@azerion/phaser
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A fast, free and fun HTML5 Game Framework for Desktop and Mobile web browsers.
1,544 lines (1,191 loc) • 56.7 kB
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<title>Phaser Source: src/utils/DOM.js</title>
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<a href="Phaser.Component.BringToTop.html">BringToTop</a>
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<a href="Phaser.Component.Core.html">Core</a>
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<a href="Phaser.Component.Crop.html">Crop</a>
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<a href="Phaser.Component.Delta.html">Delta</a>
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<a href="Phaser.Component.Health.html">Health</a>
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<a href="Phaser.Component.InCamera.html">InCamera</a>
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<a href="Phaser.Component.InputEnabled.html">InputEnabled</a>
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<a href="Phaser.Component.InWorld.html">InWorld</a>
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<a href="Phaser.Component.LifeSpan.html">LifeSpan</a>
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<a href="Phaser.Component.LoadTexture.html">LoadTexture</a>
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<a href="Phaser.Component.Overlap.html">Overlap</a>
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<a href="Phaser.Component.PhysicsBody.html">PhysicsBody</a>
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<a href="Phaser.Component.Reset.html">Reset</a>
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<a href="Phaser.Component.ScaleMinMax.html">ScaleMinMax</a>
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<a href="Phaser.Component.Smoothed.html">Smoothed</a>
</li>
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<a href="Phaser.Create.html">Create</a>
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<a href="Phaser.Creature.html">Creature</a>
</li>
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<a href="Phaser.Device.html">Device</a>
</li>
<li class="class-depth-1">
<a href="Phaser.DeviceButton.html">DeviceButton</a>
</li>
<li class="class-depth-1">
<a href="Phaser.DOM.html">DOM</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Easing.html">Easing</a>
</li>
<li class="class-depth-2">
<a href="Phaser.Easing.Back.html">Back</a>
</li>
<li class="class-depth-2">
<a href="Phaser.Easing.Bounce.html">Bounce</a>
</li>
<li class="class-depth-2">
<a href="Phaser.Easing.Circular.html">Circular</a>
</li>
<li class="class-depth-2">
<a href="Phaser.Easing.Cubic.html">Cubic</a>
</li>
<li class="class-depth-2">
<a href="Phaser.Easing.Elastic.html">Elastic</a>
</li>
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<a href="Phaser.Easing.Exponential.html">Exponential</a>
</li>
<li class="class-depth-2">
<a href="Phaser.Easing.Linear.html">Linear</a>
</li>
<li class="class-depth-2">
<a href="Phaser.Easing.Quadratic.html">Quadratic</a>
</li>
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<a href="Phaser.Easing.Quartic.html">Quartic</a>
</li>
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<a href="Phaser.Easing.Quintic.html">Quintic</a>
</li>
<li class="class-depth-2">
<a href="Phaser.Easing.Sinusoidal.html">Sinusoidal</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Ellipse.html">Ellipse</a>
</li>
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<a href="Phaser.Events.html">Events</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Filter.html">Filter</a>
</li>
<li class="class-depth-1">
<a href="Phaser.FlexGrid.html">FlexGrid</a>
</li>
<li class="class-depth-1">
<a href="Phaser.FlexLayer.html">FlexLayer</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Frame.html">Frame</a>
</li>
<li class="class-depth-1">
<a href="Phaser.FrameData.html">FrameData</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Game.html">Game</a>
</li>
<li class="class-depth-1">
<a href="Phaser.GameObjectCreator.html">GameObjectCreator</a>
</li>
<li class="class-depth-1">
<a href="Phaser.GameObjectFactory.html">GameObjectFactory</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Gamepad.html">Gamepad</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Graphics.html">Graphics</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Group.html">Group</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Hermite.html">Hermite</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Image.html">Image</a>
</li>
<li class="class-depth-1">
<a href="Phaser.ImageCollection.html">ImageCollection</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Input.html">Input</a>
</li>
<li class="class-depth-1">
<a href="Phaser.InputHandler.html">InputHandler</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Key.html">Key</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Keyboard.html">Keyboard</a>
</li>
<li class="class-depth-1">
<a href="Phaser.KeyCode.html">KeyCode</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Line.html">Line</a>
</li>
<li class="class-depth-1">
<a href="Phaser.LinkedList.html">LinkedList</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Loader.html">Loader</a>
</li>
<li class="class-depth-1">
<a href="Phaser.LoaderParser.html">LoaderParser</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Math.html">Math</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Matrix.html">Matrix</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Mouse.html">Mouse</a>
</li>
<li class="class-depth-1">
<a href="Phaser.MSPointer.html">MSPointer</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Net.html">Net</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Particle.html">Particle</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Particles.html">Particles</a>
</li>
<li class="class-depth-2">
<a href="Phaser.Particles.Arcade.html">Arcade</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Particles.Arcade.Emitter.html">Emitter</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Path.html">Path</a>
</li>
<li class="class-depth-1">
<a href="Phaser.PathFollower.html">PathFollower</a>
</li>
<li class="class-depth-1">
<a href="Phaser.PathPoint.html">PathPoint</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Physics.html">Physics</a>
</li>
<li class="class-depth-2">
<a href="Phaser.Physics.Arcade.html">Arcade</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.Arcade.Body.html">Body</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.Arcade.TilemapCollision.html">TilemapCollision</a>
</li>
<li class="class-depth-2">
<a href="Phaser.Physics.Ninja.html">Ninja</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.Ninja.AABB.html">AABB</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.Ninja.Body.html">Body</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.Ninja.Circle.html">Circle</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.Ninja.Tile.html">Tile</a>
</li>
<li class="class-depth-2">
<a href="Phaser.Physics.P2.html">P2</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.P2.Body.html">Body</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.P2.BodyDebug.html">BodyDebug</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.P2.CollisionGroup.html">CollisionGroup</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.P2.ContactMaterial.html">ContactMaterial</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.P2.DistanceConstraint.html">DistanceConstraint</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.P2.FixtureList.html">FixtureList</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.P2.GearConstraint.html">GearConstraint</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.P2.InversePointProxy.html">InversePointProxy</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.P2.LockConstraint.html">LockConstraint</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.P2.Material.html">Material</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.P2.PointProxy.html">PointProxy</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.P2.PrismaticConstraint.html">PrismaticConstraint</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.P2.RevoluteConstraint.html">RevoluteConstraint</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.P2.RotationalSpring.html">RotationalSpring</a>
</li>
<li class="class-depth-3">
<a href="Phaser.Physics.P2.Spring.html">Spring</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Plugin.html">Plugin</a>
