src/mac/carbon/bmpbuttn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/carbon/bmpbuttn.cpp
   3 // Purpose:     wxBitmapButton
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #if wxUSE_BMPBUTTON
  15
  16 #include "wx/bmpbuttn.h"
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/dcmemory.h"
  20 #endif
  21
  22 IMPLEMENT_DYNAMIC_CLASS(wxBitmapButton, wxButton)
  23
  24 #include "wx/mac/uma.h"
  25
  26 bool wxBitmapButton::Create( wxWindow *parent,
  27                              wxWindowID id, const wxBitmap& bitmap,
  28                              const wxPoint& pos,
  29                              const wxSize& size,
  30                              long style,
  31                              const wxValidator& validator,
  32                              const wxString& name )
  33 {
  34     m_macIsUserPane = false;
  35
  36     // since bitmapbuttonbase is subclass of button calling wxBitmapButtonBase::Create
  37     // essentially creates an additional button
  38     if ( !wxControl::Create( parent, id, pos, size, style, validator, name ) )
  39         return false;
  40
  41     if ( style & wxBU_AUTODRAW )
  42     {
  43         m_marginX =
  44         m_marginY = wxDEFAULT_BUTTON_MARGIN;
  45     }
  46     else
  47     {
  48         m_marginX =
  49         m_marginY = 0;
  50     }
  51
  52     OSStatus err = noErr;
  53     ControlButtonContentInfo info;
  54
  55     Rect bounds = wxMacGetBoundsForControl( this, pos, size );
  56     m_peer = new wxMacControl( this );
  57
  58     if ( bitmap.Ok() && !size.IsFullySpecified() )
  59     {
  60         // in Mac OS X the bitmap buttons can have only one of the few standard
  61         // sizes and if they don't, the OS rescales them automatically
  62         // resulting in really ugly images, so centre the image in a square of
  63         // standard size instead
  64
  65         // the supported sizes, sorted in decreasng order
  66         static const int stdSizes[] = { 128, 48, 32, 16, 0 };
  67
  68         const int width = bitmap.GetWidth();
  69         const int height = bitmap.GetHeight();
  70
  71         int n;
  72         for ( n = 0; n < (int)WXSIZEOF(stdSizes); n++ )
  73         {
  74             const int sizeStd = stdSizes[n];
  75             if ( width > sizeStd || height > sizeStd )
  76             {
  77                 // it will become -1 if the bitmap is larger than the biggest
  78                 // supported size, this is intentional
  79                 n--;
  80
  81                 break;
  82             }
  83         }
  84
  85         if ( n != -1 )
  86         {
  87             const int sizeStd = stdSizes[n];
  88             if ( width != sizeStd || height != sizeStd )
  89             {
  90                 wxASSERT_MSG( width <= sizeStd && height <= sizeStd,
  91                               _T("bitmap shouldn't be cropped") );
  92
  93                 m_bmpNormal.Create(sizeStd, sizeStd);
  94                 wxMemoryDC dcMem;
  95                 dcMem.SelectObject(m_bmpNormal);
  96                 dcMem.Clear();
  97
  98                 dcMem.DrawBitmap(bitmap,
  99                                  (sizeStd - width)/2, (sizeStd-height)/2,
 100                                  true);
 101             }
 102         }
 103         //else: let the system rescale the bitmap
 104     }
 105
 106     if ( !m_bmpNormal.Ok() )
 107         m_bmpNormal = bitmap;
 108
 109
 110 #ifdef __WXMAC_OSX__
 111     if ( HasFlag( wxBORDER_NONE ) )
 112     {
 113         wxMacCreateBitmapButton( &info, m_bmpNormal, kControlContentIconRef );
 114         err = CreateIconControl(
 115                 MAC_WXHWND(parent->MacGetTopLevelWindowRef()),
 116                 &bounds, &info, false, m_peer->GetControlRefAddr() );
 117     }
 118     else
 119 #endif
 120     {
 121         wxMacCreateBitmapButton( &info, m_bmpNormal );
 122         err = CreateBevelButtonControl(
 123                 MAC_WXHWND(parent->MacGetTopLevelWindowRef()), &bounds, CFSTR(""),
 124                 ((style & wxBU_AUTODRAW) ? kControlBevelButtonSmallBevel : kControlBevelButtonNormalBevel ),
 125                 kControlBehaviorOffsetContents, &info, 0, 0, 0, m_peer->GetControlRefAddr() );
 126     }
 127
 128     verify_noerr( err );
 129
 130     wxMacReleaseBitmapButton( &info );
 131     wxASSERT_MSG( m_peer != NULL && m_peer->Ok(), wxT("No valid native Mac control") );
 132
 133     MacPostControlCreate( pos, size );
 134
 135     return true;
 136 }
 137
 138 void wxBitmapButton::SetBitmapLabel( const wxBitmap& bitmap )
 139 {
 140     m_bmpNormal = bitmap;
 141     InvalidateBestSize();
 142
 143     ControlButtonContentInfo info;
 144
 145 #ifdef __WXMAC_OSX__
 146     if ( HasFlag( wxBORDER_NONE ) )
 147     {
 148         wxMacCreateBitmapButton( &info, m_bmpNormal, kControlContentIconRef );
 149         if ( info.contentType != kControlNoContent )
 150             m_peer->SetData( kControlIconPart, kControlIconContentTag, info );
 151     }
 152     else
 153 #endif
 154     {
 155         wxMacCreateBitmapButton( &info, m_bmpNormal );
 156         if ( info.contentType != kControlNoContent )
 157             m_peer->SetData( kControlButtonPart, kControlBevelButtonContentTag, info );
 158     }
 159
 160     wxMacReleaseBitmapButton( &info );
 161 }
 162
 163 wxSize wxBitmapButton::DoGetBestSize() const
 164 {
 165     wxSize best;
 166
 167     best.x = 2 * m_marginX;
 168     best.y = 2 * m_marginY;
 169     if ( m_bmpNormal.Ok() )
 170     {
 171         best.x += m_bmpNormal.GetWidth();
 172         best.y += m_bmpNormal.GetHeight();
 173     }
 174
 175     return best;
 176 }
 177
 178 #endif