OHOS::UIImageView

UIImageView ()

A default constructor used to create a UIImageView instance.

~UIImageView ()

virtual 

A destructor used to delete the UIImageView instance.

GetViewType () const override

UIViewType 

Obtains the view type.

GetWidth () override

int16_t 

Obtains the width of this image view.

GetHeight () override

int16_t 

Obtains the height of this image view.

OnPreDraw (const Rect &invalidatedArea) override

bool 

Checks whether this image view needs to be covered to optimize the drawing process.

OnDraw (const Rect &invalidatedArea) override

void 

Draws this image view.

SetSrc (const char *src)

void 

Sets the image path.

SetSrc (const ImageInfo *src)

void 

Sets the image information.

SetAutoEnable (bool enable)

void 

Sets whether the image view size needs to be adaptive to the image size.

SetBlurLevel (BlurLevel level)

void 

Sets the blur level for this image when it is rotated or scaled.

GetBlurLevel () const

BlurLevel 

Obtains the blur level of this image when it is rotated or scaled.

SetTransformAlgorithm (TransformAlgorithm algorithm)

void 

Sets the algorithm used for image rotation and scaling.

GetTransformAlgorithm () const

TransformAlgorithm 

Obtains the algorithm used for image rotation and scaling.

GetPath () const

const char * 

获取图片路径

GetImageInfo () const

const ImageInfo * 

获取图片信息

GetSrcType () const

uint8_t 

获取图片类型

UIView ()

A default constructor used to create an UIView instance.

UIView (const char *id)

A constructor used to create an UIView instance.

~UIView ()

virtual 

A destructor used to delete the UIView instance.

OnPostDraw (const Rect &invalidatedArea)

virtual void 

Called after a view is drawn.

Invalidate ()

void 

Refreshes the invalidated area of the view.

InvalidateRect (const Rect &invalidatedArea)

void 

Refreshes a view in a specified invalidated area.

OnLongPressEvent (const LongPressEvent &event)

virtual bool 

Called when the view is long pressed.

OnDragStartEvent (const DragEvent &event)

virtual bool 

Called when the view starts to drag.

OnDragEvent (const DragEvent &event)

virtual bool 

Called when the view is being dragged.

OnDragEndEvent (const DragEvent &event)

virtual bool 

Called when the view stops dragging.

OnClickEvent (const ClickEvent &event)

virtual void 

Called when the view is clicked.

OnPressEvent (const PressEvent &event)

virtual void 

Called when the view is pressed.

OnReleaseEvent (const ReleaseEvent &event)

virtual void 

Called when the view is released.

OnCancelEvent (const CancelEvent &event)

virtual void 

Called when a click event on the view is canceled.

SetOnDragListener (OnDragListener *onDragListener)

void 

Sets a drag event listener for the view.

GetOnDragListener ()

OnDragListener *& 

Obtains the drag event listener for the view.

SetOnClickListener (OnClickListener *onClickListener)

void 

Sets a click event listener for the view.

GetOnClickListener ()

OnClickListener *& 

Obtains the click event listener for the view.

SetOnLongPressListener (OnLongPressListener *onLongPressListener)

void 

Sets a long-press event listener for the view.

GetOnLongPressListener ()

OnLongPressListener *& 

Obtains the long-press event listener for the view.

SetOnTouchListener (OnTouchListener *onTouchListener)

void 

Sets a touch event listener for the view.

GetTouchListener ()

OnTouchListener *& 

Obtains the touch event listener for the view.

GetTargetView (const Point &point, UIView **last)

virtual void 

Obtains the top-level view based on specified coordinates.

SetParent (UIView *parent)

void 

Sets the parent view for the view.

GetParent () const

UIView * 

Obtains the parent view of the view.

SetNextSibling (UIView *sibling)

void 

Sets the next sibling view for the view.

GetNextSibling () const

UIView * 

Obtains the next sibling view of the view.

SetVisible (bool visible)

virtual void 

Sets whether the view is visible.

IsVisible () const

bool 

Checks whether the view is visible.

SetTouchable (bool touch)

void 

Sets whether the view is touchable.

IsTouchable () const

bool 

Checks whether the view is touchable.

SetDraggable (bool draggable)

void 

Sets whether the view is draggable.

IsDraggable () const

bool 

Checks whether the view is draggable.

SetDragParentInstead (bool dragParentInstead)

void 

Sets whether to transfer the drag event to the parent view for processing when the view is being dragged.

