1592036100
A Vue.js plugin to control an HTML5 canvas using EaselJS
Thanks go to:
On the command line:
npm install vue-easeljs --save
In app.js:
Vue.use(require('vue-easeljs'));
In your Vue.js code start with an easel-canvas
component. Other components reside within it.
The earliest components are hidden by later components whenever they overlap.
Show a static image.
Attributes:
Attribute | Values | Description | Required/Default |
---|---|---|---|
align | alignment | controls what point of the image the x and y refer to. | Default: ‘top-left’ |
alpha | 0 to 1 | controls the opacity of the image. | Default: 1, completely opaque |
cache | boolean | instead of drawing from source constantly, use a cached version of the source | Default: false |
cursor | string | set the CSS mouse cursor to use when hovering over this bitmap | Default: null |
filters | filters | apply filters. | Default: null |
flip | ‘horizontal’ | ‘vertical’ | ‘both’ |
image | string | relative or absolute URL to an image file. | Required |
rotation | degrees | rotates the image. | Default: 0 |
scale | number | resizes the image. | Default: 1 |
shadow | shadow | cast an image-shaped shadow. | Default: null |
visible | boolean | draw or do not draw the bitmap on canvas | Default: true |
x | number | horizontal position based on the origin of the parent component. | Default: 0 |
y | number | vertical position based on the origin of the parent component. | Default: 0 |
Example:
<easel-bitmap
image="/images/awesome-background.jpg"
:x="0"
:y="0"
:align="['left','top']"
>
</easel-bitmap>
Give the vue-easeljs components a place to live. The canvas has no visible pixels of its own.
Attributes:
Attribute | Values | Description | Required/Default |
---|---|---|---|
anti-alias | boolean | whether or not edges should be smoothed on scaled images. | Default: true |
height | number | the pixel height of the canvas on the page. | Default: 300 |
width | number | the pixel width of the canvas on the page. | Default: 150 |
viewport-height | number | the pixel height of the canvas internally. | Default: equal to height |
viewport-width | number | the pixel width of the canvas internally. | Default: equal to width |
The width
and height
props control the size of the canvas element on the page.
The separate viewport-width
and viewport-height
props control the size of the canvas internally. For example, a canvas with width and height of 100 can fully show an element of width and height 50. But the same canvas with viewport-width
and viewport-height
set to 40 cannot fully show the same element.
The viewport-width
and viewport-height
props are a convenience feature, allowing a developer to specify subcomponents’ pixel sizes at a set size regardless of the actual size of the canvas. Setting small viewport sizes will make elements inside appear larger and pixelated, but if those elements are then scaled down they will not be pixelated. They will regain their original size and pixelation.
Example:
<easel-canvas width="500" height="100">
<easel-shape
form="rect"
:dimensions="[500,100]"
:x="0"
:y="0"
fill="#CCCCFF"
>
</easel-shape>
<easel-text
text="This is so easy!"
:x="250"
:y="75"
font="70px Calibri"
color="white"
:shadow="['#000088',3,2,3]"
:align="['center', 'alphabetical']"
>
</easel-text>
</easel-canvas>
Group other vue-easel components together and manipulate them as one. The container has no visible pixels of its own.
Attributes:
Attribute | Values | Description | Required/Default |
---|---|---|---|
alpha | 0 to 1 | controls the opacity of the container’s contents. | Default: 1, completely opaque |
cache | boolean | instead of drawing contained element from source constantly, use a cached version of all elements together | Default: false |
cursor | string | set the CSS mouse cursor to use when hovering over the elements in this container | Default: null |
filters | filters | apply filters. | Default: null |
flip | ‘horizontal’ | ‘vertical’ | ‘both’ |
rotation | degrees | rotates the container. | Default: 0 |
scale | number | resizes the container. | Default: 1 |
shadow | shadow | cast a shadow of all contained components. | Default: null |
visible | boolean | draw or do not draw the container’s elements on canvas | Default: true |
x | number | horizontal position based on the origin of the parent component. | Default: 0 |
y | number | vertical position based on the origin of the parent component. | Default: 0 |
Example:
<easel-container
flip="horizontal"
scale=".5"
:x="250"
:y="50"
>
<easel-bitmap
image="/images/wooden-sign-texture.png"
>
</easel-bitmap>
<easel-text
text="Dan's Left Shoe Emporium"
font="50px 'Times New Roman'"
:y="25"
>
</easel-text>
</easel-container>
Show a shape.
Attributes:
Attribute | Values | Description | Required/Default |
---|---|---|---|
align | alignment | controls what point of the shape the x and y refer to. | Default: ‘top-left’ |
alpha | 0 to 1 | controls the opacity of the shape. | Default: 1, completely opaque |
cache | boolean | instead of drawing the shape constantly, use a cached version of the shape | Default: false |
cursor | string | set the CSS mouse cursor to use when hovering over this shape | Default: null |
dimensions | Depends on the form. | See below. | Required |
fill | HTML color | the inside of the shape | Optional. |
filters | filters | apply filters. | Default: null |
flip | ‘horizontal’ | ‘vertical’ | ‘both’ |
form | ‘circle’ | ‘ellipse’ | ‘rect’ |
rotation | degrees | rotates the shape. | Default: 0 |
scale | number | resizes the shape. | Default: 1 |
shadow | shadow | cast a same-shape shadow. | Default: null |
stroke | HTML color | the outline of the shape. | Optional. |
visible | boolean | draw or do not draw the shape on canvas | Default: true |
x | number | horizontal position based on the origin of the parent component. | Default: 0 |
y | number | vertical position based on the origin of the parent component. | Default: 0 |
Dimensions for:
Shape | Dimension Type | Format | Value explanation |
---|---|---|---|
circle | number | the radius of the circle. | |
ellipse | array | [w, h] | the width and height of the ellipse. |
rect | array | [w, h], or [w, h, r], or [w, h, topLeft, topRight, bottomRight, bottomLeft] | the width and height of the rectangle. Optionally include the radius of rounded corners as one value or four. |
star | array | [r, s, p] | the radius, sides count, and point size of a “star”. Use point size 0 to draw a simple polygon. Max point size is 1. |
Example:
<easel-shape
form="star"
:dimensions="[100, 3, 0]"
fill="blue"
stroke="red"
:x="100"
:y="100"
>
Show a moving image. An easel-sprite
must reside in an easel-sprite-sheet
node. The easel-sprite-sheet
defines the animations that can be used by the easel-sprite
.
Attributes:
Attribute | Values | Description | Required/Default |
---|---|---|---|
align | alignment | controls what point of the image the x and y refer to. | Default: ‘top-left’ |
alpha | 0 to 1 | controls the opacity of the image. | Default: 1, completely opaque |
animation | string | name of the animation to run from the easel-sprite-sheet . |
Required |
cache | boolean | instead of drawing from source constantly, use a cached version of the source | Default: false |
cursor | string | set the CSS mouse cursor to use when hovering over this sprite | Default: null |
filters | filters | apply filters. | Default: null |
flip | ‘horizontal’ | ‘vertical’ | ‘both’ |
rotation | degrees | rotates the image. | Default: 0 |
scale | number | resizes the image. | Default: 1 |
shadow | shadow | cast an image-shaped shadow. | Default: null |
visible | boolean | draw or do not draw the sprite on canvas | Default: true |
x | number | horizontal position based on the origin of the parent component. | Default: 0 |
y | number | vertical position based on the origin of the parent component. | Default: 0 |
Example:
See the easel-sprite-sheet
example below.
Define image animations for use in a sprite.
Attributes:
Attribute | Values | Description | Required/Default |
---|---|---|---|
animations | object | defines names for animations. Each animation is a series of frames. | Required |
framerate | number | the speed the animation should play at. | Required |
frames | mixed | usually an object with format: {width: width, height: height}. | Required |
images | array | relative or absolute URL’s to image files. | Required |
EaselJS provides a lot of options for defining sprite sheets, to allow you to format the images in whatever way suits you.
A sprite sheet is a single image with a set of images on it that will be used in rotation to show an animation.
The friendliest approach is to layout the images in a grid. For example, if a character requires 32x32 pixels to show, you might create a sprite sheet with 10 frames of the character in a 320x32 pixel image. Or a 32x320 image. Or a 160x64 image. Whatever the image size, EaselJS will figure it out based on the width and height you give it.
In that case the following definition will do nicely:
<easel-sprite-sheet
:images="['/images/character.png']"
:frames="{width: 32, height: 32}"
...
>
But sometimes frames have space between them or margins around them. In these cases, you’ll need to specify more information.
In this example, there is space and margin between the frames.
<easel-sprite-sheet
:images="['/images/lots-of-characters.png']"
:frames="{width: 32, height: 32, spacing: 5, margin: 10}"
...
>
Other times, the frames are different sizes or are on different images.
In that case, this format will be required:
<easel-sprite-sheet
:images="['/images/thomasChugging.png','/images/thomasBraking.png']"
:frames="[
// x, y, width, height, imageIndex
[0, 0, 64, 32, 0],
[0, 32, 64, 32, 0],
...
]"
...
>
Animations give names to a series of frames. The name is used in the easel-sprite
component to determine what to show.
The value of an animation is a number, array, or object.
If the animation is just one frame, a number is appropriate.
If the animation is multiple frames laid out in order in the sprite sheet, then the array short form can be used. The first two values are the start and end of the animation. The third value is an optional next animation to begin when this one is done. The fourth is speed.
If the animation uses frames that are not in order, use an object with the field frames
and the optional next
and speed
.
animations: {
stand: 0,
run: [1, 4, "stand"],
fall: {
frames: [5, 1, 0, 2],
},
}
Example:
<easel-sprite-sheet
:images="['images/lastguardian-all.png']"
:frames="{width:32,height:32}"
:animations="{
stand: 7,
walk: [6, 7],
walkAndStand: [6, 7, 'stand'],
confusion: {
frames: [5, 1, 0, 2],
},
}"
:framerate="4"
>
<easel-sprite
:x="32"
:y="32"
animation="walkAndStand"
>
</easel-sprite>
>
</easel-sprite-sheet>
Show some text.
Attributes:
Attribute | Values | Description | Required/Default |
---|---|---|---|
align | alignment | controls what point of the text the x and y refer to. | Default: ‘top-left’ |
alpha | 0 to 1 | controls the opacity of the text. | Default: 1, completely opaque |
cache | boolean | instead of drawing constantly, use a cached version of the text | Default: false |
color | HTML color | the color to use for the text. | Default: ‘black’ |
cursor | string | set the CSS mouse cursor to use when hovering over this text | Default: null |
filters | filters | apply filters. | Default: null |
flip | ‘horizontal’ | ‘vertical’ | ‘both’ |
font | font | size and family of the font. Format: “Npx family”. | Default: ? |
rotation | degrees | rotates the text. | Default: 0 |
scale | number | resizes the text. | Default: 1 |
shadow | shadow | cast a text-shaped shadow. | Default: null |
text | string | the text to display. | Required |
visible | boolean | draw or do not draw the text on canvas | Default: true |
x | number | horizontal position based on the origin of the parent component. | Default: 0 |
y | number | vertical position based on the origin of the parent component. | Default: 0 |
Example:
<easel-text
text="The Ran In Span Falls Manly On The Plan"
:x="250"
:y="32"
font="20px Arial"
color="red"
>
</easel-text>
All visible components can accept an align
attribute. The align attribute defaults to 'top-left'
.
The values refer to where the x, y coordinates should lie in reference to the rest of the object.
For example, if a 50x50 square shape is aligned at ‘top-left’, and its x and y are at 65, 70, then the square’s top left point will be at 65, 70 and its bottom right point will be at 115, 120.
If the same square was aligned at ‘bottom-right’, then it’s bottom right point would be at 65, 70 and its top left point would be at 15, 20.
The field can be either a string or an array.
As a string it is formatted as ‘vertical-horizontal’.
As an array it is formatted as [vertical, horizontal]
.
Most components have these alignment options:
The easel-text
component has extra alignment options:
These are described in the whatwg spec for HTML5 canvases. In cases of text with multiple lines, the horizontal alignment value applies to every line.
Note: For backwards compatibility, the horizontal and vertical parts of the string or array can be reversed. Future major versions will obsolete this option.
The cache attribute is a boolean.
When caching is active, a rasterized version of the element is created in memory and used instead of the source material that the element uses. The element essentially becomes an EaselBitmap.
Many of an element’s props will cause a cache refresh when they are changed.
The props alpha
, flip
, rotation
, shadow
, x
, and y
are applied to an element after caching and will not cause a cache refresh. However, if an element is part of a cached EaselContainer, changing those props on the child element will refresh the container’s cache.
An animated sprite will refresh the rasterized image on each frame change.
And so a cached element should behave no differently from a non-cached element in most respects.
The difference is that caching has an impact on performance. In many cases it increases an element’s speed, but if the cache needs to refresh often it can decrease speed.
Caching exists for those performance purposes and also because it will be necessary when filters are implemented in a future version of this library.
Filters process a visual element’s pixels, applying adjustments after the element is drawn.
The filters
attribute is an array of arrays. Each filter array consists of the name of a filter followed by parameters.
Several filters can be applied to the same element.
Supplying filters forces cache to be true.
This library comes pre-built with several filters.
Blur an element. Applies to shadows as well.
['BlurFilter', x, y, quality]
Parameter | Range | Default | |
---|---|---|---|
x | horizontal bluriness | 0 - Infinity | 0 |
y | vertical bluriness | 0 - Infinity | 0 |
quality | the number of blur iterations | 0 - Infinity | 1 |
Systematically change the coloring of an element. Applies before shadowing is done. Use inside a container to include shadow.
['ColorFilter', rX, gX, bX, aX, rO, gO, bO]
Parameter | Range | Default | |
---|---|---|---|
rX | red multiplier | 0 to 1 | 1 |
gX | green multiplier | 0 to 1 | 1 |
bX | blue multiplier | 0 to 1 | 1 |
aX | alpha multiplier | 0 to 1 | 1 |
rO | red offset | -255 to 255 | 0 |
gO | green offset | -255 to 255 | 0 |
bO | blue offset | -255 to 255 | 0 |
Adjust the brightness, contrast, saturation, and hue of an element.
['ColorMatrixFilter', brightness, contrast, saturation, hue]
Parameter | Range | Default | |
---|---|---|---|
brightness | add to the brightness | -255 - 255 | undefined - no change |
contrast | add to the contrast | -100 - 100 | undefined - no change |
saturation | add to the saturation | -100 - 100 | undefined - no change |
hue | add to the hue | -180 - 180 | undefined - no change |
Add a pixelated stroke around the element.
['PixelStrokeFilter', [r, g, b, a]]
Parameter | Range | Default | |
---|---|---|---|
color | color of stroke as array of red, green, blue, alpha | array, values 0 - 255 | [0, 0, 0, 255] |
EaselJS has two filters – AlphaMapFilter and AlphaMaskFilter – that are not yet available, because their use requires complicated access to canvases. The idiom of this library is that you should never have to access a canvas. In the future this library should provide an <easel-mask>
element to do masking, making those filters unnecessary.
Create new filters by registering a class with the VueEaseljs library at runtime using VueEaseljs.registerFilter
.
See further documentation on Custom filters.
Example:
const VueEaseljs = require('vue-easeljs');
class MyFilter {
constructor(value1, value2) {
...
}
adjustContext(ctx, x, y, width, height, targetCtx, targetX, targetY) {
...
}
}
VueEaseljs.registerFilter('MyFilter', MyFilter);
The font attribute is a string that controls the family, size, and weight of text in an easel-text
component.
The string is mostly compatible with the CSS font property with some changes.
In most cases it must include the font size and font family.
Example: “16px Garamond”
It can optionally include any of font style, font variant, font weight, and font stretch, in that order, before the font size.
Example: “italic small-caps bold 16px cursive”
All visible components can drop a shadow with an optional shadow
attribute.
The field is formatted as [color, xOffset, yOffset, bluriness]
.
Shadow options:
All visible components and the canvas itself emit Vue.js events with an event object.
Event | Fired when… |
---|---|
added | Fired when the component is added to its parent. |
animationend (easel-sprite only) | Fired when an animation completes. |
change (easel-sprite only) | Fired when an animation changes. |
click | Fired when the component is clicked or tapped. |
dblclick | Fired when the component is double-clicked or tapped. |
mousedown | Fired when the component is clicked down. |
mouseout | Fired when the mouse leaves a component’s hit area. |
mouseover | Fired when the mouse enters a component’s hit area. |
pressmove | Fired when the component is dragged. |
pressup | Fired when the component is unclicked. |
removed | Fired when the component is removed from its parent. |
rollout | Fired when the mouse leaves a component’s hit area. |
rollover | Fired when the mouse enters a comopnent’s hit area. |
tick | Fired many times a second to keep the components in sync. Using this event can impact performance. |
Modifiers such as .stop
usually work with the events.
