156 lines
3.5 KiB
JavaScript
156 lines
3.5 KiB
JavaScript
/**
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* progressbar.js - progress bar element for blessed
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* Copyright (c) 2013-2015, Christopher Jeffrey and contributors (MIT License).
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* https://github.com/chjj/blessed
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*/
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/**
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* Modules
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*/
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var helpers = require('../helpers');
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var Node = require('./node');
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var Input = require('./input');
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/**
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* ProgressBar
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*/
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function ProgressBar(options) {
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var self = this;
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if (!(this instanceof Node)) {
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return new ProgressBar(options);
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}
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options = options || {};
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Input.call(this, options);
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this.filled = options.filled || 0;
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if (typeof this.filled === 'string') {
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this.filled = +this.filled.slice(0, -1);
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}
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this.value = this.filled;
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this.pch = options.pch || ' ';
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// XXX Workaround that predates the usage of `el.ch`.
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if (options.ch) {
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this.pch = options.ch;
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this.ch = ' ';
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}
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if (options.bch) {
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this.ch = options.bch;
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}
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if (!this.style.bar) {
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this.style.bar = {};
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this.style.bar.fg = options.barFg;
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this.style.bar.bg = options.barBg;
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}
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this.orientation = options.orientation || 'horizontal';
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if (options.keys) {
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this.on('keypress', function(ch, key) {
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var back, forward;
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if (self.orientation === 'horizontal') {
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back = ['left', 'h'];
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forward = ['right', 'l'];
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} else if (self.orientation === 'vertical') {
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back = ['down', 'j'];
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forward = ['up', 'k'];
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}
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if (key.name === back[0] || (options.vi && key.name === back[1])) {
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self.progress(-5);
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self.screen.render();
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return;
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}
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if (key.name === forward[0] || (options.vi && key.name === forward[1])) {
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self.progress(5);
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self.screen.render();
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return;
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}
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});
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}
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if (options.mouse) {
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this.on('click', function(data) {
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var x, y, m, p;
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if (!self.lpos) return;
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if (self.orientation === 'horizontal') {
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x = data.x - self.lpos.xi;
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m = (self.lpos.xl - self.lpos.xi) - self.iwidth;
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p = x / m * 100 | 0;
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} else if (self.orientation === 'vertical') {
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y = data.y - self.lpos.yi;
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m = (self.lpos.yl - self.lpos.yi) - self.iheight;
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p = y / m * 100 | 0;
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}
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self.setProgress(p);
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});
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}
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}
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ProgressBar.prototype.__proto__ = Input.prototype;
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ProgressBar.prototype.type = 'progress-bar';
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ProgressBar.prototype.render = function() {
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var ret = this._render();
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if (!ret) return;
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var xi = ret.xi
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, xl = ret.xl
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, yi = ret.yi
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, yl = ret.yl
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, dattr;
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if (this.border) xi++, yi++, xl--, yl--;
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if (this.orientation === 'horizontal') {
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xl = xi + ((xl - xi) * (this.filled / 100)) | 0;
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} else if (this.orientation === 'vertical') {
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yi = yi + ((yl - yi) - (((yl - yi) * (this.filled / 100)) | 0));
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}
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dattr = this.sattr(this.style.bar);
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this.screen.fillRegion(dattr, this.pch, xi, xl, yi, yl);
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if (this.content) {
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var line = this.screen.lines[yi];
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for (var i = 0; i < this.content.length; i++) {
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line[xi + i][1] = this.content[i];
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}
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line.dirty = true;
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}
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return ret;
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};
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ProgressBar.prototype.progress = function(filled) {
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this.filled += filled;
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if (this.filled < 0) this.filled = 0;
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else if (this.filled > 100) this.filled = 100;
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if (this.filled === 100) {
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this.emit('complete');
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}
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this.value = this.filled;
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};
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ProgressBar.prototype.setProgress = function(filled) {
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this.filled = 0;
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this.progress(filled);
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};
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ProgressBar.prototype.reset = function() {
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this.emit('reset');
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this.filled = 0;
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this.value = this.filled;
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};
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module.exports = ProgressBar;
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