TdkMapDisplay Class Reference
[The Control Module]

Defines the TdkMapDisplay class. More...

#include <TdkMapDisplay.h>

Inheritance diagram for TdkMapDisplay:

List of all members.

Public Member Functions
	TdkMapDisplay (TdkCanvas *canvas)
virtual	~TdkMapDisplay ()
virtual TeBox	getMapRange ()
	Calculates the bounding box of the elements being displayed.
virtual TeBox	getFullMapRange ()
	Calculates the bounding box of the elements in the map (being displayed or not).
virtual TeBox	getVisibleRegion ()
	Returns the region being displayed.
virtual void	fit ()
	Zoom to a level where all objects in the map can be seen.
virtual void	zoomArea (double x0, double y0, double x1, double y1)
	Zoom to a given area.
virtual void	zoom (double factor)
	Zoom by a fixed factor maintaining the center location.
virtual void	zoom (double xc, double yc, double factor)
	Zoom by a fixed factor.
virtual void	translateOrigin (double dx, double dy)
	Translates the origin of the display in some direction.
virtual void	pan (double dx, double dy)
	Pan (drag) the map in some direction.
virtual void	center (double x, double y)
	Centers the map around a given point.
virtual void	centerX (double x)
	Centers horizontally the map around a given point.
virtual void	centerY (double y)
	Centers vertically the map around a given point.
virtual void	draw ()
	Redraws the map (by getting all the information from the database again).
virtual bool	drawObjects (int buffer=TdkCanvas::cbrBack)
	Returns true if any theme was loaded.
virtual void	drawFrontObjects ()
virtual void	drawGraphLegend ()
virtual void	drawSelectedObjects ()
virtual void	drawIdentifiedObjects ()
virtual void	drawOver ()
	Redraws the map without erasing the current image displayed.
virtual void	refresh ()
	Puts in the canvas the image of the last drawn map.
virtual void	resize (int xmin, int ymin, int xmax, int ymax, TdkResizeMethods met=rsmPreserveScalePos)
	Change the drawble area of the canvas. Coordinates are defined in pixels.
virtual double	distanceMeters (double xmin, double ymin, double xmax, double ymax)
	Calculates the distance between two given points.
Protected Member Functions
virtual void	handleVSEvent (TdkEvent &event)
virtual void	handleVSEvent (TdkRedrawEvent &event)
virtual void	handleVSEvent (TdkRefreshEvent &event)
virtual void	handleVSEvent (TdkSelectObjectsEvent &event)
virtual void	handleVSEvent (TdkSelectObjectsGIDVectorEvent &event)
virtual void	handleVSEvent (TdkPickEvent &event)
virtual void	handleVSEvent (TdkRedrawSelectedObjectsEvent &event)
virtual void	handleVSEvent (TdkZoomAreaEvent &event)
virtual void	handleVSEvent (TdkSelectedObjectsBBoxEvent &event)
virtual void	handleVSEvent (TdkObjectIdentificationEvent &event)
virtual void	handleVSEvent (TdkClearObjectIdentificationEvent &event)
virtual void	handleVSEvent (TdkThemeObjectsIdentificationEvent &event)
virtual void	handleVOEvent (TdkEvent &event)
virtual void	handleVSEvent (TdkViewportPolylineFeedbackEvent &event)
virtual void	box (bool onlyVisible, double &xmin, double &ymin, double &xmax, double &ymax)

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Detailed Description

Defines the TdkMapDisplay class.

This class is the the component responsible for graphicaly displaying a map. It has a TdkCanvas component on which it draws themap. The basic operations performed by the map display are zoom, pan, fit, draw, coordinate transformations and calculations, etc.

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Constructor & Destructor Documentation

TdkMapDisplay::TdkMapDisplay

(

TdkCanvas *

canvas

)

Tecgraf - GIS development team

Tdk Framework

@(#) TdkMapDisplay.cpp

virtual TdkMapDisplay::~TdkMapDisplay

(

)

[inline, virtual]

---

Member Function Documentation

TeBox TdkMapDisplay::getMapRange

(

)

[virtual]

Calculates the bounding box of the elements being displayed.

TeBox TdkMapDisplay::getFullMapRange

(

)

[virtual]

Calculates the bounding box of the elements in the map (being displayed or not).

TeBox TdkMapDisplay::getVisibleRegion

(

)

[virtual]

Returns the region being displayed.

void TdkMapDisplay::fit

(

)

[virtual]

Zoom to a level where all objects in the map can be seen.

Reimplemented from TdkDisplay.

void TdkMapDisplay::zoomArea	(	double	x0,
		double	y0,
		double	x1,
		double	y1
	)			[virtual]

Zoom to a given area.

Parameters:

	x0	X world coordinate of the location at the top left corner of the area.
	y0	Y world coordinate of the location at the top left corner of the area.
	x1	X world coordinate of the location at the bottom right corner of the area.
	y1	Y world coordinate of the location at the bottom right corner of the area.

Reimplemented from TdkDisplay.

void TdkMapDisplay::zoom

(

double

factor

)

[virtual]

Zoom by a fixed factor maintaining the center location.

Parameters:

factor

Zoom factor.

Reimplemented from TdkDisplay.

void TdkMapDisplay::zoom	(	double	xc,
		double	yc,
		double	factor
	)			[virtual]

Zoom by a fixed factor.

