I have the following html file
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Now this code works on ios safari 4.2 and later but i can't get it to work on ios safari 4.1. On 4.1 it displays the canvas but will not draw the image. The debug console shows no errors. Is there anyway to get it to work, or is 4.2 the cut off point for even the most basic canvas operations?
I want to save my canvas-content to a single image-file. There are an approach using todataurl(), which works fine. But not if i draw an image-file (e.g. car.jpg or house.png) to the canvas additionally. It does not return the whole image? Here I have my simple example-code:
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I would try to make a game/demo with legitimate script that is easy to read and properly segmented with functions instead of my previous attempts that are all one file.I'm trying to print the character (currently a circle) to screen in an external function (print_character in character.js).
View 2 Replies View RelatedI am trying to create an Asteroids type game using JavaScript along with html5's canvas element for drawing. I have searched around and have looked at examples but I can't figure out what is wrong with my rendering that I do in the game loop that is run every frame. The problem appears to be only that the canvas is not cleared at the beginning of each frame but I feel there might be something wrong also. The code used and shown below only works in Firefox but not Google Chrome or Safari.
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I'm trying to figure out how to add images to a canvas element. I found a good site, but for some reason my images turn out bigger than expected.
Here's what I use (It's from different functions in different places, but essentially that is the relevant code). Assume there is a gameObject which has all the functions that I use. I tried replacing the functions with constant values but that made no difference:
PHP Code:
Somehow the image shows up much bigger than 69 pixels width and height. When I make the canvas smaller the image scales down with the canvas. So when I make the canvas twice as small, the image becomes twice as small as well. Seems like it is not using pixels as units.
Picture:
Doing in html5 canvas, so JavaScript (was not sure where to post, but here I go...). Above is a link to picture that I need to do. It is clock-like. I will have to draw a circle, and two lines, from centre to according points on circle. That is not a problem, the thing I can not do is to fill upper and lower parts of circle that those two lines divide, so upper part of a circle should be e.g. red, and lower blue. (Plus, it would have to bi gradient, to look more appealing).
I am trying to get a function to draw 5 randomly sized and colored rectangles nested within each other. Meaning each rectangle should not go outside the boundaries of the rectangle it is in. The color thing I've got down in a randomColor() function. It's the nesting rectangles inside rectangles that is confusing me (hense me being up for the past 4 hours trying to understand it) I started out with very simple code just making 5 rectangles of reducing sizes nested in each other, then added the Math.random to randomize all the sizes. Now I'm at this point and have lost my way. I added a bunch of comments in my code so maybe you'll understand what I'm trying to do.
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Is it possible to trigger mouse events with shapes drawn in an HTML5 canvas? I want to create a page with drawn elements that you can mouseover and pop up a dialogue box. I also want the shapes to react with some type of feedback. I'm hoping I can do this with javascript instead of Flash but haven't found a way to do it that's simple enough to make it worth it.
View 1 Replies View RelatedAny one knows the java script or java applet code to drag and image items to any where in the web page to combine a simple graph?
View 1 Replies View RelatedHow can I draw lines over an image using javascript, I already did that using Wz_jsgraphics library but what do I need next is to be able to delete that line or change its position, I need to treat each line as an object in its common sense.
View 1 Replies View RelatedI'm building an application. The goal of this subroutine is that the user can upload an image to the browser, and then enter coordinates (X,Y) to place icons and dots at the specified place. way to draw these dots and icons on an uploaded image?
View 5 Replies View RelatedOver the various browsers, is it better to use:
document.getElementById('num1').removeChild(image_ display);
or
image_display.parentNode.removeChild(image_display );
to remove an image.
[URL] check the above website. on mouse over of any image a pop up appears and displays the image information i want to achieve the same thing in my project which language is used for this purpose and how to do that.
View 4 Replies View RelatedI want to be able to place an image on the canvas and have an onclick event for that object.
Code:
<!DOCTYPE html>
<html>
<head>
[code]....
How do I convert an image or datauri to canvas? I see the other way at [URL], but I also want to find out how I can create a canvas at the first place.The reason I ask this question is because I would like to create a little app that lets user create a canvas 'image', save it as something and be able to reopen it for canvas modification in the future. I figured that datauri is a good way to save a canvas, but I am not sure how I can do to reopen the datauri and use canvas to modify the drawing.
View 1 Replies View Related Here is a link of what I currently have for an image-fade slideshow so far. However if I can I'd like html5+css3 to handle the fade effects instead of depending as heavily on jquery and js. Using the browsers own fade rendering will lighten that load.Link to what I have currently:
http://sympa.me/CHRISTOPHER/index.html .Link to some somewhat working examples.
http:[url]....
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().
View 1 Replies View RelatedI am creating a page with a dropdown menu that has 140 countries in the list. When someone clicks on say, Algeria, an image of Algeria comes up below the dropdown with a URL below that. I got the code to accomplish that much. What I need further help on is how to make the URLs a hyperlink (all different) as well as making the image clickable so that a larger version pops up when clicked on. I'm ok with starting from scratch if there is a better way to accomplish this than what I've got. code...
View 3 Replies View RelatedFancybox (Lightbox) - Last image not working. This is a follow on from another problem I had with the same image gallery I have this simple gallery that loads images from an xml file and uses Fancybox [URL]..Everything is working but the last image is not working with fancybox. The last image just displays in it's own window. Can anyone see why the last image is not displaying with fancybox.
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I'm trying to use an ajax function to load filenames into a text area. This works and is not the problem.Then I read the contents of the text file and create an array of file images. The images can be .jpg, .gif, etc. Again no problem.However, when I try to create new <img ...> elements with a 'createElement' function, I get major errors. I think the problem is in the 'AddImage()' function in the code below.
Code:
<html>
<head>
<title>Image Display</title>
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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.
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EBay has implemented a different way to upload auction pictures ---
after browsing for the picture and selecting it, the image preview
instantly displays on the screen, which is nice. Apparently this
process is being handled locally --- could someone try to re-create
this ? ... I imagine its using DHTML or some other technique, I'm not
sure how I would code this.
when the user clicks on a thumbnail the image displays. I actually managed to make this work with just two images, but wasn't sure how to make the script work with, say 6 images. Anyway this is what I have so far:
HTML Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Gallery</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link href="style.css" rel="stylesheet" type="text/css" />
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I opted to use JavaScript & PHP (instead of Flash) to create a sort-of "t-shirt designer" -- basically, it's a gallery-type script that allows users to scroll through t-shirt styles, swap colors, and so on, prior to reaching the actual design tool. And I'm starting to regret.
It's actually working very well so far, except for one thing: I want the t-shirt option that the user selects to link the user to the design tool. The "gallery" already has an image for each possible option that displays whenever the user selects a combination, but I want to make that image is a clickable link.
I have no idea where to start -- I know next to nothing about javascript -- and to accomplish this in Flasjh I'd have to start this stupid basic thing all over again from scratch, and it would defeat the point of not using Flash in the first place, so
I have a digital clock for my HTML website, which is created using images and javascript functions. This is the clock I used: [url]
I want to ammend it so that it displays a different color image between 8am and 5pm automatically.
Something like:
New to javascript/jquery, been trying to create a rotator which displays a large image with caption and uses next/previous button and thumbnails for control. Everything works fine but when the rotator gets to the last item i'd like it to go back to the first, and when the previous button is clicked at the first item I'd like it to go to the last.
$(document).ready(function() {
//set to zero
var x = 0;
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