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Blend2D.pas
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Blend2D.pas
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unit Blend2D;
{ OPP wrappers for Blend2D C API.
Follows the C++ API where possible. The following C++ classes are not
converted because Delphi provides built-in alternatives for these:
* BLArray<T>: uses TArray<T> instead
* BLFile: uses TFileStream instead
* BLString: uses String instead
* BLVariant: not needed
* BLStyle: style properties are used in another way. We may introduce a
TBLStyle type once Delphi has support for managed records (or use Scope
solution like TBLStrokeOptions). }
{$SCOPEDENUMS ON}
{$EXCESSPRECISION OFF}
interface
uses
System.Math,
System.SysUtils,
Blend2D.Api;
{$REGION 'Error Handling'}
{ ============================================================================
[Error Handling - Enums]
============================================================================ }
type
{ Blend2D result code. }
TBLResultCode = (
{ Successful result code. }
Success = BL_SUCCESS,
{ Out of memory [ENOMEM]. }
OutOfMemory = BL_ERROR_OUT_OF_MEMORY,
{ Invalid value/argument [EINVAL]. }
InvalidValue = BL_ERROR_INVALID_VALUE,
{ Invalid state [EFAULT]. }
InvalidState = BL_ERROR_INVALID_STATE,
{ Invalid handle or file. [EBADF]. }
InvalidHandle = BL_ERROR_INVALID_HANDLE,
{ Value too large [EOVERFLOW]. }
ValueTooLarge = BL_ERROR_VALUE_TOO_LARGE,
{ Not initialized (some instance is built-in none when it shouldn't be). }
NotInitialized = BL_ERROR_NOT_INITIALIZED,
{ Not implemented [ENOSYS]. }
NotImplemented = BL_ERROR_NOT_IMPLEMENTED,
{ Operation not permitted [EPERM]. }
NotPermitted = BL_ERROR_NOT_PERMITTED,
{ IO error [EIO]. }
IOError = BL_ERROR_IO,
{ Device or resource busy [EBUSY]. }
Busy = BL_ERROR_BUSY,
{ Operation interrupted [EINTR]. }
Interrupted = BL_ERROR_INTERRUPTED,
{ Try again [EAGAIN]. }
TryAgain = BL_ERROR_TRY_AGAIN,
{ Timed out [ETIMEDOUT]. }
TimedOut = BL_ERROR_TIMED_OUT,
{ Broken pipe [EPIPE]. }
BrokenPipe = BL_ERROR_BROKEN_PIPE,
{ File is not seekable [ESPIPE]. }
InvalidSeek = BL_ERROR_INVALID_SEEK,
{ Too many levels of symlinks [ELOOP]. }
SymlinkLoop = BL_ERROR_SYMLINK_LOOP,
{ File is too large [EFBIG]. }
FileTooLarge = BL_ERROR_FILE_TOO_LARGE,
{ File/directory already exists [EEXIST]. }
AlreadyExists = BL_ERROR_ALREADY_EXISTS,
{ Access denied [EACCES]. }
AccessDenied = BL_ERROR_ACCESS_DENIED,
{ Media changed [Windows::ERROR_MEDIA_CHANGED]. }
MediaChanged = BL_ERROR_MEDIA_CHANGED,
{ The file/FS is read-only [EROFS]. }
ReadOnlyFS = BL_ERROR_READ_ONLY_FS,
{ Device doesn't exist [ENXIO]. }
NoDevice = BL_ERROR_NO_DEVICE,
{ Not found, no entry (fs) [ENOENT]. }
NoEntry = BL_ERROR_NO_ENTRY,
{ No media in drive/device [ENOMEDIUM]. }
NoMedia = BL_ERROR_NO_MEDIA,
{ No more data / end of file [ENODATA]. }
NoMoreData = BL_ERROR_NO_MORE_DATA,
{ No more files [ENMFILE]. }
NoMoreFiles = BL_ERROR_NO_MORE_FILES,
{ No space left on device [ENOSPC]. }
NoSpaceLeft = BL_ERROR_NO_SPACE_LEFT,
{ Directory is not empty [ENOTEMPTY]. }
NotEmpty = BL_ERROR_NOT_EMPTY,
{ Not a file [EISDIR]. }
NotFile = BL_ERROR_NOT_FILE,
{ Not a directory [ENOTDIR]. }
NotDirectory = BL_ERROR_NOT_DIRECTORY,
{ Not same device [EXDEV]. }
NotSameDevice = BL_ERROR_NOT_SAME_DEVICE,
{ Not a block device [ENOTBLK]. }
NotBlockDevice = BL_ERROR_NOT_BLOCK_DEVICE,
{ File/path name is invalid [n/a]. }
InvalidFilename = BL_ERROR_INVALID_FILE_NAME,
{ File/path name is too long [ENAMETOOLONG]. }
FilenameTooLong = BL_ERROR_FILE_NAME_TOO_LONG,
{ Too many open files [EMFILE]. }
TooManyOpenFiles = BL_ERROR_TOO_MANY_OPEN_FILES,
{ Too many open files by OS [ENFILE]. }
TooManyOpenFilesByOS = BL_ERROR_TOO_MANY_OPEN_FILES_BY_OS,
{ Too many symbolic links on FS [EMLINK]. }
TooManyLinks = BL_ERROR_TOO_MANY_LINKS,
{ Too many threads [EAGAIN]. }
