17#include "moc_qgsstylemodel.cpp"
57 mTargetScreenProperties = properties;
62 return mTargetScreenProperties;
71 : QAbstractItemModel( parent )
87void QgsStyleModel::initStyleModel()
92 mEntityNames.insert( entity, mStyle->
allNames( entity ) );
116 if ( sIconGenerator )
129 switch ( entityType )
136 name = mEntityNames[ entityType ].value(
index.row() - offsetForEntity( entityType ) );
142 case Qt::DisplayRole:
143 case Qt::ToolTipRole:
146 switch (
index.column() )
150 const QStringList tags = mStyle->
tagsOfSymbol( entityType, name );
152 if ( role == Qt::ToolTipRole )
154 QString tooltip = QStringLiteral(
"<h3>%1</h3><p><i>%2</i>" ).arg( name,
155 tags.count() > 0 ? tags.join( QLatin1String(
", " ) ) : tr(
"Not tagged" ) );
159 for (
auto it = mTargetScreenProperties.constBegin(); it != mTargetScreenProperties.constEnd(); ++it )
161 if ( !maxDevicePixelRatioScreen.
isValid() || it->devicePixelRatio() > maxDevicePixelRatioScreen.
devicePixelRatio() )
162 maxDevicePixelRatioScreen = *it;
165 switch ( entityType )
170 std::unique_ptr< QgsSymbol > symbol( mStyle->
symbol( name ) );
173 int width =
static_cast< int >(
Qgis::UI_SCALE_FACTOR * QFontMetrics(
data(
index, Qt::FontRole ).value< QFont >() ).horizontalAdvance(
'X' ) * 23 );
174 int height =
static_cast< int >( width / 1.61803398875 );
177 QBuffer buffer( &
data );
178 pm.save( &buffer,
"PNG", 100 );
179 tooltip += QStringLiteral(
"<p><img src='data:image/png;base64, %3' width=\"%4\">" ).arg( QString(
data.toBase64() ) ).arg( width );
186 int width =
static_cast< int >(
Qgis::UI_SCALE_FACTOR * QFontMetrics(
data(
index, Qt::FontRole ).value< QFont >() ).horizontalAdvance(
'X' ) * 23 );
187 int height =
static_cast< int >( width / 1.61803398875 );
191 QBuffer buffer( &
data );
192 pm.save( &buffer,
"PNG", 100 );
193 tooltip += QStringLiteral(
"<p><img src='data:image/png;base64, %3' width=\"%4\">" ).arg( QString(
data.toBase64() ) ).arg( width );
199 int width =
static_cast< int >(
Qgis::UI_SCALE_FACTOR * QFontMetrics(
data(
index, Qt::FontRole ).value< QFont >() ).horizontalAdvance(
'X' ) * 23 );
200 int height =
static_cast< int >( width / 1.61803398875 );
204 QBuffer buffer( &
data );
205 pm.save( &buffer,
"PNG", 100 );
206 tooltip += QStringLiteral(
"<p><img src='data:image/png;base64, %3' width=\"%4\">" ).arg( QString(
data.toBase64() ) ).arg( width );
212 int width =
static_cast< int >(
Qgis::UI_SCALE_FACTOR * QFontMetrics(
data(
index, Qt::FontRole ).value< QFont >() ).horizontalAdvance(
'X' ) * 23 );
213 int height =
static_cast< int >( width / 1.61803398875 );
220 QBuffer buffer( &
data );
221 pm.save( &buffer,
"PNG", 100 );
222 tooltip += QStringLiteral(
"<p><img src='data:image/png;base64, %3' width=\"%4\">" ).arg( QString(
data.toBase64() ) ).arg( width );
241 return mStyle->
tagsOfSymbol( entityType, name ).join( QLatin1String(
", " ) );
249 case Qt::DecorationRole:
254 if ( !mExpressionContext )
260 mExpressionContext = std::make_unique< QgsExpressionContext >();
264 switch (
index.column() )
267 switch ( entityType )
272 QIcon icon = mIconCache[ entityType ].value( name );
273 if ( !icon.isNull() )
276 std::unique_ptr< QgsSymbol > symbol( mStyle->
symbol( name ) );
279 for (
auto it = mTargetScreenProperties.constBegin(); it != mTargetScreenProperties.constEnd(); ++it )
281 if ( mAdditionalSizes.isEmpty() )
284 for (
const QSize &s : mAdditionalSizes )
291 mIconCache[ entityType ].insert( name, icon );
297 QIcon icon = mIconCache[ entityType ].value( name );
298 if ( !icon.isNull() )
301 std::unique_ptr< QgsColorRamp > ramp( mStyle->
colorRamp( name ) );
304 if ( mAdditionalSizes.isEmpty() )
306 for (
const QSize &s : mAdditionalSizes )
