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netgen/ng/Togl-1.7/togl.c
Joachim Schoeberl eeac7442f3 including togl
2014-09-15 08:48:30 +00:00

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/* $Id: togl.c,v 1.73 2005/10/26 07:40:22 gregcouch Exp $ */
/* vi:set sw=4: */
/*
* Togl - a Tk OpenGL widget
*
* Copyright (C) 1996-2002 Brian Paul and Ben Bederson
* See the LICENSE file for copyright details.
*/
/*
* Currently we support X11, Win32 and Macintosh only
*/
#include "togl.h"
/* Use TCL_STUPID to cast (const char *) to (char *) where the Tcl function
* prototype argument should really be const */
#define TCL_STUPID (char *)
/* Use WIDGREC to cast widgRec arguments */
#define WIDGREC (char *)
/*** Windows headers ***/
#if defined(TOGL_WGL)
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
# undef WIN32_LEAN_AND_MEAN
# include <winnt.h>
/*** X Window System headers ***/
#elif defined(TOGL_X11)
# include <X11/Xlib.h>
# include <X11/Xutil.h>
# include <X11/Xatom.h> /* for XA_RGB_DEFAULT_MAP atom */
# if defined(__vms)
# include <X11/StdCmap.h> /* for XmuLookupStandardColormap */
# else
# include <X11/Xmu/StdCmap.h> /* for XmuLookupStandardColormap */
# endif
# include <GL/glx.h>
/*** Mac headers ***/
#elif defined(TOGL_AGL_CLASSIC)
# include <Gestalt.h>
# include <Traps.h>
# include <agl.h>
# include <tclMacCommonPch.h>
#elif defined(TOGL_AGL)
# define Cursor QDCursor
# include <AGL/agl.h>
# undef Cursor
# include "tkMacOSX.h"
# include <tkMacOSXInt.h> /* usa MacDrawable */
# include <ApplicationServices/ApplicationServices.h>
#else /* make sure only one platform defined */
# error Unsupported platform, or confused platform defines...
#endif
/*** Standard C headers ***/
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#ifdef TOGL_WGL
# include <tkPlatDecls.h>
#endif
#if TK_MAJOR_VERSION < 8
# error Sorry Togl requires Tcl/Tk ver 8.0 or higher.
#endif
#if defined(TOGL_AGL_CLASSIC)
# if TK_MAJOR_VERSION < 8 || (TK_MAJOR_VERSION == 8 && TK_MINOR_VERSION < 3)
# error Sorry Mac classic version requires Tcl/Tk ver 8.3.0 or higher.
# endif
#endif /* TOGL_AGL_CLASSIC */
#if defined(TOGL_AGL)
# if TK_MAJOR_VERSION < 8 || (TK_MAJOR_VERSION == 8 && TK_MINOR_VERSION < 4)
# error Sorry Mac Aqua version requires Tcl/Tk ver 8.4.0 or higher.
# endif
#endif /* TOGL_AGL */
/* workaround for bug #123153 in tcl ver8.4a2 (tcl.h) */
#if defined(Tcl_InitHashTable) && defined(USE_TCL_STUBS)
# undef Tcl_InitHashTable
# define Tcl_InitHashTable (tclStubsPtr->tcl_InitHashTable)
#endif
#if TK_MAJOR_VERSION > 8 || (TK_MAJOR_VERSION == 8 && TK_MINOR_VERSION >= 4)
# define HAVE_TK_SETCLASSPROCS
/* pointer to Tk_SetClassProcs function in the stub table */
static void (*SetClassProcsPtr)
_ANSI_ARGS_((Tk_Window, Tk_ClassProcs *, ClientData));
#endif
/*
* Copy of TkClassProcs declarations form tkInt.h
* (this is needed for Tcl ver =< 8.4a3)
*/
typedef Window (TkClassCreateProc) _ANSI_ARGS_((Tk_Window tkwin,
Window parent, ClientData instanceData));
typedef void (TkClassGeometryProc) _ANSI_ARGS_((ClientData instanceData));
typedef void (TkClassModalProc) _ANSI_ARGS_((Tk_Window tkwin,
XEvent *eventPtr));
typedef struct TkClassProcs
{
TkClassCreateProc *createProc;
TkClassGeometryProc *geometryProc;
TkClassModalProc *modalProc;
} TkClassProcs;
/* Defaults */
#define DEFAULT_WIDTH "400"
#define DEFAULT_HEIGHT "400"
#define DEFAULT_IDENT ""
#define DEFAULT_FONTNAME "fixed"
#define DEFAULT_TIME "1"
#ifdef TOGL_WGL
/* Maximum size of a logical palette corresponding to a colormap in color index
* mode. */
# define MAX_CI_COLORMAP_SIZE 4096
# if TOGL_USE_FONTS != 1
/*
* copy of TkWinColormap from tkWinInt.h
*/
typedef struct
{
HPALETTE palette; /* Palette handle used when drawing. */
UINT size; /* Number of entries in the palette. */
int stale; /* 1 if palette needs to be realized, otherwise
* 0. If the palette is stale, then an idle
* handler is scheduled to realize the palette. */
Tcl_HashTable refCounts; /* Hash table of palette entry reference counts
* indexed by pixel value. */
} TkWinColormap;
# else
# include "tkWinInt.h"
# endif
static LRESULT(CALLBACK *tkWinChildProc) (HWND hwnd, UINT message,
WPARAM wParam, LPARAM lParam) = NULL;
# define TK_WIN_CHILD_CLASS_NAME "TkChild"
#endif /* TOGL_WGL */
#define MAX(a,b) (((a)>(b))?(a):(b))
#define TCL_ERR(interp, string) \
do { \
Tcl_ResetResult(interp); \
Tcl_AppendResult(interp, string, NULL); \
return TCL_ERROR; \
} while (0)
/* The constant DUMMY_WINDOW is used to signal window creation failure from the
* Togl_CreateWindow() */
#define DUMMY_WINDOW ((Window) -1)
#define ALL_EVENTS_MASK \
(KeyPressMask | \
KeyReleaseMask | \
ButtonPressMask | \
ButtonReleaseMask | \
EnterWindowMask | \
LeaveWindowMask | \
PointerMotionMask | \
ExposureMask | \
VisibilityChangeMask | \
FocusChangeMask | \
PropertyChangeMask | \
ColormapChangeMask)
struct Togl
{
Togl *Next; /* next in linked list */
#if defined(TOGL_WGL)
HDC tglGLHdc; /* Device context of device that OpenGL calls
* will be drawn on */
HGLRC tglGLHglrc; /* OpenGL rendering context to be made current */
int CiColormapSize; /* (Maximum) size of colormap in color index
* mode */
#elif defined(TOGL_X11)
GLXContext GlCtx; /* Normal planes GLX context */
#elif defined(TOGL_AGL_CLASSIC) || defined(TOGL_AGL)
AGLContext aglCtx;
#endif /* TOGL_WGL */
Display *display; /* X's token for the window's display. */
Tk_Window TkWin; /* Tk window structure */
Tcl_Interp *Interp; /* Tcl interpreter */
Tcl_Command widgetCmd; /* Token for togl's widget command */
#ifndef NO_TK_CURSOR
Tk_Cursor Cursor; /* The widget's cursor */
#endif
int Width, Height; /* Dimensions of window */
int SetGrid; /* positive is grid size for window manager */
int TimerInterval; /* Time interval for timer in milliseconds */
#if (TCL_MAJOR_VERSION * 100 + TCL_MINOR_VERSION) >= 705
Tcl_TimerToken timerHandler; /* Token for togl's timer handler */
#else
Tk_TimerToken timerHandler; /* Token for togl's timer handler */
#endif
Bool RgbaFlag; /* configuration flags (ala GLX parameters) */
int RgbaRed;
int RgbaGreen;
int RgbaBlue;
Bool DoubleFlag;
Bool DepthFlag;
int DepthSize;
Bool AccumFlag;
int AccumRed;
int AccumGreen;
int AccumBlue;
int AccumAlpha;
Bool AlphaFlag;
int AlphaSize;
Bool StencilFlag;
int StencilSize;
Bool PrivateCmapFlag;
Bool OverlayFlag;
Bool StereoFlag;
#ifdef __sgi
Bool OldStereoFlag;
#endif
int AuxNumber;
Bool Indirect;
int PixelFormat;
const char *ShareList; /* name (ident) of Togl to share dlists with */
const char *ShareContext; /* name (ident) to share OpenGL context with */
const char *Ident; /* User's identification string */
ClientData Client_Data; /* Pointer to user data */
Bool UpdatePending; /* Should normal planes be redrawn? */
Togl_Callback *CreateProc; /* Callback when widget is created */
Togl_Callback *DisplayProc; /* Callback when widget is rendered */
Togl_Callback *ReshapeProc; /* Callback when window size changes */
Togl_Callback *DestroyProc; /* Callback when widget is destroyed */
Togl_Callback *TimerProc; /* Callback when widget is idle */
/* Overlay stuff */
#if defined(TOGL_X11)
GLXContext OverlayCtx; /* Overlay planes OpenGL context */
#elif defined(TOGL_WGL)
HGLRC tglGLOverlayHglrc;
#endif /* TOGL_X11 */
Window OverlayWindow; /* The overlay window, or 0 */
Togl_Callback *OverlayDisplayProc; /* Overlay redraw proc */
Bool OverlayUpdatePending; /* Should overlay be redrawn? */
Colormap OverlayCmap; /* colormap for overlay is created */
int OverlayTransparentPixel; /* transparent pixel */
Bool OverlayIsMapped;
/* for DumpToEpsFile: Added by Miguel A. de Riera Pasenau 10.01.1997 */
XVisualInfo *VisInfo; /* Visual info of the current */
/* context needed for DumpToEpsFile */
GLfloat *EpsRedMap; /* Index2RGB Maps for Color index modes */
GLfloat *EpsGreenMap;
GLfloat *EpsBlueMap;
GLint EpsMapSize; /* = Number of indices in our Togl */
};
/* NTNTNT need to change to handle Windows Data Types */
/*
* Prototypes for functions local to this file
*/
static int Togl_Cmd(ClientData clientData, Tcl_Interp *interp,
int argc, CONST84 char **argv);
static void Togl_EventProc(ClientData clientData, XEvent *eventPtr);
static Window Togl_CreateWindow(Tk_Window, Window, ClientData);
static void Togl_WorldChanged(ClientData);
#ifdef MESA_COLOR_HACK
static int get_free_color_cells(Display *display, int screen,
Colormap colormap);
static void free_default_color_cells(Display *display, Colormap colormap);
#endif
static void ToglCmdDeletedProc(ClientData);
#if defined(__sgi)
/* SGI-only stereo */
static void oldStereoMakeCurrent(Display *dpy, Window win, GLXContext ctx);
static void oldStereoInit(Togl *togl, int stereoEnabled);
#endif
#if defined(TOGL_AGL_CLASSIC) || defined(TOGL_AGL)
static void SetMacBufRect(Togl *togl);
#endif
/*
* Setup Togl widget configuration options:
*/
static Tk_ConfigSpec configSpecs[] = {
{TK_CONFIG_PIXELS, TCL_STUPID "-height", "height", "Height",
DEFAULT_HEIGHT, Tk_Offset(Togl, Height), 0, NULL},
{TK_CONFIG_PIXELS, TCL_STUPID "-width", "width", "Width",
DEFAULT_WIDTH, Tk_Offset(Togl, Width), 0, NULL},
{TK_CONFIG_INT, TCL_STUPID "-setgrid", "setGrid", "SetGrid",
"0", Tk_Offset(Togl, SetGrid), 0},
{TK_CONFIG_BOOLEAN, TCL_STUPID "-rgba", "rgba", "Rgba",
"true", Tk_Offset(Togl, RgbaFlag), 0, NULL},
{TK_CONFIG_INT, TCL_STUPID "-redsize", "redsize", "RedSize",
"1", Tk_Offset(Togl, RgbaRed), 0, NULL},
{TK_CONFIG_INT, TCL_STUPID "-greensize", "greensize", "GreenSize",
"1", Tk_Offset(Togl, RgbaGreen), 0, NULL},
{TK_CONFIG_INT, TCL_STUPID "-bluesize", "bluesize", "BlueSize",
"1", Tk_Offset(Togl, RgbaBlue), 0, NULL},
{TK_CONFIG_BOOLEAN, TCL_STUPID "-double", "double", "Double",
"false", Tk_Offset(Togl, DoubleFlag), 0, NULL},
{TK_CONFIG_BOOLEAN, TCL_STUPID "-depth", "depth", "Depth",
"false", Tk_Offset(Togl, DepthFlag), 0, NULL},
{TK_CONFIG_INT, TCL_STUPID "-depthsize", "depthsize", "DepthSize",
"1", Tk_Offset(Togl, DepthSize), 0, NULL},
{TK_CONFIG_BOOLEAN, TCL_STUPID "-accum", "accum", "Accum",
"false", Tk_Offset(Togl, AccumFlag), 0, NULL},
{TK_CONFIG_INT, TCL_STUPID "-accumredsize", "accumredsize", "AccumRedSize",
"1", Tk_Offset(Togl, AccumRed), 0, NULL},
{TK_CONFIG_INT, TCL_STUPID "-accumgreensize", "accumgreensize",
"AccumGreenSize",
"1", Tk_Offset(Togl, AccumGreen), 0, NULL},
{TK_CONFIG_INT, TCL_STUPID "-accumbluesize", "accumbluesize",
"AccumBlueSize",
"1", Tk_Offset(Togl, AccumBlue), 0, NULL},
{TK_CONFIG_INT, TCL_STUPID "-accumalphasize", "accumalphasize",
"AccumAlphaSize",
"1", Tk_Offset(Togl, AccumAlpha), 0, NULL},
{TK_CONFIG_BOOLEAN, TCL_STUPID "-alpha", "alpha", "Alpha",
"false", Tk_Offset(Togl, AlphaFlag), 0, NULL},
{TK_CONFIG_INT, TCL_STUPID "-alphasize", "alphasize", "AlphaSize",
"1", Tk_Offset(Togl, AlphaSize), 0, NULL},
{TK_CONFIG_BOOLEAN, TCL_STUPID "-stencil", "stencil", "Stencil",
"false", Tk_Offset(Togl, StencilFlag), 0, NULL},
{TK_CONFIG_INT, TCL_STUPID "-stencilsize", "stencilsize", "StencilSize",
"1", Tk_Offset(Togl, StencilSize), 0, NULL},
{TK_CONFIG_INT, TCL_STUPID "-auxbuffers", "auxbuffers", "AuxBuffers",
"0", Tk_Offset(Togl, AuxNumber), 0, NULL},
{TK_CONFIG_BOOLEAN, TCL_STUPID "-privatecmap", "privateCmap", "PrivateCmap",
"false", Tk_Offset(Togl, PrivateCmapFlag), 0, NULL},
{TK_CONFIG_BOOLEAN, TCL_STUPID "-overlay", "overlay", "Overlay",
"false", Tk_Offset(Togl, OverlayFlag), 0, NULL},
{TK_CONFIG_BOOLEAN, TCL_STUPID "-stereo", "stereo", "Stereo",
"false", Tk_Offset(Togl, StereoFlag), 0, NULL},
#ifdef __sgi
{TK_CONFIG_BOOLEAN, TCL_STUPID "-oldstereo", "oldstereo", "OldStereo",
"false", Tk_Offset(Togl, OldStereoFlag), 0, NULL},
#endif
#ifndef NO_TK_CURSOR
{TK_CONFIG_ACTIVE_CURSOR, TCL_STUPID "-cursor", "cursor", "Cursor",
"", Tk_Offset(Togl, Cursor), TK_CONFIG_NULL_OK},
#endif
{TK_CONFIG_INT, TCL_STUPID "-time", "time", "Time",
DEFAULT_TIME, Tk_Offset(Togl, TimerInterval), 0, NULL},
{TK_CONFIG_STRING, TCL_STUPID "-sharelist", "sharelist", "ShareList",
NULL, Tk_Offset(Togl, ShareList), 0, NULL},
{TK_CONFIG_STRING, TCL_STUPID "-sharecontext", "sharecontext",
"ShareContext", NULL, Tk_Offset(Togl, ShareContext), 0, NULL},
{TK_CONFIG_STRING, TCL_STUPID "-ident", "ident", "Ident",
DEFAULT_IDENT, Tk_Offset(Togl, Ident), 0, NULL},
{TK_CONFIG_BOOLEAN, TCL_STUPID "-indirect", "indirect", "Indirect",
"false", Tk_Offset(Togl, Indirect), 0, NULL},
{TK_CONFIG_INT, TCL_STUPID "-pixelformat", "pixelFormat", "PixelFormat",
"0", Tk_Offset(Togl, PixelFormat), 0, NULL},
{TK_CONFIG_END, NULL, NULL, NULL, NULL, 0, 0, NULL}
};
/*
* Default callback pointers. When a new Togl widget is created it
* will be assigned these initial callbacks.
