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Support for "dark on light" terminal emulators #6

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Support for "dark on light" terminal emulators #6

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44 changes: 31 additions & 13 deletions cmd/vtmc.js
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Original file line number Diff line number Diff line change
Expand Up @@ -16,18 +16,18 @@ var CURFILE;
var SLIDE;

var TERM;
var LIGHT = false;

var INTENSITY = 232;
var IMAX = 255;
var IMIN = 232;

var BLUE_RAMP = [ 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 27, 32, 33,
var BLUE_RAMP = [ 17, 17, 17, 18, 18, 19, 19, 20, 20, 21, 27, 32, 33,
38, 39, 44, 45, 45, 81, 81, 51, 51, 123, 123 ];

var WORKING = false;
var ANIM;


function
load_deck()
{
Expand Down Expand Up @@ -208,15 +208,25 @@ fade(slide, out, callback)
1 + offset, voffset + i);
}

if ((out && INTENSITY <= IMIN) ||
(!out && INTENSITY >= IMAX)) {
clearInterval(ANIM);
ANIM = null;
callback();
return;
if (LIGHT) {
if ((!out && INTENSITY <= IMIN) ||
(out && INTENSITY >= IMAX)) {
clearInterval(ANIM);
ANIM = null;
callback();
return;
}
INTENSITY += out ? 1 : -1;
} else {
if ((out && INTENSITY <= IMIN) ||
(!out && INTENSITY >= IMAX)) {
clearInterval(ANIM);
ANIM = null;
callback();
return;
}
INTENSITY += out ? -1 : 1;
}

INTENSITY += out ? -1 : 1;
}, delay);
}

Expand Down Expand Up @@ -479,16 +489,19 @@ main(argv)
{
var command = argv[0];

if (command !== 'show' && command !== 'size') {
if (command !== 'show' && command !== 'shine' && command !== 'size') {
console.error('Usage: vtmc COMMAND [DIRECTORY]');
console.error('');
console.error('Commands:');
console.error('');
console.error(' show present slideshow');
console.error(' shine present slideshow on white background');
console.error(' size measure required terminal ' +
'size for deck');
console.error('');
console.error('If no directory specified, the current ' +
console.error('Directory:');
console.error('');
console.error(' If not specified, the current ' +
'working directory will be used.');
console.error('');
console.error('Control Keys:');
Expand All @@ -502,7 +515,7 @@ main(argv)
}

DECKDIR = argv[1] ? argv[1] : process.cwd();

try {
DECK = load_deck();
} catch (ex) {
Expand All @@ -514,6 +527,11 @@ main(argv)
if (argv[0] === 'show') {
setup_terminal();
check_size(TERM.size());
} else if (argv[0] === 'shine') {
LIGHT = true;
INTENSITY = 255;
setup_terminal();
check_size(TERM.size());
} else {
console.log('slide size report:');
console.log('');
Expand Down