add support for bitmap and bitmapposition tags to the wxButton XRC handler

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@61065 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/doxygen/overviews/xrc_format.h

@@ -590,7 +590,11 @@ Example:
 @beginTable
 @hdr3col{property, type, description}
 @row3col{label, @ref overview_xrcformat_type_text,
-     Label to display on the button (required).}
+    Label to display on the button (may be empty if only bitmap is used).}
+@row3col{bitmap, @ref overview_xrcformat_type_bitmap,
+    Bitmap to display in the button (optional).}
+@row3col{bitmapposition, @c wxLEFT|wxRIGHT|wxTOP|wxBOTTOM,
+    Position of the bitmap in the button, see wxButton::SetBitmapPosition().}
 @row3col{default, @ref overview_xrcformat_type_bool,
     Should this button be the default button in dialog (default: 0)?}
 @endTable

src/xrc/xh_bttn.cpp

@@ -50,6 +50,38 @@ wxObject *wxButtonXmlHandler::DoCreateResource()
 
     if (GetBool(wxT("default"), 0))
         button->SetDefault();
+
+    if ( GetParamNode("bitmap") )
+    {
+        wxDirection dir;
+        const wxString dirstr = GetParamValue("direction");
+        if ( dirstr.empty() || dirstr == "wxLEFT" )
+            dir = wxLEFT;
+        else if ( dirstr == "wxRIGHT" )
+            dir = wxRIGHT;
+        else if ( dirstr == "wxTOP" )
+            dir = wxTOP;
+        else if ( dirstr == "wxBOTTOM" )
+            dir = wxBOTTOM;
+        else
+        {
+            ReportError
+            (
+                GetParamNode("bitmapposition"),
+                wxString::Format
+                (
+                    "Invalid bitmap position \"%s\": must be one of "
+                    "wxLEFT|wxRIGHT|wxTOP|wxBOTTOM.",
+                    dirstr
+                )
+            );
+
+            dir = wxLEFT;
+        }
+
+        button->SetBitmap(GetBitmap("bitmap", wxART_BUTTON), dir);
+    }
+
     SetupWindow(button);
 
     return button;