SavePage Event (original) (raw)
Summary
Occurs once for each page saved to an image file.
Syntax
synchronized public void addSavePageListener(CodecsSavePageListener listener)
synchronized public void removeSavePageListener(CodecsSavePageListener listener)
public:
event EventHandler<CodecsPageEventArgs^>^ SavePage
def SavePage(sender,e): # sender: RasterCodecs e: CodecsPageEventArgs Event Data
The event handler receives an argument of type CodecsPageEventArgs containing data related to this event. The following CodecsPageEventArgs properties provide information specific to this event.
| Property | Description |
|---|---|
| Command | A value indicating how the load or save process should continue. |
Example
This example will use the SavePage event to skip a certain page when saving a multipage file
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Color;
using Leadtools.Svg;
public void SavePageExample()
{
RasterCodecs codecs = new RasterCodecs();
codecs.Options.Load.AllPages = true;
string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Eye.gif");
string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "Eye_SavePage.gif");
// Load all the pages in the file
RasterImage image = codecs.Load(srcFileName);
Debug.WriteLine("Original image has {0} pages", image.PageCount);
// Add a handler to the SavePage event
codecs.SavePage += new EventHandler<CodecsPageEventArgs>(codecs_SavePage);
// Save all the pages of this file
codecs.Save(image, destFileName, RasterImageFormat.Gif, 0, 1, image.PageCount, 1, CodecsSavePageMode.Overwrite);
codecs.SavePage -= new EventHandler<CodecsPageEventArgs>(codecs_SavePage);
// Check if we saved all pages but 1
CodecsImageInfo info = codecs.GetInformation(destFileName, true);
Debug.WriteLine("Info reports {0} pages saved to the file", info.TotalPages);
Debug.Assert(info.TotalPages == (image.PageCount - 1));
image.Dispose();
// Clean up
codecs.Dispose();
}
void codecs_SavePage(object sender, CodecsPageEventArgs e)
{
if (e.State == CodecsPageEventState.Before && e.Page == 1)
{
// Before saving the first page, show the save operation information
Debug.WriteLine(
"Saving {0} pages to {1}. Image size is {2} by {3}",
e.PageCount - 1, e.FileName, e.Image.Width, e.Image.Height);
}
Debug.WriteLine("{0} saving page {1}:{2}",
e.State == CodecsPageEventState.After ? "After" : "Before",
e.Page, e.PageCount);
// If this is the 2nd page, ignore it
if (e.Page == 2 && e.State == CodecsPageEventState.Before)
{
e.Command = CodecsPageEventCommand.Skip;
Debug.WriteLine("--- Skipping this page, there should be no 'After' for this one");
}
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}
Leadtools.Codecs Assembly
CompactFile(Stream,Stream,int,int,bool,int,int,bool,int,CodecsSavePageMode,bool,bool) Method
CompactFile(Stream,Stream,int,int,bool,long,int,bool,long,CodecsSavePageMode,bool,bool,bool) Method
CompactFile(string,string,int,int,bool,int,int,bool,int,CodecsSavePageMode,bool,bool) Method
CompactFile(string,string,int,int,bool,long,int,bool,long,CodecsSavePageMode,bool,bool,bool) Method