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//
// tabletext.js - display Japanese text as a table using DHTML.
//
// Copyright (C) 2005 Satoru Takabayashi <satoru@namazu.org>
// All rights reserved.
// This is free software with ABSOLUTELY NO WARRANTY.
//
// You can redistribute it and/or modify it under the terms of
// the GNU General Public License version 2.
//
function makeChar(bitmap) {
var table = document.createElement("table");
table.className = "char";
var tbody = document.createElement("tbody");
for (var i = 0; i < 16; ++i) {
var tr = document.createElement("tr");
var row = bitmap[i];
for (var j = 15; j >= 0; --j) {
var td = document.createElement("td");
if (row & (1 << j)) {
td.className = "black";
} else {
td.className = "white";
}
td.appendChild(document.createTextNode(""));
tr.appendChild(td);
}
tbody.appendChild(tr);
}
table.appendChild(tbody);
return table;
}
function getBitmap(code) {
return font[code];
}
function rotate180(bitmap) {
var rotated = bitmap.concat().reverse(); // concat == copy
for (var i = 0; i < 16; ++i) {
var value = rotated[i];
rotated[i] =
((value & 0x0001) << 15) |
((value & 0x0002) << 13) |
((value & 0x0004) << 11) |
((value & 0x0008) << 9) |
((value & 0x0010) << 7) |
((value & 0x0020) << 5) |
((value & 0x0040) << 3) |
((value & 0x0080) << 1) |
((value & 0x0100) >> 1) |
((value & 0x0200) >> 3) |
((value & 0x0400) >> 5) |
((value & 0x0800) >> 7) |
((value & 0x1000) >> 9) |
((value & 0x2000) >> 11) |
((value & 0x4000) >> 13) |
((value & 0x8000) >> 15);
}
return rotated;
}
function printTextCommon(index, filter) {
var table = document.createElement("table");
table.className = "text";
var tbody = document.createElement("tbody");
var tr = document.createElement("tr");
var bitmap = font[index];
if (bitmap) {
if (filter) {
bitmap = filter(bitmap);
}
var chr = makeChar(bitmap);
var td = document.createElement("td");
td.appendChild(chr);
tr.appendChild(td);
}
tbody.appendChild(tr);
table.appendChild(tbody);
return table;
}
function printText(text) {
var table = printTextCommon(text);
var div = document.getElementById("tabletext");
if (div) {
div.appendChild(table);
}
}
function printUpsideDownText(text) {
var table = printTextCommon(text, rotate180);
var div = document.getElementById("tabletext");
if (div) {
div.appendChild(table);
}
}
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