#pragma hdrstop
#endif
+#include "wx/defs.h"
+
+#if wxUSE_IMAGE
+
#include "wx/image.h"
#include "wx/bitmap.h"
#include "wx/debug.h"
unsigned char m_maskRed,m_maskGreen,m_maskBlue;
bool m_ok;
bool m_static;
+#if wxUSE_PALETTE
wxPalette m_palette;
+#endif // wxUSE_PALETTE
wxArrayString m_optionNames;
wxArrayString m_optionValues;
+
+ DECLARE_NO_COPY_CLASS(wxImageRefData)
};
wxImageRefData::wxImageRefData()
Create( width, height, data, static_data );
}
-wxImage::wxImage( const wxString& name, long type )
+wxImage::wxImage( const wxString& name, long type, int index )
{
- LoadFile( name, type );
+ LoadFile( name, type, index );
}
-wxImage::wxImage( const wxString& name, const wxString& mimetype )
+wxImage::wxImage( const wxString& name, const wxString& mimetype, int index )
{
- LoadFile( name, mimetype );
+ LoadFile( name, mimetype, index );
}
#if wxUSE_STREAMS
-wxImage::wxImage( wxInputStream& stream, long type )
+wxImage::wxImage( wxInputStream& stream, long type, int index )
{
- LoadFile( stream, type );
+ LoadFile( stream, type, index );
}
-wxImage::wxImage( wxInputStream& stream, const wxString& mimetype )
+wxImage::wxImage( wxInputStream& stream, const wxString& mimetype, int index )
{
- LoadFile( stream, mimetype );
+ LoadFile( stream, mimetype, index );
}
#endif // wxUSE_STREAMS
wxImage::wxImage( const wxImage& image )
+ : wxObject()
{
Ref(image);
}
wxCHECK_MSG( data, image, wxT("unable to create image") );
- if (M_IMGDATA->m_hasMask)
- image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue );
+ image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue );
+ image.SetMask( M_IMGDATA->m_hasMask );
memcpy( data, GetData(), M_IMGDATA->m_width*M_IMGDATA->m_height*3 );
wxCHECK_MSG( Ok(), image, wxT("invalid image") );
- wxCHECK_MSG( (width > 0) && (height > 0), image, wxT("invalid image size") );
+ // can't scale to/from 0 size
+ wxCHECK_MSG( (width > 0) && (height > 0), image,
+ wxT("invalid new image size") );
+
+ long old_height = M_IMGDATA->m_height,
+ old_width = M_IMGDATA->m_width;
+ wxCHECK_MSG( (old_height > 0) && (old_width > 0), image,
+ wxT("invalid old image size") );
image.Create( width, height );
wxCHECK_MSG( data, image, wxT("unable to create image") );
if (M_IMGDATA->m_hasMask)
- image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue );
-
- long old_height = M_IMGDATA->m_height;
- long old_width = M_IMGDATA->m_width;
+ {
+ image.SetMaskColour( M_IMGDATA->m_maskRed,
+ M_IMGDATA->m_maskGreen,
+ M_IMGDATA->m_maskBlue );
+ }
char unsigned *source_data = M_IMGDATA->m_data;
char unsigned *target_data = data;
+#if 0
+ // This is nonsense, RR.
