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 #if !USE_SHARED_LIBRARY
  23 IMPLEMENT_DYNAMIC_CLASS(wxStaticPicture, wxControl)
  24 #endif
  25
  26 /*
  27  * wxStaticPicture
  28  */
  29
  30 BEGIN_EVENT_TABLE(wxStaticPicture, wxControl)
  31     EVT_PAINT(wxStaticPicture::OnPaint)
  32 END_EVENT_TABLE()
  33
  34 bool wxStaticPicture::Create(wxWindow *parent, wxWindowID id,
  35            const wxBitmap& bitmap,
  36            const wxPoint& pos,
  37            const wxSize& s,
  38            long style,
  39            const wxString& name)
  40 {
  41     SetName(name);
  42
  43     wxSize size = s ;
  44     if ( bitmap.Ok() )
  45     {
  46         if ( size.x == wxDefaultCoord )
  47             size.x = bitmap.GetWidth() ;
  48         if ( size.y == wxDefaultCoord )
  49             size.y = bitmap.GetHeight() ;
  50     }
  51
  52     m_backgroundColour = parent->GetBackgroundColour() ;
  53     m_foregroundColour = parent->GetForegroundColour() ;
  54
  55     Bitmap = bitmap;
  56     Align = 0;
  57     Scale = 0;
  58     ScaleX = ScaleY = 1;
  59
  60 #ifndef __WXMSW__
  61     LastScaleX = LastScaleY = -1;
  62     if ( Bitmap.Ok() )
  63         OriginalImage = Bitmap.ConvertToImage();
  64 #endif
  65
  66     if ( id == wxID_ANY )
  67         m_windowId = (int)NewControlId();
  68     else
  69         m_windowId = id;
  70
  71     m_windowStyle = style;
  72
  73     bool ret = wxControl::Create( parent, id, pos, size, style, wxDefaultValidator, name );
  74
  75     SetBestSize( size ) ;
  76
  77     return ret;
  78 }
  79
  80 void wxStaticPicture::SetBitmap( const wxBitmap& bmp )
  81 {
  82     Bitmap = bmp;
  83 #ifndef __WXMSW__
  84     if ( Bitmap.Ok() )
  85         OriginalImage = Bitmap.ConvertToImage();
  86     LastScaleX = LastScaleY = -1;
  87 #endif
  88 }
  89
  90 void wxStaticPicture::OnPaint(wxPaintEvent& WXUNUSED(event))
  91 {
  92     if ( !Bitmap.Ok() )
  93         return;
  94
  95     wxPaintDC dc( this );
  96     PrepareDC( dc );
  97     dc.BeginDrawing();
  98
  99     wxSize sz = GetSize();
 100     wxSize bmpsz( Bitmap.GetWidth(), Bitmap.GetHeight() );
 101     float sx = 1.0f, sy = 1.0f;
 102
 103     if ( Scale & wxSCALE_UNIFORM )
 104     {
 105         float _sx = (float)sz.GetWidth() / (float)bmpsz.GetWidth();
 106         float _sy = (float)sz.GetHeight() / (float)bmpsz.GetHeight();
 107         sx = sy = _sx < _sy ? _sx : _sy;
 108     }
 109     else
 110     if ( Scale & wxSCALE_CUSTOM )
 111     {
 112         sx = ScaleX;
 113         sy = ScaleY;
 114     }
 115     else
 116     {
 117         if ( Scale & wxSCALE_HORIZONTAL )
 118             sx = (float)sz.x/(float)bmpsz.x;
 119         if ( Scale & wxSCALE_VERTICAL )
 120             sy = (float)sz.y/(float)bmpsz.y;
 121     }
 122
 123     bmpsz = wxSize( (int)(bmpsz.x*sx), (int)(bmpsz.y*sy) );
 124
 125     wxPoint pos( 0, 0 );
 126
 127     if ( Align & wxALIGN_CENTER_HORIZONTAL ) pos.x = (sz.x-bmpsz.x)/2;
 128     else if ( Align & wxALIGN_RIGHT ) pos.x = sz.x-bmpsz.x;
 129
 130     if ( Align & wxALIGN_CENTER_VERTICAL ) pos.y = (sz.y-bmpsz.y)/2;
 131     else if ( Align & wxALIGN_BOTTOM ) pos.y = sz.y-bmpsz.y;
 132
 133     if ( Scale )
 134     {
 135 #ifdef __WXMSW__
 136         double ux, uy;
 137         dc.GetUserScale( &ux, &uy );
 138         dc.SetUserScale( ux*sx, uy*sy );
 139         dc.DrawBitmap( Bitmap, (int)((float)pos.x/sx), (int)((float)pos.y/sy) );
 140         dc.SetUserScale( ux, uy );
 141 #else
 142         if ( LastScaleX != sx || LastScaleY != sy )
 143         {
 144             LastScaleX = sx;
 145             LastScaleY = sy;
 146             ScaledBitmap = wxBitmap( OriginalImage.Scale( bmpsz.x, bmpsz.y ) );
 147         }
 148         dc.DrawBitmap( ScaledBitmap, pos.x, pos.y );
 149 #endif
 150     }
 151     else
 152         dc.DrawBitmap( Bitmap, pos.x, pos.y );
 153
 154     dc.EndDrawing();
 155 }
 156
 157 //WXDLLEXPORT_DATA(const wxChar *) wxStaticPictureNameStr = wxT("message");
 158 const wxChar * wxStaticPictureNameStr = wxT("message");