Allow tapping on the edges of the chapter to change pages

app/src/main/java/eu/kanade/mangafeed/ui/activity/ReaderActivity.java

@@ -18,12 +18,13 @@ import eu.kanade.mangafeed.data.models.Page;
 import eu.kanade.mangafeed.presenter.ReaderPresenter;
 import eu.kanade.mangafeed.ui.activity.base.BaseRxActivity;
 import eu.kanade.mangafeed.ui.adapter.ReaderPageAdapter;
+import eu.kanade.mangafeed.widget.ReaderViewPager;
 import nucleus.factory.RequiresPresenter;
 
 @RequiresPresenter(ReaderPresenter.class)
 public class ReaderActivity extends BaseRxActivity<ReaderPresenter> {
 
-    @Bind(R.id.view_pager) ViewPager viewPager;
+    @Bind(R.id.view_pager) ReaderViewPager viewPager;
     @Bind(R.id.page_number) TextView pageNumber;
 
     private ReaderPageAdapter adapter;
@@ -43,6 +44,12 @@ public class ReaderActivity extends BaseRxActivity<ReaderPresenter> {
         setupViewPager();
     }
 
+    @Override
+    public void onDestroy() {
+        getPresenter().setCurrentPage(currentPage);
+        super.onDestroy();
+    }
+
     private void createAdapter() {
         adapter = new ReaderPageAdapter(getSupportFragmentManager());
         viewPager.setAdapter(adapter);
@@ -67,14 +74,24 @@ public class ReaderActivity extends BaseRxActivity<ReaderPresenter> {
 
             }
         });
+        viewPager.setOnChapterBoundariesOutListener(new ReaderViewPager.OnChapterBoundariesOutListener() {
+            @Override
+            public void onFirstPageOut() {
+                // TODO load previous chapter
+            }
+
+            @Override
+            public void onLastPageOut() {
+                // TODO load next chapter
+            }
+        });
     }
 
-    @Override
-    public void onDestroy() {
-        getPresenter().setCurrentPage(currentPage);
-        super.onDestroy();
+    public ReaderViewPager getViewPager() {
+        return viewPager;
     }
 
+
     public void onPageList(List<Page> pages) {
         adapter.setPages(pages);
         updatePageNumber();
@@ -104,4 +121,5 @@ public class ReaderActivity extends BaseRxActivity<ReaderPresenter> {
         }
 
     }
+
 }

app/src/main/java/eu/kanade/mangafeed/ui/fragment/ReaderPageFragment.java

@@ -12,12 +12,13 @@ import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView;
 
 import eu.kanade.mangafeed.R;
 import eu.kanade.mangafeed.data.models.Page;
+import eu.kanade.mangafeed.ui.activity.ReaderActivity;
 import eu.kanade.mangafeed.util.PageFileTarget;
 
 public class ReaderPageFragment extends Fragment {
     public static final String URL_ARGUMENT_KEY = "UrlArgumentKey";
 
-    private SubsamplingScaleImageView mPageImageView;
+    private SubsamplingScaleImageView imageView;
 
     private String mUrl;
 
@@ -53,19 +54,21 @@ public class ReaderPageFragment extends Fragment {
     private void loadImage() {
         Glide.with(getActivity())
                 .load(mUrl)
-                .downloadOnly(new PageFileTarget(mPageImageView));
+                .downloadOnly(new PageFileTarget(imageView));
     }
 
     @Override
     public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
-        mPageImageView = (SubsamplingScaleImageView)inflater.inflate(R.layout.fragment_page, container, false);
-        mPageImageView.setDoubleTapZoomStyle(SubsamplingScaleImageView.ZOOM_FOCUS_FIXED);
-        mPageImageView.setPanLimit(SubsamplingScaleImageView.PAN_LIMIT_INSIDE);
-        mPageImageView.setMinimumScaleType(SubsamplingScaleImageView.SCALE_TYPE_CENTER_INSIDE);
-        mPageImageView.setOnImageEventListener(new SubsamplingScaleImageView.OnImageEventListener() {
+        imageView = (SubsamplingScaleImageView)inflater.inflate(R.layout.fragment_page, container, false);
+        imageView.setDoubleTapZoomStyle(SubsamplingScaleImageView.ZOOM_FOCUS_FIXED);
+        imageView.setPanLimit(SubsamplingScaleImageView.PAN_LIMIT_INSIDE);
+        imageView.setMinimumScaleType(SubsamplingScaleImageView.SCALE_TYPE_CENTER_INSIDE);
+        imageView.setOnTouchListener((view, motionEvent) ->
+                ((ReaderActivity) getActivity()).getViewPager().onImageTouch(motionEvent));
+        imageView.setOnImageEventListener(new SubsamplingScaleImageView.OnImageEventListener() {
             @Override
             public void onReady() {
-                mPageImageView.setVisibility(View.VISIBLE);
+                imageView.setVisibility(View.VISIBLE);
             }
 
             @Override
@@ -85,7 +88,7 @@ public class ReaderPageFragment extends Fragment {
             }
         });
 
-        return mPageImageView;
+        return imageView;
     }
 
     @Override
@@ -93,4 +96,5 @@ public class ReaderPageFragment extends Fragment {
         super.onActivityCreated(savedInstanceState);
         loadImage();
     }
+
 }