AI2 Component  (Version nb184)
com.google.appinventor.components.runtime.LineString Class Reference
Inheritance diagram for com.google.appinventor.components.runtime.LineString:
com.google.appinventor.components.runtime.MapFeatureBase com.google.appinventor.components.runtime.util.MapFactory.MapLineString com.google.appinventor.components.runtime.util.MapFactory.MapFeature com.google.appinventor.components.runtime.util.MapFactory.HasStroke com.google.appinventor.components.runtime.util.MapFactory.MapFeature com.google.appinventor.components.runtime.util.MapFactory.HasStroke com.google.appinventor.components.runtime.Component com.google.appinventor.components.runtime.Component

Public Member Functions

 LineString (MapFactory.MapFeatureContainer container)
 
String Type ()
 
YailList Points ()
 
void Points (@NonNull YailList points)
 
void PointsFromString (String points)
 
void StrokeWidth (int width)
 
List< GeoPoint > getPoints ()
 
void updatePoints (List< GeoPoint > points)
 
- Public Member Functions inherited from com.google.appinventor.components.runtime.MapFeatureBase
void setMap (MapFactory.MapFeatureContainer container)
 
void removeFromMap ()
 
void Visible (boolean visibility)
 
boolean Visible ()
 
void StrokeColor (int argb)
 
int StrokeColor ()
 
void StrokeOpacity (float opacity)
 
float StrokeOpacity ()
 
int StrokeWidth ()
 
void Draggable (boolean draggable)
 
boolean Draggable ()
 
void Title (String title)
 
String Title ()
 
void Description (String description)
 
String Description ()
 
void EnableInfobox (boolean enable)
 
boolean EnableInfobox ()
 
void ShowInfobox ()
 
void HideInfobox ()
 
YailList Centroid ()
 
double DistanceToPoint (double latitude, double longitude, boolean centroid)
 
double DistanceToFeature (MapFeature mapFeature, final boolean centroids)
 
void Click ()
 
void LongClick ()
 
void StartDrag ()
 
void Drag ()
 
void StopDrag ()
 
HandlesEventDispatching getDispatchDelegate ()
 
final synchronized GeoPoint getCentroid ()
 
final synchronized Geometry getGeometry ()
 
- Public Member Functions inherited from com.google.appinventor.components.runtime.util.MapFactory.MapFeature
void setMap (MapFeatureContainer map)
 
- Public Member Functions inherited from com.google.appinventor.components.runtime.util.MapFactory.MapLineString
void Points (YailList points)
 

Protected Member Functions

Geometry computeGeometry ()
 
- Protected Member Functions inherited from com.google.appinventor.components.runtime.MapFeatureBase
 MapFeatureBase (MapFeatureContainer container, MapFeatureVisitor< Double > distanceComputation)
 
final synchronized void clearGeometry ()
 

Additional Inherited Members

- Static Public Attributes inherited from com.google.appinventor.components.runtime.Component
static final String ASSET_DIRECTORY = "component"
 
static final int ALIGNMENT_NORMAL = 0
 
static final int ALIGNMENT_CENTER = 1
 
static final int ALIGNMENT_OPPOSITE = 2
 
static final int ACCELEROMETER_SENSITIVITY_WEAK = 1
 
static final int ACCELEROMETER_SENSITIVITY_MODERATE = 2
 
static final int ACCELEROMETER_SENSITIVITY_STRONG = 3
 
static final int BUTTON_SHAPE_DEFAULT = 0
 
static final int BUTTON_SHAPE_ROUNDED = 1
 
static final int BUTTON_SHAPE_RECT = 2
 
static final int BUTTON_SHAPE_OVAL = 3
 
static final int COLOR_NONE = 0x00FFFFFF
 
static final int COLOR_BLACK = 0xFF000000
 
static final int COLOR_BLUE = 0xFF0000FF
 
static final int COLOR_CYAN = 0xFF00FFFF
 
static final int COLOR_DKGRAY = 0xFF444444
 
static final int COLOR_GRAY = 0xFF888888
 
static final int COLOR_GREEN = 0xFF00FF00
 
static final int COLOR_LTGRAY = 0xFFCCCCCC
 
static final int COLOR_MAGENTA = 0xFFFF00FF
 
static final int COLOR_ORANGE = 0xFFFFC800
 
static final int COLOR_PINK = 0xFFFFAFAF
 
static final int COLOR_RED = 0xFFFF0000
 
static final int COLOR_WHITE = 0xFFFFFFFF
 
static final int COLOR_YELLOW = 0xFFFFFF00
 
static final int COLOR_DEFAULT = 0x00000000
 
static final String DEFAULT_VALUE_COLOR_NONE = "&H00FFFFFF"
 
static final String DEFAULT_VALUE_COLOR_BLACK = "&HFF000000"
 
static final String DEFAULT_VALUE_COLOR_BLUE = "&HFF0000FF"
 
static final String DEFAULT_VALUE_COLOR_CYAN = "&HFF00FFFF"
 
static final String DEFAULT_VALUE_COLOR_DKGRAY = "&HFF444444"
 
static final String DEFAULT_VALUE_COLOR_GRAY = "&HFF888888"
 
static final String DEFAULT_VALUE_COLOR_GREEN = "&HFF00FF00"
 
static final String DEFAULT_VALUE_COLOR_LTGRAY = "&HFFCCCCCC"
 
static final String DEFAULT_VALUE_COLOR_MAGENTA = "&HFFFF00FF"
 
static final String DEFAULT_VALUE_COLOR_ORANGE = "&HFFFFC800"
 
static final String DEFAULT_VALUE_COLOR_PINK = "&HFFFFAFAF"
 
static final String DEFAULT_VALUE_COLOR_RED = "&HFFFF0000"
 
