Improved stylesheet support for setting background and foreground roles

This makes sure that style sheets set both ButtonText and WindowText roles
for all widgets. This fixes among other things the fact that you could not
configure text colors for combo box popups on Mac, Gtk and CleanLooks or
set the background for the whole scrollbar.

Task-number: 160713
Reviewed-by: ogoffart

3 files changed, 18 insertions, 22 deletions

diff --git a/src/gui/styles/gtksymbols.cpp b/src/gui/styles/gtksymbols.cpp
index 3fbf233..f60c980 100644
--- a/src/gui/styles/gtksymbols.cpp
+++ b/src/gui/styles/gtksymbols.cpp
@@ -529,14 +529,14 @@ void QGtk::applyGtkSystemPalette(QWidget *widget)
         ensureWidgetPalette(menubar, QLS("GtkMenuBar"));
     else if (QToolBar *toolbar = qobject_cast<QToolBar*> (widget))
         ensureWidgetPalette(toolbar, QLS("GtkToolbar"));
-    else if (QMenu *menubar = qobject_cast<QMenu*> (widget)) {
+    else if (QMenu *menu = qobject_cast<QMenu*> (widget)) {
         // This really applies to the combo box rendering since
         // QComboBox copies the palette from a QMenu
         QPalette pal = widget->palette();
         GdkColor gdkBg = QGtk::gtkWidget(QLS("GtkMenu"))->style->bg[GTK_STATE_NORMAL];
         QColor bgColor(gdkBg.red>>8, gdkBg.green>>8, gdkBg.blue>>8);
         pal.setBrush(QPalette::Base, bgColor);
-        menubar->setPalette(pal);
+        menu->setPalette(pal);
     }
     widget->setAttribute(Qt::WA_SetPalette, false);
 }
diff --git a/src/gui/styles/qgtkstyle.cpp b/src/gui/styles/qgtkstyle.cpp
index 582962a..81d7cb8 100644
--- a/src/gui/styles/qgtkstyle.cpp
+++ b/src/gui/styles/qgtkstyle.cpp
@@ -2593,16 +2593,24 @@ void QGtkStyle::drawControl(ControlElement element,
                     opt.rect = vCheckRect;
                     drawPrimitive(PE_PanelButtonCommand, &opt, painter, widget);
                 }
-
                 painter->drawPixmap(pmr.topLeft(), pixmap);
             }
 
             GdkColor gdkText = gtkMenuItem->style->fg[GTK_STATE_NORMAL];
             GdkColor gdkDText = gtkMenuItem->style->fg[GTK_STATE_INSENSITIVE];
             GdkColor gdkHText = gtkMenuItem->style->fg[GTK_STATE_PRELIGHT];
+            uint resolve_mask = option->palette.resolve();
             QColor textColor = QColor(gdkText.red>>8, gdkText.green>>8, gdkText.blue>>8);
             QColor disabledTextColor = QColor(gdkDText.red>>8, gdkDText.green>>8, gdkDText.blue>>8);
+            if (resolve_mask & (1 << QPalette::ButtonText)) {
+                textColor = option->palette.buttonText().color();
+                disabledTextColor = option->palette.brush(QPalette::Disabled, QPalette::ButtonText);;
+            }
+
             QColor highlightedTextColor = QColor(gdkHText.red>>8, gdkHText.green>>8, gdkHText.blue>>8);
+            if (resolve_mask & (1 << QPalette::HighlightedText)) {
+                highlightedTextColor = option->palette.highlightedText().color();
+            }
 
             if (selected)
                 painter->setPen(highlightedTextColor);
diff --git a/src/gui/styles/qstylesheetstyle.cpp b/src/gui/styles/qstylesheetstyle.cpp
index a39eeb7..49ac57a 100644
--- a/src/gui/styles/qstylesheetstyle.cpp
+++ b/src/gui/styles/qstylesheetstyle.cpp
@@ -1514,20 +1514,11 @@ void QRenderRule::configurePalette(QPalette *p, QPalette::ColorRole fr, QPalette
 
 void QRenderRule::configurePalette(QPalette *p, QPalette::ColorGroup cg, const QWidget *w, bool embedded)
 {
-#ifdef QT_NO_COMBOBOX
-    const bool isReadOnlyCombo = false;
-#else
-    const bool isReadOnlyCombo = qobject_cast<const QComboBox *>(w) != 0;
-#endif
-
     if (bg && bg->brush.style() != Qt::NoBrush) {
-        if (isReadOnlyCombo) {
-            p->setBrush(cg, QPalette::Base, bg->brush); // for windows, windowxp
-            p->setBrush(cg, QPalette::Button, bg->brush); // for plastique
-        } else {
-            p->setBrush(cg, w->backgroundRole(), bg->brush);
-            //p->setBrush(cg, QPalette::Window, bg->brush);
-        }
+        p->setBrush(cg, QPalette::Base, bg->brush); // for windows, windowxp
+        p->setBrush(cg, QPalette::Button, bg->brush); // for plastique
+        p->setBrush(cg, w->backgroundRole(), bg->brush);
+        p->setBrush(cg, QPalette::Window, bg->brush);
     }
 
     if (embedded) {
@@ -1542,12 +1533,9 @@ void QRenderRule::configurePalette(QPalette *p, QPalette::ColorGroup cg, const Q
         return;
 
     if (pal->foreground.style() != Qt::NoBrush) {
-        if (isReadOnlyCombo) {
-            p->setBrush(cg, QPalette::ButtonText, pal->foreground);
-        } else {
-            p->setBrush(cg, w->foregroundRole(), pal->foreground);
-            p->setBrush(cg, QPalette::WindowText, pal->foreground);
-        }
+        p->setBrush(cg, QPalette::ButtonText, pal->foreground);
+        p->setBrush(cg, w->foregroundRole(), pal->foreground);
+        p->setBrush(cg, QPalette::WindowText, pal->foreground);
         p->setBrush(cg, QPalette::Text, pal->foreground);
     }
     if (pal->selectionBackground.style() != Qt::NoBrush)