X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c77a67962c2f50a872491869fcf1a6c082fdc6c6..c4709ea55c2299c61ecda2ac350370f656de16ca:/src/common/image.cpp diff --git a/src/common/image.cpp b/src/common/image.cpp index d7e07b0dc0..125e97613a 100644 --- a/src/common/image.cpp +++ b/src/common/image.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: image.cpp +// Name: src/common/image.cpp // Purpose: wxImage // Author: Robert Roebling // RCS-ID: $Id$ @@ -148,17 +148,6 @@ wxImage::wxImage( wxInputStream& stream, const wxString& mimetype, int index ) } #endif // wxUSE_STREAMS -wxImage::wxImage( const wxImage& image ) - : wxObject() -{ - Ref(image); -} - -wxImage::wxImage( const wxImage* image ) -{ - if (image) Ref(*image); -} - wxImage::wxImage( const char** xpmData ) { Create(xpmData); @@ -261,9 +250,18 @@ wxImage wxImage::Copy() const image.SetMask( M_IMGDATA->m_hasMask ); memcpy( data, GetData(), M_IMGDATA->m_width*M_IMGDATA->m_height*3 ); - - // also copy the image options + wxImageRefData *imgData = (wxImageRefData *)image.m_refData; + + // also copy the alpha channel + if (HasAlpha()) + { + image.SetAlpha(); + unsigned char* alpha = image.GetAlpha(); + memcpy( alpha, GetAlpha(), M_IMGDATA->m_width*M_IMGDATA->m_height ); + } + + // also copy the image options imgData->m_optionNames = M_IMGDATA->m_optionNames; imgData->m_optionValues = M_IMGDATA->m_optionValues; @@ -380,7 +378,7 @@ wxImage wxImage::ShrinkBy( int xFactor , int yFactor ) const } } - // In case this is a cursor, make sure the hotspot is scalled accordingly: + // In case this is a cursor, make sure the hotspot is scaled accordingly: if ( HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X) ) image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, (GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X))/xFactor); @@ -466,7 +464,7 @@ wxImage wxImage::Scale( int width, int height ) const y += y_delta; } - // In case this is a cursor, make sure the hotspot is scalled accordingly: + // In case this is a cursor, make sure the hotspot is scaled accordingly: if ( HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X) ) image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, (GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X)*width)/old_width); @@ -769,6 +767,46 @@ void wxImage::Replace( unsigned char r1, unsigned char g1, unsigned char b1, } } +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] = wx_static_cast(unsigned char, luma); + } + } + + return image; +} + wxImage wxImage::ConvertToMono( unsigned char r, unsigned char g, unsigned char b ) const { wxImage image; @@ -1554,7 +1592,13 @@ bool wxImage::LoadFile( wxInputStream& stream, long type, int index ) return false; } - return handler->LoadFile(this, stream, true/*verbose*/, index); + if (stream.IsSeekable() && !handler->CanRead(stream)) + { + wxLogError(_("Image file is not of type %d."), type); + return false; + } + else + return handler->LoadFile(this, stream, true/*verbose*/, index); } bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype, int index ) @@ -1572,7 +1616,13 @@ bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype, int ind return false; } - return handler->LoadFile( this, stream, true/*verbose*/, index ); + if (stream.IsSeekable() && !handler->CanRead(stream)) + { + wxLogError(_("Image file is not of type %s."), (const wxChar*) mimetype); + return false; + } + else + return handler->LoadFile( this, stream, true/*verbose*/, index ); } bool wxImage::SaveFile( wxOutputStream& stream, int type ) const @@ -1778,7 +1828,7 @@ wxImage::HSVValue wxImage::RGBtoHSV(const RGBValue& rgb) const double value = maximumRGB; - double hue, saturation; + double hue = 0.0, saturation; const double deltaRGB = maximumRGB - minimumRGB; if ( wxIsNullDouble(deltaRGB) ) { @@ -1801,6 +1851,10 @@ wxImage::HSVValue wxImage::RGBtoHSV(const RGBValue& rgb) case BLUE: hue = 4.0 + (red - green) / deltaRGB; break; + + default: + wxFAIL_MSG(wxT("hue not specified")); + break; } hue /= 6.0; @@ -2175,20 +2229,20 @@ wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool i wxRealPoint p3 = rotated_point (GetWidth(), 0, cos_angle, sin_angle, p0); wxRealPoint p4 = rotated_point (GetWidth(), GetHeight(), cos_angle, sin_angle, p0); - int x1 = (int) floor (wxMin (wxMin(p1.x, p2.x), wxMin(p3.x, p4.x))); - int y1 = (int) floor (wxMin (wxMin(p1.y, p2.y), wxMin(p3.y, p4.y))); - int x2 = (int) ceil (wxMax (wxMax(p1.x, p2.x), wxMax(p3.x, p4.x))); - int y2 = (int) ceil (wxMax (wxMax(p1.y, p2.y), wxMax(p3.y, p4.y))); + int x1a = (int) floor (wxMin (wxMin(p1.x, p2.x), wxMin(p3.x, p4.x))); + int y1a = (int) floor (wxMin (wxMin(p1.y, p2.y), wxMin(p3.y, p4.y))); + int x2a = (int) ceil (wxMax (wxMax(p1.x, p2.x), wxMax(p3.x, p4.x))); + int y2a = (int) ceil (wxMax (wxMax(p1.y, p2.y), wxMax(p3.y, p4.y))); // Create rotated image - wxImage rotated (x2 - x1 + 1, y2 - y1 + 1, false); + wxImage rotated (x2a - x1a + 1, y2a - y1a + 1, false); // With alpha channel if (has_alpha) rotated.SetAlpha(); if (offset_after_rotation != NULL) { - *offset_after_rotation = wxPoint (x1, y1); + *offset_after_rotation = wxPoint (x1a, y1a); } // GRG: The rotated (destination) image is always accessed @@ -2230,7 +2284,7 @@ wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool i { for (x = 0; x < rotated.GetWidth(); x++) { - wxRealPoint src = rotated_point (x + x1, y + y1, cos_angle, -sin_angle, p0); + wxRealPoint src = rotated_point (x + x1a, y + y1a, cos_angle, -sin_angle, p0); if (-0.25 < src.x && src.x < GetWidth() - 0.75 && -0.25 < src.y && src.y < GetHeight() - 0.75) @@ -2238,8 +2292,6 @@ wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool i // interpolate using the 4 enclosing grid-points. Those // points can be obtained using floor and ceiling of the // exact coordinates of the point - // C.M. 2000-02-17: when the point is near the border, special care is required. - int x1, y1, x2, y2; if (0 < src.x && src.x < GetWidth() - 1) @@ -2289,10 +2341,7 @@ wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool i *(dst++) = *p; if (has_alpha) - { - unsigned char *p = alpha[y1] + x1; - *(alpha_dst++) = *p; - } + *(alpha_dst++) = *(alpha[y1] + x1); } else if (d2 < gs_Epsilon) { @@ -2302,10 +2351,7 @@ wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool i *(dst++) = *p; if (has_alpha) - { - unsigned char *p = alpha[y1] + x2; - *(alpha_dst++) = *p; - } + *(alpha_dst++) = *(alpha[y1] + x2); } else if (d3 < gs_Epsilon) { @@ -2315,10 +2361,7 @@ wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool i *(dst++) = *p; if (has_alpha) - { - unsigned char *p = alpha[y2] + x2; - *(alpha_dst++) = *p; - } + *(alpha_dst++) = *(alpha[y2] + x2); } else if (d4 < gs_Epsilon) { @@ -2328,10 +2371,7 @@ wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool i *(dst++) = *p; if (has_alpha) - { - unsigned char *p = alpha[y2] + x1; - *(alpha_dst++) = *p; - } + *(alpha_dst++) = *(alpha[y2] + x1); } else { @@ -2360,10 +2400,10 @@ wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool i if (has_alpha) { - unsigned char *v1 = alpha[y1] + (x1); - unsigned char *v2 = alpha[y1] + (x2); - unsigned char *v3 = alpha[y2] + (x2); - unsigned char *v4 = alpha[y2] + (x1); + v1 = alpha[y1] + (x1); + v2 = alpha[y1] + (x2); + v3 = alpha[y2] + (x2); + v4 = alpha[y2] + (x1); *(alpha_dst++) = (unsigned char) ( (w1 * *v1 + w2 * *v2 + @@ -2390,7 +2430,7 @@ wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool i { for (x = 0; x < rotated.GetWidth(); x++) { - wxRealPoint src = rotated_point (x + x1, y + y1, cos_angle, -sin_angle, p0); + wxRealPoint src = rotated_point (x + x1a, y + y1a, cos_angle, -sin_angle, p0); const int xs = wxCint (src.x); // wxCint rounds to the const int ys = wxCint (src.y); // closest integer @@ -2404,10 +2444,7 @@ wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool i *(dst++) = *p; if (has_alpha) - { - unsigned char *p = alpha[ys] + (xs); - *(alpha_dst++) = *p; - } + *(alpha_dst++) = *(alpha[ys] + (xs)); } else {