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/**
* Collapsible group box for configuration of extent, typically for a save operation.
*
* Besides allowing the user to enter the extent manually, it comes with options to use
* original extent or extent defined by the current view in map canvas.
*
* When using the widget, make sure to call setOriginalExtent(), setCurrentExtent() and setOutputCrs() during initialization.
*
* @note added in 2.4
*/
class QgsExtentGroupBox : QgsCollapsibleGroupBox
{
%TypeHeaderCode
#include <qgsextentgroupbox.h>
%End
public:
explicit QgsExtentGroupBox( QWidget* parent = 0 );
enum ExtentState
{
OriginalExtent, //!< layer's extent
CurrentExtent, //!< map canvas extent
UserExtent, //!< extent manually entered/modified by the user
};
//! Setup original extent - should be called as part of initialization
void setOriginalExtent( const QgsRectangle& originalExtent, const QgsCoordinateReferenceSystem& originalCrs );
QgsRectangle originalExtent() const;
const QgsCoordinateReferenceSystem& originalCrs() const;
//! Setup current extent - should be called as part of initialization (or whenever current extent changes)
void setCurrentExtent( const QgsRectangle& currentExtent, const QgsCoordinateReferenceSystem& currentCrs );
QgsRectangle currentExtent() const;
const QgsCoordinateReferenceSystem& currentCrs() const;
//! Set the output CRS - may need to be used for transformation from original/current extent.
//! Should be called as part of initialization and whenever the the output CRS is changed
void setOutputCrs( const QgsCoordinateReferenceSystem& outputCrs );
//! Get the resulting extent - in output CRS coordinates
QgsRectangle outputExtent() const;
QgsExtentGroupBox::ExtentState extentState() const;
public slots:
//! set output extent to be the same as original extent (may be transformed to output CRS)
void setOutputExtentFromOriginal();
//! set output extent to be the same as current extent (may be transformed to output CRS)
void setOutputExtentFromCurrent();
//! set output extent to custom extent (may be transformed to outut CRS)
void setOutputExtentFromUser( const QgsRectangle& extent, const QgsCoordinateReferenceSystem& crs );
signals:
//! emitted when extent is changed
void extentChanged( const QgsRectangle& r );
protected slots:
void on_mXMinLineEdit_textEdited( const QString & );
void on_mXMaxLineEdit_textEdited( const QString & );
void on_mYMinLineEdit_textEdited( const QString & );
void on_mYMaxLineEdit_textEdited( const QString & );
protected:
void setOutputExtent( const QgsRectangle& r, const QgsCoordinateReferenceSystem& srcCrs, QgsExtentGroupBox::ExtentState state );
void setOutputExtentFromLineEdit();
void updateTitle();
};
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