Hopefully fixed library names generated by wx-config for OS/2's PM port.

[wxWidgets.git] / samples / image / image.cpp

diff --git a/samples/image/image.cpp b/samples/image/image.cpp
index 597314a38233e82c18d58cd5bba465201e3b7a8d..a0f10192d22a0523f89f5ebc33b596da2a4f855e 100644 (file)
--- a/samples/image/image.cpp
+++ b/samples/image/image.cpp
@@ -81,6 +81,9 @@ public:
     wxBitmap  *my_square;
     wxBitmap  *my_anti;
 
+    wxBitmap  *my_horse_asciigrey_pnm;
+    wxBitmap  *my_horse_rawgrey_pnm;
+
     int xH, yH ;
     int m_ani_images ;
 
@@ -319,10 +322,12 @@ public:
 
             for ( int x = 0; x < REAL_SIZE; ++x )
             {
-                p.Red() = r;
-                p.Green() = g;
-                p.Blue() = b;
-                p.Alpha() = (Data::Iterator::ChannelType)((x*255.)/REAL_SIZE);
+                // note that RGB must be premultiplied by alpha
+                unsigned a = (Data::Iterator::ChannelType)((x*255.)/REAL_SIZE);
+                p.Red() = r * a / 256;
+                p.Green() = g * a / 256;
+                p.Blue() = b * a / 256;
+                p.Alpha() = a;
 
                 ++p; // same as p.OffsetX(1)
             }
@@ -408,6 +413,9 @@ MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
     my_square = (wxBitmap*) NULL;
     my_anti = (wxBitmap*) NULL;
 
+    my_horse_asciigrey_pnm = (wxBitmap*) NULL;
+    my_horse_rawgrey_pnm = (wxBitmap*) NULL;
+
     m_ani_images = 0 ;
 
     SetBackgroundColour(* wxWHITE);
@@ -504,6 +512,20 @@ MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
         wxLogError(wxT("Can't load PNM image"));
     else
         my_horse_pnm = new wxBitmap( image );
+
+    image.Destroy();
+
+    if ( !image.LoadFile( dir + _T("horse_ag.pnm"), wxBITMAP_TYPE_PNM ) )
+        wxLogError(wxT("Can't load PNM image"));
+    else
+        my_horse_asciigrey_pnm = new wxBitmap( image );
+
+    image.Destroy();
+
+    if ( !image.LoadFile( dir + _T("horse_rg.pnm"), wxBITMAP_TYPE_PNM ) )
+        wxLogError(wxT("Can't load PNM image"));
+    else
+        my_horse_rawgrey_pnm = new wxBitmap( image );
 #endif
 
 #if wxUSE_LIBTIFF
@@ -620,6 +642,8 @@ MyCanvas::~MyCanvas()
     delete my_smile_xbm;
     delete my_square;
     delete my_anti;
+    delete my_horse_asciigrey_pnm;
+    delete my_horse_rawgrey_pnm;
 }
 
 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
@@ -673,6 +697,14 @@ void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
     dc.DrawText( _T("PNM handler"), 30, 1285 );
     if (my_horse_pnm && my_horse_pnm->Ok())
         dc.DrawBitmap( *my_horse_pnm, 30, 1300 );
+    
+    dc.DrawText( _T("PNM handler (ascii grey)"), 280, 1285 );
+    if (my_horse_asciigrey_pnm && my_horse_asciigrey_pnm->Ok())
+        dc.DrawBitmap( *my_horse_asciigrey_pnm, 280, 1300 );
+
+    dc.DrawText( _T("PNM handler (raw grey)"), 530, 1285 );
+    if (my_horse_rawgrey_pnm && my_horse_rawgrey_pnm->Ok())
+        dc.DrawBitmap( *my_horse_rawgrey_pnm, 530, 1300 );
 
     dc.DrawText( _T("TIFF handler"), 30, 1515 );
     if (my_horse_tiff && my_horse_tiff->Ok())
@@ -866,10 +898,10 @@ void MyCanvas::CreateAntiAliasedBitmap()
 
 enum
 {
-    ID_QUIT  = 108,
-    ID_ABOUT,
-    ID_NEW,
-    ID_SHOWRAW
+    ID_QUIT  = wxID_EXIT,
+    ID_ABOUT = wxID_ABOUT,
+    ID_NEW = 100,
+    ID_SHOWRAW = 101
 };
 
 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )