[FEATURE] Add opacity support to copyright decorator

Author: nirvn

src/app/qgsdecorationcopyright.cpp

@@ -24,11 +24,12 @@ email                : tim@linfiniti.com
 #include "qgsdecorationcopyright.h"
 #include "qgsdecorationcopyrightdialog.h"
 
+#include "qgisapp.h"
 #include "qgsapplication.h"
 #include "qgslogger.h"
 #include "qgsmapcanvas.h"
 #include "qgsproject.h"
-#include "qgisapp.h"
+#include "qgssymbollayerutils.h"
 
 #include <QPainter>
 #include <QMenu>
@@ -64,23 +65,22 @@ void QgsDecorationCopyright::projectRead()
   // there is no font setting in the UI, so just use the Qt/QGIS default font (what mQFont gets when created)
   //  mQFont.setFamily( QgsProject::instance()->readEntry( "CopyrightLabel", "/FontName", "Sans Serif" ) );
   //  mQFont.setPointSize( QgsProject::instance()->readNumEntry( "CopyrightLabel", "/FontSize", 9 ) );
-  QgsProject *prj = QgsProject::instance();
-  mLabelQString = prj->readEntry( mNameConfig, QStringLiteral( "/Label" ), defString );
+
+  mLabelQString = QgsProject::instance()->readEntry( mNameConfig, QStringLiteral( "/Label" ), defString );
   mMarginHorizontal = QgsProject::instance()->readNumEntry( mNameConfig, QStringLiteral( "/MarginH" ), 0 );
   mMarginVertical = QgsProject::instance()->readNumEntry( mNameConfig, QStringLiteral( "/MarginV" ), 0 );
-  mLabelQColor.setNamedColor( prj->readEntry( mNameConfig, QStringLiteral( "/Color" ), QStringLiteral( "#000000" ) ) ); // default color is black
+  mColor = QgsSymbolLayerUtils::decodeColor( QgsProject::instance()->readEntry( mNameConfig, QStringLiteral( "/Color" ), QStringLiteral( "#000000" ) ) );
 }
 
 void QgsDecorationCopyright::saveToProject()
 {
   QgsDecorationItem::saveToProject();
-  QgsProject *prj = QgsProject::instance();
-  prj->writeEntry( mNameConfig, QStringLiteral( "/FontName" ), mQFont.family() );
-  prj->writeEntry( mNameConfig, QStringLiteral( "/FontSize" ), mQFont.pointSize() );
-  prj->writeEntry( mNameConfig, QStringLiteral( "/Label" ), mLabelQString );
-  prj->writeEntry( mNameConfig, QStringLiteral( "/Color" ), mLabelQColor.name() );
-  prj->writeEntry( mNameConfig, QStringLiteral( "/MarginH" ), mMarginHorizontal );
-  prj->writeEntry( mNameConfig, QStringLiteral( "/MarginV" ), mMarginVertical );
+  QgsProject::instance()->writeEntry( mNameConfig, QStringLiteral( "/FontName" ), mQFont.family() );
+  QgsProject::instance()->writeEntry( mNameConfig, QStringLiteral( "/FontSize" ), mQFont.pointSize() );
+  QgsProject::instance()->writeEntry( mNameConfig, QStringLiteral( "/Label" ), mLabelQString );
+  QgsProject::instance()->writeEntry( mNameConfig, QStringLiteral( "/Color" ), QgsSymbolLayerUtils::encodeColor( mColor ) );
+  QgsProject::instance()->writeEntry( mNameConfig, QStringLiteral( "/MarginH" ), mMarginHorizontal );
+  QgsProject::instance()->writeEntry( mNameConfig, QStringLiteral( "/MarginV" ), mMarginVertical );
 }
 
 // Slot called when the buffer menu item is activated
@@ -104,8 +104,9 @@ void QgsDecorationCopyright::render( const QgsMapSettings &mapSettings, QgsRende
     QTextDocument text;
     text.setDefaultFont( mQFont );
     // To set the text color in a QTextDocument we use a CSS style
+
     QString style = "<style type=\"text/css\"> p {color: " +
-                    mLabelQColor.name() + "}</style>";
+                    QString( "rgba( %1, %2, %3, %4 )" ).arg( mColor.red() ).arg( mColor.green() ).arg( mColor.blue() ).arg( QString::number( mColor.alphaF(), 'f', 2 ) ) + "}</style>";
     text.setHtml( style + "<p>" + mLabelQString + "</p>" );
     QSizeF size = text.size();
 

src/app/qgsdecorationcopyright.h

@@ -54,8 +54,10 @@ class APP_EXPORT QgsDecorationCopyright : public QgsDecorationItem
     QFont mQFont;
     //! This is the string that will be used for the copyright label
     QString mLabelQString;
+
     //! This is the color for the copyright label
-    QColor mLabelQColor;
+    QColor mColor;
+
     //! enable or disable use of position percentage for placement
     int mMarginHorizontal;
     int mMarginVertical;

src/app/qgsdecorationcopyrightdialog.cpp

@@ -50,13 +50,14 @@ QgsDecorationCopyrightDialog::QgsDecorationCopyrightDialog( QgsDecorationCopyrig
   wgtUnitSelection->setUnit( mDeco.mMarginUnit );
 
   // color
-  pbnColorChooser->setColor( mDeco.mLabelQColor );
+  pbnColorChooser->setAllowAlpha( true );
+  pbnColorChooser->setColor( mDeco.mColor );
   pbnColorChooser->setContext( QStringLiteral( "gui" ) );
   pbnColorChooser->setColorDialogTitle( tr( "Select text color" ) );
 
   QTextCursor cursor = txtCopyrightText->textCursor();
   txtCopyrightText->selectAll();
-  txtCopyrightText->setTextColor( mDeco.mLabelQColor );
+  txtCopyrightText->setTextColor( mDeco.mColor );
   txtCopyrightText->setTextCursor( cursor );
 }
 
@@ -89,7 +90,7 @@ void QgsDecorationCopyrightDialog::apply()
 {
   mDeco.mQFont = txtCopyrightText->currentFont();
   mDeco.mLabelQString = txtCopyrightText->toPlainText();
-  mDeco.mLabelQColor = pbnColorChooser->color();
+  mDeco.mColor = pbnColorChooser->color();
   mDeco.setPlacement( static_cast< QgsDecorationItem::Placement>( cboPlacement->currentData().toInt() ) );
   mDeco.mMarginUnit = wgtUnitSelection->unit();
   mDeco.mMarginHorizontal = spnHorizontal->value();