For performance reasons, the events are only emitted if a handler exists. They will not show up in the Vue.js devtools if no handler exists.
These events will be made available in a future release:
Chrome/Chromium Users:
--allow-file-access-from-files
flag. But be careful, since this flag opens your system up to some danger if the scripts you run on your page are untrustworthy. This is a limitation of canvas that applies to all canvas libraries. Fortunately, Chrome has this workaround. Unfortunately, it can stop working and require a browser restart.All users:
The EaselJS documents can be helpful. They are essential if you intend to fork this repo and make pull requests.
These will be implemented in future releases:
There are no plans to implement these features that EaselJS provides, but pull requests are accepted:
If you find a bug or want to contribute to the code or documentation, you can help by submitting an issue or a pull request.
Author: dankuck
GitHub: https://github.com/dankuck/vue-easeljs
#vuejs #javascript #vue #vue-js
1625232484
For more than two decades, JavaScript has facilitated businesses to develop responsive web applications for their customers. Used both client and server-side, JavaScript enables you to bring dynamics to pages through expanded functionality and real-time modifications.
Did you know!
According to a web development survey 2020, JavaScript is the most used language for the 8th year, with 67.7% of people choosing it. With this came up several javascript frameworks for frontend, backend development, or even testing.
And one such framework is Vue.Js. It is used to build simple projects and can also be advanced to create sophisticated apps using state-of-the-art tools. Beyond that, some other solid reasons give Vuejs a thumbs up for responsive web application development.
Want to know them? Then follow this blog until the end. Through this article, I will describe all the reasons and benefits of Vue js development. So, stay tuned.
Released in the year 2014 for public use, Vue.Js is an open-source JavaScript framework used to create UIs and single-page applications. It has over 77.4 million likes on Github for creating intuitive web interfaces.
The recent version is Vue.js 2.6, and is the second most preferred framework according to Stack Overflow Developer Survey 2019.
Every Vue.js development company is widely using the framework across the world for responsive web application development. It is centered around the view layer, provides a lot of functionality for the view layer, and builds single-page web applications.
• Vue was ranked #2 in the Front End JavaScript Framework rankings in the State of JS 2019 survey by developers.
• Approximately 427k to 693k sites are built with Vue js, according to Wappalyzer and BuiltWith statistics of June 2020.
• According to the State of JS 2019 survey, 40.5% of JavaScript developers are currently using Vue, while 34.5% have shown keen interest in using it in the future.
• In Stack Overflow's Developer Survey 2020, Vue was ranked the 3rd most popular front-end JavaScript framework.
• High-speed run-time performance
• Vue.Js uses a virtual DOM.
• The main focus is on the core library, while the collaborating libraries handle other features such as global state management and routing.
• Vue.JS provides responsive visual components.
Vue js development has certain benefits, which will encourage you to use it in your projects. For example, Vue.js is similar to Angular and React in many aspects, and it continues to enjoy increasing popularity compared to other frameworks.
The framework is only 20 kilobytes in size, making it easy for you to download files instantly. Vue.js easily beats other frameworks when it comes to loading times and usage.
Take a look at the compelling advantages of using Vue.Js for web app development.
Vue.Js is popular because it allows you to integrate Vue.js into other frameworks such as React, enabling you to customize the project as per your needs and requirements.
It helps you build apps with Vue.js from scratch and introduce Vue.js elements into their existing apps. Due to its ease of integration, Vue.js is becoming a popular choice for web development as it can be used with various existing web applications.
You can feel free to include Vue.js CDN and start using it. Most third-party Vue components and libraries are additionally accessible and supported with the Vue.js CDN.
You don't need to set up node and npm to start using Vue.js. This implies that it helps develop new web applications, just like modifying previous applications.
The diversity of components allows you to create different types of web applications and replace existing frameworks. In addition, you can also choose to hire Vue js developers to use the technology to experiment with many other JavaScript applications.
One of the main reasons for the growing popularity of Vue.Js is that the framework is straightforward to understand for individuals. This means that you can easily add Vue.Js to your web projects.
Also, Vue.Js has a well-defined architecture for storing your data with life-cycle and custom methods. Vue.Js also provides additional features such as watchers, directives, and computed properties, making it extremely easy to build modern apps and web applications with ease.
Another significant advantage of using the Vue.Js framework is that it makes it easy to build small and large-scale web applications in the shortest amount of time.
The VueJS ecosystem is vibrant and well-defined, allowing Vue.Js development company to switch users to VueJS over other frameworks for web app development.
Without spending hours, you can easily find solutions to your problems. Furthermore, VueJs lets you choose only the building blocks you need.
Although the main focus of Vue is the view layer, with the help of Vue Router, Vue Test Utils, Vuex, and Vue CLI, you can find solutions and recommendations for frequently occurring problems.
The problems fall into these categories, and hence it becomes easy for programmers to get started with coding right away and not waste time figuring out how to use these tools.
The Vue ecosystem is easy to customize and scales between a library and a framework. Compared to other frameworks, its development speed is excellent, and it can also integrate different projects. This is the reason why most website development companies also prefer the Vue.Js ecosystem over others.
Another benefit of going with Vue.Js for web app development needs is flexibility. Vue.Js provides an excellent level of flexibility. And makes it easier for web app development companies to write their templates in HTML, JavaScript, or pure JavaScript using virtual nodes.
Another significant benefit of using Vue.Js is that it makes it easier for developers to work with tools like templating engines, CSS preprocessors, and type checking tools like TypeScript.
Vue.Js is an excellent option for you because it encourages two-way communication. This has become possible with the MVVM architecture to handle HTML blocks. In this way, Vue.Js is very similar to Angular.Js, making it easier to handle HTML blocks as well.
With Vue.Js, two-way data binding is straightforward. This means that any changes made by the developer to the UI are passed to the data, and the changes made to the data are reflected in the UI.
