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[FEATURE] Allow creation of color ramps in color ramp combo box.
git-svn-id: http://svn.osgeo.org/qgis/trunk@14421 c8812cc2-4d05-0410-92ff-de0c093fc19c
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wonder
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Oct 20, 2010
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| #include "qgscolorrampcombobox.h" | ||
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| #include "qgssymbollayerv2utils.h" | ||
| #include "qgsvectorcolorrampv2.h" | ||
| #include "qgsstylev2.h" | ||
| #include "qgsstylev2managerdialog.h" | ||
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| QSize QgsColorRampComboBox::rampIconSize( 50, 16 ); | ||
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| QgsColorRampComboBox::QgsColorRampComboBox( QWidget *parent ) : | ||
| QComboBox( parent ), mStyle( NULL ), mSourceColorRamp( NULL ) | ||
| { | ||
| } | ||
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| QgsColorRampComboBox::~QgsColorRampComboBox() | ||
| { | ||
| delete mSourceColorRamp; | ||
| } | ||
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| void QgsColorRampComboBox::populate( QgsStyleV2* style ) | ||
| { | ||
| if( count() != 0 ) | ||
| return; // already populated! | ||
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| mStyle = style; | ||
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| setIconSize( rampIconSize ); | ||
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| QStringList rampNames = mStyle->colorRampNames(); | ||
| for( QStringList::iterator it = rampNames.begin(); it != rampNames.end(); ++it ) | ||
| { | ||
| QgsVectorColorRampV2* ramp = style->colorRamp( *it ); | ||
| QIcon icon = QgsSymbolLayerV2Utils::colorRampPreviewIcon( ramp, rampIconSize ); | ||
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| addItem( icon, *it ); | ||
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| delete ramp; | ||
| } | ||
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| addItem( tr( "New color ramp..." ) ); | ||
| connect( this, SIGNAL( currentIndexChanged( int ) ), SLOT( colorRampChanged( int ) ) ); | ||
| } | ||
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| QgsVectorColorRampV2* QgsColorRampComboBox::currentColorRamp() | ||
| { | ||
| QString rampName = currentText(); | ||
| if( rampName == "[source]" && mSourceColorRamp ) | ||
| return mSourceColorRamp->clone(); | ||
| else | ||
| return mStyle->colorRamp( rampName ); | ||
| } | ||
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| void QgsColorRampComboBox::setSourceColorRamp( QgsVectorColorRampV2* sourceRamp ) | ||
| { | ||
| mSourceColorRamp = sourceRamp->clone(); | ||
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| QIcon icon = QgsSymbolLayerV2Utils::colorRampPreviewIcon( mSourceColorRamp, rampIconSize ); | ||
| if( itemText( 0 ) == "[source]" ) | ||
| setItemIcon( 0, icon ); | ||
| else | ||
| insertItem( 0, icon, "[source]" ); | ||
| setCurrentIndex( 0 ); | ||
| } | ||
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| void QgsColorRampComboBox::colorRampChanged( int index ) | ||
| { | ||
| if( index != count() - 1 ) | ||
| return; | ||
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| // last item: "new color ramp..." | ||
| QString rampName = QgsStyleV2ManagerDialog::addColorRampStatic( this, mStyle ); | ||
| if( rampName.isEmpty() ) | ||
| return; | ||
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| // put newly added ramp into the combo | ||
| QgsVectorColorRampV2* ramp = mStyle->colorRamp( rampName ); | ||
| QIcon icon = QgsSymbolLayerV2Utils::colorRampPreviewIcon( ramp, rampIconSize ); | ||
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| blockSignals( true ); // avoid calling this method again! | ||
| insertItem( index, icon, rampName ); | ||
| blockSignals( false ); | ||
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| delete ramp; | ||
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| // ... and set it as active | ||
| setCurrentIndex( index ); | ||
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| // make sure the color ramp is stored | ||
| mStyle->save(); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,39 @@ | ||
| #ifndef QGSCOLORRAMPCOMBOBOX_H | ||
| #define QGSCOLORRAMPCOMBOBOX_H | ||
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| #include <QComboBox> | ||
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| class QgsStyleV2; | ||
| class QgsVectorColorRampV2; | ||
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| class QgsColorRampComboBox : public QComboBox | ||
| { | ||
| Q_OBJECT | ||
| public: | ||
| explicit QgsColorRampComboBox( QWidget *parent = 0 ); | ||
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| ~QgsColorRampComboBox(); | ||
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| //! initialize the combo box with color ramps from the style | ||
| void populate( QgsStyleV2* style ); | ||
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| //! add/select color ramp which was used previously by the renderer | ||
| void setSourceColorRamp( QgsVectorColorRampV2* sourceRamp ); | ||
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| //! return new instance of the current color ramp or NULL if there is no active color ramp | ||
| QgsVectorColorRampV2* currentColorRamp(); | ||
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| static QSize rampIconSize; | ||
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| signals: | ||
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| public slots: | ||
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| void colorRampChanged( int index ); | ||
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| protected: | ||
| QgsStyleV2* mStyle; | ||
| QgsVectorColorRampV2* mSourceColorRamp; // owns the copy | ||
| }; | ||
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| #endif // QGSCOLORRAMPCOMBOBOX_H |
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