Tagged Questions

Canvas is an drawing element introduced to web development with HTML5. For Android or WPF, use android-canvas or WPF-controls.

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three.js — loading blender json format model in browser

I'm having a difficult time trying to view my exported model in the browser using three.js — eventually I'd like to be able to navigate through the model using PointerLockControls.js but I can't even ...
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2answers
22 views

JavaScript: Memory leak on canvas (not in Chrome)

I'm trying to draw some gradient lines on canvas, using jCanvas plugin and jQuery but my code leads to memory leak in Firefox (reserved RAM increases to the infinity). Internet Explorer deals with RAM ...
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Weird Assignment IDE Warning

Im currently developing a html5 canvas application. also required to work on mobile devices. one of the features is bmi calculation like: Javascript code: bmi = refweight / ((refheight/ ...
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1answer
27 views

async sort for kineticjs line points?

The problem I've been fighting for the last 2 days is a bit strange, so I was not really sure how specify it in the title. I have a KineticJs Line, which has an array of points (line.attrs.points) in ...
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0answers
11 views

Hold the canvas drawing while using intent to another class

I am creating a simple drawing application in android. I have Activity A(settings for drawing. like brush color)..... Activity B(Canvas).... A "settings" button to go to settings class from canvas.... ...
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1answer
21 views

Android Canvas.drawCircle() bug. Persistently draws an ellipse instead of a circle

I try to create a circle with help of Canvas, using the method drawCircle(...). But in the end why get I an ellipse instead of a circle ? How can I get "true" circle ? Bitmap bitmap = ...
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0answers
14 views

Does canvas corrupt base64 data?

I'm building a icon-manager as a webservice where the icons are stored as base64 blobs (svgs and pngs) in a database. I would like to render the icons on a clients html5 canvas where the client can ...
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votes
1answer
20 views

KineticJS - Draw one layer to an offscreen canvas

KineticJS takes hold of the canvases and controls their size and position. I would like to have KineticJS render a layer to an offscreen 5000x2500 canvas, it seems a little complicated and "hacky" to ...
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1answer
24 views

Html DrawCanvas is null

I'm trying to duplicate my canvas but it throw me drawCanvas is null error. Whenever i hit the button it throw me the error. Is there any other way i can duplicate my canvas? HTML <Html> ...
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1answer
10 views

Chrome canvas rendering issue

I've created a small javascript game and I tested on my local computer in all major browsers and it works fine . After that I uploaded the game on my hosting server and the game wont display in Chrome ...
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0answers
18 views

Kineticjs array objects

I have a problem with kinetics object: I have some kinetics objects... var trianguloG1=new Kinetic.Polygon({ points: [x, y, catetosTiangulosGrandes+x, y, x, catetosTiangulosGrandes+y, x, y], fill: ...
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5answers
32 views

How to draw existing <img> to canvas

I know I can do this using javascript: var ctx = getCanvas('testCanvas').getContext('2d'); // get Canvas context var img = new Image(); img.src = 'test.png'; img.onload = function(){ ...
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1answer
28 views

Save canvas in client side

JavaScript if (!window.Clipboard) { var pasteCatcher = document.createElement("apDiv1"); pasteCatcher.setAttribute("contenteditable", ""); pasteCatcher.style.opacity = 0; ...
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1answer
20 views

Horizontal Scrollbar not working in Python TKinter Frame

I have a canvas (for ttk.Frame not having xview,yview methods) holding frames inside of it, which I want to browse horizontally, as they are in the same row. Found some tutorials, and while they were ...
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1answer
17 views

Does requestFullScreen() only work for width and relative position?

I'm programming something with canvas and want to add fullscreen support. I found the API and its working but with some problems: First of all I recognized that fullscreen mode uses the full width of ...

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