#include <wx/fs_mem.h>
This wxFileSystem handler can store arbitrary data in memory stream and make them accessible via an URL.
It is particularly suitable for storing bitmaps from resources or included XPM files so that they can be used with wxHTML or wxWebView.
Filenames are prefixed with "memory:"
, e.g. "memory:myfile.html"
.
Example:
Public Member Functions | |
wxMemoryFSHandler () | |
Constructor. More... | |
Public Member Functions inherited from wxFileSystemHandler | |
wxFileSystemHandler () | |
Constructor. More... | |
virtual bool | CanOpen (const wxString &location)=0 |
Returns true if the handler is able to open this file. More... | |
virtual wxString | FindFirst (const wxString &wildcard, int flags=0) |
Works like wxFindFirstFile(). More... | |
virtual wxString | FindNext () |
Returns next filename that matches parameters passed to wxFileSystem::FindFirst. More... | |
virtual wxFSFile * | OpenFile (wxFileSystem &fs, const wxString &location)=0 |
Opens the file and returns wxFSFile pointer or nullptr if failed. More... | |
Public Member Functions inherited from wxObject | |
wxObject () | |
Default ctor; initializes to nullptr the internal reference data. More... | |
wxObject (const wxObject &other) | |
Copy ctor. More... | |
virtual | ~wxObject () |
Destructor. More... | |
virtual wxClassInfo * | GetClassInfo () const |
This virtual function is redefined for every class that requires run-time type information, when using the wxDECLARE_CLASS macro (or similar). More... | |
wxObjectRefData * | GetRefData () const |
Returns the wxObject::m_refData pointer, i.e. the data referenced by this object. More... | |
bool | IsKindOf (const wxClassInfo *info) const |
Determines whether this class is a subclass of (or the same class as) the given class. More... | |
bool | IsSameAs (const wxObject &obj) const |
Returns true if this object has the same data pointer as obj. More... | |
void | Ref (const wxObject &clone) |
Makes this object refer to the data in clone. More... | |
void | SetRefData (wxObjectRefData *data) |
Sets the wxObject::m_refData pointer. More... | |
void | UnRef () |
Decrements the reference count in the associated data, and if it is zero, deletes the data. More... | |
void | UnShare () |
This is the same of AllocExclusive() but this method is public. More... | |
void | operator delete (void *buf) |
The delete operator is defined for debugging versions of the library only, when the identifier __WXDEBUG__ is defined. More... | |
void * | operator new (size_t size, const wxString &filename=nullptr, int lineNum=0) |
The new operator is defined for debugging versions of the library only, when the identifier __WXDEBUG__ is defined. More... | |
Static Public Member Functions | |
static void | RemoveFile (const wxString &filename) |
Removes a file from memory FS and frees the occupied memory. More... | |
static void | AddFile (const wxString &filename, wxImage &image, wxBitmapType type) |
Adds a file to the list of the files stored in memory. More... | |
static void | AddFile (const wxString &filename, const wxBitmap &bitmap, wxBitmapType type) |
Adds a file to the list of the files stored in memory. More... | |
static void | AddFile (const wxString &filename, const wxString &textdata) |
Adds a file to the list of the files stored in memory. More... | |
static void | AddFile (const wxString &filename, const void *binarydata, size_t size) |
Adds a file to the list of the files stored in memory. More... | |
static void | AddFileWithMimeType (const wxString &filename, const wxString &textdata, const wxString &mimetype) |
Like AddFile(), but lets you explicitly specify added file's MIME type. More... | |
static void | AddFileWithMimeType (const wxString &filename, const void *binarydata, size_t size, const wxString &mimetype) |
Like AddFile(), but lets you explicitly specify added file's MIME type. More... | |
Static Public Member Functions inherited from wxFileSystemHandler | |
static wxString | GetMimeTypeFromExt (const wxString &location) |
Returns the MIME type based on extension of location. More... | |
Additional Inherited Members | |
Protected Member Functions inherited from wxObject | |
void | AllocExclusive () |
Ensure that this object's data is not shared with any other object. More... | |
virtual wxObjectRefData * | CreateRefData () const |
Creates a new instance of the wxObjectRefData-derived class specific to this object and returns it. More... | |
virtual wxObjectRefData * | CloneRefData (const wxObjectRefData *data) const |
Creates a new instance of the wxObjectRefData-derived class specific to this object and initializes it copying data. More... | |
Static Protected Member Functions inherited from wxFileSystemHandler | |
static wxString | GetAnchor (const wxString &location) |
Returns the anchor if present in the location. More... | |
static wxString | GetLeftLocation (const wxString &location) |
Returns the left location string extracted from location. More... | |
static wxString | GetProtocol (const wxString &location) |
Returns the protocol string extracted from location. More... | |
static wxString | GetRightLocation (const wxString &location) |
Returns the right location string extracted from location. More... | |
Protected Attributes inherited from wxObject | |
wxObjectRefData * | m_refData |
Pointer to an object which is the object's reference-counted data. More... | |
wxMemoryFSHandler::wxMemoryFSHandler | ( | ) |
Constructor.
|
static |
Adds a file to the list of the files stored in memory.
Stored data (bitmap, text or raw data) will be copied into private memory stream and available under name "memory:"
+ filename.
When using the overload taking wxString
data, if the string contains only Latin-1 characters (which includes strings created using wxString::From8BitData()), its data is used as is. Otherwise, the UTF-8 representation of the string is stored as the data associated with the given filename.
|
static |
Adds a file to the list of the files stored in memory.
Stored data (bitmap, text or raw data) will be copied into private memory stream and available under name "memory:"
+ filename.
When using the overload taking wxString
data, if the string contains only Latin-1 characters (which includes strings created using wxString::From8BitData()), its data is used as is. Otherwise, the UTF-8 representation of the string is stored as the data associated with the given filename.
|
static |
Adds a file to the list of the files stored in memory.
Stored data (bitmap, text or raw data) will be copied into private memory stream and available under name "memory:"
+ filename.
When using the overload taking wxString
data, if the string contains only Latin-1 characters (which includes strings created using wxString::From8BitData()), its data is used as is. Otherwise, the UTF-8 representation of the string is stored as the data associated with the given filename.
|
static |
Adds a file to the list of the files stored in memory.
Stored data (bitmap, text or raw data) will be copied into private memory stream and available under name "memory:"
+ filename.
When using the overload taking wxString
data, if the string contains only Latin-1 characters (which includes strings created using wxString::From8BitData()), its data is used as is. Otherwise, the UTF-8 representation of the string is stored as the data associated with the given filename.
|
static |
Removes a file from memory FS and frees the occupied memory.