*/
static Togl_Callback *DefaultCreateProc = NULL;
static Togl_Callback *DefaultDisplayProc = NULL;
static Togl_Callback *DefaultReshapeProc = NULL;
static Togl_Callback *DefaultDestroyProc = NULL;
static Togl_Callback *DefaultOverlayDisplayProc = NULL;
static Togl_Callback *DefaultTimerProc = NULL;
static ClientData DefaultClientData = NULL;
static Tcl_HashTable CommandTable;
/*
* Head of linked list of all Togl widgets
*/
static Togl *ToglHead = NULL;
/*
* Add given togl widget to linked list.
*/
static void
AddToList(Togl *t)
{
t->Next = ToglHead;
ToglHead = t;
}
/*
* Remove given togl widget from linked list.
*/
static void
RemoveFromList(Togl *t)
{
Togl *prev = NULL;
Togl *pos = ToglHead;
while (pos) {
if (pos == t) {
if (prev) {
prev->Next = pos->Next;
} else {
ToglHead = pos->Next;
}
return;
}
prev = pos;
pos = pos->Next;
}
}
/*
* Return pointer to togl widget given a user identifier string.
*/
static Togl *
FindTogl(const char *ident)
{
Togl *t = ToglHead;
while (t) {
if (strcmp(t->Ident, ident) == 0)
return t;
t = t->Next;
}
return NULL;
}
#if defined(TOGL_X11)
/*
* Return pointer to another togl widget with same OpenGL context.
*/
static Togl *
FindToglWithSameContext(Togl *togl)
{
Togl *t;
for (t = ToglHead; t != NULL; t = t->Next) {
if (t == togl)
continue;
# if defined(TOGL_WGL)
if (t->tglGLHglrc == togl->tglGLHglrc)
# elif defined(TOGL_X11)
if (t->GlCtx == togl->GlCtx)
# elif defined(TOGL_AGL_CLASSIC) || defined(TOGL_AGL)
if (t->aglCtx == togl->aglCtx)
# endif
return t;
}
return NULL;
}
#endif
#ifdef USE_OVERLAY
/*
* Return pointer to another togl widget with same OpenGL overlay context.
*/
static Togl *
FindToglWithSameOverlayContext(Togl *togl)
{
Togl *t;
for (t = ToglHead; t != NULL; t = t->Next) {
if (t == togl)
continue;
# if defined(TOGL_X11)
if (t->OverlayCtx == togl->OverlayCtx)
# elif defined(TOGL_WGL)
if (t->tglGLOverlayHglrc == togl->tglGLOverlayHglrc)
# endif
return t;
}
return NULL;
}
#endif
#if defined(TOGL_X11)
/*
* Return an X colormap to use for OpenGL RGB-mode rendering.
* Input: dpy - the X display
* scrnum - the X screen number
* visinfo - the XVisualInfo as returned by glXChooseVisual()
* Return: an X Colormap or 0 if there's a _serious_ error.
*/
static Colormap
get_rgb_colormap(Display *dpy,
int scrnum, const XVisualInfo *visinfo, Tk_Window tkwin)
{
Atom hp_cr_maps;
Status status;
int numCmaps;
int i;
XStandardColormap *standardCmaps;
Window root = XRootWindow(dpy, scrnum);
Bool using_mesa;
/*
* First check if visinfo's visual matches the default/root visual.
*/
if (visinfo->visual == Tk_Visual(tkwin)) {
/* use the default/root colormap */
Colormap cmap;
cmap = Tk_Colormap(tkwin);
# ifdef MESA_COLOR_HACK
(void) get_free_color_cells(dpy, scrnum, cmap);
# endif
return cmap;
}
/*
* Check if we're using Mesa.
*/
if (strstr(glXQueryServerString(dpy, scrnum, GLX_VERSION), "Mesa")) {
using_mesa = True;
} else {
using_mesa = False;
}
/*
* Next, if we're using Mesa and displaying on an HP with the "Color
* Recovery" feature and the visual is 8-bit TrueColor, search for a
* special colormap initialized for dithering. Mesa will know how to
* dither using this colormap.
*/
if (using_mesa) {
hp_cr_maps = XInternAtom(dpy, "_HP_RGB_SMOOTH_MAP_LIST", True);
if (hp_cr_maps
# ifdef __cplusplus
&& visinfo->visual->c_class == TrueColor
# else
&& visinfo->visual->class == TrueColor
# endif
&& visinfo->depth == 8) {
status = XGetRGBColormaps(dpy, root, &standardCmaps,
&numCmaps, hp_cr_maps);
if (status) {
for (i = 0; i < numCmaps; i++) {
if (standardCmaps[i].visualid == visinfo->visual->visualid) {
Colormap cmap = standardCmaps[i].colormap;
(void) XFree(standardCmaps);
return cmap;
}
}
(void) XFree(standardCmaps);
}
}
}
/*
* Next, try to find a standard X colormap.
*/
# if !HP && !SUN
# ifndef SOLARIS_BUG
status = XmuLookupStandardColormap(dpy, visinfo->screen,
visinfo->visualid, visinfo->depth, XA_RGB_DEFAULT_MAP,
/* replace */ False, /* retain */ True);
if (status == 1) {
status = XGetRGBColormaps(dpy, root, &standardCmaps,
&numCmaps, XA_RGB_DEFAULT_MAP);
if (status == 1) {
for (i = 0; i < numCmaps; i++) {
if (standardCmaps[i].visualid == visinfo->visualid) {
Colormap cmap = standardCmaps[i].colormap;
(void) XFree(standardCmaps);
return cmap;
}
}
(void) XFree(standardCmaps);
}
}
# endif
# endif
/*
* If we get here, give up and just allocate a new colormap.
*/
return XCreateColormap(dpy, root, visinfo->visual, AllocNone);
}
#elif defined(TOGL_WGL)
/* Code to create RGB palette is taken from the GENGL sample program of Win32
* SDK */
static unsigned char threeto8[8] = {
0, 0111 >> 1, 0222 >> 1, 0333 >> 1, 0444 >> 1, 0555 >> 1, 0666 >> 1, 0377
};
static unsigned char twoto8[4] = {
0, 0x55, 0xaa, 0xff
};
static unsigned char oneto8[2] = {
0, 255
};
static int defaultOverride[13] = {
0, 3, 24, 27, 64, 67, 88, 173, 181, 236, 247, 164, 91
};
static PALETTEENTRY defaultPalEntry[20] = {
{0, 0, 0, 0},
{0x80, 0, 0, 0},
{0, 0x80, 0, 0},
{0x80, 0x80, 0, 0},
{0, 0, 0x80, 0},
{0x80, 0, 0x80, 0},
{0, 0x80, 0x80, 0},
{0xC0, 0xC0, 0xC0, 0},
{192, 220, 192, 0},
{166, 202, 240, 0},
{255, 251, 240, 0},
{160, 160, 164, 0},
{0x80, 0x80, 0x80, 0},
{0xFF, 0, 0, 0},
{0, 0xFF, 0, 0},
{0xFF, 0xFF, 0, 0},
{0, 0, 0xFF, 0},
{0xFF, 0, 0xFF, 0},
{0, 0xFF, 0xFF, 0},
{0xFF, 0xFF, 0xFF, 0}
};
static unsigned char
ComponentFromIndex(int i, UINT nbits, UINT shift)
{
unsigned char val;
val = (unsigned char) (i >> shift);
switch (nbits) {
case 1:
val &= 0x1;
return oneto8[val];
case 2:
val &= 0x3;
return twoto8[val];
case 3:
val &= 0x7;
return threeto8[val];
default:
return 0;
}
}
static Colormap
Win32CreateRgbColormap(PIXELFORMATDESCRIPTOR pfd)
{
TkWinColormap *cmap = (TkWinColormap *) ckalloc(sizeof (TkWinColormap));
LOGPALETTE *pPal;
int n, i;
n = 1 << pfd.cColorBits;
pPal = (PLOGPALETTE) LocalAlloc(LMEM_FIXED, sizeof (LOGPALETTE)
+ n * sizeof (PALETTEENTRY));
pPal->palVersion = 0x300;
pPal->palNumEntries = n;
for (i = 0; i < n; i++) {
pPal->palPalEntry[i].peRed =
ComponentFromIndex(i, pfd.cRedBits, pfd.cRedShift);
pPal->palPalEntry[i].peGreen =
ComponentFromIndex(i, pfd.cGreenBits, pfd.cGreenShift);
pPal->palPalEntry[i].peBlue =
ComponentFromIndex(i, pfd.cBlueBits, pfd.cBlueShift);
pPal->palPalEntry[i].peFlags = 0;
}
/* fix up the palette to include the default GDI palette */
if ((pfd.cColorBits == 8)
&& (pfd.cRedBits == 3) && (pfd.cRedShift == 0)
&& (pfd.cGreenBits == 3) && (pfd.cGreenShift == 3)
&& (pfd.cBlueBits == 2) && (pfd.cBlueShift == 6)) {
for (i = 1; i <= 12; i++)
pPal->palPalEntry[defaultOverride[i]] = defaultPalEntry[i];
}
cmap->palette = CreatePalette(pPal);
LocalFree(pPal);
cmap->size = n;
cmap->stale = 0;
/* Since this is a private colormap of a fix size, we do not need a valid
* hash table, but a dummy one */
Tcl_InitHashTable(&cmap->refCounts, TCL_ONE_WORD_KEYS);
return (Colormap) cmap;
}
static Colormap
Win32CreateCiColormap(Togl *togl)
{
/* Create a colormap with size of togl->CiColormapSize and set all entries
* to black */
LOGPALETTE logPalette;
TkWinColormap *cmap = (TkWinColormap *) ckalloc(sizeof (TkWinColormap));
logPalette.palVersion = 0x300;
logPalette.palNumEntries = 1;
logPalette.palPalEntry[0].peRed = 0;
logPalette.palPalEntry[0].peGreen = 0;
logPalette.palPalEntry[0].peBlue = 0;
logPalette.palPalEntry[0].peFlags = 0;
cmap->palette = CreatePalette(&logPalette);
cmap->size = togl->CiColormapSize;
ResizePalette(cmap->palette, cmap->size); /* sets new entries to black */
cmap->stale = 0;
/* Since this is a private colormap of a fix size, we do not need a valid
* hash table, but a dummy one */
Tcl_InitHashTable(&cmap->refCounts, TCL_ONE_WORD_KEYS);
return (Colormap) cmap;
}
#endif /* TOGL_X11 */
/*
* Togl_Init
*
* Called upon system startup to create Togl command.
*/
int
Togl_Init(Tcl_Interp *interp)
{
int major, minor, patchLevel, releaseType;
#ifdef USE_TCL_STUBS
if (Tcl_InitStubs(interp, "8.1", 0) == NULL) {
return TCL_ERROR;
}
#endif
#ifdef USE_TK_STUBS
if (Tk_InitStubs(interp, TCL_STUPID "8.1", 0) == NULL) {
return TCL_ERROR;
}
#endif
/* Skip all this on Tcl/Tk 8.0 or older. Seems to work */
#if TCL_MAJOR_VERSION * 100 + TCL_MINOR_VERSION > 800
Tcl_GetVersion(&major, &minor, &patchLevel, &releaseType);
# ifdef HAVE_TK_SETCLASSPROCS
if (major > 8
|| (major == 8
&& (minor > 4
|| (minor == 4 && (releaseType > 0
|| patchLevel >= 2))))) {
# ifdef USE_TK_STUBS
SetClassProcsPtr = tkStubsPtr->tk_SetClassProcs;
# else
SetClassProcsPtr = Tk_SetClassProcs;
# endif
} else {
SetClassProcsPtr = NULL;
}
# else
if (major > 8
|| (major == 8
&& (minor > 4
|| (minor == 4 && (releaseType > 0
|| patchLevel >= 2))))) {
TCL_ERR(interp,
"Sorry, this instance of Togl was not compiled to work with Tcl/Tk 8.4a2 or higher.");
}
# endif
#endif
if (Tcl_PkgProvide(interp, "Togl", TOGL_VERSION) != TCL_OK) {
return TCL_ERROR;
}
if (Tcl_CreateCommand(interp, "togl", Togl_Cmd,
(ClientData) Tk_MainWindow(interp), NULL) == NULL)
return TCL_ERROR;
Tcl_InitHashTable(&CommandTable, TCL_STRING_KEYS);
return TCL_OK;
}
/*
* Register a C function to be called when an Togl widget is realized.
*/
void
Togl_CreateFunc(Togl_Callback *proc)
{
DefaultCreateProc = proc;
}
/*
* Register a C function to be called when an Togl widget must be redrawn.
*/
void
Togl_DisplayFunc(Togl_Callback *proc)
{
DefaultDisplayProc = proc;
}
/*
* Register a C function to be called when an Togl widget is resized.
*/
void
Togl_ReshapeFunc(Togl_Callback *proc)
{
DefaultReshapeProc = proc;
}
/*
* Register a C function to be called when an Togl widget is destroyed.
*/
void
Togl_DestroyFunc(Togl_Callback *proc)
{
DefaultDestroyProc = proc;
}
/*
* Register a C function to be called from TimerEventHandler.
*/
void
Togl_TimerFunc(Togl_Callback *proc)
{
DefaultTimerProc = proc;
}
/*
* Reset default callback pointers to NULL.
*/
void
Togl_ResetDefaultCallbacks(void)
{
DefaultCreateProc = NULL;
DefaultDisplayProc = NULL;
DefaultReshapeProc = NULL;
DefaultDestroyProc = NULL;
DefaultOverlayDisplayProc = NULL;
DefaultTimerProc = NULL;
DefaultClientData = NULL;
}
/*
* Chnage the create callback for a specific Togl widget.
*/
void
Togl_SetCreateFunc(Togl *togl, Togl_Callback *proc)
{
togl->CreateProc = proc;
}
/*
* Change the display/redraw callback for a specific Togl widget.
*/
void
Togl_SetDisplayFunc(Togl *togl, Togl_Callback *proc)
{
togl->DisplayProc = proc;
}
/*
* Change the reshape callback for a specific Togl widget.
*/
void
Togl_SetReshapeFunc(Togl *togl, Togl_Callback *proc)
{
togl->ReshapeProc = proc;
}
/*
* Change the destroy callback for a specific Togl widget.
*/
void
Togl_SetDestroyFunc(Togl *togl, Togl_Callback *proc)
{
togl->DestroyProc = proc;
}
/*
* Togl_Timer
*
* Gets called from Tk_CreateTimerHandler.
*/
static void
Togl_Timer(ClientData clientData)
{
Togl *togl = (Togl *) clientData;
if (togl->TimerProc) {
togl->TimerProc(togl);
/* Re-register this callback since Tcl/Tk timers are "one-shot". That
* is, after the timer callback is called it not normally called again.
* * * * * * * * * That's not the behavior we want for Togl. */
#if (TK_MAJOR_VERSION * 100 + TK_MINOR_VERSION) >= 401
togl->timerHandler =
Tcl_CreateTimerHandler(togl->TimerInterval, Togl_Timer,
(ClientData) togl);
#else
togl->timerHandler =
Tk_CreateTimerHandler(togl->TimeInterval, Togl_Timer,
(ClientData) togl);
#endif
}
}
/*
* Change the timer callback for a specific Togl widget.
* Pass NULL to disable the callback.
*/
void
Togl_SetTimerFunc(Togl *togl, Togl_Callback *proc)
{
togl->TimerProc = proc;
if (proc) {
#if (TK_MAJOR_VERSION * 100 + TK_MINOR_VERSION) >= 401
togl->timerHandler =
Tcl_CreateTimerHandler(togl->TimerInterval, Togl_Timer,
(ClientData) togl);
#else
togl->timerHandler =
Tk_CreateTimerHandler(togl->TimeInterval, Togl_Timer,
(ClientData) togl);
#endif
}
}
/*
* Togl_CreateCommand
*
* Declares a new C sub-command of Togl callable from Tcl.
* Every time the sub-command is called from Tcl, the
* C routine will be called with all the arguments from Tcl.
*/
void
Togl_CreateCommand(char *cmd_name, Togl_CmdProc *cmd_proc)
{
int new_item;
Tcl_HashEntry *entry;
entry = Tcl_CreateHashEntry(&CommandTable, cmd_name, &new_item);
Tcl_SetHashValue(entry, cmd_proc);
}
/*
* Togl_MakeCurrent
*
* Bind the OpenGL rendering context to the specified
* Togl widget.
