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      1 /*
      2  * Copyright (C) 2012 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 package com.android.gallery3d.app;
     17 
     18 import android.graphics.Rect;
     19 import android.os.Parcel;
     20 import android.os.Parcelable;
     21 
     22 import com.android.gallery3d.ui.ScreenNail;
     23 
     24 // This is the bridge to connect a PhotoPage to the external environment.
     25 public abstract class AppBridge implements Parcelable {
     26     public int describeContents() {
     27         return 0;
     28     }
     29 
     30     public void writeToParcel(Parcel dest, int flags) {
     31     }
     32 
     33     //////////////////////////////////////////////////////////////////////////
     34     //  These are requests sent from PhotoPage to the app
     35     //////////////////////////////////////////////////////////////////////////
     36 
     37     public abstract boolean isPanorama();
     38     public abstract ScreenNail attachScreenNail();
     39     public abstract void detachScreenNail();
     40 
     41     // Return true if the tap is consumed.
     42     public abstract boolean onSingleTapUp(int x, int y);
     43 
     44     // This is used to notify that the screen nail will be drawn in full screen
     45     // or not in next draw() call.
     46     public abstract void onFullScreenChanged(boolean full);
     47 
     48     //////////////////////////////////////////////////////////////////////////
     49     //  These are requests send from app to PhotoPage
     50     //////////////////////////////////////////////////////////////////////////
     51 
     52     public interface Server {
     53         // Set the camera frame relative to GLRootView.
     54         public void setCameraRelativeFrame(Rect frame);
     55         // Switch to the previous or next picture using the capture animation.
     56         // The offset is -1 to switch to the previous picture, 1 to switch to
     57         // the next picture.
     58         public boolean switchWithCaptureAnimation(int offset);
     59         // Enable or disable the swiping gestures (the default is enabled).
     60         public void setSwipingEnabled(boolean enabled);
     61         // Notify that the ScreenNail is changed.
     62         public void notifyScreenNailChanged();
     63     }
     64 
     65     // If server is null, the services are not available.
     66     public abstract void setServer(Server server);
     67 }
     68