fixed handling of dst offset in wxAlphaBlend()

[wxWidgets.git] / src / gtk1 / dataobj.cpp

diff --git a/src/gtk1/dataobj.cpp b/src/gtk1/dataobj.cpp
index 643d09aa7675c341a65150ff21e9b2bec22028cb..e99e21ba01adb26ec6b27b44516298aa4bbb7cfb 100644 (file)
--- a/src/gtk1/dataobj.cpp
+++ b/src/gtk1/dataobj.cpp
@@ -7,23 +7,28 @@
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-    #pragma implementation "dataobj.h"
-#endif
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"

 
 #include "wx/dataobj.h"
 
 #include "wx/dataobj.h"

+
+#if wxUSE_DATAOBJ
+

 #include "wx/app.h"
 #include "wx/debug.h"
 #include "wx/mstream.h"
 #include "wx/image.h"
 #include "wx/app.h"
 #include "wx/debug.h"
 #include "wx/mstream.h"
 #include "wx/image.h"

+#include "wx/log.h"
+#include "wx/uri.h"

 
 

-#include "gdk/gdk.h"
+#include <gdk/gdk.h>

 
 //-------------------------------------------------------------------------
 // global data
 //-------------------------------------------------------------------------
 
 GdkAtom  g_textAtom        = 0;
 
 //-------------------------------------------------------------------------
 // global data
 //-------------------------------------------------------------------------
 
 GdkAtom  g_textAtom        = 0;

+GdkAtom  g_altTextAtom     = 0;

 GdkAtom  g_pngAtom         = 0;
 GdkAtom  g_fileAtom        = 0;
 
 GdkAtom  g_pngAtom         = 0;
 GdkAtom  g_fileAtom        = 0;
 


@@ -33,7 +38,14 @@ GdkAtom  g_fileAtom        = 0;
 
 wxDataFormat::wxDataFormat()
 {
 
 wxDataFormat::wxDataFormat()
 {

-    PrepareFormats();
+    // do *not* call PrepareFormats() from here for 2 reasons:
+    //
+    // 1. we will have time to do it later because some other Set function
+    //    must be called before we really need them
+    //
+    // 2. doing so prevents us from declaring global wxDataFormats because
+    //    calling PrepareFormats (and thus gdk_atom_intern) before GDK is
+    //    initialised will result in a crash

     m_type = wxDF_INVALID;
     m_format = (GdkAtom) 0;
 }
     m_type = wxDF_INVALID;
     m_format = (GdkAtom) 0;
 }


@@ -64,10 +76,19 @@ wxDataFormat::wxDataFormat( NativeFormat format )
 
 void wxDataFormat::SetType( wxDataFormatId type )
 {
 
 void wxDataFormat::SetType( wxDataFormatId type )
 {

+    PrepareFormats();
+    

     m_type = type;
     m_type = type;

-
-    if (m_type == wxDF_TEXT)
+    
+#if wxUSE_UNICODE
+    if (m_type == wxDF_UNICODETEXT)
+        m_format = g_textAtom;
+    else if (m_type == wxDF_TEXT)
+        m_format = g_altTextAtom;
+#else
+    if (m_type == wxDF_TEXT || m_type == wxDF_UNICODETEXT)

         m_format = g_textAtom;
         m_format = g_textAtom;

+#endif

     else
     if (m_type == wxDF_BITMAP)
         m_format = g_pngAtom;
     else
     if (m_type == wxDF_BITMAP)
         m_format = g_pngAtom;


@@ -87,15 +108,23 @@ wxDataFormatId wxDataFormat::GetType() const
 
 wxString wxDataFormat::GetId() const
 {
 
 wxString wxDataFormat::GetId() const
 {

-    wxString ret( gdk_atom_name( m_format ) );  // this will convert from ascii to Unicode
+    wxString ret = wxString::FromAscii( gdk_atom_name( m_format ) );

     return ret;
 }
 
 void wxDataFormat::SetId( NativeFormat format )
 {
     return ret;
 }
 
 void wxDataFormat::SetId( NativeFormat format )
 {

+    PrepareFormats();

     m_format = format;
 
     if (m_format == g_textAtom)
     m_format = format;
 
     if (m_format == g_textAtom)

+#if wxUSE_UNICODE
+        m_type = wxDF_UNICODETEXT;
+#else
+        m_type = wxDF_TEXT;
+#endif
+    else
+    if (m_format == g_altTextAtom)

         m_type = wxDF_TEXT;
     else
     if (m_format == g_pngAtom)
         m_type = wxDF_TEXT;
     else
     if (m_format == g_pngAtom)


@@ -109,19 +138,32 @@ void wxDataFormat::SetId( NativeFormat format )
 
 void wxDataFormat::SetId( const wxChar *id )
 {
 
 void wxDataFormat::SetId( const wxChar *id )
 {

+    PrepareFormats();

     m_type = wxDF_PRIVATE;
     wxString tmp( id );
     m_type = wxDF_PRIVATE;
     wxString tmp( id );