</li>
<li class="class-depth-2">
<a href="Phaser.Plugin.PathManager.html">PathManager</a>
</li>
<li class="class-depth-1">
<a href="Phaser.PluginManager.html">PluginManager</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Point.html">Point</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Pointer.html">Pointer</a>
</li>
<li class="class-depth-1">
<a href="Phaser.PointerMode.html">PointerMode</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Polygon.html">Polygon</a>
</li>
<li class="class-depth-1">
<a href="Phaser.QuadTree.html">QuadTree</a>
</li>
<li class="class-depth-1">
<a href="Phaser.RandomDataGenerator.html">RandomDataGenerator</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Rectangle.html">Rectangle</a>
</li>
<li class="class-depth-1">
<a href="Phaser.RenderTexture.html">RenderTexture</a>
</li>
<li class="class-depth-1">
<a href="Phaser.RequestAnimationFrame.html">RequestAnimationFrame</a>
</li>
<li class="class-depth-1">
<a href="Phaser.RetroFont.html">RetroFont</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Rope.html">Rope</a>
</li>
<li class="class-depth-1">
<a href="Phaser.RoundedRectangle.html">RoundedRectangle</a>
</li>
<li class="class-depth-1">
<a href="Phaser.ScaleManager.html">ScaleManager</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Signal.html">Signal</a>
</li>
<li class="class-depth-1">
<a href="Phaser.SignalBinding_.html">SignalBinding</a>
</li>
<li class="class-depth-1">
<a href="Phaser.SinglePad.html">SinglePad</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Sound.html">Sound</a>
</li>
<li class="class-depth-1">
<a href="Phaser.SoundManager.html">SoundManager</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Sprite.html">Sprite</a>
</li>
<li class="class-depth-1">
<a href="Phaser.SpriteBatch.html">SpriteBatch</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Stage.html">Stage</a>
</li>
<li class="class-depth-1">
<a href="Phaser.State.html">State</a>
</li>
<li class="class-depth-1">
<a href="Phaser.StateManager.html">StateManager</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Text.html">Text</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Tile.html">Tile</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Tilemap.html">Tilemap</a>
</li>
<li class="class-depth-1">
<a href="Phaser.TilemapLayer.html">TilemapLayer</a>
</li>
<li class="class-depth-1">
<a href="Phaser.TilemapParser.html">TilemapParser</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Tileset.html">Tileset</a>
</li>
<li class="class-depth-1">
<a href="Phaser.TileSprite.html">TileSprite</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Time.html">Time</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Timer.html">Timer</a>
</li>
<li class="class-depth-1">
<a href="Phaser.TimerEvent.html">TimerEvent</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Touch.html">Touch</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Tween.html">Tween</a>
</li>
<li class="class-depth-1">
<a href="Phaser.TweenData.html">TweenData</a>
</li>
<li class="class-depth-1">
<a href="Phaser.TweenManager.html">TweenManager</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Utils.html">Utils</a>
</li>
<li class="class-depth-2">
<a href="Phaser.Utils.Debug.html">Debug</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Video.html">Video</a>
</li>
<li class="class-depth-1">
<a href="Phaser.Weapon.html">Weapon</a>
</li>
<li class="class-depth-1">
<a href="Phaser.World.html">World</a>
</li>
<li class="class-depth-1">
<a href="PIXI.AbstractFilter.html">AbstractFilter</a>
</li>
<li class="class-depth-1">
<a href="PIXI.BaseTexture.html">BaseTexture</a>
</li>
<li class="class-depth-1">
<a href="PIXI.CanvasBuffer.html">CanvasBuffer</a>
</li>
<li class="class-depth-1">
<a href="PIXI.CanvasGraphics.html">CanvasGraphics</a>
</li>
<li class="class-depth-1">
<a href="PIXI.CanvasMaskManager.html">CanvasMaskManager</a>
</li>
<li class="class-depth-1">
<a href="PIXI.CanvasPool.html">CanvasPool</a>
</li>
<li class="class-depth-1">
<a href="PIXI.CanvasRenderer.html">CanvasRenderer</a>
</li>
<li class="class-depth-1">
<a href="PIXI.CanvasTinter.html">CanvasTinter</a>
</li>
<li class="class-depth-1">
