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ImageViewer Class Members

Summary

The following tables list the members exposed by ImageViewer.

Public Constructors

Name Description
ImageViewer Initializes a new ImageViewer

Public Methods

Name Description
activeItemChanged.remove Occurs when the value of ActiveItem changes.
autoItemElementsAdded.remove Occurs after an item HTML elements are re-added to the DOM.
autoItemElementsRemoved.remove Occurs before an item HTML elements are re-deleted from the DOM.
beginAutoSizeChanged Disable detecting if the viewer size has changed.
beginRender Stops the viewer from rendering the content if any change is applied. This is useful to increase the control's speed efficiency.
beginTransform Stops the viewer from updating the transformations matrices and updating the view layout. This is useful to increase the control's speed efficiency.
beginUpdate Stops the viewer from updating the transformations matrices, view layout and rendering the content if any change is applied. This is useful to increase the control's speed efficiency.
centerAtPoint Centers the view display at the specified point.
combineFloater Combines the floaters with the images for all items inside this ImageViewer
convertBoundsToView Converts a rectangle value from logical (excluding the current transformation) to physical (in control pixel coordinates).
convertPoint Converts a LeadPointD from one coordinates to the other.
convertPoints Converts an array of LeadPointD from one coordinates to the other.
convertRect Converts a LeadRectD from one coordinates to the other.
convertTransform Converts a transformation matrix relative to one item to another.
disableSync Temporarily disable syncing for a group while keeping the group itself intact.
disableTransitions Stops the viewer from updating the transformations matrices and view layout during CSS transitions.
dispose Destroys this ImageViewer and removes it from the page.
elementsUpdated.remove Occurs anytime the viewer changes any DOM or CSS property on an element that is part of view or any item
enableSync Re-enable syncing for a group.
enableTransitions Enable updating the transformations matrices and view layout during CSS transitions.
endAutoSizeChanged Enables detecting if the viewer size has changed.
endRender Instruct the viewer that updates are completed and rendering of content can be resumed.
endTransform Instruct the viewer that updates are completed and updating transformations and view layout can be resumed.
endUpdate Instruct the viewer that updates are completed and updating the transformations matrices, view layout and rendering of content can be resumed.
ensureBoundsVisible Ensures that the specified rectangle area is visible in the viewer.
ensureItemVisible Ensures that an item is visible in the viewer.
ensureItemVisibleByIndex Ensures that the item at the specified index is visible in the viewer.
eraseBackground.remove Occurs when the control's background needs to be erased.
findNearestItem Gets the item nearest to the specified physical (in viewer pixel) coordinates.
foreCanvasSizeChanged.remove Occurs when the size of the foreground canvas changes.
getAllVisibleItems Gets all the visible items in the viewer.
getDestinationRectangle Utility method to adjust the given LeadRectD based on source size, size mode and alignment
getFirstVisibleItem First visible item or part of it in the viewer.
getFirstVisibleItemIndex Index for the first visible item or part of it in the viewer.
getImageTransformWithDpi Transformation matrix of the image with or without DPI scaling (single item mode).
getItemBounds Current logical (excluding the current transformation) bounds of any part of an item.
getItemContentTransform Transformation matrix of the content of an item.
getItemFloaterSize Floater image size of an item.
getItemFloaterTransform Transformation matrix of the floater of an item.
getItemImageFloatingPointTransform Transformation matrix of the image of an item without rounded values.
getItemImageSize Image size of an item.
getItemImageTransform Transformation matrix of the image of an item.
getItemImageTransformScaleOnly Transformation matrix of the image of an item without translation and rotation.
getItemImageTransformWithDpi Transformation matrix of the image of an item with or without DPI scaling.
getItemTransform Transformation matrix of the whole item.
getItemViewBounds Current physical (in control pixel coordinates) bounds of any part of an item.
getLargestVisibleItem Largest visible item or part of it in the viewer.
getLargestVisibleItemIndex Index for the largest visible item or part of it in the viewer.
getLastVisibleItem Last visible item or part of it in the viewer.
getLastVisibleItemIndex Index for the last visible item or part of it in the viewer.
getScaleFactors Utility method to calculate the scale factor needed to perform the specified size mode using a source and destination size.
getSynced Returns a list of all ImageViewer instances that match the given sync.
getViewBounds Current bounds of the view in physical (in control pixel) coordinates
gotoItem Scroll to the top-left of an item.
gotoItemByIndex Scroll to the top-left of an item giving its index.
