Javascript-форум - Показать сообщение отдельно

Feex · #3 (**permalink**) 29.08.2016, 13:55

Будет работать только если все файлы на одном хостинге лежат и запуск идет с родного домена..

<!DOCTYPE html>
<html lang="en" >
<head>
    <meta charset="utf-8" />
    <meta name="author" content="Script Tutorials" />
    <title>HTML5 canvas - Image color picker | Script Tutorials</title>
    <link href="https://www.script-tutorials.com/demos/158/css/main.css" rel="stylesheet" type="text/css" />
    <script type="text/javascript" src="https://www.script-tutorials.com/demos/158/js/jquery-1.5.2.min.js"></script>
    <script type="text/javascript">
var canvas;
var ctx;

var images = [ // predefined array of used images
    'https://www.script-tutorials.com/demos/158/images/pic1.jpg',
    'https://www.script-tutorials.com/demos/158/images/pic2.jpg',
    'https://www.script-tutorials.com/demos/158/images/pic3.jpg',
    'https://www.script-tutorials.com/demos/158/images/pic4.jpg',
    'https://www.script-tutorials.com/demos/158/images/pic5.jpg',
    'https://www.script-tutorials.com/demos/158/images/pic6.jpg',
    'https://www.script-tutorials.com/demos/158/images/pic7.jpg',
    'https://www.script-tutorials.com/demos/158/images/pic8.jpg',
    'https://www.script-tutorials.com/demos/158/images/pic9.jpg',
    'https://www.script-tutorials.com/demos/158/images/pic10.jpg'
];
var iActiveImage = 0;

$(function(){

    // drawing active image
    var image = new Image();
    image.onload = function () {
        ctx.drawImage(image, 0, 0, image.width, image.height); // draw the image on the canvas
    }
    image.src = images[iActiveImage];

    // creating canvas object
    canvas = document.getElementById('panel');
    ctx = canvas.getContext('2d');

    $('#panel').mousemove(function(e) { // mouse move handler
        var canvasOffset = $(canvas).offset();
        var canvasX = Math.floor(e.pageX - canvasOffset.left);
        var canvasY = Math.floor(e.pageY - canvasOffset.top);

        var imageData = ctx.getImageData(canvasX, canvasY, 1, 1);
        var pixel = imageData.data;

        var pixelColor = "rgba("+pixel[0]+", "+pixel[1]+", "+pixel[2]+", "+pixel[3]+")";
        $('#preview').css('backgroundColor', pixelColor);
    });

    $('#panel').click(function(e) { // mouse click handler
        var canvasOffset = $(canvas).offset();
        var canvasX = Math.floor(e.pageX - canvasOffset.left);
        var canvasY = Math.floor(e.pageY - canvasOffset.top);

        var imageData = ctx.getImageData(canvasX, canvasY, 1, 1);
        var pixel = imageData.data;

        $('#rVal').val(pixel[0]);
        $('#gVal').val(pixel[1]);
        $('#bVal').val(pixel[2]);

        $('#rgbVal').val(pixel[0]+','+pixel[1]+','+pixel[2]);
        $('#rgbaVal').val(pixel[0]+','+pixel[1]+','+pixel[2]+','+pixel[3]);
        var dColor = pixel[2] + 256 * pixel[1] + 65536 * pixel[0];
        $('#hexVal').val( '#' + dColor.toString(16) );
    }); 

    $('#swImage').click(function(e) { // switching images
        iActiveImage++;
        if (iActiveImage >= 10) iActiveImage = 0;
        image.src = images[iActiveImage];
    });
});
</script>
</head>
<body>
    <div class="container">
        <div class="column1">
            <canvas id="panel" width="500" height="333"></canvas>
        </div>
        <div class="column2">
            <div><input type="button" value=" Следующая картинка " id="swImage" /></div>
            <div>Preview:</div>
            <div id="preview"></div>
            <div>Color:</div>
            <div>R: <input type="text" id="rVal" /></div>
            <div>G: <input type="text" id="gVal" /></div>
            <div>B: <input type="text" id="bVal" /></div>
            <div>RGB: <input type="text" id="rgbVal" /></div>
            <div>RGBA: <input type="text" id="rgbaVal" /></div>
            <div>HEX: <input type="text" id="hexVal" /></div>
            <hr />
        </div>
        <div style="clear:both;"></div>
    </div>
    
    
</body>
</html>