{ CoreGraphics - CGGradient.h
   Copyright (c) 2006-2011 Apple Inc.
   All rights reserved. }
{       Pascal Translation Updated:  Jonas Maebe, <jonas@freepascal.org>, October 2009 }
{       Pascal Translation Updated:  Jonas Maebe, <jonas@freepascal.org>, October 2012 }
{       Pascal Translation Updated:  Jonas Maebe, <jonas@freepascal.org>, August 2015 }
{
    Modified for use with Free Pascal
    Version 308
    Please report any bugs to <gpc@microbizz.nl>
}

{$ifc not defined MACOSALLINCLUDE or not MACOSALLINCLUDE}
{$mode macpas}
{$modeswitch cblocks}
{$packenum 1}
{$macro on}
{$inline on}
{$calling mwpascal}

{$IFNDEF FPC_DOTTEDUNITS}
unit CGGradient;
{$ENDIF FPC_DOTTEDUNITS}
interface
{$setc UNIVERSAL_INTERFACES_VERSION := $0400}
{$setc GAP_INTERFACES_VERSION := $0308}

{$ifc not defined USE_CFSTR_CONSTANT_MACROS}
    {$setc USE_CFSTR_CONSTANT_MACROS := TRUE}
{$endc}

{$ifc defined CPUPOWERPC and defined CPUI386}
	{$error Conflicting initial definitions for CPUPOWERPC and CPUI386}
{$endc}
{$ifc defined FPC_BIG_ENDIAN and defined FPC_LITTLE_ENDIAN}
	{$error Conflicting initial definitions for FPC_BIG_ENDIAN and FPC_LITTLE_ENDIAN}
{$endc}

{$ifc not defined __ppc__ and defined CPUPOWERPC32}
	{$setc __ppc__ := 1}
{$elsec}
	{$setc __ppc__ := 0}
{$endc}
{$ifc not defined __ppc64__ and defined CPUPOWERPC64}
	{$setc __ppc64__ := 1}
{$elsec}
	{$setc __ppc64__ := 0}
{$endc}
{$ifc not defined __i386__ and defined CPUI386}
	{$setc __i386__ := 1}
{$elsec}
	{$setc __i386__ := 0}
{$endc}
{$ifc not defined __x86_64__ and defined CPUX86_64}
	{$setc __x86_64__ := 1}
{$elsec}
	{$setc __x86_64__ := 0}
{$endc}
{$ifc not defined __arm__ and defined CPUARM}
	{$setc __arm__ := 1}
{$elsec}
	{$setc __arm__ := 0}
{$endc}
{$ifc not defined __arm64__ and defined CPUAARCH64}
  {$setc __arm64__ := 1}
{$elsec}
  {$setc __arm64__ := 0}
{$endc}

{$ifc defined cpu64}
  {$setc __LP64__ := 1}
{$elsec}
  {$setc __LP64__ := 0}
{$endc}


{$ifc defined __ppc__ and __ppc__ and defined __i386__ and __i386__}
	{$error Conflicting definitions for __ppc__ and __i386__}
{$endc}

