SLIOStream implementation to display PNG files in a browser popup. More...

#include <SLIOBrowserPopup.h>

Inheritance diagram for SLIOWriterBrowserPopup:

Public Member Functions
	SLIOWriterBrowserPopup (std::string path)

	~SLIOWriterBrowserPopup ()

void	flush ()

Public Member Functions inherited from SLIOWriterMemory
	SLIOWriterMemory (std::string path)

size_t	write (const void *buffer, size_t size)

size_t	tell ()

bool	seek (size_t offset, Origin origin)

void	flush ()

Public Member Functions inherited from SLIOStream
virtual	~SLIOStream ()=default

virtual size_t	read (void *buffer, size_t size)

virtual size_t	size ()

Additional Inherited Members
Public Types inherited from SLIOStream
enum	Origin { IOO_beg , IOO_cur , IOO_end }

Protected Attributes inherited from SLIOWriterMemory
std::string	_path

size_t	_position

Detailed Description

SLIOStream implementation to display PNG files in a browser popup.

The popup with the PNG image is opened when SLIOWriterBrowserPopup::flush is called. The popup contains a link for the user to download the file.

Definition at line 23 of file SLIOBrowserPopup.h.

Constructor & Destructor Documentation

◆ SLIOWriterBrowserPopup()

SLIOWriterBrowserPopup::SLIOWriterBrowserPopup ( std::string path )

Definition at line 16 of file SLIOBrowserPopup.cpp.

   : SLIOWriterMemory(path)
 {
     assert(Utils::endsWithString(path, ".png") && "SLIOWriteBrowserDisplay only supports PNG files");
 }

◆ ~SLIOWriterBrowserPopup()

SLIOWriterBrowserPopup::~SLIOWriterBrowserPopup ( )

Definition at line 22 of file SLIOBrowserPopup.cpp.

 {
     SLIOMemory::clear(_path);
 }

Member Function Documentation

◆ flush()

void SLIOWriterBrowserPopup::flush ( )

virtual

Reimplemented from SLIOStream.

Definition at line 27 of file SLIOBrowserPopup.cpp.

 {
     std::vector<char>& buffer = SLIOMemory::get(_path);
     const char*        data   = buffer.data();
     size_t             length = buffer.size();
  
     std::string filename = Utils::getFileName(_path);
  
     // clang-format off
     MAIN_THREAD_EM_ASM({
         let path = UTF8ToString($0);
         let section = HEAPU8.subarray($1, $1 + $2);
         let array = new Uint8Array(section);
         let blob = new Blob([array], {"type": "image/png"});
         globalThis.snapshotURL = URL.createObjectURL(blob);
  
         let link = document.querySelector("#snapshot-download");
         link.href = snapshotURL;
         link.download = path;
  
         document.querySelector("#snapshot-image").src = snapshotURL;
         document.querySelector("#snapshot-overlay").classList.add("visible");
     }, filename.c_str(), data, length);
     // clang-format on
 }

The documentation for this class was generated from the following files: