Canvas box-shadow pixel art generator

Developer
Ludvig Lindblom
Size
3,678 Kb
Views
44,528
  1. Canvas box-shadow pixel art generator Previews
  2. Canvas box-shadow pixel art generator HTML Codes
  3. Canvas box-shadow pixel art generator CSS Codes
  4. Canvas box-shadow pixel art generator JS Codes

How do I make an canvas box-shadow pixel art generator?

What is a canvas box-shadow pixel art generator? How do you make a canvas box-shadow pixel art generator? This script and codes were developed by Ludvig Lindblom on 25 July 2022, Monday.

Canvas box-shadow pixel art generator Previews
IQ Test

Canvas box-shadow pixel art generator - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Canvas box-shadow pixel art generator</title> <script src="http://s.codepen.io/assets/libs/modernizr.js" type="text/javascript"></script> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css"> <style> /* NOTE: The styles were added inline because Prefixfree needs access to your styles and they must be inlined if they are on local disk! */ body { background: #eaeaea;
}
#drawing-board { width: 960px; margin: 25px auto; border: 1px solid #ddd; background: #fff; padding: 10px; overflow: auto;
}
#draw-bg { width: 320px; height: 320px; float: left;
}
#draw { display: block; width: 320px; height: 320px;
}
#drawing { background: #fff; width: 308px; height: 318px; border: 1px solid #ddd; margin: 0 10px; padding: 0; float: left; resize: none; font: normal 1em/1 monospace;
}
#output { background: #fff; width: 308px; height: 318px; border: 1px solid #ddd; margin: 0; padding: 0; float: left; resize: none; font: normal 1em/1 monospace;
}
#clear-all { margin: 10px 0 0 0; float: left;
}
#generate-code { margin: 10px 0 0 0; float: right;
} </style> <script src="https://cdnjs.cloudflare.com/ajax/libs/prefixfree/1.0.7/prefixfree.min.js"></script>
</head>
<body> <div id="drawing-board"> <div id="draw-bg"><canvas id="draw" width="320" height="320">Browser does not support canvas</canvas></div> <div id="drawing"><div class="pixels"></div></div> <textarea id="output"></textarea> <button id="clear-all">Clear all</button> <button id="generate-code">Generate code</button>
</div> <script src='http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script> <script src="js/index.js"></script>
</body>
</html>

Canvas box-shadow pixel art generator - Script Codes CSS Codes

body { background: #eaeaea;
}
#drawing-board { width: 960px; margin: 25px auto; border: 1px solid #ddd; background: #fff; padding: 10px; overflow: auto;
}
#draw-bg { width: 320px; height: 320px; float: left;
}
#draw { display: block; width: 320px; height: 320px;
}
#drawing { background: #fff; width: 308px; height: 318px; border: 1px solid #ddd; margin: 0 10px; padding: 0; float: left; resize: none; font: normal 1em/1 monospace;
}
#output { background: #fff; width: 308px; height: 318px; border: 1px solid #ddd; margin: 0; padding: 0; float: left; resize: none; font: normal 1em/1 monospace;
}
#clear-all { margin: 10px 0 0 0; float: left;
}
#generate-code { margin: 10px 0 0 0; float: right;
}

Canvas box-shadow pixel art generator - Script Codes JS Codes

$(document).ready(function () { var canvas = document.getElementById('draw'), context = canvas.getContext('2d'), color = '#000000', pixel_size = 10, canvas_width = canvas.width, canvas_height = canvas.height; $('#draw').mousedown(function (e) { e.preventDefault(); position = getPosition(e); var cx = (Math.floor(position.x / pixel_size) * pixel_size), cy = (Math.floor(position.y / pixel_size) * pixel_size); if (position.x + pixel_size > canvas_width) { cx = canvas_width - pixel_size; } if (position.y + pixel_size > canvas_height) { cy = canvas_height - pixel_size; } if (e.ctrlKey || e.metaKey) { drawPixel(cx, cy, null, true); } else { drawPixel(cx, cy, color); } }); $('#clear-all').on('click', function (e) { e.preventDefault(); context.clearRect(0, 0, canvas_width, canvas_height); }); $('#generate-code').on('click', function (e) { e.preventDefault(); var shadow = [], min_width = canvas_width, min_height = canvas_height, max_width = 0, max_height = 0; for (var i = 0; i < canvas_height; i += pixel_size) { for (var j = 0; j < canvas_width; j += pixel_size) { var data = context.getImageData(j, i, pixel_size, pixel_size).data; if (data[0] != 255 && data[1] != 255 && data[2] != 255 && data[3] != 0) { if ((j + pixel_size) < min_width) { min_width = (j + pixel_size); } if ((i + pixel_size) < min_height) { min_height = (i + pixel_size); } if ((j + (pixel_size * 2)) > max_width) { max_width = (j + (pixel_size * 2)); } if ((i + (pixel_size * 2)) > max_height) { max_height = (i + (pixel_size * 2)); } shadow.push((j + pixel_size) + 'px ' + (i + pixel_size) + 'px #' + (data[2] | (data[1] << 8) | (data[0] << 16) | (1 << 24)).toString(16).slice(1)); } } } shadow = shadow.join(',\n\t\t'); $('#drawing .pixels').css({ 'display': 'block', 'width': pixel_size, 'height': pixel_size, 'margin': '-' + min_height + 'px ' + max_width + 'px ' + max_height + 'px -' + min_width + 'px', 'box-shadow': shadow }); $('#output').val('.pixels {\n\tdisplay: block;\n\twidth: ' + pixel_size + 'px;\n\theight: ' + pixel_size + 'px;\n\tmargin: -' + min_height + 'px ' + max_width + 'px ' + max_height + 'px -' + min_width + 'px;\n\tbox-shadow: \n\t\t' + shadow + ';\n\}'); }); function drawPixel(x, y, color, clear) { if (clear == null) clear = false; context.fillStyle = color; if (clear) { context.clearRect(x, y, pixel_size, pixel_size); } else { context.fillRect(x, y, pixel_size, pixel_size); } } function getPosition(e) { var targ; if (!e) { e = window.event; } if (e.target) { targ = e.target; } else if (e.srcElement) { targ = e.srcElement; } if (targ.nodeType == 3) { targ = targ.parentNode; } var x = Math.floor(e.pageX - $(targ).offset().left); var y = Math.floor(e.pageY - $(targ).offset().top); return { "x": x, "y": y }; }; /* Build a 10x10 grid with markers every 50th pixel and set it as a background behind the canvas */ function buildGrids(gridPixelSize, gridColor, gridGap) { var canvas = document.createElement("canvas"); canvas.width = $('#draw').width(); canvas.height = $('#draw').height(); var ctx = canvas.getContext('2d'); ctx.lineWidth = 0.5; ctx.strokeStyle = gridColor; for (var i = 0; i <= canvas.height; i = i + gridPixelSize) { ctx.beginPath(); ctx.moveTo(0, i); ctx.lineTo(canvas.width, i); if (i % parseInt(gridGap) == 0) { ctx.lineWidth = 2; } else { ctx.lineWidth = 0.5; } ctx.closePath(); ctx.stroke(); } for (var j = 0; j <= canvas.width; j = j + gridPixelSize) { ctx.beginPath(); ctx.moveTo(j, 0); ctx.lineTo(j, canvas.height); if (j % parseInt(gridGap) == 0) { ctx.lineWidth = 2; } else { ctx.lineWidth = 0.5; } ctx.closePath(); ctx.stroke(); } var uri = canvas.toDataURL('image/png'); $('#draw-bg').css('background-image', 'url(' + uri + ')'); } buildGrids(pixel_size, "#ddd", (pixel_size * 5));
});
Canvas box-shadow pixel art generator - Script Codes
Canvas box-shadow pixel art generator - Script Codes
Home Page Home
Developer Ludvig Lindblom
Username ludviglindblom
Uploaded July 25, 2022
Rating 3.5
Size 3,678 Kb
Views 44,528
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