TooManyThreads = BL_ERROR_TOO_MANY_THREADS,
{ Thread pool is exhausted and couldn't acquire the requested thread count. }
ThreadPoolExhausted = BL_ERROR_THREAD_POOL_EXHAUSTED,
{ File is empty (not specific to any OS error). }
FileEmpty = BL_ERROR_FILE_EMPTY,
{ File open failed [Windows::ERROR_OPEN_FAILED]. }
OpenFailed = BL_ERROR_OPEN_FAILED,
{ Not a root device/directory [Windows::ERROR_DIR_NOT_ROOT]. }
NotRootDevice = BL_ERROR_NOT_ROOT_DEVICE,
{ Unknown system error that failed to translate to Blend2D result code. }
UnknownSystemError = BL_ERROR_UNKNOWN_SYSTEM_ERROR,
{ Invalid data alignment. }
InvalidArgument = BL_ERROR_INVALID_ALIGNMENT,
{ Invalid data signature or header. }
InvalidSignature = BL_ERROR_INVALID_SIGNATURE,
{ Invalid or corrupted data. }
InvalidData = BL_ERROR_INVALID_DATA,
{ Invalid string (invalid data of either UTF8, UTF16, or UTF32). }
InvalidString = BL_ERROR_INVALID_STRING,
{ Truncated data (more data required than memory/stream provides). }
DataTruncated = BL_ERROR_DATA_TRUNCATED,
{ Input data too large to be processed. }
DataTooLarge = BL_ERROR_DATA_TOO_LARGE,
{ Decompression failed due to invalid data (RLE, Huffman, etc). }
DecompressionFailed = BL_ERROR_DECOMPRESSION_FAILED,
{ Invalid geometry (invalid path data or shape). }
InvalidGeometry = BL_ERROR_INVALID_GEOMETRY,
{ Returned when there is no matching vertex in path data. }
NoMatchingVertex = BL_ERROR_NO_MATCHING_VERTEX,
{ No matching cookie (BLContext). }
NoMatchingCookie = BL_ERROR_NO_MATCHING_COOKIE,
{ No states to restore (BLContext). }
NoStatesToRestore = BL_ERROR_NO_STATES_TO_RESTORE,
{ The size of the image is too large. }
ImageTooBig = BL_ERROR_IMAGE_TOO_LARGE,
{ Image codec for a required format doesn't exist. }
ImageNoMatchingCodec = BL_ERROR_IMAGE_NO_MATCHING_CODEC,
{ Unknown or invalid file format that cannot be read. }
ImageUnknownFileFormat = BL_ERROR_IMAGE_UNKNOWN_FILE_FORMAT,
{ Image codec doesn't support reading the file format. }
ImageDecoderNotProvided = BL_ERROR_IMAGE_DECODER_NOT_PROVIDED,
{ Image codec doesn't support writing the file format. }
ImageEncoderNotProvided = BL_ERROR_IMAGE_ENCODER_NOT_PROVIDED,
{ Multiple IHDR chunks are not allowed (PNG). }
PngMultipleIHDR = BL_ERROR_PNG_MULTIPLE_IHDR,
{ Invalid IDAT chunk (PNG). }
PngInvalidIDAT = BL_ERROR_PNG_INVALID_IDAT,
{ Invalid IEND chunk (PNG). }
PngInvalidIEND = BL_ERROR_PNG_INVALID_IEND,
{ Invalid PLTE chunk (PNG). }
PngInvalidPLTE = BL_ERROR_PNG_INVALID_PLTE,
{ Invalid tRNS chunk (PNG). }
PngInvalidTRNS = BL_ERROR_PNG_INVALID_TRNS,
{ Invalid filter type (PNG). }
PngInvalidFilter = BL_ERROR_PNG_INVALID_FILTER,
{ Unsupported feature (JPEG). }
JpegUnsupportedFeature = BL_ERROR_JPEG_UNSUPPORTED_FEATURE,
{ Invalid SOS marker or header (JPEG). }
JpegInvalidSOS = BL_ERROR_JPEG_INVALID_SOS,
{ Invalid SOF marker (JPEG). }
JpegInvalidSOF = BL_ERROR_JPEG_INVALID_SOF,
{ Multiple SOF markers (JPEG). }
JpegMultipleSOF = BL_ERROR_JPEG_MULTIPLE_SOF,
{ Unsupported SOF marker (JPEG). }
JpegUnsupportedSOF = BL_ERROR_JPEG_UNSUPPORTED_SOF,
{ Font doesn't have any data as it's not initialized. }
FontNotInitialized = BL_ERROR_FONT_NOT_INITIALIZED,
{ Font or font-face was not matched (BLFontManager). }
FontNoMatch = BL_ERROR_FONT_NO_MATCH,
{ Font has no character to glyph mapping data. }
FontNoCharacterMapping = BL_ERROR_FONT_NO_CHARACTER_MAPPING,
{ Font has missing an important table. }
FontMissingImportantTable = BL_ERROR_FONT_MISSING_IMPORTANT_TABLE,
{ Font feature is not available. }
FontFeatureNotAvailable = BL_ERROR_FONT_FEATURE_NOT_AVAILABLE,
{ Font has an invalid CFF data. }
FontCFFInvalidData = BL_ERROR_FONT_CFF_INVALID_DATA,
{ Font program terminated because the execution reached the limit. }
FontProgramTerminated = BL_ERROR_FONT_PROGRAM_TERMINATED,
{ Invalid glyph identifier. }