This is also one reason why Vue.Js is also known as reactive because it can react to changes made to the data. This sets it apart from other libraries such as React.Js, which are designed to support only one-way communication.
One essential thing is well-defined documentation that helps you understand the required mechanism and build your application with ease. It shows all the options offered by the framework and related best practice examples.
Vue has excellent docs, and its API references are one of the best in the industry. They are well written, clear, and accessible in dealing with everything you need to know to build a Vue application.
Besides, the documentation at Vue.js is constantly improved and updated. It also includes a simple introductory guide and an excellent overview of the API. Perhaps, this is one of the most detailed documentation available for this type of language.
Support for the platform is impressive. In 2018, support continued to impress as every question was answered diligently. Over 6,200 problems were solved with an average resolution time of just six hours.
To support the community, there are frequent release cycles of updated information. Furthermore, the community continues to grow and develop with backend support from developers.
VueJS is an incredible choice for responsive web app development. Since it is lightweight and user-friendly, it builds a fast and integrated web application. The capabilities and potential of VueJS for web app development are extensive.
While Vuejs is simple to get started with, using it to build scalable web apps requires professionalism. Hence, you can approach a top Vue js development company in India to develop high-performing web apps.
Equipped with all the above features, it doesn't matter whether you want to build a small concept app or a full-fledged web app; Vue.Js is the most performant you can rely on.
#vue js development company #vue js development company in india #vue js development company india #vue js development services #vue js development #vue js development companies
1600583123
In this article, we are going to list out the most popular websites using Vue JS as their frontend framework.
Vue JS is one of those elite progressive JavaScript frameworks that has huge demand in the web development industry. Many popular websites are developed using Vue in their frontend development because of its imperative features.
This framework was created by Evan You and still it is maintained by his private team members. Vue is of course an open-source framework which is based on MVVM concept (Model-view view-Model) and used extensively in building sublime user-interfaces and also considered a prime choice for developing single-page heavy applications.
Released in February 2014, Vue JS has gained 64,828 stars on Github, making it very popular in recent times.
Evan used Angular JS on many operations while working for Google and integrated many features in Vue to cover the flaws of Angular.
“I figured, what if I could just extract the part that I really liked about Angular and build something really lightweight." - Evan You
#vuejs #vue #vue-with-laravel #vue-top-story #vue-3 #build-vue-frontend #vue-in-laravel #vue.js
1618971133
Vue.js is one of the most used and popular frontend development, or you can say client-side development framework. It is mainly used to develop single-page applications for both web and mobile. Famous companies like GitLab, NASA, Monito, Adobe, Accenture are currently using VueJS.
Do You Know?
Around 3079 companies reportedly use Vue.js in their tech stacks.
At GitHub, VueJS got 180.9K GitHub stars, including 28.5K GitHub forks.
Observing the increasing usage of VueJS and its robust features, various industry verticals are preferring to develop the website and mobile app Frontend using VueJS, and due to this reason, businesses are focusing on hiring VueJS developers from the top Vue.js development companies.
But the major concern of the enterprises is how to find the top companies to avail leading VueJS development service? Let’s move further and know what can help you find the best VueJS companies.
Read More - https://www.valuecoders.com/blog/technology-and-apps/top-10-vuejs-development-companies/
#hire vue js developer #hire vue.js developers #hire vue.js developer, #hire vue.js developers, #vue js development company #vue.js development company
1624691759
AppClues Infotech is the best & most reliable VueJS App Development Company in USA that builds high-quality and top-notch mobile apps with advanced methodology. The company is focused on providing innovative & technology-oriented solutions as per your specific business needs.
The organization’s VueJS developers have high experience and we have the capability of handling small to big projects. Being one of the leading mobile app development company in USA we are using the latest programming languages and technologies for their clients.
Key Elements:
· Total year of experience - 8+
· Employees Strength - 120+
· Hourly Rate - $25 – $45 / hr
· Location - New York, USA
· Successfully launched projects - 450+
VueJS Development Services by AppClues Infotech
· Custom VueJS Development
· Portal Development Solutions
· Web Application Development
· VueJS Plugin Development
· VueJS Ecommerce Development
· SPA (Single Page App) Development
· VueJS Migration
Why Hire VueJS Developers from AppClues Infotech?
· Agile & Adaptive Development
· 8+ Years of Average Experience
· 100% Transparency
· Guaranteed Bug-free VueJS Solution
· Flexible Engagement Models
· On-Time Project Delivery
· Immediate Technical Support
If you have any project ideas for VueJS app development then share your requirements with AppClues Infotech to get the best solution for your dream projects.
For more info:
Share Yoru Requirements: https://www.appcluesinfotech.com/contact-us/
Email: info@appcluesinfotech.com
Call: +1-978-309-9910**
#top vue.js development company #vue.js app development company #best vue js development company #hire top vue js developers #hire top vue.js developers in usa #vue js development company usa
1592036100
A Vue.js plugin to control an HTML5 canvas using EaselJS
Thanks go to:
On the command line:
npm install vue-easeljs --save
In app.js:
Vue.use(require('vue-easeljs'));
In your Vue.js code start with an easel-canvas
component. Other components reside within it.
The earliest components are hidden by later components whenever they overlap.
Show a static image.
