78 lines
2.0 KiB
GDScript
78 lines
2.0 KiB
GDScript
# Most of that code is stolen from Pixelorama
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extends Node
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signal in_focus
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signal file_loaded(file_name, file_type, file_data)
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func _ready() -> void:
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if OS.get_name() == "HTML5" and OS.has_feature("JavaScript"):
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JavaScript.eval(
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"""
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var fileData;
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var fileType;
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var fileName;
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var canceled;
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function loadFile(accept = "") {
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canceled = true;
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var input = document.createElement('INPUT');
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input.setAttribute("type", "file");
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if (accept != "") {
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input.setAttribute("accept", accept);
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}
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input.click();
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input.addEventListener('change', event => {
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if (event.target.files.length > 0) {
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canceled = false;
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}
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var file = event.target.files[0];
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var reader = new FileReader();
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fileType = file.type;
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fileName = file.name;
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reader.readAsArrayBuffer(file);
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reader.onloadend = function (evt) {
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if (evt.target.readyState == FileReader.DONE) {
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fileData = evt.target.result;
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}
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}
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});
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}
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""",
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true
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)
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func _notification(notification: int) -> void:
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if notification == MainLoop.NOTIFICATION_WM_FOCUS_IN:
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emit_signal("in_focus")
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func load_file(accept : String = ""):
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if OS.get_name() != "HTML5" or !OS.has_feature("JavaScript"):
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return
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if accept == "":
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JavaScript.eval("loadFile();", true)
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else:
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JavaScript.eval("loadFile(\""+accept+"\");", true)
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yield(self, "in_focus") # Wait until JS prompt is closed
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yield(get_tree().create_timer(0.5), "timeout") # Give some time for async JS data load
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if JavaScript.eval("canceled;", true): # If File Dialog closed w/o file
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return
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# Use data from png data
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var file_data
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while true:
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file_data = JavaScript.eval("fileData;", true)
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if file_data != null:
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break
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yield(get_tree().create_timer(1.0), "timeout") # Need more time to load data
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var file_name = JavaScript.eval("fileName;", true)
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var file_type = JavaScript.eval("fileType;", true)
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emit_signal("file_loaded", file_name, file_type, file_data.get_string_from_ascii())
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