contrib/src/gizmos/statpict.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        statpict.cpp
   3 // Purpose:     wxStaticPicture
   4 // Author:      Wade Brainerd (wadeb@wadeb.com)
   5 // Modified by:
   6 // Created:     2003-05-01
   7 // RCS-ID:
   8 // Copyright:   (c) Wade Brainerd
   9 // Licence:       wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13   #pragma implementation "statpict.h"
  14 #endif
  15
  16 #include "wx/wxprec.h"
  17 #include "wx/defs.h"
  18
  19 #include "wx/gizmos/statpict.h"
  20 #include "wx/dcclient.h"
  21
  22 IMPLEMENT_DYNAMIC_CLASS(wxStaticPicture, wxControl)
  23 WXDLLIMPEXP_GIZMOS const wxChar * wxStaticPictureNameStr = wxT("staticPicture");
  24
  25 /*
  26  * wxStaticPicture
  27  */
  28
  29 BEGIN_EVENT_TABLE(wxStaticPicture, wxControl)
  30     EVT_PAINT(wxStaticPicture::OnPaint)
  31 END_EVENT_TABLE()
  32
  33 bool wxStaticPicture::Create(wxWindow *parent, wxWindowID id,
  34            const wxBitmap& bitmap,
  35            const wxPoint& pos,
  36            const wxSize& s,
  37            long style,
  38            const wxString& name)
  39 {
  40     SetName(name);
  41
  42     wxSize size = s ;
  43     if ( bitmap.Ok() )
  44     {
  45         if ( size.x == wxDefaultCoord )
  46             size.x = bitmap.GetWidth() ;
  47         if ( size.y == wxDefaultCoord )
  48             size.y = bitmap.GetHeight() ;
  49     }
  50
  51     m_backgroundColour = parent->GetBackgroundColour() ;
  52     m_foregroundColour = parent->GetForegroundColour() ;
  53
  54     Bitmap = bitmap;
  55     Align = 0;
  56     Scale = 0;
  57     ScaleX = ScaleY = 1;
  58
  59 #ifndef __WXMSW__
  60     LastScaleX = LastScaleY = -1;
  61     if ( Bitmap.Ok() )
  62         OriginalImage = Bitmap.ConvertToImage();
  63 #endif
  64
  65     if ( id == wxID_ANY )
  66         m_windowId = (int)NewControlId();
  67     else
  68         m_windowId = id;
  69
  70     m_windowStyle = style;
  71
  72     bool ret = wxControl::Create( parent, id, pos, size, style, wxDefaultValidator, name );
  73
  74     SetBestSize( size ) ;
  75
  76     return ret;
  77 }
  78
  79 void wxStaticPicture::SetBitmap( const wxBitmap& bmp )
  80 {
  81     Bitmap = bmp;
  82 #ifndef __WXMSW__
  83     if ( Bitmap.Ok() )
  84         OriginalImage = Bitmap.ConvertToImage();
  85     LastScaleX = LastScaleY = -1;
  86 #endif
  87 }
  88
  89 void wxStaticPicture::OnPaint(wxPaintEvent& WXUNUSED(event))
  90 {
  91     if ( !Bitmap.Ok() )
  92         return;
  93
  94     wxPaintDC dc( this );
  95     PrepareDC( dc );
  96     dc.BeginDrawing();
  97
  98     wxSize sz = GetSize();
  99     wxSize bmpsz( Bitmap.GetWidth(), Bitmap.GetHeight() );
 100     float sx = 1.0f, sy = 1.0f;
 101
 102     if ( Scale & wxSCALE_UNIFORM )
 103     {
 104         float _sx = (float)sz.GetWidth() / (float)bmpsz.GetWidth();
 105         float _sy = (float)sz.GetHeight() / (float)bmpsz.GetHeight();
 106         sx = sy = _sx < _sy ? _sx : _sy;
 107     }
 108     else
 109     if ( Scale & wxSCALE_CUSTOM )
 110     {
 111         sx = ScaleX;
 112         sy = ScaleY;
 113     }
 114     else
 115     {
 116         if ( Scale & wxSCALE_HORIZONTAL )
 117             sx = (float)sz.x/(float)bmpsz.x;
 118         if ( Scale & wxSCALE_VERTICAL )
 119             sy = (float)sz.y/(float)bmpsz.y;
 120     }
 121
 122     bmpsz = wxSize( (int)(bmpsz.x*sx), (int)(bmpsz.y*sy) );
 123
 124     wxPoint pos( 0, 0 );
 125
 126     if ( Align & wxALIGN_CENTER_HORIZONTAL ) pos.x = (sz.x-bmpsz.x)/2;
 127     else if ( Align & wxALIGN_RIGHT ) pos.x = sz.x-bmpsz.x;
 128
 129     if ( Align & wxALIGN_CENTER_VERTICAL ) pos.y = (sz.y-bmpsz.y)/2;
 130     else if ( Align & wxALIGN_BOTTOM ) pos.y = sz.y-bmpsz.y;
 131
 132     if ( Scale )
 133     {
 134 #ifdef __WXMSW__
 135         double ux, uy;
 136         dc.GetUserScale( &ux, &uy );
 137         dc.SetUserScale( ux*sx, uy*sy );
 138         dc.DrawBitmap( Bitmap, (int)((float)pos.x/sx), (int)((float)pos.y/sy) );
 139         dc.SetUserScale( ux, uy );
 140 #else
 141         if ( LastScaleX != sx || LastScaleY != sy )
 142         {
 143             LastScaleX = sx;
 144             LastScaleY = sy;
 145             ScaledBitmap = wxBitmap( OriginalImage.Scale( bmpsz.x, bmpsz.y ) );
 146         }
 147         dc.DrawBitmap( ScaledBitmap, pos.x, pos.y );
 148 #endif
 149     }
 150     else
 151         dc.DrawBitmap( Bitmap, pos.x, pos.y );
 152
 153     dc.EndDrawing();
 154 }
 155