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Rogue Wave Views Maps Package API Reference Guide |
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Rogue Wave Views Maps Package API Reference Guide |
Rogue Wave Views Documentation Home |
This class represents the elementary element used by the load-on-demand process. More...
#include <ilviews/maps/tiling/tile.h>
Public Member Functions | |
| void | addObject (IlvGraphic *g, IlvMapFeatureId *id=0) |
Adds a graphic object to an IlvTiledLayer. More... | |
| void | boundingBox (IlvRect &rect) const |
| Returns the bounding box of the tile in the manager coordinate system. More... | |
| void | deleteAll () |
| Empties the tile except for the objects that are shared by another non empty tile. More... | |
| IlInt | getColumn () const |
| Returns the column of the tile. More... | |
| IlvTileController * | getController () const |
| Returns the controller of the tile. More... | |
| IlvDisplay * | getDisplay () const |
| Returns the display of controller manager. More... | |
| IlvGraphic * | getObject (IlvMapFeatureId *id) const |
| Returns the object of the specified ID if it is already loaded in the layer. More... | |
| IlInt | getRow () const |
| Returns the row of the tile. More... | |
| IlvTileStatus | getStatus () const |
| Returns the status of the tile. More... | |
| IlBoolean | isLoadComplete () const |
Returns IlTrue if the tile is fully loaded. More... | |
| IlBoolean | isObjectShared (IlvGraphic *graphic) const |
Returns IlTrue if the object graphic is shared by other tiles. More... | |
| void | loadComplete () |
| Notifies the tile that it has been fully loaded, thus, the method must be called by the tile loaders. More... | |
| void | reDraw () const |
| Redraws a tile. More... | |
This class represents the elementary element used by the load-on-demand process.
Library: ilvmaps
A tile represents an elementary rectangular area that is loaded or released when needed by the application. Tiles are managed by an IlvTileController.
In most cases, the tile controller will be associated with an IlvTiledLayer. This means that the tiles represent areas that must be filled with graphic objects when they become visible due to the user of the application scrolling or zooming on a view.
More sophisticated applications can use a tile controller without attaching it to a layer, for example, to load data that is needed to process an area that becomes visible.
| void IlvTile::addObject | ( | IlvGraphic * | g, |
| IlvMapFeatureId * | id = 0 |
||
| ) |
Adds a graphic object to an IlvTiledLayer.
When implementing an IlvTileLoader, objects should not be added to a manager using IlvManager::addObject. This method must be called only if the tile controller is attached to a layer.
| g | The graphic object to be added. |
| id | The ID of the object. This parameter can be set to 0. The ID is owned by the tile and will be deleted when the tile will be released. |
getObject(), IlvTileLoader. | void IlvTile::boundingBox | ( | IlvRect & | rect | ) | const |
Returns the bounding box of the tile in the manager coordinate system.
| rect | The returned IlvRect object containing the bounding box. |
| void IlvTile::deleteAll | ( | ) |
Empties the tile except for the objects that are shared by another non empty tile.
This method must be called only if the tile controller is attached to a layer.
| IlInt IlvTile::getColumn | ( | ) | const |
Returns the column of the tile.
| IlvTileController* IlvTile::getController | ( | ) | const |
Returns the controller of the tile.
IlvTileController object that controls this tile. | IlvDisplay* IlvTile::getDisplay | ( | ) | const |
Returns the display of controller manager.
| IlvGraphic* IlvTile::getObject | ( | IlvMapFeatureId * | id | ) | const |
Returns the object of the specified ID if it is already loaded in the layer.
This method must be called only if the tile is attached to a layer.
| id | The ID of the object. |
addObject(). | IlInt IlvTile::getRow | ( | ) | const |
Returns the row of the tile.
| IlvTileStatus IlvTile::getStatus | ( | ) | const |
| IlBoolean IlvTile::isLoadComplete | ( | ) | const |
Returns IlTrue if the tile is fully loaded.
IlTrue if the load is complete and IlFalse otherwise. loadComplete(). | IlBoolean IlvTile::isObjectShared | ( | IlvGraphic * | graphic | ) | const |
Returns IlTrue if the object graphic is shared by other tiles.
This method must be called only if the tile controller is attached to a layer. This method only tests objects against currently locked or cached tiles.
| graphic | The graphic object. |
IlTrue if the object is shared and IlFalse otherwise. | void IlvTile::loadComplete | ( | ) |
Notifies the tile that it has been fully loaded, thus, the method must be called by the tile loaders.
IlvTileLoader. | void IlvTile::reDraw | ( | ) | const |
Redraws a tile.
Should be called only if the tile is attached to a layer.
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