InvalidGlyph = BL_ERROR_INVALID_GLYPH);
type
_TBLResultCodeHelper = record helper for TBLResultCode
public
function ToString: String;
end;
{ ============================================================================
[Error Handling - Handlers]
============================================================================ }
type
{ Type of exception that is raised for Blend2D errors.
Exceptions are enabled by default, but can be disabled using
BLSetErrorHandler. }
EBlend2DError = class(Exception)
{$REGION 'Internal Declarations'}
private
FResultCode: TBLResultCode;
{$ENDREGION 'Internal Declarations'}
public
constructor Create(const AResultCode: TBLResultCode);
{ The Blend2D result code }
property ResultCode: TBLResultCode read FResultCode;
end;
type
{ Type of procedure that is called when a Blend2D error occurs.
Parameters:
AResultCode: the Blend2D result code
AUserData: any user data passed to BLSetErrorHandler. }
TBLErrorHandler = procedure(const AResultCode: TBLResultCode;
const AUserData: Pointer);
{ Sets a Blend2D error handler.
Parameters:
AHandler: the error handler that is called when a Blend2D error occurs.
AUserData: any data you want to pass to the handler.
The default error handler raises an exception of type EBlend2DError.
You can disable error handling completely by setting AHandler to nil. In that
case, there is no way to know if and when an error occured.
The following procedures can be used to set some default error handlers:
* BLSetExceptionErrorHandler: sets the error handler to a procedure that
raises an exception when a Blend2D error occurs. This is the default
behavior.
* BLSetGetLastErrorHandler: sets the error handler to a procedure that sets
a global error variable when a Blend2D error occurs. You can then use
BLGetLastError to retrieve this error code. }
procedure BLSetErrorHandler(const AHandler: TBLErrorHandler;
const AUserData: Pointer);
{ Sets the error handler to a procedure that raises an exception when a Blend2D
error occurs. This is the default behavior. }
procedure BLSetExceptionErrorHandler;
{ Sets the error handler to a procedure that sets a global error variable when a
Blend2D error occurs. You can then use BLGetLastError to retrieve this error
code. }
procedure BLSetGetLastErrorHandler;
{ Retrieves the last Blend2D error, or TBLResultCode.Success if there was
none.
After this call, the last error is reset to TBLResultCode.Success.
This function should only be used when BLSetGetLastErrorHandler has been
called. Otherwise, it always returns TBLResultCode.Success.
This function is not thread-safe. If Blend2D is used from multiple threads,
the returned value can be from any thread. }
function BLGetLastError: TBLResultCode;
{$ENDREGION 'Error Handling'}
{$REGION 'General'}
{ ============================================================================
[General - Types]
============================================================================ }
type
{ Tag is a 32-bit integer consisting of 4 characters in the following format:
Tag := (A shl 24) or (B shl 16) or (C shl 8) or D
Tags are used extensively by OpenType fonts and other binary formats like
PNG. In most cases TAGs should only contain ASCII letters, digits, and
spaces.
Blend2D uses TBLTag in public and internal APIs to distinguish between a
regular UInt32 and tag. }
TBLTag = BLTag;
type
{ Unique identifier that can be used for caching purposes.
Some objects such as IBLImage and IBLFontFace have assigned an unique
identifier that can be used to identify such objects for caching purposes.
This identifier is never zero, so zero can be safely used as "uncached".
Note: Unique identifier is per-process. It's implemented as an increasing
global or thread-local counter in a way that identifiers would not
collide. }
TBLUniqueId = BLUniqueId;
type
{ A type used to store a pack of bits.
