Touch 2.0.2 Sencha Docs

Ext.device.Camera

Hierarchy

Ext.Base
Ext.device.Camera

Mixins

Requires

Files

This class allows you to use native APIs to take photos using the device camera.

When this singleton is instantiated, it will automatically select the correct implementation depending on the current device:

  • Sencha Packager
  • PhoneGap
  • Simulator

Both the Sencha Packager and PhoneGap implementations will use the native camera functionality to take or select a photo. The Simulator implementation will simply return fake images.

Example

You can use the capture function to take a photo:

Ext.device.Camera.capture({
    success: function(image) {
        imageView.setSrc(image);
    },
    quality: 75,
    width: 200,
    height: 200,
    destination: 'data'
});

See the documentation for capture all available configurations.

Available since: 2.0.0

Properties

Defined By

Instance properties

...

Defaults to: {data: 0, file: 1}

Available since: 2.0.0

...

Defaults to: {jpeg: 0, jpg: 0, png: 1}

Available since: 2.0.0

Get the reference to the current class from which this object was instantiated. ...

Get the reference to the current class from which this object was instantiated. Unlike statics, this.self is scope-dependent and it's meant to be used for dynamic inheritance. See statics for a detailed comparison

Ext.define('My.Cat', {
    statics: {
        speciesName: 'Cat' // My.Cat.speciesName = 'Cat'
    },

    constructor: function() {
        alert(this.self.speciesName); / dependentOL on 'this'
    },

    clone: function() {
        return new this.self();
    }
});


Ext.define('My.SnowLeopard', {
    extend: 'My.Cat',
    statics: {
        speciesName: 'Snow Leopard'         // My.SnowLeopard.speciesName = 'Snow Leopard'
    }
});

var cat = new My.Cat();                     // alerts 'Cat'
var snowLeopard = new My.SnowLeopard();     // alerts 'Snow Leopard'

var clone = snowLeopard.clone();
alert(Ext.getClassName(clone));             // alerts 'My.SnowLeopard'

Available since: 2.0.0

...

Defaults to: {library: 0, camera: 1, album: 2}

Available since: 2.0.0

Defined By

Static properties

...

Defaults to: []

Available since: 2.0.0

Methods

Defined By

Instance methods

...

Available since: 2.0.0

Returns

Call the original method that was previously overridden with override Ext.define('My.Cat', { constructor: functi...

Call the original method that was previously overridden with override

Ext.define('My.Cat', {
    constructor: function() {
        alert("I'm a cat!");
    }
});

My.Cat.override({
    constructor: function() {
        alert("I'm going to be a cat!");

        var instance = this.callOverridden();

        alert("Meeeeoooowwww");

        return instance;
    }
});

var kitty = new My.Cat(); // alerts "I'm going to be a cat!"
                          // alerts "I'm a cat!"
                          // alerts "Meeeeoooowwww"

Available since: 2.0.0

Parameters

  • args : Array/Arguments

    The arguments, either an array or the arguments object from the current method, for example: this.callOverridden(arguments)

Returns

  • Object

    Returns the result of calling the overridden method

Call the "parent" method of the current method. ...

Call the "parent" method of the current method. That is the method previously overridden by derivation or by an override (see Ext.define).

 Ext.define('My.Base', {
     constructor: function (x) {
         this.x = x;
     },

     statics: {
         method: function (x) {
             return x;
         }
     }
 });

 Ext.define('My.Derived', {
     extend: 'My.Base',

     constructor: function () {
         this.callParent([21]);
     }
 });

 var obj = new My.Derived();

 alert(obj.x);  // alerts 21

This can be used with an override as follows:

 Ext.define('My.DerivedOverride', {
     override: 'My.Derived',

     constructor: function (x) {
         this.callParent([x*2]); // calls original My.Derived constructor
     }
 });

 var obj = new My.Derived();

 alert(obj.x);  // now alerts 42

This also works with static methods.

 Ext.define('My.Derived2', {
     extend: 'My.Base',

     statics: {
         method: function (x) {
             return this.callParent([x*2]); // calls My.Base.method
         }
     }
 });

 alert(My.Base.method(10);     // alerts 10
 alert(My.Derived2.method(10); // alerts 20

Lastly, it also works with overridden static methods.

 Ext.define('My.Derived2Override', {
     override: 'My.Derived2',

     statics: {
         method: function (x) {
             return this.callParent([x*2]); // calls My.Derived2.method
         }
     }
 });

 alert(My.Derived2.method(10); // now alerts 40

Available since: 2.0.0

Parameters

  • args : Array/Arguments

    The arguments, either an array or the arguments object from the current method, for example: this.callParent(arguments)

Returns

  • Object

    Returns the result of calling the parent method

( options, scope, destination, encoding, width, height )
Allows you to capture a photo. ...

