# OHOS::FlexLayout ## **Overview** **Related Modules:** [Graphic](Graphic.md) **Description:** Defines a flexible layout container. You can perform simple adaptive layout on child views that the container holds, for example, to evenly arrange all child views in the same row or column. **Since:** 1.0 **Version:** 1.0 ## **Summary** ## Public Member Functions
FlexLayout () |
A default constructor used to create a FlexLayout instance. |
~FlexLayout () |
A destructor used to delete the FlexLayout instance. |
SetMajorAxisAlign (const AlignType &align) |
Sets the alignment mode of the primary axis (the axis where the layout direction is located). The child views in the layout are placed in this mode in the direction of the primary axis. |
SetSecondaryAxisAlign (const AlignType &align) |
Sets the alignment mode of the secondary axis (the axis perpendicular to the set layout direction). |
SetFlexWrap (uint8_t wrap) |
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LayoutChildren (bool needInvalidate=false) override |
Lays out all child views according to the preset arrangement mode. |
Layout () |
A default constructor used to create a Layout instance. |
~Layout () |
A destructor used to delete the Layout instance. |
SetLayoutDirection (const DirectionType &direction) |
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UIViewGroup () |
A default constructor used to create a UIViewGroup instance. |
~UIViewGroup () |
A destructor used to delete the UIViewGroup instance. |
GetViewType () const override |
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RemoveAll () |
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GetTargetView (const Point &point, UIView **last) override |
Obtains the target child view that is visible and can respond to touch events based on given coordinates. |
MoveChildByOffset (int16_t x, int16_t y) |
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GetChildrenHead () const |
UIView * |
GetChildrenTail () const |
UIView * |
SetDisallowIntercept (bool flag) |
Sets whether this view group is intercepted upon touch events. |
GetChildById (const char *id) const override |
UIView * |
SetAutoSize (bool state) |
Sets whether the size of this view group is adaptive to that of all child views. |
UIView () |
A default constructor used to create an UIView instance. |
UIView (const char *id) |
A constructor used to create an UIView instance. |
~UIView () |
A destructor used to delete the UIView instance. |
Called before a view is drawn. This function is used to check whether the parent view of this view needs to be redrawn so as to optimize the drawing process. |
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OnPostDraw (const Rect &invalidatedArea) |
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ReMeasure () |
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Invalidate () |
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InvalidateRect (const Rect &invalidatedArea) |
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OnLongPressEvent (const LongPressEvent &event) |
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OnDragStartEvent (const DragEvent &event) |
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OnDragEvent (const DragEvent &event) |
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OnDragEndEvent (const DragEvent &event) |
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OnClickEvent (const ClickEvent &event) |
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OnPressEvent (const PressEvent &event) |
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OnReleaseEvent (const ReleaseEvent &event) |
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OnCancelEvent (const CancelEvent &event) |
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SetOnDragListener (OnDragListener *onDragListener) |
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SetOnClickListener (OnClickListener *onClickListener) |
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SetOnLongPressListener (OnLongPressListener *onLongPressListener) |
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SetOnTouchListener (OnTouchListener *onTouchListener) |
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GetParent () const |
UIView * |
SetNextSibling (UIView *sibling) |
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GetNextSibling () const |
UIView * |
SetVisible (bool visible) |
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IsVisible () const |
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SetTouchable (bool touch) |
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IsTouchable () const |
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SetDraggable (bool draggable) |
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IsDraggable () const |
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SetDragParentInstead (bool dragParentInstead) |
Sets whether to transfer the drag event to the parent view for processing when the view is being dragged. |
IsDragParentInstead () const |
Obtains whether the view transfers a drag event to the parent view for processing. |
GetRect () const |
Obtains the absolute rectangle area of the view. When the view has deformation such as rotation, the rectangle area is the intersection set of the absolute rectangle area and deformation matrix. |
GetVisibleRect () const |
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GetMaskedRect () const |
Obtains the valid absolute rectangle area of the view. The valid area refers to the area where the view can be displayed. Generally, the valid area is the same as the visible view area, but they may be different in the grid layout. |
GetOrigRect () const |
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virtual Rect Obtains the content of the absolute rectangle area of the view. This area excludes padding. |
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GetRelativeRect () const |
Obtains the rectangular area of the view relative to the parent view, that is, the rectangular area relative to the coordinates of the parent view. |
ResizeVisibleArea (int16_t x, int16_t y, int16_t width, int16_t height) |
Adjusts the size of the visible area. This operation may affect the final display size. |
SetWidth (int16_t width) |
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GetWidth () |
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SetHeight (int16_t height) |
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GetHeight () |
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Resize (int16_t width, int16_t height) |
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SetX (int16_t x) |
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GetX () const |
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SetY (int16_t y) |
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GetY () const |
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SetPosition (int16_t x, int16_t y) |
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SetPosition (int16_t x, int16_t y, int16_t width, int16_t height) |
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IsViewGroup () const |
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SetIntercept (bool isIntercept) |
Sets whether to intercept the drag event. If intercepted, the view does not transfer the drag event to the parent view after local processing. |
SetTransformMap (const TransformMap &transMap) |
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SetViewId (const char *id) |
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GetViewId () const |
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SetViewIndex (int16_t index) |
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GetViewIndex () const |
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LayoutCenterOfParent (int16_t xOffSet=0, int16_t yOffset=0) |
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LayoutLeftOfParent (int16_t offset=0) |
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LayoutRightOfParent (int16_t offset=0) |
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LayoutTopOfParent (int16_t offset=0) |
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LayoutBottomOfParent (int16_t offset=0) |
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AlignLeftToSibling (const char *id, int16_t offset=0) |
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AlignRightToSibling (const char *id, int16_t offset=0) |
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AlignTopToSibling (const char *id, int16_t offset=0) |
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AlignBottomToSibling (const char *id, int16_t offset=0) |
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AlignHorCenterToSibling (const char *id, int16_t offset=0) |
Aligns the view with the center of a sibling view in the x-axis. |
AlignVerCenterToSibling (const char *id, int16_t offset=0) |
Aligns the view with the center of a sibling view in the y-axis. |
LayoutLeftToSibling (const char *id, int16_t offset=0) |
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LayoutRightToSibling (const char *id, int16_t offset=0) |
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LayoutTopToSibling (const char *id, int16_t offset=0) |
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LayoutBottomToSibling (const char *id, int16_t offset=0) |
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SetStyle (uint8_t key, int64_t value) |
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GetStyle (uint8_t key) const |
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GetStyleConst () const |
const Style & Obtains the view style. This function applies to scenarios where the style does not need to be modified, which saves memory. |
operator new (size_t size) |
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operator delete (void *p) |
GetAllChildRelativeRect () const |
Obtains the rectangle area of a new view group after being adaptive to the size of all child views. |
Performs operations needed after a child view is added or removed. |
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Indicates the pointer to the first child view of this view group. |
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Indicates the pointer to the last child view of this view group. |
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Specifies whether this view group is intercepted upon touch events. |
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Specifies whether the size of this view group is adaptive to that of all child views. |