IsDragParentInstead () const

bool 

Obtains whether the view transfers a drag event to the parent view for processing.

GetRect () const

Rect 

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

Rect 

Obtains the visible absolute rectangle area of the view.

GetMaskedRect () const

Rect 

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

Rect 

Obtains the absolute rectangle area of the view.

GetContentRect ()

virtual Rect 

Obtains the content of the absolute rectangle area of the view. This area excludes padding.

GetRelativeRect () const

Rect 

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)

void 

Adjusts the size of the visible area. This operation may affect the final display size.

SetWidth (int16_t width)

virtual void 

Sets the width for the view.

SetHeight (int16_t height)

virtual void 

Sets the height for the view.

Resize (int16_t width, int16_t height)

virtual void 

Adjusts the size of the view.

SetX (int16_t x)

virtual void 

Sets the x-coordinate for the view.

GetX () const

int16_t 

Obtains the x-coordinate for the view.

SetY (int16_t y)

virtual void 

Sets the y-coordinate for the view.

GetY () const

int16_t 

Obtains the y-coordinate for the view.

SetPosition (int16_t x, int16_t y)

virtual void 

Sets the position for the view.

SetPosition (int16_t x, int16_t y, int16_t width, int16_t height)

virtual void 

Adjusts the position and size of the view.

IsViewGroup () const

bool 

Checks whether the view is a container view.

SetIntercept (bool isIntercept)

void 

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)

void 

Sets the affine transformation matrix.

GetTransformMap ()

TransformMap & 

Obtains an affine transformation matrix.

GetChildById (const char *id) const

virtual UIView * 

Obtains the child view of a specified ID.

SetViewId (const char *id)

void 

Sets the view ID.

GetViewId () const

const char * 

Obtains the view ID.

SetViewIndex (int16_t index)

void 

Sets the view index.

GetViewIndex () const

int16_t 

Obtains the view index.

LayoutChildren (bool neeInvalidate=false)

virtual void 

Lays out all child views according to the preset arrangement mode.

LayoutCenterOfParent (int16_t xOffSet=0, int16_t yOffset=0)

void 

Lays out the view in the center of the parent view.

LayoutLeftOfParent (int16_t offset=0)

void 

Lays out the view on the left of the parent view.

LayoutRightOfParent (int16_t offset=0)

void 

Lays out the view on the right of the parent view.

LayoutTopOfParent (int16_t offset=0)

void 

Lays out the view on the top of the parent view.

LayoutBottomOfParent (int16_t offset=0)

void 

Lays out the view on the bottom of the parent view.

AlignLeftToSibling (const char *id, int16_t offset=0)

void 

Aligns the view with the left of a sibling view.

AlignRightToSibling (const char *id, int16_t offset=0)

void 

Aligns the view with the right of a sibling view.

AlignTopToSibling (const char *id, int16_t offset=0)

void 

Aligns the view with the top of a sibling view.

AlignBottomToSibling (const char *id, int16_t offset=0)

void 

Aligns the view with the bottom of a sibling view.

AlignHorCenterToSibling (const char *id, int16_t offset=0)

void 

Aligns the view with the center of a sibling view in the x-axis.

AlignVerCenterToSibling (const char *id, int16_t offset=0)

void 

Aligns the view with the center of a sibling view in the y-axis.

LayoutLeftToSibling (const char *id, int16_t offset=0)

void 

Lays out the view on the left of a sibling view.

LayoutRightToSibling (const char *id, int16_t offset=0)

void 

Lays out the view on the right of a sibling view.

LayoutTopToSibling (const char *id, int16_t offset=0)

void 

Lays out the view on the above of a sibling view.

LayoutBottomToSibling (const char *id, int16_t offset=0)

void 

Lays out the view on the below of a sibling view.

SetStyle (Style &style)

virtual void 

Sets the view style.

SetStyle (uint8_t key, int64_t value)

virtual void 

Sets a style.

GetStyle (uint8_t key) const

virtual int64_t 

Obtains the value of a style.

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)

void * 

Overrides the new function.

operator delete (void *p)

void 

Overrides the delete function.

imageWidth_

Represents the width of this image.

imageHeight_

Represents the height of this image.

autoEnable_

Specifies whether automatic adaptation is enabled.

needRefresh_

Specifies whether a refresh is needed.

colorFormat_: 4

Represents the color format of this image.

blurLevel_: 2

Represents the blur level of this image when it is rotated or scaled.

algorithm_: 1

Represents the algorithm used for image rotation and scaling.