1 /*
2 * Copyright (c) 2022-2023 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 #include "core/components_ng/pattern/tabs/tab_bar_layout_property.h"
17
18 #include "core/components/tab_bar/tab_theme.h"
19 #include "core/components_ng/base/frame_node.h"
20 #include "core/components_ng/pattern/tabs/tab_bar_pattern.h"
21 #include "core/pipeline_ng/pipeline_context.h"
22
23 namespace OHOS::Ace::NG {
24
GetIndicatorRect(int32_t index)25 RectF TabBarLayoutProperty::GetIndicatorRect(int32_t index)
26 {
27 auto pipelineContext = PipelineContext::GetCurrentContext();
28 CHECK_NULL_RETURN(pipelineContext, RectF());
29 auto tabTheme = pipelineContext->GetTheme<TabTheme>();
30 CHECK_NULL_RETURN(tabTheme, RectF());
31 auto node = GetHost();
32 CHECK_NULL_RETURN(node, RectF());
33 auto childColumn = DynamicCast<FrameNode>(node->GetChildAtIndex(index));
34 CHECK_NULL_RETURN(childColumn, RectF());
35 auto grandChildren = DynamicCast<FrameNode>(childColumn->GetChildren().back());
36 CHECK_NULL_RETURN(grandChildren, RectF());
37 auto geometryNode = grandChildren->GetGeometryNode();
38 RectF indicator = geometryNode->GetFrameRect();
39
40 /* Set indicator at the bottom of columnNode's last child */
41 auto childColumnRect = childColumn->GetGeometryNode()->GetFrameRect();
42 auto tabBarPattern = node->GetPattern<TabBarPattern>();
43 CHECK_NULL_RETURN(node, RectF());
44 indicator.SetLeft(indicator.GetX() + childColumnRect.GetX());
45 indicator.SetTop(indicator.Bottom() + childColumnRect.GetY());
46 return indicator;
47 }
48
49 } // namespace OHOS::Ace::NG
50