+
+ // We do (x, y) -> (x, y)*oldSize/newSize but the valid values of x and y
+ // are from 0 to size-1, hence all decrement the sizes
+ long old_old_width = old_width;
+ old_height--;
+ old_width--;
+ height--;
+ width--;
+ for ( long j = 0; j <= height; j++ )
+ {
+ // don't crash for images with height == 1
+ long y_offset = height ? (j * old_height / height)* old_old_width : 0;
+
+ for ( long i = 0; i <= width; i++ )
+ {
+ long x_offset = width ? (i * old_width) / width : 0;
+
+ memcpy( target_data, source_data + 3*(y_offset + x_offset), 3 );
+ target_data += 3;
+ }
+ }
+#else
for (long j = 0; j < height; j++)
{
long y_offset = (j * old_height / height) * old_width;
target_data += 3;
}
}
+#endif
+
+ // In case this is a cursor, make sure the hotspot is scalled accordingly:
+ if ( HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X) )
+ image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X,
+ (GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X)*width)/old_width);
+ if ( HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y) )
+ image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y,
+ (GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y)*height)/old_height);
return image;
}
}
return;
}
-
+
if (!HasMask() && image.HasMask())
{
unsigned char r = image.GetMaskRed();
unsigned char g = image.GetMaskGreen();
unsigned char b = image.GetMaskBlue();
-
+
width *= 3;
unsigned char* source_data = image.GetData() + xx*3 + yy*3*image.GetWidth();
int source_step = image.GetWidth()*3;
unsigned char* target_data = GetData() + (x+xx)*3 + (y+yy)*3*M_IMGDATA->m_width;
int target_step = M_IMGDATA->m_width*3;
-
+
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i+=3)
{
- if ((source_data[i] != r) &&
- (source_data[i+1] != g) &&
+ if ((source_data[i] != r) &&
+ (source_data[i+1] != g) &&
(source_data[i+2] != b))
{
memcpy( target_data+i, source_data+i, 3 );
}
- }
+ }
source_data += source_step;
target_data += target_step;
}
return M_IMGDATA->m_height;
}
+
+bool wxImage::FindFirstUnusedColour(
+ unsigned char *r, unsigned char *g, unsigned char *b,
+ unsigned char startR, unsigned char startG, unsigned char startB) const
+{
+ wxImageHistogram histogram;
+ unsigned long key;
+
+ ComputeHistogram(histogram);
+
+ unsigned char r2 = startR;
+ unsigned char g2 = startG;
+ unsigned char b2 = startB;
+
+ key = (r2 << 16) | (g2 << 8) | b2;
+
+ while ( histogram.find(key) != histogram.end() )
+ {
+ // color already used
+ r2++;
+ if ( r2 >= 255 )
+ {
+ r2 = 0;
+ g2++;
+ if ( g2 >= 255 )
+ {
+ g2 = 0;
+ b2++;
+ if ( b2 >= 255 )
+ {
+ wxLogError( _("GetUnusedColour:: No Unused Color in image ") );
+ return FALSE;
+ }
+ }
+ }
+
+ key = (r2 << 16) | (g2 << 8) | b2;
+ }
+
+ if (r) *r = r2;
+ if (g) *g = g2;
+ if (b) *b = b2;
+
+ return TRUE;
+}
+
+
+bool wxImage::SetMaskFromImage(const wxImage& mask,
+ unsigned char mr, unsigned char mg, unsigned char mb)
+{
+ // check that the images are the same size
+ if ( (M_IMGDATA->m_height != mask.GetHeight() ) || (M_IMGDATA->m_width != mask.GetWidth () ) )
+ {
+ wxLogError( _("Image and Mask have different sizes") );
+ return FALSE;
+ }
+
+ // find unused colour
+ unsigned char r,g,b ;
+ if (!FindFirstUnusedColour(&r, &g, &b))
+ {
+ wxLogError( _("No Unused Color in image being masked") );
+ return FALSE ;
+ }
+
+ char unsigned *imgdata = GetData();
+ char unsigned *maskdata = mask.GetData();
+
+ const int w = GetWidth();
+ const int h = GetHeight();
+
+ for (int j = 0; j < h; j++)
+ {
+ for (int i = 0; i < w; i++)
+ {
+ if ((maskdata[0] == mr) && (maskdata[1] == mg) && (maskdata[2] == mb))
+ {
+ imgdata[0] = r;
+ imgdata[1] = g;
+ imgdata[2] = b;
+ }
+ imgdata += 3;
+ maskdata += 3;
+ }
+ }
+
+ SetMaskColour(r, g, b);
+ SetMask(TRUE);
+
+ return TRUE;
+}
+
+#if wxUSE_PALETTE
+
// Palette functions
bool wxImage::HasPalette() const
M_IMGDATA->m_palette = palette;
}
+#endif // wxUSE_PALETTE
+
// Option functions (arbitrary name/value mapping)
void wxImage::SetOption(const wxString& name, const wxString& value)
{
return (M_IMGDATA->m_optionNames.Index(name, FALSE) != wxNOT_FOUND);
}
-bool wxImage::LoadFile( const wxString& filename, long type )
+bool wxImage::LoadFile( const wxString& filename, long type, int index )
{
#if wxUSE_STREAMS
if (wxFileExists(filename))
{
wxFileInputStream stream(filename);
wxBufferedInputStream bstream( stream );
- return LoadFile(bstream, type);
+ return LoadFile(bstream, type, index);
}
else
{
#endif // wxUSE_STREAMS
}
-bool wxImage::LoadFile( const wxString& filename, const wxString& mimetype )
+bool wxImage::LoadFile( const wxString& filename, const wxString& mimetype, int index )
{
#if wxUSE_STREAMS
if (wxFileExists(filename))
{
wxFileInputStream stream(filename);
wxBufferedInputStream bstream( stream );
- return LoadFile(bstream, mimetype);
+ return LoadFile(bstream, mimetype, index);
}
else
{
#endif // wxUSE_STREAMS
}
-bool wxImage::SaveFile( const wxString& filename, int type )
+
+
+bool wxImage::SaveFile( const wxString& filename ) const
+{
+ wxString ext = filename.AfterLast('.').Lower();
+
+ wxImageHandler * pHandler = FindHandler(ext, -1);
+ if (pHandler)
+ {
+ SaveFile(filename, pHandler->GetType());
+ return TRUE;
+ }
+
+ wxLogError(_("Can't save image to file '%s': unknown extension."), filename.c_str());
+
+ return FALSE;
+}
+
+bool wxImage::SaveFile( const wxString& filename, int type ) const
{
#if wxUSE_STREAMS
+ ((wxImage*)this)->SetOption(wxIMAGE_OPTION_FILENAME, filename);
+
wxFileOutputStream stream(filename);
- if ( stream.LastError() == wxStream_NOERROR )
+ if ( stream.IsOk() )
{
wxBufferedOutputStream bstream( stream );
return SaveFile(bstream, type);
return FALSE;
}
-bool wxImage::SaveFile( const wxString& filename, const wxString& mimetype )
+bool wxImage::SaveFile( const wxString& filename, const wxString& mimetype ) const
{
#if wxUSE_STREAMS
+ ((wxImage*)this)->SetOption(wxIMAGE_OPTION_FILENAME, filename);
+
wxFileOutputStream stream(filename);
- if ( stream.LastError() == wxStream_NOERROR )
+ if ( stream.IsOk() )
{
wxBufferedOutputStream bstream( stream );
return SaveFile(bstream, mimetype);
#endif
}
+int wxImage::GetImageCount( const wxString &name, long type )
+{
+#if wxUSE_STREAMS
+ wxFileInputStream stream(name);
+ if (stream.Ok())
+ return GetImageCount(stream, type);
+#endif
+
+ return 0;
+}
+
#if wxUSE_STREAMS
bool wxImage::CanRead( wxInputStream &stream )
{
- wxList &list=GetHandlers();
+ const wxList& list = GetHandlers();
- for ( wxList::Node *node = list.GetFirst(); node; node = node->GetNext() )
+ for ( wxList::Node *node = list.GetFirst(); node; node = node->GetNext() )
{
- wxImageHandler *handler=(wxImageHandler*)node->GetData();
- if (handler->CanRead( stream ))
- return TRUE;
+ wxImageHandler *handler=(wxImageHandler*)node->GetData();
+ if (handler->CanRead( stream ))
+ return TRUE;
}
- return FALSE;
+ return FALSE;
+}
+
+int wxImage::GetImageCount( wxInputStream &stream, long type )
+{
+ wxImageHandler *handler;
+
+ if ( type == wxBITMAP_TYPE_ANY )
+ {
+ wxList &list=GetHandlers();
+
+ for (wxList::Node *node = list.GetFirst(); node; node = node->GetNext())
+ {
+ handler=(wxImageHandler*)node->GetData();
+ if ( handler->CanRead(stream) )
+ return handler->GetImageCount(stream);
+
+ }
+
+ wxLogWarning(_("No handler found for image type."));
+ return 0;
+ }
+
+ handler = FindHandler(type);
+
+ if ( !handler )
+ {
+ wxLogWarning(_("No image handler for type %d defined."), type);
+ return FALSE;
+ }
+
+ if ( handler->CanRead(stream) )
+ {
+ return handler->GetImageCount(stream);
+ }
+ else
+ {
+ wxLogError(_("Image file is not of type %d."), type);
+ return 0;
+ }
}
-bool wxImage::LoadFile( wxInputStream& stream, long type )
+bool wxImage::LoadFile( wxInputStream& stream, long type, int index )
{
UnRef();
wxImageHandler *handler;
- if (type==wxBITMAP_TYPE_ANY)
+ if ( type == wxBITMAP_TYPE_ANY )
{
wxList &list=GetHandlers();
for ( wxList::Node *node = list.GetFirst(); node; node = node->GetNext() )
{
handler=(wxImageHandler*)node->GetData();
- if (handler->CanRead( stream ))
- return handler->LoadFile( this, stream );
+ if ( handler->CanRead(stream) )
+ return handler->LoadFile(this, stream, TRUE/*verbose*/, index);
}
handler = FindHandler(type);
- if (handler == NULL)
+ if (handler == 0)
{
wxLogWarning( _("No image handler for type %d defined."), type );
return FALSE;
}
- return handler->LoadFile( this, stream );
+ return handler->LoadFile(this, stream, TRUE/*verbose*/, index);
}
-bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype )
+bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype, int index )
{
UnRef();
wxImageHandler *handler = FindHandlerMime(mimetype);
- if (handler == NULL)
+ if (handler == 0)
{
wxLogWarning( _("No image handler for type %s defined."), mimetype.GetData() );
return FALSE;
}
- return handler->LoadFile( this, stream );
+ return handler->LoadFile( this, stream, TRUE/*verbose*/, index );
}
-bool wxImage::SaveFile( wxOutputStream& stream, int type )
+bool wxImage::SaveFile( wxOutputStream& stream, int type ) const
{
wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") );
wxImageHandler *handler = FindHandler(type);
- if (handler == NULL)
+ if (handler == 0)
{
wxLogWarning( _("No image handler for type %d defined."), type );
return FALSE;
}
- return handler->SaveFile( this, stream );
+ return handler->SaveFile( (wxImage*)this, stream );
}
-bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype )
+bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype ) const
{
wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") );
wxImageHandler *handler = FindHandlerMime(mimetype);
- if (handler == NULL)
+ if (handler == 0)
{
wxLogWarning( _("No image handler for type %s defined."), mimetype.GetData() );
return FALSE;
}
- return handler->SaveFile( this, stream );
+ return handler->SaveFile( (wxImage*)this, stream );
}
#endif // wxUSE_STREAMS
// make sure that the memory will be freed at the program end
sm_handlers.DeleteContents(TRUE);
- sm_handlers.Append( handler );
+ // Check for an existing handler of the type being added.
+ if (FindHandler( handler->GetType() ) == 0)
+ {
+ sm_handlers.Append( handler );
+ }
+ else
+ {
+ // This is not documented behaviour, merely the simplest 'fix'
+ // for preventing duplicate additions. If someone ever has
+ // a good reason to add and remove duplicate handlers (and they
+ // may) we should probably refcount the duplicates.
+ // also an issue in InsertHandler below.
+
+ wxLogDebug( _T("Adding duplicate image handler for '%s'"),
+ handler->GetName().c_str() );
+ delete handler;
+ }
}
void wxImage::InsertHandler( wxImageHandler *handler )
// make sure that the memory will be freed at the program end
sm_handlers.DeleteContents(TRUE);
- sm_handlers.Insert( handler );
+ // Check for an existing handler of the type being added.
+ if (FindHandler( handler->GetType() ) == 0)
+ {
+ sm_handlers.Insert( handler );
+ }
+ else
+ {
+ // see AddHandler for additional comments.
+ wxLogDebug( _T("Inserting duplicate image handler for '%s'"),
+ handler->GetName().c_str() );
+ delete handler;
+ }
}
bool wxImage::RemoveHandler( const wxString& name )
wxImageHandler *wxImage::FindHandler( const wxString& name )
{
- wxNode *node = sm_handlers.First();
+ wxNode *node = sm_handlers.GetFirst();
while (node)
{
- wxImageHandler *handler = (wxImageHandler*)node->Data();
+ wxImageHandler *handler = (wxImageHandler*)node->GetData();
if (handler->GetName().Cmp(name) == 0) return handler;
- node = node->Next();
+ node = node->GetNext();
}
- return (wxImageHandler *)NULL;
+ return 0;
}
wxImageHandler *wxImage::FindHandler( const wxString& extension, long bitmapType )
{
- wxNode *node = sm_handlers.First();
+ wxNode *node = sm_handlers.GetFirst();
while (node)
{
- wxImageHandler *handler = (wxImageHandler*)node->Data();
+ wxImageHandler *handler = (wxImageHandler*)node->GetData();
if ( (handler->GetExtension().Cmp(extension) == 0) &&
(bitmapType == -1 || handler->GetType() == bitmapType) )
return handler;
- node = node->Next();
+ node = node->GetNext();
}
- return (wxImageHandler*)NULL;
+ return 0;
}
wxImageHandler *wxImage::FindHandler( long bitmapType )
{
- wxNode *node = sm_handlers.First();
+ wxNode *node = sm_handlers.GetFirst();
while (node)
{
- wxImageHandler *handler = (wxImageHandler *)node->Data();
+ wxImageHandler *handler = (wxImageHandler *)node->GetData();
if (handler->GetType() == bitmapType) return handler;
- node = node->Next();
+ node = node->GetNext();
}
- return NULL;
+ return 0;
}
wxImageHandler *wxImage::FindHandlerMime( const wxString& mimetype )
{
- wxNode *node = sm_handlers.First();
+ wxNode *node = sm_handlers.GetFirst();
while (node)
{
- wxImageHandler *handler = (wxImageHandler *)node->Data();
+ wxImageHandler *handler = (wxImageHandler *)node->GetData();
if (handler->GetMimeType().IsSameAs(mimetype, FALSE)) return handler;
- node = node->Next();
+ node = node->GetNext();
}
- return NULL;
+ return 0;
}
void wxImage::InitStandardHandlers()
{
- AddHandler( new wxBMPHandler );
+#if wxUSE_STREAMS
+ AddHandler(new wxBMPHandler);
+#endif // wxUSE_STREAMS
}
void wxImage::CleanUpHandlers()
{
- wxNode *node = sm_handlers.First();
+ wxNode *node = sm_handlers.GetFirst();
while (node)
{
- wxImageHandler *handler = (wxImageHandler *)node->Data();
- wxNode *next = node->Next();
+ wxImageHandler *handler = (wxImageHandler *)node->GetData();
+ wxNode *next = node->GetNext();
delete handler;
delete node;
node = next;
return CanRead(stream);
}
- else {
- wxLogError( _("Can't check image format of file '%s': file does not exist."), name.c_str() );
+ wxLogError( _("Can't check image format of file '%s': file does not exist."), name.c_str() );
+
+ return FALSE;
+}
+bool wxImageHandler::CallDoCanRead(wxInputStream& stream)
+{
+ off_t posOld = stream.TellI();
+ if ( posOld == wxInvalidOffset )
+ {
+ // can't test unseekable stream
return FALSE;
}
-// return FALSE;
+
+ bool ok = DoCanRead(stream);
+
+ // restore the old position to be able to test other formats and so on
+ if ( stream.SeekI(posOld) == wxInvalidOffset )
+ {
+ wxLogDebug(_T("Failed to rewind the stream in wxImageHandler!"));
+
+ // reading would fail anyhow as we're not at the right position
+ return FALSE;
+ }
+
+ return ok;
}
#endif // wxUSE_STREAMS
//-----------------------------------------------------------------------------
-// wxBitmap convertion routines
+// Deprecated wxBitmap conversion routines
//-----------------------------------------------------------------------------
-#if wxUSE_GUI
+#if WXWIN_COMPATIBILITY_2_2 && wxUSE_GUI
#ifdef __WXGTK__
wxBitmap wxImage::ConvertToMonoBitmap( unsigned char red, unsigned char green, unsigned char blue ) const
*this = bitmap.ConvertToImage();
}
-#endif
-
-
-
-// A module to allow wxImage initialization/cleanup
-// without calling these functions from app.cpp or from
-// the user's application.
-
-class wxImageModule: public wxModule
-{
-DECLARE_DYNAMIC_CLASS(wxImageModule)
-public:
- wxImageModule() {}
- bool OnInit() { wxImage::InitStandardHandlers(); return TRUE; };
- void OnExit() { wxImage::CleanUpHandlers(); };
-};
-
-IMPLEMENT_DYNAMIC_CLASS(wxImageModule, wxModule)
+#endif // WXWIN_COMPATIBILITY_2_2 && wxUSE_GUI
//-----------------------------------------------------------------------------
// less, in this case it would be invoked as CountColours(256)). Default
// value for stopafter is -1 (don't care).
//
-unsigned long wxImage::CountColours( unsigned long stopafter )
+unsigned long wxImage::CountColours( unsigned long stopafter ) const
{
wxHashTable h;
wxObject dummy;
- unsigned char r, g, b, *p;
+ unsigned char r, g, b;
+ unsigned char *p;
unsigned long size, nentries, key;
p = GetData();
}
-// GRG, Dic/99
-// Computes the histogram of the image and fills a hash table, indexed
-// with integer keys built as 0xRRGGBB, containing wxHNode objects. Each
-// wxHNode contains an 'index' (useful to build a palette with the image
-// colours) and a 'value', which is the number of pixels in the image with
-// that colour.
-//
-unsigned long wxImage::ComputeHistogram( wxHashTable &h )
+unsigned long wxImage::ComputeHistogram( wxImageHistogram &h ) const
{
- unsigned char r, g, b, *p;
+ unsigned char r, g, b;
+ unsigned char *p;
unsigned long size, nentries, key;
- wxHNode *hnode;
+
+ h.clear();
p = GetData();
size = GetWidth() * GetHeight();
b = *(p++);
key = (r << 16) | (g << 8) | b;
- hnode = (wxHNode *) h.Get(key);
-
- if (hnode)
- hnode->value++;
- else
- {
- hnode = new wxHNode();
- hnode->index = nentries++;
- hnode->value = 1;
-
- h.Put(key, (wxObject *)hnode);
- }
+ wxImageHistogramEntry& entry = h[key];
+ if ( entry.value++ == 0 )
+ entry.index = nentries++;
}
return nentries;
return rotated;
}
+
+
+
+
+// A module to allow wxImage initialization/cleanup
+// without calling these functions from app.cpp or from
+// the user's application.
+
+class wxImageModule: public wxModule
+{
+DECLARE_DYNAMIC_CLASS(wxImageModule)
+public:
+ wxImageModule() {}
+ bool OnInit() { wxImage::InitStandardHandlers(); return TRUE; };
+ void OnExit() { wxImage::CleanUpHandlers(); };
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxImageModule, wxModule)
+
+
+#endif // wxUSE_IMAGE
projects / wxWidgets.git / blobdiff