+ wxCHECK_MSG( subdata, image, wxT("unable to create image") );
+
+ if (src_alpha != NULL) {
+ image.SetAlpha();
+ subalpha = image.GetAlpha();
+ wxCHECK_MSG( subalpha, image, wxT("unable to create alpha channel"));
+ }
+
+ if (M_IMGDATA->m_hasMask)
+ image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue );
+
+ const int width = GetWidth();
+ const int pixsoff = rect.GetLeft() + width * rect.GetTop();
+
+ src_data += 3 * pixsoff;
+ src_alpha += pixsoff; // won't be used if was NULL, so this is ok
+
+ for (long j = 0; j < subheight; ++j)
+ {
+ memcpy( subdata, src_data, 3 * subwidth );
+ subdata += 3 * subwidth;
+ src_data += 3 * width;
+ if (subalpha != NULL) {
+ memcpy( subalpha, src_alpha, subwidth );
+ subalpha += subwidth;
+ src_alpha += width;
+ }
+ }
+
+ return image;
+}
+
+wxImage wxImage::Size( const wxSize& size, const wxPoint& pos,
+ int r_, int g_, int b_ ) const
+{
+ wxImage image;
+
+ wxCHECK_MSG( Ok(), image, wxT("invalid image") );
+ wxCHECK_MSG( (size.GetWidth() > 0) && (size.GetHeight() > 0), image, wxT("invalid size") );
+
+ int width = GetWidth(), height = GetHeight();
+ image.Create(size.GetWidth(), size.GetHeight(), false);
+
+ unsigned char r = (unsigned char)r_;
+ unsigned char g = (unsigned char)g_;
+ unsigned char b = (unsigned char)b_;
+ if ((r_ == -1) && (g_ == -1) && (b_ == -1))
+ {
+ GetOrFindMaskColour( &r, &g, &b );
+ image.SetMaskColour(r, g, b);
+ }
+
+ image.SetRGB(wxRect(), r, g, b);
+
+ wxRect subRect(pos.x, pos.y, width, height);
+ wxRect finalRect(0, 0, size.GetWidth(), size.GetHeight());
+ if (pos.x < 0)
+ finalRect.width -= pos.x;
+ if (pos.y < 0)
+ finalRect.height -= pos.y;
+
+ subRect.Intersect(finalRect);
+
+ if (!subRect.IsEmpty())
+ {
+ if ((subRect.GetWidth() == width) && (subRect.GetHeight() == height))
+ image.Paste(*this, pos.x, pos.y);
+ else
+ image.Paste(GetSubImage(subRect), pos.x, pos.y);
+ }
+
+ return image;
+}
+
+void wxImage::Paste( const wxImage &image, int x, int y )
+{
+ wxCHECK_RET( Ok(), wxT("invalid image") );
+ wxCHECK_RET( image.Ok(), wxT("invalid image") );
+
+ AllocExclusive();
+
+ int xx = 0;
+ int yy = 0;
+ int width = image.GetWidth();
+ int height = image.GetHeight();
+
+ if (x < 0)
+ {
+ xx = -x;
+ width += x;
+ }
+ if (y < 0)
+ {
+ yy = -y;
+ height += y;
+ }
+
+ if ((x+xx)+width > M_IMGDATA->m_width)
+ width = M_IMGDATA->m_width - (x+xx);
+ if ((y+yy)+height > M_IMGDATA->m_height)
+ height = M_IMGDATA->m_height - (y+yy);
+
+ if (width < 1) return;
+ if (height < 1) return;
+
+ if ((!HasMask() && !image.HasMask()) ||
+ (HasMask() && !image.HasMask()) ||
+ ((HasMask() && image.HasMask() &&
+ (GetMaskRed()==image.GetMaskRed()) &&
+ (GetMaskGreen()==image.GetMaskGreen()) &&
+ (GetMaskBlue()==image.GetMaskBlue()))))
+ {
+ 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++)
+ {
+ memcpy( target_data, source_data, width*3 );
+ source_data += source_step;
+ target_data += target_step;
+ }
+ }
+
+ // Copy over the alpha channel from the original image
+ if ( image.HasAlpha() )
+ {
+ if ( !HasAlpha() )
+ InitAlpha();
+
+ unsigned char* source_data = image.GetAlpha() + xx + yy*image.GetWidth();
+ int source_step = image.GetWidth();
+
+ unsigned char* target_data = GetAlpha() + (x+xx) + (y+yy)*M_IMGDATA->m_width;
+ int target_step = M_IMGDATA->m_width;
+
+ for (int j = 0; j < height; j++,
+ source_data += source_step,
+ target_data += target_step)
+ {
+ memcpy( target_data, source_data, width );
+ }
+ }
+
+ if (!HasMask() && image.HasMask())
+ {
+ unsigned char r = image.GetMaskRed();
+ unsigned char g = image.GetMaskGreen();
+ unsigned char b = image.GetMaskBlue();
+
+ 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*3; i+=3)
+ {
+ 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;
+ }
+ }
+}
+
+void wxImage::Replace( unsigned char r1, unsigned char g1, unsigned char b1,
+ unsigned char r2, unsigned char g2, unsigned char b2 )
+{
+ wxCHECK_RET( Ok(), wxT("invalid image") );
+
+ AllocExclusive();
+
+ unsigned char *data = GetData();
+
+ const int w = GetWidth();
+ const int h = GetHeight();
+
+ for (int j = 0; j < h; j++)
+ for (int i = 0; i < w; i++)
+ {
+ if ((data[0] == r1) && (data[1] == g1) && (data[2] == b1))
+ {
+ data[0] = r2;
+ data[1] = g2;
+ data[2] = b2;
+ }
+ data += 3;
+ }
+}
+
+wxImage wxImage::ConvertToGreyscale( double lr, double lg, double lb ) const
+{
+ wxImage image;
+
+ wxCHECK_MSG( Ok(), image, wxT("invalid image") );
+
+ image.Create(M_IMGDATA->m_width, M_IMGDATA->m_height, false);
+
+ unsigned char *dest = image.GetData();
+
+ wxCHECK_MSG( dest, image, wxT("unable to create image") );
+
+ unsigned char *src = M_IMGDATA->m_data;
+ bool hasMask = M_IMGDATA->m_hasMask;
+ unsigned char maskRed = M_IMGDATA->m_maskRed;
+ unsigned char maskGreen = M_IMGDATA->m_maskGreen;
+ unsigned char maskBlue = M_IMGDATA->m_maskBlue;
+
+ if ( hasMask )
+ image.SetMaskColour(maskRed, maskGreen, maskBlue);
+
+ const long size = M_IMGDATA->m_width * M_IMGDATA->m_height;
+ for ( long i = 0; i < size; i++, src += 3, dest += 3 )
+ {
+ // don't modify the mask
+ if ( hasMask && src[0] == maskRed && src[1] == maskGreen && src[2] == maskBlue )
+ {
+ memcpy(dest, src, 3);
+ }
+ else
+ {
+ // calculate the luma
+ double luma = (src[0] * lr + src[1] * lg + src[2] * lb) + 0.5;
+ dest[0] = dest[1] = dest[2] = static_cast<unsigned char>(luma);
+ }
+ }
+
+ // copy the alpha channel, if any
+ if (HasAlpha())
+ {
+ const size_t alphaSize = GetWidth() * GetHeight();
+ unsigned char *alpha = (unsigned char*)malloc(alphaSize);
+ memcpy(alpha, GetAlpha(), alphaSize);
+ image.InitAlpha();
+ image.SetAlpha(alpha);
+ }
+
+ return image;
+}
+
+wxImage wxImage::ConvertToMono( unsigned char r, unsigned char g, unsigned char b ) const
+{
+ wxImage image;
+
+ wxCHECK_MSG( Ok(), image, wxT("invalid image") );
+
+ image.Create( M_IMGDATA->m_width, M_IMGDATA->m_height, false );
+
+ unsigned char *data = image.GetData();
+
+ wxCHECK_MSG( data, image, wxT("unable to create image") );
+
+ if (M_IMGDATA->m_hasMask)
+ {
+ if (M_IMGDATA->m_maskRed == r && M_IMGDATA->m_maskGreen == g &&
+ M_IMGDATA->m_maskBlue == b)
+ image.SetMaskColour( 255, 255, 255 );
+ else
+ image.SetMaskColour( 0, 0, 0 );
+ }
+
+ long size = M_IMGDATA->m_height * M_IMGDATA->m_width;
+
+ unsigned char *srcd = M_IMGDATA->m_data;
+ unsigned char *tard = image.GetData();
+
+ for ( long i = 0; i < size; i++, srcd += 3, tard += 3 )
+ {
+ if (srcd[0] == r && srcd[1] == g && srcd[2] == b)
+ tard[0] = tard[1] = tard[2] = 255;
+ else
+ tard[0] = tard[1] = tard[2] = 0;
+ }
+
+ return image;
+}
+
+int wxImage::GetWidth() const
+{
+ wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
+
+ return M_IMGDATA->m_width;
+}
+
+int wxImage::GetHeight() const
+{
+ wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
+
+ return M_IMGDATA->m_height;
+}
+
+wxBitmapType wxImage::GetType() const
+{
+ wxCHECK_MSG( IsOk(), wxBITMAP_TYPE_INVALID, wxT("invalid image") );
+
+ return M_IMGDATA->m_type;
+}
+
+void wxImage::SetType(wxBitmapType type)
+{
+ wxCHECK_RET( IsOk(), "must create the image before setting its type");
+
+ // type can be wxBITMAP_TYPE_INVALID to reset the image type to default
+ wxASSERT_MSG( type != wxBITMAP_TYPE_MAX, "invalid bitmap type" );
+
+ M_IMGDATA->m_type = type;
+}
+
+long wxImage::XYToIndex(int x, int y) const
+{
+ if ( Ok() &&
+ x >= 0 && y >= 0 &&
+ x < M_IMGDATA->m_width && y < M_IMGDATA->m_height )
+ {
+ return y*M_IMGDATA->m_width + x;
+ }
+
+ return -1;
+}
+
+void wxImage::SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned char b )
+{
+ long pos = XYToIndex(x, y);
+ wxCHECK_RET( pos != -1, wxT("invalid image coordinates") );
+
+ AllocExclusive();
+
+ pos *= 3;
+
+ M_IMGDATA->m_data[ pos ] = r;
+ M_IMGDATA->m_data[ pos+1 ] = g;
+ M_IMGDATA->m_data[ pos+2 ] = b;
+}
+
+void wxImage::SetRGB( const wxRect& rect_, unsigned char r, unsigned char g, unsigned char b )
+{
+ wxCHECK_RET( Ok(), wxT("invalid image") );
+
+ AllocExclusive();
+
+ wxRect rect(rect_);
+ wxRect imageRect(0, 0, GetWidth(), GetHeight());
+ if ( rect == wxRect() )
+ {
+ rect = imageRect;
+ }
+ else
+ {
+ wxCHECK_RET( imageRect.Contains(rect.GetTopLeft()) &&
+ imageRect.Contains(rect.GetBottomRight()),
+ wxT("invalid bounding rectangle") );
+ }
+
+ int x1 = rect.GetLeft(),
+ y1 = rect.GetTop(),
+ x2 = rect.GetRight() + 1,
