#include "wx/wfstream.h"
#include "wx/intl.h"
#include "wx/module.h"
+#include "wx/hash.h"
// For memcpy
#include <string.h>
{
public:
wxImageRefData();
- ~wxImageRefData();
+ virtual ~wxImageRefData();
int m_width;
int m_height;
unsigned char *m_data;
+
bool m_hasMask;
unsigned char m_maskRed,m_maskGreen,m_maskBlue;
+
+ // alpha channel data, may be NULL for the formats without alpha support
+ unsigned char *m_alpha;
+
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()
{
m_width = 0;
m_height = 0;
- m_data = (unsigned char*) NULL;
- m_ok = FALSE;
+ m_data =
+ m_alpha = (unsigned char *) NULL;
+
m_maskRed = 0;
m_maskGreen = 0;
m_maskBlue = 0;
m_hasMask = FALSE;
+
+ m_ok = FALSE;
m_static = FALSE;
}
wxImageRefData::~wxImageRefData()
{
- if (m_data && !m_static)
+ if ( !m_static )
free( m_data );
+
+ free(m_alpha);
}
wxList wxImage::sm_handlers;
image.Create( M_IMGDATA->m_width, M_IMGDATA->m_height );
- char unsigned *data = image.GetData();
+ unsigned char *data = image.GetData();
wxCHECK_MSG( data, image, wxT("unable to create image") );
return image;
}
+wxImage wxImage::ShrinkBy( int xFactor , int yFactor ) const
+{
+ if( xFactor == 1 && yFactor == 1 )
+ return Copy() ;
+
+ wxImage image;
+
+ wxCHECK_MSG( Ok(), image, wxT("invalid image") );
+
+ // can't scale to/from 0 size
+ wxCHECK_MSG( (xFactor > 0) && (yFactor > 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") );
+
+ long width = old_width / xFactor ;
+ long height = old_height / yFactor ;
+
+ image.Create( width , height );
+
+ char unsigned *data = image.GetData();
+
+ wxCHECK_MSG( data, image, wxT("unable to create image") );
+
+ bool hasMask = false ;
+ unsigned char maskRed = 0;
+ unsigned char maskGreen = 0;
+ unsigned char maskBlue =0 ;
+ if (M_IMGDATA->m_hasMask)
+ {
+ hasMask = true ;
+ maskRed = M_IMGDATA->m_maskRed;
+ maskGreen = M_IMGDATA->m_maskGreen;
+ maskBlue =M_IMGDATA->m_maskBlue ;
+
+ 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;
+
+ for (long y = 0; y < height; y++)
+ {
+ for (long x = 0; x < width; x++)
+ {
+ unsigned long avgRed = 0 ;
+ unsigned long avgGreen = 0;
+ unsigned long avgBlue = 0;
+ unsigned long counter = 0 ;
+ // determine average
+ for ( int y1 = 0 ; y1 < yFactor ; ++y1 )
+ {
+ long y_offset = (y * yFactor + y1) * old_width;
+ for ( int x1 = 0 ; x1 < xFactor ; ++x1 )
+ {
+ unsigned char *pixel = source_data + 3 * ( y_offset + x * xFactor + x1 ) ;
+ unsigned char red = pixel[0] ;
+ unsigned char green = pixel[1] ;
+ unsigned char blue = pixel[2] ;
+ if ( !hasMask || red != maskRed || green != maskGreen || blue != maskBlue )
+ {
+ avgRed += red ;
+ avgGreen += green ;
+ avgBlue += blue ;
+ counter++ ;
+ }
+ }
+ }
+ if ( counter == 0 )
+ {
+ *(target_data++) = M_IMGDATA->m_maskRed ;
+ *(target_data++) = M_IMGDATA->m_maskGreen ;
+ *(target_data++) = M_IMGDATA->m_maskBlue ;
+ }
+ else
+ {
+ *(target_data++) = avgRed / counter ;
+ *(target_data++) = avgGreen / counter ;
+ *(target_data++) = avgBlue / counter ;
+ }
+ }
+ }
+
+ // 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))/xFactor);
+ if ( HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y) )
+ image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y,
+ (GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y))/yFactor);
+
+ return image;
+}
+
wxImage wxImage::Scale( int width, int height ) const
{
wxImage image;
wxCHECK_MSG( (old_height > 0) && (old_width > 0), image,
wxT("invalid old image size") );
+ if ( old_width % width == 0 && old_width >= width &&
+ old_height % height == 0 && old_height >= height )
+ {
+ return ShrinkBy( old_width / width , old_height / height ) ;
+ }
image.Create( width, height );
- char unsigned *data = image.GetData();
+ unsigned char *data = image.GetData();
wxCHECK_MSG( data, image, wxT("unable to create image") );
M_IMGDATA->m_maskBlue );
}
- char unsigned *source_data = M_IMGDATA->m_data;
- char unsigned *target_data = data;
+ unsigned char *source_data = M_IMGDATA->m_data;
+ unsigned char *target_data = data;
#if 0
// This is nonsense, RR.
