Force GRASS shell font by setStyleSheet, hopefully fixes #7340; added black on white scheme

Author: blazek

src/plugins/grass/qgsgrassshell.cpp

@@ -59,7 +59,7 @@ QgsGrassShell::QgsGrassShell( QgsGrassTools *tools, QTabWidget *parent, const ch
 #endif
 
   mTerminal->setSize( 80, 25 );
-  mTerminal->setColorScheme( COLOR_SCHEME_BLACK_ON_LIGHT_YELLOW );
+  mTerminal->setColorScheme( COLOR_SCHEME_BLACK_ON_WHITE );
   mTerminal->startShellProgram();
   mTerminal->setFocus( Qt::MouseFocusReason );
 }

src/plugins/grass/qtermwidget/ColorTables.h

@@ -64,5 +64,20 @@ static const ColorEntry blackonlightyellow_color_table[TABLE_COLORS] =
   ColorEntry( QColor( 84, 255, 255 ),  0, 0 ),  ColorEntry( QColor( 255, 255, 255 ),  0, 0 )
 };
 
+// copy of blackonlightyellow_color_table with background set to white
+static const ColorEntry blackonwhite_color_table[TABLE_COLORS] =
+{
+  ColorEntry( QColor( 0,   0,   0 ),  0, 0 ),  ColorEntry( QColor( 255, 255, 255 ),  1, 0 ),
+  ColorEntry( QColor( 0,   0,   0 ),  0, 0 ),  ColorEntry( QColor( 178,  24,  24 ),  0, 0 ),
+  ColorEntry( QColor( 24, 178,  24 ),  0, 0 ),  ColorEntry( QColor( 178, 104,  24 ),  0, 0 ),
+  ColorEntry( QColor( 24,  24, 178 ),  0, 0 ),  ColorEntry( QColor( 178,  24, 178 ),  0, 0 ),
+  ColorEntry( QColor( 24, 178, 178 ),  0, 0 ),  ColorEntry( QColor( 178, 178, 178 ),  0, 0 ),
+  ColorEntry( QColor( 0,   0,   0 ),  0, 1 ),  ColorEntry( QColor( 255, 255, 221 ),  1, 0 ),
+  ColorEntry( QColor( 104, 104, 104 ),  0, 0 ),  ColorEntry( QColor( 255,  84,  84 ),  0, 0 ),
+  ColorEntry( QColor( 84, 255,  84 ),  0, 0 ),  ColorEntry( QColor( 255, 255,  84 ),  0, 0 ),
+  ColorEntry( QColor( 84,  84, 255 ),  0, 0 ),  ColorEntry( QColor( 255,  84, 255 ),  0, 0 ),
+  ColorEntry( QColor( 84, 255, 255 ),  0, 0 ),  ColorEntry( QColor( 255, 255, 255 ),  0, 0 )
+};
+
 #endif
 

src/plugins/grass/qtermwidget/TerminalDisplay.cpp

@@ -1082,9 +1082,13 @@ void TerminalDisplay::paintEvent( QPaintEvent* pe )
   QPainter paint( this );
 //qDebug("%s %d paintEvent %d %d", __FILE__, __LINE__, paint.window().top(), paint.window().right());
 
+  const QColor background = _colorTable[DEFAULT_BACK_COLOR].color;
   foreach ( QRect rect, ( pe->region() & contentsRect() ).rects() )
   {
-    drawBackground( paint, rect, palette().background().color(), true /* use opacity setting */ );
+    // setStyleSheet() changes background color -> use default
+    //drawBackground( paint, rect, palette().background().color(), true /* use opacity setting */ );
+    drawBackground( paint, rect, background, true );
+
     drawContents( paint, rect );
   }
 //    drawBackground(paint,contentsRect(),palette().background().color(), true /* use opacity setting */);

src/plugins/grass/qtermwidget/qtermwidget.cpp

@@ -114,6 +114,14 @@ void QTermWidget::init()
 {
   m_impl->m_terminalDisplay->setSize( 80, 40 );
 
+  // QWidget::setFont() does not guarantee to really change the font (see doc)
+  // setStyleSheet() however should force the font change, it has however some
+  // some side efects like changing background color
+  if ( m_impl->m_terminalDisplay )
+  {
+    m_impl->m_terminalDisplay->setStyleSheet( "font-size: 10pt; font-family: Monospace;" );
+  }
+
   QFont font = QApplication::font();
   font.setFamily( "Monospace" );
   font.setPointSize( 10 );
@@ -181,6 +189,9 @@ void QTermWidget::setColorScheme( int scheme )
     case COLOR_SCHEME_BLACK_ON_LIGHT_YELLOW:
       m_impl->m_terminalDisplay->setColorTable( blackonlightyellow_color_table );
       break;
+    case COLOR_SCHEME_BLACK_ON_WHITE:
+      m_impl->m_terminalDisplay->setColorTable( blackonwhite_color_table );
+      break;
     default: //do nothing
       break;
   };

src/plugins/grass/qtermwidget/qtermwidget.h

@@ -27,7 +27,8 @@ struct TermWidgetImpl;
 
 enum COLOR_SCHEME {     COLOR_SCHEME_WHITE_ON_BLACK = 1,
                         COLOR_SCHEME_GREEN_ON_BLACK,
-                        COLOR_SCHEME_BLACK_ON_LIGHT_YELLOW
+                        COLOR_SCHEME_BLACK_ON_LIGHT_YELLOW,
+                        COLOR_SCHEME_BLACK_ON_WHITE
                   };
 
 class QTermWidget : public QWidget
@@ -138,7 +139,7 @@ class QTermWidget : public QWidget
 #ifdef __cplusplus
 extern "C"
 #endif
-void *createTermWidget( int startnow, void *parent );
+  void *createTermWidget( int startnow, void *parent );
 
 #endif