+ y2 = rect.GetBottom() + 1;
+
+ unsigned char *data wxDUMMY_INITIALIZE(NULL);
+ int x, y, width = GetWidth();
+ for (y = y1; y < y2; y++)
+ {
+ data = M_IMGDATA->m_data + (y*width + x1)*3;
+ for (x = x1; x < x2; x++)
+ {
+ *data++ = r;
+ *data++ = g;
+ *data++ = b;
+ }
+ }
+}
+
+unsigned char wxImage::GetRed( int x, int y ) const
+{
+ long pos = XYToIndex(x, y);
+ wxCHECK_MSG( pos != -1, 0, wxT("invalid image coordinates") );
+
+ pos *= 3;
+
+ return M_IMGDATA->m_data[pos];
+}
+
+unsigned char wxImage::GetGreen( int x, int y ) const
+{
+ long pos = XYToIndex(x, y);
+ wxCHECK_MSG( pos != -1, 0, wxT("invalid image coordinates") );
+
+ pos *= 3;
+
+ return M_IMGDATA->m_data[pos+1];
+}
+
+unsigned char wxImage::GetBlue( int x, int y ) const
+{
+ long pos = XYToIndex(x, y);
+ wxCHECK_MSG( pos != -1, 0, wxT("invalid image coordinates") );
+
+ pos *= 3;
+
+ return M_IMGDATA->m_data[pos+2];
+}
+
+bool wxImage::IsOk() const
+{
+ // image of 0 width or height can't be considered ok - at least because it
+ // causes crashes in ConvertToBitmap() if we don't catch it in time
+ wxImageRefData *data = M_IMGDATA;
+ return data && data->m_ok && data->m_width && data->m_height;
+}
+
+unsigned char *wxImage::GetData() const
+{
+ wxCHECK_MSG( Ok(), (unsigned char *)NULL, wxT("invalid image") );
+
+ return M_IMGDATA->m_data;
+}
+
+void wxImage::SetData( unsigned char *data, bool static_data )
+{
+ wxCHECK_RET( Ok(), wxT("invalid image") );
+
+ 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;
+ newRefData->m_static = static_data;
+
+ UnRef();
+
+ m_refData = newRefData;
+}
+
+void wxImage::SetData( unsigned char *data, int new_width, int new_height, bool static_data )
+{
+ wxImageRefData *newRefData = new wxImageRefData();
+
+ if (m_refData)
+ {
+ newRefData->m_width = new_width;
+ newRefData->m_height = new_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;
+ }
+ else
+ {
+ newRefData->m_width = new_width;
+ newRefData->m_height = new_height;
+ newRefData->m_data = data;
+ newRefData->m_ok = true;
+ }
+ newRefData->m_static = static_data;
+
+ UnRef();
+
+ m_refData = newRefData;
+}
+
+// ----------------------------------------------------------------------------
+// alpha channel support
+// ----------------------------------------------------------------------------
+
+void wxImage::SetAlpha(int x, int y, unsigned char alpha)
+{
+ wxCHECK_RET( HasAlpha(), wxT("no alpha channel") );
+
+ long pos = XYToIndex(x, y);
+ wxCHECK_RET( pos != -1, wxT("invalid image coordinates") );
+
+ AllocExclusive();
+
+ M_IMGDATA->m_alpha[pos] = alpha;
+}
+
+unsigned char wxImage::GetAlpha(int x, int y) const
+{
+ wxCHECK_MSG( HasAlpha(), 0, wxT("no alpha channel") );
+
+ long pos = XYToIndex(x, y);
+ wxCHECK_MSG( pos != -1, 0, wxT("invalid image coordinates") );
+
+ return M_IMGDATA->m_alpha[pos];
+}
+
+bool
+wxImage::ConvertColourToAlpha(unsigned char r, unsigned char g, unsigned char b)
+{
+ SetAlpha(NULL);
+
+ const int w = M_IMGDATA->m_width;
+ const int h = M_IMGDATA->m_height;
+
+ unsigned char *alpha = GetAlpha();
+ unsigned char *data = GetData();
+
+ for ( int y = 0; y < h; y++ )
+ {
+ for ( int x = 0; x < w; x++ )
+ {
+ *alpha++ = *data;
+ *data++ = r;
+ *data++ = g;
+ *data++ = b;
+ }
+ }
+
+ return true;
+}
+
+void wxImage::SetAlpha( unsigned char *alpha, bool static_data )
+{
+ wxCHECK_RET( Ok(), wxT("invalid image") );
+
+ AllocExclusive();
+
+ if ( !alpha )
+ {
+ alpha = (unsigned char *)malloc(M_IMGDATA->m_width*M_IMGDATA->m_height);
+ }
+
+ if( !M_IMGDATA->m_staticAlpha )
+ free(M_IMGDATA->m_alpha);
+
+ M_IMGDATA->m_alpha = alpha;
+ M_IMGDATA->m_staticAlpha = static_data;
+}
+
+unsigned char *wxImage::GetAlpha() const
+{
+ wxCHECK_MSG( Ok(), (unsigned char *)NULL, wxT("invalid image") );
+
+ return M_IMGDATA->m_alpha;
+}
+
+void wxImage::InitAlpha()
+{
+ wxCHECK_RET( !HasAlpha(), wxT("image already has an alpha channel") );
+
+ // initialize memory for alpha channel
+ SetAlpha();
+
+ unsigned char *alpha = M_IMGDATA->m_alpha;
+ const size_t lenAlpha = M_IMGDATA->m_width * M_IMGDATA->m_height;
+
+ if ( HasMask() )
+ {
+ // use the mask to initialize the alpha channel.