Attributes:
Attribute | Values | Description | Required/Default |
---|---|---|---|
align | alignment | controls what point of the image the x and y refer to. | Default: ‘top-left’ |
alpha | 0 to 1 | controls the opacity of the image. | Default: 1, completely opaque |
cache | boolean | instead of drawing from source constantly, use a cached version of the source | Default: false |
cursor | string | set the CSS mouse cursor to use when hovering over this bitmap | Default: null |
filters | filters | apply filters. | Default: null |
flip | ‘horizontal’ | ‘vertical’ | ‘both’ |
image | string | relative or absolute URL to an image file. | Required |
rotation | degrees | rotates the image. | Default: 0 |
scale | number | resizes the image. | Default: 1 |
shadow | shadow | cast an image-shaped shadow. | Default: null |
visible | boolean | draw or do not draw the bitmap on canvas | Default: true |
x | number | horizontal position based on the origin of the parent component. | Default: 0 |
y | number | vertical position based on the origin of the parent component. | Default: 0 |
Example:
<easel-bitmap
image="/images/awesome-background.jpg"
:x="0"
:y="0"
:align="['left','top']"
>
</easel-bitmap>
Give the vue-easeljs components a place to live. The canvas has no visible pixels of its own.
Attributes:
Attribute | Values | Description | Required/Default |
---|---|---|---|
anti-alias | boolean | whether or not edges should be smoothed on scaled images. | Default: true |
height | number | the pixel height of the canvas on the page. | Default: 300 |
width | number | the pixel width of the canvas on the page. | Default: 150 |
viewport-height | number | the pixel height of the canvas internally. | Default: equal to height |
viewport-width | number | the pixel width of the canvas internally. | Default: equal to width |
The width
and height
props control the size of the canvas element on the page.
The separate viewport-width
and viewport-height
props control the size of the canvas internally. For example, a canvas with width and height of 100 can fully show an element of width and height 50. But the same canvas with viewport-width
and viewport-height
set to 40 cannot fully show the same element.
The viewport-width
and viewport-height
props are a convenience feature, allowing a developer to specify subcomponents’ pixel sizes at a set size regardless of the actual size of the canvas. Setting small viewport sizes will make elements inside appear larger and pixelated, but if those elements are then scaled down they will not be pixelated. They will regain their original size and pixelation.
Example:
<easel-canvas width="500" height="100">
<easel-shape
form="rect"
:dimensions="[500,100]"
:x="0"
:y="0"
fill="#CCCCFF"
>
</easel-shape>
<easel-text
text="This is so easy!"
:x="250"
:y="75"
font="70px Calibri"
color="white"
:shadow="['#000088',3,2,3]"
:align="['center', 'alphabetical']"
>
</easel-text>
</easel-canvas>
Group other vue-easel components together and manipulate them as one. The container has no visible pixels of its own.
Attributes:
Attribute | Values | Description | Required/Default |
---|---|---|---|
alpha | 0 to 1 | controls the opacity of the container’s contents. | Default: 1, completely opaque |
cache | boolean | instead of drawing contained element from source constantly, use a cached version of all elements together | Default: false |
cursor | string | set the CSS mouse cursor to use when hovering over the elements in this container | Default: null |
filters | filters | apply filters. | Default: null |
flip | ‘horizontal’ | ‘vertical’ | ‘both’ |
rotation | degrees | rotates the container. | Default: 0 |
scale | number | resizes the container. | Default: 1 |
shadow | shadow | cast a shadow of all contained components. | Default: null |
visible | boolean | draw or do not draw the container’s elements on canvas | Default: true |
x | number | horizontal position based on the origin of the parent component. | Default: 0 |
y | number | vertical position based on the origin of the parent component. | Default: 0 |
Example:
<easel-container
flip="horizontal"
scale=".5"
:x="250"
:y="50"
>
<easel-bitmap
image="/images/wooden-sign-texture.png"
>
</easel-bitmap>
<easel-text
text="Dan's Left Shoe Emporium"
font="50px 'Times New Roman'"
:y="25"
>
</easel-text>
</easel-container>
Show a shape.
Attributes:
Attribute | Values | Description | Required/Default |
---|---|---|---|
align | alignment | controls what point of the shape the x and y refer to. | Default: ‘top-left’ |
alpha | 0 to 1 | controls the opacity of the shape. | Default: 1, completely opaque |
cache | boolean | instead of drawing the shape constantly, use a cached version of the shape | Default: false |
cursor | string | set the CSS mouse cursor to use when hovering over this shape | Default: null |
dimensions | Depends on the form. | See below. | Required |
fill | HTML color | the inside of the shape | Optional. |
filters | filters | apply filters. | Default: null |
flip | ‘horizontal’ | ‘vertical’ | ‘both’ |
form | ‘circle’ | ‘ellipse’ | ‘rect’ |
rotation | degrees | rotates the shape. | Default: 0 |
scale | number | resizes the shape. | Default: 1 |
shadow | shadow | cast a same-shape shadow. | Default: null |
stroke | HTML color | the outline of the shape. | Optional. |
visible | boolean | draw or do not draw the shape on canvas | Default: true |
x | number | horizontal position based on the origin of the parent component. | Default: 0 |
y | number | vertical position based on the origin of the parent component. | Default: 0 |
Dimensions for:
Shape | Dimension Type | Format | Value explanation |
---|---|---|---|
circle | number | the radius of the circle. | |
ellipse | array | [w, h] | the width and height of the ellipse. |
rect | array | [w, h], or [w, h, r], or [w, h, topLeft, topRight, bottomRight, bottomLeft] | the width and height of the rectangle. Optionally include the radius of rounded corners as one value or four. |
star | array | [r, s, p] | the radius, sides count, and point size of a “star”. Use point size 0 to draw a simple polygon. Max point size is 1. |
Example:
<easel-shape
form="star"
:dimensions="[100, 3, 0]"
fill="blue"
stroke="red"
:x="100"
:y="100"
>
Show a moving image. An easel-sprite
must reside in an easel-sprite-sheet
node. The easel-sprite-sheet
defines the animations that can be used by the easel-sprite
.