Allows you to capture a photo.

Available since: 2.0.0

Parameters

  • options : Object

    The options to use when taking a photo.

    • success : Function

      The success callback which is called when the photo has been taken.

      Parameters

      • image : String

        The image which was just taken, either a base64 encoded string or a URI depending on which option you chose (destination).

    • failure : Function

      The function which is called when something goes wrong.

    • quality : Number

      The quality of the image which is returned in the callback. This should be a percentage.

    • source : String

      The source of where the image should be taken. Available options are:

      • album - prompts the user to choose an image from an album
      • camera - prompts the user to take a new photo
      • library - prompts the user to choose an image from the library
  • scope : Object

    The scope in which to call the success and failure functions, if specified.

  • destination : String

    The destination of the image which is returned. Available options are:

    • data - returns a base64 encoded string
    • file - returns the file's URI
  • encoding : String

    The encoding of the returned image. Available options are:

    • jpg
    • png
  • width : Number

    The width of the image to return

  • height : Number

    The height of the image to return

...

Available since: 2.0.0

Parameters

...

Available since: 2.0.0

Returns the initial configuration passed to constructor. ...

Returns the initial configuration passed to constructor.

Available since: 2.0.0

Parameters

  • name : String (optional)

    When supplied, value for particular configuration option is returned, otherwise the full config object is returned.

Returns

...

Available since: 2.0.0

Parameters

( instanceConfig ) : Objectchainableprotected
Initialize configuration for this class. ...

Initialize configuration for this class. a typical example:

Ext.define('My.awesome.Class', {
    // The default config
    config: {
        name: 'Awesome',
        isAwesome: true
    },

    constructor: function(config) {
        this.initConfig(config);
    }
});

var awesome = new My.awesome.Class({
    name: 'Super Awesome'
});

alert(awesome.getName()); // 'Super Awesome'

Available since: 2.0.0

Parameters

Returns

  • Object

    mixins The mixin prototypes as key - value pairs

Fires

    ( names, callback, scope )private
    ...

    Available since: 2.0.0

    Parameters

    ( config, applyIfNotSet ) : Ext.Basechainableprivate
    ...

    Available since: 2.0.0

    Parameters

    Returns

    Get the reference to the class from which this object was instantiated. ...

    Get the reference to the class from which this object was instantiated. Note that unlike self, this.statics() is scope-independent and it always returns the class from which it was called, regardless of what this points to during run-time

    Ext.define('My.Cat', {
        statics: {
            totalCreated: 0,
            speciesName: 'Cat' // My.Cat.speciesName = 'Cat'
        },
    
        constructor: function() {
            var statics = this.statics();
    
            alert(statics.speciesName);     // always equals to 'Cat' no matter what 'this' refers to
                                            // equivalent to: My.Cat.speciesName
    
            alert(this.self.speciesName);   // dependent on 'this'
    
            statics.totalCreated++;
        },
    
        clone: function() {
            var cloned = new this.self;                      // dependent on 'this'
    
            cloned.groupName = this.statics().speciesName;   // equivalent to: My.Cat.speciesName
    
            return cloned;
        }
    });
    
    
    Ext.define('My.SnowLeopard', {
        extend: 'My.Cat',
    
        statics: {
            speciesName: 'Snow Leopard'     // My.SnowLeopard.speciesName = 'Snow Leopard'
        },
    
        constructor: function() {
            this.callParent();
        }
    });
    
    var cat = new My.Cat();                 // alerts 'Cat', then alerts 'Cat'
    
    var snowLeopard = new My.SnowLeopard(); // alerts 'Cat', then alerts 'Snow Leopard'
    
    var clone = snowLeopard.clone();
    alert(Ext.getClassName(clone));         // alerts 'My.SnowLeopard'
    alert(clone.groupName);                 // alerts 'Cat'
    
    alert(My.Cat.totalCreated);             // alerts 3
    

    Available since: 2.0.0

    Returns

    Defined By

    Static methods

    ( config, fullMerge )privatestatic
    ...

    Available since: 2.0.0

    Parameters

    ( members )chainableprivatestatic
    ...

    Available since: 2.0.0

    Parameters

    ( name, member )chainableprivatestatic
    ...

    Available since: 2.0.0

    Parameters

    ( members )chainablestatic
    Add methods / properties to the prototype of this class. ...

    Add methods / properties to the prototype of this class.

