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This commit is contained in:
Jeff Epler 2020-12-31 12:33:22 -06:00
parent 17ef3559fe
commit f64083083f
2 changed files with 49 additions and 46 deletions
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15
bdftopcf.c
View file

@ -46,22 +46,18 @@ from The Open Group.
int
main(int argc, char *argv[])
{
puts("Click Browse and select a BDF font to convert");
fflush(stdout);
}
EMSCRIPTEN_KEEPALIVE
int font_convert() {
const char *input_name = "/input.bdf", *output_name="/output.pcf";
FontRec font = { 0 };
FontFilePtr input = NULL, output = NULL;
int bit, byte, glyph, scan;
FontDefaultFormat(&bit, &byte, &glyph, &scan);
const char *input_name = "/input.bdf", *output_name="/output.pcf";
FontRec font = { 0 };
FontFilePtr input = NULL, output = NULL;
fprintf(stderr, "opening %s\n", input_name); fflush(stderr);
input = FontFileOpen(input_name);
fprintf(stderr, "opened %s\n", input_name); fflush(stderr);
output = FontFileOpenWrite(output_name);
int result = Successful;
if (!input) {
@ -81,9 +77,8 @@ fprintf(stderr, "opened %s\n", input_name); fflush(stderr);
fprintf(stderr, "bdf input, corrupt\n");
}
}
fprintf(stderr, "result=%d\n", result);
if (result == Successful) {
fprintf(stderr, "inexplicably writing font\n"); fflush(stderr);
fprintf(stderr, "preparing output font\n"); fflush(stderr);
result = pcfWriteFont(&font, output);
if (result != Successful) {
@ -91,10 +86,8 @@ fprintf(stderr, "inexplicably writing font\n"); fflush(stderr);
remove(output_name);
}
}
fprintf(stderr, "closing input? %p\n", input); fflush(stderr);
if (input)
FontFileClose(input);
fprintf(stderr, "closing output? %p\n", output); fflush(stderr);
if (output)
FontFileClose(output);
return (result == Successful);

80
shell.html
View file

@ -5,9 +5,17 @@
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>bdftopcf font converter</title>
<style>
.emscripten { padding-right: 0; margin-left: auto; margin-right: auto; display: block; }
form label, form button {
background-color: #7F9CCB;
padding: 5px 10px;
border-radius: 5px;
border: 1px ridge black;
font-size: 0.8rem;
height: auto;
}
.emscripten { display: block; }
textarea.emscripten { font-family: monospace; width: 80%; }
div.emscripten { text-align: center; }
div.emscripten_border { border: 1px solid black; }
/* the canvas *must not* have any border or padding, or mouse coords will be wrong */
canvas.emscripten { border: 0px none; background-color: black; }
@ -47,6 +55,8 @@
</style>
</head>
<body>
Convert a font in BDF format to PCF format for use with CircuitPython. CircuitPython can load PCF files more quickly, and they are also somewhat smaller.
<figure style="overflow:visible;" id="spinner"><div class="spinner"></div><center style="margin-top:0.5em"><strong>emscripten</strong></center></figure>
<div class="emscripten" id="status">Downloading...</div>
<div class="emscripten">
@ -54,47 +64,45 @@
</div>
<form method="POST" enctype="multipart/form-data">
<label for="bdffont">Upload BDF font: <input type="file" id="bdffont" name="bdffont" accept=".bdf"/>
<label for="bdffont">Browse</label><input type="file" id="bdffont" name="bdffont" accept=".bdf" style="opacity:0"/>
<br>
<!-- <input type="submit" value="Convert" onSubmit="return convert_me()"/> -->
</form>
<hr>
<br/>
<div id="outputDiv"/>
<textarea class="emscripten" id="output" rows="8"></textarea>
<textarea class="emscripten" id="output" rows="8" style="display:none"></textarea>
<script type='text/javascript'>
function downloadData(name, data) {
var as_str = String.fromCharCode.apply(null, data);
var datauri = "data:application/binary;base64," + btoa(as_str)
var link = document.createElement("a");
link.download = name;
link.href = datauri;
link.target = "blank";
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
delete link;
}
function downloadData(name, data) {
var as_str = String.fromCharCode.apply(null, data);
var datauri = "data:application/binary;base64," + btoa(as_str)
var link = document.createElement("a");
link.download = name;
link.href = datauri;
link.target = "blank";
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
delete link;
}
document.querySelector('#bdffont').addEventListener('change', (event) => {
console.log("convert_me");
var file = document.getElementById("bdffont");
if (file.files.length) {
var reader = new FileReader();
reader.onload = function(e) {
FS.writeFile("/input.bdf", e.target.result);
// Module._font_convert("/input.bdf", "/output.pcf");
var result = Module._font_convert();
console.log("result = " + result);
var ofn = file.value.replace(/.*[/\\]/, "").replace(/\.bdf$/i, "") + ".pcf"
if(result != 0) {
downloadData(ofn, FS.readFile("/output.pcf"));
}
}
reader.readAsBinaryString(file.files[0]);
}
return false;
document.querySelector('#bdffont').addEventListener('change', (event) => {
var file = document.getElementById("bdffont");
if (file.files.length) {
var reader = new FileReader();
reader.onload = function(e) {
FS.writeFile("/input.bdf", e.target.result);
// Module._font_convert("/input.bdf", "/output.pcf");
var result = Module._font_convert();
var ofn = file.value.replace(/.*[/\\]/, "").replace(/\.bdf$/i, "") + ".pcf"
if(result != 0) {
downloadData(ofn, FS.readFile("/output.pcf"));
}
}
reader.readAsBinaryString(file.files[0]);
}
return false;
});
var statusElement = document.getElementById('status');
var progressElement = document.getElementById('progress');
@ -116,6 +124,7 @@
//text = text.replace('\n', '<br>', 'g');
console.log(text);
if (element) {
element.style = ""
element.value += text + "\n";
element.scrollTop = element.scrollHeight; // focus on bottom
}
@ -126,6 +135,7 @@
if (0) { // XXX disabled for safety typeof dump == 'function') {
dump(text + '\n'); // fast, straight to the real console
} else {
outputElement.style = ""
outputElement.value += text + "\n";
outputElement.scrollTop = outputElement.scrollHeight; // focus on bottom
console.error(text);