*/
void
Togl_MakeCurrent(const Togl *togl)
{
#if defined(TOGL_WGL)
int res = wglMakeCurrent(togl->tglGLHdc, togl->tglGLHglrc);
assert(res == TRUE);
#elif defined(TOGL_X11)
if (!togl->GlCtx)
return;
(void) glXMakeCurrent(togl->display,
togl->TkWin ? Tk_WindowId(togl->TkWin) : None, togl->GlCtx);
# if defined(__sgi)
if (togl->OldStereoFlag)
oldStereoMakeCurrent(togl->display,
togl->TkWin ? Tk_WindowId(togl->TkWin) : None, togl->GlCtx);
# endif /*__sgi STEREO */
#elif defined(TOGL_AGL_CLASSIC) || defined(TOGL_AGL)
if (!togl->aglCtx)
return;
aglSetCurrentContext(togl->aglCtx);
#endif
}
#ifdef TOGL_AGL_CLASSIC
/* tell OpenGL which part of the Mac window to render to */
static void
SetMacBufRect(Togl *togl)
{
GLint wrect[4];
/* set wrect[0,1] to lower left corner of widget */
wrect[2] = ((TkWindow *) (togl->TkWin))->changes.width;
wrect[3] = ((TkWindow *) (togl->TkWin))->changes.height;
wrect[0] = ((TkWindow *) (togl->TkWin))->privatePtr->xOff;
wrect[1] =
((TkWindow *) (togl->TkWin))->privatePtr->toplevel->portPtr->
portRect.bottom - wrect[3] -
((TkWindow *) (togl->TkWin))->privatePtr->yOff;
aglSetInteger(togl->aglCtx, AGL_BUFFER_RECT, wrect);
aglEnable(togl->aglCtx, AGL_BUFFER_RECT);
aglUpdateContext(togl->aglCtx);
}
#elif defined(TOGL_AGL)
/* tell OpenGL which part of the Mac window to render to */
static void
SetMacBufRect(Togl *togl)
{
GLint wrect[4];
/* set wrect[0,1] to lower left corner of widget */
wrect[2] = Tk_Width(togl->TkWin);
wrect[3] = Tk_Height(togl->TkWin);
wrect[0] = ((TkWindow *) (togl->TkWin))->privatePtr->xOff;
Rect r;
GetPortBounds(((TkWindow *) (togl->TkWin))->privatePtr->toplevel->grafPtr,
&r);
wrect[1] = r.bottom -
wrect[3] - ((TkWindow *) (togl->TkWin))->privatePtr->yOff;
aglSetInteger(togl->aglCtx, AGL_BUFFER_RECT, wrect);
aglEnable(togl->aglCtx, AGL_BUFFER_RECT);
aglUpdateContext(togl->aglCtx);
}
#endif
/*
* Called when the widget's contents must be redrawn. Basically, we
* just call the user's render callback function.
*
* Note that the parameter type is ClientData so this function can be
* passed to Tk_DoWhenIdle().
*/
static void
Togl_Render(ClientData clientData)
{
Togl *togl = (Togl *) clientData;
if (togl->DisplayProc) {
#ifdef TOGL_AGL_CLASSIC
/* Mac is complicated here because OpenGL needs to know what part of
* the parent window to render into, and it seems that region need to
* be invalidated before drawing, so that QuickDraw will allow OpenGL
* to transfer pixels into that part of the window. I'm not even
* totally sure how or why this works as it does, since this aspect of
* Mac OpenGL seems to be totally undocumented. This was put together
* by trial and error! (thiessen) */
MacRegion r;
RgnPtr rp = &r;
GrafPtr curPort, parentWin;
parentWin = (GrafPtr)
(((MacDrawable *) (Tk_WindowId(togl->TkWin)))->toplevel->
portPtr);
if (!parentWin)
return;
#endif
Togl_MakeCurrent(togl);
#ifdef TOGL_AGL_CLASSIC
/* Set QuickDraw port and clipping region */
GetPort(&curPort);
SetPort(parentWin);
r.rgnBBox.left = ((TkWindow *) (togl->TkWin))->privatePtr->xOff;
r.rgnBBox.right =
r.rgnBBox.left + ((TkWindow *) (togl->TkWin))->changes.width -
1;
r.rgnBBox.top = ((TkWindow *) (togl->TkWin))->privatePtr->yOff;
r.rgnBBox.bottom =
r.rgnBBox.top + ((TkWindow *) (togl->TkWin))->changes.height -
1;
r.rgnSize = sizeof (Region);
InvalRgn(&rp);
SetClip(&rp);
/* this may seem an odd place to put this, with possibly redundant
* calls to aglSetInteger(AGL_BUFFER_RECT...), but for some reason
* performance is actually a lot better if this is called before every
* render... */
SetMacBufRect(togl);
#endif
#ifdef TOGL_AGL
SetMacBufRect(togl);
#endif
togl->DisplayProc(togl);
#ifdef TOGL_AGL_CLASSIC
SetPort(curPort); /* restore previous port */
#endif
}
#if defined(TOGL_AGL_CLASSIC) || defined(TOGL_AGL)
else {
/* Always need to update on resize */
SetMacBufRect(togl);
}
#endif
togl->UpdatePending = False;
}
static void
RenderOverlay(ClientData clientData)
{
Togl *togl = (Togl *) clientData;
if (togl->OverlayFlag && togl->OverlayDisplayProc) {
#if defined(TOGL_WGL)
int res = wglMakeCurrent(togl->tglGLHdc, togl->tglGLHglrc);
assert(res == TRUE);
#elif defined(TOGL_X11)
(void) glXMakeCurrent(Tk_Display(togl->TkWin),
togl->OverlayWindow, togl->OverlayCtx);
# if defined(__sgi)
if (togl->OldStereoFlag)
oldStereoMakeCurrent(Tk_Display(togl->TkWin),
togl->OverlayWindow, togl->OverlayCtx);
# endif /*__sgi STEREO */
#endif /* TOGL_WGL */
togl->OverlayDisplayProc(togl);
}
togl->OverlayUpdatePending = False;
}
/*
* It's possible to change with this function or in a script some
* options like RGBA - ColorIndex ; Z-buffer and so on
*/
int
Togl_Configure(Tcl_Interp *interp, Togl *togl,
int argc, const char *argv[], int flags)
{
Bool oldRgbaFlag = togl->RgbaFlag;
int oldRgbaRed = togl->RgbaRed;
int oldRgbaGreen = togl->RgbaGreen;
int oldRgbaBlue = togl->RgbaBlue;
Bool oldDoubleFlag = togl->DoubleFlag;
Bool oldDepthFlag = togl->DepthFlag;
int oldDepthSize = togl->DepthSize;
Bool oldAccumFlag = togl->AccumFlag;
int oldAccumRed = togl->AccumRed;
int oldAccumGreen = togl->AccumGreen;
int oldAccumBlue = togl->AccumBlue;
int oldAccumAlpha = togl->AccumAlpha;
Bool oldAlphaFlag = togl->AlphaFlag;
int oldAlphaSize = togl->AlphaSize;
Bool oldStencilFlag = togl->StencilFlag;
int oldStencilSize = togl->StencilSize;
int oldAuxNumber = togl->AuxNumber;
int oldWidth = togl->Width;
int oldHeight = togl->Height;
int oldSetGrid = togl->SetGrid;
if (Tk_ConfigureWidget(interp, togl->TkWin, configSpecs,
argc, argv, WIDGREC togl, flags) == TCL_ERROR) {
return (TCL_ERROR);
}
#ifndef USE_OVERLAY
if (togl->OverlayFlag) {
TCL_ERR(interp, "Sorry, overlay was disabled");
}
#endif
if (togl->Width != oldWidth || togl->Height != oldHeight
|| togl->SetGrid != oldSetGrid) {
Togl_WorldChanged((ClientData) togl);
/* this added per Lou Arata <arata@enya.picker.com> */
Tk_ResizeWindow(togl->TkWin, togl->Width, togl->Height);
if (togl->ReshapeProc &&
#if defined(TOGL_WGL)
togl->tglGLHglrc
#elif defined(TOGL_X11)
togl->GlCtx
#elif defined(TOGL_AGL_CLASSIC) || defined(TOGL_AGL)
togl->aglCtx
#endif
) {
Togl_MakeCurrent(togl);
togl->ReshapeProc(togl);
}
}
if (togl->RgbaFlag != oldRgbaFlag
|| togl->RgbaRed != oldRgbaRed
|| togl->RgbaGreen != oldRgbaGreen
|| togl->RgbaBlue != oldRgbaBlue
|| togl->DoubleFlag != oldDoubleFlag
|| togl->DepthFlag != oldDepthFlag
|| togl->DepthSize != oldDepthSize
|| togl->AccumFlag != oldAccumFlag
|| togl->AccumRed != oldAccumRed
|| togl->AccumGreen != oldAccumGreen
|| togl->AccumBlue != oldAccumBlue
|| togl->AccumAlpha != oldAccumAlpha
|| togl->AlphaFlag != oldAlphaFlag
|| togl->AlphaSize != oldAlphaSize
|| togl->StencilFlag != oldStencilFlag
|| togl->StencilSize != oldStencilSize
|| togl->AuxNumber != oldAuxNumber) {
#ifdef MESA_COLOR_HACK
free_default_color_cells(Tk_Display(togl->TkWin),
Tk_Colormap(togl->TkWin));
#endif
}
#if defined(__sgi)
oldStereoInit(togl, togl->OldStereoFlag);
#endif
return TCL_OK;
}
static int
Togl_Widget(ClientData clientData, Tcl_Interp *interp, int argc,
CONST84 char *argv[])
{
Togl *togl = (Togl *) clientData;
int result = TCL_OK;
Tcl_HashEntry *entry;
Tcl_HashSearch search;
Togl_CmdProc *cmd_proc;
if (argc < 2) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " ?options?\"", NULL);
return TCL_ERROR;
}
Tk_Preserve((ClientData) togl);
if (!strncmp(argv[1], "configure", MAX(1, strlen(argv[1])))) {
if (argc == 2) {
/* Return list of all configuration parameters */
result = Tk_ConfigureInfo(interp, togl->TkWin, configSpecs,
WIDGREC togl, (char *) NULL, 0);
} else if (argc == 3) {
if (strcmp(argv[2], "-extensions") == 0) {
/* Return a list of OpenGL extensions available */
const char *extensions;
extensions = (const char *) glGetString(GL_EXTENSIONS);
Tcl_SetResult(interp, TCL_STUPID extensions, TCL_STATIC);
result = TCL_OK;
} else {
/* Return a specific configuration parameter */
result = Tk_ConfigureInfo(interp, togl->TkWin, configSpecs,
WIDGREC togl, argv[2], 0);
}
} else {
/* Execute a configuration change */
result = Togl_Configure(interp, togl, argc - 2, argv + 2,
TK_CONFIG_ARGV_ONLY);
}
} else if (!strncmp(argv[1], "render", MAX(1, strlen(argv[1])))) {
/* force the widget to be redrawn */
Togl_Render((ClientData) togl);
} else if (!strncmp(argv[1], "swapbuffers", MAX(1, strlen(argv[1])))) {
/* force the widget to be redrawn */
Togl_SwapBuffers(togl);
} else if (!strncmp(argv[1], "makecurrent", MAX(1, strlen(argv[1])))) {
/* force the widget to be redrawn */
Togl_MakeCurrent(togl);
}
#if TOGL_USE_FONTS == 1
else if (!strncmp(argv[1], "loadbitmapfont", MAX(1, strlen(argv[1])))) {
if (argc == 3) {
GLuint fontbase;
Tcl_Obj *fontbaseAsTclObject;
fontbase = Togl_LoadBitmapFont(togl, argv[2]);
if (fontbase) {
fontbaseAsTclObject = Tcl_NewIntObj(fontbase);
Tcl_SetObjResult(interp, fontbaseAsTclObject);
result = TCL_OK;
} else {
Tcl_AppendResult(interp, "Could not allocate font", NULL);
result = TCL_ERROR;
}
} else {
Tcl_AppendResult(interp, "wrong # args", NULL);
result = TCL_ERROR;
}
} else if (!strncmp(argv[1], "unloadbitmapfont", MAX(1, strlen(argv[1])))) {
if (argc == 3) {
Togl_UnloadBitmapFont(togl, atoi(argv[2]));
result = TCL_OK;
} else {
Tcl_AppendResult(interp, "wrong # args", NULL);
result = TCL_ERROR;
}
}
#endif /* TOGL_USE_FONTS */
else {
/* Probably a user-defined function */
entry = Tcl_FindHashEntry(&CommandTable, argv[1]);
if (entry != NULL) {
cmd_proc = (Togl_CmdProc *) Tcl_GetHashValue(entry);
result = cmd_proc(togl, argc, argv);
} else {
Tcl_AppendResult(interp, "Togl: Unknown option: ", argv[1], "\n",
"Try: configure or render\n",
"or one of the user-defined commands:\n", NULL);
entry = Tcl_FirstHashEntry(&CommandTable, &search);
while (entry) {
Tcl_AppendResult(interp, " ",
Tcl_GetHashKey(&CommandTable, entry), "\n", NULL);
entry = Tcl_NextHashEntry(&search);
}
result = TCL_ERROR;
}
}
Tk_Release((ClientData) togl);
return result;
}
/*
* Togl_Cmd
*
* Called when Togl is executed - creation of a Togl widget.
* * Creates a new window
* * Creates an 'Togl' data structure
* * Creates an event handler for this window
* * Creates a command that handles this object
* * Configures this Togl for the given arguments
*/
static int
Togl_Cmd(ClientData clientData, Tcl_Interp *interp, int argc,
CONST84 char **argv)
{
const char *name;
Tk_Window mainwin = (Tk_Window) clientData;
Tk_Window tkwin;
Togl *togl;
if (argc <= 1) {
TCL_ERR(interp, "wrong # args: should be \"pathName read filename\"");
}
/* Create the window. */
name = argv[1];
tkwin = Tk_CreateWindowFromPath(interp, mainwin, name, (char *) NULL);
if (tkwin == NULL) {
return TCL_ERROR;
}
Tk_SetClass(tkwin, "Togl");
/* Create Togl data structure */
togl = (Togl *) malloc(sizeof (Togl));
if (!togl) {
return TCL_ERROR;
}
togl->Next = NULL;
#if defined(TOGL_WGL)
togl->tglGLHdc = NULL;
togl->tglGLHglrc = NULL;
#elif defined(TOGL_X11)
togl->GlCtx = NULL;
togl->OverlayCtx = NULL;
#elif defined(TOGL_AGL_CLASSIC) || defined(TOGL_AGL)
togl->aglCtx = NULL;
#endif /* TOGL_WGL */
togl->display = Tk_Display(tkwin);
togl->TkWin = tkwin;
togl->Interp = interp;
#ifndef NO_TK_CURSOR
togl->Cursor = None;
#endif
togl->Width = 0;
togl->Height = 0;
togl->SetGrid = 0;
togl->TimerInterval = 0;
togl->RgbaFlag = True;
togl->RgbaRed = 1;
togl->RgbaGreen = 1;
togl->RgbaBlue = 1;
togl->DoubleFlag = False;
togl->DepthFlag = False;
togl->DepthSize = 1;
togl->AccumFlag = False;
togl->AccumRed = 1;
togl->AccumGreen = 1;
togl->AccumBlue = 1;
togl->AccumAlpha = 1;
togl->AlphaFlag = False;
togl->AlphaSize = 1;
togl->StencilFlag = False;
togl->StencilSize = 1;
togl->OverlayFlag = False;
togl->StereoFlag = False;
#ifdef __sgi
togl->OldStereoFlag = False;
#endif
togl->AuxNumber = 0;
togl->Indirect = False;
togl->PixelFormat = 0;
togl->UpdatePending = False;
togl->OverlayUpdatePending = False;
togl->CreateProc = DefaultCreateProc;
togl->DisplayProc = DefaultDisplayProc;
togl->ReshapeProc = DefaultReshapeProc;
togl->DestroyProc = DefaultDestroyProc;
togl->TimerProc = DefaultTimerProc;
togl->OverlayDisplayProc = DefaultOverlayDisplayProc;
togl->ShareList = NULL;
togl->ShareContext = NULL;
togl->Ident = NULL;
togl->Client_Data = DefaultClientData;
/* for EPS Output */
togl->EpsRedMap = togl->EpsGreenMap = togl->EpsBlueMap = NULL;
togl->EpsMapSize = 0;
/* Create command event handler */
togl->widgetCmd = Tcl_CreateCommand(interp, Tk_PathName(tkwin),
Togl_Widget, (ClientData) togl,
(Tcl_CmdDeleteProc *) ToglCmdDeletedProc);
/*
* Setup the Tk_ClassProcs callbacks to point at our own window creation
* function
*
* We need to check at runtime if we should use the new Tk_SetClassProcs()
* API or if we need to modify the window structure directly */
#ifdef HAVE_TK_SETCLASSPROCS
if (SetClassProcsPtr != NULL) { /* use public API (Tk 8.4+) */
Tk_ClassProcs *procsPtr;
procsPtr = (Tk_ClassProcs *) Tcl_Alloc(sizeof (Tk_ClassProcs));
procsPtr->size = sizeof (Tk_ClassProcs);
procsPtr->createProc = Togl_CreateWindow;
procsPtr->worldChangedProc = Togl_WorldChanged;
procsPtr->modalProc = NULL;
/* Tk_SetClassProcs(togl->TkWin,procsPtr,(ClientData)togl); */
(SetClassProcsPtr) (togl->TkWin, procsPtr, (ClientData) togl);
} else
#endif
{ /* use private API */
/*
* We need to set these fields in the Tk_FakeWin structure: dummy17 =
* classProcsPtr dummy18 = instanceData */
TkClassProcs *procsPtr;
Tk_FakeWin *winPtr = (Tk_FakeWin *) (togl->TkWin);
procsPtr = (TkClassProcs *) Tcl_Alloc(sizeof (TkClassProcs));
procsPtr->createProc = Togl_CreateWindow;
procsPtr->geometryProc = Togl_WorldChanged;
procsPtr->modalProc = NULL;
winPtr->dummy17 = (char *) procsPtr;
winPtr->dummy18 = (ClientData) togl;
}
Tk_CreateEventHandler(tkwin,
ExposureMask | StructureNotifyMask, Togl_EventProc,
(ClientData) togl);
/* Configure Togl widget */
if (Togl_Configure(interp, togl, argc - 2, argv + 2, 0) == TCL_ERROR) {
Tk_DestroyWindow(tkwin);
Tcl_AppendResult(interp, "Couldn't configure togl widget\n", NULL);
goto error;
}
/*
* If OpenGL window wasn't already created by Togl_Configure() we
* create it now. We can tell by checking if the GLX context has
* been initialized.
