The QgsQuickMapSettings class encapsulates QgsMapSettings class to offer settings of configuration of map rendering via QML properties. More...

#include <qgsquickmapsettings.h>

Inheritance diagram for QgsQuickMapSettings:

[legend]

Signals
void	destinationCrsChanged ()
	CRS of destination coordinate reference system. More...

void	extentChanged ()
	Geographical coordinates of the rectangle that should be rendered. More...

void	layersChanged ()
	Set list of layers for map rendering. More...

void	mapUnitsPerPixelChanged ()
	Returns the distance in geographical coordinates that equals to one pixel in the map. More...

void	outputDpiChanged ()
	Output DPI used for conversion between real world units (e.g. More...

void	outputSizeChanged ()
	The size of the resulting map image. More...

void	projectChanged ()
	A project property should be used as a primary source of project all other components in the application. More...

void	rotationChanged ()
	The rotation of the resulting map image, in degrees clockwise. More...

void	visibleExtentChanged ()
	Returns the actual extent derived from requested extent that takes takes output image size into account. More...

Public Member Functions
	QgsQuickMapSettings (QObject *parent=nullptr)
	Create new map settings. More...

	~QgsQuickMapSettings ()=default

Q_INVOKABLE QPointF	coordinateToScreen (const QgsPoint &point) const
	Convert a map coordinate to screen pixel coordinates. More...

QgsCoordinateReferenceSystem	destinationCrs () const
	returns CRS of destination coordinate reference system More...

QgsRectangle	extent () const
	Returns geographical coordinates of the rectangle that should be rendered. More...

QList< QgsMapLayer * >	layers () const
	Gets list of layers for map rendering The layers are stored in the reverse order of how they are rendered (layer with index 0 will be on top) More...

QgsMapSettings	mapSettings () const
	Clone map settings. More...

double	mapUnitsPerPixel () const
	Returns the distance in geographical coordinates that equals to one pixel in the map. More...

double	outputDpi () const
	Returns DPI used for conversion between real world units (e.g. More...

QSize	outputSize () const
	Returns the size of the resulting map image. More...

QgsProject *	project () const
	A project property should be used as a primary source of project all other components in the application. More...

double	rotation () const
	The rotation of the resulting map image, in degrees clockwise. More...

Q_INVOKABLE QgsPoint	screenToCoordinate (const QPointF &point) const
	Convert a screen coordinate to a map coordinate. More...

Q_INVOKABLE void	setCenter (const QgsPoint &center)
	Move current map extent to have center point defined by center. More...

void	setDestinationCrs (const QgsCoordinateReferenceSystem &destinationCrs)
	sets destination coordinate reference system More...

void	setExtent (const QgsRectangle &extent)
	Set coordinates of the rectangle which should be rendered. More...

void	setLayers (const QList< QgsMapLayer *> &layers)
	Set list of layers for map rendering. More...

void	setOutputDpi (double outputDpi)
	Sets DPI used for conversion between real world units (e.g. mm) and pixels. More...

void	setOutputSize (const QSize &outputSize)
	Sets the size of the resulting map image. More...

void	setProject (QgsProject *project)
	A project property should be used as a primary source of project all other components in the application. More...

void	setRotation (double rotation)
	The rotation of the resulting map image, in degrees clockwise. More...

void	setTransformContext (const QgsCoordinateTransformContext &context)
	Sets the coordinate transform context, which stores various information regarding which datum transforms should be used when transforming points from a source to destination coordinate reference system. More...

Q_INVOKABLE QgsCoordinateTransformContext	transformContext () const
	Returns the coordinate transform context, which stores various information regarding which datum transforms should be used when transforming points from a source to destination coordinate reference system. More...

QgsRectangle	visibleExtent () const
	Returns the actual extent derived from requested extent that takes takes output image size into account. More...

Properties
QgsCoordinateReferenceSystem	destinationCrs
	CRS of destination coordinate reference system. More...

QgsRectangle	extent
	Geographical coordinates of the rectangle that should be rendered. More...

QList< QgsMapLayer * >	layers
	Set list of layers for map rendering. More...

double	mapUnitsPerPixel
	Returns the distance in geographical coordinates that equals to one pixel in the map. More...

double	outputDpi
	Output DPI used for conversion between real world units (e.g. More...

QSize	outputSize
	The size of the resulting map image. More...