    Ext.define('My.awesome.Cat', {
        constructor: function() {
            ...
        }
    });
    
     My.awesome.Cat.implement({
         meow: function() {
            alert('Meowww...');
         }
     });
    
     var kitty = new My.awesome.Cat;
     kitty.meow();
    

    Available since: 2.0.0

    Parameters

    ( members ) : Ext.Basechainablestatic
    Add / override static properties of this class. ...

    Add / override static properties of this class.

    Ext.define('My.cool.Class', {
        ...
    });
    
    My.cool.Class.addStatics({
        someProperty: 'someValue',      // My.cool.Class.someProperty = 'someValue'
        method1: function() { ... },    // My.cool.Class.method1 = function() { ... };
        method2: function() { ... }     // My.cool.Class.method2 = function() { ... };
    });
    

    Available since: 2.0.0

    Parameters

    Returns

    ( xtype )chainableprivatestatic
    ...

    Available since: 2.0.0

    Parameters

    ( fromClass, members ) : Ext.Basechainableprivatestatic
    Borrow another class' members to the prototype of this class. ...

    Borrow another class' members to the prototype of this class.

    Ext.define('Bank', {
        money: '$$$',
        printMoney: function() {
            alert('$$$$$$$');
        }
    });
    
    Ext.define('Thief', {
        ...
    });
    
    Thief.borrow(Bank, ['money', 'printMoney']);
    
    var steve = new Thief();
    
    alert(steve.money); // alerts '$$$'
    steve.printMoney(); // alerts '$$$$$$$'
    

    Available since: 2.0.0

    Parameters

    • fromClass : Ext.Base

      The class to borrow members from

    • members : Array/String

      The names of the members to borrow

    Returns

    ( args )privatestatic
    ...

    Available since: 2.0.0

    Parameters

    Create a new instance of this Class. ...

    Create a new instance of this Class.

    Ext.define('My.cool.Class', {
        ...
    });
    
    My.cool.Class.create({
        someConfig: true
    });
    

    All parameters are passed to the constructor of the class.

    Available since: 2.0.0

    Returns

    ( alias, origin )static
    Create aliases for existing prototype methods. ...

    Create aliases for existing prototype methods. Example:

    Ext.define('My.cool.Class', {
        method1: function() { ... },
        method2: function() { ... }
    });
    
    var test = new My.cool.Class();
    
    My.cool.Class.createAlias({
        method3: 'method1',
        method4: 'method2'
    });
    
    test.method3(); // test.method1()
    
    My.cool.Class.createAlias('method5', 'method3');
    
    test.method5(); // test.method3() -> test.method1()
    

    Available since: 2.0.0

    Parameters

    ( parent )privatestatic
    ...

    Available since: 2.0.0

    Parameters

    Get the current class' name in string format. ...

    Get the current class' name in string format.

    Ext.define('My.cool.Class', {
        constructor: function() {
            alert(this.self.getName()); // alerts 'My.cool.Class'
        }
    });
    
    My.cool.Class.getName(); // 'My.cool.Class'
    

    Available since: 2.0.0

    Returns

    ...

    Available since: 2.0.0

    ( name, mixinClass )privatestatic
    Used internally by the mixins pre-processor ...

    Used internally by the mixins pre-processor

    Available since: 2.0.0

    Parameters

    ( fn, scope )chainableprivatestatic
    ...

    Available since: 2.0.0

    Parameters

    ( members ) : Ext.Basechainabledeprecatedstatic
    Override members of this class. ...

    Override members of this class. Overridden methods can be invoked via callParent.

    Ext.define('My.Cat', {
        constructor: function() {
            alert("I'm a cat!");
        }
    });
    
    My.Cat.override({
        constructor: function() {
            alert("I'm going to be a cat!");
    
            var instance = this.callParent(arguments);
    
            alert("Meeeeoooowwww");
    
            return instance;
        }
    });
    
    var kitty = new My.Cat(); // alerts "I'm going to be a cat!"
                              // alerts "I'm a cat!"
                              // alerts "Meeeeoooowwww"
    

    As of 4.1, direct use of this method is deprecated. Use Ext.define instead:

    Ext.define('My.CatOverride', {
        override: 'My.Cat',
        constructor: function() {
            alert("I'm going to be a cat!");
    
            var instance = this.callParent(arguments);
    
            alert("Meeeeoooowwww");
    
            return instance;
        }
    });
    

    The above accomplishes the same result but can be managed by the Ext.Loader which can properly order the override and its target class and the build process can determine whether the override is needed based on the required state of the target class (My.Cat).

    Available since: 2.0.0

    This method has been deprecated since 4.1.0

    Please use Ext.define instead

    Parameters

    • members : Object

      The properties to add to this class. This should be specified as an object literal containing one or more properties.

    Returns

    ...

    Available since: 2.0.0