Class s7sdk.set.SpinView
The SpinView
is an image viewing component that displays a spin set served by
Adobe Scene7 Image Serving. You can create the illusion of a rotating object by displaying
images taken from different angles that make up a spin set. You can spin around the view by either calling moveFrame()
API
from JavaScript or by dragging the image when current frame is fully zoomed out, otherwise drag will pan the zoomed in image.
You can also zoom into the currently displayed frame by either double-clicking/tapping on it
or by calling zoomIn()
API from JavaScript. You can adjust which user action is associated
with a zooming action through the use of doubleclick
and singleclick
modifiers. On the devices that
support pinch gestures, pinching in and out zooms in and out the current frame. If the image is zoomed in, a dragging
gesture pans the image. If the image is fully zoomed out, a dragging gesture results in frame change, resulting in a spinning of the view.
The auto-spin feature can be turned on using autospin
modifier. It is possible to control auto spin speed,
number of rotations and direction. In order to achieve the best auto spin experience it is recommended to preload all frames by
setting maxloadradius
to -1
; note however that this will result in increased load time and higher
bandwidth usage.
The SpinView component supports two dimensional Spin Sets including sets with incomplete rows. The SpinView component handles incomplete sets by centering each row of frames.
The spin set to be displayed by the component can be set by either using the setMediaSet()
API or using the asset
modifier directly. However if you are specifying inline sets as a list of asset IDs/names then
you must use the MediaSet
component and setMediaSet()
API. Each inline set should include a comma separated list
of assets (in the form company/asset). If it is a
2d Spin Set, each row should be enclosed in curly braces and also separated by commas.
For instance, a 3 item spin set could be specified like:
demo/p01,demo/p02,demo/p03
A 2D SpinSet with 2 rows and 2 columns would be specified similarly:
{demo/p01,demo/p02},{demo/p03,demo/p04}
If you are using the SpinView
directly, the set passed to the asset
modifier must be fully defined in the Scene7 Publishing System and identifiable by the catalog/set id.
Customizing Behavior Using Modifiers
Modifiers change the SpinView
default behavior. They are passed to the component by the ParameterManager
instance
specified in the constructor.
The following modifiers are supported:
Modifier | Syntax | Description | Default |
serverurl | isRootPath | The Image Serving root path. If no domain is specified, the domain from which the page is served is applied instead. Standard URI path resolution applies. | /is/image/ |
asset | spinSet | The Image Serving catalog or asset ID of a named spin set whose definition comes from the server by means of the req=set command. | |
iscommand | value | Image Serving command string that is applied to all images in the set. If specified in the URL, all occurrences of '&' and '=' must be HTTP-encoded as %26 and %3D , respectively. | |
zoomstep | step[,limit] | Configures how many zoom-in and zoom-out actions are required to increase or decrease the resolution by a factor of two. The resolution change for each zoom action is 2^1/step. Set to 0 to zoom to full resolution with a single zoom action. Set limit to specify the maximum zoom resolution, relative to the full resolution image. The default of 1.0 does not allow zooming beyond full resolution. | 1.0, 1.0 |
transition | [time][,easing] | Time specifies the time in seconds that the animation takes for a single zoom step action. Use easing to create an illusion of acceleration or deceleration which makes the transition appear more natural. You can set easing to one of the following: 0 (auto), 1 (linear), 2 (quadratic), 3 (cubic), 4 (quartic), 5 (quintic). Auto mode always uses linear transition when elastic zoom is disabled (default). Otherwise, it fits one of the other easing functions based on the transition time. That is, the shorter the transition time, the higher the easing function is used to quicken the acceleration or deceleration effect. | 0.5,0 |
singleclick | none|zoom|reset|zoomReset | Configures the mapping of single-click or tap-to-zoom actions. Set to none to disable single-click or tap zoom. If it is set to zoom , clicking the image zooms in one zoom step; CTRL+clicking zooms out one zoom step. Set reset to cause a single click of the image to reset the zoom to the initial zoom level. For zoomReset , reset is applied if the current zoom factor is at or beyond the specified limit. Otherwise, zoom is applied. | none |