QgsProject	project
	A project property should be used as a primary source of project all other components in the application. More...

double	rotation
	The rotation of the resulting map image, in degrees clockwise. More...

QgsRectangle	visibleExtent
	Returns the actual extent derived from requested extent that takes takes output image size into account. More...

Detailed Description

The QgsQuickMapSettings class encapsulates QgsMapSettings class to offer settings of configuration of map rendering via QML properties.

On top of QgsMapSettings functionality, when QgsProject is attached, it automatically loads its default settings from the project. QgsProject should be attached before it is read.

Note: QML Type: MapSettings

See also: QgsMapCanvas

Since: QGIS 3.2

Definition at line 46 of file qgsquickmapsettings.h.

Constructor & Destructor Documentation

◆ QgsQuickMapSettings()

QgsQuickMapSettings::QgsQuickMapSettings ( QObject * parent = nullptr )

Create new map settings.

Definition at line 25 of file qgsquickmapsettings.cpp.

◆ ~QgsQuickMapSettings()

QgsQuickMapSettings::~QgsQuickMapSettings ( )

default

Member Function Documentation

◆ coordinateToScreen()

QPointF QgsQuickMapSettings::coordinateToScreen ( const QgsPoint & point ) const

Convert a map coordinate to screen pixel coordinates.

Parameters

point A coordinate in map coordinates

Returns: A coordinate in pixel / screen space

Definition at line 112 of file qgsquickmapsettings.cpp.

◆ destinationCrs()

QgsCoordinateReferenceSystem QgsQuickMapSettings::destinationCrs ( ) const

returns CRS of destination coordinate reference system

◆ destinationCrsChanged

void QgsQuickMapSettings::destinationCrsChanged ( )

signal

CRS of destination coordinate reference system.

Automatically loaded from project on QgsProject::readProject

◆ extent()

QgsRectangle QgsQuickMapSettings::extent ( ) const

Returns geographical coordinates of the rectangle that should be rendered.

The actual visible extent used for rendering could be slightly different since the given extent may be expanded in order to fit the aspect ratio of output size. Use visibleExtent() to get the resulting extent.

◆ extentChanged

void QgsQuickMapSettings::extentChanged ( )

signal

Geographical coordinates of the rectangle that should be rendered.

The actual visible extent used for rendering could be slightly different since the given extent may be expanded in order to fit the aspect ratio of output size. Use QgsQuickMapSettings::visibleExtent to get the resulting extent.

Automatically loaded from project on QgsProject::readProject

◆ layers()

QList<QgsMapLayer *> QgsQuickMapSettings::layers ( ) const

Gets list of layers for map rendering The layers are stored in the reverse order of how they are rendered (layer with index 0 will be on top)

◆ layersChanged

void QgsQuickMapSettings::layersChanged ( )

signal

Set list of layers for map rendering.

The layers must be registered in QgsProject. The layers are stored in the reverse order of how they are rendered (layer with index 0 will be on top)

Note: Any non-spatial layers will be automatically stripped from the list (since they cannot be rendered!).

Not loaded automatically from the associated project

◆ mapSettings()

QgsMapSettings QgsQuickMapSettings::mapSettings ( ) const

Clone map settings.

Definition at line 128 of file qgsquickmapsettings.cpp.

◆ mapUnitsPerPixel()

double QgsQuickMapSettings::mapUnitsPerPixel ( ) const

Returns the distance in geographical coordinates that equals to one pixel in the map.

◆ mapUnitsPerPixelChanged

void QgsQuickMapSettings::mapUnitsPerPixelChanged ( )

signal

Returns the distance in geographical coordinates that equals to one pixel in the map.

◆ outputDpi()

double QgsQuickMapSettings::outputDpi ( ) const

Returns DPI used for conversion between real world units (e.g.

mm) and pixels Default value is 96

◆ outputDpiChanged

void QgsQuickMapSettings::outputDpiChanged ( )

signal

Output DPI used for conversion between real world units (e.g.

mm) and pixels

Automatically loaded from project on QgsProject::readProject

◆ outputSize()

QSize QgsQuickMapSettings::outputSize ( ) const

Returns the size of the resulting map image.

◆ outputSizeChanged

void QgsQuickMapSettings::outputSizeChanged ( )

signal

The size of the resulting map image.

Automatically loaded from project on QgsProject::readProject

◆ project()

QgsProject* QgsQuickMapSettings::project ( ) const

A project property should be used as a primary source of project all other components in the application.

