2:42 p.m.
Author: yradtsevich
Date: 2012-04-11 15:42:02 -0400 (Wed, 11 Apr 2012)
New Revision: 40143
Added:
workspace/yradtsevich/browsersim/region-finder/
workspace/yradtsevich/browsersim/region-finder/region-finder.html
workspace/yradtsevich/browsersim/region-finder/region-finder.js
Log:
JBIDE-10945 BrowserSim: create more skins
- created HTML application to create visible regions for images (needed for BrowserSim
skins)
Added: workspace/yradtsevich/browsersim/region-finder/region-finder.html
===================================================================
--- workspace/yradtsevich/browsersim/region-finder/region-finder.html
(rev 0)
+++ workspace/yradtsevich/browsersim/region-finder/region-finder.html 2012-04-11 19:42:02
UTC (rev 40143)
@@ -0,0 +1,23 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
+ "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+<head>
+ <script type="text/javascript"
src="region-finder.js"></script>
+ <style>
+ canvas {
+ position: relative;
+ border: 1px solid #000;
+ }
+ #outputId {
+ background-color: yellow;
+ border: 1px solid #000;
+ }
+ </style>
+ <title></title>
+</head>
+<body onload="main()">
+ <canvas id="canvasId" width="700px"
height="600px"></canvas>
+ <div></div>Visible area region (pairs of (x, y)):</div>
+ <div id="outputId"></div>
+</body>
+</html>
\ No newline at end of file
Added: workspace/yradtsevich/browsersim/region-finder/region-finder.js
===================================================================
--- workspace/yradtsevich/browsersim/region-finder/region-finder.js
(rev 0)
+++ workspace/yradtsevich/browsersim/region-finder/region-finder.js 2012-04-11 19:42:02
UTC (rev 40143)
@@ -0,0 +1,104 @@
+/**
+ * Created by JetBrains WebStorm.
+ * User: yradtsevich
+ * Date: 11.4.12
+ * Time: 18.32
+ * To change this template use File | Settings | File Templates.
+ */
+// Get the CanvasPixelArray from the given coordinates and dimensions.
+function main() {
+ var img = new Image();
+// img.src = 'orig.png';
+ var canvas = document.getElementById("canvasId");
+ var context = canvas.getContext("2d");
+ context.fillText("Drop an image here", 240, 200);
+ context.fillText("The visible area of the image must touch the top image
border", 240, 240);
+ context.fillText("(i.e. the first row of the image must have at least 1 filled
pixel).", 240, 255);
+
+ canvas.addEventListener("drop", function (evt) {
+ var files = evt.dataTransfer.files;
+ if (files.length > 0) {
+ var file = files[0];
+ if (typeof FileReader !== "undefined" &&
file.type.indexOf("image") != -1) {
+ var reader = new FileReader();
+ // Note: addEventListener doesn't work in Google Chrome for this
event
+ reader.onload = function (evt) {
+ img.src = evt.target.result;
+ };
+ reader.readAsDataURL(file);
+ }
+ }
+ evt.preventDefault();
+ }, false);
+
+ img.onload = function() {
+ canvas.width = img.width;
+ canvas.height = img.height;
+ context.drawImage(img, 0, 0);
+ var imgd = context.getImageData(0, 0, img.width, img.height);
+ var pix = imgd.data;
+
+ var fullPath = findPath(img.width, img.height, function(point) {
+ if (point.x < 0 || point.x >= img.width
+ ||point.y < 0 || point.y >= img.height) {
+ return true;
+ }
+ var alphaP = pix[(point.y * img.width + point.x) * 4 + 3];
+ return alphaP == 0;
+ });
+
+ var packedPath = packPath(fullPath);
+ var output = document.getElementById("outputId");
+ output.innerHTML = "<B>int[] path = {</B>";
+ for (var i = 0; i < packedPath.length - 1; i++) {
+ output.innerHTML += packedPath[i].x + ', ' + packedPath[i].y + ',
';
+ }
+ var lastIndex = packedPath.length - 1;
+ output.innerHTML += packedPath[lastIndex].x + ', ' +
packedPath[lastIndex].y + "<B>};</B>";
+ }
+
+ var findPath = function(width, height, isEmpty) {
+ var directions = [{x : 1, y : 0}, {x : 1, y : 1}, {x : 0, y : 1}, {x : -1, y :
1}, {x : -1, y : 0}, {x : -1, y : -1}, {x : 0, y : -1}, {x : 1, y : -1}];
+ for (var i = 0; i < directions.length; i++) {
+ directions[i].next = directions[(i + 1) % directions.length];
+ directions[i].opposite = directions[(i + directions.length / 2) %
directions.length];
+ }
+
+ var initialDirection = directions[0];
+ var startPoint = {x:0, y:0};
+ var point = startPoint;
+ while (isEmpty(point)) {
+ point.x += initialDirection.x;
+ point.y += initialDirection.y;
+ }
+
+ var path = [point];
+ var direction = initialDirection;
+
+ do {
+ direction = direction.opposite;
+ do {
+ var newPoint = {};
+ direction = direction.next;
+ newPoint.x = point.x + direction.x;
+ newPoint.y = point.y + direction.y;
+ } while (isEmpty(newPoint));
+ point = newPoint;
+ path.push(point);
+ } while (startPoint.x != point.x || startPoint.y != point.y);
+
+ return path;
+ }
+
+ var packPath = function(path) {
+ var packed = [path[0]];
+ for (var i = 1; i < path.length - 1; i++) {
+ if (((path[i].x - path[i - 1].x) != (path[i + 1].x - path[i].x))
+ ||((path[i].y - path[i - 1].y) != (path[i + 1].y - path[i].y))) {
+ packed.push(path[i]);
+ }
+ }
+
+ return packed;
+ }
+}
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