Skip to main content

Ext JS 4 Draw Package – Asteroids

Ext.Draw Example 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
Ext.define('MyApp.view.Asteroids', {
 requires: ['Ext.draw.*']
 extend: 'Ext.window.Window',
 alias: 'widget.asteroids',
 rotation: 0,
 posX: 0,
 posY: 0,
 drawComponent: Ext.create('Ext.draw.Component', {
  id: 'space',
  width: 300,
  height: 300,
  viewBox: false,
  gradients: [{
   id: 'g1',
   angle: 0,
   stops: {
     0: { color: '#fff'},
    20: { color: '#fff'},
   100: { color: '#fff' }
  }
}],
listeners: {
 'click': function(e, el, obj){
   var myObj = Ext.get(e.getTarget('path'));
   console.log("You clicked on " + myObj.id);
   e.stopPropagation();
 },
 element: 'el'
 },
items: [{
 type: 'path',
 stroke: 'green',
 path: 'M50 50 L40 80 L60 80 Z',
 id: 'ship',
 fill: 'url(#g1)'
}, {
 type: 'text',
 x: 25,
 y: 20,
 font: '20px Arial',
 text: 'Use your cursor keys to move the ship'
 }]
}),
moveShip: function(){
 var rad = ((this.rotation - 90) * Math.PI) / 180;
 var dx = 1 * Math.cos(rad);
 var dy = 1 * Math.sin(rad);
 var sprite = Ext.getCmp('space').surface.items.first();
 this.posX += dx;
 this.posY += dy;
 sprite.setAttributes({
  translate: {
    x: this.posX,
    y: this.posY
  }
 }, true);
Ext.Function.defer(this.moveShip, 5, this);
},
initComponent: function(){
  Ext.apply(this, {
   layout: 'fit',
   width: 400,
   height: 300,
   items: [this.drawComponent]
  });
  this.callParent(arguments);
  var nav = new Ext.util.KeyNav(Ext.getDoc(), {
    left: function(){
     var sprite = Ext.getCmp('space').surface.items.first();
     this.rotation -= 5;
     if (this.rotation < 0)
       this.rotation = 355;
     sprite.setAttributes({
      rotation: {
       degrees: this.rotation
      }
     }, true);
  },
  right: function(){
   var sprite = Ext.getCmp('space').surface.items.first();
   this.rotation += 5;
   if (this.rotation == 365)
    this.rotation = 0;
   sprite.setAttributes({
     rotation: {
      degrees: this.rotation
     }
    }, true);
  },
 up: function(){
   Ext.Function.defer(this.moveShip, 5, this);
 },
 scope: this
});
} // initComponent
});

Comments

Post a Comment

Popular posts from this blog

ExtJS - Grid panel features

What can we do with ExtJS GridPanel? I have to develop a lot of applications in my web app and I see that grid component of ExtJS may fit in. However, I am not aware of what all things I can do with the - off the shelf available framework pieces - available plug-ins in the marketplace and - custom development through my own developers This is a typical question that we hear from the business users who wants to design an application by keeping the framework’s capability in perspective. In this article I have tried to put the list of stuff you can do with grid and hopefully that shall enable you to take advantage of the beauty of ExtJS. Pre-requisites This article assumes that you are familiar with basics of ExtJS What are the available options? In this section I will be taking you through some of the commonly seen usage of ExtJS grid panel. While covering all the capabilities of grid may not be possible, I am sure it will be helpful for the business users who want to
8 comments
Read more

Ext4 Apply Store Filtering

In extjs4.1: There are many way for store filtering . Some of code i give here Filtering by single field: store . filter ( 'eyeColor' , 'Brown' );   Alternatively, if filters are configured with an  id , then existing filters store may be  replaced by new filters having the same  id . Filtering by single field: store . filter ( "email" , /\.com$/ );   Using multiple filters: store . filter ([ { property : "email" , value : /\.com$/ }, { filterFn : function ( item ) { return item . get ( "age" ) > 10 ; }} ]);   Using  Ext.util.Filter  instances instead of config objects (note that we need to specify the root config option in this case): store . filter ([ Ext . create ( ' Ext.util.Filter ' , {   property : "email" , value : /\.com$/ , root : 'data' }),   Ext . create ( ' Ext.util.Filter ' , {   filterFn : function ( item ) {   return item . get ( &
Post a Comment
Read more

EXT JS 4: EMPTY VALUE IN A COMBOBOX

EXT JS 4: EMPTY VALUE IN A COMBOBOX Often, in an Ext JS combobox, it is difficult to go back to an empty value once you have selected an item, particularly if “forceSelection” is set to true.  Here is my roundup of alternative solutions found from around the web… 1. Override beforeBlur The solution from   http://www.sencha.com/forum/showthread.php?182119-How-To-Re-Empty-ComboBox-when-forceSelection-is-Set-To-TRUE  overrides beforeBlur on the combbox to clear out lastSelection.  Here is a copy of the override from the thread: 1 2 3 4 5 6 7 8 9 10 11 12 13 Ext.create( 'Ext.form.field.ComboBox' , {      ...      allowBlank: true ,      forceSelection: true ,      beforeBlur: function (){          var value = this .getRawValue();          if (value == '' ){              this .lastSelection = [];          }          this .doQueryTask.cancel();         this .assertValue();      } }); Or to apply the o
3 comments
Read more