X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/279338910fbf9be5229ec2ece0a896c71cc004f4..6f349458f6903083bd967f52624a5e639733ad5d:/src/common/image.cpp diff --git a/src/common/image.cpp b/src/common/image.cpp index 69b1f52036..ab36e52be6 100644 --- a/src/common/image.cpp +++ b/src/common/image.cpp @@ -15,7 +15,7 @@ #include "wx/wxprec.h" #ifdef __BORLANDC__ -#pragma hdrstop + #pragma hdrstop #endif #include "wx/image.h" @@ -32,13 +32,11 @@ #include #ifdef __SALFORDC__ -#ifdef FAR -#undef FAR -#endif + #undef FAR #endif #ifdef __WXMSW__ -#include + #include "wx/msw/private.h" #endif //----------------------------------------------------------------------------- @@ -49,8 +47,8 @@ class wxImageRefData: public wxObjectRefData { public: - wxImageRefData(void); - ~wxImageRefData(void); + wxImageRefData(); + ~wxImageRefData(); int m_width; int m_height; @@ -60,7 +58,7 @@ public: bool m_ok; }; -wxImageRefData::wxImageRefData(void) +wxImageRefData::wxImageRefData() { m_width = 0; m_height = 0; @@ -72,7 +70,7 @@ wxImageRefData::wxImageRefData(void) m_hasMask = FALSE; } -wxImageRefData::~wxImageRefData(void) +wxImageRefData::~wxImageRefData() { if (m_data) free( m_data ); } @@ -84,7 +82,7 @@ wxList wxImage::sm_handlers; #define M_IMGDATA ((wxImageRefData *)m_refData) #if !USE_SHARED_LIBRARIES -IMPLEMENT_DYNAMIC_CLASS(wxImage, wxObject) + IMPLEMENT_DYNAMIC_CLASS(wxImage, wxObject) #endif wxImage::wxImage() @@ -152,7 +150,7 @@ void wxImage::Destroy() UnRef(); } -wxImage wxImage::Scale( int width, int height ) +wxImage wxImage::Scale( int width, int height ) const { wxImage image; @@ -191,6 +189,43 @@ wxImage wxImage::Scale( int width, int height ) return image; } +wxImage wxImage::GetSubImage( const wxRect &rect ) const +{ + wxImage image; + + wxCHECK_MSG( Ok(), image, _T("invalid image") ); + + wxCHECK_MSG( (rect.GetLeft()>=0) && (rect.GetTop()>=0) && (rect.GetRight()<=GetWidth()) && (rect.GetBottom()<=GetHeight()) + , image, _T("invalid subimage size") ); + + int subwidth=rect.GetWidth(); + const int subheight=rect.GetHeight(); + + image.Create( subwidth, subheight ); + + char unsigned *subdata = image.GetData(), *data=GetData(); + + wxCHECK_MSG( subdata, image, _T("unable to create image") ); + + if (M_IMGDATA->m_hasMask) + image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue ); + + const int subleft=3*rect.GetLeft(); + const int width=3*GetWidth(); + subwidth*=3; + + data+=rect.GetTop()*width+subleft; + + for (long j = 0; j < subheight; ++j) + { + memcpy( subdata, data, subwidth); + subdata+=subwidth; + data+=width; + } + + return image; +} + void wxImage::SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned char b ) { wxCHECK_RET( Ok(), _T("invalid image") ); @@ -265,7 +300,20 @@ void wxImage::SetData( char unsigned *data ) { wxCHECK_RET( Ok(), _T("invalid image") ); - memcpy(M_IMGDATA->m_data, data, M_IMGDATA->m_width * M_IMGDATA->m_height * 3); + wxImageRefData *newRefData = new wxImageRefData(); + + newRefData->m_width = M_IMGDATA->m_width; + newRefData->m_height = M_IMGDATA->m_height; + newRefData->m_data = data; + newRefData->m_ok = TRUE; + newRefData->m_maskRed = M_IMGDATA->m_maskRed; + newRefData->m_maskGreen = M_IMGDATA->m_maskGreen; + newRefData->m_maskBlue = M_IMGDATA->m_maskBlue; + newRefData->m_hasMask = M_IMGDATA->m_hasMask; + + UnRef(); + + m_refData = newRefData; } void wxImage::SetMaskColour( unsigned char r, unsigned char g, unsigned char b ) @@ -390,13 +438,32 @@ bool wxImage::SaveFile( const wxString& filename, const wxString& mimetype ) } #if wxUSE_STREAMS + bool wxImage::LoadFile( wxInputStream& stream, long type ) { UnRef(); m_refData = new wxImageRefData; - wxImageHandler *handler = FindHandler(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->LoadFile( this, stream ); + + } + + wxLogWarning( _T("No handler found for this image.") ); + return FALSE; + } + + handler = FindHandler(type); if (handler == NULL) { @@ -540,7 +607,7 @@ wxImageHandler *wxImage::FindHandlerMime( const wxString& mimetype ) void wxImage::InitStandardHandlers() { - AddHandler( new wxBMPHandler ); + AddHandler( new wxBMPHandler ); } void wxImage::CleanUpHandlers() @@ -565,381 +632,61 @@ IMPLEMENT_DYNAMIC_CLASS(wxImageHandler,wxObject) #endif #if wxUSE_STREAMS -bool wxImageHandler::LoadFile( wxImage *WXUNUSED(image), wxInputStream& WXUNUSED(stream) ) +bool wxImageHandler::LoadFile( wxImage *WXUNUSED(image), wxInputStream& WXUNUSED(stream), bool WXUNUSED(verbose) ) { return FALSE; } -bool wxImageHandler::SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream) ) +bool wxImageHandler::SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream), bool WXUNUSED(verbose) ) { return FALSE; } -#endif // wxUSE_STREAMS - -//----------------------------------------------------------------------------- -// wxBMPHandler -//----------------------------------------------------------------------------- - -#if !USE_SHARED_LIBRARIES -IMPLEMENT_DYNAMIC_CLASS(wxBMPHandler,wxImageHandler) -#endif - -#if wxUSE_STREAMS - -#ifndef BI_RGB -#define BI_RGB 0 -#define BI_RLE8 1 -#define BI_RLE4 2 -#endif - -#ifndef BI_BITFIELDS -#define BI_BITFIELDS 3 -#endif -#define poffset (line * width * 3 + column * 3) - -bool wxBMPHandler::LoadFile( wxImage *image, wxInputStream& stream ) +bool wxImageHandler::CanRead( wxInputStream& stream ) { - int rshift = 0, gshift = 0, bshift = 0; - wxUint8 aByte; - wxUint16 aWord; - wxInt32 dbuf[4], aDword, - rmask = 0, gmask = 0, bmask = 0; - wxInt8 bbuf[4]; - struct _cmap { - unsigned char r, g, b; - } *cmap = NULL; - - off_t start_offset = stream.TellI(); - - image->Destroy(); - - /* - * Read the BMP header - */ - - stream.Read( &bbuf, 2 ); - stream.Read( dbuf, 4 * 4 ); - - wxInt32 size = wxINT32_SWAP_FROM_LE( dbuf[0] ); - wxInt32 offset = wxINT32_SWAP_FROM_LE( dbuf[2] ); - - stream.Read(dbuf, 4 * 2); - int width = (int)wxINT32_SWAP_FROM_LE( dbuf[0] ); - int height = (int)wxINT32_SWAP_FROM_LE( dbuf[1] ); - if (width > 32767) - { - wxLogError( _T("Image width > 32767 pixels for file.") ); - return FALSE; - } - if (height > 32767) - { - wxLogError( _T("Image height > 32767 pixels for file.") ); - return FALSE; - } - - stream.Read( &aWord, 2 ); -/* - TODO - int planes = (int)wxUINT16_SWAP_FROM_LE( aWord ); -*/ - stream.Read( &aWord, 2 ); - int bpp = (int)wxUINT16_SWAP_FROM_LE( aWord ); - if (bpp != 1 && bpp != 4 && bpp != 8 && bpp != 16 && bpp != 24 && bpp != 32) - { - wxLogError( _T("unknown bitdepth in file.") ); - return FALSE; - } - - stream.Read( dbuf, 4 * 4 ); - int comp = (int)wxINT32_SWAP_FROM_LE( dbuf[0] ); - if (comp != BI_RGB && comp != BI_RLE4 && comp != BI_RLE8 && comp != BI_BITFIELDS) - { - wxLogError( _T("unknown encoding in Windows BMP file.") ); - return FALSE; - } - - stream.Read( dbuf, 4 * 2 ); - int ncolors = (int)wxINT32_SWAP_FROM_LE( dbuf[0] ); - if (ncolors == 0) - ncolors = 1 << bpp; - /* some more sanity checks */ - if (((comp == BI_RLE4) && (bpp != 4)) || - ((comp == BI_RLE8) && (bpp != 8)) || - ((comp == BI_BITFIELDS) && (bpp != 16 && bpp != 32))) - { - wxLogError( _T("encoding of BMP doesn't match bitdepth.") ); - return FALSE; - } - if (bpp < 16) - { - cmap = (struct _cmap *)malloc(sizeof(struct _cmap) * ncolors); - if (!cmap) - { - wxLogError( _T("Cannot allocate RAM for color map in BMP file.") ); - return FALSE; - } - } - else - cmap = NULL; + return FALSE; +} - image->Create( width, height ); - unsigned char *ptr = image->GetData(); - if (!ptr) +bool wxImageHandler::CanRead( const wxString& name ) +{ +#if wxUSE_STREAMS + if (wxFileExists(name)) { - wxLogError( _T("Cannot allocate RAM for RGB data in file.") ); - if (cmap) - free(cmap); - return FALSE; + wxFileInputStream stream(name); + return CanRead(stream); } - /* - * Reading the palette, if it exists. - */ - if (bpp < 16 && ncolors != 0) - { - for (int j = 0; j < ncolors; j++) - { - stream.Read( bbuf, 4 ); - cmap[j].b = bbuf[0]; - cmap[j].g = bbuf[1]; - cmap[j].r = bbuf[2]; - } - } - else if (bpp == 16 || bpp == 32) - { - if (comp == BI_BITFIELDS) - { - int bit = 0; - stream.Read( dbuf, 4 * 3 ); - bmask = wxINT32_SWAP_FROM_LE( dbuf[0] ); - gmask = wxINT32_SWAP_FROM_LE( dbuf[1] ); - rmask = wxINT32_SWAP_FROM_LE( dbuf[2] ); - /* find shift amount.. ugly, but i can't think of a better way */ - for (bit = 0; bit < bpp; bit++) - { - if (bmask & (1 << bit)) - bshift = bit; - if (gmask & (1 << bit)) - gshift = bit; - if (rmask & (1 << bit)) - rshift = bit; - } - } - else if (bpp == 16) - { - rmask = 0x7C00; - gmask = 0x03E0; - bmask = 0x001F; - rshift = 10; - gshift = 5; - bshift = 0; - } - else if (bpp == 32) - { - rmask = 0x00FF0000; - gmask = 0x0000FF00; - bmask = 0x000000FF; - rshift = 16; - gshift = 8; - bshift = 0; - } - } - - /* - * Reading the image data - */ - stream.SeekI( start_offset + offset ); - unsigned char *data = ptr; + else { + wxLogError( _T("Can't check image format of file '%s': file does not exist."), name.c_str() ); - /* set the whole image to the background color */ - if (bpp < 16 && (comp == BI_RLE4 || comp == BI_RLE8)) - { - for (int i = 0; i < width * height; i++) - { - *ptr++ = cmap[0].r; - *ptr++ = cmap[0].g; - *ptr++ = cmap[0].b; - } - ptr = data; + return FALSE; } - - int line = 0; - int column = 0; - int linesize = ((width * bpp + 31) / 32) * 4; +#else // !wxUSE_STREAMS + return FALSE; +#endif // wxUSE_STREAMS +} - /* BMPs are stored upside down */ - for (line = (height - 1); line >= 0; line--) - { - int linepos = 0; - for (column = 0; column < width;) - { - if (bpp < 16) - { - int index = 0; - linepos++; - aByte = stream.GetC(); - if (bpp == 1) - { - int bit = 0; - for (bit = 0; bit < 8; bit++) - { - index = ((aByte & (0x80 >> bit)) ? 