pfuetz@agd.fhg.de (02/26/91)
Submitted-by: pfuetz@agd.fhg.de
Posting-number: Volume 11, Issue 95
Archive-name: xstrek/part09
#!/bin/sh
# To unshare, sh or unshar this file
echo xstrek/gpr.c 1>&2
sed -e 's/^X//' > xstrek/gpr.c <<'E!O!F! xstrek/gpr.c'
X#include "gpr.h"
X
X/*
X I took the original code of Dan Lovinger, Dec, 1990, CMU and the code
X of Tood W Mummert, Dec 1990, CMU and hacked it in order to get it work
X with the game strek written by Justin S. Revenaugh Jul, 1987, MIT.
X
X I also added some comments about the original GPR routines so that any
X user of this package might get a small inside in what this routines
X are meant to do. This package tries to emulate the APOLLO GPR (Graphic
X Primitive routines) routines that are part of their OS (Domain OS)
X (AEGIS) version 9.5 or 9.7. I've included the include files for
X reference purposes, so that anyone trying to build a proper gpr2X
X library can see how the datatypes are defined.
X*/
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void cal_$decode_local_time (decoded_clock) */
X/* */
X/* output: */
X/* cal_$timedate_rec_t decoded_clock; */
X/* */
X/* ================================================================== */
X/* */
X/* Returns the local time in integer format ("year, month, day, hour, */
X/* minute, second"). */
X/* */
X/* ================================================================== */
X
Xvoid caldecodelocaltime_ (array)
X
Xshort int array[6];
X
X{
X time_t clock;
X struct tm *lt;
X
X
X
X (void) time(&clock);
X lt = localtime(&clock);
X array[0] = lt->tm_year + 1900;
X array[1] = lt->tm_mon + 1;
X array[2] = lt->tm_mday;
X array[3] = lt->tm_hour;
X array[4] = lt->tm_min;
X array[5] = lt->tm_sec;
X} /* caldecodelocaltime_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void cal_$float_clock (clock, float_seconds) */
X/* */
X/* input: */
X/* time_$clock_t clock; */
X/* */
X/* output: */
X/* double float_seconds; # this is 8 byte long */
X/* */
X/* ================================================================== */
X/* */
X/* Converts a system clock representation to the equivilent number of */
X/* seconds in double-precision floating-point format. Unlike */
X/* cal_$clock_to_sec this routine does not truncate the fractional */
X/* portion of the conversion. */
X/* */
X/* ================================================================== */
X
Xvoid calfloatclock_ (clock, floatclock)
X
Xshort int clock[3];
Xdouble *floatclock;
X
X{
X *floatclock = (double) (clock[0] * 65536) +
X (double) (clock[1]) +
X ((double) (clock [2]) / (1000000/4));
X
X/*
X *floatclock = ((((clock[0] * 65536) + clock[1]) * 65536) + clock[3])
X / 250000;
X*/
X} /* calfloatclock_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void cal_$get_local_time (clock) */
X/* */
X/* output: */
X/* time_$clock_t clock; */
X/* */
X/* ================================================================== */
X/* */
X/* Returns the current local time in system clock representation. */
X/* This is the number of 4-microsecond periods that have elapsed */
X/* since January 1, 1980, 00:00. */
X/* */
X/* ================================================================== */
X
Xvoid calgetlocaltime_ (clock)
X
Xshort int clock[3];
X
X{
X struct timeval tv;
X long tmp_micro;
X
X
X
X gettimeofday(&tv, 0);
X
X clock[0] = tv.tv_sec >> 16;
X clock[1] = tv.tv_sec & 0xffff;
X clock[2] = tv.tv_usec/4;
X
X/*
X tmp_micro = tv.tv_sec * 250000 + tv.tv_usec/4;
X
X clock[2] = tmp_micro & 0x000000ff;
X clock[1] = (tmp_micro & 0x0000ff00) >> 16;
X clock[0] = (tmp_micro & 0x00ff0000) >> 32;
X*/
X} /* calgetlocaltime_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void cal_$sec_to_clock (seconds, clock) */
X/* */
X/* input: */
X/* int seconds; # 4-byte integer */
X/* */
X/* output: */
X/* time_$clock_t clock; */
X/* */
X/* ================================================================== */
X/* */
X/* Converts seconds to system clock units. No overflow detection is */
X/* performed. */
X/* */
X/* ================================================================== */
X
Xvoid calsectoclock_ (seconds, clock)
X
Xint *seconds;
Xshort int clock[3];
X
X{
X long tmp;
X long tmp_micro;
X
X
X
X tmp = (long) *seconds;
X
X clock[0] = tmp >> 16;
X clock[1] = tmp & 0xffff;
X clock[2] = 0;
X/*
X tmp_micro = *seconds * 250000;
X
X clock[2] = tmp_micro & 0x000000ff;
