+/////////////////////////////////////////////////////////////////////////////
+// Name: src/x11/utilsx.cpp
+// Purpose: Private functions common to X11 and Motif ports
+// Author: Mattia Barbon
+// Modified by:
+// Created: 05/04/03
+// RCS-ID: $Id$
+// Copyright: (c) Mattia Barbon
+// Licence: wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#include "wx/x11/privx.h"
+
+// ----------------------------------------------------------------------------
+// wxXVisualInfo
+// ----------------------------------------------------------------------------
+
+#if !wxUSE_NANOX
+
+bool wxFillXVisualInfo( wxXVisualInfo* vi, Display* dpy )
+{
+ int xscreen = DefaultScreen( dpy );
+ Visual* vis = DefaultVisual( dpy, xscreen );
+ int bpp = DefaultDepth( dpy, xscreen );
+
+ XVisualInfo vinfo_template;
+ XVisualInfo *vinfo;
+
+ vinfo_template.visual = vis;
+ vinfo_template.visualid = XVisualIDFromVisual( vis );
+ vinfo_template.depth = bpp;
+ int nitem = 0;
+
+ vinfo = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask,
+ &vinfo_template, &nitem );
+
+ wxCHECK_MSG( vinfo, false, wxT("no visual") );
+
+ vi->Init( dpy, vinfo );
+
+ XFree(vinfo);
+
+ return true;
+}
+
+inline int ABS(int x) { return x < 0 ? -x : x; }
+
+static void wxCalcPrecAndShift( unsigned long mask, int *shift, int *prec )
+{
+ *shift = 0;
+ *prec = 0;
+
+ while (!(mask & 0x1))
+ {
+ (*shift)++;
+ mask >>= 1;
+ }
+
+ while (mask & 0x1)
+ {
+ (*prec)++;
+ mask >>= 1;
+ }
+}
+
+wxXVisualInfo::wxXVisualInfo()
+{
+ m_visualColormap = NULL;
+ m_colorCube = NULL;
+}
+
+wxXVisualInfo::~wxXVisualInfo()
+{
+ if (m_colorCube)
+ free( m_colorCube );
+
+ if (m_visualColormap)
+ delete [] (XColor*)m_visualColormap;
+}
+
+void wxXVisualInfo::Init( Display* dpy, XVisualInfo* vi )
+{
+ 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 = vi->depth;
+ if (vi->depth == 16)
+ vi->depth = m_visualRedPrec + m_visualGreenPrec + m_visualBluePrec;
+
+ m_visualColormapSize = vi->colormap_size;
+
+ if (m_visualDepth > 8)
+ return;
+
+ m_visualColormap = new XColor[m_visualColormapSize];
+ XColor* colors = (XColor*) m_visualColormap;
+
+ for (int i = 0; i < m_visualColormapSize; i++)
+ colors[i].pixel = i;
+
+ XQueryColors( dpy, DefaultColormap(dpy, vi->screen),
+ 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 // !wxUSE_NANOX
projects / wxWidgets.git / commitdiff