*/
if (!
#if defined(TOGL_WGL)
togl->tglGLHdc
#elif defined(TOGL_X11)
togl->GlCtx
#elif defined(TOGL_AGL_CLASSIC) || defined(TOGL_AGL)
togl->aglCtx
#endif
) {
Tk_MakeWindowExist(togl->TkWin);
if (Tk_WindowId(togl->TkWin) == DUMMY_WINDOW) {
return TCL_ERROR;
}
Togl_MakeCurrent(togl);
}
/* If defined, call create callback */
if (togl->CreateProc) {
togl->CreateProc(togl);
}
/* If defined, call reshape proc */
if (togl->ReshapeProc) {
togl->ReshapeProc(togl);
}
/* If defined, setup timer */
if (togl->TimerProc) {
(void) Tk_CreateTimerHandler(togl->TimerInterval, Togl_Timer,
(ClientData) togl);
}
Tcl_AppendResult(interp, Tk_PathName(tkwin), NULL);
/* Add to linked list */
AddToList(togl);
return TCL_OK;
error:
(void) Tcl_DeleteCommand(interp, "togl");
/* free(togl); Don't free it, if we do a crash occurs later... */
return TCL_ERROR;
}
#ifdef USE_OVERLAY
/*
* Do all the setup for overlay planes
* Return: TCL_OK or TCL_ERROR
*/
static int
SetupOverlay(Togl *togl)
{
# if defined(TOGL_X11)
# ifdef GLX_TRANSPARENT_TYPE_EXT
static int ovAttributeList[] = {
GLX_BUFFER_SIZE, 2,
GLX_LEVEL, 1,
GLX_TRANSPARENT_TYPE_EXT, GLX_TRANSPARENT_INDEX_EXT,
None
};
# else
static int ovAttributeList[] = {
GLX_BUFFER_SIZE, 2,
GLX_LEVEL, 1,
None
};
# endif
Display *dpy;
XVisualInfo *visinfo;
TkWindow *winPtr = (TkWindow *) togl->TkWin;
XSetWindowAttributes swa;
Tcl_HashEntry *hPtr;
int new_flag;
dpy = Tk_Display(togl->TkWin);
visinfo = glXChooseVisual(dpy, Tk_ScreenNumber(winPtr), ovAttributeList);
if (!visinfo) {
Tcl_AppendResult(togl->Interp, Tk_PathName(winPtr),
": No suitable overlay index visual available", (char *) NULL);
togl->OverlayCtx = 0;
togl->OverlayWindow = 0;
togl->OverlayCmap = 0;
return TCL_ERROR;
}
# ifdef GLX_TRANSPARENT_INDEX_EXT
{
int fail =
glXGetConfig(dpy, visinfo, GLX_TRANSPARENT_INDEX_VALUE_EXT,
&togl->OverlayTransparentPixel);
if (fail)
togl->OverlayTransparentPixel = 0; /* maybe, maybe ... */
}
# else
togl->OverlayTransparentPixel = 0; /* maybe, maybe ... */
# endif
/* share display lists with normal layer context */
togl->OverlayCtx =
glXCreateContext(dpy, visinfo, togl->GlCtx, !togl->Indirect);
swa.colormap = XCreateColormap(dpy, XRootWindow(dpy, visinfo->screen),
visinfo->visual, AllocNone);
togl->OverlayCmap = swa.colormap;
swa.border_pixel = 0;
swa.event_mask = ALL_EVENTS_MASK;
togl->OverlayWindow = XCreateWindow(dpy, Tk_WindowId(togl->TkWin), 0, 0,
togl->Width, togl->Height, 0,
visinfo->depth, InputOutput,
visinfo->visual, CWBorderPixel | CWColormap | CWEventMask, &swa);
hPtr = Tcl_CreateHashEntry(&winPtr->dispPtr->winTable,
(char *) togl->OverlayWindow, &new_flag);
Tcl_SetHashValue(hPtr, winPtr);
/* XMapWindow( dpy, togl->OverlayWindow ); */
togl->OverlayIsMapped = False;
/* Make sure window manager installs our colormap */
XSetWMColormapWindows(dpy, togl->OverlayWindow, &togl->OverlayWindow, 1);
return TCL_OK;
# elif defined(TOGL_WGL) || defined(TOGL_AGL_CLASSIC) || defined(TOGL_AGL)
/* not yet implemented on these */
return TCL_ERROR;
# endif
}
#endif /* USE_OVERLAY */
#ifdef TOGL_WGL
# define TOGL_CLASS_NAME "Togl Class"
static Bool ToglClassInitialized = False;
static LRESULT CALLBACK
Win32WinProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
LONG result;
Togl *togl = (Togl *) GetWindowLong(hwnd, 0);
WNDCLASS childClass;
switch (message) {
case WM_WINDOWPOSCHANGED:
/* Should be processed by DefWindowProc, otherwise a double buffered
* context is not properly resized when the corresponding window is
* resized. */
break;
case WM_DESTROY:
if (togl->tglGLHglrc) {
wglDeleteContext(togl->tglGLHglrc);
}
if (togl->tglGLHdc) {
ReleaseDC(hwnd, togl->tglGLHdc);
}
free(togl);
break;
default:
# if USE_STATIC_LIB
return TkWinChildProc(hwnd, message, wParam, lParam);
# else
/*
* OK, since TkWinChildProc is not explicitly exported in the
* dynamic libraries, we have to retrieve it from the class info
* registered with windows.
*
*/
if (tkWinChildProc == NULL) {
GetClassInfo(Tk_GetHINSTANCE(), TK_WIN_CHILD_CLASS_NAME,
&childClass);
tkWinChildProc = childClass.lpfnWndProc;
}
return tkWinChildProc(hwnd, message, wParam, lParam);
# endif
}
result = DefWindowProc(hwnd, message, wParam, lParam);
Tcl_ServiceAll();
return result;
}
#endif /* TOGL_WGL */
/*
* Togl_CreateWindow
*
* Window creation function, invoked as a callback from Tk_MakeWindowExist.
* Creates an OpenGL window for the Togl widget.
*/
static Window
Togl_CreateWindow(Tk_Window tkwin, Window parent, ClientData instanceData)
{
Togl *togl = (Togl *) instanceData;
XVisualInfo *visinfo = NULL;
Display *dpy;
Colormap cmap;
int scrnum;
Window window;
#if defined(TOGL_X11)
Bool directCtx = True;
int attrib_list[1000];
int attrib_count;
int dummy;
XSetWindowAttributes swa;
# define MAX_ATTEMPTS 12
static int ci_depths[MAX_ATTEMPTS] = {
8, 4, 2, 1, 12, 16, 8, 4, 2, 1, 12, 16
};
static int dbl_flags[MAX_ATTEMPTS] = {
0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1
};
#elif defined(TOGL_WGL)
HWND hwnd, parentWin;
int pixelformat;
HANDLE hInstance;
WNDCLASS ToglClass;
PIXELFORMATDESCRIPTOR pfd;
XVisualInfo VisInf;
#elif defined(TOGL_AGL_CLASSIC) || defined(TOGL_AGL)
GLint attribs[20];
int na;
AGLPixelFormat fmt;
XVisualInfo VisInf;
#endif /* TOGL_X11 */
dpy = Tk_Display(togl->TkWin);
#if defined(TOGL_X11)
/* Make sure OpenGL's GLX extension supported */
if (!glXQueryExtension(dpy, &dummy, &dummy)) {
Tcl_SetResult(togl->Interp,
TCL_STUPID "Togl: X server has no OpenGL GLX extension",
TCL_STATIC);
return DUMMY_WINDOW;
}
if (togl->ShareContext && FindTogl(togl->ShareContext)) {
/* share OpenGL context with existing Togl widget */
Togl *shareWith = FindTogl(togl->ShareContext);
assert(shareWith != NULL);
assert(shareWith->GlCtx != NULL);
togl->GlCtx = shareWith->GlCtx;
togl->VisInfo = shareWith->VisInfo;
visinfo = togl->VisInfo;
} else {
if (togl->PixelFormat) {
XVisualInfo template;
int count = 1;
template.visualid = togl->PixelFormat;
visinfo = XGetVisualInfo(dpy, VisualIDMask, &template, &count);
if (visinfo == NULL) {
Tcl_SetResult(togl->Interp,
TCL_STUPID "Togl: couldn't choose pixel format",
TCL_STATIC);
return DUMMY_WINDOW;
}
/* fill in flags normally passed in that affect behavior */
(void) glXGetConfig(dpy, visinfo, GLX_RGBA, &togl->RgbaFlag);
(void) glXGetConfig(dpy, visinfo, GLX_DOUBLEBUFFER,
&togl->DoubleFlag);
(void) glXGetConfig(dpy, visinfo, GLX_STEREO, &togl->StereoFlag);
} else {
int attempt;
/* It may take a few tries to get a visual */
for (attempt = 0; attempt < MAX_ATTEMPTS; attempt++) {
attrib_count = 0;
attrib_list[attrib_count++] = GLX_USE_GL;
if (togl->RgbaFlag) {
/* RGB[A] mode */
attrib_list[attrib_count++] = GLX_RGBA;
attrib_list[attrib_count++] = GLX_RED_SIZE;
attrib_list[attrib_count++] = togl->RgbaRed;
attrib_list[attrib_count++] = GLX_GREEN_SIZE;
attrib_list[attrib_count++] = togl->RgbaGreen;
attrib_list[attrib_count++] = GLX_BLUE_SIZE;
attrib_list[attrib_count++] = togl->RgbaBlue;
if (togl->AlphaFlag) {
attrib_list[attrib_count++] = GLX_ALPHA_SIZE;
attrib_list[attrib_count++] = togl->AlphaSize;
}
/* for EPS Output */
if (togl->EpsRedMap)
free(togl->EpsRedMap);
if (togl->EpsGreenMap)
free(togl->EpsGreenMap);
if (togl->EpsBlueMap)
free(togl->EpsBlueMap);
togl->EpsRedMap = togl->EpsGreenMap = togl->EpsBlueMap =
NULL;
togl->EpsMapSize = 0;
} else {
/* Color index mode */
int depth;
attrib_list[attrib_count++] = GLX_BUFFER_SIZE;
depth = ci_depths[attempt];
attrib_list[attrib_count++] = depth;
}
if (togl->DepthFlag) {
attrib_list[attrib_count++] = GLX_DEPTH_SIZE;
attrib_list[attrib_count++] = togl->DepthSize;
}
if (togl->DoubleFlag || dbl_flags[attempt]) {
attrib_list[attrib_count++] = GLX_DOUBLEBUFFER;
}
if (togl->StencilFlag) {
attrib_list[attrib_count++] = GLX_STENCIL_SIZE;
attrib_list[attrib_count++] = togl->StencilSize;
}
if (togl->AccumFlag) {
attrib_list[attrib_count++] = GLX_ACCUM_RED_SIZE;
attrib_list[attrib_count++] = togl->AccumRed;
attrib_list[attrib_count++] = GLX_ACCUM_GREEN_SIZE;
attrib_list[attrib_count++] = togl->AccumGreen;
attrib_list[attrib_count++] = GLX_ACCUM_BLUE_SIZE;
attrib_list[attrib_count++] = togl->AccumBlue;
if (togl->AlphaFlag) {
attrib_list[attrib_count++] = GLX_ACCUM_ALPHA_SIZE;
attrib_list[attrib_count++] = togl->AccumAlpha;
}
}
if (togl->AuxNumber != 0) {
attrib_list[attrib_count++] = GLX_AUX_BUFFERS;
attrib_list[attrib_count++] = togl->AuxNumber;
}
if (togl->Indirect) {
directCtx = False;
}
if (togl->StereoFlag) {
attrib_list[attrib_count++] = GLX_STEREO;
}
attrib_list[attrib_count++] = None;
visinfo = glXChooseVisual(dpy, Tk_ScreenNumber(togl->TkWin),
attrib_list);
if (visinfo) {
/* found a GLX visual! */
break;
}
}
togl->VisInfo = visinfo;
if (visinfo == NULL) {
Tcl_SetResult(togl->Interp,
TCL_STUPID "Togl: couldn't get visual", TCL_STATIC);
return DUMMY_WINDOW;
}
/*
* Create a new OpenGL rendering context.
