Texty
light-weight canvas text editing.
Implementation
Texty is not an IDE, nor a generic rich text editor, it's purpose is to remain light-weight and provide textbox-like editing for canvas. Texty knows nothing of the DOM, and does not interact with the canvas directly, the only interaction is by passing a CanvasRenderingContext2d to the Text#draw(ctx) method, all caret movements, selection, etc are performed via method calls, the event handlers themselves are designed by the developer however the example.html file contains an example of these basic interactions.
CSS Styling
Texty is fully styleable via CSS, performed using the technique mentioned in the article "Styling canvas drawings with CSS". This even works for inheritance, for example you do not need to define the font-family specifically for the ".text" selector, as the computed style will inherit this.
body {
font: 14px helvetica, arial, sans-serif;
padding: 20px;
}
.text {
font-size: 20px;
color: #888;
}
.text .line {
list-style: decimal;
line-height: 1.2;
}
.text .caret {
color: red;
}
.text .selection {
background: rgba(255,0,0,0.1);
}Build
To build texty you'll need uglifyjs installed, after which you can simply run:
$ make
However pre-built scripts are available in ./build:
./build/texty.js
./build/texty.min.js
Texty is roughly 1000 LOC, and when minified is only 24kb.
Browser support
Texty is tested in the following browsers but feel free to contribute!
- Chrome 12.x
- Safari 5.x
Links
- try it in your browser
License
(The MIT License)
Copyright (c) 2011 TJ Holowaychuk <tj@learnboost.com>
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.