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X11.c
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X11.c
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/*
* VOGL/VOGLE driver for X11.
*
* Define VOGLE if this driver is really for the VOGLE Libarary.
*
*/
#undef VOGLE
#include <stdio.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#ifdef VOGLE
#include "vogle.h"
static char *me = "vogle";
#define LARGEFONT "-adobe-courier-medium-r-normal--24-240-75-75-m-150-iso8859-1"
#define SMALLFONT "-adobe-courier-medium-r-normal--8-100-75-75-m-60-iso8859-1"
#else
#include "vogl.h"
static char *me = "vogl";
#define LARGEFONT "9x15bold"
#define SMALLFONT "6x13bold"
#endif
#define MIN(x,y) ((x) < (y) ? (x) : (y))
#define MAX(x,y) ((x) > (y) ? (x) : (y))
#define CMAPSIZE 256
#define EV_MASK KeyPressMask|ButtonReleaseMask|ExposureMask|ButtonPressMask|PointerMotionMask
static int maxw = -1, maxh = -1;
static Window winder;
static Display *display;
static int screen;
static unsigned long carray[CMAPSIZE];
static Colormap colormap;
static Drawable theDrawable = -1;
static GC theGC;
static XGCValues theGCvalues;
static Pixmap bbuf; /* Back buffer pixmap */
static int back_used = 0; /* Have we backbuffered ? */
static XFontStruct *font_id = (XFontStruct *)NULL;
XEvent event;
static unsigned long colour;
static unsigned int h, w;
static char *smallf, *largef;
static char use_toolkit_win = 0;
/*
* vo_xt_set_win
*
* Just sets the drawable to the partucular window.
*/
vo_xt_set_win(dis, win, xw, xh)
Display *dis;
Drawable win;
int xw, xh;
{
int backb;
backb = (theDrawable == bbuf);
winder = win;
vdevice.sizeX = vdevice.sizeY = MIN(xh, xw);
vdevice.sizeSx = xw;
vdevice.sizeSy = xh;
if (xw > maxw || xh > maxh) {
if (back_used) {
back_used = 0;
XFreePixmap(display, bbuf);
X11_backbuf();
}
}
display = dis;
if (backb)
theDrawable = bbuf;
else
theDrawable = win;
return(1);
}
/*
* vo_xt_window
*
* Tells VOGL/VOGLE to use a window from an X11 toolkit (eg xview)
* and not to make it's own window.
*/
vo_xt_window(dis, win, xw, xh)
Display *dis;
Window win;
int xw, xh;
{
int backb, i, depth;
backb = (theDrawable == bbuf);
display = dis;
winder = win;
screen = DefaultScreen(display);
colormap = DefaultColormap(display, screen);
depth = vdevice.depth = DefaultDepth(display, screen);
theDrawable = winder;
use_toolkit_win = 1;
w = xw;
h = xh;
/*
* Set our standard colors...
*/
if (vdevice.depth == 1) {
/*
* Black and white - anything that's not black is white.
*/
carray[0] = BlackPixel(display, screen);
for (i = 1; i < CMAPSIZE; i++)
carray[i] = WhitePixel(display, screen);
} else {
/*
* Color, try to get our colors close to what's in the
* default colormap.