X clock[1] = (tmp_micro & 0x0000ff00) >> 16;
X clock[0] = (tmp_micro & 0x00ff0000) >> 32;
X*/
X} /* calsectoclock_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* Where does this come from? */
X/* */
X/* ================================================================== */
X
Xvoid getusername_ (name, namlen)
X
Xchar *name;
Xlong *namlen;
X
X{
X struct passwd *pwd;
X char *tname;
X int i;
X extern char *getenv();
X extern struct passwd *getpwuid();
X
X
X
X if ((pwd = getpwuid(getuid())) != NULL)
X {
X tname = pwd->pw_name;
X }
X else
X if ((tname = getenv("USER")) == NULL &&
X (tname = getenv("LOGNAME")) == NULL)
X {
X tname = "intruder\0";
X }
X (void) strncpy(name, tname, 8);
X for (i=strlen(tname);i<10;i++)
X name[i] = ' ';
X name[10] = '\0';
X} /* getusername_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$bit_blt (source_bitmap_desc, source_window, */
X/* source_plane, dest_origin, dest_plane, status) */
X/* */
X/* input: */
X/* gpr_$bitmap_desc_t source_bitmap_desc; */
X/* gpr_$window_t source_window; */
X/* gpr_$plane_t source_plane; */
X/* gpr_$position_t dest_origin; */
X/* gpr_$plane_t dest_plane; */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Performs a bit block transfer from a single plane of any bitmap to */
X/* a single plane of the current bitmap. source_window is a */
X/* rectangular section of the bitmap from which to transfer pixels. */
X/* source_plane is the identifier of the single plane of the source */
X/* bitmap to move. dest_origin is the start position (top left */
X/* coordinate position) of the destination rectangle. status is the */
X/* completion status. */
X/* Both the source and destination bitmaps can be in either display */
X/* memory or main memory. If the source bitmap is a Display Manager */
X/* frame, the only allowed raster op codes are 0, 5, A, and F. These */
X/* are the raster operations in which the source plays no role. If a */
X/* rectangle is transferred by a BLT to a Display Manager frame and */
X/* the frame is refreshed for any reason, the BLT is re-executed. */
X/* Therefore, if the information in the source bitmap has changed, */
X/* the appearance of the frame changes accordingly. */
X/* */
X/* ================================================================== */
X
Xvoid gprbitblt_ (bitmap, window, plane, dsto, dstp, status)
X
Xbitmap_desc_t *bitmap;
Xshort window[4];
Xplane_t *plane;
Xshort dsto[2];
Xplane_t *dstp;
Xlong *status;
X
X{
X if (lop==6)
X XFillRectangle(d, w, EraseGC, (int)dsto[0], (int)dsto[1],
X (int)window[2], (int) window[3]);
X else
X {
X XCopyArea (d, w, w, FillGC,
X (int)window[0],(int) window[1],
X (int)window[2],(int) window[3],
X (int)dsto[0], (int)dsto[1]);
X }
X *status = 0;
X} /* gprbitblt_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$circle (center, radius, status) */
X/* */
X/* input: */
X/* gpr_$position_t center; */
X/* short radius; # 2-byte integer in 1-32767 */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Draws a circle with the specified radius around the specified */
X/* center point. gpr_$circle does not change the current position. */
X/* When you have clipping enabled, you can specify coordinates */
X/* outside the bitmap limits. With clipping disabled, specifying */
X/* coordinates outside the bitmap limits results in an error. */
X/* */
X/* ================================================================== */
X
Xvoid gprcircle_ (center, radius, status)
X
Xshort int center[2];
Xshort int *radius;
Xlong *status;
X
X{
X long size = *radius;
X int x = center[0] - size;
X int y = center[1] - size;
X unsigned int width = size+size;
X unsigned int height = size+size;
X long moon = 1;
X
X
X
X if (moon) /* Release 3 server paint circles awfully slow */
X if ((strncmp(ServerVendor(d), "MIT", 3) == 0) &&
X VendorRelease(d) < 4)
X return;
X
X XDrawArc (d, w, DrawGC, x, y, width, height, (int)0, (int)360*64);
X} /* gprcircle_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$circle_filled (center, radius, status) */
X/* */
X/* input: */
X/* gpr_$position_t center; */
X/* short radius; # 2-byte integer in 1-32767 */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Draws and fills a circle with the specified radius around the */
X/* specified center point. gpr_$circle_filled does not change the */
X/* current position. When you have clipping enabled, you can specify */
X/* coordinates outside the bitmap limits. With clipping disabled, */
X/* specifying coordinates outside the bitmap limits results in an */
X/* error. */
X/* */
X/* ================================================================== */
X
Xvoid gprcirclefilled_ (center, radius, status)
X
Xshort int center[2];
Xshort int *radius;
Xlong *status;
X
X{
X long size = *radius;
X int x = center[0] - size;
X int y = center[1] - size;
X unsigned int width = size+size;
X unsigned int height = size+size;
X
X XFillArc (d, w, FillGC, x, y, width, height, (int)360*64, (int)-360*64);
X} /* gprcirclefilled_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* Boolean gpr_$cond_event_wait (event_type, event_data, position, */
X/* status) */
X/* */
X/* return value: */
X/* Boolean gpr_$cond_event_wait( ... ) */
X/* */
X/* output: */
X/* gpr_$event_t event_type; */
X/* char *event_data; */
X/* gpr_$position_t position; */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Returns information about the occurrence of any event without */
X/* entering a wait state. The boolean return value indicates whether */
X/* or not the window is obscured; a false value means that the window */
X/* is obscured. This value is always true unless the program has */
X/* called gpr_$set_obscured_opt(...) and specified an option of */
X/* gpr_$ok_if_obs. The event_type is the type of event that occurred. */
X/* It is one of the following: gpr_$keystroke (input from a keyboard) */
X/* gpr_$buttons (Input from mouse or bitpad puck buttons) */
X/* gpr_$locator (input from a touchpad or mouse) gpr_$entered_window */
X/* (cursor has entered window) gpr_$left_window (cursor has left */
X/* window) gpr_$locator_stop (input from a locator has stopped) and */
X/* gpr_$no event (no event has occurred). event_data is the keystroke */
X/* or button character associated with the event, or the character */
X/* that identifies the window associated with an entered window event.*/
X/* This parameter is not modified for other events. position is the */
X/* position on the screen or within the window at which graphics */
X/* input occurred. status is the completion status. */
X/* */
X/* When called this routine returns immediately and reports */
X/* information about any event that has occured. The routine allows */
X/* the program to obtain information about an event without having to */
X/* suspend all of its activities. Unless locator data has been */
X/* processed since the last event was reported, position will be the */
X/* last position given to gpr_$set_cursor_position(...). If locator */
X/* data is received during this call, and gpr_$locator events are not */
X/* enabled, the GPR software will display the arrow cursor and will */
X/* set the keyboard cursor position. Although this call never waits */
X/* it may release the display if it receives an unenabled event that */
X/* needs to be handled by the Display Manager. The input routines */
X/* report button events as ASCII characters. "Down" transitions range */
X/* from "a" to "d"; "up" transitions range from "A" to "D". The three */
X/* mouse keys start with (a/A) on the leftside. As with keystroke */
X/* events, button events can be selectively enabled by specifying a */
X/* button keyset. */
X/* */
X/* ================================================================== */
X
Xint gprcondeventwait_ (event, key, posn, status)
X
Xshort *event;
Xchar *key;
Xposition_t *posn;
Xlong *status;
X
X{
X static unsigned long flag[16] = {0, 0, 0, 0};
X XEvent ev;
X int paused = 0;
X char keystr;
X int early_return;
X XWindowAttributes wattr;
X Window dummywin;
X int rx, ry;
X
X
X
X *event=0;
X *key=0;
X
X if (was_placed)
X {
X XSync(d, False);
X XSelectInput(d,w, ExposureMask|PointerMotionMask|
X ButtonPressMask|ButtonReleaseMask|
X KeyPressMask| StructureNotifyMask );
X was_placed = False;
X }
X
X XFlush(d);
X if (XPending(d))
X while (XPending(d) || paused)
X {
X if (!paused)
X XNextEvent(d, &ev);
X else
X XWindowEvent(d,w,KeyPressMask|StructureNotifyMask,&ev);
X }
X else
X return 0;
X
X switch(ev.type)
X {
X/*
X case Expose:
X if (((XExposeEvent*) &ev)->count)
X break;
X
X XSelectInput(d, w, StructureNotifyMask);
X XSync(d, True);
X
X XMoveResizeWindow(d, w, 0, 0, wid+1, hei+1);
X XWindowEvent(d, w, StructureNotifyMask, &ev);
X
X XGetWindowAttributes(d, w, &wattr);
