summaryrefslogtreecommitdiffstats
path: root/src/com/android/gallery3d/app/FilterUtils.java
diff options
context:
space:
mode:
Diffstat (limited to 'src/com/android/gallery3d/app/FilterUtils.java')
-rw-r--r--src/com/android/gallery3d/app/FilterUtils.java257
1 files changed, 0 insertions, 257 deletions
diff --git a/src/com/android/gallery3d/app/FilterUtils.java b/src/com/android/gallery3d/app/FilterUtils.java
deleted file mode 100644
index bc28a9cc1..000000000
--- a/src/com/android/gallery3d/app/FilterUtils.java
+++ /dev/null
@@ -1,257 +0,0 @@
-/*
- * Copyright (C) 2010 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.gallery3d.app;
-
-import com.android.gallery3d.R;
-import com.android.gallery3d.data.MediaObject;
-import com.android.gallery3d.data.Path;
-
-// This class handles filtering and clustering.
-//
-// We allow at most only one filter operation at a time (Currently it
-// doesn't make sense to use more than one). Also each clustering operation
-// can be applied at most once. In addition, there is one more constraint
-// ("fixed set constraint") described below.
-//
-// A clustered album (not including album set) and its base sets are fixed.
-// For example,
-//
-// /cluster/{base_set}/time/7
-//
-// This set and all sets inside base_set (recursively) are fixed because
-// 1. We can not change this set to use another clustering condition (like
-// changing "time" to "location").
-// 2. Neither can we change any set in the base_set.
-// The reason is in both cases the 7th set may not exist in the new clustering.
-// ---------------------
-// newPath operation: create a new path based on a source path and put an extra
-// condition on top of it:
-//
-// T = newFilterPath(S, filterType);
-// T = newClusterPath(S, clusterType);
-//
-// Similar functions can be used to replace the current condition (if there is one).
-//
-// T = switchFilterPath(S, filterType);
-// T = switchClusterPath(S, clusterType);
-//
-// For all fixed set in the path defined above, if some clusterType and
-// filterType are already used, they cannot not be used as parameter for these
-// functions. setupMenuItems() makes sure those types cannot be selected.
-//
-public class FilterUtils {
- @SuppressWarnings("unused")
- private static final String TAG = "FilterUtils";
-
- public static final int CLUSTER_BY_ALBUM = 1;
- public static final int CLUSTER_BY_TIME = 2;
- public static final int CLUSTER_BY_LOCATION = 4;
- public static final int CLUSTER_BY_TAG = 8;
- public static final int CLUSTER_BY_SIZE = 16;
- public static final int CLUSTER_BY_FACE = 32;
-
- public static final int FILTER_IMAGE_ONLY = 1;
- public static final int FILTER_VIDEO_ONLY = 2;
- public static final int FILTER_ALL = 4;
-
- // These are indices of the return values of getAppliedFilters().
- // The _F suffix means "fixed".
- private static final int CLUSTER_TYPE = 0;
- private static final int FILTER_TYPE = 1;
- private static final int CLUSTER_TYPE_F = 2;
- private static final int FILTER_TYPE_F = 3;
- private static final int CLUSTER_CURRENT_TYPE = 4;
- private static final int FILTER_CURRENT_TYPE = 5;
-
- public static void setupMenuItems(GalleryActionBar actionBar, Path path, boolean inAlbum) {
- int[] result = new int[6];
- getAppliedFilters(path, result);
- int ctype = result[CLUSTER_TYPE];
- int ftype = result[FILTER_TYPE];
- int ftypef = result[FILTER_TYPE_F];
- int ccurrent = result[CLUSTER_CURRENT_TYPE];
- int fcurrent = result[FILTER_CURRENT_TYPE];
-
- setMenuItemApplied(actionBar, CLUSTER_BY_TIME,
- (ctype & CLUSTER_BY_TIME) != 0, (ccurrent & CLUSTER_BY_TIME) != 0);
- setMenuItemApplied(actionBar, CLUSTER_BY_LOCATION,
- (ctype & CLUSTER_BY_LOCATION) != 0, (ccurrent & CLUSTER_BY_LOCATION) != 0);
- setMenuItemApplied(actionBar, CLUSTER_BY_TAG,
- (ctype & CLUSTER_BY_TAG) != 0, (ccurrent & CLUSTER_BY_TAG) != 0);
- setMenuItemApplied(actionBar, CLUSTER_BY_FACE,
- (ctype & CLUSTER_BY_FACE) != 0, (ccurrent & CLUSTER_BY_FACE) != 0);
-
- actionBar.setClusterItemVisibility(CLUSTER_BY_ALBUM, !inAlbum || ctype == 0);
-
- setMenuItemApplied(actionBar, R.id.action_cluster_album, ctype == 0,
- ccurrent == 0);
-
- // A filtering is available if it's not applied, and the old filtering
- // (if any) is not fixed.
