X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b1699cd397f7db0193491c8498608578b43db12b..109c7768eb46ccbb45adc1c409fe8f6b7d799e2f:/src/common/image.cpp diff --git a/src/common/image.cpp b/src/common/image.cpp index f98926b073..3241ed03cd 100644 --- a/src/common/image.cpp +++ b/src/common/image.cpp @@ -131,6 +131,7 @@ wxImage::wxImage( wxInputStream& stream, const wxString& mimetype, int index ) #endif // wxUSE_STREAMS wxImage::wxImage( const wxImage& image ) + : wxObject() { Ref(image); } @@ -198,8 +199,8 @@ wxImage wxImage::Copy() const 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 ); @@ -820,248 +821,6 @@ bool wxImage::SetMaskFromImage(const wxImage& mask, return TRUE; } - -// DoFloodFill -// Fills with the colour extracted from fillBrush, starting at x,y until either -// a color different from the start pixel is reached (wxFLOOD_SURFACE) -// or fill color is reached (wxFLOOD_BORDER) - -bool wxImage::MatchPixel(int x, int y, int w, int h, const wxColour & c) -{ - if ((x<0)||(x>=w)||(y<0)||(y>=h)) return false; - - unsigned char r = GetRed(x,y); - unsigned char g = GetGreen(x,y); - unsigned char b = GetBlue(x,y); - return c.Red() == r && c.Green() == g && c.Blue() == b ; -} - -bool wxImage::MatchBoundaryPixel(int x, int y, int w, int h, const wxColour & fill, const wxColour & bound) -{ - if ((x<0)||(x>=w)||(y<0)||(y>=h)) return TRUE; - - unsigned char r = GetRed(x,y); - unsigned char g = GetGreen(x,y); - unsigned char b = GetBlue(x,y); - if ( fill.Red() == r && fill.Green() == g && fill.Blue() == b ) return TRUE; - if ( bound.Red() == r && bound.Green() == g && bound.Blue() == b ) return TRUE; - return FALSE ; -} - - -void wxImage::DoFloodFill (wxCoord x, wxCoord y, const wxBrush & fillBrush, - const wxColour& testColour, int style /*=wxFLOOD_SURFACE */, - int LogicalFunction /*= wxCOPY, currently unused */) -{ - /* A diamond flood-fill using a circular queue system. - Each pixel surrounding the current pixel is added to - the queue if it meets the criteria, then is retrieved in - its turn. Code originally based on http://www.drawit.co.nz/Developers.htm */ - - int width = GetWidth(); - int height = GetHeight(); - - //Draw using a pen made from the current brush colour - //Potentially allows us to use patterned flood fills in future code - wxColour fillColour = fillBrush.GetColour(); - unsigned char r = fillColour.Red(); - unsigned char g = fillColour.Green(); - unsigned char b = fillColour.Blue(); - - //initial test : - if (style == wxFLOOD_SURFACE) - { - //if wxFLOOD_SURFACE, if fill colour is same as required, we don't do anything - if ( GetRed(x,y) != r - || GetGreen(x,y) != g - || GetBlue (x,y) != b ) - { - //prepare memory for queue - //queue save, start, read - size_t *qs, *qst, *qr; - - //queue size (physical) - long qSz= height * width * 2; - qst = new size_t [qSz]; - - //temporary x and y locations - int xt, yt; - - for (int i=0; i < qSz; i++) - qst[i] = 0; - - // start queue - qs=qr=qst; - *qs=xt=x; - qs++; - *qs=yt=y; - qs++; - - SetRGB(xt,yt,r,g,b); - - //Main queue loop - while(qr!