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Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: fs_mem.h
	3	// Purpose: interface of wxMemoryFSHandler
	4	// Author: wxWidgets team
	5	// RCS-ID: $Id$
	6	// Licence: wxWindows license
	7	/////////////////////////////////////////////////////////////////////////////
	8
	9	/**
	10	@class wxMemoryFSHandler
	11
	12	This wxFileSystem handler can store arbitrary data in memory stream and make
	13	them accessible via an URL.
	14
	15	It is particularly suitable for storing bitmaps from resources or included XPM
	16	files so that they can be used with wxHTML.
	17
	18	Filenames are prefixed with @c "memory:", e.g. @c "memory:myfile.html".
	19
	20	Example:
	21
	22	@code
	23	#ifndef __WXMSW__
	24	#include "logo.xpm"
	25	#endif
	26
	27	void MyFrame::OnAbout(wxCommandEvent&)
	28	{
	29	wxBusyCursor bcur;
	30	wxFileSystem::AddHandler(new wxMemoryFSHandler);
	31	wxMemoryFSHandler::AddFile("logo.pcx", wxBITMAP(logo), wxBITMAP_TYPE_PCX);
	32	wxMemoryFSHandler::AddFile("about.htm",
	33	"<html><body>About: "
	34	"<img src=\"memory:logo.pcx\"></body></html>");
	35
	36	wxDialog dlg(this, -1, wxString(_("About")));
	37	wxBoxSizer *topsizer;
	38	wxHtmlWindow *html;
	39	topsizer = new wxBoxSizer(wxVERTICAL);
	40	html = new wxHtmlWindow(&dlg, -1, wxDefaultPosition,
	41	wxSize(380, 160), wxHW_SCROLLBAR_NEVER);
	42	html->SetBorders(0);
	43	html->LoadPage("memory:about.htm");
	44	html->SetSize(html->GetInternalRepresentation()->GetWidth(),
	45	html->GetInternalRepresentation()->GetHeight());
	46	topsizer->Add(html, 1, wxALL, 10);
	47	topsizer->Add(new wxStaticLine(&dlg, -1), 0, wxEXPAND \| wxLEFT \| wxRIGHT, 10);
	48	topsizer->Add(new wxButton(&dlg, wxID_OK, "Ok"),
	49	0, wxALL \| wxALIGN_RIGHT, 15);
	50	dlg.SetAutoLayout(true);
	51	dlg.SetSizer(topsizer);
	52	topsizer->Fit(&dlg);
	53	dlg.Centre();
	54	dlg.ShowModal();
	55
	56	wxMemoryFSHandler::RemoveFile("logo.pcx");
	57	wxMemoryFSHandler::RemoveFile("about.htm");
	58	}
	59	@endcode
	60
	61	@library{wxbase}
	62	@category{vfs}
	63
	64	@see wxMemoryFSHandler::AddFileWithMimeType
	65	*/
	66	class wxMemoryFSHandler : public wxFileSystemHandler
	67	{
	68	public:
	69	/**
	70	Constructor.
	71	*/
	72	wxMemoryFSHandler();
	73
	74	//@{
	75	/**
	76	Adds a file to the list of the files stored in memory.
	77
	78	Stored data (bitmap, text or raw data) will be copied into private memory
	79	stream and available under name @c "memory:" + @e filename.
	80
	81	@note you must use a @a type value (aka image format) that wxWidgets
	82	can save (e.g. JPG, PNG, see wxImage documentation)!
	83
	84	@see AddFileWithMimeType()
	85	*/
	86	static void AddFile(const wxString& filename, wxImage& image, wxBitmapType type);
	87	static void AddFile(const wxString& filename, const wxBitmap& bitmap, wxBitmapType type);
	88	//@}
	89
	90	//@{
	91	/**
	92	Like AddFile(), but lets you explicitly specify added file's MIME type.
	93
	94	This version should be used whenever you know the MIME type, because it
	95	makes accessing the files faster.
	96
	97	@since 2.8.5
	98
	99	@see AddFile()
	100	*/
	101	static void AddFileWithMimeType(const wxString& filename,
	102	const wxString& textdata,
	103	const wxString& mimetype);
	104	static void AddFileWithMimeType(const wxString& filename,
	105	const void* binarydata,
	106	size_t size,
	107	const wxString& mimetype);
	108	//@}
	109
	110	/**
	111	Removes a file from memory FS and frees the occupied memory.
	112	*/
	113	static void RemoveFile(const wxString& filename);
	114	};
	115