312 mIconCache[ entityType ].insert( name, icon );
319 QIcon icon = mIconCache[ entityType ].value( name );
320 if ( !icon.isNull() )
324 for (
auto it = mTargetScreenProperties.constBegin(); it != mTargetScreenProperties.constEnd(); ++it )
326 if ( mAdditionalSizes.isEmpty() )
328 for (
const QSize &s : mAdditionalSizes )
333 mIconCache[ entityType ].insert( name, icon );
340 QIcon icon = mIconCache[ entityType ].value( name );
341 if ( !icon.isNull() )
345 for (
auto it = mTargetScreenProperties.constBegin(); it != mTargetScreenProperties.constEnd(); ++it )
347 if ( mAdditionalSizes.isEmpty() )
349 for (
const QSize &s : mAdditionalSizes )
354 mIconCache[ entityType ].insert( name, icon );
361 QIcon icon = mIconCache[ entityType ].value( name );
362 if ( !icon.isNull() )
368 for (
auto it = mTargetScreenProperties.constBegin(); it != mTargetScreenProperties.constEnd(); ++it )
372 if ( mAdditionalSizes.isEmpty() )
375 for (
const QSize &s : mAdditionalSizes )
382 mIconCache[ entityType ].insert( name, icon );
392 QIcon icon = mIconCache[ entityType ].value( name );
393 if ( !icon.isNull() )
396 if ( sIconGenerator && !mPending3dSymbolIcons.contains( name ) )
398 mPending3dSymbolIcons.insert( name );
403 if ( mAdditionalSizes.isEmpty() )
405 for (
const QSize &s : mAdditionalSizes )
409 mIconCache[ entityType ].insert( name, icon );
435 return mStyle->
isFavorite( entityType, name );
439 switch ( entityType )
444 return symbol ?
static_cast< int >( symbol->
type() ) : QVariant();
463 switch ( entityType )
482 switch ( entityType )
488 res.reserve( types.size() );
491 res << static_cast< int >( type );
512 return mStyle->
name();
527 if (
index.row() < 0 ||
index.row() >=
rowCount( QModelIndex() ) || role != Qt::EditRole )
530 switch (
index.column() )
536 switch ( entityType )
543 name = mEntityNames[ entityType ].value(
index.row() - offsetForEntity( entityType ) );
547 const QString newName = value.toString();
548 return mStyle->
renameEntity( entityType, name, newName );
563 Qt::ItemFlags
flags = QAbstractItemModel::flags(
index );
566 return flags | Qt::ItemIsEditable;
576 return headerDataStatic( section, orientation, role );
579QVariant QgsStyleModel::headerDataStatic(
int section, Qt::Orientation orientation,
int role )
581 if ( role == Qt::DisplayRole )
583 if ( orientation == Qt::Vertical )
585 return QVariant( section );
592 return QVariant( tr(
"Name" ) );
595 return QVariant( tr(
"Tags" ) );
610 if ( !hasIndex( row, column,
parent ) )
611 return QModelIndex();
615 return createIndex( row, column );
618 return QModelIndex();
624 return QModelIndex();
633 count += mEntityNames[ type ].size();
646 if ( mAdditionalSizes.contains( size ) )
649 mAdditionalSizes << size;
651 if ( sIconGenerator )
659 if ( mTargetScreenProperties.contains( properties ) )
662 mTargetScreenProperties.insert( properties );
664 if ( sIconGenerator )
672 sIconGenerator = generator;
678 mIconCache[ type ].remove( name );
679 const QStringList newSymbolNames = mStyle->
allNames( type );
682 const int newNameIndex = newSymbolNames.indexOf( name );
683 if ( newNameIndex < 0 )
686 const int offset = offsetForEntity( type );
687 beginInsertRows( QModelIndex(), newNameIndex + offset, newNameIndex + offset );
688 mEntityNames[ type ] = newSymbolNames;
694 mIconCache[ type ].remove( name );
695 const QStringList oldSymbolNames = mEntityNames[ type ];
696 const QStringList newSymbolNames = mStyle->
allNames( type );
699 const int oldNameIndex = oldSymbolNames.indexOf( name );
700 if ( oldNameIndex < 0 )
703 const int offset = offsetForEntity( type );
704 beginRemoveRows( QModelIndex(), oldNameIndex + offset, oldNameIndex + offset );
705 mEntityNames[ type ] = newSymbolNames;
