140 lines
3.6 KiB
Factor
140 lines
3.6 KiB
Factor
! Copyright (C) 2009 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: alien alien.c-types alien.destructors alien.syntax accessors
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destructors fry kernel math math.bitwise sequences libc colors
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images images.memory core-graphics.types core-foundation.utilities ;
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IN: core-graphics
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! CGImageAlphaInfo
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C-ENUM:
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kCGImageAlphaNone
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kCGImageAlphaPremultipliedLast
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kCGImageAlphaPremultipliedFirst
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kCGImageAlphaLast
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kCGImageAlphaFirst
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kCGImageAlphaNoneSkipLast
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kCGImageAlphaNoneSkipFirst ;
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: kCGBitmapAlphaInfoMask ( -- n ) HEX: 1f ; inline
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: kCGBitmapFloatComponents ( -- n ) 1 8 shift ; inline
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: kCGBitmapByteOrderMask ( -- n ) HEX: 7000 ; inline
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: kCGBitmapByteOrderDefault ( -- n ) 0 12 shift ; inline
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: kCGBitmapByteOrder16Little ( -- n ) 1 12 shift ; inline
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: kCGBitmapByteOrder32Little ( -- n ) 2 12 shift ; inline
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: kCGBitmapByteOrder16Big ( -- n ) 3 12 shift ; inline
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: kCGBitmapByteOrder32Big ( -- n ) 4 12 shift ; inline
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: kCGBitmapByteOrder16Host ( -- n )
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little-endian?
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kCGBitmapByteOrder16Little
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kCGBitmapByteOrder16Big ? ; foldable
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: kCGBitmapByteOrder32Host ( -- n )
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little-endian?
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kCGBitmapByteOrder32Little
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kCGBitmapByteOrder32Big ? ; foldable
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FUNCTION: CGColorRef CGColorCreateGenericRGB (
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CGFloat red,
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CGFloat green,
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CGFloat blue,
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CGFloat alpha
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) ;
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: <CGColor> ( color -- CGColor )
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>rgba-components CGColorCreateGenericRGB ;
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M: color (>cf) <CGColor> ;
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FUNCTION: CGColorSpaceRef CGColorSpaceCreateDeviceRGB ( ) ;
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FUNCTION: CGContextRef CGBitmapContextCreate (
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void* data,
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size_t width,
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size_t height,
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size_t bitsPerComponent,
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size_t bytesPerRow,
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CGColorSpaceRef colorspace,
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CGBitmapInfo bitmapInfo
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) ;
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FUNCTION: void CGColorSpaceRelease ( CGColorSpaceRef ref ) ;
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DESTRUCTOR: CGColorSpaceRelease
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FUNCTION: void CGContextRelease ( CGContextRef ref ) ;
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DESTRUCTOR: CGContextRelease
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FUNCTION: void CGContextSetRGBStrokeColor (
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CGContextRef c,
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CGFloat red,
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CGFloat green,
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CGFloat blue,
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CGFloat alpha
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) ;
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FUNCTION: void CGContextSetRGBFillColor (
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CGContextRef c,
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CGFloat red,
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CGFloat green,
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CGFloat blue,
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CGFloat alpha
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) ;
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FUNCTION: void CGContextSetTextPosition (
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CGContextRef c,
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CGFloat x,
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CGFloat y
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) ;
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FUNCTION: void CGContextFillRect (
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CGContextRef c,
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CGRect rect
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) ;
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FUNCTION: void CGContextSetShouldSmoothFonts (
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CGContextRef c,
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bool shouldSmoothFonts
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) ;
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FUNCTION: void* CGBitmapContextGetData ( CGContextRef c ) ;
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CONSTANT: kCGLRendererGenericFloatID HEX: 00020400
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FUNCTION: CGLError CGLSetParameter ( CGLContextObj ctx, CGLContextParameter pname, GLint* params ) ;
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FUNCTION: CGDirectDisplayID CGMainDisplayID ( ) ;
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FUNCTION: CGError CGDisplayHideCursor ( CGDirectDisplayID display ) ;
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FUNCTION: CGError CGDisplayShowCursor ( CGDirectDisplayID display ) ;
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FUNCTION: CGError CGAssociateMouseAndMouseCursorPosition ( boolean_t connected ) ;
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FUNCTION: CGError CGWarpMouseCursorPosition ( CGPoint newCursorPosition ) ;
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<PRIVATE
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: bitmap-flags ( -- flags )
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{ kCGImageAlphaPremultipliedFirst kCGBitmapByteOrder32Host } flags ;
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: bitmap-color-space ( -- color-space )
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CGColorSpaceCreateDeviceRGB &CGColorSpaceRelease ;
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: <CGBitmapContext> ( data dim -- context )
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[ first2 8 ] [ first 4 * ] bi
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bitmap-color-space bitmap-flags CGBitmapContextCreate
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[ "CGBitmapContextCreate failed" throw ] unless* ;
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PRIVATE>
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: dummy-context ( -- context )
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\ dummy-context [
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[ 4 malloc { 1 1 } <CGBitmapContext> ] with-destructors
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] initialize-alien ;
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: make-bitmap-image ( dim quot -- image )
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'[ <CGBitmapContext> &CGContextRelease @ ] make-memory-bitmap
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ARGB >>component-order ; inline
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