Posts tagged theming
In a previous post, I walked through the simple process of creating a custom UI for a toolbar in Sencha Touch. Since theming in Sencha Touch and ExtJS 4 are extremely similar, I thought I’d walk through the same process, but with an ExtJS 4 flair.
In fact, the last post that I wrote was meant to be this one. However, as I worked through the process of creating a custom UI, I found that the setup of Compass compilation for ExtJS 4 might have some *gotchas* that could trip people up (like me), so I decided to start from the beginning, get a solid foundation, and now move on to the actual fun stuff.
Ok? Good? On we go!What We’re Going to Make
In this walkthrough, we’re going to try to accomplish a few things.
Objective #1: I want to show how it’s perfectly possible (maybe preferable?) to mix custom UIs with the stylesheets/images/etc. of the “default” ExtJS 4 theme. In this particular example, we’re going to create a custom Ext.ProgressBar UI.
Objective #2: We’re also going to create a custom stylesheet that produces only the minimum of what we need for the “application” we’re going to build. So instead of having a monster ext-all.css file More >
Recently, I’ve been concentrating a lot on theming for Sencha Touch. If you’ve read much of what I’ve posted, you know that I really love how the framework is put together, and think the SASS-y mode of custom theming is just awesome.
Of course, ExtJS 4 has many of the same theming features, and a very similar workflow for creating and compiling custom themes. I’ve been playing around within some theming experiments, and learned some frustrating lessons along the way. So I thought I’d share, step-by-step, how I set up my environment for successfully compiling custom stylesheets for ExtJS 4…just in case you’re having issuesGetting Started
First off, I’m assuming you already have Ruby and the Compass/SASS gem installed. If you don’t take a few minutes to get that done. For instructions on how to do this, check out this walkthrough.
Before breezing on, take a few deep breaths. This is a critical step…if you don’t do it right, you have hours of frustration ahead of you.
I start off with a blank project (I’m using Eclipse, so insert whatever terminology you use for your IDE). First, I create the root folder for my project. I’m calling this one “playground.”
With my root More >
During the course of developing your Sencha Touch app, you will inevitably get around to theming…after all, while the default styles are nice, they don’t exactly scream individuality. Fortunately, Sencha Touch makes theming ridiculously easy, and there are a lot of resources available to help with getting started with that.
But let’s talk about a specific example. Let’s imagine that you want to simply change the background color on your app’s toolbars. The first thing you’ll probably do is pop open Firebug or Developer Tools to inspect the CSS that’s being applied to your toolbar. Unless you’ve already customized it, you’ll probably seem something like this:
I’ve highlighted “x-toolbar-dark”, because by default, the “UI” configuration option for Ext.Toolbar is set to “dark,” which applies the “x-toolbar-dark” class to your toolbar (it will apply “x-toolbar-light” if you specify “light” for ui…more on this later).
Here’s what the toolbar actually looks like:
If you inspect the properties of this CSS class, you should see something like this:
- background-color: #456F8D;
- background-image: -webkit-gradient(linear, 50% 0%, 50% 100%, color-stop(0%, #9cbacf), color-stop(2%, #5182a5), color-stop(100%, #395c75));
- background-image: -webkit-linear-gradient(#9cbacf,#5182a5 2%,#395c75);
- background-image: linear-gradient(#9cbacf,#5182a5 2%,#395c75);
- border-color: black;
Nothing too crazy here…just some background-image gradients to give the toolbar a nice textured feel. Now at this point, you might be tempted to do something crazy, something More >
Ok, let’s recap. So far, we’ve looked at some basic concepts related to how to approach modifying a Sencha Touch app theme, as well as walked through exactly how all the pieces fit together in the SASS magic. With all this behind us, it’s finally time to create a custom .scss file–let’s get started!Setting Things Up
In the following example, we’ll be doing some minor riffs on the standard sencha-touch.css file. If you’re in the mood for a super-customized theme of your own, well, you’ve got a lot of work ahead of you. Instead of jumping headfirst into something like that, why not start with some small changes, and build from there?
First things first, we need to decide where we want our new .scss file to live. While we can put it in the /resources/sass/ folder where the other core ones are, for this example we’ll create a new folder at the same level…just to keep things straight. I’m going to call mine “custom” (pretty creative, eh?).
Now, in order for us to let Compass know where our .scss file lives, we need to create our own config.rb file (check out the last post for more info about this). I’ll create that file, and here’s More >