AnnotSnappingManager
extends Object| java.lang.Object | |
| ↳ | com.pdftron.pdf.utils.AnnotSnappingManager |
Class Overview
This class is in charge of storing the data used for annotation snapping.
Snapping rules: - Snapping is separated into horizontal and vertical snapping, and we can only show at most one of each. - Snapping will prioritize snapping in each axis as follows: page (center) > annot (center) > annot (edges) (for example, if an annot can snap to both an annot and page on the x axis, it will prioritize showing page snapping) - It multiple snapping occurs, we prioritize showing snapping to the closest point
Summary
| Nested Classes | |||||||||||
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| enum | AnnotSnappingManager.SnappingGroup | Defines annotation groups that should snap to each other. | |||||||||
| class | AnnotSnappingManager.SnappingResult | ||||||||||
| enum | AnnotSnappingManager.SnappingType | ||||||||||
| Public Constructors | |||||||||||
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| AnnotSnappingManager() | |||||||||||
| Public Methods | |||||||||||
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| AnnotSnappingManager.SnappingResult |
checkSnapping(PDFViewCtrl pdfViewCtrl, Annot annot, Rect rect, int pageNum, boolean pageCenterSnapping, boolean annotCenterSnapping, boolean annotLeftSnapping, boolean annotTopSnapping, boolean annotRightSnapping, boolean annotBottomSnapping)
Returns information on whether the supplied rect can snap with any of the existing annotations
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| void | clearCache() | ||||||||||
| void |
setEnabled(boolean enabled)
Sets whether snapping should be disabled.
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| void |
setPaused(boolean paused)
Sets whether snapping should be paused.
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| void | setThreshold(double threshold) | ||||||||||
| void | tryUpdateCache(PDFViewCtrl pdfViewCtrl, boolean forceUpdate) | ||||||||||
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Inherited Methods | |||||||||||
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From class
java.lang.Object
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Public Constructors
public AnnotSnappingManager ()
Public Methods
public AnnotSnappingManager.SnappingResult checkSnapping (PDFViewCtrl pdfViewCtrl, Annot annot, Rect rect, int pageNum, boolean pageCenterSnapping, boolean annotCenterSnapping, boolean annotLeftSnapping, boolean annotTopSnapping, boolean annotRightSnapping, boolean annotBottomSnapping)
Returns information on whether the supplied rect can snap with any of the existing annotations
Parameters
| pdfViewCtrl | the PDFViewCtrl |
|---|---|
| annot | the annotation of interest to applys snapping |
| rect | the rect to compare against the cached information. Assumes rect is normalized. |
| pageNum | the page number containg the annotation |
| pageCenterSnapping | whether page center snapping is checked |
| annotCenterSnapping | whether annot center snapping is checked |
| annotLeftSnapping | whether annot left snapping is checked |
| annotTopSnapping | whether annot top snapping is checked |
| annotRightSnapping | whether annot right snapping is checked |
| annotBottomSnapping | whether annot bottom snapping is checked |
Returns
- the result of snapping
Throws
| PDFNetException |
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public void clearCache ()
public void setEnabled (boolean enabled)
Sets whether snapping should be disabled. When disabled, no snapping will occur and the cache will not be populated.
public void setPaused (boolean paused)
Sets whether snapping should be paused. When paused, no snapping will occur but the cache will continue to be updated.