CANVAS - Change Canvas Stroke On A Typeface Hover - Stroke() Doesn’t Work?

Mar 16, 2009

I have a menu in which is applied typeface script. Typeface 0.11 version doesn't support hover on links. There is an experimental version but doesn't work very well for me, so i tried to implement hover by myself.
Problem is: hover works pretty well changing canvas context property fillColor and then calling fill(), but the stroke on hovered voice remains on another color. Difficult to explain, so i put some test code online: TEST CODE As you can see, passing with mouse on the menu voices triggers the hover and the element change, but remains bordered in red.

[Code]...

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Jul 12, 2011

I want to delete some lines on the canvas that i have created in HTML5 (with the <canvas> tag). I know one solution and that is using clearRect() (give this function the HEIGHT and WIDTH of the canvas and you clears the whole canvas.).But i don't want to clear the whole canvas, i only want to delete a few lines made by the function lineTo().

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You guys know a plugin or script that can detect certain mouse strokes and automatically fires an function/actions ???

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Why doesn�t the following code work in IE, I use excanvas.js as told in other articles? excanvas is in the same dir as the html-file.

Code:

<html>
<head>
<title></title>[code].....

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I'm new to javascript and html5.

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[Code]...

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Feb 24, 2010

Why doesnt the following code work in IE. There is an error on the same row as fillText. It says object doesnt support this property or method.

<html>
<head>
<title></title>
<script type="text/javascript" src="excanvas.js"></script>
</head>
<body>
<canvas id='chart' width='500' height='200'>
[Code]...

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I may try to just create a hidden input box that will allow me to catch
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I am trying to write a very simple asteroids game for a presentation on
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<!DOCTYPE html><html><head><meta charset=utf-8"><title>Canvas</title></head><body>
<canvas id="myCanvas"></canvas>
<script type="text/javascript">
var canvas=document.getElementById('myCanvas');

[Code]....

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[Code]...

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Apr 7, 2009

Before the canvas tag you had to write a script to make a gradient for html element backgrounds. Now you can use canvas and it's as easy as ... well messing with canvas. I have this script. At one point I had the gradient img objects resizing so the gradient would not get skewed. it was simple. just set the height% at the opposite ratio of the canvas width/height. But I went to make some changes and the next thing i knew that no longer worked. I don't remember how I did it!! I'm going to have to start over if I can't figure it out. Here's the script. Canvas only.

I haven't adapted with excanvas for IE yet, but that's coming when I can figure out how I had the thing working right. It's a css issue. I had thought I put the img objects in divs that were sized and positioned and then set the images to width 100% height= 100%*((canvas.width-canvas.height)/canvas.width) So in my example, the canvas was 100 x 30 and the factor is 7 so it would resize the image 700% and the height would grow by the relative amount to the setting I had it. I'll try to figure it out, but there's the script working somewhat. I want to figure out a way to resize the img objects when the user resizes the page, but I want the img to always maintain aspect ratio. [URL]

<script>
/*ORIGINAL SCRIPT FOUND AT [URL]*/
window.onload = function () {
var canvas = document.getElementById('c');
var ctx = canvas.getContext('2d');
var g = ctx.createLinearGradient(0, 0, 100, 50);
g.addColorStop(0, 'rgba(255, 255, 0, 0.5)');
g.addColorStop(0.5, '#0ff');
g.addColorStop(1, '#00f');
ctx.fillStyle = g;
ctx.fillRect(0, 0, 100, 50);
var data = canvas.toDataURL();
document.getElementById('i').src = data;
document.getElementById('EIMG').src = data;

var canvas2 = document.getElementById('c2');
var ctx2 = canvas2.getContext('2d');
var g2 = ctx2.createLinearGradient(0, 0, 100, 50);
g2.addColorStop(0, 'rgba(255, 0, 255, 0.5)');
g2.addColorStop(0.5, '#0ff');
g2.addColorStop(1, '#00f');
ctx2.fillStyle = g2;
ctx2.fillRect(0, 0, 100, 50);
var data2 = canvas2.toDataURL();
document.getElementById('i2').src = data2;
document.getElementById('DIMG').src = data2; .....

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My problem that i'm having is that i can't seem to get the code to work which will write to more than one canvas.

[Code]...

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Why doesn't the following code work:
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canvas.height = 700;
var context = canvas.getContext('2d');
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context.stroke();
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[Code]...

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May 6, 2010

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Here is the code I have so far:
var shoreline = new Array();
var waves = new Array();
var canWidth = 600;
var canHeight = 400;
var waveNum = 0;
var count = 0; .....

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Here's a snippet:
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If I change the last two lines to:
var drawing = canvases[i].getContext("2D");
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[Code]...

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Code:

<!DOCTYPE html>
<html>
<head>

[code]....

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