X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/16c1f7f345e1850f590cfbf67c3b00fbb6d2e62e..4db6714b166a733177740b06cd21f31f4bb27896:/src/motif/colour.cpp?ds=inline diff --git a/src/motif/colour.cpp b/src/motif/colour.cpp index c3dca7072c..1cc7b3e3a1 100644 --- a/src/motif/colour.cpp +++ b/src/motif/colour.cpp @@ -12,121 +12,107 @@ //// TODO: make wxColour a ref-counted object, //// so pixel values get shared. -#ifdef __GNUG__ -#pragma implementation "colour.h" -#endif +// For compilers that support precompilation, includes "wx.h". +#include "wx/wxprec.h" #include "wx/gdicmn.h" #include "wx/colour.h" #include "wx/app.h" +#ifdef __VMS__ +#pragma message disable nosimpint +#endif #include +#ifdef __VMS__ +#pragma message enable nosimpint +#endif #include "wx/motif/private.h" -#if !USE_SHARED_LIBRARY IMPLEMENT_DYNAMIC_CLASS(wxColour, wxObject) -#endif // Colour -wxColour::wxColour () +void wxColour::Init() { - m_isInit = FALSE; - m_red = m_blue = m_green = 0; + m_isInit = false; + m_red = + m_blue = + m_green = 0; m_pixel = -1; } -wxColour::wxColour (unsigned char r, unsigned char g, unsigned char b) +wxColour::wxColour() { - m_red = r; - m_green = g; - m_blue = b; - m_isInit = TRUE; - m_pixel = -1; + Init(); } -wxColour::wxColour (const wxColour& col) +wxColour::wxColour(const wxColour& col) +{ + *this = col; +} + +wxColour& wxColour::operator =(const wxColour& col) { m_red = col.m_red; m_green = col.m_green; m_blue = col.m_blue; m_isInit = col.m_isInit; m_pixel = col.m_pixel; + return *this; } -wxColour& wxColour::operator =(const wxColour& col) +void wxColour::InitFromName(const wxString& name) { - m_red = col.m_red; - m_green = col.m_green; - m_blue = col.m_blue; - m_isInit = col.m_isInit; - m_pixel = col.m_pixel; - return *this; + if ( wxTheColourDatabase ) + { + wxColour col = wxTheColourDatabase->Find(name); + if ( col.Ok() ) + { + *this = col; + return; + } + } + + // leave invalid + Init(); } -wxColour::wxColour (const wxString& col) +/* static */ +wxColour wxColour::CreateByName(const wxString& name) { - wxColour *the_colour = wxTheColourDatabase->FindColour (col); - if (the_colour) - { - m_red = the_colour->Red (); - m_green = the_colour->Green (); - m_blue = the_colour->Blue (); - m_isInit = TRUE; - } - else + wxColour col; + + Display *dpy = wxGlobalDisplay(); + WXColormap colormap = wxTheApp->GetMainColormap( dpy ); + XColor xcol; + if ( XParseColor( dpy, (Colormap)colormap, name.mb_str(), &xcol ) ) { - m_red = 0; - m_green = 0; - m_blue = 0; - m_isInit = FALSE; + col.m_red = xcol.red & 0xff; + col.m_green = xcol.green & 0xff; + col.m_blue = xcol.blue & 0xff; + col.m_isInit = true; + col.m_pixel = -1; } -/* TODO - m_pixel = PALETTERGB (m_red, m_green, m_blue); -*/ -} -wxColour::~wxColour () -{ + return col; } -wxColour& wxColour::operator = (const wxString& col) +wxColour::~wxColour() { - wxColour *the_colour = wxTheColourDatabase->FindColour (col); - if (the_colour) - { - m_red = the_colour->Red (); - m_green = the_colour->Green (); - m_blue = the_colour->Blue (); - m_isInit = TRUE; - } - else - { - m_red = 0; - m_green = 0; - m_blue = 0; - m_isInit = FALSE; - } -/* TODO - m_pixel = PALETTERGB (m_red, m_green, m_blue); -*/ - return (*this); } -void wxColour::Set (unsigned char r, unsigned char g, unsigned char b) +void wxColour::Set(unsigned char r, unsigned char g, unsigned char b) { m_red = r; m_green = g; m_blue = b; - m_isInit = TRUE; -/* TODO - m_pixel = PALETTERGB (m_red, m_green, m_blue); -*/ + m_isInit = true; + m_pixel = -1; } // Allocate a colour, or nearest colour, using the given display. -// If realloc is TRUE, ignore the existing pixel, otherwise just return +// If realloc is true, ignore the existing pixel, otherwise just return // the existing one. // Returns the old or allocated pixel. @@ -136,7 +122,7 @@ void wxColour::Set (unsigned char r, unsigned char g, unsigned char b) int wxColour::AllocColour(WXDisplay* display, bool realloc) { if ((m_pixel != -1) && !realloc) - return m_pixel; + return m_pixel; XColor color; color.red = (unsigned short) Red (); @@ -152,13 +138,13 @@ int wxColour::AllocColour(WXDisplay* display, bool realloc) if (!XAllocColor ((Display*) display, (Colormap) cmap, &color)) { - m_pixel = wxGetBestMatchingPixel((Display*) display, &color,(Colormap) cmap); - return m_pixel; + m_pixel = wxGetBestMatchingPixel((Display*) display, &color,(Colormap) cmap); + return m_pixel; } else { - m_pixel = (int) color.pixel; - return m_pixel; + m_pixel = (int) color.pixel; + return m_pixel; } } @@ -173,29 +159,29 @@ But in many cases, that is still better than always using black. Chris Breeze Improvements: 1) More efficient calculation of RGB distance of colour cell from - the desired colour. There is no need to take the sqrt of 'dist', and - since we are only interested in the top 8-bits of R, G and B we - can perform integer arithmetic. +the desired colour. There is no need to take the sqrt of 'dist', and +since we are only interested in the top 8-bits of R, G and B we +can perform integer arithmetic. 2) Attempt to allocate a read-only colour when a close match is found. - A read-only colour will not change. +A read-only colour will not change. 3) Fall back to the closest match if no read-only colours are available. -Possible further improvements: -1) Scan the lookup table and sort the colour cells in order of -increasing - distance from the desired colour. Then attempt to allocate a -read-only - colour starting from the nearest match. -2) Linear RGB distance is not a particularly good method of colour -matching - (though it is quick). Converting the colour to HLS and then comparing - may give better matching. + Possible further improvements: + 1) Scan the lookup table and sort the colour cells in order of + increasing + distance from the desired colour. Then attempt to allocate a + read-only + colour starting from the nearest match. + 2) Linear RGB distance is not a particularly good method of colour + matching + (though it is quick). Converting the colour to HLS and then comparing + may give better matching. -------------------------------------------*/ int wxGetBestMatchingPixel(Display *display, XColor *desiredColor, Colormap cmap) { if (cmap == (Colormap) NULL) - cmap = (Colormap) wxTheApp->GetMainColormap(display); + cmap = (Colormap) wxTheApp->GetMainColormap(display); int numPixVals = XDisplayCells(display, DefaultScreen (display)); int mindist = 256 * 256 * 3; @@ -216,8 +202,8 @@ int wxGetBestMatchingPixel(Display *display, XColor *desiredColor, Colormap cmap int delta_blue = blue - (matching_color.blue >> 8); int dist = delta_red * delta_red + - delta_green * delta_green + - delta_blue * delta_blue; + delta_green * delta_green + + delta_blue * delta_blue; if (dist <= threshold) {