Line data    Source code

       1             : /**
       2             :  Copyright (c) 2023 Stappler LLC <admin@stappler.dev>
       3             : 
       4             :  Permission is hereby granted, free of charge, to any person obtaining a copy
       5             :  of this software and associated documentation files (the "Software"), to deal
       6             :  in the Software without restriction, including without limitation the rights
       7             :  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
       8             :  copies of the Software, and to permit persons to whom the Software is
       9             :  furnished to do so, subject to the following conditions:
      10             : 
      11             :  The above copyright notice and this permission notice shall be included in
      12             :  all copies or substantial portions of the Software.
      13             : 
      14             :  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
      15             :  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      16             :  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
      17             :  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      18             :  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
      19             :  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
      20             :  THE SOFTWARE.
      21             :  **/
      22             : 
      23             : #include "MaterialDataScrollHandlerSlice.h"
      24             : 
      25             : namespace STAPPLER_VERSIONIZED stappler::xenolith::material2d {
      26             : 
      27           0 : bool DataScrollHandlerSlice::init(DataScroll *s, DataCallback &&cb) {
      28           0 :         if (!Handler::init(s)) {
      29           0 :                 return false;
      30             :         }
      31             : 
      32           0 :         auto &items = s->getItems();
      33           0 :         if (!items.empty()) {
      34           0 :                 _originFront = items.begin()->second->getPosition();
      35           0 :                 _originBack = items.rbegin()->second->getPosition();
      36           0 :                 _originBack.y += items.rbegin()->second->getContentSize().height;
      37             :         }
      38             : 
      39           0 :         _dataCallback = move(cb);
      40             : 
      41           0 :         return true;
      42             : }
      43             : 
      44           0 : void DataScrollHandlerSlice::setDataCallback(DataCallback &&cb) {
      45           0 :         _dataCallback = move(cb);
      46           0 : }
      47             : 
      48           0 : DataScroll::ItemMap DataScrollHandlerSlice::run(Request t, DataMap &&data) {
      49           0 :         DataScroll::ItemMap ret;
      50             : 
      51           0 :         auto origin = getOrigin(t);
      52             : 
      53           0 :         if (t == DataScroll::Request::Front) {
      54           0 :                 for (auto it = data.rbegin(); it != data.rend(); it ++) {
      55           0 :                         auto item = onItem(std::move(it->second), origin);
      56             : 
      57           0 :                         item->setPosition(
      58           0 :                                         (_layout == DataScroll::Layout::Vertical)
      59           0 :                                                 ?Vec2(origin.x, origin.y - item->getContentSize().height)
      60           0 :                                                 :Vec2(origin.x - item->getContentSize().height, origin.y));
      61             : 
      62           0 :                         if (_layout == DataScroll::Layout::Vertical) {
      63           0 :                                 origin.y -= item->getContentSize().height;
      64             :                         } else {
      65           0 :                                 origin.x -= item->getContentSize().width;
      66             :                         }
      67             : 
      68           0 :                         ret.insert(std::make_pair(it->first, item));
      69           0 :                 }
      70             :         } else {
      71           0 :                 for (auto &it : data) {
      72           0 :                         auto item = onItem(std::move(it.second), origin);
      73             : 
      74           0 :                         if (_layout == DataScroll::Layout::Vertical) {
      75           0 :                                 origin.y += item->getContentSize().height;
      76             :                         } else {
      77           0 :                                 origin.x += item->getContentSize().width;
      78             :                         }
      79             : 
      80           0 :                         ret.insert(std::make_pair(it.first, item));
      81           0 :                 }
      82             :         }
      83           0 :         return ret;
      84           0 : }
      85             : 
      86           0 : Vec2 DataScrollHandlerSlice::getOrigin(Request t) const {
      87           0 :         Vec2 origin = Vec2(0, 0);
      88             : 
      89           0 :         switch (t) {
      90           0 :         case DataScroll::Request::Reset:
      91           0 :                 origin = Vec2(0, 0);
      92           0 :                 break;
      93           0 :         case DataScroll::Request::Update:
      94             :         case DataScroll::Request::Front:
      95           0 :                 origin = _originFront;
      96           0 :                 break;
      97           0 :         case DataScroll::Request::Back:
      98           0 :                 origin = _originBack;
      99           0 :                 break;
     100             :         }
     101             : 
     102           0 :         return origin;
     103             : }
     104             : 
     105           0 : Rc<DataScroll::Item> DataScrollHandlerSlice::onItem(Value &&d, const Vec2 &o) {
     106           0 :         if (_dataCallback) {
     107           0 :                 return _dataCallback(this, std::move(d), o);
     108             :         }
     109           0 :         return nullptr;
     110             : }
     111             : 
     112             : }