*/
if (togl->ShareList) {
/* share display lists with existing togl widget */
Togl *shareWith = FindTogl(togl->ShareList);
GLXContext shareCtx;
if (shareWith)
shareCtx = shareWith->GlCtx;
else
shareCtx = None;
togl->GlCtx =
glXCreateContext(dpy, visinfo, shareCtx, directCtx);
} else {
/* don't share display lists */
togl->GlCtx = glXCreateContext(dpy, visinfo, None, directCtx);
}
if (togl->GlCtx == NULL) {
Tcl_SetResult(togl->Interp,
TCL_STUPID "could not create rendering context",
TCL_STATIC);
return DUMMY_WINDOW;
}
}
}
#endif /* TOGL_X11 */
#ifdef TOGL_WGL
parentWin = Tk_GetHWND(parent);
hInstance = Tk_GetHINSTANCE();
if (!ToglClassInitialized) {
ToglClassInitialized = True;
ToglClass.style = CS_HREDRAW | CS_VREDRAW;
ToglClass.cbClsExtra = 0;
ToglClass.cbWndExtra = 4; /* to save struct Togl* */
ToglClass.hInstance = hInstance;
ToglClass.hbrBackground = NULL;
ToglClass.lpszMenuName = NULL;
ToglClass.lpszClassName = TOGL_CLASS_NAME;
ToglClass.lpfnWndProc = Win32WinProc;
ToglClass.hIcon = NULL;
ToglClass.hCursor = NULL;
if (!RegisterClass(&ToglClass)) {
Tcl_SetResult(togl->Interp,
TCL_STUPID "unable register Togl window class", TCL_STATIC);
return DUMMY_WINDOW;
}
}
hwnd = CreateWindow(TOGL_CLASS_NAME, NULL,
WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS, 0, 0,
togl->Width, togl->Height, parentWin, NULL, hInstance, NULL);
SetWindowLong(hwnd, 0, (LONG) togl);
SetWindowPos(hwnd, HWND_TOP, 0, 0, 0, 0,
SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
togl->tglGLHdc = GetDC(hwnd);
pfd.nSize = sizeof (PIXELFORMATDESCRIPTOR);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL;
if (togl->DoubleFlag) {
pfd.dwFlags |= PFD_DOUBLEBUFFER;
}
/* The stereo flag is not supported in the current generic OpenGL
* implementation, but may be supported by specific hardware devices. */
if (togl->StereoFlag) {
pfd.dwFlags |= PFD_STEREO;
}
if (togl->PixelFormat) {
pixelformat = togl->PixelFormat;
} else {
pfd.cColorBits = togl->RgbaRed + togl->RgbaGreen + togl->RgbaBlue;
pfd.iPixelType = togl->RgbaFlag ? PFD_TYPE_RGBA : PFD_TYPE_COLORINDEX;
/* Alpha bitplanes are not supported in the current generic OpenGL
* implementation, but may be supported by specific hardware devices. */
pfd.cAlphaBits = togl->AlphaFlag ? togl->AlphaSize : 0;
pfd.cAccumBits = togl->AccumFlag ? (togl->AccumRed + togl->AccumGreen +
togl->AccumBlue + togl->AccumAlpha) : 0;
pfd.cDepthBits = togl->DepthFlag ? togl->DepthSize : 0;
pfd.cStencilBits = togl->StencilFlag ? togl->StencilSize : 0;
/* Auxiliary buffers are not supported in the current generic OpenGL
* implementation, but may be supported by specific hardware devices. */
pfd.cAuxBuffers = togl->AuxNumber;
pfd.iLayerType = PFD_MAIN_PLANE;
if ((pixelformat = ChoosePixelFormat(togl->tglGLHdc, &pfd)) == 0) {
Tcl_SetResult(togl->Interp,
TCL_STUPID "Togl: couldn't choose pixel format",
TCL_STATIC);
return DUMMY_WINDOW;
}
}
if (SetPixelFormat(togl->tglGLHdc, pixelformat, &pfd) == FALSE) {
Tcl_SetResult(togl->Interp,
TCL_STUPID "Togl: couldn't choose pixel format", TCL_STATIC);
return DUMMY_WINDOW;
}
/* Get the actual pixel format */
DescribePixelFormat(togl->tglGLHdc, pixelformat, sizeof (pfd), &pfd);
if (togl->PixelFormat) {
/* fill in flags normally passed in that affect behavior */
togl->RgbaFlag = pfd.iPixelType == PFD_TYPE_RGBA;
togl->DoubleFlag = pfd.cDepthBits > 0;
togl->StereoFlag = (pfd.dwFlags & PFD_STEREO) != 0;
// TODO: set depth flag, and more
} else if (togl->StereoFlag && (pfd.dwFlags & PFD_STEREO) == 0) {
Tcl_SetResult(togl->Interp,
TCL_STUPID "Togl: couldn't choose stereo pixel format",
TCL_STATIC);
return DUMMY_WINDOW;
}
if (togl->ShareContext && FindTogl(togl->ShareContext)) {
/* share OpenGL context with existing Togl widget */
Togl *shareWith = FindTogl(togl->ShareContext);
assert(shareWith);
assert(shareWith->tglGLHglrc);
togl->tglGLHglrc = shareWith->tglGLHglrc;
togl->VisInfo = shareWith->VisInfo;
visinfo = togl->VisInfo;
} else {
/*
* Create a new OpenGL rendering context. And check to share lists.
*/
togl->tglGLHglrc = wglCreateContext(togl->tglGLHdc);
if (togl->ShareList) {
/* share display lists with existing togl widget */
Togl *shareWith = FindTogl(togl->ShareList);
if (shareWith)
wglShareLists(shareWith->tglGLHglrc, togl->tglGLHglrc);
}
if (!togl->tglGLHglrc) {
Tcl_SetResult(togl->Interp,
TCL_STUPID "could not create rendering context",
TCL_STATIC);
return DUMMY_WINDOW;
}
/* Just for portability, define the simplest visinfo */
visinfo = &VisInf;
visinfo->visual = DefaultVisual(dpy, DefaultScreen(dpy));
visinfo->depth = visinfo->visual->bits_per_rgb;
togl->VisInfo = visinfo;
}
#endif /* TOGL_WGL */
/*
* find a colormap
*/
scrnum = Tk_ScreenNumber(togl->TkWin);
if (togl->RgbaFlag) {
/* Colormap for RGB mode */
#if defined(TOGL_X11)
cmap = get_rgb_colormap(dpy, scrnum, visinfo, togl->TkWin);
#elif defined(TOGL_WGL)
if (pfd.dwFlags & PFD_NEED_PALETTE) {
cmap = Win32CreateRgbColormap(pfd);
} else {
cmap = DefaultColormap(dpy, scrnum);
}
/* for EPS Output */
if (togl->EpsRedMap)
free(togl->EpsRedMap);
if (togl->EpsGreenMap)
free(togl->EpsGreenMap);
if (togl->EpsBlueMap)
free(togl->EpsBlueMap);
togl->EpsRedMap = togl->EpsGreenMap = togl->EpsBlueMap = NULL;
togl->EpsMapSize = 0;
#elif defined(TOGL_AGL_CLASSIC) || defined(TOGL_AGL)
cmap = DefaultColormap(dpy, scrnum);
/* for EPS Output */
if (togl->EpsRedMap)
free(togl->EpsRedMap);
if (togl->EpsGreenMap)
free(togl->EpsGreenMap);
if (togl->EpsBlueMap)
free(togl->EpsBlueMap);
togl->EpsRedMap = togl->EpsGreenMap = togl->EpsBlueMap = NULL;
togl->EpsMapSize = 0;
#endif /* TOGL_X11 */
} else {
/* Colormap for CI mode */
#ifdef TOGL_WGL
togl->CiColormapSize = 1 << pfd.cColorBits;
togl->CiColormapSize = togl->CiColormapSize < MAX_CI_COLORMAP_SIZE ?
togl->CiColormapSize : MAX_CI_COLORMAP_SIZE;
#endif /* TOGL_WGL */
if (togl->PrivateCmapFlag) {
/* need read/write colormap so user can store own color entries */
#if defined(TOGL_X11)
cmap = XCreateColormap(dpy, XRootWindow(dpy, visinfo->screen),
visinfo->visual, AllocAll);
#elif defined(TOGL_WGL)
cmap = Win32CreateCiColormap(togl);
#elif defined(TOGL_AGL_CLASSIC) || defined(TOGL_AGL)
/* need to figure out how to do this correctly on Mac... */
cmap = DefaultColormap(dpy, scrnum);
#endif /* TOGL_X11 */
} else {
if (visinfo->visual == DefaultVisual(dpy, scrnum)) {
/* share default/root colormap */
cmap = Tk_Colormap(togl->TkWin);
} else {
/* make a new read-only colormap */
cmap = XCreateColormap(dpy, XRootWindow(dpy, visinfo->screen),
visinfo->visual, AllocNone);
}
}
}
#if !defined(TOGL_AGL)
/* Make sure Tk knows to switch to the new colormap when the cursor is over
* this window when running in color index mode. */
(void) Tk_SetWindowVisual(togl->TkWin, visinfo->visual, visinfo->depth,
cmap);
#endif
#ifdef TOGL_WGL
/* Install the colormap */
SelectPalette(togl->tglGLHdc, ((TkWinColormap *) cmap)->palette, TRUE);
RealizePalette(togl->tglGLHdc);
#endif /* TOGL_WGL */
#if defined(TOGL_X11)
swa.colormap = cmap;
swa.border_pixel = 0;
swa.event_mask = ALL_EVENTS_MASK;
window = XCreateWindow(dpy, parent,
0, 0, togl->Width, togl->Height,
0, visinfo->depth,
InputOutput, visinfo->visual,
CWBorderPixel | CWColormap | CWEventMask, &swa);
/* Make sure window manager installs our colormap */
(void) XSetWMColormapWindows(dpy, window, &window, 1);
#elif defined(TOGL_WGL)
window = Tk_AttachHWND(togl->TkWin, hwnd);
#elif defined(TOGL_AGL_CLASSIC) || defined(TOGL_AGL)
{
TkWindow *winPtr = (TkWindow *) togl->TkWin;
window = TkpMakeWindow(winPtr, parent);
}
#endif /* TOGL_X11 */
#ifdef USE_OVERLAY
if (togl->OverlayFlag) {
if (SetupOverlay(togl) == TCL_ERROR) {
fprintf(stderr, "Warning: couldn't setup overlay.\n");
togl->OverlayFlag = False;
}
}
#endif /* USE_OVERLAY */
/* Request the X window to be displayed */
(void) XMapWindow(dpy, window);
#if defined(TOGL_AGL_CLASSIC) || defined(TOGL_AGL)
if (togl->ShareContext && FindTogl(togl->ShareContext)) {
/* share OpenGL context with existing Togl widget */
Togl *shareWith = FindTogl(togl->ShareContext);
assert(shareWith);
assert(shareWith->aglCtx);
togl->aglCtx = shareWith->aglCtx;
togl->VisInfo = shareWith->VisInfo;
visinfo = togl->VisInfo;
} else {
AGLContext shareCtx = NULL;
if (togl->PixelFormat) {
/* fill in RgbaFlag, DoubleFlag, and StereoFlag */
fmt = (AGLPixelFormat) togl->PixelFormat;
GLint has_rgba, has_doublebuf, has_stereo;
if (aglDescribePixelFormat(fmt, AGL_RGBA, &has_rgba) &&
aglDescribePixelFormat(fmt, AGL_DOUBLEBUFFER,
&has_doublebuf)
&& aglDescribePixelFormat(fmt, AGL_STEREO, &has_stereo)) {
togl->RgbaFlag = (has_rgba ? True : False);
togl->DoubleFlag = (has_doublebuf ? True : False);
togl->StereoFlag = (has_stereo ? True : False);
} else {
Tcl_SetResult(togl->Interp,
TCL_STUPID
"Togl: failed querying pixel format attributes",
TCL_STATIC);
return DUMMY_WINDOW;
}
} else {
/* Need to do this after mapping window, so MacDrawable structure
* is more completely filled in */
na = 0;
attribs[na++] = AGL_MINIMUM_POLICY;
attribs[na++] = AGL_ROBUST;
if (togl->RgbaFlag) {
/* RGB[A] mode */
attribs[na++] = AGL_RGBA;
attribs[na++] = AGL_RED_SIZE;
attribs[na++] = togl->RgbaRed;
attribs[na++] = AGL_GREEN_SIZE;
attribs[na++] = togl->RgbaGreen;
attribs[na++] = AGL_BLUE_SIZE;
attribs[na++] = togl->RgbaBlue;
if (togl->AlphaFlag) {
attribs[na++] = AGL_ALPHA_SIZE;
attribs[na++] = togl->AlphaSize;
}
} else {
/* Color index mode */
attribs[na++] = AGL_BUFFER_SIZE;
attribs[na++] = 8;
}
if (togl->DepthFlag) {
attribs[na++] = AGL_DEPTH_SIZE;
attribs[na++] = togl->DepthSize;
}
if (togl->DoubleFlag) {
attribs[na++] = AGL_DOUBLEBUFFER;
}
if (togl->StencilFlag) {
attribs[na++] = AGL_STENCIL_SIZE;
attribs[na++] = togl->StencilSize;
}
if (togl->AccumFlag) {
attribs[na++] = AGL_ACCUM_RED_SIZE;
attribs[na++] = togl->AccumRed;
attribs[na++] = AGL_ACCUM_GREEN_SIZE;
attribs[na++] = togl->AccumGreen;
attribs[na++] = AGL_ACCUM_BLUE_SIZE;
attribs[na++] = togl->AccumBlue;
if (togl->AlphaFlag) {
attribs[na++] = AGL_ACCUM_ALPHA_SIZE;
attribs[na++] = togl->AccumAlpha;
}
}
if (togl->AuxNumber != 0) {
attribs[na++] = AGL_AUX_BUFFERS;
attribs[na++] = togl->AuxNumber;
}
attribs[na++] = AGL_NONE;
if ((fmt = aglChoosePixelFormat(NULL, 0, attribs)) == NULL) {
Tcl_SetResult(togl->Interp,
TCL_STUPID "Togl: couldn't choose pixel format",
TCL_STATIC);
return DUMMY_WINDOW;
}
}
/*
* Check whether to share lists.
*/
if (togl->ShareList) {
/* share display lists with existing togl widget */
Togl *shareWith = FindTogl(togl->ShareList);
if (shareWith)
shareCtx = shareWith->aglCtx;
}
if ((togl->aglCtx = aglCreateContext(fmt, shareCtx)) == NULL) {
GLenum err = aglGetError();
aglDestroyPixelFormat(fmt);
if (err == AGL_BAD_MATCH)
Tcl_SetResult(togl->Interp,
TCL_STUPID
"Togl: couldn't create context, shared context doesn't match",
TCL_STATIC);
else if (err == AGL_BAD_CONTEXT)
Tcl_SetResult(togl->Interp,
TCL_STUPID
"Togl: couldn't create context, bad shared context",
TCL_STATIC);
else if (err == AGL_BAD_PIXELFMT)
Tcl_SetResult(togl->Interp,
TCL_STUPID
"Togl: couldn't create context, bad pixel format",
TCL_STATIC);
else
Tcl_SetResult(togl->Interp,
TCL_STUPID
"Togl: couldn't create context, unknown reason",
TCL_STATIC);
return DUMMY_WINDOW;
}
aglDestroyPixelFormat(fmt);
if (!aglSetDrawable(togl->aglCtx,
# if defined(TOGL_AGL)
((MacDrawable *) (window))->toplevel->grafPtr
# else
((MacDrawable *) (window))->toplevel->portPtr
# endif
)) {
aglDestroyContext(togl->aglCtx);
Tcl_SetResult(togl->Interp,
TCL_STUPID "Togl: couldn't set drawable", TCL_STATIC);
return DUMMY_WINDOW;
}
/* Just for portability, define the simplest visinfo */
visinfo = &VisInf;
visinfo->visual = DefaultVisual(dpy, DefaultScreen(dpy));
visinfo->depth = visinfo->visual->bits_per_rgb;
Tk_SetWindowVisual(togl->TkWin, visinfo->visual, visinfo->depth, cmap);
}
#endif /* TOGL_AGL_CLASSIC || TOGL_AGL */
#if defined(TOGL_X11)
/* Check for a single/double buffering snafu */
{
int dbl_flag;
if (glXGetConfig(dpy, visinfo, GLX_DOUBLEBUFFER, &dbl_flag)) {
if (!togl->DoubleFlag && dbl_flag) {
/* We requested single buffering but had to accept a */
/* double buffered visual. Set the GL draw buffer to */
/* be the front buffer to simulate single buffering. */
glDrawBuffer(GL_FRONT);
}
}
}
#endif /* TOGL_X11 */
/* for EPS Output */
if (!togl->RgbaFlag) {
int index_size;
#if defined(TOGL_X11) || defined(TOGL_AGL_CLASSIC) || defined(TOGL_AGL)
GLint index_bits;
glGetIntegerv(GL_INDEX_BITS, &index_bits);
index_size = 1 << index_bits;
#elif defined(TOGL_WGL)
index_size = togl->CiColormapSize;
#endif /* TOGL_X11 */
if (togl->EpsMapSize != index_size) {
if (togl->EpsRedMap)
free(togl->EpsRedMap);
if (togl->EpsGreenMap)
free(togl->EpsGreenMap);
if (togl->EpsBlueMap)
free(togl->EpsBlueMap);
togl->EpsMapSize = index_size;
togl->EpsRedMap = (GLfloat *) calloc(index_size, sizeof (GLfloat));
togl->EpsGreenMap =
(GLfloat *) calloc(index_size, sizeof (GLfloat));
togl->EpsBlueMap = (GLfloat *) calloc(index_size, sizeof (GLfloat));
}
}
return window;
}
/*
* Togl_WorldChanged
*
* Add support for setgrid option.
*/
static void
Togl_WorldChanged(ClientData instanceData)
{
Togl *togl = (Togl *) instanceData;
Tk_GeometryRequest(togl->TkWin, togl->Width, togl->Height);
Tk_SetInternalBorder(togl->TkWin, 0);
if (togl->SetGrid > 0) {
Tk_SetGrid(togl->TkWin, togl->Width / togl->SetGrid,
togl->Height / togl->SetGrid, togl->SetGrid, togl->SetGrid);
} else {
Tk_UnsetGrid(togl->TkWin);
}
}
/*
* ToglCmdDeletedProc
*
* This procedure is invoked when a widget command is deleted. If
* the widget isn't already in the process of being destroyed,
* this command destroys it.
*
* Results:
* None.
*
* Side effects:
* The widget is destroyed.
*
*----------------------------------------------------------------------
*/
static void
ToglCmdDeletedProc(ClientData clientData)
{
Togl *togl = (Togl *) clientData;
Tk_Window tkwin = togl->TkWin;
/*
* This procedure could be invoked either because the window was
* destroyed and the command was then deleted (in which case tkwin
* is NULL) or because the command was deleted, and then this procedure
* destroys the widget.
