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Partially fix sizes of layer tree icons on hidpi displays

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This commit is contained in:
Nyall Dawson 2023-06-22 16:25:58 +10:00
parent b86bb1e2ef
commit f0179e2f8a
2 changed files with 21 additions and 4 deletions
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6
src/core/layertree/qgslayertreemodel.cpp
View File

@ -1522,6 +1522,12 @@ QgsRenderContext *QgsLayerTreeModel::createTemporaryRenderContext() const
// setup temporary render context
std::unique_ptr<QgsRenderContext> context( new QgsRenderContext );
context->setScaleFactor( dpi / 25.4 );
if ( !mTargetScreenProperties.isEmpty() )
{
mTargetScreenProperties.begin()->updateRenderContextForScreen( *context );
}
context->setRendererScale( scale );
context->setMapToPixel( QgsMapToPixel( mupp ) );
context->setFlag( Qgis::RenderContextFlag::RenderSymbolPreview );

19
src/core/layertree/qgslayertreemodellegendnode.cpp
View File

@ -390,11 +390,14 @@ QSize QgsSymbolLegendNode::minimumIconSize( QgsRenderContext *context ) const
const QSize size( mItem.symbol()->type() == Qgis::SymbolType::Marker ? maxSize : minSz.width(),
maxSize );
QgsScreenProperties targetScreen = model() && !model()->targetScreenProperties().isEmpty()
? *model()->targetScreenProperties().begin() : QgsScreenProperties();
minSz = QgsImageOperation::nonTransparentImageRect(
QgsSymbolLayerUtils::symbolPreviewPixmap( symbol ? symbol.get() : mItem.symbol(), size, 0,
context ).toImage(),
context, false, nullptr, nullptr, targetScreen ).toImage(),
minSz,
true ).size();
true ).size() / targetScreen.devicePixelRatio();
}
if ( !mTextOnSymbolLabel.isEmpty() && context )
@ -493,6 +496,11 @@ QgsRenderContext *QgsLayerTreeModelLegendNode::createTemporaryRenderContext() co
context->setFlag( Qgis::RenderContextFlag::Antialiasing, true );
context->setFlag( Qgis::RenderContextFlag::RenderSymbolPreview, true );
if ( model() && !model()->targetScreenProperties().isEmpty() )
{
model()->targetScreenProperties().begin()->updateRenderContextForScreen( *context );
}
QgsExpressionContext expContext;
expContext.appendScopes( QgsExpressionContextUtils::globalProjectLayerScopes( mLayerNode ? mLayerNode->layer() : nullptr ) );
context->setExpressionContext( expContext );
@ -548,6 +556,9 @@ QVariant QgsSymbolLegendNode::data( int role ) const
{
if ( mPixmap.isNull() )
{
QgsScreenProperties targetScreen = model() && !model()->targetScreenProperties().isEmpty()
? *model()->targetScreenProperties().begin() : QgsScreenProperties();
if ( mItem.symbol() )
{
std::unique_ptr<QgsRenderContext> context( createTemporaryRenderContext() );
@ -556,7 +567,7 @@ QVariant QgsSymbolLegendNode::data( int role ) const
double width = 0.0;
double height = 0.0;
const std::unique_ptr<QgsSymbol> symbol( QgsSymbolLayerUtils::restrictedSizeSymbol( mItem.symbol(), MINIMUM_SIZE, MAXIMUM_SIZE, context.get(), width, height ) );
mPixmap = QgsSymbolLayerUtils::symbolPreviewPixmap( symbol ? symbol.get() : mItem.symbol(), mIconSize, 0, context.get() );
mPixmap = QgsSymbolLayerUtils::symbolPreviewPixmap( symbol ? symbol.get() : mItem.symbol(), mIconSize, 0, context.get(), false, nullptr, nullptr, targetScreen );
if ( !mTextOnSymbolLabel.isEmpty() && context )
{
@ -575,7 +586,7 @@ QVariant QgsSymbolLegendNode::data( int role ) const
}
else
{
mPixmap = QPixmap( mIconSize );
mPixmap = QPixmap( mIconSize * targetScreen.devicePixelRatio() );
mPixmap.fill( Qt::transparent );
}
}