Class GaussianBlurView
Definition
- Assembly:
- Tizen.NUI.dll
GaussianBlurView is a class for applying a render process that blurs an image.
public class GaussianBlurView : View, IDynamicResourceHandler, INameScope, System.IDisposable, IResourcesProvider- Inheritance
- Implements
-
System.IDisposable
Constructors
View SourceGaussianBlurView()
Constructor
Declaration
public GaussianBlurView()GaussianBlurView(uint, float, PixelFormat, float, float, bool)
Constructor with parameters.
Declaration
public GaussianBlurView(uint numSamples, float blurBellCurveWidth, PixelFormat renderTargetPixelFormat, float downsampleWidthScale, float downsampleHeightScale, bool blurUserImage)Parameters
| Type | Name | Description |
|---|---|---|
| uint | numSamples | The size of the Gaussian blur kernel (number of samples in horizontal / vertical blur directions) |
| float | blurBellCurveWidth | The constant controlling the Gaussian function, must be > 0.0. Controls the width of the bell curve, i.e. the look of the blur and also indirectly the amount of blurriness Smaller numbers for a tighter curve. Useful values in the range [0.5..3.0] - near the bottom of that range the curve is weighted heavily towards the centre pixel of the kernel (so there won't be much blur), near the top of that range the pixels have nearly equal weighting (closely approximating a box filter therefore). Values close to zero result in the bell curve lying almost entirely within a single pixel, in other words there will be basically no blur as neighbouring pixels have close to zero weights. |
| PixelFormat | renderTargetPixelFormat | The pixel format of the render targets we are using to perform the blur. |
| float | downsampleWidthScale | width scale factor applied during the blur process, scaling the size of the source image to the size of the final blurred image output. Useful for downsampling - trades visual quality for processing speed. A value of 1.0f results in no scaling applied. |
| float | downsampleHeightScale | The height scale factor applied during the blur process, scaling the size of the source image to the size of the final blurred image output. Useful for downsampling - trades visual quality for processing speed. A value of 1.0f results in no scaling applied. |
| bool | blurUserImage | If this is set to true, the GaussianBlurView object will operate in a special mode that allows the user to blur an image of their choice. See SetUserImageAndOutputRenderTarget(). |
GaussianBlurView(GaussianBlurView)
Copy constructor
Declaration
public GaussianBlurView(GaussianBlurView handle)Parameters
| Type | Name | Description |
|---|---|---|
| GaussianBlurView | handle |
Fields
View SourceBlurStrengthProperty
Declaration
public static readonly BindableProperty BlurStrengthPropertyField Value
| Type | Description |
|---|---|
| BindableProperty |
Properties
View SourceBlurStrength
The BlurStrength property. A value of 0.0 is zero blur and 1.0 is full blur. Default is 1.0. if you set the blur to 0.0, the result will be no blur BUT the internal rendering will still be happening. If you wish to turn the blur off, you should remove the GaussianBlurView object from the window also.
Declaration
public float BlurStrength { get; set; }Property Value
| Type | Description |
|---|---|
| float |
Methods
View SourceActivate()
Start rendering the GaussianBlurView. Must be called after you Add() it to the window.
Declaration
public void Activate()ActivateOnce()
Render the GaussianBlurView once. Must be called after you Add() it to the window. Listen to the Finished signal to determine when the rendering has completed.
Declaration
public void ActivateOnce()Deactivate()
Stop rendering the GaussianBlurView. Must be called after you Remove() it from the window.
Declaration
public void Deactivate()Dispose(DisposeTypes)
Dispose GaussianBlurView and all children on it.
Declaration
protected override void Dispose(DisposeTypes type)Parameters
| Type | Name | Description |
|---|---|---|
| DisposeTypes | type | Dispose type. |
Overrides
View SourceReleaseSwigCPtr(HandleRef)
Declaration
protected override void ReleaseSwigCPtr(System.Runtime.InteropServices.HandleRef swigCPtr)Parameters
| Type | Name | Description |
|---|---|---|
| System.Runtime.InteropServices.HandleRef | swigCPtr |
Overrides
Events
View SourceFinished
If ActivateOnce has been called, then connect to this signal to be notified when the target actor has been rendered.
Declaration
public event DaliEventHandler<object, EventArgs> FinishedEvent Type
| Type | Description |
|---|---|
| DaliEventHandler<object, EventArgs> |