+#if !wxUSE_NANOX
+ // Get info about the current visual. It is enough
+ // to do this once here unless we support different
+ // visuals, displays and screens. Given that wxX11
+ // mostly for embedded things, that is no real
+ // limitation.
+ Display *xdisplay = (Display*) wxApp::GetDisplay();
+ int xscreen = DefaultScreen(xdisplay);
+ Visual* xvisual = DefaultVisual(xdisplay,xscreen);
+ int xdepth = DefaultDepth(xdisplay, xscreen);
+
+ XVisualInfo vinfo_template;
+ vinfo_template.visual = xvisual;
+ vinfo_template.visualid = XVisualIDFromVisual( xvisual );
+ vinfo_template.depth = xdepth;
+
+ int nitem = 0;
+ XVisualInfo *vi = XGetVisualInfo( xdisplay, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
+ wxASSERT_MSG( vi, wxT("No visual info") );
+
+ m_visualType = vi->visual->c_class;
+ m_visualScreen = vi->screen;
+
+ m_visualRedMask = vi->red_mask;
+ m_visualGreenMask = vi->green_mask;
+ m_visualBlueMask = vi->blue_mask;
+
+ if (m_visualType != GrayScale && m_visualType != PseudoColor)
+ {
+ wxCalcPrecAndShift( m_visualRedMask, &m_visualRedShift, &m_visualRedPrec );
+ wxCalcPrecAndShift( m_visualGreenMask, &m_visualGreenShift, &m_visualGreenPrec );
+ wxCalcPrecAndShift( m_visualBlueMask, &m_visualBlueShift, &m_visualBluePrec );
+ }
+
+ m_visualDepth = xdepth;
+ if (xdepth == 16)
+ xdepth = m_visualRedPrec + m_visualGreenPrec + m_visualBluePrec;
+
+ m_visualColormapSize = vi->colormap_size;
+
+ XFree( vi );
+
+ if (m_visualDepth > 8)
+ return TRUE;
+
+ m_visualColormap = new XColor[m_visualColormapSize];
+ XColor* colors = (XColor*) m_visualColormap;
+
+ for (int i = 0; i < m_visualColormapSize; i++)
+ colors[i].pixel = i;
+
+ XQueryColors( xdisplay, DefaultColormap(xdisplay,xscreen), colors, m_visualColormapSize );
+
+ m_colorCube = (unsigned char*)malloc(32 * 32 * 32);
+
+ for (int r = 0; r < 32; r++)
+ {
+ for (int g = 0; g < 32; g++)
+ {
+ for (int b = 0; b < 32; b++)
+ {
+ int rr = (r << 3) | (r >> 2);
+ int gg = (g << 3) | (g >> 2);
+ int bb = (b << 3) | (b >> 2);
+
+ int index = -1;
+
+ if (colors)
+ {
+ int max = 3 * 65536;
+
+ for (int i = 0; i < m_visualColormapSize; i++)
+ {
+ int rdiff = ((rr << 8) - colors[i].red);
+ int gdiff = ((gg << 8) - colors[i].green);
+ int bdiff = ((bb << 8) - colors[i].blue);
+ int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
+ if (sum < max)
+ {
+ index = i; max = sum;
+ }
+ }
+ }
+ else
+ {
+ // assume 8-bit true or static colors. this really exists
+ index = (r >> (5 - m_visualRedPrec)) << m_visualRedShift;
+ index |= (g >> (5 - m_visualGreenPrec)) << m_visualGreenShift;
+ index |= (b >> (5 - m_visualBluePrec)) << m_visualBlueShift;
+ }
+ m_colorCube[ (r*1024) + (g*32) + b ] = index;
+ }
+ }
+ }
+#endif
+
projects / wxWidgets.git / blobdiff