new DOM()
DOM utility class.
Provides a useful Window and Element functions as well as cross-browser compatibility buffer.
Some code originally derived from . Some parts were inspired by the research of Ryan Van Etten, released under MIT License 2013.
- Source - system/DOM.js, line 18
Members
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<static, readonly> documentBounds :Phaser.Rectangle
-
The size of the document / Layout viewport.
This incorrectly reports the dimensions in IE.
The properties change dynamically.
- Source - system/DOM.js, line 274
Properties:
Name Type Description width
number Document width in pixels.
height
number Document height in pixels.
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<static, readonly> layoutBounds :Phaser.Rectangle
-
The bounds of the Layout viewport, as discussed in ; but honoring the constraints as specified applicable viewport meta-tag.
The bounds returned are not guaranteed to be fully aligned with CSS media queries (see ).
This is not representative of the Visual bounds: in particular the non-primary axis will generally be significantly larger than the screen height on mobile devices when running with a constrained viewport.
The properties change dynamically.
- Source - system/DOM.js, line 260
Properties:
Name Type Description width
number Viewport width in pixels.
height
number Viewport height in pixels.
-
<internal, static, readonly> scrollX :number
-
A cross-browser window.scrollX.
- Internal:
- This member is internal (protected) and may be modified or removed in the future.
- Source - system/DOM.js, line 289
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<internal, static, readonly> scrollY :number
-
A cross-browser window.scrollY.
- Internal:
- This member is internal (protected) and may be modified or removed in the future.
- Source - system/DOM.js, line 301
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<static, readonly> visualBounds :Phaser.Rectangle
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The bounds of the Visual viewport, as discussed in with one difference: the viewport size excludes scrollbars, as found on some desktop browsers.
Supported mobile: iOS/Safari, Android 4, IE10, Firefox OS (maybe not Firefox Android), Opera Mobile 16
The properties change dynamically.
- Source - system/DOM.js, line 239
Properties:
Name Type Description x
number Scroll, left offset - eg. "scrollX"
y
number Scroll, top offset - eg. "scrollY"
width
number Viewport width in pixels.
height
number Viewport height in pixels.
Methods
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<static> getAspectRatio(object) → {number}
-
Get the Visual viewport aspect ratio (or the aspect ratio of an object or element)
Parameters:
Name Type Argument Default Description object
DOMElement | Object <optional>
(visualViewport) The object to determine the aspect ratio for. Must have public
width
andheight
properties or methods.Returns:
number -The aspect ratio.
- Source - system/DOM.js, line 100
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<static> getBounds(element, cushion) → {Object|boolean}
-
A cross-browser element.getBoundingClientRect method with optional cushion.
Returns a plain object containing the properties
top/bottom/left/right/width/height
with respect to the top-left corner of the current viewport. Its properties match the native rectangle. The cushion parameter is an amount of pixels (+/-) to cushion the element. It adjusts the measurements such that it is possible to detect when an element is near the viewport.Parameters:
Name Type Argument Description element
DOMElement | Object The element or stack (uses first item) to get the bounds for.
cushion
number <optional>
A +/- pixel adjustment amount.
Returns:
Object | boolean -A plain object containing the properties
top/bottom/left/right/width/height
orfalse
if a non-valid element is given.- Source - system/DOM.js, line 48
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<static> getOffset(element, point) → {Phaser.Point}
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Get the [absolute] position of the element relative to the Document.
The value may vary slightly as the page is scrolled due to rounding errors.
Parameters:
Name Type Argument Description element
DOMElement The targeted element that we want to retrieve the offset.
point
Phaser.Point <optional>
The point we want to take the x/y values of the offset.
Returns:
- A point objet with the offsetX and Y as its properties.
- Source - system/DOM.js, line 20
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<internal, static> getScreenOrientation(primaryFallback)
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Returns the device screen orientation.
Orientation values: 'portrait-primary', 'landscape-primary', 'portrait-secondary', 'landscape-secondary'.
Order of resolving: - Screen Orientation API, or variation of - Future track. Most desktop and mobile browsers. - Screen size ratio check - If fallback is 'screen', suited for desktops. - Viewport size ratio check - If fallback is 'viewport', suited for mobile. - window.orientation - If fallback is 'window.orientation', works iOS and probably most Android; non-recommended track. - Media query - Viewport size ratio check (probably only IE9 and legacy mobile gets here..)
See - https://w3c.github.io/screen-orientation/ (conflicts with mozOrientation/msOrientation) - https://developer.mozilla.org/en-US/docs/Web/API/Screen.orientation (mozOrientation) - http://msdn.microsoft.com/en-us/library/ie/dn342934(v=vs.85).aspx - https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Testing_media_queries - http://stackoverflow.com/questions/4917664/detect-viewport-orientation - http://www.matthewgifford.com/blog/2011/12/22/a-misconception-about-window-orientation
Parameters:
Name Type Argument Default Description primaryFallback
string <optional>
(none) Specify 'screen', 'viewport', or 'window.orientation'.
- Internal:
- This member is internal (protected) and may be modified or removed in the future.
- Source - system/DOM.js, line 149
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<static> inViewport(element, cushion) → {boolean}
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Tests if the given DOM element is within the Layout viewport.
The optional cushion parameter allows you to specify a distance.
inViewport(element, 100) is
true
if the element is in the viewport or 100px near it. inViewport(element, -100) istrue
if the element is in the viewport or at least 100px near it.Parameters:
Name Type Argument Description element
DOMElement | Object The DOM element to check. If no element is given it defaults to the Phaser game canvas.
cushion
number <optional>
The cushion allows you to specify a distance within which the element must be within the viewport.
Returns:
boolean -True if the element is within the viewport, or within
cushion
distance from it.- Source - system/DOM.js, line 128