Parameters:

	xc	X world coordinate of the location to be centralized in the new zoom level.
	yc	Y world coordinate of the location to be centralized in the new zoom level.
	factor	Zoom factor.

Reimplemented from TdkDisplay.

void TdkMapDisplay::translateOrigin	(	double	dx,
		double	dy
	)			[virtual]

Translates the origin of the display in some direction.

Parameters:

	dx	Origin's horizontal deslocation in world coordinates.
	dy	Origin's vertical deslocation in world coordinates.

void TdkMapDisplay::pan	(	double	dx,
		double	dy
	)			[virtual]

Pan (drag) the map in some direction.

Parameters:

	dx	Horizontal deslocation in world coordinates.
	dy	Vertical deslocation in world coordinates.

Reimplemented from TdkDisplay.

void TdkMapDisplay::center	(	double	x,
		double	y
	)			[virtual]

Centers the map around a given point.

Parameters:

	x	X coordinate of the point.
	y	Y coordinate of the point.

void TdkMapDisplay::centerX

(

double

x

)

[virtual]

Centers horizontally the map around a given point.

Parameters:

x

X coordinate of the point.

void TdkMapDisplay::centerY

(

double

y

)

[virtual]

Centers vertically the map around a given point.

Parameters:

y

Y coordinate of the point.

void TdkMapDisplay::draw

(

)

[virtual]

Redraws the map (by getting all the information from the database again).

Reimplemented from TdkDisplay.

Reimplemented in TdkJNIMapDisplay.

bool TdkMapDisplay::drawObjects

(

int

buffer = TdkCanvas::cbrBack

)

[virtual]

Returns true if any theme was loaded.

drawImageOk

void TdkMapDisplay::drawFrontObjects

(

)

[virtual]

void TdkMapDisplay::drawGraphLegend

(

)

[virtual]

void TdkMapDisplay::drawSelectedObjects

(

)

[virtual]

void TdkMapDisplay::drawIdentifiedObjects

(

)

[virtual]

void TdkMapDisplay::drawOver

(

)

[virtual]

Redraws the map without erasing the current image displayed.

void TdkMapDisplay::refresh

(

)

[virtual]

Puts in the canvas the image of the last drawn map.

Reimplemented from TdkDisplay.

void TdkMapDisplay::resize	(	int	xmin,
		int	ymin,
		int	xmax,
		int	ymax,
		TdkResizeMethods	met = rsmPreserveScalePos
	)			[virtual]

Change the drawble area of the canvas. Coordinates are defined in pixels.

Reimplemented from TdkDisplay.

double TdkMapDisplay::distanceMeters	(	double	xmin,
		double	ymin,
		double	xmax,
		double	ymax
	)			[virtual]

Calculates the distance between two given points.

Parameters:

	xmin	X world coordinate of point 1.
	ymin	Y world coordinate of point 1.
	xmax	X world coordinate of point 2.
	ymax	Y world coordinate of point 2.

Returns:

Distance between point 1 and point 2 in meters.

void TdkMapDisplay::handleVSEvent

(

TdkEvent &

event

)

[protected, virtual]

Reimplemented from TdkDisplay.

void TdkMapDisplay::handleVSEvent

(

TdkRedrawEvent &

event

)

[protected, virtual]

void TdkMapDisplay::handleVSEvent

(

TdkRefreshEvent &

event

)

[protected, virtual]

void TdkMapDisplay::handleVSEvent

(

TdkSelectObjectsEvent &

event

)

[protected, virtual]

void TdkMapDisplay::handleVSEvent

(

TdkSelectObjectsGIDVectorEvent &

event

)

[protected, virtual]

void TdkMapDisplay::handleVSEvent

(

TdkPickEvent &

event

)

[protected, virtual]

void TdkMapDisplay::handleVSEvent

(

TdkRedrawSelectedObjectsEvent &

event

)

[protected, virtual]

void TdkMapDisplay::handleVSEvent

(

TdkZoomAreaEvent &

event

)

[protected, virtual]

void TdkMapDisplay::handleVSEvent

(

TdkSelectedObjectsBBoxEvent &

event

)

[protected, virtual]

void TdkMapDisplay::handleVSEvent

(

TdkObjectIdentificationEvent &

event

)

[protected, virtual]

void TdkMapDisplay::handleVSEvent

(

TdkClearObjectIdentificationEvent &

event

)

[protected, virtual]

void TdkMapDisplay::handleVSEvent

(

TdkThemeObjectsIdentificationEvent &

event

)

[protected, virtual]

void TdkMapDisplay::handleVOEvent

(

TdkEvent &

event

)

[protected, virtual]

Reimplemented from TdkDisplay.

void TdkMapDisplay::handleVSEvent

(

TdkViewportPolylineFeedbackEvent &

event

)

[protected, virtual]

void TdkMapDisplay::box	(	bool	onlyVisible,
		double &	xmin,
		double &	ymin,
		double &	xmax,
		double &	ymax
	)			[protected, virtual]

Computes the bounding box of the spatial data associated to the MapView.

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

• D:/usuarios/rodrigof/svn/tdk/src/peer/components/control/displays/TdkMapDisplay.h
• D:/usuarios/rodrigof/svn/tdk/src/peer/components/control/displays/TdkMapDisplay.cpp

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