*/
X11_mapcolor(0, 0, 0, 0);
X11_mapcolor(1, 255, 0, 0);
X11_mapcolor(2, 0, 255, 0);
X11_mapcolor(3, 255, 255, 0);
X11_mapcolor(4, 0, 0, 255);
X11_mapcolor(5, 255, 0, 255);
X11_mapcolor(6, 0, 255, 255);
X11_mapcolor(7, 255, 255, 255);
}
if ((smallf = XGetDefault(display, me, "smallfont")) == (char *)NULL)
smallf = SMALLFONT;
if ((largef = XGetDefault(display, me, "largefont")) == (char *)NULL)
largef = LARGEFONT;
/*
* Create Graphics Context and Drawable
*/
theGC = XDefaultGC(display, screen);
theGCvalues.graphics_exposures = False;
theGCvalues.cap_style = CapButt;
XChangeGC(display, theGC, GCGraphicsExposures|GCCapStyle, &theGCvalues);
X11_color(0);
vdevice.sizeX = vdevice.sizeY = MIN(xh, xw);
vdevice.sizeSx = xw;
vdevice.sizeSy = xh;
if (back_used && (xw > maxw || xh > maxh)) {
back_used = 0;
XFreePixmap(display, bbuf);
X11_backbuf();
}
if (backb)
theDrawable = bbuf;
else
theDrawable = win;
#ifndef VOGLE
vdevice.devname = "X11";
#endif
return(1);
}
/*
* vo_xt_win_size
*
* If the X toolkit has changed the window size, then
* you might wish to call this routine to tell vogl/vogle about it.
*/
vo_xt_win_size(xw, xh)
int xw, xh;
{
char backb;
w = xw;
h = xh;
vdevice.sizeX = vdevice.sizeY = MIN(h, w);
vdevice.sizeSx = w;
vdevice.sizeSy = h;
backb = (theDrawable == bbuf);
if (back_used) {
/* Have to re allocate the back buffer */
XFreePixmap(display, bbuf);
bbuf = XCreatePixmap(display,
(Drawable)winder,
(unsigned int)vdevice.sizeSx + 1,
(unsigned int)vdevice.sizeSy + 1,
(unsigned int)vdevice.depth
);
}
if (backb)
theDrawable = (Drawable)bbuf;
}
/*
* X11_init
*
* initialises X11 display.
*/
X11_init()
{
int i;
int x, y, prefx, prefy, prefxs, prefys;
unsigned int bw, depth, mask;
Window rootw, childw;
char *av[2], name[128], *geom;
XSetWindowAttributes theWindowAttributes;
XWindowAttributes retWindowAttributes;
XSizeHints theSizeHints;
unsigned long theWindowMask;
XWMHints theWMHints;
if (use_toolkit_win)
return(1);
av[0] = me;
av[1] = (char *)NULL;
if ((display = XOpenDisplay((char *)NULL)) == (Display *)NULL) {
fprintf(stderr,"%s: X11_init: can't connect to X server\n", me);
exit(1);
}
screen = DefaultScreen(display);
winder = RootWindow(display, screen);
colormap = DefaultColormap(display, screen);
depth = vdevice.depth = DefaultDepth(display, screen);
/*
* Set our standard colors...
*/
if (vdevice.depth == 1) {
/*
* Black and white - anything that's not black is white.
*/
carray[0] = BlackPixel(display, screen);
for (i = 1; i < CMAPSIZE; i++)
carray[i] = WhitePixel(display, screen);
} else {
/*
* Color, try to get our colors close to what's in the
* default colormap.
*/
X11_mapcolor(0, 0, 0, 0);
X11_mapcolor(1, 255, 0, 0);
X11_mapcolor(2, 0, 255, 0);
X11_mapcolor(3, 255, 255, 0);
X11_mapcolor(4, 0, 0, 255);
X11_mapcolor(5, 255, 0, 255);
X11_mapcolor(6, 0, 255, 255);
X11_mapcolor(7, 255, 255, 255);
}
/*
getprefposandsize(&prefx, &prefy, &prefxs, &prefys);
*/
prefx=0;
prefy=0;
prefxs=512;
prefys=256;
/*
* NEED TO USE XGRABPOINTER here???