BitWord should be equal in size to a machine word. }
TBLBitWord = BLBitWord;
{ ============================================================================
[General - Enums]
============================================================================ }
type
{ Boolean operator. }
TBLBooleanOp = (
{ Result = B. }
Copy = BL_BOOLEAN_OP_COPY,
{ Result = A and B. }
&And = BL_BOOLEAN_OP_AND,
{ Result = A or B. }
&Or = BL_BOOLEAN_OP_OR,
{ Result = A xor B. }
&Xor = BL_BOOLEAN_OP_XOR,
{ Result = A and not B. }
Sub = BL_BOOLEAN_OP_SUB);
type
{ Extend mode. }
TBLExtendMode = (
{ Pad extend [default]. }
Pad = BL_EXTEND_MODE_PAD,
{ Repeat extend. }
&Repeat = BL_EXTEND_MODE_REPEAT,
{ Reflect extend. }
Reflect = BL_EXTEND_MODE_REFLECT,
{ Alias to Pad. }
PadXPadY = BL_EXTEND_MODE_PAD_X_PAD_Y,
{ Alias to Repeat. }
RepeatXRepeatY = BL_EXTEND_MODE_REPEAT_X_REPEAT_Y,
{ Alias to Reflect. }
ReflectXReflectY = BL_EXTEND_MODE_REFLECT_X_REFLECT_Y,
{ Pad X and repeat Y. }
PadXRepeatY = BL_EXTEND_MODE_PAD_X_REPEAT_Y,
{ Pad X and reflect Y. }
PadXReflectY = BL_EXTEND_MODE_PAD_X_REFLECT_Y,
{ Repeat X and pad Y. }
RepeatXPadY = BL_EXTEND_MODE_REPEAT_X_PAD_Y,
{ Repeat X and reflect Y. }
RepeatXReflectY = BL_EXTEND_MODE_REPEAT_X_REFLECT_Y,
{ Reflect X and pad Y. }
ReflectXPadY = BL_EXTEND_MODE_REFLECT_X_PAD_Y,
{ Reflect X and repeat Y. }
ReflectXRepeatY = BL_EXTEND_MODE_REFLECT_X_REPEAT_Y);
type
{ Text encoding. }
TBLTextEncoding = (
{ UTF-8 encoding. }
UTF8 = BL_TEXT_ENCODING_UTF8,
{ UTF-16 encoding (native endian). }
UTF16 = BL_TEXT_ENCODING_UTF16,
{ UTF-32 encoding (native endian). }
UTF32 = BL_TEXT_ENCODING_UTF32,
{ LATIN1 encoding (one byte per character). }
Latin1 = BL_TEXT_ENCODING_LATIN1);
{ ============================================================================
[BLRange]
============================================================================ }
type
{ Provides start and end indexes. It's used to specify a range of an operation
related to indexed containers like IBLPath, IBLGradient, etc... }
TBLRange = record
{$REGION 'Internal Declarations'}
private
FHandle: BLRange;
function GetFinish: Integer; inline;
function GetStart: Integer; inline;
procedure SetFinish(const AValue: Integer); inline;
procedure SetStart(const AValue: Integer); inline;
{$ENDREGION 'Internal Declarations'}
public
class operator Equal(const ALeft, ARight: TBLRange): Boolean; inline; static;
class operator NotEqual(const ALeft, ARight: TBLRange): Boolean; inline; static;
public
procedure Reset; overload; inline;
procedure Reset(const AStart, AFinish: Integer); overload; inline;
function Equals(const AOther: TBLRange): Boolean; inline;
property Start: Integer read GetStart write SetStart;
property Finish: Integer read GetFinish write SetFinish;
end;
PBLRange = ^TBLRange;
function BLRange(const AStart, AFinish: Integer): TBLRange; inline;
{$ENDREGION 'General'}
{$REGION 'Array'}
{ ============================================================================
[BLArrayView]
============================================================================ }
type
{ Array view }
TBLArrayView<T> = record
public type
P = ^T;
{$REGION 'Internal Declarations'}
private
FHandle: BLArrayView;
function GetLast: Pointer; inline;
function GetLength: Integer; inline;
{$ENDREGION 'Internal Declarations'}
public
procedure Reset; overload; inline;
procedure Reset(const AData: Pointer; const ALength: Integer); overload; inline;
property Data: Pointer read FHandle.data;
property First: Pointer read FHandle.data;
property Last: Pointer read GetLast;
property Length: Integer read GetLength;
end;
{$ENDREGION 'Array'}
{$REGION 'Color'}
{ ============================================================================
[BLRgba32]
============================================================================ }
type
{ 32-bit RGBA color (8-bit per component) stored as $AARRGGBB. }
TBLRgba32 = record
{$REGION 'Internal Declarations'}
private
FHandle: BLRgba32;
function GetIsOpaque: Boolean; inline;
function GetIsTransparent: Boolean; inline;
{$ENDREGION 'Internal Declarations'}
public
class operator Implicit(const AValue: Cardinal): TBLRgba32; inline; static;
