UnRef();
}
-wxImage wxImage::Scale( int width, int height )
+wxImage wxImage::Scale( int width, int height ) const
{
wxImage image;
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") );
{
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 )
}
#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)
{
void wxImage::InitStandardHandlers()
{
- AddHandler( new wxBMPHandler );
+ AddHandler( new wxBMPHandler );
}
void wxImage::CleanUpHandlers()
#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 WXUNUSED(verbose) )
{
return FALSE;
}
-bool wxImageHandler::SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream) )
+bool wxImageHandler::CanRead( wxInputStream& stream )
{
return FALSE;
}
+
+bool wxImageHandler::CanRead( const wxString& name )
+{
+#if wxUSE_STREAMS
+ if (wxFileExists(name))
+ {
+ wxFileInputStream stream(name);
+ return CanRead(stream);
+ }
+
+ else {
+ wxLogError( _T("Can't check image format of file '%s': file does not exist."), name.c_str() );
+
+ return FALSE;
+ }
+#else // !wxUSE_STREAMS
+ return FALSE;
+#endif // wxUSE_STREAMS
+}
+
+
+
#endif // wxUSE_STREAMS
//-----------------------------------------------------------------------------
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();
// 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
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++;
}
// 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;
}
// 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 );
{
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;
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;
projects / wxWidgets.git / blobdiff