*/
XQueryPointer(display, winder, &rootw, &childw, &x, &y, &x, &y, &mask);
if (childw == None)
childw = rootw;
/*
if (!XGetWindowAttributes(display, childw, &retWindowAttributes)) {
fprintf(stderr,"Can't get window attributes.");
exit(1);
}
x = retWindowAttributes.x;
y = retWindowAttributes.y;
w = retWindowAttributes.width;
h = retWindowAttributes.height;
bw = retWindowAttributes.border_width;
depth = vdevice.depth = retWindowAttributes.depth;
XTranslateCoordinates(display,
childw, retWindowAttributes.root,
0, 0,
&x, &y,
&rootw
);
*/
XGetGeometry(display, childw, &rootw, &x, &y, &w, &h, &bw, &depth);
theWindowAttributes.backing_store = WhenMapped;
theWindowAttributes.save_under = True;
theWindowAttributes.border_pixel = carray[1];
theWindowAttributes.background_pixel=WhitePixel(display,screen);
/*
* See if there is something in the .Xdefaults file regarding
* VOGL/VOGLE.
*/
if ((smallf = XGetDefault(display, me, "smallfont")) == (char *)NULL)
smallf = SMALLFONT;
if ((largef = XGetDefault(display, me, "largefont")) == (char *)NULL)
largef = LARGEFONT;
geom = XGetDefault(display, me, "Geometry");
if (geom != (char *)NULL) {
mask = XParseGeometry(geom, &x, &y, &w, &h);
if (mask & XValue)
theSizeHints.flags |= USPosition;
if (mask & YValue)
theSizeHints.flags |= USPosition;
if (mask & WidthValue)
theSizeHints.flags |= USSize;
if (mask & HeightValue)
theSizeHints.flags |= USSize;
if (mask & XNegative)
x = DisplayWidth(display, screen) - 2*bw - w + x;
if (mask & YNegative)
y = DisplayHeight(display, screen) - 2*bw - h + y;
} else
theSizeHints.flags = PPosition | PSize;
if (prefx > -1) {
x = prefx;
y = prefy;
}
if (prefxs > -1) {
w = prefxs;
h = prefys;
}
if (bw == 0)
bw = 4;
x -= bw;
y -= bw;
if (x <= 0)
x = 0;
if (y <= 0)
y = 0;
w -= 4 * bw;
h -= 4 * bw;
theWindowMask = CWBorderPixel|CWBackingStore |CWBackPixel;
winder = XCreateWindow(display,
winder,
x, y,
w, h,
bw,
(int)vdevice.depth,
InputOutput,
CopyFromParent,
theWindowMask,
&theWindowAttributes
);
theSizeHints.x = x;
theSizeHints.y = y;
theSizeHints.width = w;
theSizeHints.height = h;
#ifndef VOGLE
if (vdevice.wintitle)
strcpy(name, vdevice.wintitle);
else
sprintf(name, "%s %d (win id 0x%x)", me, getpid(), winder);
#else
sprintf(name, "%s %d (win id 0x%x)", me, getpid(), winder);
#endif
XSetStandardProperties(display,
winder,
name,
name,
None,
av,
1,
&theSizeHints
);
theWMHints.initial_state = NormalState;
theWMHints.input = True;
theWMHints.flags = StateHint | InputHint;
XSetWMHints(display, winder, &theWMHints);
XSelectInput(display, winder, EV_MASK);
theDrawable = (Drawable)winder;
/*
* Create Graphics Context and Drawable
*/
theGC = XDefaultGC(display, screen);
theGCvalues.graphics_exposures = False;
theGCvalues.cap_style = CapButt;
XChangeGC(display, theGC, GCGraphicsExposures|GCCapStyle, &theGCvalues);
theDrawable = (Drawable)winder;
X11_color(0);
XMapRaised(display, winder);
XFlush(display);
/*
* Wait for Exposure event.
*/
do {
XNextEvent(display, &event);
} while (event.type != Expose && event.type != MapNotify);
/*
* Set the input Focus to us.
if (prefx == -1 && prefxs == -1)
XSetInputFocus(display, winder, RevertToParent, CurrentTime);
*/
/*
* Let VOGL/VOGLE know about the window size.
