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ArtbookLayout.java
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/
ArtbookLayout.java
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/*******************************************************************************
* Copyright 2013 Comcast Cable Communications Management, LLC
*
* 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.comcast.freeflow.examples.artbook.layouts;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map.Entry;
import android.graphics.Rect;
import android.util.Log;
import com.comcast.freeflow.core.FreeFlowItem;
import com.comcast.freeflow.core.Section;
import com.comcast.freeflow.core.SectionedAdapter;
import com.comcast.freeflow.layouts.FreeFlowLayout;
import com.comcast.freeflow.layouts.FreeFlowLayout.FreeFlowLayoutParams;
import com.comcast.freeflow.layouts.FreeFlowLayoutBase;
import com.comcast.freeflow.utils.ViewUtils;
public class ArtbookLayout extends FreeFlowLayoutBase implements FreeFlowLayout {
private static final String TAG = "ArtbookLayout";
private int largeItemSide;
private int regularItemSide;
@Override
public void setDimensions(int measuredWidth, int measuredHeight) {
super.setDimensions(measuredWidth, measuredHeight);
largeItemSide = measuredWidth / 2;
regularItemSide = measuredWidth / 4;
}
private HashMap<Object, FreeFlowItem> map;
private Section s;
@Override
public void prepareLayout(){
Log.d(TAG, "prepare layout!!!");
map = new HashMap<Object, FreeFlowItem>();
s = itemsAdapter.getSection(0);
int rowIndex;
Log.d(TAG, "prepare layout for: "+s.getDataCount());
for (int i = 0; i < s.getDataCount(); i++) {
rowIndex = i / 5;
FreeFlowItem p = new FreeFlowItem();
p.isHeader = false;
p.itemIndex = i;
p.itemSection = 0;
p.data = s.getDataAtIndex(i);
Rect r = new Rect();
switch (i % 5) {
case (0):
r.left = 0;
r.top = rowIndex * largeItemSide;
r.right = largeItemSide;
r.bottom = r.top + largeItemSide;
if(rowIndex % 2 != 0){
r.offset(largeItemSide, 0);
}
break;
case (1):
r.left = largeItemSide;
r.right = largeItemSide + regularItemSide;
r.top = rowIndex * largeItemSide;
r.bottom = r.top + regularItemSide;
if(rowIndex % 2 != 0){
r.offset(-largeItemSide, 0);
}
break;
case (2):
r.left = 3 * regularItemSide;
r.right = width;
r.top = rowIndex * largeItemSide;
r.bottom = r.top + regularItemSide;
if(rowIndex % 2 != 0){
r.offset(-largeItemSide, 0);
}
break;
case (3):
r.left = largeItemSide;
r.right = largeItemSide + regularItemSide;
r.top = rowIndex * largeItemSide + regularItemSide;
r.bottom = r.top + regularItemSide;
if(rowIndex % 2 != 0){
r.offset(-largeItemSide, 0);
}
break;
case (4):
r.left = 3 * regularItemSide;
r.right = width;
r.top = rowIndex * largeItemSide + regularItemSide;
r.bottom = r.top + regularItemSide;
if(rowIndex % 2 != 0){
r.offset(-largeItemSide, 0);
}
break;
default:
break;
}
p.frame = r;
map.put(s.getDataAtIndex(i), p);
}
}
@Override
public HashMap<Object, FreeFlowItem> getItemProxies(
int viewPortLeft, int viewPortTop) {
Rect viewport = new Rect(viewPortLeft,
viewPortTop,
viewPortLeft + width,
viewPortTop + height);
//Log.d(TAG, "Viewport: "+viewPortLeft+", "+viewPortTop+", "+viewport.width()+","+viewport.height());
HashMap<Object, FreeFlowItem> ret = new HashMap<Object, FreeFlowItem>();
Iterator<Entry<Object, FreeFlowItem>> it = map.entrySet().iterator();
while (it.hasNext()) {
Entry<Object, FreeFlowItem> pairs = it.next();
FreeFlowItem p = (FreeFlowItem) pairs.getValue();
if ( Rect.intersects(p.frame, viewport) ) {
ret.put(pairs.getKey(), p);
}
}
return ret;
}
@Override
public FreeFlowItem getFreeFlowItemForItem(Object item) {
Log.d(TAG, " returing item: " + map.get(item));
return map.get(item);
}
@Override
public int getContentWidth() {
return 0;
}
@Override
public int getContentHeight() {
return s.getDataCount() / 5 * largeItemSide;
}
@Override
public FreeFlowItem getItemAt(float x, float y) {
return (FreeFlowItem) ViewUtils.getItemAt(map, (int) x, (int) y);
}
@Override
public void setLayoutParams(FreeFlowLayoutParams params) {
// TODO Auto-generated method stub
}
@Override
public boolean verticalScrollEnabled() {
return true;
}
@Override
public boolean horizontalScrollEnabled(){
return false;
}
}