<a href="PIXI.ComplexPrimitiveShader.html">ComplexPrimitiveShader</a>
</li>
<li class="class-depth-1">
<a href="PIXI.DisplayObjectContainer.html">DisplayObjectContainer</a>
</li>
<li class="class-depth-1">
<a href="PIXI.EarCut.html">EarCut</a>
</li>
<li class="class-depth-1">
<a href="PIXI.Event.html">Event</a>
</li>
<li class="class-depth-1">
<a href="PIXI.EventTarget.html">EventTarget</a>
</li>
<li class="class-depth-1">
<a href="PIXI.FilterTexture.html">FilterTexture</a>
</li>
<li class="class-depth-1">
<a href="PIXI.Graphics.html">Graphics</a>
</li>
<li class="class-depth-1">
<a href="PIXI.GraphicsData.html">GraphicsData</a>
</li>
<li class="class-depth-1">
<a href="PIXI.PIXI.html">PIXI</a>
</li>
<li class="class-depth-2">
<a href="PIXI.PIXI.DisplayObject.html">DisplayObject</a>
</li>
<li class="class-depth-1">
<a href="PIXI.PixiFastShader.html">PixiFastShader</a>
</li>
<li class="class-depth-1">
<a href="PIXI.PixiShader.html">PixiShader</a>
</li>
<li class="class-depth-1">
<a href="PIXI.PrimitiveShader.html">PrimitiveShader</a>
</li>
<li class="class-depth-1">
<a href="PIXI.RenderTexture.html">RenderTexture</a>
</li>
<li class="class-depth-1">
<a href="PIXI.Rope.html">Rope</a>
</li>
<li class="class-depth-1">
<a href="PIXI.Sprite.html">Sprite</a>
</li>
<li class="class-depth-1">
<a href="PIXI.SpriteBatch.html">SpriteBatch</a>
</li>
<li class="class-depth-1">
<a href="PIXI.Strip.html">Strip</a>
</li>
<li class="class-depth-1">
<a href="PIXI.StripShader.html">StripShader</a>
</li>
<li class="class-depth-1">
<a href="PIXI.Texture.html">Texture</a>
</li>
<li class="class-depth-1">
<a href="PIXI.TilingSprite.html">TilingSprite</a>
</li>
<li class="class-depth-1">
<a href="PIXI.WebGLBlendModeManager.html">WebGLBlendModeManager</a>
</li>
<li class="class-depth-1">
<a href="PIXI.WebGLFastSpriteBatch.html">WebGLFastSpriteBatch</a>
</li>
<li class="class-depth-1">
<a href="PIXI.WebGLFilterManager.html">WebGLFilterManager</a>
</li>
<li class="class-depth-1">
<a href="PIXI.WebGLRenderer.html">WebGLRenderer</a>
</li>
</ul>
</li>
<li class="dropdown">
<a href="global.html" class="dropdown-toggle" data-toggle="dropdown">Global<b
class="caret"></b></a>
<ul class="dropdown-menu ">
<li class="class-depth-0">
<a href="global.html#ANGLE_DOWN">ANGLE_DOWN</a>
</li>
<li class="class-depth-0">
<a href="global.html#ANGLE_LEFT">ANGLE_LEFT</a>
</li>
<li class="class-depth-0">
<a href="global.html#ANGLE_NORTH_EAST">ANGLE_NORTH_EAST</a>
</li>
<li class="class-depth-0">
<a href="global.html#ANGLE_NORTH_WEST">ANGLE_NORTH_WEST</a>
</li>
<li class="class-depth-0">
<a href="global.html#ANGLE_RIGHT">ANGLE_RIGHT</a>
</li>
<li class="class-depth-0">
<a href="global.html#ANGLE_SOUTH_EAST">ANGLE_SOUTH_EAST</a>
</li>
<li class="class-depth-0">
<a href="global.html#ANGLE_SOUTH_WEST">ANGLE_SOUTH_WEST</a>
</li>
<li class="class-depth-0">
<a href="global.html#ANGLE_UP">ANGLE_UP</a>
</li>
<li class="class-depth-0">
<a href="global.html#AUTO">AUTO</a>
</li>
<li class="class-depth-0">
<a href="global.html#BITMAPDATA">BITMAPDATA</a>
</li>
<li class="class-depth-0">
<a href="global.html#BITMAPTEXT">BITMAPTEXT</a>
</li>
<li class="class-depth-0">
<a href="global.html#blendModes">blendModes</a>
</li>
<li class="class-depth-0">
<a href="global.html#BOTTOM_CENTER">BOTTOM_CENTER</a>
</li>
<li class="class-depth-0">
<a href="global.html#BOTTOM_LEFT">BOTTOM_LEFT</a>
</li>
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<a href="global.html#BOTTOM_RIGHT">BOTTOM_RIGHT</a>
</li>
<li class="class-depth-0">
<a href="global.html#BUTTON">BUTTON</a>
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<li class="class-depth-0">
<a href="global.html#CANVAS">CANVAS</a>
</li>
<li class="class-depth-0">
<a href="global.html#CANVAS_FILTER">CANVAS_FILTER</a>
</li>
<li class="class-depth-0">
<a href="global.html#CENTER">CENTER</a>
</li>
<li class="class-depth-0">
<a href="global.html#CIRCLE">CIRCLE</a>
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<a href="global.html#CREATURE">CREATURE</a>
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<a href="global.html#displayList">displayList</a>
</li>
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<a href="global.html#DOWN">DOWN</a>
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<a href="global.html#ELLIPSE">ELLIPSE</a>
