View Class

Module: _decorator Parent Module: cc

cc.view is the singleton object which represents the game window.
It's main task include:

  • Apply the design resolution policy
  • Provide interaction with the window, like resize event on web, retina display support, etc...
  • Manage the game view port which can be different with the window
  • Manage the content scale and translation

    Since the cc.view is a singleton, you don't need to call any constructor or create functions,
    the standard way to use it is by calling:
  • cc.view.methodName();

Index

Methods

Details

Methods

setTargetDensityDPI

Sets view's target-densitydpi for android mobile browser. it can be set to:
1. cc.macro.DENSITYDPI_DEVICE, value is "device-dpi"
2. cc.macro.DENSITYDPI_HIGH, value is "high-dpi" (default value)
3. cc.macro.DENSITYDPI_MEDIUM, value is "medium-dpi" (browser's default value)
4. cc.macro.DENSITYDPI_LOW, value is "low-dpi"
5. Custom value, e.g: "480"

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Defined in cocos2d/core/platform/CCView.js:254
Parameters
getTargetDensityDPI

Returns the current target-densitydpi value of cc.view.

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Returns String
Defined in cocos2d/core/platform/CCView.js:272
resizeWithBrowserSize

Sets whether resize canvas automatically when browser's size changed.
Useful only on web.

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Defined in cocos2d/core/platform/CCView.js:281
Parameters
  • enabled Boolean Whether enable automatic resize with browser's resize event
setResizeCallback

Sets the callback function for cc.view's resize action,
this callback will be invoked before applying resolution policy,
so you can do any additional modifications within the callback.
Useful only on web.

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Defined in cocos2d/core/platform/CCView.js:305
Parameters
  • callback Function | Null The callback function
setOrientation

Sets the orientation of the game, it can be landscape, portrait or auto. When set it to landscape or portrait, and screen w/h ratio doesn't fit, cc.view will automatically rotate the game canvas using CSS. Note that this function doesn't have any effect in native, in native, you need to set the application orientation in native project settings

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Defined in cocos2d/core/platform/CCView.js:319
Parameters
  • orientation Number Possible values: cc.macro.ORIENTATION_LANDSCAPE | cc.macro.ORIENTATION_PORTRAIT | cc.macro.ORIENTATION_AUTO
adjustViewPort

Sets whether the engine modify the "viewport" meta in your web page.
It's enabled by default, we strongly suggest you not to disable it.
And even when it's enabled, you can still set your own "viewport" meta, it won't be overridden
Only useful on web

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Defined in cocos2d/core/platform/CCView.js:445
Parameters
  • enabled Boolean Enable automatic modification to "viewport" meta
enableRetina

Retina support is enabled by default for Apple device but disabled for other devices,
it takes effect only when you called setDesignResolutionPolicy
Only useful on web

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Defined in cocos2d/core/platform/CCView.js:457
Parameters
  • enabled Boolean Enable or disable retina display
isRetinaEnabled

Check whether retina display is enabled.
Only useful on web

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Returns Boolean
Defined in cocos2d/core/platform/CCView.js:468
enableAntiAlias

Whether to Enable on anti-alias

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Defined in cocos2d/core/platform/CCView.js:478
Parameters
  • enabled Boolean Enable or not anti-alias
isAntiAliasEnabled

Returns whether the current enable on anti-alias

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Returns Boolean
Defined in cocos2d/core/platform/CCView.js:518
enableAutoFullScreen

If enabled, the application will try automatically to enter full screen mode on mobile devices
You can pass true as parameter to enable it and disable it by passing false.
Only useful on web

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Defined in cocos2d/core/platform/CCView.js:527
Parameters
  • enabled Boolean Enable or disable auto full screen on mobile devices
isAutoFullScreenEnabled

Check whether auto full screen is enabled.
Only useful on web

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Returns Boolean
Defined in cocos2d/core/platform/CCView.js:548
isViewReady

Get whether render system is ready(no matter opengl or canvas),
this name is for the compatibility with cocos2d-x, subclass must implement this method.

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Returns Boolean
Defined in cocos2d/core/platform/CCView.js:558
setContentTranslateLeftTop

Sets the resolution translate on View.

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Defined in cocos2d/core/platform/CCView.js:578
Parameters
getContentTranslateLeftTop

Returns the resolution translate on View

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Returns Size | Object
Defined in cocos2d/core/platform/CCView.js:588
getFrameSize

Returns the frame size of the view.
On native platforms, it returns the screen size since the view is a fullscreen view.
On web, it returns the size of the canvas's outer DOM element.

