Allow customizing wxBusyInfo appearance.

Allow customizing wxBusyInfo window by passing wxBusyInfoFlags containing
information about the icon, title, colours and frame transparency to use.

Update the sample to show such "rich" busy info.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78063 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/busyinfo.h

@@ -13,6 +13,59 @@
 
 #if wxUSE_BUSYINFO
 
+// This class is used to pass all the various parameters to wxBusyInfo ctor.
+// According to the usual naming conventions (see wxAboutDialogInfo,
+// wxFontInfo, ...) it would be called wxBusyInfoInfo, but this would have been
+// rather strange, so we call it wxBusyInfoFlags instead.
+//
+// Methods are mostly self-explanatory except for the difference between "Text"
+// and "Label": the former can contain markup, while the latter is just plain
+// string which is not parsed in any way.
+class wxBusyInfoFlags
+{
+public:
+    wxBusyInfoFlags()
+    {
+        m_parent = NULL;
+        m_alpha = wxALPHA_OPAQUE;
+    }
+
+    wxBusyInfoFlags& Parent(wxWindow* parent)
+        { m_parent = parent; return *this; }
+
+    wxBusyInfoFlags& Icon(const wxIcon& icon)
+        { m_icon = icon; return *this; }
+    wxBusyInfoFlags& Title(const wxString& title)
+        { m_title = title; return *this; }
+    wxBusyInfoFlags& Text(const wxString& text)
+        { m_text = text; return *this; }
+    wxBusyInfoFlags& Label(const wxString& label)
+        { m_label = label; return *this; }
+
+    wxBusyInfoFlags& Foreground(const wxColour& foreground)
+        { m_foreground = foreground; return *this; }
+    wxBusyInfoFlags& Background(const wxColour& background)
+        { m_background = background; return *this; }
+
+    wxBusyInfoFlags& Transparency(wxByte alpha)
+        { m_alpha = alpha; return *this; }
+
+private:
+    wxWindow* m_parent;
+
+    wxIcon m_icon;
+    wxString m_title,
+             m_text,
+             m_label;
+
+    wxColour m_foreground,
+             m_background;
+
+    wxByte m_alpha;
+
+    friend class wxBusyInfo;
+};
+
 #include "wx/generic/busyinfo.h"
 
 #endif // wxUSE_BUSYINFO