Printing OpenGL View in Window

skyhawk

Moderator

Posts: 915
Joined: 2002.10

Post: #1

Mar 21, 2007 — 10:21 AM

So I have a window with many icons, and within this window I have an openGL view. Like so:
[Image: Picture10.png]

however, when I print it out, I get this:
[Image: pics10-2.png]

My print function is rather simple:

Code:

-(IBAction)printMyWindow:(id)sender;

{

    [[NSApp mainWindow] print:NULL];

}

Any help as to get my OpenGL view to print without biting my upper lip off?

ThemsAllTook

Moderator

Posts: 1,552
Joined: 2003.10

Post: #2

Mar 21, 2007 — 10:28 AM

Maybe if you do something like this in the OpenGLView before printing?

Code:

- (void) copyGLToBackingStore {

  NSSize size;

  void * buffer;

  [[self openGLContext] makeCurrentContext];

  size = [self bounds].size;

  buffer = malloc(size.width * size.height * 4);

  glReadPixels(0, 0, size.width, size.height, GL_RGBA, GL_UNSIGNED_BYTE, buffer);

  [self lockFocus];

  NSDrawBitmap([self bounds], size.width, size.height, 8, 4, 32, (size.width * 4), NO, NO, NSDeviceRGBColorSpace, (const unsigned char **) &buffer);

  [self unlockFocus];

  free(buffer);

  [[self window] flushWindow];

}

skyhawk

Moderator

Posts: 915
Joined: 2002.10

Post: #3

Mar 21, 2007 — 10:34 AM

I actually tried that, but it didn't change anything sadly.

unknown

Sage

Posts: 1,403
Joined: 2005.07

Post: #4

Mar 21, 2007 — 02:05 PM

Code:

- (void)print:(id)sender

{

    NSImage * im = [[NSImage alloc] initWithSize:[self bounds].size];

// copy the gl contents to the image via what alex said or other method

    NSImageView * imView = [[NSImageView alloc] initWithFrame:[self bounds]];

    [imView setImage: im];

    [imView print:nil];

}

Sir, e^iÏ€ + 1 = 0, hence God exists; reply!

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