*/
if (togl && tkwin) {
Tk_DeleteEventHandler(tkwin,
ExposureMask | StructureNotifyMask,
Togl_EventProc, (ClientData) togl);
}
#if defined(TOGL_X11)
if (togl->GlCtx) {
if (FindToglWithSameContext(togl) == NULL)
glXDestroyContext(togl->display, togl->GlCtx);
togl->GlCtx = NULL;
}
# ifdef USE_OVERLAY
if (togl->OverlayCtx) {
Tcl_HashEntry *entryPtr;
TkWindow *winPtr = (TkWindow *) togl->TkWin;
if (winPtr) {
entryPtr = Tcl_FindHashEntry(&winPtr->dispPtr->winTable,
(char *) togl->OverlayWindow);
Tcl_DeleteHashEntry(entryPtr);
}
if (FindToglWithSameOverlayContext(togl) == NULL)
glXDestroyContext(togl->display, togl->OverlayCtx);
togl->OverlayCtx = NULL;
}
# endif /* USE_OVERLAY */
#endif
/* TODO: delete contexts on other platforms */
if (tkwin != NULL) {
if (togl->SetGrid > 0) {
Tk_UnsetGrid(tkwin);
}
togl->TkWin = NULL;
Tk_DestroyWindow(tkwin);
}
}
/*
* Togl_Destroy
*
* Gets called when an Togl widget is destroyed.
*/
static void
Togl_Destroy(
#if (TK_MAJOR_VERSION * 100 + TK_MINOR_VERSION) >= 401
char *
#else
ClientData
#endif
clientData)
{
Togl *togl = (Togl *) clientData;
Tk_FreeOptions(configSpecs, WIDGREC togl, togl->display, 0);
#ifndef NO_TK_CURSOR
if (togl->Cursor != None) {
Tk_FreeCursor(togl->display, togl->Cursor);
}
#endif
if (togl->DestroyProc) {
togl->DestroyProc(togl);
}
/* remove from linked list */
RemoveFromList(togl);
#if !defined(TOGL_WGL)
/* TODO: why not on Windows? */
free(togl);
#endif
}
/*
* This gets called to handle Togl window configuration events
*/
static void
Togl_EventProc(ClientData clientData, XEvent *eventPtr)
{
Togl *togl = (Togl *) clientData;
switch (eventPtr->type) {
case Expose:
if (eventPtr->xexpose.count == 0) {
if (!togl->UpdatePending
&& eventPtr->xexpose.window == Tk_WindowId(togl->TkWin)) {
Togl_PostRedisplay(togl);
}
#if defined(TOGL_X11)
if (!togl->OverlayUpdatePending && togl->OverlayFlag
&& togl->OverlayIsMapped
&& eventPtr->xexpose.window == togl->OverlayWindow) {
Togl_PostOverlayRedisplay(togl);
}
#endif /* TOGL_X11 */
}
break;
case ConfigureNotify:
if (togl->Width != Tk_Width(togl->TkWin)
|| togl->Height != Tk_Height(togl->TkWin)) {
togl->Width = Tk_Width(togl->TkWin);
togl->Height = Tk_Height(togl->TkWin);
(void) XResizeWindow(Tk_Display(togl->TkWin),
Tk_WindowId(togl->TkWin), togl->Width, togl->Height);
#if defined(TOGL_X11)
if (togl->OverlayFlag) {
(void) XResizeWindow(Tk_Display(togl->TkWin),
togl->OverlayWindow, togl->Width, togl->Height);
(void) XRaiseWindow(Tk_Display(togl->TkWin),
togl->OverlayWindow);
}
#endif /* TOGL_X11 */
Togl_MakeCurrent(togl);
if (togl->ReshapeProc) {
togl->ReshapeProc(togl);
} else {
glViewport(0, 0, togl->Width, togl->Height);
#if defined(TOGL_X11)
if (togl->OverlayFlag) {
Togl_UseLayer(togl, TOGL_OVERLAY);
glViewport(0, 0, togl->Width, togl->Height);
Togl_UseLayer(togl, TOGL_NORMAL);
}
#endif /* TOGL_X11 */
}
#ifndef TOGL_WGL /* causes double redisplay on Win32 platform */
Togl_PostRedisplay(togl);
#endif /* TOGL_WGL */
}
break;
case MapNotify:
#if defined(TOGL_AGL)
{
/*
* See comment for the UnmapNotify case below.
*/
AGLDrawable d = TkMacOSXGetDrawablePort(Tk_WindowId(togl->TkWin));
aglSetDrawable(togl->aglCtx, d);
}
#endif /* TOGL_AGL */
break;
case UnmapNotify:
#if defined(TOGL_AGL)
{
/*
* For Mac OS X Aqua, Tk subwindows are not implemented as
* separate Aqua windows. They are just different regions of
* a single Aqua window. To unmap them they are just not drawn.
* Have to disconnect the AGL context otherwise they will continue
* to be displayed directly by Aqua.
*/
aglSetDrawable(togl->aglCtx, NULL);
}
#endif /* TOGL_AGL */
break;
case DestroyNotify:
if (togl->TkWin != NULL) {
if (togl->SetGrid > 0) {
Tk_UnsetGrid(togl->TkWin);
}
togl->TkWin = NULL;
#if (TCL_MAJOR_VERSION * 100 + TCL_MINOR_VERSION) >= 800
/* This function new in Tcl/Tk 8.0 */
(void) Tcl_DeleteCommandFromToken(togl->Interp, togl->widgetCmd);
#endif
}
if (togl->TimerProc != NULL) {
#if (TK_MAJOR_VERSION * 100 + TK_MINOR_VERSION) >= 401
Tcl_DeleteTimerHandler(togl->timerHandler);
#else
Tk_DeleteTimerHandler(togl->timerHandler);
#endif
}
if (togl->UpdatePending) {
#if (TCL_MAJOR_VERSION * 100 + TCL_MINOR_VERSION) >= 705
Tcl_CancelIdleCall(Togl_Render, (ClientData) togl);
#else
Tk_CancelIdleCall(Togl_Render, (ClientData) togl);
#endif
}
#if (TK_MAJOR_VERSION * 100 + TK_MINOR_VERSION) >= 401
Tcl_EventuallyFree((ClientData) togl, Togl_Destroy);
#else
Tk_EventuallyFree((ClientData) togl, Togl_Destroy);
#endif
break;
default:
/* nothing */
;
}
}
void
Togl_PostRedisplay(Togl *togl)
{
if (!togl->UpdatePending) {
togl->UpdatePending = True;
Tk_DoWhenIdle(Togl_Render, (ClientData) togl);
}
}
void
Togl_SwapBuffers(const Togl *togl)
{
if (togl->DoubleFlag) {
#if defined(TOGL_WGL)
int res = SwapBuffers(togl->tglGLHdc);
assert(res == TRUE);
#elif defined(TOGL_X11)
glXSwapBuffers(Tk_Display(togl->TkWin), Tk_WindowId(togl->TkWin));
#elif defined(TOGL_AGL_CLASSIC) || defined(TOGL_AGL)
aglSwapBuffers(togl->aglCtx);
#endif /* TOGL_WGL */
} else {
glFlush();
}
}
const char *
Togl_Ident(const Togl *togl)
{
return togl->Ident;
}
int
Togl_Width(const Togl *togl)
{
return togl->Width;
}
int
Togl_Height(const Togl *togl)
{
return togl->Height;
}
Tcl_Interp *
Togl_Interp(const Togl *togl)
{
return togl->Interp;
}
Tk_Window
Togl_TkWin(const Togl *togl)
{
return togl->TkWin;
}
#if defined(TOGL_X11)
/*
* A replacement for XAllocColor. This function should never
* fail to allocate a color. When XAllocColor fails, we return
* the nearest matching color. If we have to allocate many colors
* this function isn't too efficient; the XQueryColors() could be
* done just once.
* Written by Michael Pichler, Brian Paul, Mark Kilgard
* Input: dpy - X display
* cmap - X colormap
* cmapSize - size of colormap
* In/Out: color - the XColor struct
* Output: exact - 1=exact color match, 0=closest match
*/
static void
noFaultXAllocColor(Display *dpy, Colormap cmap, int cmapSize,
XColor *color, int *exact)
{
XColor *ctable, subColor;
int i, bestmatch;
double mindist; /* 3*2^16^2 exceeds long int precision. */
/* First try just using XAllocColor. */
if (XAllocColor(dpy, cmap, color)) {
*exact = 1;
return;
}
/* Retrieve color table entries. */
/* XXX alloca candidate. */
ctable = (XColor *) malloc(cmapSize * sizeof (XColor));
for (i = 0; i < cmapSize; i++) {
ctable[i].pixel = i;
}
(void) XQueryColors(dpy, cmap, ctable, cmapSize);
/* Find best match. */
bestmatch = -1;
mindist = 0;
for (i = 0; i < cmapSize; i++) {
double dr = (double) color->red - (double) ctable[i].red;
double dg = (double) color->green - (double) ctable[i].green;
double db = (double) color->blue - (double) ctable[i].blue;
double dist = dr * dr + dg * dg + db * db;
if (bestmatch < 0 || dist < mindist) {
bestmatch = i;
mindist = dist;
}
}
/* Return result. */
subColor.red = ctable[bestmatch].red;
subColor.green = ctable[bestmatch].green;
subColor.blue = ctable[bestmatch].blue;
free(ctable);
/* Try to allocate the closest match color. This should only fail if the
* cell is read/write. Otherwise, we're incrementing the cell's reference
* count. */
if (!XAllocColor(dpy, cmap, &subColor)) {
/* do this to work around a problem reported by Frank Ortega */
subColor.pixel = (unsigned long) bestmatch;
subColor.red = ctable[bestmatch].red;
subColor.green = ctable[bestmatch].green;
subColor.blue = ctable[bestmatch].blue;
subColor.flags = DoRed | DoGreen | DoBlue;
}
*color = subColor;
}
#elif defined(TOGL_WGL)
static UINT
Win32AllocColor(const Togl *togl, float red, float green, float blue)
{
/* Modified version of XAllocColor emulation of Tk. - returns index,
* instead of color itself - allocates logical palette entry even for
* non-palette devices */
TkWinColormap *cmap = (TkWinColormap *) Tk_Colormap(togl->TkWin);
UINT index;
COLORREF newColor, closeColor;
PALETTEENTRY entry, closeEntry;
int new, refCount;
Tcl_HashEntry *entryPtr;
entry.peRed = (unsigned char) (red * 255 + .5);
entry.peGreen = (unsigned char) (green * 255 + .5);
entry.peBlue = (unsigned char) (blue * 255 + .5);
entry.peFlags = 0;
/*
* Find the nearest existing palette entry.
*/
newColor = RGB(entry.peRed, entry.peGreen, entry.peBlue);
index = GetNearestPaletteIndex(cmap->palette, newColor);
GetPaletteEntries(cmap->palette, index, 1, &closeEntry);
closeColor = RGB(closeEntry.peRed, closeEntry.peGreen, closeEntry.peBlue);
/*
* If this is not a duplicate and colormap is not full, allocate a new entry.
*/
if (newColor != closeColor) {
if (cmap->size == (unsigned int) togl->CiColormapSize) {
entry = closeEntry;
} else {
cmap->size++;
ResizePalette(cmap->palette, cmap->size);
index = cmap->size - 1;
SetPaletteEntries(cmap->palette, index, 1, &entry);
SelectPalette(togl->tglGLHdc, cmap->palette, TRUE);
RealizePalette(togl->tglGLHdc);
}
}
newColor = PALETTERGB(entry.peRed, entry.peGreen, entry.peBlue);
entryPtr = Tcl_CreateHashEntry(&cmap->refCounts, (char *) newColor, &new);
if (new) {
refCount = 1;
} else {
refCount = ((int) Tcl_GetHashValue(entryPtr)) + 1;
}
Tcl_SetHashValue(entryPtr, (ClientData) refCount);
/* for EPS output */
togl->EpsRedMap[index] = (GLfloat) (entry.peRed / 255.0);
togl->EpsGreenMap[index] = (GLfloat) (entry.peGreen / 255.0);
togl->EpsBlueMap[index] = (GLfloat) (entry.peBlue / 255.0);
return index;
}
static void
Win32FreeColor(const Togl *togl, unsigned long index)
{
TkWinColormap *cmap = (TkWinColormap *) Tk_Colormap(togl->TkWin);
COLORREF cref;
UINT count, refCount;
PALETTEENTRY entry, *entries;
Tcl_HashEntry *entryPtr;
if (index >= cmap->size) {
panic("Tried to free a color that isn't allocated.");
}
GetPaletteEntries(cmap->palette, index, 1, &entry);
cref = PALETTERGB(entry.peRed, entry.peGreen, entry.peBlue);
entryPtr = Tcl_FindHashEntry(&cmap->refCounts, (char *) cref);
if (!entryPtr) {
panic("Tried to free a color that isn't allocated.");
}
refCount = (int) Tcl_GetHashValue(entryPtr) - 1;
if (refCount == 0) {
count = cmap->size - index;
entries = (PALETTEENTRY *) ckalloc(sizeof (PALETTEENTRY) * count);
GetPaletteEntries(cmap->palette, index + 1, count, entries);
SetPaletteEntries(cmap->palette, index, count, entries);
SelectPalette(togl->tglGLHdc, cmap->palette, TRUE);
RealizePalette(togl->tglGLHdc);
ckfree((char *) entries);
cmap->size--;
Tcl_DeleteHashEntry(entryPtr);
} else {
Tcl_SetHashValue(entryPtr, (ClientData) refCount);
}
}
static void
Win32SetColor(const Togl *togl,
unsigned long index, float red, float green, float blue)
{
TkWinColormap *cmap = (TkWinColormap *) Tk_Colormap(togl->TkWin);
PALETTEENTRY entry;
entry.peRed = (unsigned char) (red * 255 + .5);
entry.peGreen = (unsigned char) (green * 255 + .5);
entry.peBlue = (unsigned char) (blue * 255 + .5);
entry.peFlags = 0;
SetPaletteEntries(cmap->palette, index, 1, &entry);
SelectPalette(togl->tglGLHdc, cmap->palette, TRUE);
RealizePalette(togl->tglGLHdc);
/* for EPS output */
togl->EpsRedMap[index] = (GLfloat) (entry.peRed / 255.0);
togl->EpsGreenMap[index] = (GLfloat) (entry.peGreen / 255.0);
togl->EpsBlueMap[index] = (GLfloat) (entry.peBlue / 255.0);
}
#endif /* TOGL_X11 */
unsigned long
Togl_AllocColor(const Togl *togl, float red, float green, float blue)
{
if (togl->RgbaFlag) {
(void) fprintf(stderr,
"Error: Togl_AllocColor illegal in RGBA mode.\n");
return 0;
}
/* TODO: maybe not... */
if (togl->PrivateCmapFlag) {
(void) fprintf(stderr,
"Error: Togl_FreeColor illegal with private colormap\n");
return 0;
}
#if defined(TOGL_X11)
{
XColor xcol;
int exact;
xcol.red = (short) (red * 65535.0);
xcol.green = (short) (green * 65535.0);
xcol.blue = (short) (blue * 65535.0);
noFaultXAllocColor(Tk_Display(togl->TkWin), Tk_Colormap(togl->TkWin),
Tk_Visual(togl->TkWin)->map_entries, &xcol, &exact);
/* for EPS output */
togl->EpsRedMap[xcol.pixel] = (float) xcol.red / 65535.0;
togl->EpsGreenMap[xcol.pixel] = (float) xcol.green / 65535.0;
togl->EpsBlueMap[xcol.pixel] = (float) xcol.blue / 65535.0;
return xcol.pixel;
}
#elif defined(TOGL_WGL)
return Win32AllocColor(togl, red, green, blue);
#elif defined(TOGL_AGL_CLASSIC) || defined(TOGL_AGL)
/* still need to implement this on Mac... */
return 0;
#endif /* TOGL_X11 */
}
void
Togl_FreeColor(const Togl *togl, unsigned long pixel)
{
if (togl->RgbaFlag) {
(void) fprintf(stderr,
"Error: Togl_AllocColor illegal in RGBA mode.\n");
return;
}
/* TODO: maybe not... */
if (togl->PrivateCmapFlag) {
(void) fprintf(stderr,
"Error: Togl_FreeColor illegal with private colormap\n");
return;
}
#if defined(TOGL_X11)
(void) XFreeColors(Tk_Display(togl->TkWin), Tk_Colormap(togl->TkWin),
&pixel, 1, 0);
#elif defined(TOGL_WGL)
Win32FreeColor(togl, pixel);
#endif /* TOGL_X11 */
}
void
Togl_SetColor(const Togl *togl,
unsigned long index, float red, float green, float blue)
{
if (togl->RgbaFlag) {
(void) fprintf(stderr,
"Error: Togl_AllocColor illegal in RGBA mode.\n");
return;
}
if (!togl->PrivateCmapFlag) {
(void) fprintf(stderr,
"Error: Togl_SetColor requires a private colormap\n");
return;
}
#if defined(TOGL_X11)
{
XColor xcol;
xcol.pixel = index;
xcol.red = (short) (red * 65535.0);
xcol.green = (short) (green * 65535.0);
xcol.blue = (short) (blue * 65535.0);
xcol.flags = DoRed | DoGreen | DoBlue;
(void) XStoreColor(Tk_Display(togl->TkWin), Tk_Colormap(togl->TkWin),
&xcol);
/* for EPS output */
togl->EpsRedMap[xcol.pixel] = (float) xcol.red / 65535.0;
togl->EpsGreenMap[xcol.pixel] = (float) xcol.green / 65535.0;
togl->EpsBlueMap[xcol.pixel] = (float) xcol.blue / 65535.0;
}
#elif defined(TOGL_WGL)
Win32SetColor(togl, index, red, green, blue);
#endif /* TOGL_X11 */
}
#if TOGL_USE_FONTS == 1
# if defined(TOGL_WGL)
# include "tkWinInt.h"
# include "tkFont.h"
/*
* The following structure represents Windows' implementation of a font.
*/
typedef struct WinFont
{
TkFont font; /* Stuff used by generic font package. Must be
* first in structure. */
HFONT hFont; /* Windows information about font. */
HWND hwnd; /* Toplevel window of application that owns
* this font, used for getting HDC. */
int widths[256]; /* Widths of first 256 chars in this font. */
} WinFont;
# endif /* TOGL_WGL */
# define MAX_FONTS 1000
static GLuint ListBase[MAX_FONTS];
static GLuint ListCount[MAX_FONTS];
/*
* Load the named bitmap font as a sequence of bitmaps in a display list.
* fontname may be one of the predefined fonts like TOGL_BITMAP_8_BY_13
* or an X font name, or a Windows font name, etc.
*/
GLuint
Togl_LoadBitmapFont(const Togl *togl, const char *fontname)
{
static Bool FirstTime = True;
# if defined(TOGL_X11)
XFontStruct *fontinfo;
# elif defined(TOGL_WGL)
WinFont *winfont;
HFONT oldFont;
TEXTMETRIC tm;
# endif
/* TOGL_X11 */
int first, last, count;
GLuint fontbase;
const char *name;
/* Initialize the ListBase and ListCount arrays */
if (FirstTime) {
int i;
for (i = 0; i < MAX_FONTS; i++) {
ListBase[i] = ListCount[i] = 0;
}
FirstTime = False;
}
/*
* This method of selecting X fonts according to a TOGL_ font name
* is a kludge. To be fixed when I find time...
*/
if (fontname == TOGL_BITMAP_8_BY_13) {
name = "8x13";
} else if (fontname == TOGL_BITMAP_9_BY_15) {
name = "9x15";
} else if (fontname == TOGL_BITMAP_TIMES_ROMAN_10) {
name = "-adobe-times-medium-r-normal--10-100-75-75-p-54-iso8859-1";
} else if (fontname == TOGL_BITMAP_TIMES_ROMAN_24) {
name = "-adobe-times-medium-r-normal--24-240-75-75-p-124-iso8859-1";
} else if (fontname == TOGL_BITMAP_HELVETICA_10) {
name = "-adobe-helvetica-medium-r-normal--10-100-75-75-p-57-iso8859-1";
} else if (fontname == TOGL_BITMAP_HELVETICA_12) {
name = "-adobe-helvetica-medium-r-normal--12-120-75-75-p-67-iso8859-1";
} else if (fontname == TOGL_BITMAP_HELVETICA_18) {
name = "-adobe-helvetica-medium-r-normal--18-180-75-75-p-98-iso8859-1";
} else if (!fontname) {
name = DEFAULT_FONTNAME;
} else {
name = (const char *) fontname;
}
assert(name);
# if defined(TOGL_X11)
fontinfo = (XFontStruct *) XLoadQueryFont(Tk_Display(togl->TkWin), name);
if (!fontinfo) {
return 0;
}
first = fontinfo->min_char_or_byte2;
last = fontinfo->max_char_or_byte2;
# elif defined(TOGL_WGL)
winfont = (WinFont *) Tk_GetFont(togl->Interp, togl->TkWin, name);
if (!winfont) {
return 0;
}
oldFont = SelectObject(togl->tglGLHdc, winfont->hFont);
GetTextMetrics(togl->tglGLHdc, &tm);
first = tm.tmFirstChar;
last = tm.tmLastChar;
# elif defined(TOGL_AGL_CLASSIC) || defined(TOGL_AGL)
first = 10; /* don't know how to determine font range on
* Mac... */
last = 127;
# endif
/* TOGL_X11 */
count = last - first + 1;
fontbase = glGenLists((GLuint) (last + 1));
if (fontbase == 0) {
# ifdef TOGL_WGL
SelectObject(togl->tglGLHdc, oldFont);
Tk_FreeFont((Tk_Font) winfont);
# endif
/* TOGL_WGL */
return 0;
}
# if defined(TOGL_WGL)
wglUseFontBitmaps(togl->tglGLHdc, first, count, (int) fontbase + first);
SelectObject(togl->tglGLHdc, oldFont);
Tk_FreeFont((Tk_Font) winfont);
# elif defined(TOGL_X11)
glXUseXFont(fontinfo->fid, first, count, (int) fontbase + first);
# elif defined(TOGL_AGL_CLASSIC) || defined(TOGL_AGL)
aglUseFont(togl->aglCtx, 1, 0, 14, /* for now, only app font, regular
* 14-point */
10, 118, fontbase + first);
# endif
/* Record the list base and number of display lists for
* Togl_UnloadBitmapFont(). */
{
int i;
for (i = 0; i < MAX_FONTS; i++) {
if (ListBase[i] == 0) {
ListBase[i] = fontbase;
ListCount[i] = last + 1;
break;
}
}
}
return fontbase;
}
/*
* Release the display lists which were generated by Togl_LoadBitmapFont().
*/
void
Togl_UnloadBitmapFont(const Togl *togl, GLuint fontbase)
{
int i;
(void) togl;
for (i = 0; i < MAX_FONTS; i++) {
if (ListBase[i] == fontbase) {
glDeleteLists(ListBase[i], ListCount[i]);
ListBase[i] = ListCount[i] = 0;
return;
}
}
}
#endif /* TOGL_USE_FONTS */
/*
* Overlay functions
*/
void
Togl_UseLayer(Togl *togl, int layer)
{
if (!togl->OverlayWindow)
return;
if (layer == TOGL_OVERLAY) {
#if defined(TOGL_WGL)
int res = wglMakeCurrent(togl->tglGLHdc, togl->tglGLOverlayHglrc);
assert(res == TRUE);
#elif defined(TOGL_X11)
(void) glXMakeCurrent(Tk_Display(togl->TkWin),
togl->OverlayWindow, togl->OverlayCtx);
# if defined(__sgi)
if (togl->OldStereoFlag)
oldStereoMakeCurrent(Tk_Display(togl->TkWin),
togl->OverlayWindow, togl->OverlayCtx);
# endif
/* __sgi STEREO */
#endif /* TOGL_WGL */
} else if (layer == TOGL_NORMAL) {
#if defined(TOGL_WGL)
int res = wglMakeCurrent(togl->tglGLHdc, togl->tglGLHglrc);
assert(res == TRUE);
#elif defined(TOGL_X11)
(void) glXMakeCurrent(Tk_Display(togl->TkWin),
Tk_WindowId(togl->TkWin), togl->GlCtx);
# if defined(__sgi)
if (togl->OldStereoFlag)
oldStereoMakeCurrent(Tk_Display(togl->TkWin),
Tk_WindowId(togl->TkWin), togl->GlCtx);
# endif
/* __sgi STEREO */
#endif /* TOGL_WGL */
} else {
/* error */
}
}
void
Togl_ShowOverlay(Togl *togl)
{
#if defined(TOGL_X11) /* not yet implemented on Windows */
if (togl->OverlayWindow) {
(void) XMapWindow(Tk_Display(togl->TkWin), togl->OverlayWindow);
(void) XInstallColormap(Tk_Display(togl->TkWin), togl->OverlayCmap);
togl->OverlayIsMapped = True;
}
#endif /* TOGL_X11 */
}
void
Togl_HideOverlay(Togl *togl)
{
if (togl->OverlayWindow && togl->OverlayIsMapped) {
(void) XUnmapWindow(Tk_Display(togl->TkWin), togl->OverlayWindow);
togl->OverlayIsMapped = False;
}
}
void
Togl_PostOverlayRedisplay(Togl *togl)
{
if (!togl->OverlayUpdatePending
&& togl->OverlayWindow && togl->OverlayDisplayProc) {
Tk_DoWhenIdle(RenderOverlay, (ClientData) togl);
togl->OverlayUpdatePending = True;
}
}
void
Togl_OverlayDisplayFunc(Togl_Callback *proc)
{
DefaultOverlayDisplayProc = proc;
}
int
Togl_ExistsOverlay(const Togl *togl)
{
return togl->OverlayFlag;
}
int
Togl_GetOverlayTransparentValue(const Togl *togl)
{
return togl->OverlayTransparentPixel;
}
int
Togl_IsMappedOverlay(const Togl *togl)
{
return togl->OverlayFlag && togl->OverlayIsMapped;
}
unsigned long
Togl_AllocColorOverlay(const Togl *togl, float red, float green, float blue)
{
#if defined(TOGL_X11) /* not yet implemented on Windows */
if (togl->OverlayFlag && togl->OverlayCmap) {
XColor xcol;
xcol.red = (short) (red * 65535.0);
xcol.green = (short) (green * 65535.0);
xcol.blue = (short) (blue * 65535.0);
if (!XAllocColor(Tk_Display(togl->TkWin), togl->OverlayCmap, &xcol))
return (unsigned long) -1;
return xcol.pixel;
}
#endif /* TOGL_X11 */
return (unsigned long) -1;
}
void
Togl_FreeColorOverlay(const Togl *togl, unsigned long pixel)
{
#if defined(TOGL_X11) /* not yet implemented on Windows */
if (togl->OverlayFlag && togl->OverlayCmap) {
(void) XFreeColors(Tk_Display(togl->TkWin), togl->OverlayCmap, &pixel,
1, 0);
}
#endif /* TOGL_X11 */
}
/*
* User client data
*/
void
Togl_ClientData(ClientData clientData)
{
DefaultClientData = clientData;
}
ClientData
Togl_GetClientData(const Togl *togl)
{
return togl->Client_Data;
}
void
Togl_SetClientData(Togl *togl, ClientData clientData)
{
togl->Client_Data = clientData;
}
/*
* X11-only functions
* Contributed by Miguel A. De Riera Pasenau (miguel@DALILA.UPC.ES)
*/
Display *
Togl_Display(const Togl *togl)
{
return Tk_Display(togl->TkWin);
}
Screen *
Togl_Screen(const Togl *togl)
{
return Tk_Screen(togl->TkWin);
}
int
Togl_ScreenNumber(const Togl *togl)
{
return Tk_ScreenNumber(togl->TkWin);
}
Colormap
Togl_Colormap(const Togl *togl)
{
return Tk_Colormap(togl->TkWin);
}
#ifdef MESA_COLOR_HACK
/*
* Let's know how many free colors do we have
*/
# if 0
static unsigned char rojo[] = { 4, 39, 74, 110, 145, 181, 216, 251 }, verde[] = {
4, 39, 74, 110, 145, 181, 216, 251}, azul[] = {
4, 39, 74, 110, 145, 181, 216, 251};
unsigned char rojo[] = { 4, 36, 72, 109, 145, 182, 218, 251 }, verde[] = {
4, 36, 72, 109, 145, 182, 218, 251}, azul[] = {
4, 36, 72, 109, 145, 182, 218, 251};
azul[] = {
0, 85, 170, 255};
# endif
# define RLEVELS 5
# define GLEVELS 9
# define BLEVELS 5
/* to free dithered_rgb_colormap pixels allocated by Mesa */
static unsigned long *ToglMesaUsedPixelCells = NULL;
static int ToglMesaUsedFreeCells = 0;
static int
get_free_color_cells(Display *display, int screen, Colormap colormap)
{
if (!ToglMesaUsedPixelCells) {
XColor xcol;
int i;
int colorsfailed, ncolors = XDisplayCells(display, screen);
long r, g, b;
ToglMesaUsedPixelCells =
(unsigned long *) calloc(ncolors, sizeof (unsigned long));
/* Allocate X colors and initialize color_table[], red_table[], etc */
/* de Mesa 2.1: xmesa1.c setup_dithered_(...) */
i = colorsfailed = 0;
for (r = 0; r < RLEVELS; r++)
for (g = 0; g < GLEVELS; g++)
for (b = 0; b < BLEVELS; b++) {
int exact;
xcol.red = (r * 65535) / (RLEVELS - 1);
xcol.green = (g * 65535) / (GLEVELS - 1);
xcol.blue = (b * 65535) / (BLEVELS - 1);
noFaultXAllocColor(display, colormap, ncolors,
&xcol, &exact);
ToglMesaUsedPixelCells[i++] = xcol.pixel;
if (!exact) {
colorsfailed++;
}
}
ToglMesaUsedFreeCells = i;
XFreeColors(display, colormap, ToglMesaUsedPixelCells,
ToglMesaUsedFreeCells, 0x00000000);
}
return ToglMesaUsedFreeCells;
}
static void
free_default_color_cells(Display *display, Colormap colormap)
{
if (ToglMesaUsedPixelCells) {
XFreeColors(display, colormap, ToglMesaUsedPixelCells,
ToglMesaUsedFreeCells, 0x00000000);
free(ToglMesaUsedPixelCells);
ToglMesaUsedPixelCells = NULL;
ToglMesaUsedFreeCells = 0;
}
}
#endif
/*
* Generate EPS file.
* Contributed by Miguel A. De Riera Pasenau (miguel@DALILA.UPC.ES)
*/
/* Function that creates a EPS File from a created pixmap on the current
* context. Based on the code from Copyright (c) Mark J. Kilgard, 1996.
