File: drag_and_drop_example.html

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File: drag_and_drop_example.html
Role: Example script
Content type: text/plain
Description: Drag and drop example
Class: Canvas Events
Emulate mouse events on canvas elements
Author: By
Last change:
Date: 12 years ago
Size: 1,866 bytes
 

Contents

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<!-- /************************************************************* * This script is developed by Arturs Sosins aka ar2rsawseen, http://webcodingeasy.com * Feel free to distribute and modify code, but keep reference to its creator * * Canvas Events class extends canvas object to help to attach mouse events * to different shapes with minimal javascript code modifications. * Canvas context methods that perform actual drawing like * stroke, fill, strokeRect, fillRect, drawImage * return a shape object to which you can attach events * * For more information, examples and online documentation visit: * http://webcodingeasy.com/JS-classes/Emulate-events-on-canvas-objects **************************************************************/ --> <html> <head> </head> <body> <canvas id='canvas' width='800' height='600'></canvas> <p id='debug'></p> <script src="./canvas_events.packed.js" type="text/javascript"></script> <script> //canvas var c = document.getElementById("canvas"); //ctx var ctx = new canvas_events("canvas"); //modify coordinates var modX = 0; var modY = 0; var rect = ctx.fillRect(50,50,100,100); rect.addEvent("mouseover", function(e,args){ this.recreate(args); this.strokeStyle = "red"; this.stroke(); c.style.cursor = "pointer"; c.style.cursor = "hand"; }); rect.addEvent("mouseout", function(e,args){ this.clearRect(0,0,800,600); this.recreate(args); this.fill(); c.style.cursor = "default"; }); rect.addEvent("mousedown", function(e,args){ modX = e.elemX; modY = e.elemY; rect.addEvent("mousemove", function(e,args){ this.clearRect(0,0,800,600); this.recreate(args, e.elemX - modX, e.elemY - modY); modX = e.elemX; modY = e.elemY; this.fill(); }); }); rect.addEvent("mouseup", function(e,args){ rect.mousemove = null; }); </script> </body> </html>