Jump to content

01271
 Share

Recommended Posts

Hey all, I want to resize an element but not as often as I currently do it.

Right now I have a project with an html element that gets resized on every frame and it runs on every update.

game.gui.TextArea = me.Renderable.extend({
  init: function() {
    this.textarea = document.createElement('textarea');
    this.textarea.id = 'textHistory';
    this.textarea.readOnly = "true";
    this.textarea.disabled = "true";
    me.video.getWrapper().appendChild(this.textarea);

  },
  update: function() {
    videoPos = me.video.getPos();
    this.textarea.style = 'width:' + (window.innerWidth - videoPos.width)  + 'px; height:' + videoPos.height + 'px;';
  }
});

I'm concerned about this, this code will run way more often than it needs. Not sure about the performance impact but it only needs to run when the window size is updated. Is there a way I can piggyback on any melonjs functions that resize the canvas and only run it then?

Link to comment
Share on other sites

Hello,

you should be able to use the WINDOW_ONRESIZE event, that is triggered every time the display is resize, so for example  :

var self = this;

me.event.subscribe(me.event.WINDOW_ONRESIZE, function () {
   var videoPos = me.video.getPos();
   self.textarea.style = 'width:' + (window.innerWidth - videoPos.width)  + 'px; height:' + videoPos.height + 'px;';
});

also the size you can also directly use the default game camera/viewport (me.game.viewport.width and me.game.viewport.height) that is also automatically resize to match with the canvas size.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...