711 mIconCache[ type ].remove( name );
713 const int offset = offsetForEntity( type );
714 QModelIndex i =
index( offset + mEntityNames[ type ].indexOf( name ),
Tags );
715 emit dataChanged( i, i, QVector< int >() << Qt::DecorationRole );
720 const int offset = offsetForEntity( type );
721 QModelIndex i =
index( offset + mEntityNames[ type ].indexOf( name ),
Name );
725void QgsStyleModel::onEntityRename(
QgsStyle::StyleEntity type,
const QString &oldName,
const QString &newName )
727 mIconCache[ type ].remove( oldName );
728 const QStringList oldSymbolNames = mEntityNames[ type ];
729 const QStringList newSymbolNames = mStyle->
allNames( type );
732 const int oldNameIndex = oldSymbolNames.indexOf( oldName );
733 if ( oldNameIndex < 0 )
737 const int newNameIndex = newSymbolNames.indexOf( newName );
738 if ( newNameIndex < 0 )
741 if ( newNameIndex == oldNameIndex )
743 mEntityNames[ type ] = newSymbolNames;
747 const int offset = offsetForEntity( type );
748 beginMoveRows( QModelIndex(), oldNameIndex + offset, oldNameIndex + offset, QModelIndex(), ( newNameIndex > oldNameIndex ? newNameIndex + 1 : newNameIndex ) + offset );
749 mEntityNames[ type ] = newSymbolNames;
753void QgsStyleModel::onTagsChanged(
int entity,
const QString &name,
const QStringList & )
756 int row = mEntityNames[type].indexOf( name ) + offsetForEntity( type );
769void QgsStyleModel::rebuildSymbolIcons()
772 mExpressionContext.reset();
776 emit dataChanged(
index( 0, 0 ),
index( lastRow, 0 ), QVector<int>() << Qt::DecorationRole );
780void QgsStyleModel::iconGenerated(
QgsStyle::StyleEntity type,
const QString &name,
const QIcon &icon )
782 int row = mEntityNames[type].indexOf( name ) + offsetForEntity( type );
787 mPending3dSymbolIcons.remove( name );
789 emit dataChanged(
index( row, 0 ),
index( row, 0 ) );
805 int maxRowForEntity = 0;
808 maxRowForEntity += mEntityNames[ type ].size();
809 if ( row < maxRowForEntity )
823 if ( type == entity )
826 offset += mEntityNames[ type ].size();
836 : QSortFilterProxyModel( parent )
840 setSourceModel( mModel );
844void QgsStyleProxyModel::initialize()
846 setSortCaseSensitivity( Qt::CaseInsensitive );
848 setDynamicSortFilter(
true );
858 if ( mSmartGroupId >= 0 )
874 if ( mSmartGroupId >= 0 )
881 : QSortFilterProxyModel( parent )
883 , mStyle( model->style() )
885 setSourceModel( mModel );
890 : QSortFilterProxyModel( parent )
891 , mCombinedModel( model )
893 setSourceModel( mCombinedModel );
899 if ( mFilterString.isEmpty() && !mEntityFilterEnabled && !mSymbolTypeFilterEnabled && mTagId < 0 && mSmartGroupId < 0 && !mFavoritesOnly && mTagFilter.isEmpty() )
902 const QModelIndex index = sourceModel()->index( source_row, 0, source_parent );
907 const QString name = sourceModel()->data( index ).toString();
911 if ( mEntityFilterEnabled && ( mEntityFilters.empty() || !mEntityFilters.contains( styleEntityType ) ) )
915 if ( mSymbolTypeFilterEnabled &&
symbolType != mSymbolType )
920 switch ( styleEntityType )
940 if ( !types.empty() && !types.contains( QVariant::fromValue( mLayerType ) ) )
947 if ( mTagId >= 0 && !mTaggedSymbolNames.contains( name ) )
950 if ( mSmartGroupId >= 0 && !mSmartGroupSymbolNames.contains( name ) )
953 if ( !mTagFilter.isEmpty() && !tags.contains( mTagFilter, Qt::CaseInsensitive ) )
959 if ( !mFilterString.isEmpty() )
963 const QStringList partsToMatch = mFilterString.trimmed().split(
' ' );
965 QStringList partsToSearch = name.split(
' ' );
966 for (
const QString &tag : tags )
968 partsToSearch.append( tag.split(
' ' ) );
971 for (
const QString &part : partsToMatch )
974 for (
const QString &partToSearch : std::as_const( partsToSearch ) )
976 if ( partToSearch.contains( part, Qt::CaseInsensitive ) )