class operator Implicit(const AValue: TBLRgba32): Cardinal; inline; static;
class operator Equal(const ALeft, ARight: TBLRgba32): Boolean; inline; static;
class operator NotEqual(const ALeft, ARight: TBLRgba32): Boolean; inline; static;
public
procedure Reset; overload; inline;
procedure Reset(const AValue: Cardinal); overload; inline;
procedure Reset(const AR, AG, AB: Byte; const AA: Byte = 255); overload; inline;
property R: Byte read FHandle.r write FHandle.r;
property G: Byte read FHandle.g write FHandle.g;
property B: Byte read FHandle.b write FHandle.b;
property A: Byte read FHandle.a write FHandle.a;
property Value: Cardinal read FHandle.value write FHandle.value;
property IsOpaque: Boolean read GetIsOpaque;
property IsTransparent: Boolean read GetIsTransparent;
end;
PBLRgba32 = ^TBLRgba32;
function BLRgba32: TBLRgba32; overload; inline;
function BLRgba32(const AValue: Cardinal): TBLRgba32; overload; inline;
function BLRgba32(const AR, AG, AB: Byte; const AA: Byte = 255): TBLRgba32; overload; inline;
{ ============================================================================
[BLRgba64]
============================================================================ }
type
{ 64-bit RGBA color (16-bit per component) stored as $AAAARRRRGGGGBBBB. }
TBLRgba64 = record
{$REGION 'Internal Declarations'}
private
FHandle: BLRgba64;
function GetIsOpaque: Boolean; inline;
function GetIsTransparent: Boolean; inline;
{$ENDREGION 'Internal Declarations'}
public
class operator Implicit(const AValue: UInt64): TBLRgba64; inline; static;
class operator Implicit(const AValue: TBLRgba64): UInt64; inline; static;
class operator Equal(const ALeft, ARight: TBLRgba64): Boolean; inline; static;
class operator NotEqual(const ALeft, ARight: TBLRgba64): Boolean; inline; static;
public
procedure Reset; overload; inline;
procedure Reset(const AValue: UInt64); overload; inline;
procedure Reset(const AR, AG, AB: Word; const AA: Word = $FFFF); overload; inline;
procedure Reset(const AValue: TBLRgba32); overload; inline;
property R: Word read FHandle.r write FHandle.r;
property G: Word read FHandle.g write FHandle.g;
property B: Word read FHandle.b write FHandle.b;
property A: Word read FHandle.a write FHandle.a;
property Value: UInt64 read FHandle.value write FHandle.value;
property IsOpaque: Boolean read GetIsOpaque;
property IsTransparent: Boolean read GetIsTransparent;
end;
PBLRgba64 = ^TBLRgba64;
function BLRgba64: TBLRgba64; overload; inline;
function BLRgba64(const AValue: UInt64): TBLRgba64; overload; inline;
function BLRgba64(const AR, AG, AB: Word; const AA: Word = $FFFF): TBLRgba64; overload; inline;
function BLRgba64(const AValue: TBLRgba32): TBLRgba64; overload; inline;
{ ============================================================================
[BLRgba]
============================================================================ }
type
{ 128-bit RGBA color stored as 4 32-bit floating point values in [RGBA] order. }
TBLRgba = record
{$REGION 'Internal Declarations'}
private
FHandle: BLRgba;
function GetIsOpaque: Boolean; inline;
function GetIsTransparent: Boolean; inline;
{$ENDREGION 'Internal Declarations'}
public
class operator Equal(const ALeft, ARight: TBLRgba): Boolean; inline; static;
class operator Equal(const ALeft: TBLRgba; const ARight: TBLRgba32): Boolean; inline; static;
class operator Equal(const ALeft: TBLRgba; const ARight: TBLRgba64): Boolean; inline; static;
class operator NotEqual(const ALeft, ARight: TBLRgba): Boolean; inline; static;
class operator NotEqual(const ALeft: TBLRgba; const ARight: TBLRgba32): Boolean; inline; static;
class operator NotEqual(const ALeft: TBLRgba; const ARight: TBLRgba64): Boolean; inline; static;
public
procedure Reset; overload; inline;
procedure Reset(const AR, AG, AB: Single; const AA: Single = 1); overload; inline;
procedure Reset(const ARgba: TBLRgba32); overload; inline;
procedure Reset(const ARgba: TBLRgba64); overload; inline;
property R: Single read FHandle.r write FHandle.r;
property G: Single read FHandle.g write FHandle.g;
property B: Single read FHandle.b write FHandle.b;
