x11.c

支持数字元件仿真的SPICE插件

/*
	$Header: //pepper/atesse_spice/spice3/FTE/RCS/x11.c,v 1.3 92/06/26 15:38:04 bill Exp $
	Copyright 1988 Jeffrey M. Hsu

	X11 drivers.

*/

#include "prefix.h"

#ifdef GI_X11

#include <sys/time.h>

#include "FTEgraph.h"
#ifndef CMS
#include "FTEdbgraph.h"
#else  /* CMS */
#include "FTEdbgra.h"
#endif /* CMS */
#ifndef CMS
#include "FTEdevice.h"
#else  /* CMS */
#include "FTEdevic.h"
#endif /* CMS */
#include "FTEinput.h"

#include "CPdefs.h"
#include "FTEdefs.h"

/* gtri - begin - Update include files for X11 R4+ */
#define XAW_BC
#include <IntrinsicP.h>
#include <Xatom.h>
#include <StringDefs.h>
#include <Xutil.h>
#include <cursorfont.h>
#include <Box.h>
#include <Command.h>
#include <Form.h>
#include <Shell.h>
/* gtri - end - Update include files for X11 R4+ */

#ifdef DEBUG
extern int _Xdebug;
#endif

/* forward declarations */
extern void handlebuttonev(), handlekeypressed(), killwin(), hardcopy(),
	    redraw(), resize();
int errorhandler();

/* X dependent default parameters */
#define DEF_FONT "6x10"
#define NUMLINESTYLES 8
#define NXPLANES 5      /* note: What is this used for? */
#define BOXSIZE 30      /* initial size of bounding box for zoomin */

typedef struct {
	Window window;
	Widget shell, form, view, buttonbox, buttons[2];
	XFontStruct *font;
	GC gc;
	int lastx, lasty;   /* used in X_DrawLine */
	int lastlinestyle;  /* used in X_DrawLine */
} X11devdep;

#define DEVDEP(g) (*((X11devdep *) (g)->devdep))

static Display *display;
static GC xorgc;
static char *xlinestyles[NUMLINESTYLES] = {	/* test patterns XXX */
	"\001\001\001\001",	/* solid */
	"\001\003\001\003",	/* spaced dots */
	"\001\002\001\002",	/* dots */
	"\003\003\003\003",	/* shortdash */
	"\001\004\006\004",	/* dots longdash */
	"\007\007\007\007",	/* longdash */
	"\001\004\004\004",	/* dots shortdash */
	"\003\003\007\003",	/* short/longdash */
};
static Widget toplevel;
static Bool noclear = False;

static GRAPH *lasthardcopy; /* graph user selected */
#ifdef notdef
static Bool KEYwaiting;     /* if user typed something */
#endif

X11_Init()
{

	char buf[512];
	char *displayname;

	XGCValues gcvalues;

	/* grrr, Xtk forced contortions */
	char *argv[2];
	int argc = 2;

	if (cp_getvar("display", VT_STRING, buf)) {
	  displayname = buf;
	} else if (!(displayname = getenv("DISPLAY"))) {
	  internalerror("Can't open X display.");
	  return (1);
	}

#ifdef DEBUG
	_Xdebug = 1;
#endif

	argv[0] = "nutmeg";
	argv[1] = displayname;
/*
	argv[2] = "-geometry";
	argv[3] = "=1x1+2+2";
*/

	/* initialize X toolkit */
	toplevel = XtInitialize("nutmeg", "Nutmeg", NULL, 0, &argc, argv);

	display = XtDisplay(toplevel);

#ifdef notdef
	/* note: set up input sources and handlers for Xt */
	XtAddInput(fileno(stdin), XtInputReadMask,
	        keyhandler, NULL);
#endif

/* note: don't realize the top level widget */

	gcvalues.function = GXxor;
	gcvalues.line_width = 1;
	/* we intend to xor */
	gcvalues.foreground = WhitePixel(display, DefaultScreen(display));
	gcvalues.background = BlackPixel(display, DefaultScreen(display));
	xorgc = XCreateGC(display, DefaultRootWindow(display),
	        GCLineWidth | GCFunction | GCForeground | GCBackground,
	        &gcvalues);

	/* set correct information */
	dispdev->numlinestyles = NUMLINESTYLES;
	dispdev->numcolors = NUMCOLORS;

	dispdev->width = DisplayWidth(display, DefaultScreen(display));
	dispdev->height = DisplayHeight(display, DefaultScreen(display));

	/* we don't want non-fatal X errors to call exit */
	XSetErrorHandler(errorhandler);


	return (0);

}

int
errorhandler(display, errorev)
Display *display;
XErrorEvent *errorev;
{
	XGetErrorText(display, errorev->error_code, ErrorMessage, 1024);
	externalerror(ErrorMessage);
	return;
}

/* Recover from bad NewViewPort call. */
#define RECOVERNEWVIEWPORT()    free((char *) graph);\
	            graph = (GRAPH *) NULL; 
	    /* need to do this or else DestroyGraph will free it again */

