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62 lines
3.6 KiB
62 lines
3.6 KiB
# Pixel Art Maker
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In this exercise, you'll create your own pixel art maker which will allow a user to choose colors from a palette and then paint pixel art. The interface is completely up to you, but it could look something like this.
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More specifically, your pixel art maker should allow a user to do the following.
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1. Start with a blank canvas of pixels.
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1. Select a brush color from a palette of colors.
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1. Paint the pixels on the canvas using the brush color.
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1. Repeat step 2.
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Here's a development workflow that we recommend you use.
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1. Fork and clone this repository.
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1. Create a small, 2x2 grid canvas made up of white, square `div` tags with a border.
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1. Add an event listener to each `div` so when clicked the background turns red.
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1. Create a small palette of two colors (e.g. red and blue) below the canvas using more `div` tags.
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1. Add an event listener to these `div` tags so when clicked the brush color is saved.
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1. Expand the dimensions of the pixel canvas.
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1. Expand the palette with more colors. (i.e. red, orange, yellow, green, blue, purple, brown, gray, black, white, etc.)
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1. Expand the palette with a brush color indicator.
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1. Improve the look and feel of the canvas and color palette. Be careful not to break your program's behavior!
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**TIP:** Check out [this handy tool](http://www.colors.commutercreative.com/grid/) to see a list of all the named colors in CSS.
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### Bonus 1
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Improve the mouse so it behaves like a real paintbrush. In other words, allow the user to paint by clicking and dragging across the canvas. For this, you'll need a combination of the `mousedown`, `mouseenter`, and `mouseup` events.
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**TIP:** The [`mouseenter` event](https://developer.mozilla.org/en-US/docs/Web/Events/mouseenter) doesn't bubble up the DOM tree.
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### Bonus 2
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Add a color picker which allows the user to select any brush color using the [`<input type="color">` tag](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/color) and the [`change` event](https://developer.mozilla.org/en-US/docs/Web/Events/change).
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### Bonus 3
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Research [LocalStorage](https://developer.mozilla.org/en-US/docs/Web/API/Storage/LocalStorage) and make a way to Save and Load a drawing. Research [JSON.stringify](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify) and [JSON.parse](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse) as a way to put the drawing into LocalStorage.
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### Bonus 4
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Create a fill tool that will [flood fill](https://en.wikipedia.org/wiki/Flood_fill) boundaries with a chosen paint color.
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### Deployment
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Read over the following articles to learn how to deploy this web site to Surge.
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- [Getting started with Surge](http://surge.sh/help/getting-started-with-surge)
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- [Remembering a domain](http://surge.sh/help/remembering-a-domain)
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A good domain name for this project is `USERNAME-pixel-art-maker.surge.sh` where `USERNAME` is your GitHub username in all **lowercase** letters. Once deployed and everything works as you expect, copy your Surge URL and paste it at the top of your GitHub repository's page.
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### Resources
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- [addEventListener](https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener)
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- [className](https://developer.mozilla.org/en-US/docs/Web/API/Element/className)
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- [style](https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/style)
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- [querySelector](https://developer.mozilla.org/en-US/docs/Web/API/Document/querySelector)
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- [appendChild](https://developer.mozilla.org/en-US/docs/Web/API/Node/appendChild)
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