GI.GdkPixbuf.Structs.PixbufModulePattern

The signature prefix for a module.

The signature of a module is a set of prefixes. Prefixes are encoded as pairs of ordinary strings, where the second string, called the mask, if not NULL, must be of the same length as the first one and may contain ' ', '!', 'x', 'z', and 'n' to indicate bytes that must be matched, not matched, "don't-care"-bytes, zeros and non-zeros, respectively.

Each prefix has an associated integer that describes the relevance of the prefix, with 0 meaning a mismatch and 100 a "perfect match".

Starting with gdk-pixbuf 2.8, the first byte of the mask may be '*', indicating an unanchored pattern that matches not only at the beginning, but also in the middle. Versions prior to 2.8 will interpret the '*' like an 'x'.

The signature of a module is stored as an array of GdkPixbufModulePatterns. The array is terminated by a pattern where the prefix is NULL.

c code

GdkPixbufModulePattern *signature[] = {
  { "abcdx", " !x z", 100 },
  { "bla", NULL,  90 },
  { NULL, NULL, 0 }
};

In the example above, the signature matches e.g. "auud\0" with relevance 100, and "blau" with relevance 90.

Since: 2.2

Exported types

newtype PixbufModulePattern

Memory-managed wrapper type.

Constructors

PixbufModulePattern (ManagedPtr PixbufModulePattern)

Instances

Eq PixbufModulePattern

Defined in GI.GdkPixbuf.Structs.PixbufModulePattern

Methods

(==) :: PixbufModulePattern -> PixbufModulePattern -> Bool

(/=) :: PixbufModulePattern -> PixbufModulePattern -> Bool

BoxedPtr PixbufModulePattern

Defined in GI.GdkPixbuf.Structs.PixbufModulePattern

Methods

boxedPtrCopy :: PixbufModulePattern -> IO PixbufModulePattern

boxedPtrFree :: PixbufModulePattern -> IO ()

CallocPtr PixbufModulePattern

Defined in GI.GdkPixbuf.Structs.PixbufModulePattern

Methods

boxedPtrCalloc :: IO (Ptr PixbufModulePattern)

ManagedPtrNewtype PixbufModulePattern

Defined in GI.GdkPixbuf.Structs.PixbufModulePattern

Methods

toManagedPtr :: PixbufModulePattern -> ManagedPtr PixbufModulePattern

tag ~ 'AttrSet => Constructible PixbufModulePattern tag

Defined in GI.GdkPixbuf.Structs.PixbufModulePattern

Methods

new :: MonadIO m => (ManagedPtr PixbufModulePattern -> PixbufModulePattern) -> [AttrOp PixbufModulePattern tag] -> m PixbufModulePattern

newZeroPixbufModulePattern :: MonadIO m => m PixbufModulePattern

Construct a PixbufModulePattern struct initialized to zero.

Methods

Properties

mask

mask containing bytes which modify how the prefix is matched against test data

clearPixbufModulePatternMask :: MonadIO m => PixbufModulePattern -> m ()

Set the value of the “mask” field to Nothing. When overloading is enabled, this is equivalent to

clear #mask

getPixbufModulePatternMask :: MonadIO m => PixbufModulePattern -> m (Maybe Text)

Get the value of the “mask” field. When overloading is enabled, this is equivalent to

get pixbufModulePattern #mask

setPixbufModulePatternMask :: MonadIO m => PixbufModulePattern -> CString -> m ()

Set the value of the “mask” field. When overloading is enabled, this is equivalent to

set pixbufModulePattern [ #mask := value ]

prefix

the prefix for this pattern

clearPixbufModulePatternPrefix :: MonadIO m => PixbufModulePattern -> m ()

Set the value of the “prefix” field to Nothing. When overloading is enabled, this is equivalent to

clear #prefix

getPixbufModulePatternPrefix :: MonadIO m => PixbufModulePattern -> m (Maybe Text)

Get the value of the “prefix” field. When overloading is enabled, this is equivalent to

get pixbufModulePattern #prefix

setPixbufModulePatternPrefix :: MonadIO m => PixbufModulePattern -> CString -> m ()

Set the value of the “prefix” field. When overloading is enabled, this is equivalent to

set pixbufModulePattern [ #prefix := value ]

relevance

relevance of this pattern

getPixbufModulePatternRelevance :: MonadIO m => PixbufModulePattern -> m Int32

Get the value of the “relevance” field. When overloading is enabled, this is equivalent to

get pixbufModulePattern #relevance

setPixbufModulePatternRelevance :: MonadIO m => PixbufModulePattern -> Int32 -> m ()

Set the value of the “relevance” field. When overloading is enabled, this is equivalent to

set pixbufModulePattern [ #relevance := value ]