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