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<a href="global.html#emit">emit</a>
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<a href="global.html#EMITTER">EMITTER</a>
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<a href="global.html#GAMES">GAMES</a>
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<a href="global.html#GRAPHICS">GRAPHICS</a>
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<a href="global.html#GROUP">GROUP</a>
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<a href="global.html#HEADLESS">HEADLESS</a>
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<a href="global.html#HORIZONTAL">HORIZONTAL</a>
</li>
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<a href="global.html#IMAGE">IMAGE</a>
</li>
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<a href="global.html#LANDSCAPE">LANDSCAPE</a>
</li>
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<a href="global.html#LEFT">LEFT</a>
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<a href="global.html#LEFT_BOTTOM">LEFT_BOTTOM</a>
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<a href="global.html#LEFT_CENTER">LEFT_CENTER</a>
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<a href="global.html#LEFT_TOP">LEFT_TOP</a>
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<a href="global.html#LINE">LINE</a>
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<a href="global.html#listeners">listeners</a>
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<a href="global.html#MATRIX">MATRIX</a>
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<a href="global.html#mixin">mixin</a>
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<a href="global.html#NONE">NONE</a>
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<a href="global.html#off">off</a>
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<a href="global.html#on">on</a>
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<a href="global.html#once">once</a>
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<li class="class-depth-0">
<a href="global.html#PENDING_ATLAS">PENDING_ATLAS</a>
</li>
<li class="class-depth-2">
<a href="global.html#Phaser.Path#numPointsreturn%257Bnumber%257DThetotalnumberofPathPointsinthisPath.">Phaser.Path#numPoints
return {number} The total number of PathPoints in this Path.</a>
</li>
<li class="class-depth-0">
<a href="global.html#POINT">POINT</a>
</li>
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<a href="global.html#POINTER">POINTER</a>
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<a href="global.html#POLYGON">POLYGON</a>
</li>
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<a href="global.html#PORTRAIT">PORTRAIT</a>
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<li class="class-depth-0">
<a href="global.html#RECTANGLE">RECTANGLE</a>
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<li class="class-depth-0">
<a href="global.html#removeAllListeners">removeAllListeners</a>
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<a href="global.html#RENDERTEXTURE">RENDERTEXTURE</a>
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<a href="global.html#RETROFONT">RETROFONT</a>
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<a href="global.html#RIGHT">RIGHT</a>
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<a href="global.html#RIGHT_BOTTOM">RIGHT_BOTTOM</a>
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<a href="global.html#RIGHT_CENTER">RIGHT_CENTER</a>
</li>
<li class="class-depth-0">
<a href="global.html#RIGHT_TOP">RIGHT_TOP</a>
</li>
<li class="class-depth-0">
<a href="global.html#ROPE">ROPE</a>
</li>
<li class="class-depth-0">
<a href="global.html#ROUNDEDRECTANGLE">ROUNDEDRECTANGLE</a>
</li>
<li class="class-depth-0">
<a href="global.html#scaleModes">scaleModes</a>
</li>
<li class="class-depth-0">
<a href="global.html#SPRITE">SPRITE</a>
</li>
<li class="class-depth-0">
<a href="global.html#SPRITEBATCH">SPRITEBATCH</a>
</li>
<li class="class-depth-0">
<a href="global.html#stopImmediatePropagation">stopImmediatePropagation</a>
</li>
<li class="class-depth-0">
<a href="global.html#stopPropagation">stopPropagation</a>
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<a href="global.html#TEXT">TEXT</a>
