1 files changed, 96 insertions, 0 deletions
diff --git a/src/org/cyanogenmod/theme/util/ChooserDetailScrollView.java b/src/org/cyanogenmod/theme/util/ChooserDetailScrollView.java
new file mode 100644
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--- /dev/null
+++ b/src/org/cyanogenmod/theme/util/ChooserDetailScrollView.java
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+/*
+ * 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 org.cyanogenmod.theme.util;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.GestureDetector;
+import android.view.MotionEvent;
+import android.view.View;
+import android.widget.ScrollView;
+
+/**
+ * A custom ScrollView capable of alerting its children when a scroll has changed.
+ *
+ * This custom view will also measure its children differently. Normally a child in scrollview
+ * receives an UNSPECIFIED MeasureSpec so that the child will size itself as large as it needs to be.
+ *
+ * In our case we want to have a unique layout where the first full page of the scrollview
+ * has very particular content
+ * ie the "drawer title/author", and the viewpager taking the remaining part of the screen", with the
+ * theme component checkboxes taking as much space as it needs.
+ *
+ **/
+public class ChooserDetailScrollView extends ScrollView {
+    private float xDistance;
+    private float yDistance;
+    private float lastX;
+    private float lastY;
+
+    public ChooserDetailScrollView(Context context) {
+        super(context);
+    }
+
+    public ChooserDetailScrollView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public ChooserDetailScrollView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    @Override
+    protected void measureChildWithMargins(View child, int parentWidthMeasureSpec, int widthUsed,
+                                           int parentHeightMeasureSpec, int heightUsed) {
+        final MarginLayoutParams lp = (MarginLayoutParams) child.getLayoutParams();
+
+        final int childWidthMeasureSpec = getChildMeasureSpec(parentWidthMeasureSpec,
+                mPaddingLeft + mPaddingRight + lp.leftMargin + lp.rightMargin
+                        + widthUsed, lp.width);
+        child.measure(childWidthMeasureSpec, parentHeightMeasureSpec);
+    }
+
+    @Override
+    public boolean onInterceptTouchEvent(MotionEvent ev) {
+        switch (ev.getAction()) {
+            case MotionEvent.ACTION_DOWN:
+                xDistance = yDistance = 0f;
+                lastX = ev.getX();
+                lastY = ev.getY();
+                break;
+            case MotionEvent.ACTION_MOVE:
+                final float curX = ev.getX();
+                final float curY = ev.getY();
+                xDistance = Math.abs(curX - lastX);
+                yDistance = Math.abs(curY - lastY);
+                lastX = curX;
+                lastY = curY;
+                if(xDistance > yDistance) return false;
+        }
+
+        return super.onInterceptTouchEvent(ev);
+    }
+
+    @Override
+    protected void onScrollChanged(int l, int t, int oldl, int oldt) {
+        super.onScrollChanged(l, t, oldl, oldt);
+        ((ChooserDetailLinearLayout)getChildAt(0)).onScrollChanged(l, t, oldl, oldt);
+    }
+
+    public View getHandle() {
+        return ((ChooserDetailLinearLayout)getChildAt(0)).getHandle();
+    }
+}