doubleclick | none|zoom|reset|zoomReset | Configures the mapping of double-click or tap-to-zoom actions. Set to none disables double-click or tap zoom. If it is set to zoom then clicking the image zooms in one zoom step; CTRL+clicking zooms out one zoom step. Set reset causes a single click of the image to reset the zoom to the initial zoom level. For zoomReset , reset is applied if the current zoom factor is at or beyond the specified limit. Otherwise, zoom is applied. | zoomReset |
maxloadradius | value[,highRes] | Represents the maximum number of frames to preload in each direction when the SpinView is idle. A value of -1 preloads all frames in the set. The preloaded frames are always in the original resolution at which the SpinView was initially loaded. | 6,0 |
autospin | 0|1[,duration][,direction][,spin_number] | Enables or disables the automatic spin animation. duration is the number of seconds per one full spin. direction is the spin direction which is 0 for spinning east and 1 for spinning west. spin_number is the number of full rotations done before autospin stops. The number is a floating point number. Set to -1 for an infinitive auto spin. | 0,1,1,1 |
iconeffect | 0|1[,count][,fade][,autoHide] | Enables the IconEffect to display above the first image in the spin set when the image is in a reset state. Such functionality suggests to the user to drag the image to spin it. Set count to specify the maximum number of times the icon overlay appears and reappears. A value of -1 indicates that the overlay reappears indefinitely. Set fade to specify the duration in seconds of show and hide animation. Set autoHide to specify the number of seconds that the IconEffect stays fully visible before it auto-hides. That is, the time after fade in animation is completed and before fade out animation starts). A value of 0 disables the auto-hide behavior. | 1,1,0.3,3 |
enableHD | always|never|limit,number | Enable, limit, or disable optimization for devices where devicePixelRatio is greater than 1 such as devices with high-density display like iPhone4 and similar devices. If active, the component limits the size of the IS image request as if the device only had a pixel ratio of 1, thereby reducing the bandwidth. If you use the limit setting, the component enables high pixel density only up to the specified limit. | limit,1500 |
lockdirection | 0|1 | Specifies whether to alow a change in spin direction in case of 2d spin set. When set to 1 the component will identify the primary drag or swipe direction (horizontal vs vertical) in the beginning of the gesture and after that will keep that direction until the gesture ends. In this case if the user starts horizontal spin and then decides to continue their drag gesture in a vertical direction the component will not perform vertical spin, and will still consider only horizontal part of mouse movement or swipe. A value of 0 allows user to change spin direction at any point of time during the gesture progress. The setting has not affect if the spin set is 1D. | 0 |
sensitivity | xSensitivity[,ySensitivity] | Controls sensitivity of the horizontal and vertical spin performed with mouse drag or swipe. xSensitivity sets how many full horizontal product rotations will be made if user drags their mouse horizontally from one side of the view to another; for example, 3 would mean that user would see 3 complete spins for one full drag gesture. Similarily, ySensitivity controls sensitivity of the vertical spin; the value of 1 means that one full vertical drag or swipe changes the view angle from the top-most spin plane to the bottom-most (or vice verse). Setting negative value for ySensitivity reverses the direction of vertical spin. | 5,2 |
fmt | jpg|jpeg|png|png-alpha|gif|gif-alpha | Specifies the image format that the component uses to load images from Image Server. If the specified format ends with "-alpha", the component renders images as transparent. For all other image formats, the component treats images as opaque. Note that the component has a white background by default. Therefore, to make it completely transparent, set the background-color CSS property to transparent | jpeg |
Defining the Appearance using CSS
You can define the appearance of the SpinView
component using CSS rules. All HTML5 Viewer SDK components use class selectors for styling. You can define the appearance of the SpinView
component using the .s7spinview
class selector. The styles associated with this class selector are applied to all instances of the SpinView
component. You can style particular
instances by prefixing the class rule with the instance #id. For example, styling rules for #myComp.s7spinview
are applied only to the particular SpinView
instance.
The styling of the sub-elements using class selectors like .s7iconeffect
for example, must be specified in the form of the descendant class selectors, that is,
they must follow the main class selector separated by a space, such as .s7spinview .s7iconeffect
.
For more information on component styling see the HTML5 Viewer SDK User Guide and the default styles section.