image.Create( M_IMGDATA->m_height, M_IMGDATA->m_width );
- char unsigned *data = image.GetData();
+ unsigned char *data = image.GetData();
wxCHECK_MSG( data, image, wxT("unable to create image") );
long height = M_IMGDATA->m_height;
long width = M_IMGDATA->m_width;
- char unsigned *source_data = M_IMGDATA->m_data;
- char unsigned *target_data;
+ unsigned char *source_data = M_IMGDATA->m_data;
+ unsigned char *target_data;
for (long j = 0; j < height; j++)
{
image.Create( M_IMGDATA->m_width, M_IMGDATA->m_height );
- char unsigned *data = image.GetData();
+ unsigned char *data = image.GetData();
wxCHECK_MSG( data, image, wxT("unable to create image") );
long height = M_IMGDATA->m_height;
long width = M_IMGDATA->m_width;
- char unsigned *source_data = M_IMGDATA->m_data;
- char unsigned *target_data;
+ unsigned char *source_data = M_IMGDATA->m_data;
+ unsigned char *target_data;
if (horizontally)
{
image.Create( subwidth, subheight );
- char unsigned *subdata = image.GetData(), *data=GetData();
+ unsigned char *subdata = image.GetData(), *data=GetData();
wxCHECK_MSG( subdata, image, wxT("unable to create image") );
{
wxCHECK_RET( Ok(), wxT("invalid image") );
- char unsigned *data = GetData();
+ unsigned char *data = GetData();
const int w = GetWidth();
const int h = GetHeight();
image.Create( M_IMGDATA->m_width, M_IMGDATA->m_height );
- char unsigned *data = image.GetData();
+ unsigned char *data = image.GetData();
wxCHECK_MSG( data, image, wxT("unable to create image") );
long size = M_IMGDATA->m_height * M_IMGDATA->m_width;
- char unsigned *srcd = M_IMGDATA->m_data;
- char unsigned *tard = image.GetData();
+ unsigned char *srcd = M_IMGDATA->m_data;
+ unsigned char *tard = image.GetData();
for ( long i = 0; i < size; i++, srcd += 3, tard += 3 )
{
return data && data->m_ok && data->m_width && data->m_height;
}
-char unsigned *wxImage::GetData() const
+unsigned char *wxImage::GetData() const
{
- wxCHECK_MSG( Ok(), (char unsigned *)NULL, wxT("invalid image") );
+ wxCHECK_MSG( Ok(), (unsigned char *)NULL, wxT("invalid image") );
return M_IMGDATA->m_data;
}
-void wxImage::SetData( char unsigned *data )
+void wxImage::SetData( unsigned char *data )
{
wxCHECK_RET( Ok(), wxT("invalid image") );
m_refData = newRefData;
}
-void wxImage::SetData( char unsigned *data, int new_width, int new_height )
+void wxImage::SetData( unsigned char *data, int new_width, int new_height )
{
wxImageRefData *newRefData = new wxImageRefData();
m_refData = newRefData;
}
+// ----------------------------------------------------------------------------
+// alpha channel support
+// ----------------------------------------------------------------------------
+
+void wxImage::SetAlpha(int x, int y, unsigned char alpha)
+{
+ wxCHECK_RET( Ok() && HasAlpha(), wxT("invalid image or no alpha channel") );
+
+ int w = M_IMGDATA->m_width,
+ h = M_IMGDATA->m_height;
+
+ wxCHECK_RET( x >=0 && y >= 0 && x < w && y < h, wxT("invalid image index") );
+
+ M_IMGDATA->m_alpha[y*w + x] = alpha;
+}
+
+unsigned char wxImage::GetAlpha(int x, int y)
+{
+ wxCHECK_MSG( Ok() && HasAlpha(), 0, wxT("invalid image or no alpha channel") );
+
+ int w = M_IMGDATA->m_width,
+ h = M_IMGDATA->m_height;
+
+ wxCHECK_MSG( x >=0 && y >= 0 && x < w && y < h, 0, wxT("invalid image index") );
+
+ return M_IMGDATA->m_alpha[y*w + x];
+}
+
+void wxImage::SetAlpha( unsigned char *alpha )
+{
+ wxCHECK_RET( Ok(), wxT("invalid image") );
+
+ if ( !alpha )
+ {
+ alpha = (unsigned char *)
+ malloc(M_IMGDATA->m_width*M_IMGDATA->m_height*3);
+ }
+
+ delete [] M_IMGDATA->m_alpha;
+ M_IMGDATA->m_alpha = alpha;
+}
+
+unsigned char *wxImage::GetAlpha() const
+{
+ wxCHECK_MSG( Ok(), (unsigned char *)NULL, wxT("invalid image") );
+
+ return M_IMGDATA->m_alpha;
+}
+
+// ----------------------------------------------------------------------------
+// mask support
+// ----------------------------------------------------------------------------
+
void wxImage::SetMaskColour( unsigned char r, unsigned char g, unsigned char b )
{
wxCHECK_RET( Ok(), wxT("invalid image") );
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,
+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") );
+ 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") );
+ wxLogError( _("No Unused Color in image being masked") );
return FALSE ;
}
-
- char unsigned *imgdata = GetData();
- char unsigned *maskdata = mask.GetData();
+
+ unsigned char *imgdata = GetData();
+ unsigned char *maskdata = mask.GetData();
const int w = GetWidth();
const int h = GetHeight();
SetMaskColour(r, g, b);
SetMask(TRUE);
-
+
return TRUE;
}
bool wxImage::SaveFile( const wxString& filename ) const
{
wxString ext = filename.AfterLast('.').Lower();
-
+
wxImageHandler * pHandler = FindHandler(ext, -1);
if (pHandler)
{
{
#if wxUSE_STREAMS
wxFileInputStream stream(name);
- if (!stream.Ok())
- return 0;
- else
+ if (stream.Ok())
return GetImageCount(stream, type);
-#else
- return 0;
#endif
+
+ return 0;
}
#if wxUSE_STREAMS
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 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 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 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 0;
}
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;
#endif // WXWIN_COMPATIBILITY_2_2 && wxUSE_GUI
-//-----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
+// image histogram stuff
+// ----------------------------------------------------------------------------
+
+bool
+wxImageHistogram::FindFirstUnusedColour(unsigned char *r,
+ unsigned char *g,
+ unsigned char *b,
+ unsigned char r2,
+ unsigned char b2,
+ unsigned char g2) const
+{
+ unsigned long key = MakeKey(r2, g2, b2);
+
+ while ( find(key) != 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 = MakeKey(r2, g2, b2);
+ }
+
+ if ( r )
+ *r = r2;
+ if ( g )
+ *g = g2;
+ if ( b )
+ *b = b2;
+
+ return TRUE;
+}
+
+bool
+wxImage::FindFirstUnusedColour(unsigned char *r,
+ unsigned char *g,
+ unsigned char *b,
+ unsigned char r2,
+ unsigned char b2,
+ unsigned char g2) const
+{
+ wxImageHistogram histogram;
+
+ ComputeHistogram(histogram);
+
+ return histogram.FindFirstUnusedColour(r, g, b, r2, g2, b2);
+}
+
+
// GRG, Dic/99
// Counts and returns the number of different colours. Optionally stops
r = *(p++);
g = *(p++);
b = *(p++);
- key = (r << 16) | (g << 8) | b;
+ key = wxImageHistogram::MakeKey(r, g, b);
if (h.Get(key) == NULL)
{
unsigned long wxImage::ComputeHistogram( wxImageHistogram &h ) const
{
- unsigned char r, g, b;
- unsigned char *p;
- unsigned long size, nentries, key;
+ unsigned char *p = GetData();
+ unsigned long nentries = 0;
h.clear();
- p = GetData();
- size = GetWidth() * GetHeight();
- nentries = 0;
+ const unsigned long size = GetWidth() * GetHeight();
- for (unsigned long j = 0; j < size; j++)
+ unsigned char r, g, b;
+ for ( unsigned long n = 0; n < size; n++ )
{
- r = *(p++);
- g = *(p++);
- b = *(p++);
- key = (r << 16) | (g << 8) | b;
+ r = *p++;
+ g = *p++;
+ b = *p++;
+
+ wxImageHistogramEntry& entry = h[wxImageHistogram::MakeKey(r, g, b)];
- wxImageHistogramEntry& entry = h[key];
if ( entry.value++ == 0 )
entry.index = nentries++;
}
projects / wxWidgets.git / blobdiff