rendering

问题 The code in the view shall give the books in the database <% @bookmark.each do |book| %> works only for multiple rows. If i had single row, it would show error like " undefined method `each' for #<Bookmark:0x3e2e3f0> " What should i do to print single row also. ? 回答1: <% @array_bookmark = @bookmark.class == Array ? @bookmark : [@bookmark] %> <% @array_bookmark.each do |book| %> 回答2: Just wrap @bookmark in Array() , like this: <% Array(@bookmark).each do |book| %> Incidentally you should

问题 We are getting reports in the field, on both iOS and Android, of partially loaded profile images in our mobile app. Here is what it looks like (note that I have gaussian blurred part of the image to protect the privacy of our members, but the grey is what is actually rendered): AFAIK there is not a concept of loading "Progressive JPEGS" in UIImageView, so I am at a loss about how this image could even have been rendered at all. This code has not been modified in at least a year. All images

问题 I'm having some real difficulty with offscreen rendering with HTML5! The code I have written runs perfectly fine with Firefox, using drawImage on canvas elements draws smooth images and does so very quickly. However, using Chrome 21, the drawImage performance is just terrible. I'm unable to see where I'm going wrong. Here is a jsfiddle with some sample code: http://jsfiddle.net/DXgum/3/ In Firefox, I can get about 60fps, chrome only delivers a framerate of 10fps. The performance does not

问题 I want to draw view of camera in texture and show texture in canvas, if camera not moving. I run it for android then I got black texuture, but for WebPlayer is Good! public RawImage rawImage; private void Start() { texture = new RenderTexture(camera.pixelWidth, camera.pixelHeight, 32, RenderTextureFormat.ARGB32); texture.antiAliasing = 8; texture.Create(); } public void ShowTexture() { camera.targetTexture = texture; RenderTexture.active = texture2; if (!RenderTexture.active.IsCreated())

问题 I am using rendering plugin to generate pdf in grails. I am using a background color which is prepared by css. code is here. #container #content #mainContent .block .backgroundStyle { background: #ffffff; /* Old browsers */ /* IE9 SVG, needs conditional override of 'filter' to 'none' */ background: url(data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiA

问题 I'm creating an application for windows 8 metro, I need to render a framework control into an image and save it to hard disk but do not know how. Can I use SharpDX for this? How can I do? Thanks in advance for the help 回答1: If you follow through this thread the limitations of Metro and the reasons why it won't work are explained. The essence of it is: Sorry, but rendering Xaml to an element or capturing a screenshot of your own app did not make it into the release version. It is by design

问题 It's written everywhere that reading element.offsetWidth causes a recalculation (or even a reflow?) of the element's dimensions. However, I'm struggling with making this effect visible. In chrome I would expect I would be able to make it visible with 3 simple steps: open the Chrome dev tools Go to the element tab and select an element that you want to cause a recalc/reflow on Go to the timeline tab and start recording Go to the console and type $0.offsetWidth Now if I go to the timeline tab I

问题 I would like to understand why a JLabel, rendering HTML, shifts the vertical position of it's output text, whereas a JLabel which renders non-HTML, does not. Java version used : 1.6.0_37 Swing Look and Feel used : Windows ("com.sun.java.swing.plaf.windows.WindowsLookAndFeel") OS : Windows 7 64 Bit I did not put a SSCCE together since the code is really trivial. But if it helps please say so. I rather give an examples using an images displaying the behavior: I put a JPanel as the container

问题 I am developing an application that requires multihead rendering in OpenGL. Right now, I can render to multiple screens, but the travel of my mouse cursor is limited to a single screen. However, I'd like to be able to use the mouse cursor on all of the rendered screens. Has anyone run into this same issue, and if so, how did you go about resolving it? 回答1: I found a working solution for this. First, I had to instantiate my Ogre::RenderWindow objects in windowed mode rather than full-screen

问题 I can think of a million not-so-automatic ways to render a model in Rails, but I'm wondering if there's some built-in way to do it. I'd like to be able to this <%=@thing -%> obviously with partials you can do it (I mean, calling render :partial), but I'm wondering if there's some standard way to associate views with models. [Thanks in advance, weppos, for fixing the tags on this question :)] 回答1: If you pass a model directly to render it will attempt to render a partial for it. <%= render