1 /* 2 * Copyright (c) 2022 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_GRID_GRID_ADAPTIVE_GRID_ADAPTIVE_LAYOUT_ALGORITHM_H 17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_GRID_GRID_ADAPTIVE_GRID_ADAPTIVE_LAYOUT_ALGORITHM_H 18 19 #include "core/components_ng/layout/layout_algorithm.h" 20 #include "core/components_ng/layout/layout_wrapper.h" 21 #include "core/components_ng/pattern/grid/grid_layout_base_algorithm.h" 22 #include "core/components_ng/pattern/grid/grid_layout_info.h" 23 #include "core/components_ng/pattern/grid/grid_layout_property.h" 24 25 namespace OHOS::Ace::NG { 26 27 // Effect when rowsTemplate and columnsTemplate are not setted, this algorithm effect these attribute: 28 // columnsGap | rowsGap | layoutDirection | maxCount | minCount | cellLength. 29 class ACE_EXPORT GridAdaptiveLayoutAlgorithm : public GridLayoutBaseAlgorithm { 30 DECLARE_ACE_TYPE(GridAdaptiveLayoutAlgorithm, GridLayoutBaseAlgorithm); 31 32 public: GridAdaptiveLayoutAlgorithm(GridLayoutInfo gridLayoutInfo)33 explicit GridAdaptiveLayoutAlgorithm(GridLayoutInfo gridLayoutInfo) 34 : GridLayoutBaseAlgorithm(std::move(gridLayoutInfo)) {}; 35 ~GridAdaptiveLayoutAlgorithm() override = default; 36 37 void Measure(LayoutWrapper* layoutWrapper) override; 38 void Layout(LayoutWrapper* layoutWrapper) override; 39 40 private: 41 OffsetF CalculateChildOffset(int32_t index, LayoutWrapper* layoutWrapper); 42 43 // cell size of grid. 44 SizeF gridCellSize_; 45 // grid cell count in main axis. 46 int32_t mainCount_ = 0; 47 // grid cell count in cross axis. 48 int32_t crossCount_ = 0; 49 // total count has shown. 50 int32_t displayCount_ = 0; 51 52 int32_t rowCount_ = 0; 53 int32_t columnCount_ = 0; 54 55 ACE_DISALLOW_COPY_AND_MOVE(GridAdaptiveLayoutAlgorithm); 56 }; 57 58 } // namespace OHOS::Ace::NG 59 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_GRID_GRID_ADAPTIVE_GRID_ADAPTIVE_LAYOUT_ALGORITHM_H 60