* (We may have been resized..... )
*/
if (!XGetWindowAttributes(display, winder, &retWindowAttributes)) {
fprintf(stderr,"Can't get window attributes.");
exit(1);
}
x = retWindowAttributes.x;
y = retWindowAttributes.y;
w = retWindowAttributes.width;
h = retWindowAttributes.height;
XTranslateCoordinates(display,
winder, retWindowAttributes.root,
0, 0,
&x, &y,
&rootw
);
vdevice.sizeX = vdevice.sizeY = MIN(h, w);
vdevice.sizeSx = w;
vdevice.sizeSy = h;
if (back_used && (maxw < w || maxh < h)) {
back_used = 0;
X11_backbuf();
}
return(1);
}
/*
* X11_exit
*
* cleans up before returning the window to normal.
*/
X11_exit()
{
if (back_used)
XFreePixmap(display, bbuf);
if (font_id != (XFontStruct *)NULL)
XFreeFont(display, font_id);
font_id = (XFontStruct *)NULL;
if (use_toolkit_win)
return(1);
XDestroyWindow(display, winder);
XSync(display, 0);
XCloseDisplay(display);
return(1);
}
X11_grap()
{
XGrabServer(display);
}
/*
X11_move
moves the graphical pointer to new location
needs for draw,strings
*/
X11_move(x,y)
int x,y;
{
vdevice.cpVx=x;
vdevice.cpVy=y;
}
/*
* X11_draw
*
* draws a line from the current graphics position to (x, y).
*
* Note: (0, 0) is defined as the top left of the window in X (easy
* to forget).
*/
X11_draw(x, y)
int x, y;
{
XDrawLine(display,
theDrawable,
theGC,
vdevice.cpVx, vdevice.sizeSy - vdevice.cpVy,
x, vdevice.sizeSy - y
);
X11_move(x,y);
if (vdevice.sync)
XSync(display, 0);
}
X11_pnt(x, y)
int x, y;
{
XDrawPoint(display,
theDrawable,
theGC,
x, vdevice.sizeSy - y
);
if (vdevice.sync)
XSync(display, 0);
}
/*
* X11_getkey
*
* grab a character from the keyboard - blocks until one is there.
*/
int
X11_getkey()
{
char c;
do {
XNextEvent(display, &event);
if (event.type == KeyPress) {
if (XLookupString((XKeyEvent *)&event, &c, 1, NULL, NULL) > 0)
return((int)c);
else
return(0);
}
} while (event.type != KeyPress);
}
/*
* X11_checkkey
*
* Check if there has been a keyboard key pressed.
* and return it if there is.
*/
int
X11_checkkey()
{
char c;
if (!XCheckWindowEvent(display, winder, KeyPressMask, &event))
return(0);
if (event.type == KeyPress)
if (XLookupString((XKeyEvent *)&event, &c, 1, NULL, NULL) > 0)
return((int)c);
return(0);
}
/*
* X11_locator
*
* return the window location of the cursor, plus which mouse button,
* if any, is been pressed.
*/
int
X11_locator(wx, wy)
int *wx, *wy;
{
Window rootw, childw;
int x, y;
unsigned int mask;
do {
XNextEvent(display, &event);
printf("event %x \n",event.type);
if ((event.type == MotionNotify) || (event.type == ButtonPress) || (event.type == ButtonRelease) ) {
break;
}
} while ((event.type != MotionNotify) ||( event.type != ButtonPress) || (event.type != ButtonRelease) );
XQueryPointer(display, winder, &rootw, &childw, &x, &y, wx, wy, &mask);
printf("loc x %d y %d %x \n",*wx,*wy,mask>>8);
*wy = (int)vdevice.sizeSy - *wy;
mask= mask >> 8;
mask = mask & 7;
return(mask );
}
static int xo,yo,okk;
int X11_locator_change(int *wx,int *wy)
{
int ok;
here:
ok=X11_locator(wx,wy);
if((ok == okk) && (*wx==xo) &&( *wy == yo)) goto here;
xo=*wx;
yo=*wy;
okk=ok;
return ok;
}
#ifndef VOGLE
/*
* X11_clear
*
* Clear the screen (or current buffer )to current colour
*/
X11_clear()
{
/*XSetBackground(display, theGC, colour); */
XSetForeground(display, theGC, colour);
XFillRectangle(display,
theDrawable,
theGC,
0,
0,
(unsigned int)vdevice.sizeSx + 1,
(unsigned int)vdevice.sizeSy + 1
);
if (vdevice.sync)
XFlush(display);
}
#else
/*
* X11_clear
*
* Clear the screen (or current buffer )to current colour
*/
X11_clear()
{
unsigned int w = vdevice.maxVx - vdevice.minVx;
unsigned int h = vdevice.maxVy - vdevice.minVy;
/*XSetBackground(display, theGC, colour); */
XSetForeground(display, theGC, colour);
XFillRectangle(display,
theDrawable,
theGC,
vdevice.minVx,
vdevice.sizeSy - vdevice.maxVy,
w,
h
);
if (vdevice.sync)
XFlush(display);
}
#endif
/*
* X11_color
*
* set the current drawing color index.
