Hi everyone.
I am ordered to save a NSView hosting the arbitrary number of core
animation layers. Although there are many tutorials about how to save
the content of a NSView, I can find nothing about saving the content
of the layer embedded in a NSVIew.
First I tried to use the following code to save the content of the
NSVIew. In my opinion, if the content is saved, the layers in the
NSView may be saved as well.
NSView* _tempView = [_window contentView];
NSRect _tempRect = [[_window contentView] frame];
if ([[_tempView dataWithPDFInsideRect:_tempRect ]
writeToFile:resultString atomically:YES] ) {
printf("Image Saved\n");
}
Yes, the result of the above code is "Image Saved". However, the
result image is valueless --- it is blank... :-(
Then I tried another method:
NSImage* intermediateImage = [[NSImage alloc] initWithSize:
NSMakeSize([[_window contentView] frame].size.width,
[[_window contentView] frame].size.height)];
[intermediateImage addRepresentation:
[[_window contentView] bitmapImageRepForCachingDisplayInRect:
[[_window contentView] frame]]
];
NSData* _imageData = [intermediateImage TIFFRepresentation];
if ([_imageData writeToFile:resultString atomically:YES] ) {
printf("Image Saved\n");
}
I got a failed result too... The saved image is a blank file.
Can anyone here give me a help to solve this issue? Thank you very
much for any help.
Have a good day. :-)
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