+ const unsigned char * const alphaEnd = alpha + lenAlpha;
+
+ const unsigned char mr = M_IMGDATA->m_maskRed;
+ const unsigned char mg = M_IMGDATA->m_maskGreen;
+ const unsigned char mb = M_IMGDATA->m_maskBlue;
+ for ( unsigned char *src = M_IMGDATA->m_data;
+ alpha < alphaEnd;
+ src += 3, alpha++ )
+ {
+ *alpha = (src[0] == mr && src[1] == mg && src[2] == mb)
+ ? wxIMAGE_ALPHA_TRANSPARENT
+ : wxIMAGE_ALPHA_OPAQUE;
+ }
+
+ M_IMGDATA->m_hasMask = false;
+ }
+ else // no mask
+ {
+ // make the image fully opaque
+ memset(alpha, wxIMAGE_ALPHA_OPAQUE, lenAlpha);
+ }
+}
+
+// ----------------------------------------------------------------------------
+// mask support
+// ----------------------------------------------------------------------------
+
+void wxImage::SetMaskColour( unsigned char r, unsigned char g, unsigned char b )
+{
+ wxCHECK_RET( Ok(), wxT("invalid image") );
+
+ AllocExclusive();
+
+ M_IMGDATA->m_maskRed = r;
+ M_IMGDATA->m_maskGreen = g;
+ M_IMGDATA->m_maskBlue = b;
+ M_IMGDATA->m_hasMask = true;
+}
+
+bool wxImage::GetOrFindMaskColour( unsigned char *r, unsigned char *g, unsigned char *b ) const
+{
+ wxCHECK_MSG( Ok(), false, wxT("invalid image") );
+
+ if (M_IMGDATA->m_hasMask)
+ {
+ if (r) *r = M_IMGDATA->m_maskRed;
+ if (g) *g = M_IMGDATA->m_maskGreen;
+ if (b) *b = M_IMGDATA->m_maskBlue;
+ return true;
+ }
+ else
+ {
+ FindFirstUnusedColour(r, g, b);
+ return false;
+ }
+}
+
+unsigned char wxImage::GetMaskRed() const
+{
+ wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
+
+ return M_IMGDATA->m_maskRed;
+}
+
+unsigned char wxImage::GetMaskGreen() const
+{
+ wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
+
+ return M_IMGDATA->m_maskGreen;
+}
+
+unsigned char wxImage::GetMaskBlue() const
+{
+ wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
+
+ return M_IMGDATA->m_maskBlue;
+}
+
+void wxImage::SetMask( bool mask )
+{
+ wxCHECK_RET( Ok(), wxT("invalid image") );
+
+ AllocExclusive();
+
+ M_IMGDATA->m_hasMask = mask;
+}
+
+bool wxImage::HasMask() const
+{
+ wxCHECK_MSG( Ok(), false, wxT("invalid image") );
+
+ return M_IMGDATA->m_hasMask;
+}
+
+bool wxImage::IsTransparent(int x, int y, unsigned char threshold) const
+{
+ long pos = XYToIndex(x, y);
+ wxCHECK_MSG( pos != -1, false, wxT("invalid image coordinates") );
+
+ // check mask
+ if ( M_IMGDATA->m_hasMask )
+ {
+ const unsigned char *p = M_IMGDATA->m_data + 3*pos;
+ if ( p[0] == M_IMGDATA->m_maskRed &&
+ p[1] == M_IMGDATA->m_maskGreen &&
+ p[2] == M_IMGDATA->m_maskBlue )
+ {
+ return true;
+ }
+ }
+
+ // then check alpha
+ if ( M_IMGDATA->m_alpha )
+ {
+ if ( M_IMGDATA->m_alpha[pos] < threshold )
+ {
+ // transparent enough
+ return true;
+ }
+ }
+
+ // not transparent
+ return false;
+}
+
+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 colour in image being masked.") );
+ return false ;
+ }
+
+ AllocExclusive();
+
+ unsigned char *imgdata = GetData();
+ unsigned char *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;
+}
+
+bool wxImage::ConvertAlphaToMask(unsigned char threshold)
+{
+ if (!HasAlpha())
+ return true;
+
+ unsigned char mr, mg, mb;
+ if (!FindFirstUnusedColour(&mr, &mg, &mb))
+ {
+ wxLogError( _("No unused colour in image being masked.") );
+ return false;
+ }
+
+ AllocExclusive();
+
+ SetMask(true);
+ SetMaskColour(mr, mg, mb);
+
+ unsigned char *imgdata = GetData();
+ unsigned char *alphadata = GetAlpha();
+
+ int w = GetWidth();
+ int h = GetHeight();
+
+ for (int y = 0; y < h; y++)
+ {
+ for (int x = 0; x < w; x++, imgdata += 3, alphadata++)
+ {
+ if (*alphadata < threshold)
+ {
+ imgdata[0] = mr;
+ imgdata[1] = mg;
+ imgdata[2] = mb;
+ }
+ }
+ }
+
+ if( !M_IMGDATA->m_staticAlpha )
+ free(M_IMGDATA->m_alpha);
+
+ M_IMGDATA->m_alpha = NULL;
+ M_IMGDATA->m_staticAlpha = false;
+
+ return true;
+}
+
+// ----------------------------------------------------------------------------
+// Palette functions