property A: Single read FHandle.a write FHandle.a;
property IsOpaque: Boolean read GetIsOpaque;
property IsTransparent: Boolean read GetIsTransparent;
end;
PBLRgba = ^TBLRgba;
function BLRgba: TBLRgba; overload; inline;
function BLRgba(const AR, AG, AB: Single; const AA: Single = 1): TBLRgba; overload; inline;
function BLRgba(const ARgba: TBLRgba32): TBLRgba; overload; inline;
function BLRgba(const ARgba: TBLRgba64): TBLRgba; overload; inline;
type
{ Adds TBLRgba32 <-> TBLRgba64 <-> TBLRgba conversion }
_TBLRgba32Helper = record helper for TBLRgba32
public
procedure Reset(const AValue: TBLRgba64); overload; inline;
procedure Reset(const AValue: TBLRgba); overload; inline;
end;
function BLRgba32(const AValue: TBLRgba64): TBLRgba32; overload; inline;
function BLRgba32(const AValue: TBLRgba): TBLRgba32; overload; inline;
type
{ Adds TBLRgba64 <-> TBLRgba conversion }
_TBLRgba64Helper = record helper for TBLRgba64
public
procedure Reset(const AValue: TBLRgba); overload; inline;
end;
function BLRgba64(const AValue: TBLRgba): TBLRgba32; overload; inline;
{$ENDREGION 'Color'}
{$REGION 'File System'}
{ ============================================================================
[Enums]
============================================================================ }
type
{ File read flags used by IBLFileSystem.ReadFile. }
TBLFileReadFlag = (
{ Use memory mapping to read the content of the file.
The destination buffer would be configured to use the memory mapped buffer
instead of allocating its own. }
MmapEnabled = 0,
{ Avoid memory mapping of small files.
The size of small file is determined by Blend2D, however, you should
expect it to be 16kB or 64kB depending on host operating system. }
MmapAvoidSmall = 1,
{ Do not fallback to regular read if memory mapping fails. It's worth noting
that memory mapping would fail for files stored on filesystem that is not
local (like a mounted network filesystem, etc...). }
MmapNoFallback = 3);
TBLFileReadFlags = set of TBLFileReadFlag;
{$ENDREGION 'File System'}
{$REGION 'Geometry'}
{ ============================================================================
[Enums]
============================================================================ }
type
{ Direction of a geometry used by geometric primitives and paths. }
TBLGeometryDirection = (
{ No direction specified. }
None = BL_GEOMETRY_DIRECTION_NONE,
{ Clockwise direction. }
CW = BL_GEOMETRY_DIRECTION_CW,
{ Counter-clockwise direction. }
CCW = BL_GEOMETRY_DIRECTION_CCW);
type
{ Geometry type.
Geometry describes a shape or path that can be either rendered or added to
a BLPath container. Both IBLPath and IBLContext provide functionality to
work with all geometry types. Please note that each type provided here
requires to pass a matching record to the function that consumes
AGeometryType and AGeometryData arguments. }
TBLGeometryType = (
{ No geometry provided. }
None = BL_GEOMETRY_TYPE_NONE,
{ TBLBoxI record. }
BoxI = BL_GEOMETRY_TYPE_BOXI,
{ TBLBox record. }
BoxD = BL_GEOMETRY_TYPE_BOXD,
{ TBLRectI record. }
RectI = BL_GEOMETRY_TYPE_RECTI,
{ TBLRect record. }
RectD = BL_GEOMETRY_TYPE_RECTD,
{ TBLCircle record. }
Circle = BL_GEOMETRY_TYPE_CIRCLE,
{ TBLEllipse record. }
Ellipse = BL_GEOMETRY_TYPE_ELLIPSE,
{ TBLRoundRect record. }
RoundRect = BL_GEOMETRY_TYPE_ROUND_RECT,
{ TBLArc record. }
Arc = BL_GEOMETRY_TYPE_ARC,
{ TBLArc record representing chord. }
Chord = BL_GEOMETRY_TYPE_CHORD,
{ TBLArc record representing pie. }
Pie = BL_GEOMETRY_TYPE_PIE,
{ TBLLine record. }
Line = BL_GEOMETRY_TYPE_LINE,
{ TBLTriangle record. }
Triangle = BL_GEOMETRY_TYPE_TRIANGLE,
{ TBLArrayView<TBLPointI> representing a polyline. }
PolylineI = BL_GEOMETRY_TYPE_POLYLINEI,
{ TBLArrayView<TBLPoint> representing a polyline. }
PolylineD = BL_GEOMETRY_TYPE_POLYLINED,
{ TBLArrayView<TBLPointI> representing a polygon. }
PolygonI = BL_GEOMETRY_TYPE_POLYGONI,
{ TBLArrayView<TBLPoint> representing a polygon. }
PolygonD = BL_GEOMETRY_TYPE_POLYGOND,
{ TBLArrayView<TBLBoxI> record. }
ArrayViewBoxI = BL_GEOMETRY_TYPE_ARRAY_VIEW_BOXI,
{ TBLArrayView<TBLBox> struct. }
ArrayViewBoxD = BL_GEOMETRY_TYPE_ARRAY_VIEW_BOXD,
