moved HasTransparentBackground() from wxUniv to common wxWindow

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@31272 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/window.tex

@@ -1326,7 +1326,6 @@ Returns {\tt true} if this window has the current mouse capture.
 
 \constfunc{virtual bool}{HasScrollbar}{\param{int }{orient}}
 
-
 Returns {\tt true} if this window has a scroll bar for this orientation.
 
 \wxheading{Parameters}
@@ -1334,6 +1333,18 @@ Returns {\tt true} if this window has a scroll bar for this orientation.
 \docparam{orient}{Orientation to check, either {\tt wxHORIZONTAL} or {\tt wxVERTICAL}.}
 
 
+\membersection{wxWindow::HasTransparentBackground}\label{wxwindowhastransparentbackground}
+
+\constfunc{virtual bool}{HasTransparentBackground}{\void}
+
+Returns \true if this window background is transparent (as, for example, for
+wxStaticText) and should show the parent window background.
+
+This method is mostly used internally by the library itself and you normally
+shouldn't have to call it. You may, however, have to override it in your
+wxWindow-derived class to ensure that background is painted correctly.
+
+
 \membersection{wxWindow::Hide}\label{wxwindowhide}
 
 \func{bool}{Hide}{\void}

include/wx/checkbox.h

@@ -106,8 +106,7 @@ public:
         return HasFlag(wxCHK_ALLOW_3RD_STATE_FOR_USER);
     }
 
-    virtual void ApplyParentThemeBackground(const wxColour& bg)
-        { SetBackgroundColour(bg); }
+    virtual bool HasTransparentBackground() { return true; }
 
 protected:
     virtual void DoSet3StateValue(wxCheckBoxState WXUNUSED(state)) { wxFAIL; }

include/wx/statbox.h

@@ -18,27 +18,26 @@ public:
 
     // overriden base class virtuals
     virtual bool AcceptsFocus() const { return false; }
-    virtual void ApplyParentThemeBackground(const wxColour& bg)
-        { SetBackgroundColour(bg); }
+    virtual bool HasTransparentBackground() { return true; }
 
 private:
     DECLARE_NO_COPY_CLASS(wxStaticBoxBase)
 };
 
 #if defined(__WXUNIVERSAL__)
-#include "wx/univ/statbox.h"
+    #include "wx/univ/statbox.h"
 #elif defined(__WXMSW__)
-#include "wx/msw/statbox.h"
+    #include "wx/msw/statbox.h"
 #elif defined(__WXMOTIF__)
-#include "wx/motif/statbox.h"
+    #include "wx/motif/statbox.h"
 #elif defined(__WXGTK__)
-#include "wx/gtk/statbox.h"
+    #include "wx/gtk/statbox.h"
 #elif defined(__WXMAC__)
-#include "wx/mac/statbox.h"
+    #include "wx/mac/statbox.h"
 #elif defined(__WXCOCOA__)
-#include "wx/cocoa/statbox.h"
+    #include "wx/cocoa/statbox.h"
 #elif defined(__WXPM__)
-#include "wx/os2/statbox.h"
+    #include "wx/os2/statbox.h"
 #endif
 
 #endif // wxUSE_STATBOX

include/wx/stattext.h

@@ -14,8 +14,7 @@ public:
 
     // overriden base virtuals
     virtual bool AcceptsFocus() const { return false; }
-    virtual void ApplyParentThemeBackground(const wxColour& bg)
-        { SetBackgroundColour(bg); }
+    virtual bool HasTransparentBackground() { return true; }
 
 private:
     DECLARE_NO_COPY_CLASS(wxStaticTextBase)

include/wx/univ/checkbox.h

@@ -101,8 +101,6 @@ public:
     // overridden base class virtuals
     virtual bool IsPressed() const { return m_isPressed; }
 
-    virtual bool HasTransparentBackground() { return true; }
-
 protected:
     virtual void DoSet3StateValue(wxCheckBoxState WXUNUSED(state));
     virtual wxCheckBoxState DoGet3StateValue() const;

include/wx/univ/statbox.h

@@ -51,8 +51,6 @@ public:
     // take account of this
     virtual wxPoint GetBoxAreaOrigin() const;
 
-    virtual bool HasTransparentBackground() { return true; }
-    
 protected:
     // draw the control
     virtual void DoDraw(wxControlRenderer *renderer);

include/wx/univ/stattext.h

@@ -55,8 +55,6 @@ public:
 
     virtual void SetLabel(const wxString& label);
 
-    virtual bool HasTransparentBackground() { return true; }
-
     virtual bool IsFocused() const { return false; }
 
 protected:

include/wx/univ/window.h

@@ -144,11 +144,6 @@ public:
     // controls only
     virtual bool IsCanvasWindow() const { return false; }
 
-    // returns true if the control has "transparent" areas such
-    // as a wxStaticText and wxCheckBox and the background should
-    // be adapted from a parent window
-    virtual bool HasTransparentBackground() { return false; }
-
     // return true if this control can be highlighted when the mouse is over
     // it (the theme decides itself whether it is really highlighted or not)
     virtual bool CanBeHighlighted() const { return false; }

include/wx/window.h

@@ -777,6 +777,11 @@ public:
     virtual bool SetBackgroundStyle(wxBackgroundStyle style) { m_backgroundStyle = style; return true; }
     virtual wxBackgroundStyle GetBackgroundStyle() const { return m_backgroundStyle; }
 
+        // returns true if the control has "transparent" areas such as a
+        // wxStaticText and wxCheckBox and the background should be adapted
+        // from a parent window
+    virtual bool HasTransparentBackground() { return false; }
+
         // set/retrieve the font for the window (SetFont() returns true if the
         // font really changed)
     virtual bool SetFont(const wxFont& font) = 0;