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4f18701d31
Those two fields are present in the vector layer properties. It was possible to set a minScale bigger than the maxScale. Now, the maxScale is forced to minScale if the user tries to set it to a lower value.
58 lines
1.8 KiB
Plaintext
58 lines
1.8 KiB
Plaintext
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/** \ingroup gui
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* A combobox which lets the user select map scale from predefined list
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* and highlights nearest to current scale value
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**/
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class QgsScaleWidget : QWidget
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{
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%TypeHeaderCode
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#include <qgsscalewidget.h>
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%End
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public:
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QgsScaleWidget( QWidget* parent /TransferThis/ = 0 );
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~QgsScaleWidget();
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//! shows a button to set the scale to the current scale of the map canvas next to the combobox
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//! @note the map canvas must be defined to show the button
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void setShowCurrentScaleButton( bool showCurrentScaleButton );
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bool showCurrentScaleButton();
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//! set the map canvas associated to the current button
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void setMapCanvas( QgsMapCanvas* canvas );
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//! Function to read the selected scale as text
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QString scaleString();
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//! Function to set the selected scale from text
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bool setScaleString( const QString& scaleTxt );
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//! Function to read the selected scale as double
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double scale() const;
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//! Function to set the selected scale from double
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void setScale( double scale );
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//! Function to read the min scale
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double minScale() const;
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//! Helper function to convert a double to scale string
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// Performs rounding, so an exact representation is not to
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// be expected.
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static QString toString( double scale );
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//! Helper function to convert a scale string to double
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static double toDouble( const QString& scaleString, bool *ok = 0 );
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public slots:
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void updateScales( const QStringList &scales = QStringList() );
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//! assign the current scale from the map canvas
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void setScaleFromCanvas();
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//! Function to set the min scale
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void setMinScale( double scale );
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signals:
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//! Signal is emitted when *user* has finished editing/selecting a new scale.
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void scaleChanged( double scale );
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};
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