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This commit is contained in:
Nyall Dawson 2016-03-10 07:43:25 +11:00
parent 01f615d0d0
commit 3b4638ab83
7 changed files with 73 additions and 30 deletions
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5
python/core/layertree/qgslayertreemodel.sip
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@ -230,6 +230,11 @@ class QgsLayerTreeModel : QAbstractItemModel
//! emit dataChanged() for layer tree node items
void recursivelyEmitDataChanged( const QModelIndex& index = QModelIndex() );
/** Updates layer data for scale dependent layers, should be called when map scale changes.
* Emits dataChanged() for all scale dependent layers.
* @note added in QGIS 2.16
*/
void refreshScaleBasedLayers( const QModelIndex& index = QModelIndex() );
static const QIcon& iconGroup();

28
python/core/qgsmaplayer.sip
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@ -492,34 +492,42 @@ class QgsMapLayer : QObject
*/
QgsMapLayerStyleManager* styleManager() const;
/**
/** Tests whether the layer should be visible at the specified scale.
* @param scale scale denominator to test
* @returns true if the layer is visible at the given scale.
* @note added in QGIS 2.16
* @see minimumScale()
* @see maximumScale()
* @see hasScaleBasedVisibility()
*/
bool isInScaleRange( double scale ) const;
/** Returns the minimum scale denominator at which the layer is visible.
* Scale based visibility is only used if hasScaleBasedVisibility is true.
* @returns minimum scale denominator at which the layer will render
* @see setMinimumScale
* @see maximumScale
* @see hasScaleBasedVisibility
* @see setMinimumScale()
* @see maximumScale()
* @see hasScaleBasedVisibility()
* @see isInScaleRange()
*/
float minimumScale() const;
/** Returns the maximum scale denominator at which the layer is visible.
* Scale based visibility is only used if hasScaleBasedVisibility is true.
* @returns minimum scale denominator at which the layer will render
* @see setMaximumScale
* @see minimumScale
* @see hasScaleBasedVisibility
* @see setMaximumScale()
* @see minimumScale()
* @see hasScaleBasedVisibility()
* @see isInScaleRange()
*/
float maximumScale() const;
/** Returns whether scale based visibility is enabled for the layer.
* @returns true if scale based visibility is enabled
* @see minimumScale
* @see maximumScale
* @see setScaleBasedVisibility
* @see minimumScale()
* @see maximumScale()
* @see setScaleBasedVisibility()
* @see isInScaleRange()
*/
bool hasScaleBasedVisibility() const;

3
src/app/qgisapp.h
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@ -742,8 +742,9 @@ class APP_EXPORT QgisApp : public QMainWindow, private Ui::MainWindow
void removeLayer();
//! Duplicate map layer(s) in legend
void duplicateLayers( const QList<QgsMapLayer *>& lyrList = QList<QgsMapLayer *>() );
//! Set Scale visibility of selected layers
//! Set scale visibility of selected layers
void setLayerScaleVisibility();
//! Zoom to nearest scale such that current layer is visible
void zoomToLayerScale();
//! Set CRS of a layer
void setLayerCRS();

4
src/app/qgsapplayertreeviewmenuprovider.cpp
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@ -107,10 +107,10 @@ QMenu* QgsAppLayerTreeViewMenuProvider::createContextMenu()
menu->addAction( tr( "&Set Layer Scale Visibility" ), QgisApp::instance(), SLOT( setLayerScaleVisibility() ) );
if ( !vlayer->isInScaleRange( mCanvas->scale() ) )
menu->addAction( tr( "&Zoom to Layer Scale" ), QgisApp::instance(), SLOT( zoomToLayerScale() ) );
menu->addAction( tr( "Zoom to Layer Scale" ), QgisApp::instance(), SLOT( zoomToLayerScale() ) );
// set layer crs
menu->addAction( QgsApplication::getThemeIcon( "/mActionSetCRS.png" ), tr( "&Set Layer CRS" ), QgisApp::instance(), SLOT( setLayerCRS() ) );
menu->addAction( QgsApplication::getThemeIcon( "/mActionSetCRS.png" ), tr( "Set Layer CRS" ), QgisApp::instance(), SLOT( setLayerCRS() ) );
// assign layer crs to project
menu->addAction( QgsApplication::getThemeIcon( "/mActionSetProjectCRS.png" ), tr( "Set &Project CRS from Layer" ), QgisApp::instance(), SLOT( setProjectCRSFromLayer() ) );

