I'm relatively new to google gwt and I'm search for a method, which is comparable to the paint-method in java. I would like to draw small graphics on top of other elements and pictures. I know, there exists the Canvas-class, but I didn't found any way to use it as an overlay painter.
I hope someone can help.
Best regards,
Michael
If you need simple overlays, I would use pre-made images and the css z-index and position: relative attributes to put them on top of each other.
for actual painting you could use the GWT's Canvas (HTML5 canvas) or a 3rd party library, like RaphaelGWT, which uses SVG.
Related
Is there any native Flutter library for achieving Material Design Speed Dial?
I found only this FAB documentation, but it doesn't say anything about creating a menu out of it, though Material Design FAB documentation says at the top that FAB is supported in Flutter (it doesn't say how much it supports. Only that it supports, which would lead me to understand that it supports everything in the page).
Should I instead develop mine or look for third party libraries?
Nevermind. I'm creating my own Speed Dial. For now, it is part of a very simple project, but once I test it more and add animations, I'll share a final link.
It still don't have animations, because I'm using Visibility for showing or hiding the buttons, and it was tested only in Scaffold's FAB, placed on bottom right of screen, so no link for now, sorry. Less than an alpha right now (and I still need to study how one shares an API for adding to dependency).
I hope I'll be able to create a simple and light enough implementation. Easy to use and easy to understand if anybody wishes to take a look into the code later on. I've seen some implementations, but they are very complex and create (in my view) unnecessary extra widgets.
Some implementations I found:
https://flutterawesome.com/flutter-plugin-to-implement-a-material-design-speed-dial/
https://flutterawesome.com/flutter-floating-action-button-with-speed-dial/
Some SmartGWT components are composed by a lot of small images. This is the case of IButton for example that gets rendered using images.
I want to adapt the original SmartGWT CSS to fit my needs, that are basically color changes.
This answer is not quite accurate..
If you have staff with experience with image-based skinning and appropriate tools (eg Adobe Fireworks), start from whatever skin you like.
If you don't, and you need to change the colors but don't care about niceties like rounded corners in older IE (which are impossible without images), start from Simplicity, or start from the CSS3 rendering mode provided for the 3 most popular skins (from 3.1 on):
http://blog.isomorphic.com/css3-mode/
The latter approach (CSS3 mode) is more visually rich than Simplicity.
It seems, that the best way of skinning an SmartGWT application is starting from the Simplicity theme.
Isomorphic team suggest starting from this theme, as it uses less images that the others themes.
As far as I've read, everything should be done by hand (editing images, and CSS).
Is there any pre-built sample of iphone like bottom navigation using CSS 3? is it possible to make these icons in CSS3, without images?
You may want to check out Sencha Touch, they provide a full HTML5 version of many common UI components for mobile web site development, including tab bars.
Try my itabbar www.itabbar.com
Here a full css tabbar with jquery to change button color on click
http://jsfiddle.net/onigetoc/4CgxM/ (View on Chrome or Safari)
I think this is possible to reproduce the basic icon with basic shapes in css
For the moment I havec make the most basic look hat http://frommelt.fr/exos/icon.html
Of curse I don't lets go and I will make the other :)
Actually, in ChocolateChip-UI we use SVG images as background image masks and CSS3 background gradients to exactly recreate the iPhone toolbar icons. Webkit background image masks with with background images and background colors. Since CSS3 gradients are rendered by the browser as a canvas background image, they work just fine. The svg images are just black and transparent because they were created to use as masks with background colors.
That said, yes you could reproduce the images with just HTML elements and CSS. It would require a bunch of pieces, using a mix of relative and absolute positioning and would be very, very tedious to get all the pieces positioned properly and get the background gradients to match up perfectly. And then you would have to write some really complicated CSS to handle the hover state. I could do that but would I want to? Hell no! Using the SVG image masks is just so much easier. And because the SVG is just text, it's easy to edit them at any time. Oh yeah, and SVG is vector-based so you can scale them to any size without pixelation.
Im looking for some sort of SDK or library on top of iOS, which might help me produce iPad/IPHONE games.
The sort of functionality Im looking for is..
GUI elements, skinnable buttons, lists, dialog boxes etc
Any routines to help with tile based games
Functions to paint and move sprites
Any vector libs to help with rotation, skew etc
Im confident I could write all this from scratch, but Im guessing theres some libraries already out there. Im not afraid of getting my hands dirty in code, so please dont slate me for asking for prebuilt stuff :)
Thanks
The defacto answer is cocos2d. Open source, MIT licensed, sprite library (including tiling map support baked in).
As for UI - Cocos has some helper utilities for dealing with UI elements, however its not very hard to skin UIKit (though the more customization you do the more drawing code you end up with).
most of the bits are already available in UIKit, but http://www.cocos2d-iphone.org/ is a framework worth looking at for game dev.
Two notes about cocos-2d:
- cocos has its own implementation of UI control called MenuItem. It can be used to easily emulate the behaviors of Buttons. There is also a simple layout algorithm to dispose this items in columns, rows, grids. There are also other controls that allow you to display text on the screen (labels). No text editors though, AFAIK.
- cocos can be easily integrated with the rest of UIKit, so it is simple to show standard "message boxes", some UIKit elements on top or behind it. I was able to use the cocos view as the child view of a UIImagePicker, for example.
I'm trying to write an app that uses rounded corners for framing the app. I've found a package on google code that has a RoundedLinePanel and it seems to work... kind of.
I'm wondering a few things. Is this what people are using for creating divs with round corners in GWT? The release notes say it hasn't changed in almost a year.
Also, I can't seem to set a fixed height of this div (setHeight sets it on the wrapper div, not the inner one). so it's not useful to me as I have a fixed height app.
Finally, if anyone can suggest a better mechanism for creating rounded corner divs in GWT I'm all ears.
There is a beautiful way to rounded corners using CSS 3 (which thus doesn't work in IE<=8 , but will in IE9 developer preview). Take a look at http://css3please.com/ to see the styles involved. It's fairly simple using a border-radius (or -moz-border-radius or -webkit-border-radius property). In GWT just add a Style Class Name you want to the elements you want to have a rounded border and you are go. Of course supporting rounded corners in legacy browsers is harder, but do you need to do it?
For legacy browsers it is quite harder, depending on the actual context. It always involves images for the borders. You have to create images that mask the border of the box. What works is the trick described in this answer. To use this in GWT you can use either uibinder, htmlelement or you create your own widget. A broader explanation of the technique can also be found here.
The solution most commonly found, the decoratorPanel, is deprecated in the current version of GWT (if you use it with GWT 2.1.1, for example, you'll wind up with a mess of incompatilbility between the GWT-required doctype, the decoratorPanel, and IE, especially IE8).
The required GWT 2.1.1 doctype (!doctype html) also disables the popular rounded-corners.htc for IE8.
You can use the CSS3 series of rounded corner properties to add classes, but they will not work in IE versions prior to 9.
JQuery and other javascript rounded corners have a high probability of conflicting with the native GWT js, so we abandoned those as a possible solution, though I personally did no testing for these.
We wound up having to use rounded corner images in order to be truly cross-browser compliant and create a consistent look.