QgsSnapToGridCanvasItem class

Shows a grid on the map canvas given a spatial resolution.

Base classes

class QgsMapCanvasItem: An abstract class for items that can be placed on the map canvas.

QgsSnapToGridCanvasItem(QgsMapCanvas* mapCanvas): Will automatically be added to the mapCanvas.

auto crs() const -> QgsCoordinateReferenceSystem: The CRS in which the grid should be calculated.
auto enabled() const -> bool: Enable this item.
void paint(QPainter* painter) override: function to be implemented by derived classes
auto point() const -> QgsPointXY: A point that will be highlighted on the map canvas.
auto precision() const -> double: The resolution of the grid in map units.
void setCrs(const QgsCoordinateReferenceSystem& crs): The CRS in which the grid should be calculated.
void setEnabled(bool enabled): Enable this item.
void setPoint(const QgsPointXY& point): A point that will be highlighted on the map canvas.
void setPrecision(double precision): The resolution of the grid in map units.

The CRS in which the grid should be calculated.

By default will be an invalid QgsCoordinateReferenceSystem and as such equal to the CRS of the map canvas.

Enable this item.

It will be hidden if disabled.

A point that will be highlighted on the map canvas.

The point needs to be in map coordinates. The closest point on the grid will be highlighted.

The resolution of the grid in map units.

If a crs has been specified it will be in CRS units.