QgsProject should be attached to QgsQuickMapSettings before it is read (QgsProject::read)

When project is read, map settings (CRS, extent, ...) are automatically set from its DOM.

◆ projectChanged

void QgsQuickMapSettings::projectChanged ( )

signal

A project property should be used as a primary source of project all other components in the application.

QgsProject should be attached to QgsQuickMapSettings before it is read (QgsProject::read)

When project is read, map settings (CRS, extent, ...) are automatically set from its DOM.

◆ rotation()

double QgsQuickMapSettings::rotation ( ) const

The rotation of the resulting map image, in degrees clockwise.

Map canvas rotation support is not implemented, 0 is used

◆ rotationChanged

void QgsQuickMapSettings::rotationChanged ( )

signal

The rotation of the resulting map image, in degrees clockwise.

Map canvas rotation support is not implemented, 0 is used

◆ screenToCoordinate()

QgsPoint QgsQuickMapSettings::screenToCoordinate ( const QPointF & point ) const

Convert a screen coordinate to a map coordinate.

Parameters

point A coordinate in pixel / screen coordinates

Returns: A coordinate in map coordinates

Definition at line 119 of file qgsquickmapsettings.cpp.

◆ setCenter()

void QgsQuickMapSettings::setCenter ( const QgsPoint & center )

Move current map extent to have center point defined by center.

Definition at line 89 of file qgsquickmapsettings.cpp.

◆ setDestinationCrs()

void QgsQuickMapSettings::setDestinationCrs ( const QgsCoordinateReferenceSystem & destinationCrs )

sets destination coordinate reference system

Definition at line 166 of file qgsquickmapsettings.cpp.

◆ setExtent()

void QgsQuickMapSettings::setExtent ( const QgsRectangle & extent )

Set coordinates of the rectangle which should be rendered.

The actual visible extent used for rendering could be slightly different since the given extent may be expanded in order to fit the aspect ratio of output size. Use visibleExtent() to get the resulting extent.

Definition at line 80 of file qgsquickmapsettings.cpp.

◆ setLayers()

void QgsQuickMapSettings::setLayers ( const QList< QgsMapLayer *> & layers )

Set list of layers for map rendering.

The layers must be registered in QgsProject. The layers are stored in the reverse order of how they are rendered (layer with index 0 will be on top)

Note: Any non-spatial layers will be automatically stripped from the list (since they cannot be rendered!).

Definition at line 180 of file qgsquickmapsettings.cpp.

◆ setOutputDpi()

void QgsQuickMapSettings::setOutputDpi ( double outputDpi )

Sets DPI used for conversion between real world units (e.g. mm) and pixels.

Definition at line 152 of file qgsquickmapsettings.cpp.

◆ setOutputSize()

void QgsQuickMapSettings::setOutputSize ( const QSize & outputSize )

Sets the size of the resulting map image.

Definition at line 138 of file qgsquickmapsettings.cpp.

◆ setProject()

void QgsQuickMapSettings::setProject ( QgsProject * project )

A project property should be used as a primary source of project all other components in the application.

QgsProject should be attached to QgsQuickMapSettings before it is read (QgsProject::read)

When project is read, map settings (CRS, extent, ...) are automatically set from its DOM.

Definition at line 37 of file qgsquickmapsettings.cpp.

◆ setRotation()

void QgsQuickMapSettings::setRotation ( double rotation )

The rotation of the resulting map image, in degrees clockwise.

Map canvas rotation support is not implemented, 0 is used

Definition at line 213 of file qgsquickmapsettings.cpp.

◆ setTransformContext()

void QgsQuickMapSettings::setTransformContext ( const QgsCoordinateTransformContext & context )

Sets the coordinate transform context, which stores various information regarding which datum transforms should be used when transforming points from a source to destination coordinate reference system.

See also: transformContext()

Since: QGIS 3.0

◆ transformContext()

QgsCoordinateTransformContext QgsQuickMapSettings::transformContext ( ) const

Returns the coordinate transform context, which stores various information regarding which datum transforms should be used when transforming points from a source to destination coordinate reference system.

See also: setTransformContext()

Since: QGIS 3.0

Definition at line 70 of file qgsquickmapsettings.cpp.

◆ visibleExtent()

QgsRectangle QgsQuickMapSettings::visibleExtent ( ) const

Returns the actual extent derived from requested extent that takes takes output image size into account.

◆ visibleExtentChanged

void QgsQuickMapSettings::visibleExtentChanged ( )

signal

Returns the actual extent derived from requested extent that takes takes output image size into account.

Property Documentation

◆ destinationCrs

QgsCoordinateReferenceSystem QgsQuickMapSettings::destinationCrs

readwrite

CRS of destination coordinate reference system.

Automatically loaded from project on QgsProject::readProject

Definition at line 98 of file qgsquickmapsettings.h.

◆ extent

QgsRectangle QgsQuickMapSettings::extent

readwrite

Geographical coordinates of the rectangle that should be rendered.

The actual visible extent used for rendering could be slightly different since the given extent may be expanded in order to fit the aspect ratio of output size. Use QgsQuickMapSettings::visibleExtent to get the resulting extent.

Automatically loaded from project on QgsProject::readProject

Definition at line 67 of file qgsquickmapsettings.h.

◆ layers

QList< QgsMapLayer * > QgsQuickMapSettings::layers

readwrite

Set list of layers for map rendering.

The layers must be registered in QgsProject. The layers are stored in the reverse order of how they are rendered (layer with index 0 will be on top)

Note: Any non-spatial layers will be automatically stripped from the list (since they cannot be rendered!).

Not loaded automatically from the associated project

Definition at line 108 of file qgsquickmapsettings.h.

◆ mapUnitsPerPixel

double QgsQuickMapSettings::mapUnitsPerPixel

read

Returns the distance in geographical coordinates that equals to one pixel in the map.

Definition at line 71 of file qgsquickmapsettings.h.

◆ outputDpi

double QgsQuickMapSettings::outputDpi

readwrite

Output DPI used for conversion between real world units (e.g.

mm) and pixels

Automatically loaded from project on QgsProject::readProject

Definition at line 91 of file qgsquickmapsettings.h.

◆ outputSize

QSize QgsQuickMapSettings::outputSize

readwrite

The size of the resulting map image.

Automatically loaded from project on QgsProject::readProject

Definition at line 84 of file qgsquickmapsettings.h.

◆ project

QgsProject * QgsQuickMapSettings::project

readwrite

A project property should be used as a primary source of project all other components in the application.

QgsProject should be attached to QgsQuickMapSettings before it is read (QgsProject::read)

When project is read, map settings (CRS, extent, ...) are automatically set from its DOM.

Definition at line 57 of file qgsquickmapsettings.h.

◆ rotation

double QgsQuickMapSettings::rotation

readwrite

The rotation of the resulting map image, in degrees clockwise.

Map canvas rotation support is not implemented, 0 is used

Definition at line 77 of file qgsquickmapsettings.h.

◆ visibleExtent

QgsRectangle QgsQuickMapSettings::visibleExtent

read

Returns the actual extent derived from requested extent that takes takes output image size into account.

Definition at line 69 of file qgsquickmapsettings.h.

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

/tmp/buildd/qgis-3.6.0+99unstable/src/quickgui/qgsquickmapsettings.h
/tmp/buildd/qgis-3.6.0+99unstable/src/quickgui/qgsquickmapsettings.cpp

Signals

Public Member Functions

Properties

Detailed Description

Constructor & Destructor Documentation

◆ QgsQuickMapSettings()

◆ ~QgsQuickMapSettings()

Member Function Documentation

◆ coordinateToScreen()

◆ destinationCrs()

◆ destinationCrsChanged

◆ extent()

◆ extentChanged

◆ layers()

◆ layersChanged

◆ mapSettings()

◆ mapUnitsPerPixel()

◆ mapUnitsPerPixelChanged

◆ outputDpi()

◆ outputDpiChanged

◆ outputSize()

◆ outputSizeChanged

◆ project()

◆ projectChanged

◆ rotation()

◆ rotationChanged

◆ screenToCoordinate()

◆ setCenter()

◆ setDestinationCrs()

◆ setExtent()

◆ setLayers()

◆ setOutputDpi()

◆ setOutputSize()

◆ setProject()

◆ setRotation()

◆ setTransformContext()

◆ transformContext()

◆ visibleExtent()

◆ visibleExtentChanged

Property Documentation

◆ destinationCrs

◆ extent

◆ layers

◆ mapUnitsPerPixel

◆ outputDpi

◆ outputSize

◆ project

◆ rotation

◆ visibleExtent