CSS Class | Attribute Selector | Description |
.s7spinview | (None) | Represents the main body of the SpinView component. |
.s7iconeffect | state=[spin_1D|spin_2D] | Defines the appearance of the IconEffect. If the component works with two-dimensional spin, it applies state=spin_2D selector; otherwise state=spin_1D is used. |
Constructor Attributes | Constructor Name and Description |
---|---|
s7sdk.set.SpinView(container, settings, compId)
|
Method Attributes | Method Name and Description |
---|---|
addEventListener(type, handler, useCapture)
Adds an event listener to the instance of the
SpinView component. |
|
dispose()
Dispose is used to remove itself and all sub-elements from the DOM
|
|
Returns a
SpinCapabilityState object that can be used to determine the
current state of the SpinView component. |
|
Gets the currently displayed frame.
|
|
Retrieves the total number of frames.
|
|
Returns the current inner height of the component.
|
|
getWidth()
Returns the current inner width of the component.
|
|
The current zoom scale percentage, where 0 corresponds to the reset state and 100 to the top image resolution or the set limit.
|
|
imagePixelsToViewPoint(inPt)
Converts a point from the top resolution image coordinates to view coordinates.
|
|
moveFrame(direction)
Move the current frame to an adjacent frame.
|
|
resize(w, h)
Sets SpinView to the specified width and height.
|
|
setAsset(asset)
Changes the currently displayed set.
|
|
setCSS(classname, property, value)
Sets a particular CSS class and property on a component
|
|
setCurrentFrameIndex(val)
Changes the currently displayed frame.
|
|
setMediaSet(mediaSet)
Sets the spin set as parsed by the
MediaSet component. |
|
setModifier(modObj)
Sets 1-N # of modifiers for the component.
|
|
zoomIn()
Zoom in one level.
|
|
zoomNPan(dx, dy)
Move the displayed portion of the zoomed in image by a specified amount.
|
|
zoomNRgn(rgn)
Display the specified image region in the view area and adjust the zoom level accordingly.
|
|
zoomOut()
Zoom in by one step.
|
|
Reset the view to its initial zoom state.
|
|
zoomRgn(rgn)
Display the specified image region in the view area and adjust the zoom level accordingly.
|
Example Code
This example demonstrates how to use the SpinView component in a simple viewer. In this example a Container object,
a SpinView object, and two pan button objects are created. Every time a user clicks on a pan button, the moveFrame()
method is called on the SpinView object to simulate spinning the image in the given direction. Notice that the pan
buttons have been repurposed for use as rotate buttons in this example, and the buttons' default tooltip text has
been changed to reflect their functionality.
The code below does the following:
- The Scene7 HTML5 SDK is linked to the page and the required s7sdk components are included in the document head.
- CSS Styles are defined in the document head to control the appearance of the SpinView and button components.
- The s7sdk.Util.init() method is called to initialize the SDK.
- A ParameterManager object is created to handle component modifiers for the viewer.
- An initViewer() function is defined. This function initializes a couple of modifiers (hard coded for example purposes),
and sets new strings to be displayed as tooltips by the button components when a user interacts with them. It then
creates the component objects required for this simple example. The initViewer() function also adds event listeners
that designate functions to handle relevant component events (which might be dispatched by the components as a result of
user interactions, changes in a component's state, etc.).
- Handler functions are defined to respond to the component event listeners added in the initViewer() function.
- An event listener is added to the ParameterManager object that designates the initViewer() function as the handler
to call when the Scene7 SDK is loaded and ready.
- Finally, the init() method is called on the ParameterManager object to start the viewer.
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport"
content="user-scalable=no,height=device-height,width=device-width,initial-scale=1.0,maximum-scale=1.0"/>
<title>SpinView Example</title>
<!--
To run this example locally you need to replace this with an absolute SDK path.
For more information check the HTML5 Viewers SDK User Guide or the examples
included in the package.
-->
<script language="javascript" type="text/javascript"
src="../js/s7sdk/utils/Utils.js"></script>
<script language="javascript" type="text/javascript">
s7sdk.Util.lib.include('s7sdk.common.Button');
s7sdk.Util.lib.include('s7sdk.common.Container');
s7sdk.Util.lib.include('s7sdk.set.SpinView');
</script>
<style type="text/css" media="screen">
.s7spinview {
height: 300px;
width: 300px;
}
.s7panleftbutton {
position: absolute;
top: 137px;
left: 0px;
}
.s7panrightbutton {
position: absolute;
top: 137px;
left: 287px;
}
</style>
</head>
<body style="margin: 0 0;overflow:hidden;">
<script language="JavaScript" type="text/javascript">
var params, container, spinView, panRightButton, panLeftButton;
// Initialize the SDK
s7sdk.Util.init();
// Create ParameterManager instance to handles modifiers
params = new s7sdk.ParameterManager();
// Assign new localized values for SYMBOLS defined by the
// PanLeftButton and PanRightButton components.
