From a4dcdcf0ffae4c6cf52354fbd63c95d7d7815fd9 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Thu, 19 Aug 1999 13:57:42 +0000 Subject: initial check-in (post crash) --- src/glut/glx/glut_cindex.c | 252 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 252 insertions(+) create mode 100644 src/glut/glx/glut_cindex.c (limited to 'src/glut/glx/glut_cindex.c') diff --git a/src/glut/glx/glut_cindex.c b/src/glut/glx/glut_cindex.c new file mode 100644 index 0000000000..c47b21ea79 --- /dev/null +++ b/src/glut/glx/glut_cindex.c @@ -0,0 +1,252 @@ + +/* Copyright (c) Mark J. Kilgard, 1994, 1996, 1997. */ + +/* This program is freely distributable without licensing fees + and is provided without guarantee or warrantee expressed or + implied. This program is -not- in the public domain. */ + +#include +#include "glutint.h" + +#define CLAMP(i) ((i) > 1.0 ? 1.0 : ((i) < 0.0 ? 0.0 : (i))) + +/* CENTRY */ +void APIENTRY +glutSetColor(int ndx, GLfloat red, GLfloat green, GLfloat blue) +{ + GLUTcolormap *cmap, *newcmap; + XVisualInfo *vis; + XColor color; + int i; + + if (__glutCurrentWindow->renderWin == __glutCurrentWindow->win) { + cmap = __glutCurrentWindow->colormap; + vis = __glutCurrentWindow->vis; + } else { + cmap = __glutCurrentWindow->overlay->colormap; + vis = __glutCurrentWindow->overlay->vis; + if (ndx == __glutCurrentWindow->overlay->transparentPixel) { + __glutWarning( + "glutSetColor: cannot set color of overlay transparent index %d\n", + ndx); + return; + } + } + + if (!cmap) { + __glutWarning("glutSetColor: current window is RGBA"); + return; + } +#if defined(_WIN32) + if (ndx >= 256 || /* always assume 256 colors on Win32 */ +#else + if (ndx >= vis->visual->map_entries || +#endif + ndx < 0) { + __glutWarning("glutSetColor: index %d out of range", ndx); + return; + } + if (cmap->refcnt > 1) { + newcmap = __glutAssociateNewColormap(vis); + cmap->refcnt--; + /* Wouldn't it be nice if XCopyColormapAndFree could be + told not to free the old colormap's entries! */ + for (i = cmap->size - 1; i >= 0; i--) { + if (i == ndx) { + /* We are going to set this cell shortly! */ + continue; + } + if (cmap->cells[i].component[GLUT_RED] >= 0.0) { + color.pixel = i; + newcmap->cells[i].component[GLUT_RED] = + cmap->cells[i].component[GLUT_RED]; + color.red = (GLfloat) 0xffff * + cmap->cells[i].component[GLUT_RED]; + newcmap->cells[i].component[GLUT_GREEN] = + cmap->cells[i].component[GLUT_GREEN]; + color.green = (GLfloat) 0xffff * + cmap->cells[i].component[GLUT_GREEN]; + newcmap->cells[i].component[GLUT_BLUE] = + cmap->cells[i].component[GLUT_BLUE]; + color.blue = (GLfloat) 0xffff * + cmap->cells[i].component[GLUT_BLUE]; + color.flags = DoRed | DoGreen | DoBlue; +#if defined(_WIN32) + if (IsWindowVisible(__glutCurrentWindow->win)) { + XHDC = __glutCurrentWindow->hdc; + } else { + XHDC = 0; + } +#endif + XStoreColor(__glutDisplay, newcmap->cmap, &color); + } else { + /* Leave unallocated entries unallocated. */ + } + } + cmap = newcmap; + if (__glutCurrentWindow->renderWin == __glutCurrentWindow->win) { + __glutCurrentWindow->colormap = cmap; + __glutCurrentWindow->cmap = cmap->cmap; + } else { + __glutCurrentWindow->overlay->colormap = cmap; + __glutCurrentWindow->overlay->cmap = cmap->cmap; + } + XSetWindowColormap(__glutDisplay, + __glutCurrentWindow->renderWin, cmap->cmap); + +#if !defined(_WIN32) + { + GLUTwindow *toplevel; + + toplevel = __glutToplevelOf(__glutCurrentWindow); + if (toplevel->cmap != cmap->cmap) { + __glutPutOnWorkList(toplevel, GLUT_COLORMAP_WORK); + } + } +#endif + } + color.pixel = ndx; + red = CLAMP(red); + cmap->cells[ndx].component[GLUT_RED] = red; + color.red = (GLfloat) 0xffff *red; + green = CLAMP(green); + cmap->cells[ndx].component[GLUT_GREEN] = green; + color.green = (GLfloat) 0xffff *green; + blue = CLAMP(blue); + cmap->cells[ndx].component[GLUT_BLUE] = blue; + color.blue = (GLfloat) 0xffff *blue; + color.flags = DoRed | DoGreen | DoBlue; +#if defined(_WIN32) + if (IsWindowVisible(__glutCurrentWindow->win)) { + XHDC = __glutCurrentWindow->hdc; + } else { + XHDC = 0; + } +#endif + XStoreColor(__glutDisplay, cmap->cmap, &color); +} + +GLfloat APIENTRY +glutGetColor(int ndx, int comp) +{ + GLUTcolormap *colormap; + XVisualInfo *vis; + + if (__glutCurrentWindow->renderWin == __glutCurrentWindow->win) { + colormap = __glutCurrentWindow->colormap; + vis = __glutCurrentWindow->vis; + } else { + colormap = __glutCurrentWindow->overlay->colormap; + vis = __glutCurrentWindow->overlay->vis; + if (ndx == __glutCurrentWindow->overlay->transparentPixel) { + __glutWarning("glutGetColor: requesting overlay transparent index %d\n", + ndx); + return -1.0; + } + } + + if (!colormap) { + __glutWarning("glutGetColor: current window is RGBA"); + return -1.0; + } +#if defined(_WIN32) +#define OUT_OF_RANGE_NDX(ndx) (ndx >= 256 || ndx < 0) +#else +#define OUT_OF_RANGE_NDX(ndx) (ndx >= vis->visual->map_entries || ndx < 0) +#endif + if (OUT_OF_RANGE_NDX(ndx)) { + __glutWarning("glutGetColor: index %d out of range", ndx); + return -1.0; + } + return colormap->cells[ndx].component[comp]; +} + +void APIENTRY +glutCopyColormap(int winnum) +{ + GLUTwindow *window = __glutWindowList[winnum - 1]; + GLUTcolormap *oldcmap, *newcmap; + XVisualInfo *dstvis; + + if (__glutCurrentWindow->renderWin == __glutCurrentWindow->win) { + oldcmap = __glutCurrentWindow->colormap; + dstvis = __glutCurrentWindow->vis; + newcmap = window->colormap; + } else { + oldcmap = __glutCurrentWindow->overlay->colormap; + dstvis = __glutCurrentWindow->overlay->vis; + if (!window->overlay) { + __glutWarning("glutCopyColormap: window %d has no overlay", winnum); + return; + } + newcmap = window->overlay->colormap; + } + + if (!oldcmap) { + __glutWarning("glutCopyColormap: destination colormap must be color index"); + return; + } + if (!newcmap) { + __glutWarning( + "glutCopyColormap: source colormap of window %d must be color index", + winnum); + return; + } + if (newcmap == oldcmap) { + /* Source and destination are the same; now copy needed. */ + return; + } +#if !defined(_WIN32) + /* Play safe: compare visual IDs, not Visual*'s. */ + if (newcmap->visual->visualid == oldcmap->visual->visualid) { +#endif + /* Visuals match! "Copy" by reference... */ + __glutFreeColormap(oldcmap); + newcmap->refcnt++; + if (__glutCurrentWindow->renderWin == __glutCurrentWindow->win) { + __glutCurrentWindow->colormap = newcmap; + __glutCurrentWindow->cmap = newcmap->cmap; + } else { + __glutCurrentWindow->overlay->colormap = newcmap; + __glutCurrentWindow->overlay->cmap = newcmap->cmap; + } + XSetWindowColormap(__glutDisplay, __glutCurrentWindow->renderWin, + newcmap->cmap); +#if !defined(_WIN32) + __glutPutOnWorkList(__glutToplevelOf(window), GLUT_COLORMAP_WORK); + } else { + GLUTcolormap *copycmap; + XColor color; + int i, last; + + /* Visuals different - need a distinct X colormap! */ + copycmap = __glutAssociateNewColormap(dstvis); + /* Wouldn't it be nice if XCopyColormapAndFree could be + told not to free the old colormap's entries! */ + last = newcmap->size; + if (last > copycmap->size) { + last = copycmap->size; + } + for (i = last - 1; i >= 0; i--) { + if (newcmap->cells[i].component[GLUT_RED] >= 0.0) { + color.pixel = i; + copycmap->cells[i].component[GLUT_RED] = + newcmap->cells[i].component[GLUT_RED]; + color.red = (GLfloat) 0xffff * + newcmap->cells[i].component[GLUT_RED]; + copycmap->cells[i].component[GLUT_GREEN] = + newcmap->cells[i].component[GLUT_GREEN]; + color.green = (GLfloat) 0xffff * + newcmap->cells[i].component[GLUT_GREEN]; + copycmap->cells[i].component[GLUT_BLUE] = + newcmap->cells[i].component[GLUT_BLUE]; + color.blue = (GLfloat) 0xffff * + newcmap->cells[i].component[GLUT_BLUE]; + color.flags = DoRed | DoGreen | DoBlue; + XStoreColor(__glutDisplay, copycmap->cmap, &color); + } + } + } +#endif +} +/* ENDCENTRY */ -- cgit v1.2.3