static final String DEFAULT_VALUE_COLOR_WHITE = "&HFFFFFFFF"
 
static final String DEFAULT_VALUE_COLOR_YELLOW = "&HFFFFFF00"
 
static final String DEFAULT_VALUE_COLOR_DEFAULT = "&H00000000"
 
static final float FONT_DEFAULT_SIZE = 14
 
static final int LAYOUT_ORIENTATION_HORIZONTAL = ComponentConstants.LAYOUT_ORIENTATION_HORIZONTAL
 
static final int LAYOUT_ORIENTATION_VERTICAL = ComponentConstants.LAYOUT_ORIENTATION_VERTICAL
 
static final int SCALING_SCALE_PROPORTIONALLY = 0
 
static final int SCALING_SCALE_TO_FIT = 1
 
static final int TYPEFACE_DEFAULT = 0
 
static final int TYPEFACE_SANSSERIF = 1
 
static final int TYPEFACE_SERIF = 2
 
static final int TYPEFACE_MONOSPACE = 3
 
static final int LENGTH_PREFERRED = -1
 
static final int LENGTH_FILL_PARENT = -2
 
static final int LENGTH_UNKNOWN = -3
 
static final int LENGTH_PERCENT_TAG = -1000
 
static final int TOAST_LENGTH_SHORT = 0
 
static final int TOAST_LENGTH_LONG = 1
 
static final int DIRECTION_NORTH = 1
 
static final int DIRECTION_NORTHEAST = 2
 
static final int DIRECTION_EAST = 3
 
static final int DIRECTION_SOUTHEAST = 4
 
static final int DIRECTION_SOUTH = -1
 
static final int DIRECTION_SOUTHWEST = -2
 
static final int DIRECTION_WEST = -3
 
static final int DIRECTION_NORTHWEST = -4
 
static final int DIRECTION_NONE = 0
 
static final int DIRECTION_MIN = -4
 
static final int DIRECTION_MAX = 4
 
static float SLIDER_MIN_VALUE = 10
 
static float SLIDER_MAX_VALUE = 50
 
static float SLIDER_THUMB_VALUE = (SLIDER_MIN_VALUE + SLIDER_MAX_VALUE) / 2.0f
 
static final String DEFAULT_VALUE_TEXT_TO_SPEECH_COUNTRY = ""
 
static final String DEFAULT_VALUE_TEXT_TO_SPEECH_LANGUAGE = ""
 
- Protected Attributes inherited from com.google.appinventor.components.runtime.MapFeatureBase
MapFeatureContainer container = null
 
Map map = null
 

Detailed Description

LineString is a component for drawing an open, continuous sequence of lines on a Map. To add new points to a LineString in the designer, drag the midpoint of any segment away from the line to introduce a new vertex. Move a vertex by clicking and dragging the vertex to a new location. Clicking on a vertex will delete the vertex, unless only two remain.

Definition at line 49 of file LineString.java.

Constructor & Destructor Documentation

◆ LineString()

com.google.appinventor.components.runtime.LineString.LineString ( MapFactory.MapFeatureContainer  container)

Definition at line 100 of file LineString.java.

Member Function Documentation

◆ computeGeometry()

Geometry com.google.appinventor.components.runtime.LineString.computeGeometry ( )
protected

Reimplemented from com.google.appinventor.components.runtime.MapFeatureBase.

Definition at line 215 of file LineString.java.

◆ getPoints()

List<GeoPoint> com.google.appinventor.components.runtime.LineString.getPoints ( )

Gets the list of points in GeoPoint format.

Returns
the LineString's points

Implements com.google.appinventor.components.runtime.util.MapFactory.MapLineString.

Definition at line 205 of file LineString.java.

◆ Points() [1/2]

YailList com.google.appinventor.components.runtime.LineString.Points ( )

Gets the list of points defining the LineString.

Returns
a list of points in (lat, long) format.

Implements com.google.appinventor.components.runtime.util.MapFactory.MapLineString.

Definition at line 118 of file LineString.java.

◆ Points() [2/2]

void com.google.appinventor.components.runtime.LineString.Points ( @NonNull YailList  points)

The list of points, as pairs of latitudes and longitudes, in the LineString.

Parameters
pointsthe new coordinates for the LineString.

Definition at line 128 of file LineString.java.

◆ PointsFromString()

void com.google.appinventor.components.runtime.LineString.PointsFromString ( String  points)

Set the points of the LineString from a specially-coded character string of the form: [[latitude1, longitude1], [latitude2, longitude2], ...]

Parameters
pointsString containing a sequence of points for the LineString.

Definition at line 152 of file LineString.java.

◆ StrokeWidth()

void com.google.appinventor.components.runtime.LineString.StrokeWidth ( int  width)

Sets or gets the width of the stroke used to outline the type%.

Parameters
widththe outline width

Reimplemented from com.google.appinventor.components.runtime.MapFeatureBase.

Definition at line 200 of file LineString.java.

◆ Type()

String com.google.appinventor.components.runtime.LineString.Type ( )

The type (class) of the map feature. Typically this should be getClass().getSimpleName().

Returns
string representing the type of the feature

Implements com.google.appinventor.components.runtime.util.MapFactory.MapFeature.

Definition at line 110 of file LineString.java.

◆ updatePoints()

void com.google.appinventor.components.runtime.LineString.updatePoints ( List< GeoPoint >  points)

Updates the points of the LineString without refreshing the map. This is intended to be called to finalize a drag event when the visual representation is correct but the internal representation in the component is not. NB: This should not invalidate the map view.

Parameters
pointsthe new points for the LineString.

Implements com.google.appinventor.components.runtime.util.MapFactory.MapLineString.

Definition at line 220 of file LineString.java.


The documentation for this class was generated from the following file: