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java.lang.Object org.jdrawing.AbstractDrawingModelCache org.jdrawing.GridDrawingModelCache
This implementation of DrawingModelCache
optimizes
drawing operations by splitting all the drawing area into rectangular
cells and caching elements intersecting each cell.
Constructor Summary | |
GridDrawingModelCache()
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Method Summary | |
void |
elementsAdded(DrawingModelEvent event)
Invoked after elements have been inserted into the model. |
void |
elementsChanged(DrawingModelEvent event)
Invoked after elements have been changed in some way. |
void |
elementsRemoved(DrawingModelEvent event)
Invoked after elements have been removed from the model. |
java.awt.Dimension |
getCellSize()
Return size of cells used by this cache. |
java.lang.Object[] |
getElementsForPoint(java.awt.geom.Point2D point)
Returns elements which contain a given point. |
java.lang.Object[] |
getElementsForRectangle(java.awt.geom.Rectangle2D rectangle)
Returns elements neccessary for repainting given area. |
java.awt.geom.Rectangle2D |
getModelBounds2D()
Returns the high precision bounding box of all elements of the model. |
void |
modelChanged(DrawingModelEvent event)
Invoked after the model has drastically changed in some way. |
void |
setCellSize(java.awt.Dimension cellSize)
Set size for rectangular cells. |
void |
setModel(DrawingModel model)
Sets the DrawingModel that will be cached by this cache. |
void |
setRenderer(DrawingRenderer renderer)
Sets the DrawingRenderer that will be used in this cache.
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Methods inherited from class org.jdrawing.AbstractDrawingModelCache |
addDrawingModelCacheListener, fireAreaChanged, fireDrawingChanged, getDrawingModelCacheListeners, getModel, getModelBounds, getRenderer, removeDrawingModelCacheListener |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public GridDrawingModelCache()
Method Detail |
public void setModel(DrawingModel model)
DrawingModelCache
DrawingModel
that will be cached by this cache.
setModel
in interface DrawingModelCache
setModel
in class AbstractDrawingModelCache
public void setRenderer(DrawingRenderer renderer)
DrawingModelCache
DrawingRenderer
that will be used in this cache.
Renderer is used to obtain the bounds of an element of the model.
setRenderer
in interface DrawingModelCache
setRenderer
in class AbstractDrawingModelCache
public void setCellSize(java.awt.Dimension cellSize)
cellSize
- new size for cellspublic java.awt.Dimension getCellSize()
public java.awt.geom.Rectangle2D getModelBounds2D()
DrawingModelCache
getModelBounds2D
in interface DrawingModelCache
public java.lang.Object[] getElementsForRectangle(java.awt.geom.Rectangle2D rectangle)
DrawingModelCache
getElementsForRectangle
in interface DrawingModelCache
rectangle
- area that will be repainted
public java.lang.Object[] getElementsForPoint(java.awt.geom.Point2D point)
DrawingModelCache
getElementsForPoint
in interface DrawingModelCache
point
- the Point2D
return elements containing given pointpublic void elementsAdded(DrawingModelEvent event)
DrawingModelListener
elementsAdded
in interface DrawingModelListener
elementsAdded
in class AbstractDrawingModelCache
event
- DrawingModelEvent object encapsulating event
informationpublic void elementsRemoved(DrawingModelEvent event)
DrawingModelListener
elementsRemoved
in interface DrawingModelListener
elementsRemoved
in class AbstractDrawingModelCache
event
- DrawingModelEvent object encapsulating event
informationpublic void elementsChanged(DrawingModelEvent event)
DrawingModelListener
elementsChanged
in interface DrawingModelListener
elementsChanged
in class AbstractDrawingModelCache
event
- DrawingModelEvent object encapsulating event
informationpublic void modelChanged(DrawingModelEvent event)
DrawingModelListener
modelChanged
in interface DrawingModelListener
modelChanged
in class AbstractDrawingModelCache
event
- DrawingModelEvent object encapsulating event
information
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