Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
320 views
in Technique[技术] by (71.8m points)

html - Drag objects in canvas

Im looking for an easy to use method of assigning drag behavior to multiple objects (images, shapes etc) in canvas. Does anyone have a good way or know of any libraries for dragging objects around? Thanks

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

Creating your own mouse events takes a little work - ideally you should either create or use some kind of mini-library. I'm thinking of creating something like this in the near future. Anyway, I created a drag and drop demo on jsFiddle showing how to drag images - you can view it here.

You can create draggable images like this:

var myImage = new DragImage(sourcePath, x, y);

Let me know if you have any questions about this. Hope it helps.

EDIT

There was a bug when dragging multiple images. Here is a new version.

Another thing you might want to check out is easeljs it sort of in the style of AS3... mouseEvents dragging etc...


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...