994 if ( leftSource != rightSource )
995 return QString::localeAwareCompare( leftSource, rightSource ) < 0;
999 return QString::localeAwareCompare( leftName, rightName ) < 0;
1004 mFilterString = filter;
1011 return mFavoritesOnly;
1024 if ( mCombinedModel )
1032 if ( mCombinedModel )
1038 return mSymbolTypeFilterEnabled;
1043 mSymbolTypeFilterEnabled = enabled;
1064 mTaggedSymbolNames.clear();
1068 mTaggedSymbolNames.append( mStyle->
symbolsWithTag( entity, mTagId ) );
1098 mSmartGroupSymbolNames.clear();
1099 if ( mSmartGroupId >= 0 )
1110 return mSmartGroupId;
1126 return mEntityFilterEnabled;
1142 mEntityFilters = QList< QgsStyle::StyleEntity >() <<
entityFilter;
1148 mEntityFilters = filters;
GeometryType
The geometry types are used to group Qgis::WkbType in a coarse way.
static const double UI_SCALE_FACTOR
UI scaling factor.
An abstract base class for icon generators for a QgsStyleModel.
void setTargetScreenProperties(const QSet< QgsScreenProperties > &properties)
Sets the target screen properties to use when generating icons.
void setIconSizes(const QList< QSize > &sizes)
Sets the list of icon sizes to generate.
virtual void generateIcon(QgsStyle *style, QgsStyle::StyleEntity type, const QString &name)=0
Triggers generation of an icon for an entity from the specified style database, with matching entity ...
QgsAbstractStyleEntityIconGenerator(QObject *parent)
Constructor for QgsAbstractStyleEntityIconGenerator, with the specified parent object.
QSet< QgsScreenProperties > targetScreenProperties() const
Returns the target screen properties to use when generating icons.
QList< QSize > iconSizes() const
Returns the list of icon sizes to generate.
void iconGenerated(QgsStyle::StyleEntity type, const QString &name, const QIcon &icon)
Emitted when the icon for the style entity with matching type and name has been generated.
static QString defaultThemePath()
Returns the path to the default theme directory.
static QgsImageCache * imageCache()
Returns the application's image cache, used for caching resampled versions of raster images.
static QgsSvgCache * svgCache()
Returns the application's SVG cache, used for caching SVG images and handling parameter replacement w...
static QgsStyleModel * defaultStyleModel()
Returns a shared QgsStyleModel containing the default style library (see QgsStyle::defaultStyle()).
A model which contains entities from multiple QgsStyle databases.
void addTargetScreenProperties(const QgsScreenProperties &properties)
Adds additional target screen properties to use when generating icons for Qt::DecorationRole data.
void addDesiredIconSize(QSize size)
Adds an additional icon size to generate for Qt::DecorationRole data.
static QList< QgsExpressionContextScope * > globalProjectLayerScopes(const QgsMapLayer *layer)
Creates a list of three scopes: global, layer's project and layer.
void remoteImageFetched(const QString &url)
Emitted when the cache has finished retrieving an image file from a remote url.
Represents a patch shape for use in map legends.
bool isNull() const
Returns true if the patch shape is a null QgsLegendPatchShape, which indicates that the default legen...
Contains settings for how a map layer will be labeled.
static QPixmap labelSettingsPreviewPixmap(const QgsPalLayerSettings &settings, QSize size, const QString &previewText=QString(), int padding=0, const QgsScreenProperties &screen=QgsScreenProperties())
Returns a pixmap preview for label settings.
Stores properties relating to a screen.
double devicePixelRatio() const
Returns the ratio between physical pixels and device-independent pixels for the screen.
bool isValid() const
Returns true if the properties are valid.
A QAbstractItemModel subclass for showing symbol and color ramp entities contained within a QgsStyle ...
@ IsFavorite
Whether entity is flagged as a favorite.
@ LayerType
Layer type (for label settings entities)
@ IsTitle
True if the index corresponds to a title item.
@ SymbolType
Symbol type (for symbol or legend patch shape entities)
@ StyleFileName
File name of associated QgsStyle (QgsStyle::fileName())
@ Type
Style entity type, see QgsStyle::StyleEntity.
@ CompatibleGeometryTypes
Compatible layer geometry types (for 3D symbols)
@ Tag
String list of tags.
@ StyleName
Name of associated QgsStyle (QgsStyle::name())
Qt::ItemFlags flags(const QModelIndex &index) const override
QModelIndex index(int row, int column, const QModelIndex &parent=QModelIndex()) const override
QVariant headerData(int section, Qt::Orientation orientation, int role=Qt::DisplayRole) const override
int columnCount(const QModelIndex &parent=QModelIndex()) const override
QVariant data(const QModelIndex &index, int role) const override
static void setIconGenerator(QgsAbstractStyleEntityIconGenerator *generator)
Sets the icon generator to use for deferred style entity icon generation.
int rowCount(const QModelIndex &parent=QModelIndex()) const override
bool setData(const QModelIndex &index, const QVariant &value, int role=Qt::EditRole) override
QModelIndex parent(const QModelIndex &index) const override
void addTargetScreenProperties(const QgsScreenProperties &properties)
Adds additional target screen properties to use when generating icons for Qt::DecorationRole data.
QgsStyleModel(QgsStyle *style, QObject *parent=nullptr)
Constructor for QgsStyleModel, for the specified style and parent object.
void addDesiredIconSize(QSize size)
Adds an additional icon size to generate for Qt::DecorationRole data.
void setEntityFilter(QgsStyle::StyleEntity filter)
Sets the style entity type filter.
bool lessThan(const QModelIndex &left, const QModelIndex &right) const override
bool favoritesOnly() const
Returns true if the model is showing only favorited entities.
void setSymbolTypeFilterEnabled(bool enabled)
Sets whether filtering by symbol type is enabled.
void setTagId(int id)
Sets a tag id to filter style entities by.
QString tagString() const
Returns the tag string used to filter style entities by.
Qgis::SymbolType symbolType() const
Returns the symbol type filter.
void setTagString(const QString &tag)
Sets a tag to filter style entities by.
QgsStyle::StyleEntity entityFilter() const
Returns the style entity type filter.
QgsStyleProxyModel(QgsStyle *style, QObject *parent=nullptr)
Constructor for QgsStyleProxyModel, for the specified style and parent object.
int tagId() const
Returns the tag id used to filter style entities by.
void setEntityFilters(const QList< QgsStyle::StyleEntity > &filters)
Sets the style entity type filters.
bool filterAcceptsRow(int source_row, const QModelIndex &source_parent) const override
void setFavoritesOnly(bool favoritesOnly)
Sets whether the model should show only favorited entities.
void setSymbolType(Qgis::SymbolType type)
Sets the symbol type filter.
bool entityFilterEnabled() const
Returns true if filtering by entity type is enabled.
Qgis::GeometryType layerType() const
Returns the layer type filter, or Qgis::GeometryType::Unknown if no layer type filter is present.
void addDesiredIconSize(QSize size)
Adds an additional icon size to generate for Qt::DecorationRole data.
void addTargetScreenProperties(const QgsScreenProperties &properties)
Adds additional target screen properties to use when generating icons for Qt::DecorationRole data.
void setEntityFilterEnabled(bool enabled)
Sets whether filtering by entity type is enabled.
void setSmartGroupId(int id)
Sets a smart group id to filter style entities by.
bool symbolTypeFilterEnabled() const
Returns true if filtering by symbol type is enabled.
int smartGroupId() const
Returns the smart group id used to filter style entities by.
void setFilterString(const QString &filter)
Sets a filter string, such that only symbol entities with names matching the specified string will be...
void setLayerType(Qgis::GeometryType type)
Sets the layer type filter.
QgsTextFormat textFormat(const QString &name) const
Returns the text format with the specified name.
QStringList allNames(StyleEntity type) const
Returns a list of the names of all existing entities of the specified type.
void entityChanged(QgsStyle::StyleEntity entity, const QString &name)
Emitted whenever an entity's definition is changed.
void rebuildIconPreviews()
Emitted whenever icon previews for entities in the style must be rebuilt.