Attributes:
Attribute | Values | Description | Required/Default |
---|---|---|---|
align | alignment | controls what point of the image the x and y refer to. | Default: ‘top-left’ |
alpha | 0 to 1 | controls the opacity of the image. | Default: 1, completely opaque |
animation | string | name of the animation to run from the easel-sprite-sheet . |
Required |
cache | boolean | instead of drawing from source constantly, use a cached version of the source | Default: false |
cursor | string | set the CSS mouse cursor to use when hovering over this sprite | Default: null |
filters | filters | apply filters. | Default: null |
flip | ‘horizontal’ | ‘vertical’ | ‘both’ |
rotation | degrees | rotates the image. | Default: 0 |
scale | number | resizes the image. | Default: 1 |
shadow | shadow | cast an image-shaped shadow. | Default: null |
visible | boolean | draw or do not draw the sprite on canvas | Default: true |
x | number | horizontal position based on the origin of the parent component. | Default: 0 |
y | number | vertical position based on the origin of the parent component. | Default: 0 |
Example:
See the easel-sprite-sheet
example below.
Define image animations for use in a sprite.
Attributes:
Attribute | Values | Description | Required/Default |
---|---|---|---|
animations | object | defines names for animations. Each animation is a series of frames. | Required |
framerate | number | the speed the animation should play at. | Required |
frames | mixed | usually an object with format: {width: width, height: height}. | Required |
images | array | relative or absolute URL’s to image files. | Required |
EaselJS provides a lot of options for defining sprite sheets, to allow you to format the images in whatever way suits you.
A sprite sheet is a single image with a set of images on it that will be used in rotation to show an animation.
The friendliest approach is to layout the images in a grid. For example, if a character requires 32x32 pixels to show, you might create a sprite sheet with 10 frames of the character in a 320x32 pixel image. Or a 32x320 image. Or a 160x64 image. Whatever the image size, EaselJS will figure it out based on the width and height you give it.
In that case the following definition will do nicely:
<easel-sprite-sheet
:images="['/images/character.png']"
:frames="{width: 32, height: 32}"
...
>
But sometimes frames have space between them or margins around them. In these cases, you’ll need to specify more information.
In this example, there is space and margin between the frames.
<easel-sprite-sheet
:images="['/images/lots-of-characters.png']"
:frames="{width: 32, height: 32, spacing: 5, margin: 10}"
...
>
Other times, the frames are different sizes or are on different images.
In that case, this format will be required:
<easel-sprite-sheet
:images="['/images/thomasChugging.png','/images/thomasBraking.png']"
:frames="[
// x, y, width, height, imageIndex
[0, 0, 64, 32, 0],
[0, 32, 64, 32, 0],
...
]"
...
>
Animations give names to a series of frames. The name is used in the easel-sprite
component to determine what to show.
The value of an animation is a number, array, or object.
If the animation is just one frame, a number is appropriate.
If the animation is multiple frames laid out in order in the sprite sheet, then the array short form can be used. The first two values are the start and end of the animation. The third value is an optional next animation to begin when this one is done. The fourth is speed.
If the animation uses frames that are not in order, use an object with the field frames
and the optional next
and speed
.
animations: {
stand: 0,
run: [1, 4, "stand"],
fall: {
frames: [5, 1, 0, 2],
},
}
Example:
<easel-sprite-sheet
:images="['images/lastguardian-all.png']"
:frames="{width:32,height:32}"
:animations="{
stand: 7,
walk: [6, 7],
walkAndStand: [6, 7, 'stand'],
confusion: {
frames: [5, 1, 0, 2],
},
}"
:framerate="4"
>
<easel-sprite
:x="32"
:y="32"
animation="walkAndStand"
>
</easel-sprite>
>
</easel-sprite-sheet>
Show some text.
Attributes:
Attribute | Values | Description | Required/Default |
---|---|---|---|
align | alignment | controls what point of the text the x and y refer to. | Default: ‘top-left’ |
alpha | 0 to 1 | controls the opacity of the text. | Default: 1, completely opaque |
cache | boolean | instead of drawing constantly, use a cached version of the text | Default: false |
color | HTML color | the color to use for the text. | Default: ‘black’ |
cursor | string | set the CSS mouse cursor to use when hovering over this text | Default: null |
filters | filters | apply filters. | Default: null |
flip | ‘horizontal’ | ‘vertical’ | ‘both’ |
font | font | size and family of the font. Format: “Npx family”. | Default: ? |
rotation | degrees | rotates the text. | Default: 0 |
scale | number | resizes the text. | Default: 1 |
shadow | shadow | cast a text-shaped shadow. | Default: null |
text | string | the text to display. | Required |
visible | boolean | draw or do not draw the text on canvas | Default: true |
x | number | horizontal position based on the origin of the parent component. | Default: 0 |
y | number | vertical position based on the origin of the parent component. | Default: 0 |
Example:
<easel-text
text="The Ran In Span Falls Manly On The Plan"
:x="250"
:y="32"
font="20px Arial"
color="red"
>
</easel-text>
All visible components can accept an align
attribute. The align attribute defaults to 'top-left'
.
The values refer to where the x, y coordinates should lie in reference to the rest of the object.
For example, if a 50x50 square shape is aligned at ‘top-left’, and its x and y are at 65, 70, then the square’s top left point will be at 65, 70 and its bottom right point will be at 115, 120.
If the same square was aligned at ‘bottom-right’, then it’s bottom right point would be at 65, 70 and its top left point would be at 15, 20.
The field can be either a string or an array.
As a string it is formatted as ‘vertical-horizontal’.
As an array it is formatted as [vertical, horizontal]
.
Most components have these alignment options:
The easel-text
component has extra alignment options:
These are described in the whatwg spec for HTML5 canvases. In cases of text with multiple lines, the horizontal alignment value applies to every line.
