org.mapsforge.map.model

Class DisplayModel

java.lang.Object

org.mapsforge.map.model.common.Observable

org.mapsforge.map.model.DisplayModel

public class DisplayModel
extends Observable

Encapsulates the display characteristics for a MapView, such as tile size and background color. The size of map tiles is used to adapt to devices with differing pixel densities and users with different preferences: The larger the tile, the larger everything is rendered, the effect is one of effectively stretching everything. The default device dependent scale factor is determined at the GraphicFactory level, while the DisplayModel allows further adaptation to cater for user needs or application development (maybe a small map and large map, or to prevent upscaling for downloaded tiles that do not scale well).

Constructor Summary

Constructors

Constructor and Description
DisplayModel()

Method Summary

Methods

Modifier and Type	Method and Description
int	getBackgroundColor() Returns the background color.
static float	getDefaultUserScaleFactor() Get the default scale factor for all newly created DisplayModels.
static float	getDeviceScaleFactor() Returns the device scale factor.
float	getScaleFactor() Returns the overall scale factor.
int	getTileSize() Width and height of a map tile in pixel after system and user scaling is applied.
float	getUserScaleFactor() Returns the user scale factor.
void	setBackgroundColor(int color) Set the background color.
static void	setDefaultUserScaleFactor(float scaleFactor) Set the default scale factor for all newly created DisplayModels, so can be used to apply user settings from a device.
static void	setDeviceScaleFactor(float scaleFactor) Set the device scale factor.
void	setFixedTileSize(int tileSize) Forces the tile size to a fixed value
void	setUserScaleFactor(float scaleFactor) Set the user scale factor.

Methods inherited from class org.mapsforge.map.model.common.Observable

addObserver, notifyObservers, removeObserver

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DisplayModel

public DisplayModel()

Method Detail

getDefaultUserScaleFactor

public static float getDefaultUserScaleFactor()

Get the default scale factor for all newly created DisplayModels.

Returns:

the default scale factor to be applied to all new DisplayModels.

getDeviceScaleFactor

public static float getDeviceScaleFactor()

Returns the device scale factor.

Returns:

the device scale factor.

setDefaultUserScaleFactor

public static void setDefaultUserScaleFactor(float scaleFactor)

Set the default scale factor for all newly created DisplayModels, so can be used to apply user settings from a device.

Parameters:

scaleFactor - the default scale factor to be applied to all new DisplayModels.

setDeviceScaleFactor

public static void setDeviceScaleFactor(float scaleFactor)

Set the device scale factor.

Parameters:

scaleFactor - the device scale factor.

getBackgroundColor

public int getBackgroundColor()

Returns the background color.

Returns:

the background color.

getScaleFactor

public float getScaleFactor()

Returns the overall scale factor.

Returns:

the combined device/user scale factor.

getTileSize

public int getTileSize()

Width and height of a map tile in pixel after system and user scaling is applied.

getUserScaleFactor

public float getUserScaleFactor()

Returns the user scale factor.

Returns:

the user scale factor.

setBackgroundColor

public void setBackgroundColor(int color)

Set the background color.

Parameters:

color - the color to use.

setFixedTileSize

public void setFixedTileSize(int tileSize)

Forces the tile size to a fixed value

Parameters:

tileSize - the fixed tile size to use if != 0, if 0 the tile size will be calculated

setUserScaleFactor

public void setUserScaleFactor(float scaleFactor)

Set the user scale factor.

Parameters:

scaleFactor - the user scale factor to use.