/* NewViewport is responsible for filling in graph->viewport */
X11_NewViewport(graph)
GRAPH *graph;
{

	char geometry[32], defaultgeometry[32];
	char fontname[64];
	Cursor cursor;
	XGCValues gcvalues;

	static Arg viewargs[] = {
	    { XtNresizable, (XtArgVal) TRUE },
	    { XtNwidth, (XtArgVal) 300 },
	    { XtNheight, (XtArgVal) 300 },
	};

/*
	static Arg formargs[] = {
	    { NULL, (XtArgVal) NULL },
	};
*/

	Arg bboxargs[1];

	Arg buttonargs[1];

	graph->devdep = calloc(1, sizeof(X11devdep));

	/* set up new shell */
	DEVDEP(graph).shell = XtCreateApplicationShell("shell",
	        topLevelShellWidgetClass, NULL, 0);

	/* set up form widget */
	DEVDEP(graph).form = XtCreateManagedWidget("some name",
	    formWidgetClass, DEVDEP(graph).shell, NULL, 0);

	/* set up viewport */
/* note: allow user to specify geometry XXX */
	DEVDEP(graph).view = XtCreateManagedWidget("viewport", widgetClass,
	    DEVDEP(graph).form, viewargs, XtNumber(viewargs));

/* note: what about error handling?  What if XtCreateWidget fails? XXX */

	/* set up button box */
	XtSetArg(bboxargs[0], XtNfromHoriz, DEVDEP(graph).view);
	DEVDEP(graph).buttonbox = XtCreateManagedWidget("buttonbox",
	    boxWidgetClass, DEVDEP(graph).form, bboxargs, 1);

	/* set up buttons */

	XtSetArg(buttonargs[0], XtNlabel, "quit");
	DEVDEP(graph).buttons[0] = XtCreateManagedWidget("quit",
	    commandWidgetClass, DEVDEP(graph).buttonbox,
	    buttonargs, 1);
	XtAddCallback(DEVDEP(graph).buttons[0], XtNcallback, killwin, graph);

	buttonargs[0].value = (XtArgVal) "hardcopy";
	DEVDEP(graph).buttons[1] = XtCreateManagedWidget("quit",
	    commandWidgetClass, DEVDEP(graph).buttonbox,
	    buttonargs, 1);
	XtAddCallback(DEVDEP(graph).buttons[1], XtNcallback, hardcopy, graph);

	/* set up fonts */
	if (!cp_getvar("font", VT_STRING, fontname)) {
	  (void) strcpy(fontname, DEF_FONT);
	}

	if (!(DEVDEP(graph).font = XLoadQueryFont(display, fontname))) {
	  sprintf(ErrorMessage, "can't open font %s", fontname);
	  internalerror(ErrorMessage);
	  RECOVERNEWVIEWPORT();
	  return(1);
	}
	graph->fontwidth = DEVDEP(graph).font->max_bounds.rbearing -
	        DEVDEP(graph).font->min_bounds.lbearing;
	graph->fontheight = DEVDEP(graph).font->max_bounds.ascent +
	        DEVDEP(graph).font->max_bounds.descent;

	XtRealizeWidget(DEVDEP(graph).shell);

	DEVDEP(graph).window = XtWindow(DEVDEP(graph).view);
	gcvalues.line_width = 1;
	gcvalues.cap_style = CapNotLast;
	DEVDEP(graph).gc = XCreateGC(display, DEVDEP(graph).window,
	        GCLineWidth | GCCapStyle, &gcvalues);

	/* should absolute.positions really be shell.pos? */
	graph->absolute.xpos = DEVDEP(graph).view->core.x;
	graph->absolute.ypos = DEVDEP(graph).view->core.y;
	graph->absolute.width = DEVDEP(graph).view->core.width;
	graph->absolute.height = DEVDEP(graph).view->core.height;

	initlinestyles();
	initcolors(graph);

	/* set up cursor */
	cursor = XCreateFontCursor(display, XC_left_ptr);
	XDefineCursor(display, DEVDEP(graph).window, cursor);

#ifdef notdef
	static String table =
	    "<Configure>:resize()\n\
	    <";
	translations = XtParseTranslationTable(table);
	XtAugmentTranslations(DEVDEP(graph).view, translations);
#endif

