Added chapter on collection and container classes to contents

[wxWidgets.git] / src / common / image.cpp

diff --git a/src/common/image.cpp b/src/common/image.cpp
index 666a09736a44866dc97cde0836639fda4e1068c3..d8117cb9da270b20254eacedaa5792ab2d7754f4 100644 (file)
--- a/src/common/image.cpp
+++ b/src/common/image.cpp
@@ -57,6 +57,9 @@ public:
     unsigned char   m_maskRed,m_maskGreen,m_maskBlue;
     bool            m_ok;
     bool            m_static;
+    wxPalette       m_palette;
+    wxArrayString   m_optionNames;
+    wxArrayString   m_optionValues;
 };
 
 wxImageRefData::wxImageRefData()
@@ -84,7 +87,7 @@ wxList wxImage::sm_handlers;
 
 #define M_IMGDATA ((wxImageRefData *)m_refData)
 
-    IMPLEMENT_DYNAMIC_CLASS(wxImage, wxObject)
+IMPLEMENT_DYNAMIC_CLASS(wxImage, wxObject)
 
 wxImage::wxImage()
 {
@@ -314,7 +317,7 @@ wxImage wxImage::Mirror( bool horizontally ) const
         for (long i = 0; i < height; i++)
         {
             target_data = data + 3*width*(height-1-i);
-            memcpy( target_data, source_data, 3*width );
+            memcpy( target_data, source_data, (size_t)3*width );
             source_data += 3*width;
         }
     }
@@ -612,6 +615,80 @@ int wxImage::GetHeight() const
     return M_IMGDATA->m_height;
 }
 
+// Palette functions
+
+bool wxImage::HasPalette() const
+{
+    if (!Ok())
+        return FALSE;
+
+    return M_IMGDATA->m_palette.Ok();
+}
+
+const wxPalette& wxImage::GetPalette() const
+{
+    wxCHECK_MSG( Ok(), wxNullPalette, wxT("invalid image") );
+
+    return M_IMGDATA->m_palette;
+}
+
+void wxImage::SetPalette(const wxPalette& palette)
+{
+    wxCHECK_RET( Ok(), wxT("invalid image") );
+
+    M_IMGDATA->m_palette = palette;
+}
+
+// Option functions (arbitrary name/value mapping)
+void wxImage::SetOption(const wxString& name, const wxString& value)
+{
+    wxCHECK_RET( Ok(), wxT("invalid image") );
+
+    int idx = M_IMGDATA->m_optionNames.Index(name, FALSE);
+    if (idx == wxNOT_FOUND)
+    {
+        M_IMGDATA->m_optionNames.Add(name);
+        M_IMGDATA->m_optionValues.Add(value);
+    }
+    else
+    {
+        M_IMGDATA->m_optionNames[idx] = name;
+        M_IMGDATA->m_optionValues[idx] = value;
+    }
+}
+
+void wxImage::SetOption(const wxString& name, int value)
+{
+    wxString valStr;
+    valStr.Printf(wxT("%d"), value);
+    SetOption(name, valStr);
+}
+
+wxString wxImage::GetOption(const wxString& name) const
+{
+    wxCHECK_MSG( Ok(), wxEmptyString, wxT("invalid image") );
+
+    int idx = M_IMGDATA->m_optionNames.Index(name, FALSE);
+    if (idx == wxNOT_FOUND)
+        return wxEmptyString;
+    else
+        return M_IMGDATA->m_optionValues[idx];
+}
+
+int wxImage::GetOptionInt(const wxString& name) const
+{
+    wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
+
+    return wxAtoi(GetOption(name));
+}
+
+bool wxImage::HasOption(const wxString& name) const
+{
+    wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") );
+
+    return (M_IMGDATA->m_optionNames.Index(name, FALSE) != wxNOT_FOUND);
+}
+
 bool wxImage::LoadFile( const wxString& filename, long type )
 {
 #if wxUSE_STREAMS
@@ -662,9 +739,9 @@ bool wxImage::SaveFile( const wxString& filename, int type )
         wxBufferedOutputStream bstream( stream );
         return SaveFile(bstream, type);
     }
-    else
 #endif // wxUSE_STREAMS
-        return FALSE;
+
+    return FALSE;
 }
 
 bool wxImage::SaveFile( const wxString& filename, const wxString& mimetype )
@@ -677,9 +754,9 @@ bool wxImage::SaveFile( const wxString& filename, const wxString& mimetype )
         wxBufferedOutputStream bstream( stream );
         return SaveFile(bstream, mimetype);
     }
-    else
 #endif // wxUSE_STREAMS
-        return FALSE;
+
+    return FALSE;
 }
 
 bool wxImage::CanRead( const wxString &name )
@@ -1020,6 +1097,13 @@ wxBitmap wxImage::ConvertToBitmap() const
     hbitmap = ::CreateCompatibleBitmap( hdc, width, bmpHeight );
     ::SelectObject( memdc, hbitmap);
 
+    HPALETTE hOldPalette = 0;
+    if (GetPalette().Ok())
+    {
+        hOldPalette = ::SelectPalette(memdc, (HPALETTE) GetPalette().GetHPALETTE(), FALSE);
+        ::RealizePalette(memdc);
+    }
+
     // copy image data into DIB data and then into DDB (in a loop)
     unsigned char *data = GetData();
     int i, j, n;
@@ -1069,6 +1153,9 @@ wxBitmap wxImage::ConvertToBitmap() const
     }
     bitmap.SetHBITMAP( (WXHBITMAP) hbitmap );
 
+    if (hOldPalette)
+        SelectPalette(memdc, hOldPalette, FALSE);
+
     // similarly, created an mono-bitmap for the possible mask
     if( HasMask() )
     {