ManageCacheDrawer.java revision 915c2c5b2c367df71599370613af0924bd7c4887 
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.gallery3d.ui;
18
19import android.content.Context;
20
21import com.android.gallery3d.R;
22import com.android.gallery3d.app.GalleryActivity;
23import com.android.gallery3d.data.DataSourceType;
24import com.android.gallery3d.data.MediaSet;
25import com.android.gallery3d.data.Path;
26import com.android.gallery3d.ui.AlbumSetSlidingWindow.AlbumSetEntry;
27
28public class ManageCacheDrawer extends AlbumSetSlotRenderer {
29    private final ResourceTexture mCheckedItem;
30    private final ResourceTexture mUnCheckedItem;
31    private final SelectionManager mSelectionManager;
32
33    private final ResourceTexture mLocalAlbumIcon;
34    private final StringTexture mCachingText;
35
36    private final int mCachePinSize;
37    private final int mCachePinMargin;
38
39    public ManageCacheDrawer(GalleryActivity activity, SelectionManager selectionManager,
40            SlotView slotView, LabelSpec labelSpec, int cachePinSize, int cachePinMargin) {
41        super(activity, selectionManager, slotView, labelSpec,
42                activity.getResources().getColor(R.color.cache_placeholder));
43        Context context = (Context) activity;
44        mCheckedItem = new ResourceTexture(
45                context, R.drawable.btn_make_offline_normal_on_holo_dark);
46        mUnCheckedItem = new ResourceTexture(
47                context, R.drawable.btn_make_offline_normal_off_holo_dark);
48        mLocalAlbumIcon = new ResourceTexture(
49                context, R.drawable.btn_make_offline_disabled_on_holo_dark);
50        String cachingLabel = context.getString(R.string.caching_label);
51        mCachingText = StringTexture.newInstance(cachingLabel, 12, 0xffffffff);
52        mSelectionManager = selectionManager;
53        mCachePinSize = cachePinSize;
54        mCachePinMargin = cachePinMargin;
55    }
56
57    private static boolean isLocal(int dataSourceType) {
58        return dataSourceType != DataSourceType.TYPE_PICASA;
59    }
60
61    @Override
62    public int renderSlot(GLCanvas canvas, int index, int pass, int width, int height) {
63        AlbumSetEntry entry = mDataWindow.get(index);
64
65        boolean wantCache = entry.cacheFlag == MediaSet.CACHE_FLAG_FULL;
66        boolean isCaching = wantCache && (
67                entry.cacheStatus != MediaSet.CACHE_STATUS_CACHED_FULL);
68        boolean selected = mSelectionManager.isItemSelected(entry.setPath);
69        boolean chooseToCache = wantCache ^ selected;
70        boolean available = isLocal(entry.sourceType) || chooseToCache;
71
72        int renderRequestFlags = 0;
73
74        if (!available) {
75            canvas.save(GLCanvas.SAVE_FLAG_ALPHA);
76            canvas.multiplyAlpha(0.6f);
77        }
78        renderRequestFlags |= renderContent(canvas, entry, width, height);
79        if (!available) canvas.restore();
80
81        renderRequestFlags |= renderLabel(canvas, entry, width, height);
82
83        drawCachingPin(canvas, entry.setPath,
84                entry.sourceType, isCaching, chooseToCache, width, height);
85
86        renderRequestFlags |= renderOverlay(canvas, index, entry, width, height);
87        return renderRequestFlags;
88    }
89
90    private void drawCachingPin(GLCanvas canvas, Path path, int dataSourceType,
91            boolean isCaching, boolean chooseToCache, int width, int height) {
92        ResourceTexture icon;
93        if (isLocal(dataSourceType)) {
94            icon = mLocalAlbumIcon;
95        } else if (chooseToCache) {
96            icon = mCheckedItem;
97        } else {
98            icon = mUnCheckedItem;
99        }
100
101        // show the icon in right bottom
102        int s = mCachePinSize;
103        int m = mCachePinMargin;
104        icon.draw(canvas, width - m - s, height - s, s, s);
105
106        if (isCaching) {
107            int w = mCachingText.getWidth();
108            int h = mCachingText.getHeight();
109            // Show the caching text in bottom center
110            mCachingText.draw(canvas, (width - w) / 2, height - h);
111        }
112    }
113}
114