+// ----------------------------------------------------------------------------
+
+#if wxUSE_PALETTE
+
+bool wxImage::HasPalette() const
+{
+ if (!Ok())
+ return false;
+
+ return M_IMGDATA->m_palette.Ok();
+}
+
+const wxPalette& wxImage::GetPalette() const
+{
+ wxCHECK_MSG( Ok(), wxNullPalette, wxT("invalid image") );
+
+ return M_IMGDATA->m_palette;
+}
+
+void wxImage::SetPalette(const wxPalette& palette)
+{
+ wxCHECK_RET( Ok(), wxT("invalid image") );
+
+ AllocExclusive();
+
+ M_IMGDATA->m_palette = palette;
+}
+
+#endif // wxUSE_PALETTE
+
+// ----------------------------------------------------------------------------
+// Option functions (arbitrary name/value mapping)
+// ----------------------------------------------------------------------------
+
+void wxImage::SetOption(const wxString& name, const wxString& value)
+{
+ AllocExclusive();
+
+ int idx = M_IMGDATA->m_optionNames.Index(name, false);
+ if ( idx == wxNOT_FOUND )
+ {
+ M_IMGDATA->m_optionNames.Add(name);
+ M_IMGDATA->m_optionValues.Add(value);
+ }
+ else
+ {
+ M_IMGDATA->m_optionNames[idx] = name;
+ M_IMGDATA->m_optionValues[idx] = value;
+ }
+}
+
+void wxImage::SetOption(const wxString& name, int value)
+{
+ wxString valStr;
+ valStr.Printf(wxT("%d"), value);
+ SetOption(name, valStr);
+}
+
+wxString wxImage::GetOption(const wxString& name) const
+{
+ if ( !M_IMGDATA )
+ return wxEmptyString;
+
+ int idx = M_IMGDATA->m_optionNames.Index(name, false);
+ if ( idx == wxNOT_FOUND )
+ return wxEmptyString;
+ else
+ return M_IMGDATA->m_optionValues[idx];
+}
+
+int wxImage::GetOptionInt(const wxString& name) const
+{
+ return wxAtoi(GetOption(name));
+}
+
+bool wxImage::HasOption(const wxString& name) const
+{
+ return M_IMGDATA ? M_IMGDATA->m_optionNames.Index(name, false) != wxNOT_FOUND
+ : false;
+}
+
+// ----------------------------------------------------------------------------
+// image I/O
+// ----------------------------------------------------------------------------
+
+bool wxImage::LoadFile( const wxString& WXUNUSED_UNLESS_STREAMS(filename),
+ wxBitmapType WXUNUSED_UNLESS_STREAMS(type),
+ int WXUNUSED_UNLESS_STREAMS(index) )
+{
+#if HAS_FILE_STREAMS
+ if (wxFileExists(filename))
+ {
+ wxImageFileInputStream stream(filename);
+ wxBufferedInputStream bstream( stream );
+ return LoadFile(bstream, type, index);
+ }
+ else
+ {
+ wxLogError( _("Can't load image from file '%s': file does not exist."), filename.c_str() );
+
+ return false;
+ }
+#else // !HAS_FILE_STREAMS
+ return false;
+#endif // HAS_FILE_STREAMS
+}
+
+bool wxImage::LoadFile( const wxString& WXUNUSED_UNLESS_STREAMS(filename),
+ const wxString& WXUNUSED_UNLESS_STREAMS(mimetype),
+ int WXUNUSED_UNLESS_STREAMS(index) )
+{
+#if HAS_FILE_STREAMS
+ if (wxFileExists(filename))
+ {
+ wxImageFileInputStream stream(filename);
+ wxBufferedInputStream bstream( stream );
+ return LoadFile(bstream, mimetype, index);
+ }
+ else
+ {
+ wxLogError( _("Can't load image from file '%s': file does not exist."), filename.c_str() );
+
+ return false;
+ }
+#else // !HAS_FILE_STREAMS
+ return false;
+#endif // HAS_FILE_STREAMS
+}
+
+
+bool wxImage::SaveFile( const wxString& filename ) const
+{
+ wxString ext = filename.AfterLast('.').Lower();
+
+ wxImageHandler *handler = FindHandler(ext, wxBITMAP_TYPE_ANY);
+ if ( !handler)
+ {
+ wxLogError(_("Can't save image to file '%s': unknown extension."),
+ filename);
+ return false;
+ }
+
+ return SaveFile(filename, handler->GetType());
+}
+
+bool wxImage::SaveFile( const wxString& WXUNUSED_UNLESS_STREAMS(filename),
+ wxBitmapType WXUNUSED_UNLESS_STREAMS(type) ) const
+{
+#if HAS_FILE_STREAMS
+ wxCHECK_MSG( Ok(), false, wxT("invalid image") );
+
+ ((wxImage*)this)->SetOption(wxIMAGE_OPTION_FILENAME, filename);
+
+ wxImageFileOutputStream stream(filename);
+
+ if ( stream.IsOk() )
+ {
+ wxBufferedOutputStream bstream( stream );
+ return SaveFile(bstream, type);
+ }
+#endif // HAS_FILE_STREAMS