-    m_format = gdk_atom_intern( wxMBSTRINGCAST tmp.mbc_str(), FALSE );  // what is the string cast for?
+    m_format = gdk_atom_intern( (const char*) tmp.ToAscii(), FALSE ); 

 }
 
 void wxDataFormat::PrepareFormats()
 {
 }
 
 void wxDataFormat::PrepareFormats()
 {

+    // VZ: GNOME included in RedHat 6.1 uses the MIME types below and not the
+    //     atoms STRING and file:ALL as the old code was, but normal X apps
+    //     use STRING for text selection when transfering the data via
+    //     clipboard, for example, so do use STRING for now (GNOME apps will
+    //     probably support STRING as well for compatibility anyhow), but use
+    //     text/uri-list for file dnd because compatibility is not important
+    //     here (with whom?)

     if (!g_textAtom)
     if (!g_textAtom)

-        g_textAtom = gdk_atom_intern( "STRING", FALSE );
+#if wxUSE_UNICODE
+        g_textAtom = gdk_atom_intern( "UTF8_STRING", FALSE );
+        g_altTextAtom = gdk_atom_intern( "STRING", FALSE );
+#else
+        g_textAtom = gdk_atom_intern( "STRING" /* "text/plain" */, FALSE );
+#endif

     if (!g_pngAtom)
         g_pngAtom = gdk_atom_intern( "image/png", FALSE );
     if (!g_fileAtom)
     if (!g_pngAtom)
         g_pngAtom = gdk_atom_intern( "image/png", FALSE );
     if (!g_fileAtom)

-        g_fileAtom = gdk_atom_intern( "file:ALL", FALSE );
+        g_fileAtom = gdk_atom_intern( "text/uri-list", FALSE );

 }
 
 //-------------------------------------------------------------------------
 }
 
 //-------------------------------------------------------------------------


@@ -132,18 +174,26 @@ wxDataObject::wxDataObject()
 {
 }
 
 {
 }
 

+wxDataObject::~wxDataObject()
+{
+    // dtor is empty but needed for Darwin and AIX -- otherwise it doesn't link
+}
+

 bool wxDataObject::IsSupportedFormat(const wxDataFormat& format, Direction dir) const
 {
     size_t nFormatCount = GetFormatCount(dir);
 bool wxDataObject::IsSupportedFormat(const wxDataFormat& format, Direction dir) const
 {
     size_t nFormatCount = GetFormatCount(dir);

-    if ( nFormatCount == 1 ) {
+    if ( nFormatCount == 1 ) 
+    {

         return format == GetPreferredFormat();
     }
         return format == GetPreferredFormat();
     }

-    else {
+    else 
+    {

         wxDataFormat *formats = new wxDataFormat[nFormatCount];
         GetAllFormats(formats,dir);
 
         size_t n;
         wxDataFormat *formats = new wxDataFormat[nFormatCount];
         GetAllFormats(formats,dir);
 
         size_t n;

-        for ( n = 0; n < nFormatCount; n++ ) {
+        for ( n = 0; n < nFormatCount; n++ ) 
+        {

             if ( formats[n] == format )
                 break;
         }
             if ( formats[n] == format )
                 break;
         }


@@ -155,6 +205,18 @@ bool wxDataObject::IsSupportedFormat(const wxDataFormat& format, Direction dir)
     }
 }
 
     }
 }
 

+// ----------------------------------------------------------------------------
+// wxTextDataObject
+// ----------------------------------------------------------------------------
+
+#if defined(__WXGTK20__) && wxUSE_UNICODE
+void wxTextDataObject::GetAllFormats(wxDataFormat *formats, wxDataObjectBase::Direction dir) const
+{
+    *formats++ = GetPreferredFormat();
+    *formats = g_altTextAtom;
+}
+#endif
+

 // ----------------------------------------------------------------------------
 // wxFileDataObject
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // wxFileDataObject
 // ----------------------------------------------------------------------------


@@ -162,13 +224,14 @@ bool wxDataObject::IsSupportedFormat(const wxDataFormat& format, Direction dir)
 bool wxFileDataObject::GetDataHere(void *buf) const
 {
     wxString filenames;
 bool wxFileDataObject::GetDataHere(void *buf) const
 {
     wxString filenames;

-    
+

     for (size_t i = 0; i < m_filenames.GetCount(); i++)
     {
     for (size_t i = 0; i < m_filenames.GetCount(); i++)
     {

+        filenames += wxT("file:");

         filenames += m_filenames[i];
         filenames += m_filenames[i];

-       filenames += (wxChar) 0;
+        filenames += wxT("\r\n");

     }
     }

-    
+

     memcpy( buf, filenames.mbc_str(), filenames.Len() + 1 );
 
     return TRUE;
     memcpy( buf, filenames.mbc_str(), filenames.Len() + 1 );
 
     return TRUE;


@@ -177,23 +240,63 @@ bool wxFileDataObject::GetDataHere(void *buf) const
 size_t wxFileDataObject::GetDataSize() const
 {
     size_t res = 0;
 size_t wxFileDataObject::GetDataSize() const
 {
     size_t res = 0;

-    
+

     for (size_t i = 0; i < m_filenames.GetCount(); i++)
     {
     for (size_t i = 0; i < m_filenames.GetCount(); i++)
     {