Note: For backwards compatibility, the horizontal and vertical parts of the string or array can be reversed. Future major versions will obsolete this option.
The cache attribute is a boolean.
When caching is active, a rasterized version of the element is created in memory and used instead of the source material that the element uses. The element essentially becomes an EaselBitmap.
Many of an element’s props will cause a cache refresh when they are changed.
The props alpha
, flip
, rotation
, shadow
, x
, and y
are applied to an element after caching and will not cause a cache refresh. However, if an element is part of a cached EaselContainer, changing those props on the child element will refresh the container’s cache.
An animated sprite will refresh the rasterized image on each frame change.
And so a cached element should behave no differently from a non-cached element in most respects.
The difference is that caching has an impact on performance. In many cases it increases an element’s speed, but if the cache needs to refresh often it can decrease speed.
Caching exists for those performance purposes and also because it will be necessary when filters are implemented in a future version of this library.
Filters process a visual element’s pixels, applying adjustments after the element is drawn.
The filters
attribute is an array of arrays. Each filter array consists of the name of a filter followed by parameters.
Several filters can be applied to the same element.
Supplying filters forces cache to be true.
This library comes pre-built with several filters.
Blur an element. Applies to shadows as well.
['BlurFilter', x, y, quality]
Parameter | Range | Default | |
---|---|---|---|
x | horizontal bluriness | 0 - Infinity | 0 |
y | vertical bluriness | 0 - Infinity | 0 |
quality | the number of blur iterations | 0 - Infinity | 1 |
Systematically change the coloring of an element. Applies before shadowing is done. Use inside a container to include shadow.
['ColorFilter', rX, gX, bX, aX, rO, gO, bO]
Parameter | Range | Default | |
---|---|---|---|
rX | red multiplier | 0 to 1 | 1 |
gX | green multiplier | 0 to 1 | 1 |
bX | blue multiplier | 0 to 1 | 1 |
aX | alpha multiplier | 0 to 1 | 1 |
rO | red offset | -255 to 255 | 0 |
gO | green offset | -255 to 255 | 0 |
bO | blue offset | -255 to 255 | 0 |
Adjust the brightness, contrast, saturation, and hue of an element.
['ColorMatrixFilter', brightness, contrast, saturation, hue]
Parameter | Range | Default | |
---|---|---|---|
brightness | add to the brightness | -255 - 255 | undefined - no change |
contrast | add to the contrast | -100 - 100 | undefined - no change |
saturation | add to the saturation | -100 - 100 | undefined - no change |
hue | add to the hue | -180 - 180 | undefined - no change |
Add a pixelated stroke around the element.
['PixelStrokeFilter', [r, g, b, a]]
Parameter | Range | Default | |
---|---|---|---|
color | color of stroke as array of red, green, blue, alpha | array, values 0 - 255 | [0, 0, 0, 255] |
EaselJS has two filters – AlphaMapFilter and AlphaMaskFilter – that are not yet available, because their use requires complicated access to canvases. The idiom of this library is that you should never have to access a canvas. In the future this library should provide an <easel-mask>
element to do masking, making those filters unnecessary.
Create new filters by registering a class with the VueEaseljs library at runtime using VueEaseljs.registerFilter
.
See further documentation on Custom filters.
Example:
const VueEaseljs = require('vue-easeljs');
class MyFilter {
constructor(value1, value2) {
...
}
adjustContext(ctx, x, y, width, height, targetCtx, targetX, targetY) {
...
}
}
VueEaseljs.registerFilter('MyFilter', MyFilter);
The font attribute is a string that controls the family, size, and weight of text in an easel-text
component.
The string is mostly compatible with the CSS font property with some changes.
In most cases it must include the font size and font family.
Example: “16px Garamond”
It can optionally include any of font style, font variant, font weight, and font stretch, in that order, before the font size.
Example: “italic small-caps bold 16px cursive”
All visible components can drop a shadow with an optional shadow
attribute.
The field is formatted as [color, xOffset, yOffset, bluriness]
.
Shadow options:
All visible components and the canvas itself emit Vue.js events with an event object.
Event | Fired when… |
---|---|
added | Fired when the component is added to its parent. |
animationend (easel-sprite only) | Fired when an animation completes. |
change (easel-sprite only) | Fired when an animation changes. |
click | Fired when the component is clicked or tapped. |
dblclick | Fired when the component is double-clicked or tapped. |
mousedown | Fired when the component is clicked down. |
mouseout | Fired when the mouse leaves a component’s hit area. |
mouseover | Fired when the mouse enters a component’s hit area. |
pressmove | Fired when the component is dragged. |
pressup | Fired when the component is unclicked. |
removed | Fired when the component is removed from its parent. |
rollout | Fired when the mouse leaves a component’s hit area. |
rollover | Fired when the mouse enters a comopnent’s hit area. |
tick | Fired many times a second to keep the components in sync. Using this event can impact performance. |
Modifiers such as .stop
usually work with the events.
For performance reasons, the events are only emitted if a handler exists. They will not show up in the Vue.js devtools if no handler exists.
These events will be made available in a future release:
Chrome/Chromium Users:
--allow-file-access-from-files
flag. But be careful, since this flag opens your system up to some danger if the scripts you run on your page are untrustworthy. This is a limitation of canvas that applies to all canvas libraries. Fortunately, Chrome has this workaround. Unfortunately, it can stop working and require a browser restart.All users:
The EaselJS documents can be helpful. They are essential if you intend to fork this repo and make pull requests.
These will be implemented in future releases:
There are no plans to implement these features that EaselJS provides, but pull requests are accepted:
If you find a bug or want to contribute to the code or documentation, you can help by submitting an issue or a pull request.
Author: dankuck
GitHub: https://github.com/dankuck/vue-easeljs
#vuejs #javascript #vue #vue-js