*/
X11_color(ind)
int ind;
{
colour = carray[ind];
XSetForeground(display, theGC, colour);
}
/*
* X11_mapcolor
*
* change index i in the color map to the appropriate r, g, b, value.
*/
X11_mapcolor(i, r, g, b)
int i;
int r, g, b;
{
int stat;
XColor tmp;
if (i >= CMAPSIZE)
return(-1);
/*
* For Black and White.
* If the index is 0 and r,g,b != 0 then we are remapping black.
* If the index != 0 and r,g,b == 0 then we make it black.
*/
if (vdevice.depth == 1) {
if (i == 0 && (r != 0 || g != 0 || b != 0))
carray[i] = WhitePixel(display, screen);
else if (i != 0 && r == 0 && g == 0 && b == 0)
carray[i] = BlackPixel(display, screen);
} else {
tmp.red = (unsigned short)(r / 255.0 * 65535);
tmp.green = (unsigned short)(g / 255.0 * 65535);
tmp.blue = (unsigned short)(b / 255.0 * 65535);
tmp.flags = 0;
tmp.pixel = (unsigned long)i;
if ((stat = XAllocColor(display, colormap, &tmp)) == 0) {
fprintf(stderr, "XAllocColor failed (status = %d) %d\n", stat,i);
/*exit(1); */
}
carray[i] = tmp.pixel;
}
XFlush(display);
return(0);
}
/*
* X11_font
*
* Set up a hardware font. Return 1 on success 0 otherwise.
*
*/
X11_font(fontfile)
char *fontfile;
{
XGCValues xgcvals;
char *name = fontfile;
if (font_id != (XFontStruct *)NULL)
XFreeFont(display, font_id);
if (strcmp(fontfile, "small") == 0) {
if ((font_id = XLoadQueryFont(display, smallf)) == (XFontStruct *)NULL) {
fprintf(stderr, "%s X11.c couldn't open small font '%s'\n", me, smallf);
fprintf(stderr, "You'll have to redefine it....\n");
return(0);
} else
name = smallf;
} else if (strcmp(fontfile, "large") == 0) {
if ((font_id = XLoadQueryFont(display, largef)) == (XFontStruct *)NULL) {
fprintf(stderr, "%s X11.c couldn't open large font '%s'\n", me, largef);
fprintf(stderr, "You'll have to redefine it....\n");
return(0);
}
name = largef;
} else {
if ((font_id = XLoadQueryFont(display, fontfile)) == (XFontStruct *)NULL) {
fprintf(stderr, "%s X11.c couldn't open fontfile '%s'\n", me, fontfile);
return(0);
}
}
vdevice.hheight = font_id->max_bounds.ascent + font_id->max_bounds.descent;
vdevice.hwidth = font_id->max_bounds.width;
xgcvals.font = XLoadFont(display, name);
XChangeGC(display, theGC, GCFont, &xgcvals);
return(1);
}
/*
* X11_char
*
* outputs one char - is more complicated for other devices
*/
X11_char(c)
char c;
{
char *s = " ";
s[0] = c;
XDrawString(display, theDrawable, theGC, vdevice.cpVx, (int)(vdevice.sizeSy - vdevice.cpVy), s, 1);
if (vdevice.sync)
XFlush(display);
}
/*
* X11_string
*
* Display a string at the current drawing position.
