JQuery Html5 Canvas Panorama Plugin Save

A tiny jQuery plugin that helps displaying panorama images

Project README


From June 11 2012 from Kei Kim([email protected])

Added a sample page users can directly view on the net

Check following pages to see ddpanorama in action: https://htmlpreview.github.io/?https://github.com/nicekei/jQuery-html5-canvas-panorama-plugin/blob/master/sample.dynamicspeed.html https://htmlpreview.github.io/?https://github.com/nicekei/jQuery-html5-canvas-panorama-plugin/blob/master/sample.eventredraw2.html (NEW) https://htmlpreview.github.io/?https://github.com/nicekei/jQuery-html5-canvas-panorama-plugin/blob/master/sample.drawlabels.html (NEW) https://htmlpreview.github.io/?https://github.com/nicekei/jQuery-html5-canvas-panorama-plugin/blob/master/sample.event.html https://htmlpreview.github.io/?https://github.com/nicekei/jQuery-html5-canvas-panorama-plugin/blob/master/sample.eventredraw.html https://htmlpreview.github.io/?https://github.com/nicekei/jQuery-html5-canvas-panorama-plugin/blob/master/sample.dynamicsize.html https://htmlpreview.github.io/?https://github.com/nicekei/jQuery-html5-canvas-panorama-plugin/blob/master/sample.dynamicinteractive.html https://htmlpreview.github.io/?https://github.com/nicekei/jQuery-html5-canvas-panorama-plugin/blob/master/sample.pos.html https://htmlpreview.github.io/?https://github.com/nicekei/jQuery-html5-canvas-panorama-plugin/blob/master/sample.loop.html https://htmlpreview.github.io/?https://github.com/nicekei/jQuery-html5-canvas-panorama-plugin/blob/master/sample.basic.html https://htmlpreview.github.io/?https://github.com/nicekei/jQuery-html5-canvas-panorama-plugin/blob/master/sample.minspeed.html https://htmlpreview.github.io/?https://github.com/nicekei/jQuery-html5-canvas-panorama-plugin/blob/master/sample.size.html https://htmlpreview.github.io/?https://github.com/nicekei/jQuery-html5-canvas-panorama-plugin/blob/master/sample.interactive.html

1.43 : Fixed a bug firing ddredraw event first when minSpeed exists(!=0) 1.42 : Fixed scrollX to be always within (-width*0.5, width*0.5) for the looped image, so that users can more conveniently draw stuffs using this parameter. Examples: ex1) width:100, scrollX:90 -> -10 ex2) width:100, scrollX:-60 -> 40
   Now ddpanorama uses imagesLoaded script to catch the image load event. 
   As the load event has some drawbacks(https://api.jquery.com/load-event/), 
   I decided to adapt other method. eg. Prior to this version, applying 
   ddpanorama after the image is fully loaded was not working well, but it 
   now just works

   Added html element overlay example. Now you can see other elements 
   positioned over canvas element. Other way of implementation might be 
   drawing some texts on canvas and checking if the user clicks one of those 
   texts’ bounding rectangles, but it would be definitely cumbersome/hard to 
   predict the final result. 
   Instead, I positioned already existing handy HTML elements on top of 
   canvas, so that users can see/control the result beforehand.

1.41 : Delayed resizing/attachment after the panorama image is completely loaded 1.40 : Now CSS is separated from codes. Note that to work as before, you need to include "ddpanorama.css" as a stylesheet in your pages

   Event prefix is changed from "ddpanorama_" to "dd". 
   eg. ddpanorama_redraw -> ddredraw

   "init" event is added which is called when the canvas is initialized 
   - a good place to retrieve canvas and apply any additional properties 
   to it

   In case the interactive flag is turned off, the panning cursor didn't 
   showup in Webkit browsers(up to 1.31). This is fixed in the current 

   Event demo(sample.event.html) code is rewritten. Now you can check 
   all the event life cycles
   ("startmove", "stopmove", "mousedown", "mouseup" events are added)

   Fullscreen demo(sample.dynamicsize.html) code is refactored to show the 
   demonstration clearly.
   Note that the ugly bottom scroll bar is gone by CSS's blessing

   Redraw event demo(sample.eventredraw.html) shows how to draw something on 
   top of the panorama

   Refactored codes to support changing "defaults" which decides panoramas' 
   default parameters

1.31 : Size change is also supported 1.30 : Support changing panorama parameters after it is created 1.24 : Fixed a scroll variable becoming NaN issue when load event is fired later 1.23 : Added startPos parameter. You can specify relative value to (imageWidth-canvasWidth). So you specify 1.0, you get the 100% scrolled image 1.22 : Changed parameter names to reduce ambiguity loopBounce -> bounce loopBorderRate -> bounceEdge loopBorderColor -> bounceEdgeColor Refactored sample htmls. Made them being generated from parameters. 1.21 : Added {loop:false} option to support not-wrapped image with a nice bounce effect (due to a user request: thanks baloneysandwiches) Split sample html pages into multiple files to show what it is clearly in details 1.12 : Added autoscroll feature(minSpeed parameter) Added interactive flag(interactive parameter) Fixed image to canvas converting method. Now use $.after to properly handle canvas insertion 1.11 : Fixed scroll popping bug 1.10 : Fixed event handling bug(mis typo?) Support resized canvas drawing when height is specified Fills the black color when canvas image is not loaded yet Added .loaded parameter to event, users can draw something until the panorama image is fully loaded 1.01 : Added event handling support 1.00 : Started ddpanorama

<Q & A>

Q. Why do you re-create already existing jQuery panorama plugin?

Yeah, it's another jQuery panorama plugin!

But the implementation details are quite different.

As the repo name implies, it internally changes image into html5 canvas. Users can drag and view 360 degree panorama through the canvas.

Q. Why canvas? Aren't image with css and javascript sufficient?

Probably correct. I chose html5 canvas for two reasons:

  1. If we draw things on canvas, we can do pretty cool stuffs with it like applying cool effects on it.

  2. Drawing things on html5 canvas is fast enough on today's mobile device.

(I want this plugin get spread :D So I added the last but not least important notes)

*. It scrolls smoothly(maybe smoother than others) *. It scrolls like iOS scrollview

Q. So what's the jQuery plugin name? jQuery-html5-canvas-panorama?

No, that's too long. Because it's jQuery plugin, it should start with "j".

But I prefer "dd", which means "dance dance". So the name is "ddpanorama" Strange enough, but this is named after an amateur photograph's blog I love I want to support that photos being displayed on the web I'll create a series of tools and plugins to support Let's dance! :D

Q. What is jquery.ba-outside-events? Is it part of the plugin?

No, absolutely not. It's a prerequisite jQuery plugin which handles outside events ex) outside mouse release event

It's a simple and works good. The author's page is here(http://benalman.com/projects/jquery-outside-events-plugin/)

Maybe later it can be included in jQuery itself! Check the new version if you have a time.

I included "jquery.ba-outside-events.min.js" file in the repository which works currently with ddpanorama.

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