{$ifc defined __ppc__ and __ppc__}
	{$setc TARGET_CPU_PPC := TRUE}
	{$setc TARGET_CPU_PPC64 := FALSE}
	{$setc TARGET_CPU_X86 := FALSE}
	{$setc TARGET_CPU_X86_64 := FALSE}
	{$setc TARGET_CPU_ARM := FALSE}
	{$setc TARGET_CPU_ARM64 := FALSE}
	{$setc TARGET_OS_MAC := TRUE}
	{$setc TARGET_OS_IPHONE := FALSE}
	{$setc TARGET_IPHONE_SIMULATOR := FALSE}
	{$setc TARGET_OS_EMBEDDED := FALSE}
{$elifc defined __ppc64__ and __ppc64__}
	{$setc TARGET_CPU_PPC := FALSE}
	{$setc TARGET_CPU_PPC64 := TRUE}
	{$setc TARGET_CPU_X86 := FALSE}
	{$setc TARGET_CPU_X86_64 := FALSE}
	{$setc TARGET_CPU_ARM := FALSE}
	{$setc TARGET_CPU_ARM64 := FALSE}
	{$setc TARGET_OS_MAC := TRUE}
	{$setc TARGET_OS_IPHONE := FALSE}
	{$setc TARGET_IPHONE_SIMULATOR := FALSE}
	{$setc TARGET_OS_EMBEDDED := FALSE}
{$elifc defined __i386__ and __i386__}
	{$setc TARGET_CPU_PPC := FALSE}
	{$setc TARGET_CPU_PPC64 := FALSE}
	{$setc TARGET_CPU_X86 := TRUE}
	{$setc TARGET_CPU_X86_64 := FALSE}
	{$setc TARGET_CPU_ARM := FALSE}
	{$setc TARGET_CPU_ARM64 := FALSE}
{$ifc defined iphonesim}
 	{$setc TARGET_OS_MAC := FALSE}
	{$setc TARGET_OS_IPHONE := TRUE}
	{$setc TARGET_IPHONE_SIMULATOR := TRUE}
{$elsec}
	{$setc TARGET_OS_MAC := TRUE}
	{$setc TARGET_OS_IPHONE := FALSE}
	{$setc TARGET_IPHONE_SIMULATOR := FALSE}
{$endc}
	{$setc TARGET_OS_EMBEDDED := FALSE}
{$elifc defined __x86_64__ and __x86_64__}
	{$setc TARGET_CPU_PPC := FALSE}
	{$setc TARGET_CPU_PPC64 := FALSE}
	{$setc TARGET_CPU_X86 := FALSE}
	{$setc TARGET_CPU_X86_64 := TRUE}
	{$setc TARGET_CPU_ARM := FALSE}
	{$setc TARGET_CPU_ARM64 := FALSE}
{$ifc defined iphonesim}
 	{$setc TARGET_OS_MAC := FALSE}
	{$setc TARGET_OS_IPHONE := TRUE}
	{$setc TARGET_IPHONE_SIMULATOR := TRUE}
{$elsec}
	{$setc TARGET_OS_MAC := TRUE}
	{$setc TARGET_OS_IPHONE := FALSE}
	{$setc TARGET_IPHONE_SIMULATOR := FALSE}
{$endc}
	{$setc TARGET_OS_EMBEDDED := FALSE}
{$elifc defined __arm__ and __arm__}
	{$setc TARGET_CPU_PPC := FALSE}
	{$setc TARGET_CPU_PPC64 := FALSE}
	{$setc TARGET_CPU_X86 := FALSE}
	{$setc TARGET_CPU_X86_64 := FALSE}
	{$setc TARGET_CPU_ARM := TRUE}
	{$setc TARGET_CPU_ARM64 := FALSE}
	{$setc TARGET_OS_MAC := FALSE}
	{$setc TARGET_OS_IPHONE := TRUE}
	{$setc TARGET_IPHONE_SIMULATOR := FALSE}
	{$setc TARGET_OS_EMBEDDED := TRUE}
{$elifc defined __arm64__ and __arm64__}
	{$setc TARGET_CPU_PPC := FALSE}
	{$setc TARGET_CPU_PPC64 := FALSE}
	{$setc TARGET_CPU_X86 := FALSE}
	{$setc TARGET_CPU_X86_64 := FALSE}
	{$setc TARGET_CPU_ARM := FALSE}
	{$setc TARGET_CPU_ARM64 := TRUE}
{$ifc defined ios}
	{$setc TARGET_OS_MAC := FALSE}
	{$setc TARGET_OS_IPHONE := TRUE}
	{$setc TARGET_OS_EMBEDDED := TRUE}
{$elsec}
	{$setc TARGET_OS_MAC := TRUE}
	{$setc TARGET_OS_IPHONE := FALSE}
	{$setc TARGET_OS_EMBEDDED := FALSE}
{$endc}
	{$setc TARGET_IPHONE_SIMULATOR := FALSE}
{$elsec}
	{$error __ppc__ nor __ppc64__ nor __i386__ nor __x86_64__ nor __arm__ nor __arm64__ is defined.}
{$endc}

{$ifc defined __LP64__ and __LP64__ }
  {$setc TARGET_CPU_64 := TRUE}
{$elsec}
  {$setc TARGET_CPU_64 := FALSE}
{$endc}

{$ifc defined FPC_BIG_ENDIAN}
	{$setc TARGET_RT_BIG_ENDIAN := TRUE}
	{$setc TARGET_RT_LITTLE_ENDIAN := FALSE}
{$elifc defined FPC_LITTLE_ENDIAN}
	{$setc TARGET_RT_BIG_ENDIAN := FALSE}
	{$setc TARGET_RT_LITTLE_ENDIAN := TRUE}
{$elsec}
	{$error Neither FPC_BIG_ENDIAN nor FPC_LITTLE_ENDIAN are defined.}
{$endc}
{$setc ACCESSOR_CALLS_ARE_FUNCTIONS := TRUE}
{$setc CALL_NOT_IN_CARBON := FALSE}
{$setc OLDROUTINENAMES := FALSE}
{$setc OPAQUE_TOOLBOX_STRUCTS := TRUE}
{$setc OPAQUE_UPP_TYPES := TRUE}
{$setc OTCARBONAPPLICATION := TRUE}
{$setc OTKERNEL := FALSE}
{$setc PM_USE_SESSION_APIS := TRUE}
{$setc TARGET_API_MAC_CARBON := TRUE}
{$setc TARGET_API_MAC_OS8 := FALSE}
{$setc TARGET_API_MAC_OSX := TRUE}
{$setc TARGET_CARBON := TRUE}
{$setc TARGET_CPU_68K := FALSE}
{$setc TARGET_CPU_MIPS := FALSE}
{$setc TARGET_CPU_SPARC := FALSE}
{$setc TARGET_OS_UNIX := FALSE}
{$setc TARGET_OS_WIN32 := FALSE}
{$setc TARGET_RT_MAC_68881 := FALSE}
{$setc TARGET_RT_MAC_CFM := FALSE}
{$setc TARGET_RT_MAC_MACHO := TRUE}
{$setc TYPED_FUNCTION_POINTERS := TRUE}
{$setc TYPE_BOOL := FALSE}
{$setc TYPE_EXTENDED := FALSE}
{$setc TYPE_LONGLONG := TRUE}
{$IFDEF FPC_DOTTEDUNITS}
uses MacOsApi.MacTypes,MacOsApi.CFBase,MacOsApi.CFArray,MacOsApi.CGBase,MacOsApi.CGColorSpace;
{$ELSE FPC_DOTTEDUNITS}
uses MacTypes,CFBase,CFArray,CGBase,CGColorSpace;
{$ENDIF FPC_DOTTEDUNITS}
{$endc} {not MACOSALLINCLUDE}