+
+ return false;
+}
+
+bool wxImage::SaveFile( const wxString& WXUNUSED_UNLESS_STREAMS(filename),
+ const wxString& WXUNUSED_UNLESS_STREAMS(mimetype) ) const
+{
+#if HAS_FILE_STREAMS
+ wxCHECK_MSG( Ok(), false, wxT("invalid image") );
+
+ ((wxImage*)this)->SetOption(wxIMAGE_OPTION_FILENAME, filename);
+
+ wxImageFileOutputStream stream(filename);
+
+ if ( stream.IsOk() )
+ {
+ wxBufferedOutputStream bstream( stream );
+ return SaveFile(bstream, mimetype);
+ }
+#endif // HAS_FILE_STREAMS
+
+ return false;
+}
+
+bool wxImage::CanRead( const wxString& WXUNUSED_UNLESS_STREAMS(name) )
+{
+#if HAS_FILE_STREAMS
+ wxImageFileInputStream stream(name);
+ return CanRead(stream);
+#else
+ return false;
+#endif
+}
+
+int wxImage::GetImageCount( const wxString& WXUNUSED_UNLESS_STREAMS(name),
+ wxBitmapType WXUNUSED_UNLESS_STREAMS(type) )
+{
+#if HAS_FILE_STREAMS
+ wxImageFileInputStream stream(name);
+ if (stream.Ok())
+ return GetImageCount(stream, type);
+#endif
+
+ return 0;
+}
+
+#if wxUSE_STREAMS
+
+bool wxImage::CanRead( wxInputStream &stream )
+{
+ const wxList& list = GetHandlers();
+
+ for ( wxList::compatibility_iterator node = list.GetFirst(); node; node = node->GetNext() )
+ {
+ wxImageHandler *handler=(wxImageHandler*)node->GetData();
+ if (handler->CanRead( stream ))
+ return true;
+ }
+
+ return false;
+}
+
+int wxImage::GetImageCount( wxInputStream &stream, wxBitmapType type )
+{
+ wxImageHandler *handler;
+
+ if ( type == wxBITMAP_TYPE_ANY )
+ {
+ const wxList& list = GetHandlers();
+
+ for ( wxList::compatibility_iterator node = list.GetFirst();
+ node;
+ node = node->GetNext() )
+ {
+ handler = (wxImageHandler*)node->GetData();
+ if ( handler->CanRead(stream) )
+ {
+ const int count = handler->GetImageCount(stream);
+ if ( count >= 0 )
+ return count;
+ }
+
+ }
+
+ wxLogWarning(_("No handler found for image type."));
+ return 0;
+ }
+
+ handler = FindHandler(type);
+
+ if ( !handler )
+ {
+ wxLogWarning(_("No image handler for type %ld defined."), type);
+ return false;
+ }
+
+ if ( handler->CanRead(stream) )
+ {
+ return handler->GetImageCount(stream);
+ }
+ else
+ {
+ wxLogError(_("Image file is not of type %ld."), type);
+ return 0;
+ }
+}
+
+bool wxImage::DoLoad(wxImageHandler& handler, wxInputStream& stream, int index)
+{
+ // save the options values which can be clobbered by the handler (e.g. many
+ // of them call Destroy() before trying to load the file)
+ const unsigned maxWidth = GetOptionInt(wxIMAGE_OPTION_MAX_WIDTH),
+ maxHeight = GetOptionInt(wxIMAGE_OPTION_MAX_HEIGHT);
+
+ if ( !handler.LoadFile(this, stream, true/*verbose*/, index) )
+ return false;
+
+ M_IMGDATA->m_type = handler.GetType();
+
+ // rescale the image to the specified size if needed
+ if ( maxWidth || maxHeight )
+ {
+ const unsigned widthOrig = GetWidth(),
+ heightOrig = GetHeight();
+
+ // this uses the same (trivial) algorithm as the JPEG handler
+ unsigned width = widthOrig,
+ height = heightOrig;
+ while ( (maxWidth && width > maxWidth) ||
+ (maxHeight && height > maxHeight) )
+ {
+ width /= 2;
+ height /= 2;
+ }
+
+ if ( width != widthOrig || height != heightOrig )
+ Rescale(width, height, wxIMAGE_QUALITY_HIGH);
+ }
+
+ return true;
+}
+
+bool wxImage::LoadFile( wxInputStream& stream, wxBitmapType type, int index )
+{
+ AllocExclusive();
+
+ wxImageHandler *handler;
+
+ if ( type == wxBITMAP_TYPE_ANY )
+ {
+ const wxList& list = GetHandlers();
+ for ( wxList::compatibility_iterator node = list.GetFirst();
+ node;
+ node = node->GetNext() )
+ {
+ handler = (wxImageHandler*)node->GetData();
+ if ( handler->CanRead(stream) && DoLoad(*handler, stream, index) )
+ return true;
+ }
+
+ wxLogWarning( _("No handler found for image type.") );
+
+ return false;
+ }
+ //else: have specific type
+
+ handler = FindHandler(type);
+ if ( !handler )
+ {
+ wxLogWarning( _("No image handler for type %ld defined."), type );
+ return false;
+ }
+