* Parameters: name_file, b&w / Color flag, redraw function. The redraw
* function is needed in order to draw things into the new created pixmap. */
/* Copyright (c) Mark J. Kilgard, 1996. */
static GLvoid *
grabPixels(int inColor, unsigned int width, unsigned int height)
{
GLvoid *buffer;
GLint swapbytes, lsbfirst, rowlength;
GLint skiprows, skippixels, alignment;
GLenum format;
unsigned int size;
if (inColor) {
format = GL_RGB;
size = width * height * 3;
} else {
format = GL_LUMINANCE;
size = width * height * 1;
}
buffer = (GLvoid *) malloc(size);
if (buffer == NULL)
return NULL;
/* Save current modes. */
glGetIntegerv(GL_PACK_SWAP_BYTES, &swapbytes);
glGetIntegerv(GL_PACK_LSB_FIRST, &lsbfirst);
glGetIntegerv(GL_PACK_ROW_LENGTH, &rowlength);
glGetIntegerv(GL_PACK_SKIP_ROWS, &skiprows);
glGetIntegerv(GL_PACK_SKIP_PIXELS, &skippixels);
glGetIntegerv(GL_PACK_ALIGNMENT, &alignment);
/* Little endian machines (DEC Alpha for example) could benefit from
* setting GL_PACK_LSB_FIRST to GL_TRUE instead of GL_FALSE, but this would
* * * * * * * * * require changing the generated bitmaps too. */
glPixelStorei(GL_PACK_SWAP_BYTES, GL_FALSE);
glPixelStorei(GL_PACK_LSB_FIRST, GL_FALSE);
glPixelStorei(GL_PACK_ROW_LENGTH, 0);
glPixelStorei(GL_PACK_SKIP_ROWS, 0);
glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
glPixelStorei(GL_PACK_ALIGNMENT, 1);
/* Actually read the pixels. */
glReadPixels(0, 0, width, height, format,
GL_UNSIGNED_BYTE, (GLvoid *) buffer);
/* Restore saved modes. */
glPixelStorei(GL_PACK_SWAP_BYTES, swapbytes);
glPixelStorei(GL_PACK_LSB_FIRST, lsbfirst);
glPixelStorei(GL_PACK_ROW_LENGTH, rowlength);
glPixelStorei(GL_PACK_SKIP_ROWS, skiprows);
glPixelStorei(GL_PACK_SKIP_PIXELS, skippixels);
glPixelStorei(GL_PACK_ALIGNMENT, alignment);
return buffer;
}
static int
generateEPS(const char *filename, int inColor,
unsigned int width, unsigned int height)
{
FILE *fp;
GLvoid *pixels;
unsigned char *curpix;
unsigned int components, i;
int pos;
unsigned int bitpixel;
pixels = grabPixels(inColor, width, height);
if (pixels == NULL)
return 1;
if (inColor)
components = 3; /* Red, green, blue. */
else
components = 1; /* Luminance. */
fp = fopen(filename, "w");
if (fp == NULL) {
return 2;
}
(void) fprintf(fp, "%%!PS-Adobe-2.0 EPSF-1.2\n");
(void) fprintf(fp, "%%%%Creator: OpenGL pixmap render output\n");
(void) fprintf(fp, "%%%%BoundingBox: 0 0 %d %d\n", width, height);
(void) fprintf(fp, "%%%%EndComments\n");
i = (((width * height) + 7) / 8) / 40; /* # of lines, 40 bytes per
* line */
(void) fprintf(fp, "%%%%BeginPreview: %d %d %d %d\n%%", width, height, 1,
i);
pos = 0;
curpix = (unsigned char *) pixels;
for (i = 0; i < width * height * components;) {
bitpixel = 0;
if (inColor) {
double pix = 0;
pix = 0.30 * (double) curpix[i] + 0.59 * (double) curpix[i + 1] +
0.11 * (double) curpix[i + 2];
i += 3;
if (pix > 127.0)
bitpixel |= 0x80;
pix = 0.30 * (double) curpix[i] + 0.59 * (double) curpix[i + 1] +
0.11 * (double) curpix[i + 2];
i += 3;
if (pix > 127.0)
bitpixel |= 0x40;
pix = 0.30 * (double) curpix[i] + 0.59 * (double) curpix[i + 1] +
0.11 * (double) curpix[i + 2];
i += 3;
if (pix > 127.0)
bitpixel |= 0x20;
pix = 0.30 * (double) curpix[i] + 0.59 * (double) curpix[i + 1] +
0.11 * (double) curpix[i + 2];
i += 3;
if (pix > 127.0)
bitpixel |= 0x10;
pix = 0.30 * (double) curpix[i] + 0.59 * (double) curpix[i + 1] +
0.11 * (double) curpix[i + 2];
i += 3;
if (pix > 127.0)
bitpixel |= 0x08;
pix = 0.30 * (double) curpix[i] + 0.59 * (double) curpix[i + 1] +
0.11 * (double) curpix[i + 2];
i += 3;
if (pix > 127.0)
bitpixel |= 0x04;
pix = 0.30 * (double) curpix[i] + 0.59 * (double) curpix[i + 1] +
0.11 * (double) curpix[i + 2];
i += 3;
if (pix > 127.0)
bitpixel |= 0x02;
pix = 0.30 * (double) curpix[i] + 0.59 * (double) curpix[i + 1] +
0.11 * (double) curpix[i + 2];
i += 3;
if (pix > 127.0)
bitpixel |= 0x01;
} else {
if (curpix[i++] > 0x7f)
bitpixel |= 0x80;
if (curpix[i++] > 0x7f)
bitpixel |= 0x40;
if (curpix[i++] > 0x7f)
bitpixel |= 0x20;
if (curpix[i++] > 0x7f)
bitpixel |= 0x10;
if (curpix[i++] > 0x7f)
bitpixel |= 0x08;
if (curpix[i++] > 0x7f)
bitpixel |= 0x04;
if (curpix[i++] > 0x7f)
bitpixel |= 0x02;
if (curpix[i++] > 0x7f)
bitpixel |= 0x01;
}
(void) fprintf(fp, "%02x", bitpixel);
if (++pos >= 40) {
(void) fprintf(fp, "\n%%");
pos = 0;
}
}
if (pos)
(void) fprintf(fp, "\n%%%%EndPreview\n");
else
(void) fprintf(fp, "%%EndPreview\n");
(void) fprintf(fp, "gsave\n");
(void) fprintf(fp, "/bwproc {\n");
(void) fprintf(fp, " rgbproc\n");
(void) fprintf(fp, " dup length 3 idiv string 0 3 0\n");
(void) fprintf(fp, " 5 -1 roll {\n");
(void) fprintf(fp, " add 2 1 roll 1 sub dup 0 eq\n");
(void) fprintf(fp, " { pop 3 idiv 3 -1 roll dup 4 -1 roll dup\n");
(void) fprintf(fp, " 3 1 roll 5 -1 roll put 1 add 3 0 }\n");
(void) fprintf(fp, " { 2 1 roll } ifelse\n");
(void) fprintf(fp, " } forall\n");
(void) fprintf(fp, " pop pop pop\n");
(void) fprintf(fp, "} def\n");
(void) fprintf(fp, "systemdict /colorimage known not {\n");
(void) fprintf(fp, " /colorimage {\n");
(void) fprintf(fp, " pop\n");
(void) fprintf(fp, " pop\n");
(void) fprintf(fp, " /rgbproc exch def\n");
(void) fprintf(fp, " { bwproc } image\n");
(void) fprintf(fp, " } def\n");
(void) fprintf(fp, "} if\n");
(void) fprintf(fp, "/picstr %d string def\n", width * components);
(void) fprintf(fp, "%d %d scale\n", width, height);
(void) fprintf(fp, "%d %d %d\n", width, height, 8);
(void) fprintf(fp, "[%d 0 0 %d 0 0]\n", width, height);
(void) fprintf(fp, "{currentfile picstr readhexstring pop}\n");
(void) fprintf(fp, "false %d\n", components);
(void) fprintf(fp, "colorimage\n");
curpix = (unsigned char *) pixels;
pos = 0;
for (i = width * height * components; i != 0; i--) {
(void) fprintf(fp, "%02hx", *curpix++);
if (++pos >= 40) {
(void) fprintf(fp, "\n");
pos = 0;
}
}
if (pos)
(void) fprintf(fp, "\n");
(void) fprintf(fp, "grestore\n");
free(pixels);
if (fclose(fp) != 0)
return 1;
return 0;
}
/* int Togl_DumpToEpsFile( const Togl *togl, const char *filename, int inColor,
* void (*user_redraw)(void)) */
/* changed by GG */
int
Togl_DumpToEpsFile(const Togl *togl, const char *filename,
int inColor, void (*user_redraw) (const Togl *))
{
Bool using_mesa = False;
#if 0
Pixmap eps_pixmap;
GLXPixmap eps_glxpixmap;
XVisualInfo *vi = togl->VisInfo;
Window win = Tk_WindowId(togl->TkWin);
#endif
int retval;
unsigned int width = togl->Width, height = togl->Height;
#if defined(TOGL_X11)
Display *dpy = Tk_Display(togl->TkWin);
int scrnum = Tk_ScreenNumber(togl->TkWin);
if (strstr(glXQueryServerString(dpy, scrnum, GLX_VERSION), "Mesa"))
using_mesa = True;
else
#endif /* TOGL_X11 */
using_mesa = False;
/* I don't use Pixmap do drawn into, because the code should link with Mesa
* libraries and OpenGL libraries, and the which library we use at run time
* should not matter, but the name of the calls differs one from another:
* MesaGl: glXCreateGLXPixmapMESA( dpy, vi, eps_pixmap,
* Tk_Colormap(togl->TkWin)) OpenGl: glXCreateGLXPixmap( dpy, vi,
* eps_pixmap); instead of this I read direct from back buffer of the
* screeen. */
#if 0
eps_pixmap = XCreatePixmap(dpy, win, width, height, vi->depth);
if (using_mesa)
eps_glxpixmap =
glXCreateGLXPixmapMESA(dpy, vi, eps_pixmap,
Tk_Colormap(togl->TkWin));
else
eps_glxpixmap = glXCreateGLXPixmap(dpy, vi, eps_pixmap);
glXMakeCurrent(dpy, eps_glxpixmap, togl->GlCtx);
user_redraw();
#endif
if (!togl->RgbaFlag) {
#if defined(TOGL_WGL)
/* Due to the lack of a unique inverse mapping from the frame buffer to
* the logical palette we need a translation map from the complete
* logical palette. */
{
int n, i;
TkWinColormap *cmap = (TkWinColormap *) Tk_Colormap(togl->TkWin);
LPPALETTEENTRY entry =
malloc(togl->EpsMapSize * sizeof (PALETTEENTRY));
n = GetPaletteEntries(cmap->palette, 0, togl->EpsMapSize, entry);
for (i = 0; i < n; i++) {
togl->EpsRedMap[i] = (GLfloat) (entry[i].peRed / 255.0);
togl->EpsGreenMap[i] = (GLfloat) (entry[i].peGreen / 255.0);
togl->EpsBlueMap[i] = (GLfloat) (entry[i].peBlue / 255.0);
}
free(entry);
}
#endif /* TOGL_WGL */
glPixelMapfv(GL_PIXEL_MAP_I_TO_R, togl->EpsMapSize, togl->EpsRedMap);
glPixelMapfv(GL_PIXEL_MAP_I_TO_G, togl->EpsMapSize, togl->EpsGreenMap);
glPixelMapfv(GL_PIXEL_MAP_I_TO_B, togl->EpsMapSize, togl->EpsBlueMap);
}
/* user_redraw(); */
user_redraw(togl); /* changed by GG */
/* glReadBuffer( GL_FRONT); */
/* by default it read GL_BACK in double buffer mode */
glFlush();
retval = generateEPS(filename, inColor, width, height);
#if 0
glXMakeCurrent(dpy, win, togl->GlCtx);
glXDestroyGLXPixmap(dpy, eps_glxpixmap);
XFreePixmap(dpy, eps_pixmap);
#endif
return retval;
}
/*
* Full screen stereo for SGI graphics
* Contributed by Ben Evans (Ben.Evans@anusf.anu.edu.au)
* This code was based on SGI's /usr/share/src/OpenGL/teach/stereo
*/
#if defined(__sgi)
static struct stereoStateRec
{
Bool useSGIStereo;
Display *currentDisplay;
Window currentWindow;
GLXContext currentContext;
GLenum currentDrawBuffer;
int currentStereoBuffer;
Bool enabled;
char *stereoCommand;
char *restoreCommand;
} stereo;
/* call instead of glDrawBuffer */
void
Togl_OldStereoDrawBuffer(GLenum mode)
{
if (stereo.useSGIStereo) {
stereo.currentDrawBuffer = mode;
switch (mode) {
case GL_FRONT:
case GL_BACK:
case GL_FRONT_AND_BACK:
/*
** Simultaneous drawing to both left and right buffers isn't
** really possible if we don't have a stereo capable visual.
** For now just fall through and use the left buffer.
*/
case GL_LEFT:
case GL_FRONT_LEFT:
case GL_BACK_LEFT:
stereo.currentStereoBuffer = STEREO_BUFFER_LEFT;
break;
case GL_RIGHT:
case GL_FRONT_RIGHT:
stereo.currentStereoBuffer = STEREO_BUFFER_RIGHT;
mode = GL_FRONT;
break;
case GL_BACK_RIGHT:
stereo.currentStereoBuffer = STEREO_BUFFER_RIGHT;
mode = GL_BACK;
break;
default:
break;
}
if (stereo.currentDisplay && stereo.currentWindow) {
glXWaitGL(); /* sync with GL command stream before calling X
*/
XSGISetStereoBuffer(stereo.currentDisplay,
stereo.currentWindow, stereo.currentStereoBuffer);
glXWaitX(); /* sync with X command stream before calling GL
*/
}
}
glDrawBuffer(mode);
}
/* call instead of glClear */
void
Togl_OldStereoClear(GLbitfield mask)
{
GLenum drawBuffer;
if (stereo.useSGIStereo) {
drawBuffer = stereo.currentDrawBuffer;
switch (drawBuffer) {
case GL_FRONT:
Togl_OldStereoDrawBuffer(GL_FRONT_RIGHT);
glClear(mask);
Togl_OldStereoDrawBuffer(drawBuffer);
break;
case GL_BACK:
Togl_OldStereoDrawBuffer(GL_BACK_RIGHT);
glClear(mask);
Togl_OldStereoDrawBuffer(drawBuffer);
break;
case GL_FRONT_AND_BACK:
Togl_OldStereoDrawBuffer(GL_RIGHT);
glClear(mask);
Togl_OldStereoDrawBuffer(drawBuffer);
break;
case GL_LEFT:
case GL_FRONT_LEFT:
case GL_BACK_LEFT:
case GL_RIGHT:
case GL_FRONT_RIGHT:
case GL_BACK_RIGHT:
default:
break;
}
}
glClear(mask);
}
static void
oldStereoMakeCurrent(Display *dpy, Window win, GLXContext ctx)
{
if (dpy && (dpy != stereo.currentDisplay)) {
int event, error;
/* Make sure new Display supports SGIStereo */
if (XSGIStereoQueryExtension(dpy, &event, &error) == False) {
dpy = NULL;
}
}
if (dpy && win && (win != stereo.currentWindow)) {
/* Make sure new Window supports SGIStereo */
if (XSGIQueryStereoMode(dpy, win) == X_STEREO_UNSUPPORTED) {
win = None;
}
}
if (ctx && (ctx != stereo.currentContext)) {
GLint drawBuffer;
glGetIntegerv(GL_DRAW_BUFFER, &drawBuffer);
Togl_OldStereoDrawBuffer((GLenum) drawBuffer);
}
stereo.currentDisplay = dpy;
stereo.currentWindow = win;
stereo.currentContext = ctx;
}
/* call before using stereo */
static void
oldStereoInit(Togl *togl, int stereoEnabled)
{
stereo.useSGIStereo = stereoEnabled;
stereo.currentDisplay = NULL;
stereo.currentWindow = None;
stereo.currentContext = NULL;
stereo.currentDrawBuffer = GL_NONE;
stereo.currentStereoBuffer = STEREO_BUFFER_NONE;
stereo.enabled = False;
}
#endif /* __sgi STEREO */
void
Togl_StereoFrustum(GLfloat left, GLfloat right, GLfloat bottom, GLfloat top,
GLfloat zNear, GLfloat zFar, GLfloat eyeDist, GLfloat eyeOffset)
{
GLfloat eyeShift = (eyeDist - zNear) * (eyeOffset / eyeDist);
glFrustum(left + eyeShift, right + eyeShift, bottom, top, zNear, zFar);
glTranslatef(-eyeShift, 0, 0);
}
#ifdef TOGL_AGL_CLASSIC
/* needed to make shared library on Mac with CodeWarrior; should be overridden
* by user app */
/*
* int main(int argc, char *argv[]) { return -1; } */
/* the following code is borrowed from tkMacAppInit.c */
/*
*----------------------------------------------------------------------
*
* MacintoshInit --
*
* This procedure calls Mac specific initilization calls. Most of
* these calls must be made as soon as possible in the startup
* process.
*
* Results:
* Returns TCL_OK if everything went fine. If it didn't the
* application should probably fail.
*
* Side effects:
* Inits the application.
*
*----------------------------------------------------------------------
*/
int
Togl_MacInit(void)
{
int i;
long result, mask = 0x0700; /* mask = system 7.x */
# if GENERATING68K && !GENERATINGCFM
SetApplLimit(GetApplLimit() - (TK_MAC_68K_STACK_GROWTH));
# endif
MaxApplZone();
for (i = 0; i < 4; i++) {
(void) MoreMasters();
}
/*
* Tk needs us to set the qd pointer it uses. This is needed
* so Tk doesn't have to assume the availablity of the qd global
* variable. Which in turn allows Tk to be used in code resources.
*/
tcl_macQdPtr = &qd;
/*
* If appearance is present, then register Tk as an Appearance client
* This means that the mapping from non-Appearance to Appearance cdefs
* will be done for Tk regardless of the setting in the Appearance
* control panel.
*/
if (TkMacHaveAppearance()) {
RegisterAppearanceClient();
}
InitGraf(&tcl_macQdPtr->thePort);
InitFonts();
InitWindows();
InitMenus();
InitDialogs((long) NULL);
InitCursor();
/*
* Make sure we are running on system 7 or higher
*/
if ((NGetTrapAddress(_Gestalt, ToolTrap) ==
NGetTrapAddress(_Unimplemented, ToolTrap))
|| (((Gestalt(gestaltSystemVersion, &result) != noErr)
|| (result < mask)))) {
panic("Tcl/Tk requires System 7 or higher.");
}
/*
* Make sure we have color quick draw
* (this means we can't run on 68000 macs)
*/
if (((Gestalt(gestaltQuickdrawVersion, &result) != noErr)
|| (result < gestalt32BitQD13))) {
panic("Tk requires Color QuickDraw.");
}
FlushEvents(everyEvent, 0);
SetEventMask(everyEvent);
Tcl_MacSetEventProc(TkMacConvertEvent);
return TCL_OK;
}
int
Togl_MacSetupMainInterp(Tcl_Interp *interp)
{
TkMacInitAppleEvents(interp);
TkMacInitMenus(interp);
return TCL_OK;
}
#endif /* TOGL_AGL_CLASSIC */
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