*/
X11_string(s)
char s[];
{
XDrawString(display, theDrawable, theGC, vdevice.cpVx, (int)(vdevice.sizeSy - vdevice.cpVy), s, strlen(s));
if (vdevice.sync)
XFlush(display);
}
X11_string2(s)
char s[];
{
XDrawImageString(display, theDrawable, theGC, vdevice.cpVx, (int)(vdevice.sizeSy - vdevice.cpVy), s, strlen(s));
if (vdevice.sync)
XFlush(display);
}
/*
* X11_fill
*
* fill a polygon
*/
X11_fill(n, x, y)
int n, x[], y[];
{
char buf[BUFSIZ];
XPoint plist[128];
int i;
if (n > 128) {
printf("%s: more than 128 points in a polygon", me);
}
for (i = 0; i < n; i++) {
plist[i].x = x[i];
plist[i].y = vdevice.sizeSy - y[i];
}
XFillPolygon(display, theDrawable, theGC, plist, n, Nonconvex, CoordModeOrigin);
vdevice.cpVx = x[n-1];
vdevice.cpVy = y[n-1];
if (vdevice.sync)
XFlush(display);
}
/*
* X11_backbuf
*
* Set up double buffering by allocating the back buffer and
* setting drawing into it.
*/
int
X11_backbuf()
{
if (!back_used) {
bbuf = XCreatePixmap(display,
(Drawable)winder,
(unsigned int)vdevice.sizeSx + 1,
(unsigned int)vdevice.sizeSy + 1,
(unsigned int)vdevice.depth
);
maxw = MAX(vdevice.sizeSx + 1, maxw);
maxh = MAX(vdevice.sizeSy + 1, maxh);
}
theDrawable = (Drawable)bbuf;
back_used = 1;
return(1);
}
/*
* X11_swapbuf
*
* Swap the back and from buffers. (Really, just copy the
* back buffer to the screen).
*/
X11_swapbuf()
{
XCopyArea(display,
theDrawable,
winder,
theGC,
0, 0,
(unsigned int)vdevice.sizeSx + 1,
(unsigned int)vdevice.sizeSy + 1,
0, 0
);
XSync(display, 0);
}
/*
* X11_frontbuf
*
* Make sure we draw to the screen.
*/
X11_frontbuf()
{
theDrawable = (Drawable)winder;
}
/*
* Syncronise the display with what we think has been sent to it...
*/
X11_sync()
{
XSync(display, 0);
}
#undef VORTDUMP
#ifdef VORTDUMP
/*
* HACK
* Dump the contents of the current buffer to a VORT file....
* ONLY WORKS WITH 8Bit Drawables!
*/
#include "vort.h"
X11_dump_pixmap(filename, dx, dy, dw, dh)
char *filename;
int dx, dy, dw, dh;
{
XImage *ximage;
image *im;
unsigned char *line, *rm, *gm, *bm;
XColor *cols;
int i;
if (dw > vdevice.sizeSx || dw < 0)
dw = vdevice.sizeSx;
if (dh > vdevice.sizeSy || dh < 0)
dh = vdevice.sizeSy;
if (dx > vdevice.sizeSx || dx < 0)
dx = 0;
if (dy > vdevice.sizeSy || dy < 0)
dy = 0;
ximage = XGetImage(display,
theDrawable,
dx, dy,
(unsigned int)dw,
(unsigned int)dh,
AllPlanes,
ZPixmap
);
if (!ximage) {
fprintf(stderr, "X11_dump_pixmap: can't do XGetImage\n");
exit(1);
}