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<a href="global.html#TILEMAP">TILEMAP</a>
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<a href="global.html#TILEMAPLAYER">TILEMAPLAYER</a>
</li>
<li class="class-depth-0">
<a href="global.html#TILESPRITE">TILESPRITE</a>
</li>
<li class="class-depth-0">
<a href="global.html#TOP_CENTER">TOP_CENTER</a>
</li>
<li class="class-depth-0">
<a href="global.html#TOP_LEFT">TOP_LEFT</a>
</li>
<li class="class-depth-0">
<a href="global.html#TOP_RIGHT">TOP_RIGHT</a>
</li>
<li class="class-depth-0">
<a href="global.html#UP">UP</a>
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<a href="global.html#VERSION">VERSION</a>
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<a href="global.html#VERTICAL">VERTICAL</a>
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<a href="global.html#VIDEO">VIDEO</a>
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<a href="global.html#WEBGL">WEBGL</a>
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<a href="global.html#WEBGL_FILTER">WEBGL_FILTER</a>
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<div id="main">
<h1 class="page-title">Source: src/utils/DOM.js</h1>
<section>
<article>
<pre class="sunlight-highlight-javascript linenums">/**
* @author Richard Davey <rich@photonstorm.com>
* @copyright 2016 Photon Storm Ltd.
* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/
/**
* DOM utility class.
*
* Provides a useful Window and Element functions as well as cross-browser compatibility buffer.
*
* Some code originally derived from {@link https://github.com/ryanve/verge verge}.
* Some parts were inspired by the research of Ryan Van Etten, released under MIT License 2013.
*
* @class Phaser.DOM
* @static
*/
Phaser.DOM = {
/**
* 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.
*
* @method Phaser.DOM.getOffset
* @param {DOMElement} element - The targeted element that we want to retrieve the offset.
* @param {Phaser.Point} [point] - The point we want to take the x/y values of the offset.
* @return {Phaser.Point} - A point objet with the offsetX and Y as its properties.
*/
getOffset: function (element, point) {
point = point || new Phaser.Point();
var box = element.getBoundingClientRect();
var scrollTop = Phaser.DOM.scrollY;
var scrollLeft = Phaser.DOM.scrollX;
var clientTop = document.documentElement.clientTop;
var clientLeft = document.documentElement.clientLeft;
point.x = box.left + scrollLeft - clientLeft;
point.y = box.top + scrollTop - clientTop;
return point;
},
/**
* 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.
*
* @method Phaser.DOM.getBounds
* @param {DOMElement|Object} element - The element or stack (uses first item) to get the bounds for.
* @param {number} [cushion] - A +/- pixel adjustment amount.
* @return {Object|boolean} A plain object containing the properties `top/bottom/left/right/width/height` or `false` if a non-valid element is given.
*/
getBounds: function (element, cushion) {
if (cushion === undefined) { cushion = 0; }
element = element && !element.nodeType ? element[0] : element;
if (!element || element.nodeType !== 1)
{
return false;
}
else
{
return this.calibrate(element.getBoundingClientRect(), cushion);
}
},
/**
* Calibrates element coordinates for `inLayoutViewport` checks.
*
* @method Phaser.DOM.calibrate
* @private
* @param {object} coords - An object containing the following properties: `{top: number, right: number, bottom: number, left: number}`
* @param {number} [cushion] - A value to adjust the coordinates by.
* @return {object} The calibrated element coordinates
*/
calibrate: function (coords, cushion) {
cushion = +cushion || 0;
var output = { width: 0, height: 0, left: 0, right: 0, top: 0, bottom: 0 };
output.width = (output.right = coords.right + cushion) - (output.left = coords.left - cushion);
output.height = (output.bottom = coords.bottom + cushion) - (output.top = coords.top - cushion);
return output;
},
/**
* Get the Visual viewport aspect ratio (or the aspect ratio of an object or element)
*
* @method Phaser.DOM.getAspectRatio
* @param {(DOMElement|Object)} [object=(visualViewport)] - The object to determine the aspect ratio for. Must have public `width` and `height` properties or methods.