+ if ( stream.IsSeekable() && !handler->CanRead(stream) )
+ {
+ wxLogError(_("Image file is not of type %ld."), type);
+ return false;
+ }
+
+ return DoLoad(*handler, stream, index);
+}
+
+bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype, int index )
+{
+ UnRef();
+
+ m_refData = new wxImageRefData;
+
+ wxImageHandler *handler = FindHandlerMime(mimetype);
+
+ if ( !handler )
+ {
+ wxLogWarning( _("No image handler for type %s defined."), mimetype.GetData() );
+ return false;
+ }
+
+ if ( stream.IsSeekable() && !handler->CanRead(stream) )
+ {
+ wxLogError(_("Image file is not of type %s."), mimetype);
+ return false;
+ }
+
+ return DoLoad(*handler, stream, index);
+}
+
+bool wxImage::DoSave(wxImageHandler& handler, wxOutputStream& stream) const
+{
+ wxImage * const self = const_cast<wxImage *>(this);
+ if ( !handler.SaveFile(self, stream) )
+ return false;
+
+ M_IMGDATA->m_type = handler.GetType();
+ return true;
+}
+
+bool wxImage::SaveFile( wxOutputStream& stream, wxBitmapType type ) const
+{
+ wxCHECK_MSG( Ok(), false, wxT("invalid image") );
+
+ wxImageHandler *handler = FindHandler(type);
+ if ( !handler )
+ {
+ wxLogWarning( _("No image handler for type %d defined."), type );
+ return false;
+ }
+
+ return DoSave(*handler, stream);
+}
+
+bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype ) const
+{
+ wxCHECK_MSG( Ok(), false, wxT("invalid image") );
+
+ wxImageHandler *handler = FindHandlerMime(mimetype);
+ if ( !handler )
+ {
+ wxLogWarning( _("No image handler for type %s defined."), mimetype.GetData() );
+ }
+
+ return DoSave(*handler, stream);
+}
+
+#endif // wxUSE_STREAMS
+
+// ----------------------------------------------------------------------------
+// image I/O handlers
+// ----------------------------------------------------------------------------
+
+void wxImage::AddHandler( wxImageHandler *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 )
+{
+ // 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 *handler = FindHandler(name);
+ if (handler)
+ {
+ sm_handlers.DeleteObject(handler);
+ delete handler;
+ return true;
+ }
+ else
+ return false;
+}
+
+wxImageHandler *wxImage::FindHandler( const wxString& name )
+{
+ wxList::compatibility_iterator node = sm_handlers.GetFirst();
+ while (node)
+ {
+ wxImageHandler *handler = (wxImageHandler*)node->GetData();
+ if (handler->GetName().Cmp(name) == 0) return handler;
+
+ node = node->GetNext();
+ }
+ return NULL;
+}
+
+wxImageHandler *wxImage::FindHandler( const wxString& extension, wxBitmapType bitmapType )
+{
+ wxList::compatibility_iterator node = sm_handlers.GetFirst();
+ while (node)
+ {
+ wxImageHandler *handler = (wxImageHandler*)node->GetData();
+ if ( (handler->GetExtension().Cmp(extension) == 0) &&
+ ( (bitmapType == wxBITMAP_TYPE_ANY) || (handler->GetType() == bitmapType)) )
+ {
+ return handler;
+ }
+ node = node->GetNext();
+ }
+ return NULL;
+}
+
+wxImageHandler *wxImage::FindHandler(wxBitmapType bitmapType )
+{
+ wxList::compatibility_iterator node = sm_handlers.GetFirst();
+ while (node)
+ {
+ wxImageHandler *handler = (wxImageHandler *)node->GetData();
+ if (handler->GetType() == bitmapType) return handler;
+ node = node->GetNext();
+ }
+ return NULL;
+}
+
+wxImageHandler *wxImage::FindHandlerMime( const wxString& mimetype )
+{
+ wxList::compatibility_iterator node = sm_handlers.GetFirst();
+ while (node)
+ {
+ wxImageHandler *handler = (wxImageHandler *)node->GetData();
+ if (handler->GetMimeType().IsSameAs(mimetype, false)) return handler;
+ node = node->GetNext();
+ }
+ return NULL;
+}
+
+void wxImage::InitStandardHandlers()
+{
+#if wxUSE_STREAMS
+ AddHandler(new wxBMPHandler);
+#endif // wxUSE_STREAMS
+}
+
+void wxImage::CleanUpHandlers()
+{
+ wxList::compatibility_iterator node = sm_handlers.GetFirst();
+ while (node)
+ {
+ wxImageHandler *handler = (wxImageHandler *)node->GetData();
+ wxList::compatibility_iterator next = node->GetNext();
