Mon 21 Jul 22:43:21 CEST 2025

js/term/widgets/bigtext.js

@@ -0,0 +1,185 @@
+/**
+ **      ==============================
+ **       O           O      O   OOOO
+ **       O           O     O O  O   O
+ **       O           O     O O  O   O
+ **       OOOO   OOOO O     OOO  OOOO
+ **       O   O       O    O   O O   O
+ **       O   O       O    O   O O   O
+ **       OOOO        OOOO O   O OOOO
+ **      ==============================
+ **      Dr. Stefan Bosse http://www.bsslab.de
+ **
+ **      COPYRIGHT: THIS SOFTWARE, EXECUTABLE AND SOURCE CODE IS OWNED
+ **                 BY THE AUTHOR(S).
+ **                 THIS SOURCE CODE MAY NOT BE COPIED, EXTRACTED,
+ **                 MODIFIED, OR OTHERWISE USED IN A CONTEXT
+ **                 OUTSIDE OF THE SOFTWARE SYSTEM.
+ **
+ **    $AUTHORS:     Christopher Jeffrey, Stefan Bosse
+ **    $INITIAL:     (C) 2013-2015, Christopher Jeffrey and contributors
+ **    $MODIFIED:    by sbosse
+ **    $REVESIO:     1.2.1
+ **
+ **    $INFO:
+ **
+ **    bigtext.js - bigtext element for blessed
+ **
+ **    $ENDOFINFO
+ */
+
+/**
+ * Modules
+ */
+var Comp = Require('com/compat');
+
+var fs = require('fs');
+
+var Node = Require('term/widgets/node');
+var Box = Require('term/widgets/box');
+
+/**
+ * BigText
+ */
+
+function BigText(options) {
+  if (!instanceOf(this instanceof Node)) {
+    return new BigText(options);
+  }
+  options = options || {};
+  options.font = options.font
+    || __dirname + '/../../usr/fonts/ter-u14n.json';
+  options.fontBold = options.font
+    || __dirname + '/../../usr/fonts/ter-u14b.json';
+  this.fch = options.fch;
+  this.ratio = {};
+  this.font = this.loadFont(options.font);
+  this.fontBold = this.loadFont(options.font);
+  Box.call(this, options);
+  if (this.style.bold) {
+    this.font = this.fontBold;
+  }
+}
+
+//BigText.prototype.__proto__ = Box.prototype;
+inheritPrototype(BigText,Box);
+
+BigText.prototype.type = 'bigtext';
+
+BigText.prototype.loadFont = function(filename) {
+  var self = this
+    , data
+    , font;
+
+  data = JSON.parse(fs.readFileSync(filename, 'utf8'));
+
+  this.ratio.width = data.width;
+  this.ratio.height = data.height;
+
+  function convertLetter(ch, lines) {
+    var line, i;
+
+    while (lines.length > self.ratio.height) {
+      lines.shift();
+      lines.pop();
+    }
+
+    lines = lines.map(function(line) {
+      var chs = line.split('');
+      chs = chs.map(function(ch) {
+        return ch === ' ' ? 0 : 1;
+      });
+      while (chs.length < self.ratio.width) {
+        chs.push(0);
+      }
+      return chs;
+    });
+
+    while (lines.length < self.ratio.height) {
+      line = [];
+      for (i = 0; i < self.ratio.width; i++) {
+        line.push(0);
+      }
+      lines.push(line);
+    }
+
+    return lines;
+  }
+
+  font = Object.keys(data.glyphs).reduce(function(out, ch) {
+    var lines = data.glyphs[ch].map;
+    out[ch] = convertLetter(ch, lines);
+    return out;
+  }, {});
+
+  delete font[' '];
+
+  return font;
+};
+
+BigText.prototype.setContent = function(content) {
+  this.content = '';
+  this.text = content || '';
+};
+
+BigText.prototype.render = function() {
+  if (this.position.width == null || this._shrinkWidth) {
+    // if (this.width - this.iwidth < this.ratio.width * this.text.length + 1) {
+      this.position.width = this.ratio.width * this.text.length + 1;
+      this._shrinkWidth = true;
+    // }
+  }
+  if (this.position.height == null || this._shrinkHeight) {
+    // if (this.height - this.iheight < this.ratio.height + 0) {
+      this.position.height = this.ratio.height + 0;
+      this._shrinkHeight = true;
+    // }
+  }
+
+  var coords = this._render();
+  if (!coords) return;
+
+  var lines = this.screen.lines
+    , left = coords.xi + this.ileft
+    , top = coords.yi + this.itop
+    , right = coords.xl - this.iright
+    , bottom = coords.yl - this.ibottom;
+
+  var dattr = this.sattr(this.style)
+    , bg = dattr & 0x1ff
+    , fg = (dattr >> 9) & 0x1ff
+    , flags = (dattr >> 18) & 0x1ff
+    , attr = (flags << 18) | (bg << 9) | fg;
+
+  for (var x = left, i = 0; x < right; x += this.ratio.width, i++) {
+    var ch = this.text[i];
+    if (!ch) break;
+    var map = this.font[ch];
+    if (!map) continue;
+    for (var y = top; y < Math.min(bottom, top + this.ratio.height); y++) {
+      if (!lines[y]) continue;
+      var mline = map[y - top];
+      if (!mline) continue;
+      for (var mx = 0; mx < this.ratio.width; mx++) {
+        var mcell = mline[mx];
+        if (mcell == null) break;
+        if (this.fch && this.fch !== ' ') {
+          lines[y][x + mx][0] = dattr;
+          lines[y][x + mx][1] = mcell === 1 ? this.fch : this.ch;
+        } else {
+          lines[y][x + mx][0] = mcell === 1 ? attr : dattr;
+          lines[y][x + mx][1] = mcell === 1 ? ' ' : this.ch;
+        }
+      }
+      lines[y].dirty = true;
+    }
+  }
+
+  return coords;
+};
+
+/**
+ * Expose
+ */
+
+module.exports = BigText;