params.setLocalizedTexts({
"en":{
"PanRightButton.TOOLTIP":"Spin East",
"PanLeftButton.TOOLTIP":"Spin West"
},
defaultLocale: "en"
});
// Define the function that initializes the viewer
function initViewer(){
// Set hardcoded modifiers (not required when values are specified on the url)
params.push("serverurl", "http://s7d1.scene7.com/is/image");
params.push("asset", "sample/spinner");
// Create the Container component object
container = new s7sdk.Container(null, params, "s7container");
// Note: Any component supporting the setMediaSet API can be driven
// by the MediaSet component.
// Create the SpinView component object
spinView = new s7sdk.set.SpinView(container, params, "spinView");
// Create the PanRightButton component object
panRightButton = new s7sdk.common.PanRightButton(container, params, "panRightButton");
// Create the PanLeftButton component object
panLeftButton = new s7sdk.common.PanLeftButton(container, params, "panLeftButton");
// Add event listeners for pan button click events
panLeftButton.addEventListener("click", onPanLeft, true);
panRightButton.addEventListener("click", onPanRight, true);
}
// Define an event handler function to rotate the SpinView left (West)
function onPanLeft(event){
spinView.moveFrame(s7sdk.Enum.SPIN_DIRECTION.WEST);
}
// Define an event handler function to rotate the SpinView right (East)
function onPanRight(event){
spinView.moveFrame(s7sdk.Enum.SPIN_DIRECTION.EAST);
}
// The ParameterManager will dispatch SDK_READY when all modifiers have been processed
// and it is safe to initialize the viewer
params.addEventListener(s7sdk.Event.SDK_READY, initViewer, false);
// Now it is safe to process the modifiers, the callbacks have been defined
// this will trigger the SDK_READY event
params.init();
</script>
</body>
</html>
Default styles for SpinView:
.s7spinview {
background-color:#ffffff;
position:absolute;
width:400px;
height:400px;
user-select:none;
-moz-user-select:-moz-none;
-webkit-user-select:none;
-webkit-tap-highlight-color:rgba(0,0,0,0);
opacity:1;
text-align:left;
}
.s7spinview img {
max-width:none;
max-height:none;
}
.s7spinview .s7iconeffect {
width:120px;
height:120px;
-webkit-transform:translateZ(0px);
background-repeat:no-repeat;
background-position:center;
}
.s7spinview .s7iconeffect[state='spin_1D'] {
background-image:url(images/sdk/spinicon.png);
}
.s7spinview .s7iconeffect[state='spin_2D'] {
background-image:url(images/sdk/spinicon_2D.png);
}
- Parameters:
- {String|Container} container
- The reference to
Container
instance or the ID of the parent DOM element to which the component is added as a child - {s7sdk.ParameterManager} settings
- A parameter manager instance that represents the desired configuration.
- {String} compId
- An optional parameter that specifies the ID of the components DOM element
SpinView
component. The handler function
receives a DOM event object of type Event
. The object contains a property s7event
,
which references the associated custom event object, for example s7sdk.event.CapabilityStateEvent
.