hitTestFloater First item that has its floater under a physical (in viewer pixel) coordinates.
hitTestItem First item that is under a physical (in viewer pixel) coordinates.
hitTestItemPart Specific part of the item under a physical (in viewer pixel) coordinates.
hitTestItems Items that intersect with a rectangle in physical (in viewer pixel) coordinates.
imageLoading.remove Occurs just before an image starts loading as the result of a URL update.
interpolation.remove Occurs when the interpolator state changes.
invalidate Invalidates a portion of the entire surface of the control and causes the control to be redrawn.
invalidateItem Invalidate an item.
invalidateItemByIndex Invalidate the item at the specified index.
isItemVisible Gets a value that indicate whether the specified item or part is currently visible in the viewer.
isSyncDisabled Determines if syncing for a group has been disabled.
itemChanged.remove Occurs when any of the items inside this ImageViewer changes
itemDragDrop.remove Occurs when data is being dragged or dropped from/to this ImageViewer.
itemError.remove Occurs when an error happens when the viewer tries to update the item image data.
onActiveItemChanged Raises the ActiveItemChanged event.
onAutoItemElementsAdded Raises the AutoItemElementsAdded event.
onAutoItemElementsRemoved Raises the AutoItemElementsRemoved event.
onElementsUpdated Raises the ElementsUpdated event.
onEraseBackground Raises the EraseBackground event.
onForeCanvasSizeChanged Raises the ForeCanvasSizeChanged event.
onItemChanged Raises the ItemChanged event.
onItemDragDrop Raises the ItemDragDrop event.
onItemError Raises the ItemError event.
onPostRender Raises the PostRender event.
onPostRenderItem Raises the PostRenderItem event.
onPreRender Raises the PreRender event.
onPreRenderItem Raises the PreRenderItem event.
onPropertyChanged Raises the PropertyChanged event.
onRedirectRender Raises the RedirectRender event.
onRender Raises the Render event.
onRenderBackground Raises the RenderBackground event.
onRenderBorder Raises the RenderBorder event.
onRenderError Raises the RenderError event.
onRenderImage Raises the RenderImage event.
onRenderItem Raises the RenderItem event.
onRenderItemFloater Raises the RenderItemFloater event.
onRenderItemFloaterRegion Raises the RenderItemFloaterRegion event.
onRenderItemRegion Raises the RenderItemRegion event.
onRenderShadow Raises the RenderShadow event.
onRenderText Raises the RenderText event.
onScrollOffsetChanged Raises the ScrollOffsetChanged event.
onSelectedItemsChanged Raises the SelectedItemsChanged event.
onSizeChanged Inform the control that the size of the container has changed.
onTransformChanged Raises the OnTransformChanged event.
postRender.remove Occurs after the view is rendered.
postRenderItem.remove Occurs after an item is rendered.
preRender.remove Occurs before the view is rendered.
preRenderItem.remove Occurs before an item is rendered.
processDragDropUrl Processes the image dropped on this ImageViewer during a drag/drop operation.
propertyChanged.remove Occurs when a property value in this ImageViewerchanges.
redirectRender.remove Occurs when the viewer content has changed and any external controls performing live capture need to be updated.
render.remove Render the view.
renderBackground.remove Renders view or item background.
renderBorder.remove Renders view or item border.
renderError.remove Occurs when an error happens during rendering.
renderImage.remove Renders the item image.
renderItem.remove Occurs when an item is rendered.
renderItemFloater.remove Renders the item floater.
renderItemFloaterRegion.remove Renders the item floater region.
renderItemRegion.remove Renders the item region.
renderRedirect Render the content of the viewer to an external context.
renderShadow.remove Renders view or item or drop shadow.
renderText.remove Renders the item text.
reset Resets the display properties to their default values (single item mode).
restrictScrollOffset Ensures a scroll position is inside the minimum and maximum scroll value currently allowed.
scrollBy Scrolls the viewer by the specified amount in pixels.
scrollByRestrict Scrolls the viewer by the specified amount in pixels while always restricting the value to the current minimum and maximum allowed.
scrollOffsetChanged.remove Occurs when the value of ScrollOffset changes.
selectedItemsChanged.remove Occurs when any of the items inside this viewer selection state changes.
setItemFloater Sets the floater for an item.
sync Establishes sync groups.
transformChanged.remove Occurs when the transformation matrix of the view or any of the item changes.
translateItemScaleFactor Translates an item horizontally or vertically a given amount of pixels regardless of the current zoom value.
unsync Removes a single viewer from the sync group.
unsyncGroup Un-syncs all members of the sync group of the given sync ID.
updateStyles Inform the viewer that the CSS classes used has been changed.
updateTransform Re-calculates the transformation matrices and update the view layout.
zoom Zooms or changes the size mode of the view.
zoomToRect Zooms the view to the specified rectangle.