=qs) - { - //Add new members to queue - //Above current pixel - if(MatchPixel(xt,yt-1,width,height,testColour)) - { - *qs=xt; - qs++; - *qs=yt-1; - qs++; - SetRGB(xt,yt-1,r,g,b); - - //Loop back to beginning of queue - if(qs>=(qst+qSz)) qs=qst; - } - - //Below current pixel - if(MatchPixel(xt,yt+1,width,height,testColour)) - { - *qs=xt; - qs++; - *qs=yt+1; - qs++; - SetRGB(xt,yt+1,r,g,b); - if(qs>=(qst+qSz)) qs=qst; - } - - //Left of current pixel - if(MatchPixel(xt-1,yt,width,height,testColour)) - { - *qs=xt-1; - qs++; - *qs=yt; - qs++; - SetRGB(xt-1,yt,r,g,b); - if(qs>=(qst+qSz)) qs=qst; - } - - //Right of current pixel - if(MatchPixel(xt+1,yt,width,height,testColour)) - { - *qs=xt+1; - qs++; - *qs=yt; - qs++; - SetRGB(xt+1,yt,r,g,b); - if(qs>=(qst+qSz)) qs=qst; - } - - //Retrieve current queue member - qr+=2; - - //Loop back to the beginning - if(qr>=(qst+qSz)) qr=qst; - xt=*qr; - yt=*(qr+1); - - //Go Back to beginning of loop - } - - delete [] qst ; - } - } - else - { - //style is wxFLOOD_BORDER - // fill up to testColor border - if already testColour don't do anything - if ( GetRed(x,y) != testColour.Red() - || GetGreen(x,y) != testColour.Green() - || GetBlue(x,y) != testColour.Blue() ) - { - //prepare memory for queue - //queue save, start, read - size_t *qs, *qst, *qr; - - //queue size (physical) - long qSz= height * width * 2; - qst = new size_t [qSz]; - - //temporary x and y locations - int xt, yt; - - for (int i=0; i < qSz; i++) - qst[i] = 0; - - // start queue - qs=qr=qst; - *qs=xt=x; - qs++; - *qs=yt=y; - qs++; - - SetRGB(xt,yt,r,g,b); - - //Main queue loop - while(qr!=qs) - { - //Add new members to queue - //Above current pixel - if(!MatchBoundaryPixel(xt,yt-1,width,height,fillColour,testColour)) - { - *qs=xt; - qs++; - *qs=yt-1; - qs++; - SetRGB(xt,yt-1,r,g,b); - - //Loop back to beginning of queue - if(qs>=(qst+qSz)) qs=qst; - } - - //Below current pixel - if(!MatchBoundaryPixel(xt,yt+1,width,height,fillColour,testColour)) - { - *qs=xt; - qs++; - *qs=yt+1; - qs++; - SetRGB(xt,yt+1,r,g,b); - if(qs>=(qst+qSz)) qs=qst; - } - - //Left of current pixel - if(!MatchBoundaryPixel(xt-1,yt,width,height,fillColour,testColour)) - { - *qs=xt-1; - qs++; - *qs=yt; - qs++; - SetRGB(xt-1,yt,r,g,b); - if(qs>=(qst+qSz)) qs=qst; - } - - //Right of current pixel - if(!MatchBoundaryPixel(xt+1,yt,width,height,fillColour,testColour)) - { - *qs=xt+1; - qs++; - *qs=yt; - qs++; - SetRGB(xt+1,yt,r,g,b); - if(qs>=(qst+qSz)) qs=qst; - } - - //Retrieve current queue member - qr+=2; - - //Loop back to the beginning - if(qr>=(qst+qSz)) qr=qst; - xt=*qr; - yt=*(qr+1); - - //Go Back to beginning of loop - } - - delete [] qst ; - } - } - //all done, -} - - #if wxUSE_PALETTE // Palette functions @@ -1256,7 +1015,7 @@ int wxImage::GetImageCount( const wxString &name, long type ) bool wxImage::CanRead( wxInputStream &stream ) { - wxList &list=GetHandlers(); + const wxList& list = GetHandlers(); for ( wxList::Node *node = list.GetFirst(); node; node = node->GetNext() ) { @@ -1527,12 +1286,32 @@ bool wxImageHandler::CanRead( const wxString& name ) 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; + } + + 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 FALSE; + + return ok; } #endif // wxUSE_STREAMS