Eleven: rebrand step 1: update paths

Change-Id: Iab35e4024e20c48e7439e78d1c6efe0ef4f730ca

1 files changed, 72 insertions, 0 deletions

diff --git a/src/org/lineageos/eleven/ui/fragments/FadingBarFragment.java b/src/org/lineageos/eleven/ui/fragments/FadingBarFragment.java
new file mode 100644
index 0000000..81c4009
--- /dev/null
+++ b/src/org/lineageos/eleven/ui/fragments/FadingBarFragment.java
@@ -0,0 +1,72 @@
+/*
+* Copyright (C) 2014 The CyanogenMod 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.cyanogenmod.eleven.ui.fragments;
+
+import android.view.View;
+import android.widget.AbsListView;
+import android.widget.AbsListView.OnScrollListener;
+
+import com.cyanogenmod.eleven.ui.activities.HomeActivity;
+
+public abstract class FadingBarFragment extends DetailFragment implements OnScrollListener {
+    protected static final int ACTION_BAR_DEFAULT_OPACITY = 100;
+
+    @Override
+    public void setupActionBar() {
+        super.setupActionBar();
+
+        getContainingActivity().setActionBarAlpha(ACTION_BAR_DEFAULT_OPACITY);
+        getContainingActivity().setFragmentPadding(false);
+    }
+
+    protected abstract int getHeaderHeight();
+
+    protected abstract void setHeaderPosition(float y);
+
+    @Override // OnScrollListener
+    public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
+        View firstChild = view.getChildAt(0);
+        if (firstChild == null) {
+            return;
+        }
+
+        float firstChildY = firstChild.getY();
+
+        int alpha = 255;
+        if (firstVisibleItem == 0) {
+            // move header to current top of list
+            setHeaderPosition(firstChildY);
+            // calculate alpha for the action bar
+            alpha = ACTION_BAR_DEFAULT_OPACITY +
+                    (int)((255 - ACTION_BAR_DEFAULT_OPACITY) * -firstChildY /
+                            (float)(firstChild.getHeight()));
+            if(alpha > 255) { alpha = 255; }
+        } else {
+            // header off screen
+            setHeaderPosition(-getHeaderHeight());
+        }
+
+        HomeActivity home = getContainingActivity();
+        if (home != null && home.getTopFragment() == this) {
+            home.setActionBarAlpha(alpha);
+        }
+    }
+
+    @Override // OnScrollListener
+    public void onScrollStateChanged(AbsListView view, int scrollState) {
+
+    }
+}