Public Properties

Name Description
activeItem Active item of this image viewer.
activeItemBackgroundColor Active item background color.
activeItemBorderColor Active item border color.
allowDrop Indicates whether the viewer can accept data that the user drags onto it.
aspectRatioCorrection Manual aspect ratio correction value
autoCreateCanvas Indicates whether to automatically create the HTML5 Canvas Element when the image is updated.
autoResetOptions Determines which display properties to reset when a new image is set into the viewer (single item mode).
autoScrollDiv Auto Scroll HTML Div Element.
backImage Optional background element to be displayed in the viewer (single item mode).
backImageLoadImageUrlMode Specifies how an image should be loaded when this item is provided a URL (single item mode)
backImageUrl URL to the optional background image to displayed in the viewer (single item mode).
canRender Gets a value that indicate if the ImageViewer will render the content when changes are made to the control's properties or to the items.
canTransform Gets a value that indicate if the ImageViewer will update the transformation matrices and view layout when changes are made to the control's properties or to the items.
canvas HTML5 Canvas Element to be displayed in the viewer (single item mode).
clipImageToContent Indicates whether to clip the image outside the content area if ResizeOnTransform was set to false.
controlSize Control size.
defaultInteractiveMode Default interactive mode.
defaultZoomOrigin Origin of the default zoom point for current horizontal and vertical alignment, in control pixel coordinates.
dropCopyKeyState Modifier key used to initiate a copy drop operation
dropLinkKeyState Modifier key used to initiate a link drop operation
dropMoveKeyState Modifier key used to initiate a move drop operation
element The HTML or SVG Element to be displayed in the viewer (single item mode).
enableRequestAnimationFrame Indicates whether the ImageViewer should use HTML5 requestAnimationFrame when renderingthe image.
eraseBackgroundOnInvalidate Indicates whether the ImageViewer will clear the foreground canvas prior to rendering.
eventCanvas The Background HTML5 Canvas Element.
flip Flip the view vertically.
flipImageElement Flip the image vertically without the border.
floater Floater image (single item mode).
floaterOpacity Opacity used when rendering the floaters in this ImageViewer
floaterRegionRenderMode Indicates how floater regions are rendered.
floaterTransform Transformation matrix used by the floater image (single item mode).
foreCanvas The Foreground HTML5 Canvas Element.
hasImage Gets a value that indicate if the viewer currently has an image (single item mode).
hasItems Gets a value that indicate whether this viewer has any items.
hasSize Whether or not the ControlSize has a valid size.
hitTestStateInteractiveMode The ImageViewerInteractiveMode that is currently in a hit-test state.
hoveredItemBackgroundColor Hovered items background color.
hoveredItemBorderColor Hovered items border color.
idleInteractiveMode The ImageViewerInteractiveMode that is currently acting as the first idle mode.
image The HTML Image Element to be displayed in the viewer (single item mode).
imageBackgroundColor Images background color.
imageBorderColor Images border color.
imageBorderThickness Images border thickness.
imageBounds Physical position and size of the image in the viewer (single item mode).
imageDropShadow Images drop shadow properties
imageHorizontalAlignment Specifies how to align the images inside their items horizontally.
imageProcessingLibrariesPath Path to the image processing library script files.
imageRegionRenderMode Indicates how image regions are rendered.
imageResolution Resolution in dots/inch (or DPI) of the image (single item mode).
imageScale Optional scale value to use when rendering the images (single item mode).
imagesDiv Internally used for loading SVG documents with embedded images.
imageSize Size of the image in the viewer (single item mode).
imageTransform Current transformation matrix used for displaying the image (single item mode).
imageUrl URL to the image to displayed in the viewer (single item mode).
imageVerticalAlignment Specifies how to align the images inside their items vertically.
interactiveModes The list of interactive modes in this ImageViewer.
interactiveService The InteractiveService for this viewer control.
interpolationMode Interpolation mode used by this ImageViewer.
interpolationRunMode Interpolation run mode used by this ImageViewer.