{ TBLArrayView<TBLRectI> record. }
ArrayviewRectI = BL_GEOMETRY_TYPE_ARRAY_VIEW_RECTI,
{ TBLArrayView<TBLRect> record. }
ArrayViewRectD = BL_GEOMETRY_TYPE_ARRAY_VIEW_RECTD,
{ IBLPath. }
Path = BL_GEOMETRY_TYPE_PATH,
{ IBLRegion. }
Region = BL_GEOMETRY_TYPE_REGION,
{ The last simple type. }
SimpleLast = TBLGeometryType.Triangle);
type
{ Fill rule. }
TBLFillRule = (
{ Non-zero fill-rule. }
NonZero = BL_FILL_RULE_NON_ZERO,
{ Even-odd fill-rule. }
EvenOdd = BL_FILL_RULE_EVEN_ODD);
type
{ Hit-test result. }
TBLHitTest = (
{ Fully in. }
FullyIn = BL_HIT_TEST_IN,
{ Partially in/out. }
PartiallyIn = BL_HIT_TEST_PART,
{ Fully out. }
FullyOut = BL_HIT_TEST_OUT,
{ Hit test failed (invalid argument, NaNs, etc). }
Invalid = BL_HIT_TEST_INVALID);
{ ============================================================================
[BLPointI]
============================================================================ }
type
{ Point specified as [x, y] using Integer as a storage type. }
TBLPointI = record
{$REGION 'Internal Declarations'}
private
FHandle: BLPointI;
{$ENDREGION 'Internal Declarations'}
public
class operator Equal(const ALeft, ARight: TBLPointI): Boolean; inline; static;
class operator NotEqual(const ALeft, ARight: TBLPointI): Boolean; inline; static;
class operator Negative(const AValue: TBLPointI): TBLPointI; inline; static;
class operator Add(const ALeft: TBLPointI; const ARight: Integer): TBLPointI; inline; static;
class operator Add(const ALeft: Integer; const ARight: TBLPointI): TBLPointI; inline; static;
class operator Add(const ALeft, ARight: TBLPointI): TBLPointI; inline; static;
class operator Subtract(const ALeft: TBLPointI; const ARight: Integer): TBLPointI; inline; static;
class operator Subtract(const ALeft: Integer; const ARight: TBLPointI): TBLPointI; inline; static;
class operator Subtract(const ALeft, ARight: TBLPointI): TBLPointI; inline; static;
class operator Multiply(const ALeft: TBLPointI; const ARight: Integer): TBLPointI; inline; static;
class operator Multiply(const ALeft: Integer; const ARight: TBLPointI): TBLPointI; inline; static;
class operator Multiply(const ALeft, ARight: TBLPointI): TBLPointI; inline; static;
class operator IntDivide(const ALeft: TBLPointI; const ARight: Integer): TBLPointI; inline; static;
class operator IntDivide(const ALeft: Integer; const ARight: TBLPointI): TBLPointI; inline; static;
class operator IntDivide(const ALeft, ARight: TBLPointI): TBLPointI; inline; static;
public
procedure Reset; overload; inline;
procedure Reset(const AX, AY: Integer); overload; inline;
function Equals(const AOther: TBLPointI): Boolean; inline;
property X: Integer read FHandle.x write FHandle.x;
property Y: Integer read FHandle.y write FHandle.y;
end;
PBLPointI = ^TBLPointI;
function BLPointI: TBLPointI; overload; inline;
function BLPointI(const AX, AY: Integer): TBLPointI; overload; inline;
{ ============================================================================
[SizeI]
============================================================================ }
type
{ Size specified as [w, h] using Integer as a storage type. }
TBLSizeI = record
{$REGION 'Internal Declarations'}
private
FHandle: BLSizeI;
{$ENDREGION 'Internal Declarations'}
public
class operator Equal(const ALeft, ARight: TBLSizeI): Boolean; inline; static;
class operator NotEqual(const ALeft, ARight: TBLSizeI): Boolean; inline; static;
public
procedure Reset; overload; inline;
procedure Reset(const AW, AH: Integer); overload; inline;
function Equals(const AOther: TBLSizeI): Boolean; inline;
property W: Integer read FHandle.w write FHandle.w;
property H: Integer read FHandle.h write FHandle.h;
end;
PBLSizeI = ^TBLSizeI;
function BLSizeI: TBLSizeI; overload; inline;
function BLSizeI(const AW, AH: Integer): TBLSizeI; overload; inline;
{ ============================================================================
[BLBoxI]
============================================================================ }
type
{ Box specified as [x0, y0, x1, y1] using Integer as a storage type. }
TBLBoxI = record
{$REGION 'Internal Declarations'}
private
FHandle: BLBoxI;