+ delete handler;
+ node = next;
+ }
+
+ sm_handlers.Clear();
+}
+
+wxString wxImage::GetImageExtWildcard()
+{
+ wxString fmts;
+
+ wxList& Handlers = wxImage::GetHandlers();
+ wxList::compatibility_iterator Node = Handlers.GetFirst();
+ while ( Node )
+ {
+ wxImageHandler* Handler = (wxImageHandler*)Node->GetData();
+ fmts += wxT("*.") + Handler->GetExtension();
+ Node = Node->GetNext();
+ if ( Node ) fmts += wxT(";");
+ }
+
+ return wxT("(") + fmts + wxT(")|") + fmts;
+}
+
+wxImage::HSVValue wxImage::RGBtoHSV(const RGBValue& rgb)
+{
+ const double red = rgb.red / 255.0,
+ green = rgb.green / 255.0,
+ blue = rgb.blue / 255.0;
+
+ // find the min and max intensity (and remember which one was it for the
+ // latter)
+ double minimumRGB = red;
+ if ( green < minimumRGB )
+ minimumRGB = green;
+ if ( blue < minimumRGB )
+ minimumRGB = blue;
+
+ enum { RED, GREEN, BLUE } chMax = RED;
+ double maximumRGB = red;
+ if ( green > maximumRGB )
+ {
+ chMax = GREEN;
+ maximumRGB = green;
+ }
+ if ( blue > maximumRGB )
+ {
+ chMax = BLUE;
+ maximumRGB = blue;
+ }
+
+ const double value = maximumRGB;
+
+ double hue = 0.0, saturation;
+ const double deltaRGB = maximumRGB - minimumRGB;
+ if ( wxIsNullDouble(deltaRGB) )
+ {
+ // Gray has no color
+ hue = 0.0;
+ saturation = 0.0;
+ }
+ else
+ {
+ switch ( chMax )
+ {
+ case RED:
+ hue = (green - blue) / deltaRGB;
+ break;
+
+ case GREEN:
+ hue = 2.0 + (blue - red) / deltaRGB;
+ break;
+
+ case BLUE:
+ hue = 4.0 + (red - green) / deltaRGB;
+ break;
+
+ default:
+ wxFAIL_MSG(wxT("hue not specified"));
+ break;
+ }
+
+ hue /= 6.0;
+
+ if ( hue < 0.0 )
+ hue += 1.0;
+
+ saturation = deltaRGB / maximumRGB;
+ }
+
+ return HSVValue(hue, saturation, value);
+}
+
+wxImage::RGBValue wxImage::HSVtoRGB(const HSVValue& hsv)
+{
+ double red, green, blue;
+
+ if ( wxIsNullDouble(hsv.saturation) )
+ {
+ // Grey
+ red = hsv.value;
+ green = hsv.value;
+ blue = hsv.value;
+ }
+ else // not grey
+ {
+ double hue = hsv.hue * 6.0; // sector 0 to 5
+ int i = (int)floor(hue);
+ double f = hue - i; // fractional part of h
+ double p = hsv.value * (1.0 - hsv.saturation);
+
+ switch (i)
+ {
+ case 0:
+ red = hsv.value;
+ green = hsv.value * (1.0 - hsv.saturation * (1.0 - f));
+ blue = p;
+ break;
+
+ case 1:
+ red = hsv.value * (1.0 - hsv.saturation * f);
+ green = hsv.value;
+ blue = p;
+ break;
+
+ case 2:
+ red = p;
+ green = hsv.value;
+ blue = hsv.value * (1.0 - hsv.saturation * (1.0 - f));
+ break;
+
+ case 3:
+ red = p;
+ green = hsv.value * (1.0 - hsv.saturation * f);
+ blue = hsv.value;
+ break;
+
+ case 4:
+ red = hsv.value * (1.0 - hsv.saturation * (1.0 - f));
+ green = p;
+ blue = hsv.value;
+ break;
+
+ default: // case 5:
+ red = hsv.value;
+ green = p;
+ blue = hsv.value * (1.0 - hsv.saturation * f);
+ break;
+ }
+ }
+
+ return RGBValue((unsigned char)(red * 255.0),
+ (unsigned char)(green * 255.0),
+ (unsigned char)(blue * 255.0));
+}
+
+/*
+ * Rotates the hue of each pixel of the image. angle is a double in the range
+ * -1.0..1.0 where -1.0 is -360 degrees and 1.0 is 360 degrees
+ */
+void wxImage::RotateHue(double angle)
+{
+ AllocExclusive();
+
+ unsigned char *srcBytePtr;
+ unsigned char *dstBytePtr;
+ unsigned long count;
+ wxImage::HSVValue hsv;
+ wxImage::RGBValue rgb;
+
+ wxASSERT (angle >= -1.0 && angle <= 1.0);
+ count = M_IMGDATA->m_width * M_IMGDATA->m_height;
+ if ( count > 0 && !wxIsNullDouble(angle) )
+ {
+ srcBytePtr = M_IMGDATA->m_data;
+ dstBytePtr = srcBytePtr;
+ do
+ {
+ rgb.red = *srcBytePtr++;
+ rgb.green = *srcBytePtr++;
+ rgb.blue = *srcBytePtr++;
+ hsv = RGBtoHSV(rgb);
+
+ hsv.hue = hsv.hue + angle;
+ if (hsv.hue > 1.0)
+ hsv.hue = hsv.hue - 1.0;
+ else if (hsv.hue < 0.0)
+ hsv.hue = hsv.hue + 1.0;
+
+ rgb = HSVtoRGB(hsv);
+ *dstBytePtr++ = rgb.red;
+ *dstBytePtr++ = rgb.green;
+ *dstBytePtr++ = rgb.blue;
+ } while (--count != 0);
+ }
+}
projects / wxWidgets.git / blobdiff