I have a custom view that fills my entire screen. (A piano keyboard) When a user touches the key, it causes invalidate() to be called and the whole keyboard gets redrawn to show the new state with a touched key. Currently the view is very simple, but I plan to add a bit more nice graphics. Since the whole keyboard is dynamically rendere...
I want to write a navigator application, which draws maps from images. Maps need to be drawn dynamically, based on user's navigation. My idea is loading 9 images into memory, and then create a view to show needed map: When user navigates, the view is moved. When needed, images which no longer seen will be destroyed, and new ones will ...
Hello, I have a VisualBrush and need this VisualBrush as a Drawing. Anyone knows how this can be done? Thanks for any hint! ...
I'm trying to draw mirrored (as in, it looks like you held it up to a mirror) text, and I want to do it the easiest way possible. It is possible to do a transform on a UILabel? Or do I have to use Quartz and do CGContextShowTextAtPoint() ? ...
I have an interface created with Glade. It contains a DrawingArea and buttons. I tried to create a Thread to refresh every X time my Canva. After a few seconds, I get error messages like: "X Window Server 0.0", "Fatal Error IO 11" Here is my code : import pygtk pygtk.require("2.0") import gtk import Canvas import threading as T impor...
My android app draws a chart on a Canvas. It works fine in the simulator. On a real device the chart is clipped to the left 1/5 of the screen. I've tried: canvas.clipRect(0, 0, canvas.getWidth(), canvas.getHeight(), Region.Op.REPLACE); to clear the clipping. Am I missing something? Does layering have anything to do with this? Tha...
i have my test.php: <?php echo "Image:<br/>"; include('draw.php'); ?> and my draw.php: <?php $img = imagecreate(250,80); ... header("Content-type: image/jpeg"); imagejpeg($img); imagedestroy($img); ?> now, visiting test.php tells me that headers is already sent. How do i show the image in draw.php "realtime" (not by saving t...
Hi, In <insert non-IE browser here> there is the <canvas> element that allows for doing some fairly advanced drawing. In IE it's possible to draw with <div> elements, but that can get pretty slow if you're doing anything more than a few basic tasks. Is there anything available in IE 5+, in pure HTML/CSS/Javascript, that can allows for ...
I was looking for it here in Stack Overflow as in Google, and I found a lot of packages to draw, but it seems a complex task, so I would like to know which is the most appropriate package to draw bars, and associate data to it. Also I was looking for a code example, but I did not have luck. ...
I want to draw graphs (nodes and edges) in Java. However, since I don't know how to go about it, I would like to have some advice before starting. How should I do this? use Graphics2D package, right? How about the labels for the nodes? should I use something like drawString and handle all the "centering" manually or create a JLabel fo...
Given a series of points, how could I calculate the vector for that line 5 pixels away? Ex: Given: \ \ \ How could I find the vector for \ \ \ \ \ \ The ones on the right. I'm trying to figure out how programs like Flash can make thick outlines. Thanks ...
I'm trying to implement line thickness as denoted here: start = line start = vector(x1, y1) end = line end = vector(x2, y2) dir = line direction = end - start = vector(x2-x1, y2-y1) ndir = normalized direction = dir*1.0/length(dir) perp = perpendicular to direction = vector(dir.x, -dir.y) nperp = normalized perpendicular = perp*1.0/leng...
XNA doesn't have any methods which support circle drawing. Normally when I had to draw circle, always with the same color, I just made image with that circle and then I could display it as a sprite. But now the color of the circle is specified during runtime, any ideas how to deal with that? ...
I want to learn how to draw shapes with wxWidgets. Where do I start? In case there are multiple ways, I prefer ease of use over cross-platform compatibility. I'm a Windows user. ...
Hi all, I have an application in which I'm doing some custom drawing, a bunch of lines on a gradient background, like so (ignore the text, they're just UILabels): http://prehensile.co.uk/outgoing/Screenshot2010-06-09at12.22.32.png At the moment, that's all done by starting a new CGContext, drawing stuff into it with CGContextDrawLinea...
Does anyone have an algorithm for drawing an arrow in the middle of a given line. I have searched for google but haven't found any good implementation. P.S. I really don't mind the language, but it would be great if it was Java, since it is the language I am using for this. Thanks in advance. ...
I have a class Grid which produces a graph paper like grid on in the drawing area. I then have 5 other classes for different shapes to draw with; Line, Polygon, Ellipse, Curve, Arc Now, these 5 classes use an instance of Grid because Grid has a resolution and a scale. Inside Grid I have: public function set resolution(x:Number):void { ...
Hi all, The issue is drawing an indexed image on an iPhone (1 byte pr pixel, 256 colors). You can easily convert a raw image to a CGImage if it is 24 or 32 bts per pixel RGB using 'CGBitmapContextCreate' and 'CGBitmapContextCreateImage' but it does not work with indexed images, I have searched in iPhone SDK documentation and the WEB but...
I'm starting to design a custom control with rather complex drawing. It will be a kind of chart (a kind of radar chart). It will be composed of a few axises with labels, line-regions (like spider-network) and filled shapes. The main question is what's the difference between using Path control and Polygon control? What's better to use he...
Hi, I am working on a read-along-book app for the iPad which is very similar to this Toy Story book ([url=http://itunes.apple.com/us/app/toy-story-read-along/id364376920?mt=8]Toy Story Read-Along for iPhone, iPod touch, and iPad on the iTunes App Store[/url]). So my question is how would be the best way to draw the text to the screen an...