function GetHeight: Integer; inline;
function GetWidth: Integer; inline;
procedure SetHeight(const AValue: Integer); inline;
procedure SetWidth(const AValue: Integer); inline;
{$ENDREGION 'Internal Declarations'}
public
class operator Equal(const ALeft, ARight: TBLBoxI): Boolean; inline; static;
class operator NotEqual(const ALeft, ARight: TBLBoxI): Boolean; inline; static;
public
procedure Reset; overload; inline;
procedure Reset(const AX0, AY0, AX1, AY1: Integer); overload; inline;
function Equals(const AOther: TBLBoxI): Boolean; inline;
function Contains(const AX, AY: Integer): Boolean; overload; inline;
function Contains(const AP: TBLPointI): Boolean; overload; inline;
property X0: Integer read FHandle.x0 write FHandle.x0;
property Y0: Integer read FHandle.y0 write FHandle.y0;
property X1: Integer read FHandle.x1 write FHandle.x1;
property Y1: Integer read FHandle.y1 write FHandle.y1;
property Width: Integer read GetWidth write SetWidth;
property Height: Integer read GetHeight write SetHeight;
end;
PBLBoxI = ^TBLBoxI;
function BLBoxI: TBLBoxI; overload; inline;
function BLBoxI(const AX0, AY0, AX1, AY1: Integer): TBLBoxI; overload; inline;
{ ============================================================================
[BLRectI]
============================================================================ }
type
{ Rectangle specified as [x, y, w, h] using Integer as a storage type. }
TBLRectI = record
{$REGION 'Internal Declarations'}
private
FHandle: BLRectI;
{$ENDREGION 'Internal Declarations'}
public
class operator Equal(const ALeft, ARight: TBLRectI): Boolean; inline; static;
class operator NotEqual(const ALeft, ARight: TBLRectI): Boolean; inline; static;
public
procedure Reset; overload; inline;
procedure Reset(const AX, AY, AW, AH: Integer); overload; inline;
function Equals(const AOther: TBLRectI): Boolean; inline;
property X: Integer read FHandle.x write FHandle.x;
property Y: Integer read FHandle.y write FHandle.y;
property W: Integer read FHandle.w write FHandle.w;
property H: Integer read FHandle.h write FHandle.h;
end;
PBLRectI = ^TBLRectI;
function BLRectI: TBLRectI; overload; inline;
function BLRectI(const AX, AY, AW, AH: Integer): TBLRectI; overload; inline;
{ ============================================================================
[BLPoint]
============================================================================ }
type
{ Point specified as [x, y] using Double as a storage type. }
TBLPoint = record
{$REGION 'Internal Declarations'}
private
FHandle: BLPoint;
{$ENDREGION 'Internal Declarations'}
public
class operator Equal(const ALeft, ARight: TBLPoint): Boolean; inline; static;
class operator NotEqual(const ALeft, ARight: TBLPoint): Boolean; inline; static;
class operator Negative(const AValue: TBLPoint): TBLPoint; inline; static;
class operator Add(const ALeft: TBLPoint; const ARight: Double): TBLPoint; inline; static;
class operator Add(const ALeft: Double; const ARight: TBLPoint): TBLPoint; inline; static;
class operator Add(const ALeft, ARight: TBLPoint): TBLPoint; inline; static;
class operator Subtract(const ALeft: TBLPoint; const ARight: Double): TBLPoint; inline; static;
class operator Subtract(const ALeft: Double; const ARight: TBLPoint): TBLPoint; inline; static;
class operator Subtract(const ALeft, ARight: TBLPoint): TBLPoint; inline; static;
class operator Multiply(const ALeft: TBLPoint; const ARight: Double): TBLPoint; inline; static;
class operator Multiply(const ALeft: Double; const ARight: TBLPoint): TBLPoint; inline; static;
class operator Multiply(const ALeft, ARight: TBLPoint): TBLPoint; inline; static;
class operator Divide(const ALeft: TBLPoint; const ARight: Double): TBLPoint; inline; static;
class operator Divide(const ALeft: Double; const ARight: TBLPoint): TBLPoint; inline; static;
class operator Divide(const ALeft, ARight: TBLPoint): TBLPoint; inline; static;
public
procedure Reset; overload; inline;
procedure Reset(const AX, AY: Double); overload; inline;
function Equals(const AOther: TBLPoint): Boolean; inline;
property X: Double read FHandle.x write FHandle.x;
property Y: Double read FHandle.y write FHandle.y;