QStringList symbolsWithTag(StyleEntity type, int tagid) const
Returns the symbol names with which have the given tag.
QgsSymbol * symbol(const QString &name)
Returns a NEW copy of symbol.
QStringList symbolsOfSmartgroup(StyleEntity type, int id)
Returns the symbols for the smartgroup.
StyleEntity
Enum for Entities involved in a style.
@ LabelSettingsEntity
Label settings.
@ TextFormatEntity
Text formats.
@ SmartgroupEntity
Smart groups.
@ Symbol3DEntity
3D symbol entity
@ ColorrampEntity
Color ramps.
@ LegendPatchShapeEntity
Legend patch shape.
QStringList tagsOfSymbol(StyleEntity type, const QString &symbol)
Returns the tags associated with the symbol.
QList< Qgis::GeometryType > symbol3DCompatibleGeometryTypes(const QString &name) const
Returns the list of the vector layer geometry types which are compatible with the 3D symbol with the ...
void entityRenamed(QgsStyle::StyleEntity entity, const QString &oldName, const QString &newName)
Emitted whenever a entity of the specified type has been renamed from oldName to newName.
const QgsSymbol * symbolRef(const QString &name) const
Returns a const pointer to a symbol (doesn't create new instance)
void initialized()
Emitted when the style database has been fully initialized.
QString fileName() const
Returns the current file name of the style database.
bool isInitialized() const
Returns true if the style is initialized and ready for use.
QgsColorRamp * colorRamp(const QString &name) const
Returns a new copy of the specified color ramp.
bool renameEntity(StyleEntity type, const QString &oldName, const QString &newName)
Renames an entity of the specified type from oldName to newName.
bool isFavorite(StyleEntity type, const QString &name)
Returns true if the symbol with matching type and name is marked as a favorite.
QString name() const
Returns the name of the style.
Qgis::GeometryType labelSettingsLayerType(const QString &name) const
Returns the layer geometry type corresponding to the label settings with the specified name,...
void entityTagsChanged(QgsStyle::StyleEntity entity, const QString &name, const QStringList &newTags)
Emitted whenever an entity's tags are changed.
void favoritedChanged(QgsStyle::StyleEntity entity, const QString &name, bool isFavorite)
Emitted whenever an entity is either favorited or un-favorited.
QgsPalLayerSettings labelSettings(const QString &name) const
Returns the label settings with the specified name.
void entityRemoved(QgsStyle::StyleEntity entity, const QString &name)
Emitted whenever an entity of the specified type is removed from the style and the database has been ...
Qgis::SymbolType legendPatchShapeSymbolType(const QString &name) const
Returns the symbol type corresponding to the legend patch shape with the specified name,...
const QgsSymbol * previewSymbolForPatchShape(const QgsLegendPatchShape &shape) const
Returns a symbol to use for rendering preview icons for a patch shape.
QgsLegendPatchShape legendPatchShape(const QString &name) const
Returns the legend patch shape with the specified name.
void entityAdded(QgsStyle::StyleEntity entity, const QString &name)
Emitted every time a new entity has been added to the database.
void remoteSvgFetched(const QString &url)
Emitted when the cache has finished retrieving an SVG file from a remote url.
static QPixmap colorRampPreviewPixmap(QgsColorRamp *ramp, QSize size, int padding=0, Qt::Orientation direction=Qt::Horizontal, bool flipDirection=false, bool drawTransparentBackground=true)
Returns a pixmap preview for a color ramp.
static QPixmap symbolPreviewPixmap(const QgsSymbol *symbol, QSize size, int padding=0, QgsRenderContext *customContext=nullptr, bool selected=false, const QgsExpressionContext *expressionContext=nullptr, const QgsLegendPatchShape *shape=nullptr, const QgsScreenProperties &screen=QgsScreenProperties())
Returns a pixmap preview for a color ramp.
Abstract base class for all rendered symbols.
Qgis::SymbolType type() const
Returns the symbol's type.
Container for all settings relating to text rendering.
static QPixmap textFormatPreviewPixmap(const QgsTextFormat &format, QSize size, const QString &previewText=QString(), int padding=0, const QgsScreenProperties &screen=QgsScreenProperties())
Returns a pixmap preview for a text format.
const double ICON_PADDING_FACTOR