Re: Creating an NSImage from a bitmap
Re: Creating an NSImage from a bitmap
- Subject: Re: Creating an NSImage from a bitmap
- From: Daniel Jalkut <email@hidden>
- Date: Thu, 10 Aug 2006 13:42:27 -0400
Hi Craig - you need to help it out a little bit by specifying
"bytesPerRow" as 2.
Daniel
On Aug 10, 2006, at 12:01 PM, Craig Dooley wrote:
I am attempting to take a bitmap, and generate a black/transparent
NSImage from it. The following example is attempting to draw a 16x16
square in black, that is transparent in the center. It does create a
16x16 NSImage, which i can display, but only the top line and one
pixel on the second row are black, and the rest is white. Is there
any way to do this, or do i need to translate the data to another
format first?
unsigned char pattern[] = {
0xff, 0xff,
0xff, 0xff,
0xc0, 0x03,
0xc0, 0x03,
0xc0, 0x03,
0xc0, 0x03,
0xc0, 0x03,
0xc0, 0x03,
0xc0, 0x03,
0xc0, 0x03,
0xc0, 0x03,
0xc0, 0x03,
0xc0, 0x03,
0xc0, 0x03,
0xff, 0xff,
0xff, 0xff
};
unsigned char *planes[] = {pattern};
glyph = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes:planes
pixelsWide:16
pixelsHigh:16
bitsPerSample:1
samplesPerPixel:1
hasAlpha:NO
isPlanar:NO
colorSpaceName:NSDeviceBlackColorSpace
bytesPerRow:0
bitsPerPixel:0];
image = [[NSImage alloc] init];
[image addRepresentation:glyph];
-Craig
--
----------------------------------------------------------------------
-
Craig Dooley <email@hidden>
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