{$ALIGN POWER}


// CGGradientRef defined in CGBase

type
	CGGradientDrawingOptions = UInt32;
const
	kCGGradientDrawsBeforeStartLocation = 1 shl 0;
	kCGGradientDrawsAfterEndLocation = 1 shl 1;

{ A CGGradient defines a transition between colors. The transition is
   defined over a range from 0 to 1 inclusive. A gradient specifies a color
   at location 0, one at location 1, and possibly additional colors assigned
   to locations between 0 and 1.

   A CGGradient has a color space. When a gradient is created, all colors
   specified are converted to that color space, and interpolation of colors
   occurs using the components of that color space. See the documentation of
   each creation function for more details. }

{ Return the CFTypeID for CGGradients. }

function CGGradientGetTypeID: CFTypeID; external name '_CGGradientGetTypeID';
(* CG_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0) *)

{ Creates a gradient by pairing the color components provided in
   `components' with locations provided in `locations'. If `locations' is
   NULL, the first color in `colors' will be at location 0, the last color
   in `colors' will be at location 1, and intervening colors will be at
   equal intervals in between. Otherwise, each location in `locations'
   should be a CGFloat between 0 and 1. Each set of color components should
   specify a color in the color space `space' (which may not be a pattern or
   indexed color space). The number of locations is specified by `count';
   the number of color components is the product of `count' and the number
   of color components of `space'. If no color is provided for 0 or 1, the
   gradient will use the color provided at the locations closest to 0 and 1
   for those values. }

function CGGradientCreateWithColorComponents( space: CGColorSpaceRef; {const} components: {variable-size-array} CGFloatPtr; {const} locations: {variable-size-array} CGFloatPtr; count: size_t ): CGGradientRef; external name '_CGGradientCreateWithColorComponents';
(* CG_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0) *)

{ Creates a gradient by pairing the colors provided in `colors' with the
   locations provided in `locations'. `colors' should be a non-empty array
   of CGColor objects. The colors may be in any color space other than a
   pattern or indexed color space. If `space' is non-NULL, each color will
   be converted to that color space and the gradient will drawn in that
   space; otherwise, each color will be converted to and drawn in the
   "Generic" RGB color space. If `space' is specified, it may not be a
   pattern or indexed color space. If `locations' is NULL, the first color
   in `colors' will be at location 0, the last color in `colors' will be at
   location 1, and intervening colors will be at equal intervals in between.
   Otherwise, each location in `locations' should be a CGFloat between 0 and
   1; the array of locations should should contain the same number of items
   as `colors'. If no color is provided for 0 or 1, the gradient will use
   the color provided at the locations closest to 0 and 1 for those
   values. }

function CGGradientCreateWithColors( space: CGColorSpaceRef; colors: CFArrayRef; {const} locations: {variable-size-array} CGFloatPtr ): CGGradientRef; external name '_CGGradientCreateWithColors';
(* CG_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0) *)

{ Equivalent to `CFRetain' except that it doesn't crash (as `CFRetain'
   does) if `gradient' is NULL. }

function CGGradientRetain( gradient: CGGradientRef ): CGGradientRef; external name '_CGGradientRetain';
(* CG_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0) *)

{ Equivalent to `CFRelease' except that it doesn't crash (as `CFRelease'
   does) if `gradient' is NULL. }

procedure CGGradientRelease( gradient: CGGradientRef ); external name '_CGGradientRelease';
(* CG_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0) *)

{$ifc not defined MACOSALLINCLUDE or not MACOSALLINCLUDE}

end.
{$endc} {not MACOSALLINCLUDE}
