    mBackgroundItem, R.layout.effect_setting_item,
127                    new String[] {"text", "image"},
128                    new int[] {R.id.text, R.id.image});
129            mBackgroundGrid.setAdapter(backgroundItemAdapter);
130            mBackgroundGrid.setOnItemClickListener(this);
131        }
132
133        reloadPreference();
134    }
135
136    @Override
137    public void setVisibility(int visibility) {
138        if (visibility == View.VISIBLE) {
139            if (getVisibility() != View.VISIBLE) {
140                // Do not show or hide "Clear effects" button when the popup
141                // is already visible. Otherwise it looks strange.
142                boolean noEffect = mPreference.getValue().equals(mNoEffect);
143                mClearEffects.setVisibility(noEffect ? View.GONE : View.VISIBLE);
144            }
145            reloadPreference();
146        }
147        super.setVisibility(visibility);
148    }
149
150    // The value of the preference may have changed. Update the UI.
151    @Override
152    public void reloadPreference() {
153        mBackgroundGrid.setItemChecked(mBackgroundGrid.getCheckedItemPosition(), false);
154        mSillyFacesGrid.setItemChecked(mSillyFacesGrid.getCheckedItemPosition(), false);
155
156        String value = mPreference.getValue();
157        if (value.equals(mNoEffect)) return;
158
159        for (int i = 0; i < mSillyFacesItem.size(); i++) {
160            if (value.equals(mSillyFacesItem.get(i).get("value"))) {
161                mSillyFacesGrid.setItemChecked(i, true);
162                return;
163            }
164        }
165
166        for (int i = 0; i < mBackgroundItem.size(); i++) {
167            if (value.equals(mBackgroundItem.get(i).get("value"))) {
168                mBackgroundGrid.setItemChecked(i, true);
169                return;
170            }
171        }
172
173        Log.e(TAG, "Invalid preference value: " + value);
174        mPreference.print();
175    }
176
177    public void setSettingChangedListener(Listener listener) {
178        mListener = listener;
179    }
180
181    @Override
182    public void onItemClick(AdapterView<?> parent, View view,
183            int index, long id) {
184        String value;
185        if (parent == mSillyFacesGrid) {
186            value = (String) mSillyFacesItem.get(index).get("value");
187        } else if (parent == mBackgroundGrid) {
188            value = (String) mBackgroundItem.get(index).get("value");
189        } else {
190            return;
191        }
192
193        // Tapping the selected effect will deselect it (clear effects).
194        if (value.equals(mPreference.getValue())) {
195            mPreference.setValue(mNoEffect);
196        } else {
197            mPreference.setValue(value);
198        }
199        reloadPreference();
200        if (mListener != null) mListener.onSettingChanged();
201    }
202
203    @Override
204    public void onClick(View v) {
205        // Clear the effect.
206        mPreference.setValue(mNoEffect);
207        reloadPreference();
208        if (mListener != null) mListener.onSettingChanged();
209    }
210}
211