* @return {number} The aspect ratio.
*/
getAspectRatio: function (object) {
object = null == object ? this.visualBounds : 1 === object.nodeType ? this.getBounds(object) : object;
var w = object['width'];
var h = object['height'];
if (typeof w === 'function')
{
w = w.call(object);
}
if (typeof h === 'function')
{
h = h.call(object);
}
return w / h;
},
/**
* Tests if the given DOM element is within the Layout viewport.
*
* The optional cushion parameter allows you to specify a distance.
*
* inLayoutViewport(element, 100) is `true` if the element is in the viewport or 100px near it.
* inLayoutViewport(element, -100) is `true` if the element is in the viewport or at least 100px near it.
*
* @method Phaser.DOM.inLayoutViewport
* @param {DOMElement|Object} element - The DOM element to check. If no element is given it defaults to the Phaser game canvas.
* @param {number} [cushion] - The cushion allows you to specify a distance within which the element must be within the viewport.
* @return {boolean} True if the element is within the viewport, or within `cushion` distance from it.
*/
inLayoutViewport: function (element, cushion) {
var r = this.getBounds(element, cushion);
return !!r && r.bottom >= 0 && r.right >= 0 && r.top <= this.layoutBounds.width && r.left <= this.layoutBounds.height;
},
/**
* 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
*
* @method Phaser.DOM.getScreenOrientation
* @protected
* @param {string} [primaryFallback=(none)] - Specify 'screen', 'viewport', or 'window.orientation'.
*/
getScreenOrientation: function (primaryFallback) {
var screen = window.screen;
var orientation = screen.orientation || screen.mozOrientation || screen.msOrientation;
if (orientation && typeof orientation.type === 'string')
{
// Screen Orientation API specification
return orientation.type;
}
else if (typeof orientation === 'string')
{
// moz/ms-orientation are strings
return orientation;
}
var PORTRAIT = 'portrait-primary';
var LANDSCAPE = 'landscape-primary';
if (primaryFallback === 'screen')
{
return (screen.height > screen.width) ? PORTRAIT : LANDSCAPE;
}
else if (primaryFallback === 'viewport')
{
return (this.visualBounds.height > this.visualBounds.width) ? PORTRAIT : LANDSCAPE;
}
else if (primaryFallback === 'window.orientation' && typeof window.orientation === 'number')
{
// This may change by device based on "natural" orientation.
return (window.orientation === 0 || window.orientation === 180) ? PORTRAIT : LANDSCAPE;
}
else if (window.matchMedia)
{
if (window.matchMedia("(orientation: portrait)").matches)
{
return PORTRAIT;
}
else if (window.matchMedia("(orientation: landscape)").matches)
{
return LANDSCAPE;
}
}
return (this.visualBounds.height > this.visualBounds.width) ? PORTRAIT : LANDSCAPE;
},
/**
* The bounds of the Visual viewport, as discussed in
* {@link http://www.quirksmode.org/mobile/viewports.html A tale of two viewports — part one}
* 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.
*
* @type {Phaser.Rectangle}
* @property {number} x - Scroll, left offset - eg. "scrollX"
* @property {number} y - Scroll, top offset - eg. "scrollY"
* @property {number} width - Viewport width in pixels.
* @property {number} height - Viewport height in pixels.
* @readonly
*/
visualBounds: new Phaser.Rectangle(),
/**
* The bounds of the Layout viewport, as discussed in
* {@link http://www.quirksmode.org/mobile/viewports2.html A tale of two viewports — part two};
* 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
* {@link http://www.matanich.com/2013/01/07/viewport-size/ What size is my viewport?}).
*
* 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.
*
* @type {Phaser.Rectangle}
* @property {number} width - Viewport width in pixels.