Implement alternating row colors

Once again, surprisingly difficult, as you can see on the number of
changed files.

Coding the configuration options wasn't that difficult, but actually
using them was. As it turned out, the default style on Windows doesn't
use QApplication::palette() at all, though it does honor
setAlternatingRowColors(). It just doesn't use the palette colors, but
style sheets. Took me a while to figure out.

So, there's always another layer of indirection: First, add all
QTreeViews to Globals::views, then create a helper to set the style
sheet.

1 files changed, 5 insertions, 0 deletions

diff --git a/globals.h b/globals.h
index e0bc5ef..c8037fe 100644
--- a/globals.h
+++ b/globals.h
@@ -3,9 +3,11 @@
 
 #include <QObject>
 #include <QHash>
+#include <QVector>
 
 class QAction;
 class Viewer;
+class QTreeView;
 
 class Globals : public QObject {
     Q_OBJECT
@@ -13,6 +15,8 @@ class Globals : public QObject {
         enum ActionType { QuitAction = 0, ConfigAction = 1 };
         static Globals *instance();
         void addAction(QAction *a);
+        void addView(QTreeView *v);
+        const QVector<QTreeView*> views() { return mViews; }
         QAction *action(int actionType);
         Viewer *viewer();
 
@@ -23,6 +27,7 @@ class Globals : public QObject {
         static Globals *mInstance;
         QHash<int, QAction*> mActions;
         Viewer *mViewer;
+        QVector<QTreeView*> mViews;
 };
 
 #endif // GLOBALS_H