The events supported by the component are:
s7sdk.event.ResizeEvent.COMPONENT_RESIZE
- Dispatched when the component has been resized. s7sdk.event.ResizeEvent s7sdk.event.CapabilityStateEvent.NOTF_SPIN_CAPABILITY_STATE
- Dispatched when the spin, pan, or zoom capabilities have changed. See s7sdk.SpinCapabilityState s7sdk.event.AssetEvent.ASSET_CHANGED
- Dispatched when the spin asset has changed. s7sdk.event.AssetEvents7sdk.event.StatusEvent.NOTF_ASSET_METADATA_READY
- Dispatched when component receives asset metadata. If the component is initialized with setMediaSet()
it dispatches instantly inside that API call. Otherwise if the component loads req=set on its own, this event is sent when component has received and parsed req=set. s7sdk.event.StatusEvents7sdk.event.StatusEvent.NOTF_VIEW_READY
- Dispatched when component fills the view entirely with image data (either low-resolution tile or high-resolution overview image loads and displays - whatever comes first). It is sent only after asset swap and not during zoom, pan or spin operations. s7sdk.event.StatusEvents7sdk.event.StatusEvent.NOTF_HIGHRES_VIEW_READY
- Dispatched when component fills the view with high resolution image. The event is sent only once per asset swap, when the view is filled with high resolution image data for the first time after asset was set or changed. This event is not sent later, when user zooms, pans or spins. s7sdk.event.StatusEvents7sdk.event.StatusEvent.NOTF_PRELOAD_START
- Dispatched when the component begins to preload new content according to maxloadradius
modifier. The event is sent multiple times during component's life cycle as user actions may trigger new preloading step. s7sdk.event.StatusEvents7sdk.event.StatusEvent.NOTF_PRELOAD_COMPLETE
- Dispatched when all the content according to maxloadradius
modifier is downloaded. The event is sent multiple times during component's life cycle as user actions may trigger new preloading step. s7sdk.event.StatusEvent- Parameters:
- {String} type
- Event name, for example
s7sdk.event.CapabilityStateEvent.NOTF_ZOOM_CAPABILITY_STATE
. - {Function} handler
- Function to be called when the event gets dispatched.
- {Boolean} useCapture
- Register capture phase.
SpinCapabilityState
object that can be used to determine the
current state of the SpinView
component. For example, if the component can
zoom in, then the ZOOM_IN
capability flag will be set. This means that the
current frame is not fully zoomed in.
- Returns:
- {s7sdk.SpinCapabilityState} The current capabilities of the
SpinView
instance.
- Returns:
- int Current 0-based index of the displayed frame.
- Returns:
- {int} Total number of frames in the spin set.
- Returns:
- {Number} the inner height of the component, in pixels.
- Returns:
- {Number} the inner width of the component, in pixels.
- Returns:
- {Number} Percentage zoom level.
- Parameters:
- {Point2D} inPt
- Point in top resolution image coordinates.
- See:
- s7sdk.Point2D
s7sdk.Enum.SPIN_DIRECTION.NORTH_EAST
for the direction
parameter
will move the frame up one row and to the right one row. Incomplete rows in the spin set
are centered, so when traversing up and down the frame selected will be centered. The north
and south (up and down) movement is locked at the top and bottom positions. The east and west
(or left and right) motion wraps around from side to side.
- Parameters:
- {s7sdk.Enum.SPIN_DIRECTION} direction
- Direction to move to.
- Parameters:
- {Number} w
- The width of the component, in pixels.
- {Number} h
- The height of the component, in pixels.
SWAP
tracking event that is managed by the TrackingManager
component.
- Parameters:
- {String} asset
- - The catalog ID of the spin set.
- Parameters:
- {String} classname
- The CSS classname to use for this style. i.e. .s7spinview
- {String} property
- The CSS property that is being set. i.e. background-color
- {String} value
- The CSS property value being set. i.e. #FF0000
- Parameters:
- val
- The 0-based index of the frame to switch to.
MediaSet
component. This
re-sets the component to use the new spin set content. Anything that is
previously set through the asset
modifier is ignored.
This method is more efficient way of setting the set for the component to display compared to the setAsset()
API
which is assuming a stand-alone mode of operation and is sending a separate image serving request to retrieve the set definition.
In addition, this is the only way to use inline spin sets with this component.
- Parameters:
- mediaSet
- {s7sdk.MediaSetDesc} Set from which to extract the frames.
- Parameters:
- {Object} modObj
- A simple JSON object with name:value pairs of valid modifiers for a particular component
- Parameters:
- {Object} dx
- If dx is greater than 0 the image is moved to the right; if dx is less than 0 the image is moved to the left.
- {Object} dy
- If dy is greater than 0 the image is moved down; if dy less than 0 the image is moved up.
SpinView
viewing area the best way possible without
distorting the image. That is, the specified region will be modified if necessary
in order to preserve the image aspect ratio.
- Parameters:
- {Rectangle} rgn
- The image region in normalized image coordinates where 0,0 represents the top left corner and 1,1 represents the bottom right corner of the image.
SpinView
viewing area the best way possible without
distorting the image. That is, the specified region will be modified if necessary
in order to preserve the image aspect ratio.
- Parameters:
- {Rectangle} rgn
- Image region to zoom into in image top resolution coordinates.