- setMenuItemAppliedEnabled(actionBar, R.string.show_images_only,
- (ftype & FILTER_IMAGE_ONLY) != 0,
- (ftype & FILTER_IMAGE_ONLY) == 0 && ftypef == 0,
- (fcurrent & FILTER_IMAGE_ONLY) != 0);
- setMenuItemAppliedEnabled(actionBar, R.string.show_videos_only,
- (ftype & FILTER_VIDEO_ONLY) != 0,
- (ftype & FILTER_VIDEO_ONLY) == 0 && ftypef == 0,
- (fcurrent & FILTER_VIDEO_ONLY) != 0);
- setMenuItemAppliedEnabled(actionBar, R.string.show_all,
- ftype == 0, ftype != 0 && ftypef == 0, fcurrent == 0);
- }
-
- // Gets the filters applied in the path.
- private static void getAppliedFilters(Path path, int[] result) {
- getAppliedFilters(path, result, false);
- }
-
- private static void getAppliedFilters(Path path, int[] result, boolean underCluster) {
- String[] segments = path.split();
- // Recurse into sub media sets.
- for (int i = 0; i < segments.length; i++) {
- if (segments[i].startsWith("{")) {
- String[] sets = Path.splitSequence(segments[i]);
- for (int j = 0; j < sets.length; j++) {
- Path sub = Path.fromString(sets[j]);
- getAppliedFilters(sub, result, underCluster);
- }
- }
- }
-
- // update current selection
- if (segments[0].equals("cluster")) {
- // if this is a clustered album, set underCluster to true.
- if (segments.length == 4) {
- underCluster = true;
- }
-
- int ctype = toClusterType(segments[2]);
- result[CLUSTER_TYPE] |= ctype;
- result[CLUSTER_CURRENT_TYPE] = ctype;
- if (underCluster) {
- result[CLUSTER_TYPE_F] |= ctype;
- }
- }
- }
-
- private static int toClusterType(String s) {
- if (s.equals("time")) {
- return CLUSTER_BY_TIME;
- } else if (s.equals("location")) {
- return CLUSTER_BY_LOCATION;
- } else if (s.equals("tag")) {
- return CLUSTER_BY_TAG;
- } else if (s.equals("size")) {
- return CLUSTER_BY_SIZE;
- } else if (s.equals("face")) {
- return CLUSTER_BY_FACE;
- }
- return 0;
- }
-
- private static void setMenuItemApplied(
- GalleryActionBar model, int id, boolean applied, boolean updateTitle) {
- model.setClusterItemEnabled(id, !applied);
- }
-
- private static void setMenuItemAppliedEnabled(GalleryActionBar model, int id, boolean applied, boolean enabled, boolean updateTitle) {
- model.setClusterItemEnabled(id, enabled);
- }
-
- // Add a specified filter to the path.
- public static String newFilterPath(String base, int filterType) {
- int mediaType;
- switch (filterType) {
- case FILTER_IMAGE_ONLY:
- mediaType = MediaObject.MEDIA_TYPE_IMAGE;
- break;
- case FILTER_VIDEO_ONLY:
- mediaType = MediaObject.MEDIA_TYPE_VIDEO;
- break;
- default: /* FILTER_ALL */
- return base;
- }
-
- return "/filter/mediatype/" + mediaType + "/{" + base + "}";
- }
-
- // Add a specified clustering to the path.
- public static String newClusterPath(String base, int clusterType) {
- String kind;
- switch (clusterType) {
- case CLUSTER_BY_TIME:
- kind = "time";
- break;
- case CLUSTER_BY_LOCATION:
- kind = "location";
- break;
- case CLUSTER_BY_TAG:
- kind = "tag";
- break;
- case CLUSTER_BY_SIZE:
- kind = "size";
- break;
- case CLUSTER_BY_FACE:
- kind = "face";
- break;
- default: /* CLUSTER_BY_ALBUM */
- return base;
- }
-
- return "/cluster/{" + base + "}/" + kind;
- }
-
- // Change the topmost clustering to the specified type.
- public static String switchClusterPath(String base, int clusterType) {
- return newClusterPath(removeOneClusterFromPath(base), clusterType);
- }
-
- // Remove the topmost clustering (if any) from the path.
- private static String removeOneClusterFromPath(String base) {
- boolean[] done = new boolean[1];
- return removeOneClusterFromPath(base, done);
- }
-
- private static String removeOneClusterFromPath(String base, boolean[] done) {
- if (done[0]) return base;
-
- String[] segments = Path.split(base);
- if (segments[0].equals("cluster")) {
- done[0] = true;
- return Path.splitSequence(segments[1])[0];
- }
-
- StringBuilder sb = new StringBuilder();
- for (int i = 0; i < segments.length; i++) {
- sb.append("/");
- if (segments[i].startsWith("{")) {
- sb.append("{");
- String[] sets = Path.splitSequence(segments[i]);
- for (int j = 0; j < sets.length; j++) {
- if (j > 0) {
- sb.append(",");
- }
- sb.append(removeOneClusterFromPath(sets[j], done));
- }
- sb.append("}");
- } else {
- sb.append(segments[i]);
- }
- }
- return sb.toString();
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-16 21:34:09 +0000