6
src/core/layertree/qgslayertreemodel.h
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@ -254,7 +254,11 @@ class CORE_EXPORT QgsLayerTreeModel : public QAbstractItemModel
//! emit dataChanged() for layer tree node items
void recursivelyEmitDataChanged( const QModelIndex& index = QModelIndex() );
//! emit dataChanged() for scale dependent layers
/** Updates layer data for scale dependent layers, should be called when map scale changes.
* Emits dataChanged() for all scale dependent layers.
* @note added in QGIS 2.16
*/
void refreshScaleBasedLayers( const QModelIndex& index = QModelIndex() );
static const QIcon& iconGroup();

28
src/core/qgsmaplayer.h
View File

@ -511,34 +511,42 @@ class CORE_EXPORT QgsMapLayer : public QObject
*/
QgsMapLayerStyleManager* styleManager() const;
/**
/** Tests whether the layer should be visible at the specified scale.
* @param scale scale denominator to test
* @returns true if the layer is visible at the given scale.
* @note added in QGIS 2.16
* @see minimumScale()
* @see maximumScale()
* @see hasScaleBasedVisibility()
*/
bool isInScaleRange( double scale ) const;
/** Returns the minimum scale denominator at which the layer is visible.
* Scale based visibility is only used if hasScaleBasedVisibility is true.
* @returns minimum scale denominator at which the layer will render
* @see setMinimumScale
* @see maximumScale
* @see hasScaleBasedVisibility
* @see setMinimumScale()
* @see maximumScale()
* @see hasScaleBasedVisibility()
* @see isInScaleRange()
*/
float minimumScale() const;
/** Returns the maximum scale denominator at which the layer is visible.
* Scale based visibility is only used if hasScaleBasedVisibility is true.
* @returns minimum scale denominator at which the layer will render
* @see setMaximumScale
* @see minimumScale
* @see hasScaleBasedVisibility
* @see setMaximumScale()
* @see minimumScale()
* @see hasScaleBasedVisibility()
* @see isInScaleRange()
*/
float maximumScale() const;
/** Returns whether scale based visibility is enabled for the layer.
* @returns true if scale based visibility is enabled
* @see minimumScale
* @see maximumScale
* @see setScaleBasedVisibility
* @see minimumScale()
* @see maximumScale()
* @see setScaleBasedVisibility()
* @see isInScaleRange()
*/
bool hasScaleBasedVisibility() const;

29
tests/src/core/testqgsmaplayer.cpp
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@ -62,8 +62,10 @@ class TestQgsMapLayer : public QObject
void setBlendMode();
void isInScaleRange_data();
void isInScaleRange();
private:
QgsMapLayer * mpLayer;
};
@ -119,17 +121,32 @@ void TestQgsMapLayer::setBlendMode()
QCOMPARE( mpLayer->blendMode(), QPainter::CompositionMode_Screen );
}
void TestQgsMapLayer::isInScaleRange_data()
{
QTest::addColumn<float>( "scale" );
QTest::addColumn<bool>( "isInScale" );
QTest::newRow( "in the middle" ) << 3000.0f << true;
QTest::newRow( "too low" ) << 1000.0f << false;
QTest::newRow( "too high" ) << 6000.0f << false;
QTest::newRow( "max is not inclusive" ) << 5000.0f << false;
QTest::newRow( "min is inclusive" ) << 2500.0f << true;
QTest::newRow( "min is inclusive even with conversion errors" ) << static_cast< float >( 1.0f / (( float )1.0 / 2500.0 ) ) << true;
}
void TestQgsMapLayer::isInScaleRange()
{
QFETCH( float, scale );
QFETCH( bool, isInScale );
mpLayer->setMinimumScale( 2500.0f );
mpLayer->setMaximumScale( 5000.0f );
mpLayer->setScaleBasedVisibility( true );
QCOMPARE( mpLayer->isInScaleRange( 3000.0f ), true ); // In the middle
QCOMPARE( mpLayer->isInScaleRange( 1000.0f ), false ); // Too low
QCOMPARE( mpLayer->isInScaleRange( 6000.0f ), false ); // Too high
QCOMPARE( mpLayer->isInScaleRange( 5000.0f ), false ); // Max is not inclusive
QCOMPARE( mpLayer->isInScaleRange( 2500.0f ), true ); // Min is inclusive
QCOMPARE( mpLayer->isInScaleRange( 1.0f / (( float )1.0 / 2500.0 ) ), true ); // Min is inclusive even with conversion errors
QCOMPARE( mpLayer->isInScaleRange( scale ), isInScale );
//always in scale range if scale based visibility is false
mpLayer->setScaleBasedVisibility( false );
QCOMPARE( mpLayer->isInScaleRange( scale ), true );
}
QTEST_MAIN( TestQgsMapLayer )