1 : 0); - ptr[poffset] = cmap[index].r; - ptr[poffset + 1] = cmap[index].g; - ptr[poffset + 2] = cmap[index].b; - column++; - } - } - else if (bpp == 4) - { - if (comp == BI_RLE4) - { - wxLogError( _T("Can't deal with 4bit encoded yet.") ); - image->Destroy(); - free(cmap); - return FALSE; - } - else - { - int nibble = 0; - for (nibble = 0; nibble < 2; nibble++) - { - index = ((aByte & (0xF0 >> nibble * 4)) >> (!nibble * 4)); - if (index >= 16) - index = 15; - ptr[poffset] = cmap[index].r; - ptr[poffset + 1] = cmap[index].g; - ptr[poffset + 2] = cmap[index].b; - column++; - } - } - } - else if (bpp == 8) - { - if (comp == BI_RLE8) - { - unsigned char first; - first = aByte; - aByte = stream.GetC(); - if (first == 0) - { - if (aByte == 0) - { - /* column = width; */ - } - else if (aByte == 1) - { - column = width; - line = -1; - } - else if (aByte == 2) - { - aByte = stream.GetC(); - column += aByte; - linepos = column * bpp / 8; - aByte = stream.GetC(); - line += aByte; - } - else - { - int absolute = aByte; - for (int k = 0; k < absolute; k++) - { - linepos++; - aByte = stream.GetC(); - ptr[poffset ] = cmap[aByte].r; - ptr[poffset + 1] = cmap[aByte].g; - ptr[poffset + 2] = cmap[aByte].b; - column++; - } - if (absolute & 0x01) - aByte = stream.GetC(); - } - } - else - { - for (int l = 0; l < first; l++) - { - ptr[poffset ] = cmap[aByte].r; - ptr[poffset + 1] = cmap[aByte].g; - ptr[poffset + 2] = cmap[aByte].b; - column++; - linepos++; - } - } - } - else - { - ptr[poffset ] = cmap[aByte].r; - ptr[poffset + 1] = cmap[aByte].g; - ptr[poffset + 2] = cmap[aByte].b; - column++; - linepos += size; - } - } - } - else if (bpp == 24) - { - stream.Read( &bbuf, 3 ); - linepos += 3; - ptr[poffset ] = (unsigned char)bbuf[2]; - ptr[poffset + 1] = (unsigned char)bbuf[1]; - ptr[poffset + 2] = (unsigned char)bbuf[0]; - column++; - } - else if (bpp == 16) - { - unsigned char temp; - stream.Read( &aWord, 2 ); - aWord = wxUINT16_SWAP_FROM_LE( aWord ); - linepos += 2; - temp = (aWord & rmask) >> rshift; - ptr[poffset] = temp; - temp = (aWord & gmask) >> gshift; - ptr[poffset + 1] = temp; - temp = (aWord & bmask) >> gshift; - ptr[poffset + 2] = temp; - column++; - } - else - { - unsigned char temp; - stream.Read( &aDword, 4 ); - aDword = wxINT32_SWAP_FROM_LE( aDword ); - linepos += 4; - temp = (aDword & rmask) >> rshift; - ptr[poffset] = temp; - temp = (aDword & gmask) >> gshift; - ptr[poffset + 1] = temp; - temp = (aDword & bmask) >> bshift; - ptr[poffset + 2] = temp; - column++; - } - } - while ((linepos < linesize) && (comp != 1) && (comp != 2)) - { - stream.Read( &aByte, 1 ); - linepos += 1; - if (stream.LastError() != wxStream_NOERROR) - break; - } - } - if (cmap) - free(cmap); - image->SetMask( FALSE ); - return TRUE; -} #endif // wxUSE_STREAMS +//----------------------------------------------------------------------------- +// MSW conversion routines +//----------------------------------------------------------------------------- + #ifdef __WXMSW__ wxBitmap wxImage::ConvertToBitmap() const { + if ( !Ok() ) + return wxNullBitmap; + // sizeLimit is the MS upper limit for the DIB size +#ifdef WIN32 int sizeLimit = 1024*768*3; +#else + int sizeLimit = 0x7fff ; +#endif // width and height of the device-dependent bitmap int width = GetWidth(); @@ -948,11 +695,11 @@ wxBitmap wxImage::ConvertToBitmap() const // calc the number of bytes per scanline and padding int bytePerLine = width*3; int sizeDWORD = sizeof( DWORD ); - div_t lineBoundary = div( bytePerLine, sizeDWORD ); + int lineBoundary = bytePerLine % sizeDWORD; int padding = 0; - if( lineBoundary.rem > 0 ) + if( lineBoundary > 0 ) { - padding = sizeDWORD - lineBoundary.rem; + padding = sizeDWORD - lineBoundary; bytePerLine += padding; } // calc the number of DIBs and heights of DIBs @@ -963,9 +710,8 @@ wxBitmap wxImage::ConvertToBitmap() const height = bmpHeight; else { - div_t result = div( bmpHeight, height ); - numDIB = result.quot; - hRemain = result.rem; + numDIB = bmpHeight / height; + hRemain = bmpHeight % height; if( hRemain >0 ) numDIB++; } @@ -1161,11 +907,11 @@ wxImage::wxImage( const wxBitmap &bitmap ) // calc the number of bytes per scanline and padding in the DIB int bytePerLine = width*3; int sizeDWORD = sizeof( DWORD ); - div_t lineBoundary = div( bytePerLine, sizeDWORD ); + int lineBoundary = bytePerLine % sizeDWORD; int padding = 0; - if( lineBoundary.rem > 0 ) + if( lineBoundary > 0 ) { - padding = sizeDWORD - lineBoundary.rem; + padding = sizeDWORD - lineBoundary; bytePerLine += padding; } @@ -1269,6 +1015,10 @@ wxImage::wxImage( const wxBitmap &bitmap ) #endif +//----------------------------------------------------------------------------- +// GTK conversion routines +//----------------------------------------------------------------------------- + #ifdef __WXGTK__ #include "gtk/gtk.h" @@ -1296,7 +1046,7 @@ wxBitmap wxImage::ConvertToBitmap() const // Retrieve depth GdkVisual *visual = gdk_window_get_visual( bitmap.GetPixmap() ); - if (visual == NULL) visual = gdk_window_get_visual( (GdkWindow*) &gdk_root_parent ); + if (visual == NULL) visual = gdk_visual_get_system(); int bpp = visual->depth; bitmap.SetDepth( bpp ); @@ -1531,7 +1281,8 @@ wxImage::wxImage( const wxBitmap &bitmap ) { for (int i = 0; i < bitmap.GetWidth(); i++) { - int pixel = gdk_image_get_pixel( gdk_image, i, j ); + wxInt32 pixel = gdk_image_get_pixel( gdk_image, i, j ); + pixel = wxINT32_SWAP_ON_BE( pixel ); if (bpp <= 8) { data[pos] = cmap->colors[pixel].red >> 8; @@ -1575,6 +1326,10 @@ wxImage::wxImage( const wxBitmap &bitmap ) #endif +//----------------------------------------------------------------------------- +// Motif conversion routines +//----------------------------------------------------------------------------- + #ifdef __WXMOTIF__ #include @@ -1833,7 +1588,7 @@ wxImage::wxImage( const wxBitmap &bitmap ) vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem ); - wxCHECK_MSG( vi, wxNullBitmap, _T("no visual") ); + wxCHECK_RET( vi, _T("no visual") ); if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;