PaintImageRegionEffect(IntPtr,RasterImage,Rectangle,Rectangle,Rectangle,Rectangle,RasterPaintProperties,SpecialEffectsType,SpecialEffectsProgress) Method

Applies an effect when painting a bitmap region to a device context. This method works the same as PaintImageEffect, except that only the bitmap region is painted.

Syntax

Visual Basic
C#
Objective-C
Java
C++

public void PaintImageRegionEffect( 
   IntPtr hdc,
   RasterImage image,
   Rectangle src,
   Rectangle srcClip,
   Rectangle dest,
   Rectangle destClip,
   RasterPaintProperties paintProperties,
   SpecialEffectsType effectType,
   SpecialEffectsProgress progressCallback
)

'Declaration
 
Public Overloads Sub PaintImageRegionEffect( _
   ByVal hdc As IntPtr, _
   ByVal image As RasterImage, _
   ByVal src As Rectangle, _
   ByVal srcClip As Rectangle, _
   ByVal dest As Rectangle, _
   ByVal destClip As Rectangle, _
   ByVal paintProperties As RasterPaintProperties, _
   ByVal effectType As SpecialEffectsType, _
   ByVal progressCallback As SpecialEffectsProgress _
)

'Usage
 
Dim instance As SpecialEffectsProcessor
Dim hdc As IntPtr
Dim image As RasterImage
Dim src As Rectangle
Dim srcClip As Rectangle
Dim dest As Rectangle
Dim destClip As Rectangle
Dim paintProperties As RasterPaintProperties
Dim effectType As SpecialEffectsType
Dim progressCallback As SpecialEffectsProgress
 
instance.PaintImageRegionEffect(hdc, image, src, srcClip, dest, destClip, paintProperties, effectType, progressCallback)

public:
void PaintImageRegionEffect( 
   IntPtr hdc,
   RasterImage^ image,
   Rectangle src,
   Rectangle srcClip,
   Rectangle dest,
   Rectangle destClip,
   RasterPaintProperties paintProperties,
   SpecialEffectsType effectType,
   SpecialEffectsProgress^ progressCallback
)

Parameters

hdc: Handle to a device context
image: Pointer to an object hat reference the bitmap that has the region to paint.
src: Rectangle to be used as the display source rectangle that specifies the part of the image to use as the display source.
srcClip: Rectangle to be used as the display source clipping rectangle that specifies the portion of the display source to paint. Generally, this is used for updating the display when part of the source image has changed.
dest: Rectangle to be used as the display destination rectangle that determines how the source rectangle is scaled and how the image is positioned in the device context. The coordinates for the Rectangle object are relative to the device context. There is no default for this parameter. You must specify the Rectangle object.
destClip: Rectangle to be used as the display destination clipping rectangle that specifies the portion of the display rectangle to paint. Generally, this is used for updating changes in the display surface, such as when a user moves another window, uncovering a part of the image that had been covered up. The coordinates for the Rectangle object are relative to the device context. You can pass null to use the default, which matches the device context.
paintProperties: Options for the display.
effectType: Effect to apply when painting. For valid values, refer to SpecialEffectsType.
progressCallback: Callback method that will be called when the paint image effect is started to determine the status for the paint of the image effect.

Remarks

Multipass painting for the PushClass is disabled.

Example

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.SpecialEffects
Imports Leadtools.Drawing

Public Sub PaintImageRegionEffect(ByVal g As Graphics, ByVal destRect As Rectangle)
   Dim processor As SpecialEffectsProcessor = New SpecialEffectsProcessor()
   Dim properties As RasterPaintProperties = New RasterPaintProperties()
   properties.RasterOperation = RasterPaintProperties.SourceCopy

   Dim codecs As RasterCodecs = New RasterCodecs()
   Dim rasterImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"))

   processor.PaintImageRegionEffect(g, rasterImage, Rectangle.Empty, Rectangle.Empty, destRect, Rectangle.Empty, properties, SpecialEffectsType.SpiralIn, _
                                    AddressOf SpecialEffectsProgress)

   rasterImage.Dispose()
End Sub

Private Shared Function SpecialEffectsProgress(ByVal percent As Integer) As Boolean
   Console.WriteLine("{0}%", percent)
   Return True
End Function

Public NotInheritable Class LEAD_VARS
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class

using Leadtools;
using Leadtools.Codecs;
using Leadtools.SpecialEffects;
using Leadtools.Drawing;

public void PaintImageRegionEffect(Graphics g, Rectangle destRect)
{
   SpecialEffectsProcessor processor = new SpecialEffectsProcessor();
   RasterPaintProperties properties = new RasterPaintProperties();
   properties.RasterOperation = RasterPaintProperties.SourceCopy;

   RasterCodecs codecs = new RasterCodecs();
   RasterImage rasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"));

   processor.PaintImageRegionEffect(g, rasterImage,
                                    Rectangle.Empty, /* Default source rectangle */
                                    Rectangle.Empty, /* Default source clip area */
                                    destRect, /* Destination rectangle */
                                    Rectangle.Empty, /* Default destination clipping rectangle */
                                    properties,
                                    SpecialEffectsType.SpiralIn, /* Spiral effect */
                                    SpecialEffectsProgress);

   rasterImage.Dispose();
}

static bool SpecialEffectsProgress(int percent)
{
   Console.WriteLine("{0}%", percent);
   return true;
}

static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

Requirements

Target Platforms

Reference

SpecialEffectsProcessor Class
SpecialEffectsProcessor Members
Overload List