| java.lang.Object
 com.sun.perseus.model.UpdateAdapter
com.sun.perseus.model.DirtyAreaManager
| DirtyAreaManager | | public class DirtyAreaManager extends UpdateAdapter (Code) | | The DirtyAreaManager abstraction is responsible for tracking
areas of the document tree which need to be repainted.
version:
$Id: DirtyAreaManager.java,v 1.16 2006/06/29 10:47:30 ln156897 Exp $ |
| Inner Class :public static class TileElement extends Tile | |
| Inner Class :public static class TileQuadrant extends TileElement | |
| Field Summary | |
| final public static int | DEFAULT_TILE_MIN_SIZE
The minimal tile width or height. | | public static boolean | ON
TEMPORARY: GLOBAL VARIABLE ALLOWING US TO CONTROL WHETHER DIRTY AREA
TRACKING IS ON OR OFF. | | Vector | dirtyNodes
The list of modified nodes. | | int | lastHeight
Height of the viewport last time it was painted. | | RenderGraphics | lastRG
The last RenderGraphics for which dirty areas were checked. | | int | lastWidth
Width of the viewport last time it was painted. | | TileElement | rootTile
The Root tile representing this surface. | | int | tileMinSize
The minimal size, in both dimensions, for dirty area tiles. | | Viewport | vp
The associated viewport, which defines the size of the rendering
area. |
| DEFAULT_TILE_MIN_SIZE | | final public static int DEFAULT_TILE_MIN_SIZE(Code) | | The minimal tile width or height.
|
| ON | | public static boolean ON(Code) | | TEMPORARY: GLOBAL VARIABLE ALLOWING US TO CONTROL WHETHER DIRTY AREA
TRACKING IS ON OR OFF.
|
| dirtyNodes | | Vector dirtyNodes(Code) | | The list of modified nodes. Some may have been removed from the tree.
|
| lastHeight | | int lastHeight(Code) | | Height of the viewport last time it was painted.
|
| lastWidth | | int lastWidth(Code) | | Width of the viewport last time it was painted.
|
| rootTile | | TileElement rootTile(Code) | | The Root tile representing this surface.
|
| tileMinSize | | int tileMinSize(Code) | | The minimal size, in both dimensions, for dirty area tiles.
|
| vp | | Viewport vp(Code) | | The associated viewport, which defines the size of the rendering
area.
|
| DirtyAreaManager | | public DirtyAreaManager(Viewport vp)(Code) | |
Parameters:
vp - the associated viewport. |
| getDirtyAreas | | public TileElement getDirtyAreas(RenderGraphics rg)(Code) | | It is the responsibility of the dirty area manager to compute the list
of dirty areas which need to be re-painted. The minimum includes the
area covered by the modified node's old and new bounds. For efficiency
purposes, the implementation may collapse the rectangles into a few ones.
Parameters:
rg - the RenderGraphics for which dirty areas are queried. The firsttile a RenderGraphics is passed to this method, the full area is considered dirty. the set of rectangles to render, based on the list of node whose rendering has changed. |
| modifyingNodeRendering | | public void modifyingNodeRendering(ModelNode node)(Code) | | Invoked when a node's Rendering is about to be modified
Parameters:
node - the node which is about to be modified |
| nodeInserted | | public void nodeInserted(ModelNode node)(Code) | | Invoked when a node has been inserted into the tree
Parameters:
node - the newly inserted node |
| refresh | | public void refresh(ModelNode mn, RenderGraphics rg, RGB clearPaint)(Code) | | Asks the DirtyAreaManager to repaint all the diry areas on the given
RenderGraphics
Parameters:
mn - the model node to render, typically, the DocumentNode.
Parameters:
rg - the RenderGraphics to render to.
Parameters:
clearPaint - the color to use to clear the background |
| setTileMinSize | | public void setTileMinSize(int tileMinSize)(Code) | |
Parameters:
tileMinSize - the minimal size for a rendering tile. |
| setViewport | | public void setViewport(Viewport vp)(Code) | |
Parameters:
vp - the new associated viewport. |
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