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Returns Size
Defined in cocos2d/core/platform/CCView.js:631
setFrameSize

On native, it sets the frame size of view.
On web, it sets the size of the canvas's outer DOM element.

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Defined in cocos2d/core/platform/CCView.js:642
Parameters
getVisibleSize

Returns the visible area size of the view port.

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Returns Size
Defined in cocos2d/core/platform/CCView.js:658
getVisibleSizeInPixel

Returns the visible area size of the view port.

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Returns Size
Defined in cocos2d/core/platform/CCView.js:667
getVisibleOrigin

Returns the visible origin of the view port.

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Returns Vec2
Defined in cocos2d/core/platform/CCView.js:677
getVisibleOriginInPixel

Returns the visible origin of the view port.

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Returns Vec2
Defined in cocos2d/core/platform/CCView.js:686
canSetContentScaleFactor

Returns whether developer can set content's scale factor.

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Returns Boolean
Defined in cocos2d/core/platform/CCView.js:696
getResolutionPolicy

Returns the current resolution policy

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Returns ResolutionPolicy
Defined in cocos2d/core/platform/CCView.js:705
setResolutionPolicy

Sets the current resolution policy

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Defined in cocos2d/core/platform/CCView.js:715
Parameters
setDesignResolutionSize

Sets the resolution policy with designed view size in points.
The resolution policy include:
[1] ResolutionExactFit Fill screen by stretch-to-fit: if the design resolution ratio of width to height is different from the screen resolution ratio, your game view will be stretched.
[2] ResolutionNoBorder Full screen without black border: if the design resolution ratio of width to height is different from the screen resolution ratio, two areas of your game view will be cut.
[3] ResolutionShowAll Full screen with black border: if the design resolution ratio of width to height is different from the screen resolution ratio, two black borders will be shown.
[4] ResolutionFixedHeight Scale the content's height to screen's height and proportionally scale its width
[5] ResolutionFixedWidth Scale the content's width to screen's width and proportionally scale its height
[cc.ResolutionPolicy] [Web only feature] Custom resolution policy, constructed by cc.ResolutionPolicy

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Defined in cocos2d/core/platform/CCView.js:742
Parameters
getDesignResolutionSize

Returns the designed size for the view. Default resolution size is the same as 'getFrameSize'.

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Returns Size
Defined in cocos2d/core/platform/CCView.js:832
setRealPixelResolution

Sets the container to desired pixel resolution and fit the game content to it. This function is very useful for adaptation in mobile browsers. In some HD android devices, the resolution is very high, but its browser performance may not be very good. In this case, enabling retina display is very costy and not suggested, and if retina is disabled, the image may be blurry. But this API can be helpful to set a desired pixel resolution which is in between. This API will do the following:

1. Set viewport's width to the desired width in pixel
2. Set body width to the exact pixel resolution
3. The resolution policy will be reset with designed view size in points.
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Defined in cocos2d/core/platform/CCView.js:842
Parameters
setViewPortInPoints

Sets view port rectangle with points.

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Defined in cocos2d/core/platform/CCView.js:873
Parameters
setScissorInPoints

Sets Scissor rectangle with points.

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Defined in cocos2d/core/platform/CCView.js:889
Parameters
isScissorEnabled

Returns whether GL_SCISSOR_TEST is enable

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Returns Boolean
Defined in cocos2d/core/platform/CCView.js:918
getScissorRect

Returns the current scissor rectangle

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Returns Rect
Defined in cocos2d/core/platform/CCView.js:927
setViewName

Sets the name of the view

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Defined in cocos2d/core/platform/CCView.js:947
Parameters
getViewName

Returns the name of the view

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Returns String
Defined in cocos2d/core/platform/CCView.js:958
getViewPortRect

Returns the view port rectangle.

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Returns Rect
Defined in cocos2d/core/platform/CCView.js:967
getScaleX

Returns scale factor of the horizontal direction (X axis).

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Returns Number
Defined in cocos2d/core/platform/CCView.js:976
getScaleY

Returns scale factor of the vertical direction (Y axis).

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Returns Number
Defined in cocos2d/core/platform/CCView.js:985
getDevicePixelRatio

Returns device pixel ratio for retina display.

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Returns Number
Defined in cocos2d/core/platform/CCView.js:994
convertToLocationInView

Returns the real location in view for a translation based on a related position

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Returns Vec2
Defined in cocos2d/core/platform/CCView.js:1003
Parameters
  • tx Number The X axis translation
  • ty Number The Y axis translation
  • relatedPos Object The related position object including "left", "top", "width", "height" informations
_getInstance
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Returns View
Defined in cocos2d/core/platform/CCView.js:1045

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