Rogue Wave Views Foundation Package API Reference Guide |
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Bitmap streamer class. More...
#include <ilviews/bitmaps/gif.h>
Public Member Functions | |
IlvGIFStreamer () | |
Constructor. | |
IlBoolean | canRead () const |
Indicates that the instance can read from a stream. More... | |
IlBoolean | canWrite () const |
Indicates that the instance can write to a stream. More... | |
IlBoolean | checkSignature (const IlUChar *data, IlUInt size) |
Checks the signature of the input stream. More... | |
IlBoolean | isGIF87Transparent () const |
Gets whether a GIF87 image is transparent by default. More... | |
IlvBitmapData * | read (std::istream &stream) |
Reads a GIF image from a stream. More... | |
void | setGIF87Transparent (IlBoolean transparent) |
Sets whether a GIF87 image is transparent by default. More... | |
Public Member Functions inherited from IlvBitmapStreamer | |
virtual void | callReadProgressCallback (IlUInt current, IlUInt max) |
Calls the callback for read progression. More... | |
virtual void | callWriteProgressCallback (IlUInt current, IlUInt max) |
Calls the callback for write progression. More... | |
virtual const char * | getName () const |
Returns the internal name of the streamer. More... | |
IlvQuantizer * | getQuantizer () const |
Returns the quantizer used by this streamer. More... | |
virtual IlvBitmapInformation * | readInfo (std::istream &stream) |
Reads information from a stream. More... | |
void | setQuantizer (IlvQuantizer *quantizer) |
Sets the quantizer used (if needed) by this streamer. More... | |
virtual void | setReadProgressCallback (IlvProgressCallback rpCallback, IlAny arg=0) |
Sets the callback for read progression. More... | |
virtual void | setWriteProgressCallback (IlvProgressCallback wpCallback, IlAny arg=0) |
Sets the callback for write progression. More... | |
virtual IlBoolean | write (IlvBitmapData *bitmapData, std::ostream &stream) |
Writes an IlvBitmapData to a stream. More... | |
Public Member Functions inherited from IlvValueInterface | |
virtual IlBoolean | applyValue (const IlvValue &value) |
Apply an accessor. More... | |
virtual IlBoolean | changeValue (const IlvValue &val) |
Changes the value of an accessor. More... | |
virtual IlBoolean | changeValues (const IlvValue *values, IlUShort count=0) |
Changes several accessor values simultaneously. More... | |
virtual void | getAccessors (const IlSymbol *const **names, const IlvValueTypeClass *const **types, IlUInt &count) const |
Retrieves the list of available accessors of an object. More... | |
virtual IlvValue & | queryValue (IlvValue &val) const |
Retrieves an accessor value. More... | |
virtual void | queryValues (IlvValue *values, IlUShort count) const |
Retrieves multiple accessor values simultaneously. More... | |
Additional Inherited Members | |
Static Public Member Functions inherited from IlvBitmapStreamer | |
static IlvBitmapStreamer * | Get (const char *name) |
Returns a streamer from its name. More... | |
static IlvBitmapStreamer ** | GetRegisteredStreamers (IlUInt &count) |
Returns the registered streamers. More... | |
static IlvBitmap * | Read (IlvDisplay *display, std::istream &stream, const IlUChar *signature, IlUInt signatureLen) |
Reads a bitmap using the registered streamers. More... | |
static IlvBitmapData * | ReadBitmapData (std::istream &stream, const IlUChar *signature, IlUInt signatureLen) |
Reads bitmap data using the registered streamers. More... | |
static IlvBitmapInformation * | ReadInfo (std::istream &stream, const IlUChar *signature, IlUInt signatureLen) |
Reads bitmap information using the registered streamers. More... | |
static void | Register (IlvBitmapStreamer *streamer) |
Registers the given streamer. More... | |
static IlBoolean | UnRegister (IlvBitmapStreamer *streamer) |
Unregisters the given streamer. More... | |
Bitmap streamer class.
Library: xviews or winviews or mviews (mutually exclusive)
This streamer provides methods to deal with a stream containing a Compuserve GIF image.
This streamer can only read images, but is unable to save them.
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virtual |
Indicates that the instance can read from a stream.
IlTrue
. Reimplemented from IlvBitmapStreamer.
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virtual |
Indicates that the instance can write to a stream.
IlFalse:
there is no means to serialize an image using the GIF format with Rogue Wave Views. Reimplemented from IlvBitmapStreamer.
Checks the signature of the input stream.
data | The data containing the signature of the stream. |
size | The size of the data containing the signature. |
IlTrue
if the data contains a GIF signature. Implements IlvBitmapStreamer.
IlBoolean IlvGIFStreamer::isGIF87Transparent | ( | ) | const |
Gets whether a GIF87 image is transparent by default.
IlTrue
if the image is transparent.
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virtual |
Reads a GIF image from a stream.
stream | The stream to read from. |
Reimplemented from IlvBitmapStreamer.
void IlvGIFStreamer::setGIF87Transparent | ( | IlBoolean | transparent | ) |
Sets whether a GIF87 image is transparent by default.
transparent | IlTrue if the image is transparent. |
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