invert Indicates whether to invert the items images.
isRenderRedirected Gets a value that indicate whether the current rendering operation is targeting an external device rather the control itself.
isSyncSource Indicates that this image viewer can act as a sync source.
isSyncTarget Indicates that this image viewer can act as a sync target.
isTransitionsEnabled Detect if the image viewer is in a state where CSS transition detection is enabled.
itemBackgroundColor Default items background color.
itemBorderColor Default items border color.
itemBorderThickness Items border thickness.
itemHorizontalAlignment Specifies how to align the items inside the view horizontally.
itemMargin Margins to use between the view and the items.
itemPadding Padding to use between the items border and the content.
items The collection of items in this ImageViewer
itemSize Default item size.
itemSizeMode Indicates how the images are displayed inside their items.
itemSpacing Spacing to use between neighboring items.
itemTextColor Default items text color.
itemTextFont Items text font.
itemTextTrimming Items text trimming options.
itemTextWrap Indicates whether the items text should automatically wrap to the next line if needed.
itemVerticalAlignment Specifies how to align the items inside the view vertically.
loadImageUrlMode Specifies how an image should be loaded when this item is provided a URL (single item mode)
mainDiv Main HTML Div Element.
maximumScaleFactor Maximum scale factor allowed.
maximumScrollSize Current maximum scroll size allowed.
minimumScaleFactor Minimum scale factor allowed.
ownerDraw Indicates whether the control automatically renders the view and items.
passthroughDiv An HTML Div Element used for assistance with pointer events capture.
resizeElementForView Indicates whether to resize the item element instead of scaling it for the view.
resizeOnTransform Indicates whether the viewer should change the size of the scrolling area when an item is transformed.
restrictScroll Indicates whether scrolling or panning the view outside the maximum range is allowed.
reverse Reverse the view horizontally.
reverseImageElement Reverse the image horizontally without the border.
rotateAngle Value of the rotation angle to use when displaying the view.
scaleFactor Value of the scale factor for the view display.
screenDpi Current screen resolution in dots per inch (or DPI).
scrollMode Determines how the control handles scrollbars when the current transformation results in the view area being larger thanthe control.
scrollOffset Scroll offset value.
selectedItemBackgroundColor Selected items background color.
selectedItemBorderColor Selected items border color.
selectedItemTextColor Selected items text color.
sizeMode Gets a value that determines how the control displays the view and adjusts the display automatically.
syncId Gets the sync ID of this image viewer.
tag Object that contains data about the control.
textHorizontalAlignment Specifies how to align the text inside their items horizontally.
textVerticalAlignment Specifies how to align the text inside their items vertically.
updateShadowOnRotation Deprecated. Indicates whether to update the CSS values for the box-shadow property of each item border element.
useDpi Indicates whether the control must account for the physical resolution of the images when calculating the display properties.
useElements Checks if the viewer is using the Elements Mode.
viewBorderColor View border color.
viewBorderThickness View border thickness.
viewBounds Current view bounds.
viewDiv Holds the item elements and shows the viewer's view margin, view padding, view border, and view box shadow.
viewDivHolder Parent of the image viewer ImageViewer.ViewDiv.
viewDropShadow View drop shadow properties
viewHorizontalAlignment Specifies how to align the view inside the control horizontally.
viewLayout View layout used by this ImageViewer.
viewMargin Margins to use between the control boundary and the view.
viewPadding Padding to use between the view border and the items.
viewSize Current view size in pixels.
viewTransform Current transformation matrix of the view.
viewVerticalAlignment Specifies how to align the view inside the control vertically.
workingInteractiveMode The ImageViewerInteractiveMode that is currently processing the input events (working).
xScaleFactor Value of the horizontal scale factor for the view display.
yScaleFactor Value of the vertical scale factor for the view display.
Help Version 19.0.2017.10.18
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Leadtools.Controls Assembly