public event EventHandler<CodecsSaveImageEventArgs> SaveImage
synchronized public void addSaveImageListener(CodecsSaveImageListener listener)
synchronized public void removeSaveImageListener(CodecsSaveImageListener listener)
public:
event EventHandler<CodecsSaveImageEventArgs^>^ SaveImage
def SaveImage(sender,e): # sender: RasterCodecs e: CodecsSaveImageEventArgs
The event handler receives an argument of type CodecsSaveImageEventArgs containing data related to this event. The following CodecsSaveImageEventArgs properties provide information specific to this event.
Property | Description |
---|---|
Buffer | Gets the memory buffer containing one or more lines of output image data that the you must provide. |
This event will fire during saving images with the Save methods. If you use this event, you must copy the image data to the provided event buffer.
You can also use this event to get information about the image being saved, provide a progress status, and/or abort the save operation. For information on how to use this event as a progress status monitor, refer to CodecsSaveOptions.RetrieveDataFromImage and CodecsSaveImageEventArgs.
This example will double the density of an image as it is being saved.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Color;
using Leadtools.Svg;
public void SaveImageExample()
{
RasterCodecs codecs = new RasterCodecs();
string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp");
string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1_SaveImage.cmp");
// Load the source file (make sure to load as 24 bits/pixel)
RasterImage image = codecs.Load(srcFileName, 24, CodecsLoadByteOrder.Bgr, 1, 1);
// Instruct RasterCodecs to generate the saved scanlines data for us to manipulate
codecs.Options.Save.RetrieveDataFromImage = true;
// Add a handler to the SaveImage event
codecs.SaveImage += new EventHandler<CodecsSaveImageEventArgs>(codecs_SaveImage);
// Save the image
codecs.Save(image, destFileName, RasterImageFormat.Cmp, 24);
codecs.SaveImage -= new EventHandler<CodecsSaveImageEventArgs>(codecs_SaveImage);
image.Dispose();
// Clean up
codecs.Dispose();
}
private void codecs_SaveImage(object sender, CodecsSaveImageEventArgs e)
{
// This example works with images saved as 24-bit per pixel only
Debug.Assert(e.Image.BitsPerPixel == 24);
e.Cancel = false;
if (e.Row == 0)
{
// Show information about the image being saved
Debug.WriteLine("Saving an image with {0} bpp to {1}", e.Image.BitsPerPixel, e.FileName);
Debug.WriteLine("Offset: {0}, OffsetValid: {1}", e.Offset, e.OffsetValid);
Debug.WriteLine("Page: {0} of {1}", e.Page, e.LastPage - e.FirstPage + 1);
Debug.WriteLine("Page percent: {0}%, Total percent: {1}%, Image Page: {2}", e.PagePercent, e.TotalPercent, e.ImagePage);
if (e.Stream != null)
{
Debug.WriteLine("Stream: {0}", e.Stream);
}
}
Debug.WriteLine("Row: {0}, Lines {1}", e.Row, e.Lines);
// Get the scanlines from the image
int scanlineLength = e.Image.BytesPerLine;
byte[] scanline = new byte[scanlineLength];
// Loop through all the scanlines in the data
for (int y = 0; y < e.Lines; y++)
{
// Get this row
e.Buffer.GetData(y * scanlineLength, scanline, 0, scanlineLength);
// We got the data, now double the intensity
// Remember, this is 24-bits/pixel
for (int x = 0; x < scanlineLength; x++)
{
scanline[x] *= 2;
}
// Copy it back to the event buffer
e.Buffer.SetData(y * scanlineLength, scanline, 0, scanlineLength);
}
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images";
}
import java.io.*;
import java.net.*;
import java.nio.file.Paths;
import java.util.*;
import java.time.Instant;
import java.time.Duration;
import org.junit.*;
import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;
import static org.junit.Assert.*;
import leadtools.*;
import leadtools.codecs.*;
import leadtools.codecs.RasterCodecs.FeedCallbackThunk;
import leadtools.drawing.internal.*;
import leadtools.imageprocessing.*;
import leadtools.imageprocessing.color.ChangeIntensityCommand;
import leadtools.svg.*;
public void saveImageExample() {
final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images";
RasterCodecs codecs = new RasterCodecs();
String srcFileName = combine(LEAD_VARS_IMAGES_DIR, "Image1.cmp");
String destFileName = combine(LEAD_VARS_IMAGES_DIR, "Image2.cmp");
// Load the source file (make sure to load as 24 bits/pixel)
RasterImage image = codecs.load(srcFileName, 24, CodecsLoadByteOrder.BGR, 1, 1);
// Instruct RasterCodecs to generate the saved scanlines data for us to
// manipulate
codecs.getOptions().getSave().setRetrieveDataFromImage(true);
// Add a handler to the SaveImage event
codecs.addSaveImageListener(codecsSaveImage);
// Save the image
codecs.save(image, destFileName, RasterImageFormat.CMP, 24);
assertTrue("File unsuccessfully saved to" + destFileName, (new File(destFileName)).exists());
System.out.println("File is saved to" + destFileName);
// Clean up
codecs.removeSaveImageListener(codecsSaveImage);
image.dispose();
codecs.dispose();
}
CodecsSaveImageListener codecsSaveImage = new CodecsSaveImageListener() {
@Override
public void onSaveImage(CodecsSaveImageEvent e) {
// This example works with images saved as 24-bit per pixel only
assertTrue(e.getImage().getBitsPerPixel() == 24);
e.setCancel(false);
if (e.getRow() == 0) {
// Show information about the image being saved
System.out.println("Saving an image with " + e.getImage().getBitsPerPixel() + " bpp");
System.out.println("Page: " + e.getPage() + " of " + (e.getLastPage() - e.getFirstPage() + 1));
System.out.println("Page percent: " + e.getPagePercent() + "%, Total percent: " + e.getTotalPercent()
+ "%, Image Page: " + e.getImagePage());
if (e.getStream() != null) {
System.out.println("Stream: " + e.getStream());
}
}
System.out.println("Row: " + e.getRow() + ", Lines " + e.getLines());
// Get the scanlines from the image
int scanlineLength = e.getImage().getBytesPerLine();
byte[] scanline = new byte[scanlineLength];
// Loop through all the scanlines in the data
for (int y = 0; y < e.getLines(); y++) {
// Get this row
e.getBuffer().getData(y * scanlineLength, scanline, 0, scanlineLength);
// We got the data, now double the intensity
// Remember, this is 24-bits/pixel
for (int x = 0; x < scanlineLength; x++) {
scanline[x] *= 2;
}
// Copy it back to the event buffer
e.getBuffer().setData(y * scanlineLength, scanline, 0, scanlineLength);
}
}
};
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