+        // This is junk in UTF-8

         res += m_filenames[i].Len();
         res += m_filenames[i].Len();

-       res += 1;
+        res += 5 + 2; // "file:" (5) + "\r\n" (2)

     }
     }

-    
+

     return res + 1;
 }
 
 bool wxFileDataObject::SetData(size_t WXUNUSED(size), const void *buf)
 {
     return res + 1;
 }
 
 bool wxFileDataObject::SetData(size_t WXUNUSED(size), const void *buf)
 {

-    /* TODO */
-    
-    wxString file( (const char *)buf );  /* char, not wxChar */
+    m_filenames.Empty();
+
+    // we get data in the text/uri-list format, i.e. as a sequence of URIs
+    // (filenames prefixed by "file:") delimited by "\r\n"
+    wxString filename;
+    for ( const char *p = (const char *)buf; ; p++ )
+    {
+        // some broken programs (testdnd GTK+ sample!) omit the trailing
+        // "\r\n", so check for '\0' explicitly here instead of doing it in
+        // the loop statement to account for it
+        if ( (*p == '\r' && *(p+1) == '\n') || !*p )
+        {
+            size_t lenPrefix = 5; // strlen("file:")
+            if ( filename.Left(lenPrefix).MakeLower() == _T("file:") )
+            {
+                // sometimes the syntax is "file:filename", sometimes it's
+                // URL-like: "file://filename" - deal with both
+                if ( filename[lenPrefix] == _T('/') &&
+                     filename[lenPrefix + 1] == _T('/') )
+                {
+                    // skip the slashes
+                    lenPrefix += 2;
+                }
+
+                AddFile(wxURI::Unescape(filename.c_str() + lenPrefix));
+                filename.Empty();
+            }
+            else
+            {
+                wxLogDebug(_T("Unsupported URI '%s' in wxFileDataObject"),
+                           filename.c_str());
+            }
+
+            if ( !*p )
+                break;

 
 

-    AddFile( file );
+            // skip '\r'
+            p++;
+        }
+        else
+        {
+            filename += *p;
+        }
+    }

 
     return TRUE;
 }
 
     return TRUE;
 }


@@ -252,40 +355,44 @@ bool wxBitmapDataObject::SetData(size_t size, const void *buf)
 {
     Clear();
 
 {
     Clear();
 

+    wxCHECK_MSG( wxImage::FindHandler(wxBITMAP_TYPE_PNG) != NULL,
+                 FALSE, wxT("You must call wxImage::AddHandler(new wxPNGHandler); to be able to use clipboard with bitmaps!") );
+

     m_pngSize = size;
     m_pngData = malloc(m_pngSize);
 
     m_pngSize = size;
     m_pngData = malloc(m_pngSize);
 

-    memcpy( m_pngData, buf, m_pngSize );
+    memcpy(m_pngData, buf, m_pngSize);

 
 

-    wxMemoryInputStream mstream( (char*) m_pngData, m_pngSize );
+    wxMemoryInputStream mstream((char*) m_pngData, m_pngSize);

     wxImage image;
     wxImage image;

-    wxPNGHandler handler;
-    if ( !handler.LoadFile( &image, mstream ) )
+    if ( !image.LoadFile( mstream, wxBITMAP_TYPE_PNG ) )

     {
         return FALSE;
     }
 
     {
         return FALSE;
     }
 

-    m_bitmap = image.ConvertToBitmap();
-    
+    m_bitmap = wxBitmap(image);
+

     return m_bitmap.Ok();
 }
 
 void wxBitmapDataObject::DoConvertToPng()
 {
     return m_bitmap.Ok();
 }
 
 void wxBitmapDataObject::DoConvertToPng()
 {

-    if (!m_bitmap.Ok())
+    if ( !m_bitmap.Ok() )

         return;
 
         return;
 

-    wxImage image( m_bitmap );
-    wxPNGHandler handler;
+    wxCHECK_RET( wxImage::FindHandler(wxBITMAP_TYPE_PNG) != NULL,
+                 wxT("You must call wxImage::AddHandler(new wxPNGHandler); to be able to use clipboard with bitmaps!") );
+
+    wxImage image = m_bitmap.ConvertToImage();

 
     wxCountingOutputStream count;
 
     wxCountingOutputStream count;

-    handler.SaveFile( &image, count );
+    image.SaveFile(count, wxBITMAP_TYPE_PNG);

 
     m_pngSize = count.GetSize() + 100; // sometimes the size seems to vary ???
     m_pngData = malloc(m_pngSize);
 
 
     m_pngSize = count.GetSize() + 100; // sometimes the size seems to vary ???
     m_pngData = malloc(m_pngSize);
 

-    wxMemoryOutputStream mstream( (char*) m_pngData, m_pngSize );
-    handler.SaveFile( &image, mstream );
+    wxMemoryOutputStream mstream((char*) m_pngData, m_pngSize);
+    image.SaveFile(mstream, wxBITMAP_TYPE_PNG);

 }
 
 }
 

-
+#endif // wxUSE_DATAOBJ