Use kControlContentIconRef in SetBitmapLabel for wxBORDER_NONE buttons.

Factor out code to create a standard sized bitmap so it can be used in
SetBitmapLabel too.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@49358 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/mac/carbon/bmpbuttn.cpp

@@ -23,6 +23,63 @@ IMPLEMENT_DYNAMIC_CLASS(wxBitmapButton, wxButton)
 
 #include "wx/mac/uma.h"
 
+//---------------------------------------------------------------------------
+// Helper functions
+
+static wxBitmap wxMakeStdSizeBitmap(const wxBitmap& bitmap)
+{
+    // in Mac OS X the icon controls (which are used for borderless bitmap
+    // buttons) can have only one of the few standard sizes and if they
+    // don't, the OS rescales them automatically resulting in really ugly
+    // images, so centre the image in a square of standard size instead
+
+    // the supported sizes, sorted in decreasng order
+    static const int stdSizes[] = { 128, 48, 32, 16, 0 };
+
+    const int width = bitmap.GetWidth();
+    const int height = bitmap.GetHeight();
+
+    wxBitmap newBmp(bitmap);
+    
+    int n;
+    for ( n = 0; n < (int)WXSIZEOF(stdSizes); n++ )
+    {
+        const int sizeStd = stdSizes[n];
+        if ( width > sizeStd || height > sizeStd )
+        {
+            // it will become -1 if the bitmap is larger than the biggest
+            // supported size, this is intentional
+            n--;
+
+            break;
+        }
+    }
+
+    if ( n != -1 )
+    {
+        const int sizeStd = stdSizes[n];
+        if ( width != sizeStd || height != sizeStd )
+        {
+            wxASSERT_MSG( width <= sizeStd && height <= sizeStd,
+                          _T("bitmap shouldn't be cropped") );
+
+            newBmp.Create(sizeStd, sizeStd);
+            wxMemoryDC dcMem;
+            dcMem.SelectObject(newBmp);
+            dcMem.Clear();
+
+            dcMem.DrawBitmap(bitmap,
+                             (sizeStd - width)/2, (sizeStd-height)/2,
+                             true);
+        }
+    }
+    //else: let the system rescale the bitmap
+
+    return newBmp;
+}
+
+//---------------------------------------------------------------------------
+
 bool wxBitmapButton::Create( wxWindow *parent,
                              wxWindowID id, const wxBitmap& bitmap,
                              const wxPoint& pos,
@@ -56,54 +113,8 @@ bool wxBitmapButton::Create( wxWindow *parent,
     m_peer = new wxMacControl( this );
 
     if ( bitmap.Ok() && HasFlag(wxBORDER_NONE) )
-    {
+        m_bmpNormal = wxMakeStdSizeBitmap(bitmap);
-        // in Mac OS X the icon controls (which are used for borderless bitmap
+    else
-        // buttons) can have only one of the few standard sizes and if they
-        // don't, the OS rescales them automatically resulting in really ugly
-        // images, so centre the image in a square of standard size instead
-
-        // the supported sizes, sorted in decreasng order
-        static const int stdSizes[] = { 128, 48, 32, 16, 0 };
-
-        const int width = bitmap.GetWidth();
-        const int height = bitmap.GetHeight();
-
-        int n;
-        for ( n = 0; n < (int)WXSIZEOF(stdSizes); n++ )
-        {
-            const int sizeStd = stdSizes[n];
-            if ( width > sizeStd || height > sizeStd )
-            {
-                // it will become -1 if the bitmap is larger than the biggest
-                // supported size, this is intentional
-                n--;
-
-                break;
-            }
-        }
-
-        if ( n != -1 )
-        {
-            const int sizeStd = stdSizes[n];
-            if ( width != sizeStd || height != sizeStd )
-            {
-                wxASSERT_MSG( width <= sizeStd && height <= sizeStd,
-                              _T("bitmap shouldn't be cropped") );
-
-                m_bmpNormal.Create(sizeStd, sizeStd);
-                wxMemoryDC dcMem;
-                dcMem.SelectObject(m_bmpNormal);
-                dcMem.Clear();
-
-                dcMem.DrawBitmap(bitmap,
-                                 (sizeStd - width)/2, (sizeStd-height)/2,
-                                 true);
-            }
-        }
-        //else: let the system rescale the bitmap
-    }
-
-    if ( !m_bmpNormal.Ok() )
         m_bmpNormal = bitmap;
 
 
@@ -138,7 +149,11 @@ bool wxBitmapButton::Create( wxWindow *parent,
 
 void wxBitmapButton::SetBitmapLabel( const wxBitmap& bitmap )
 {
-    m_bmpNormal = bitmap;
+    if ( HasFlag( wxBORDER_NONE ) )
+        m_bmpNormal = wxMakeStdSizeBitmap(bitmap);
+    else
+        m_bmpNormal = bitmap;
+    
     InvalidateBestSize();
 
     ControlButtonContentInfo info;
@@ -146,7 +161,7 @@ void wxBitmapButton::SetBitmapLabel( const wxBitmap& bitmap )
 #ifdef __WXMAC_OSX__
     if ( HasFlag( wxBORDER_NONE ) )
     {        
-        wxMacCreateBitmapButton( &info, m_bmpNormal );
+        wxMacCreateBitmapButton( &info, m_bmpNormal, kControlContentIconRef );
         if ( info.contentType != kControlNoContent )
             m_peer->SetData( kControlIconPart, kControlIconContentTag, info );
     }