	/* set up input events
	    Why bother with event translations? */
	XtAddEventHandler(DEVDEP(graph).view, ButtonPressMask, FALSE,
	        handlebuttonev, graph);
/*  XtAddEventHandler(DEVDEP(graph).view, ButtonMotionMask, FALSE,
	        handlemotionev, graph); */
	XtAddEventHandler(DEVDEP(graph).view, KeyPressMask, FALSE,
	        handlekeypressed, graph);
	XtAddEventHandler(DEVDEP(graph).view, StructureNotifyMask, FALSE,
	        resize, graph);
	XtAddEventHandler(DEVDEP(graph).view, ExposureMask, FALSE,
	        redraw, graph);

	return (0);
}

static
initlinestyles()
{

	int i;

	if (XDisplayPlanes(display, DefaultScreen(display)) > 1) {
	  /* Dotted lines are a distraction when we have colors. */
	  for (i = 2; i < NUMLINESTYLES; i++) {
	    xlinestyles[i] = xlinestyles[0];
	  }
	}

	return;
}

static
initcolors(graph)
GRAPH *graph;
{

	int numdispplanes = DisplayPlanes(display, DefaultScreen(display));
	int i;
	static char *colornames[] = {   "white",    /* white */
	                "black",
	                "red",
	                "blue",
	                "orange",
	                "green",
	                "pink",
	                "brown",
	                "khaki",
	                "plum",
	                "orchid",
	                "violet",
	                "maroon",
	                "turquoise",
	                "sienna",
	                "coral",
	                "cyan",
	                "magenta",
	                "gold",
	                "yellow",
	                ""
	            } ;
	XColor visualcolor, exactcolor;
	char buf[BSIZE], colorstring[BSIZE];
	int xmaxcolors = NUMCOLORS; /* note: can we get rid of this? */

	if (numdispplanes == 1) {
	  /* black and white */
	  graph->colors[0] = WhitePixel(display, DefaultScreen(display));
	  graph->colors[1] = BlackPixel(display, DefaultScreen(display));
	  xmaxcolors = 2;
	  return;
	} else if (numdispplanes < NXPLANES) {
	  xmaxcolors = 1;
	  while (numdispplanes-- > 1)
	    xmaxcolors *= 2;
	}
	for (i = 0; i < xmaxcolors; i++) {
	  (void) sprintf(buf, "color%d", i);
	  if (!cp_getvar(buf, VT_STRING, colorstring))
	    (void) strcpy(colorstring, colornames[i]);
	  if (!XAllocNamedColor(display,
	        DefaultColormap(display, DefaultScreen(display)),
	        colorstring, &visualcolor, &exactcolor)) {
	    (void) sprintf(ErrorMessage,
	      "can't get color %s\n", colorstring);
	    externalerror(ErrorMessage);
	    graph->colors[i] = i ? BlackPixel(display, DefaultScreen(display))
	                : WhitePixel(display, DefaultScreen(display));
	    continue;
	  }
	  graph->colors[i] = visualcolor.pixel;
	}

	return;

}

/* This routine closes the X connection.
	It is not to be called for finishing a graph. */
X11_Close()
{

	XCloseDisplay(display);

}

X11_DrawLine(x1, y1, x2, y2)
int x1, y1, x2, y2;
{

	XDrawLine(display, DEVDEP(currentgraph).window,
	        DEVDEP(currentgraph).gc,
	        x1, currentgraph->absolute.height - y1,
	        x2, currentgraph->absolute.height - y2);


}

/*ARGSUSED*/
X11_Arc(x0, y0, radius, theta1, theta2)
int x0, y0, radius;
double theta1, theta2;
{

	/* never used and not in previous code and XArc doesn't work,
	    so why bother? */

	internalerror("X11_Arc not implemented");

}

/* note: x and y are the LOWER left corner of text */
X11_Text(text, x, y)
char *text;
int x, y;
{

/* We specify text position by lower left corner, so have to adjust for
	X11's font nonsense. */

	XDrawString(display, DEVDEP(currentgraph).window,
	    DEVDEP(currentgraph).gc, x,
	    currentgraph->absolute.height
	        - (y + DEVDEP(currentgraph).font->max_bounds.descent),
	    text, strlen(text));

	/* note: unlike before, we do not save any text here */

}

/*ARGSUSED*/
X11_DefineColor(colorid, red, green, blue)
int colorid;
double red, green, blue;
{

	internalerror("X11_DefineColor not implemented.");

	return(0);

}


/*ARGSUSED*/
X11_DefineLinestyle(linestyleid, mask)
int linestyleid;
int mask;
{

	internalerror("X11_DefineLinestyle not implemented.");

}

X11_SetLinestyle(linestyleid)
int linestyleid;
{

	XGCValues values;

	if (currentgraph->linestyle != linestyleid) {

	  if ((linestyleid == 0) ||
		(DisplayPlanes(display, DefaultScreen(display)) > 1 &&
		linestyleid != 1)) {
	    /* solid if linestyle 0 or if has color,
				allow only one dashed linestyle */
	    values.line_style = LineSolid;
	  } else {
	    values.line_style = LineOnOffDash;
	  }
	  XChangeGC(display, DEVDEP(currentgraph).gc, GCLineStyle, &values);

	  currentgraph->linestyle = linestyleid;
	  XSetDashes(display, DEVDEP(currentgraph).gc, 0,
		xlinestyles[linestyleid], 4);

	}

}

X11_SetColor(colorid)
int colorid;
{

	currentgraph->currentcolor = colorid;
	XSetForeground(display, DEVDEP(currentgraph).gc,