X XTranslateCoordinates(d, w, wattr.root, 0, 0,
X &rx, &ry, &dummywin);
X
X XMoveResizeWindow(d, w, -rx, -ry, wid, hei);
X XWindowEvent(d, w, StructureNotifyMask, &ev);
X
X XSelectInput(d, w, NoEventMask);
X XSync(d, False);
X was_placed = True;
X
X mouse_posn.x = ev.xexpose.x;
X mouse_posn.y = ev.xexpose.y;
X *posn = mouse_posn;
X return 1;
X
X case UnmapNotify:
X paused = 1;
X return 0;
X
X case MapNotify:
X paused = 0;
X return 0;
X
X case MotionNotify:
X mouse_posn.x = ev.xmotion.x;
X mouse_posn.y = ev.xmotion.y;
X return 0;
X
X case ButtonPress:
X mouse_posn.x = ev.xbutton.x;
X mouse_posn.y = ev.xbutton.y;
X *key = ev.xbutton.button + 'a' - 1;
X flag[ev.xbutton.button]=1;
X *posn = mouse_posn;
X return 1;
X
X case ButtonRelease:
X mouse_posn.x = ev.xbutton.x;
X mouse_posn.y = ev.xbutton.y;
X *key = ev.xbutton.button + 'A' - 1;
X flag[ev.xbutton.button]=0;
X *posn = mouse_posn;
X return 1;
X*/
X
X case KeyPress:
X {
X early_return = False;
X
X mouse_posn.x = ev.xmotion.x;
X mouse_posn.y = ev.xmotion.y;
X *posn = mouse_posn;
X
X XLookupString(&ev.xkey,&keystr,1,(KeySym *) 0,
X (XComposeStatus *) 0);
X/*
X if (XLookupString(&ev.xkey,&keystr,1,(KeySym *) 0,
X (XComposeStatus *) 0) == 1)
X switch (keystr)
X {
X case 'p': case 'P':
X paused = 1;
X break;
X case 'c': case 'C':
X paused = 0;
X break;
X case 'i': case 'I': case ' ':
X XIconifyWindow(d, w, d->default_screen);
X break;
X case 'r': case 'R':
X XSelectInput(d, w, StructureNotifyMask);
X XSync(d, True);
X XMoveResizeWindow(d, w, 0, 0, wid+1, hei+1);
X XWindowEvent(d, w, StructureNotifyMask, &ev);
X
X XGetWindowAttributes(d, w, &wattr);
X XTranslateCoordinates(d, w, wattr.root, 0, 0,
X &rx, &ry, &dummywin);
X
X XMoveResizeWindow(d, w, -rx, -ry, wid, hei);
X XWindowEvent(d, w, StructureNotifyMask, &ev);
X
X XSelectInput(d, w, NoEventMask);
X XSync(d, False);
X was_placed = True;
X
X *key = 'R';
X early_return = True;
X break;
X case '\003': case 'q': case 'Q':
X *key = 'Q';
X early_return = True;
X break;
X default:
X break;
X }
X if (early_return)
X {
X mouse_posn.x = ev.xkey.x;
X mouse_posn.y = ev.xkey.y;
X *posn = mouse_posn;
X return 1;
X }
X*/
X *event = 1;
X *key = keystr;
X return 1;
X }
X }
X *posn = mouse_posn;
X return 0;
X} /* gprcondeventwait_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$enable_input (event_type, key_set, status) */
X/* */
X/* input: */
X/* gpr_$event_t event_type; */
X/* gpr_$keyset_t key_set; */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Enables an event type and a selected set of keys. */
X/* For event_type look at gpr_$cond_event_wait(...). key_set is a set */
X/* of specifically enabled characters when the event class is in */
X/* gpr_$keyset_t format. In Pascal (AEGIS, e.g. DomainOS was written */
X/* in pascal!), this is a set of characters. In Fortran and C this */
X/* can be implemented as an eight element array of 4-byte integers. */
X/* This parameter is specified for event types of gpr_$keystroke and */
X/* gpr_$butons. status is, as always, the completion status. */
X/* This routine will release and reacquire the display. This routine */
X/* specifies the type of event and event input for which */
X/* gpr_$event_wait(...) is to wait. This routine applies to the */
X/* current bitmap. However, enabled input events are stored in */
X/* attribute blocks (not with bitmaps) in much the same way as */
X/* attributes are. When a program chnages attribute blocks for a */
X/* bitmap during a graphics session, the input events you enabled are */
X/* lost unless you enable those events for the new attribute block. */
X/* Programsmust call this routine once for each event type to be */
X/* enabled. No event types are enabled by default. The keyset must */
X/* correspond to the specified event type. For example, use */
X/* ['#'...'~'] (in Pascal) to enable all normal printing graphics. */
X/* Use [chr(0)..chrchr(127)] to enable the entire ASCII character set.*/
X/* Except in borrow-display mode, it is a good idea to leave at least */
X/* the CMD and NEXT_WINDOW keys out of the keyset so that the user */
X/* can access other Display Manager windows. The insert files */
X/* /sys/ins/kbd.ins.[c,pas,ftn] contain definitions for the non-ASCII */
X/* keyboard keys in the range 128-255. Events and keyset data not */
X/* enabled with this routine will be handled by the Display Manager */
X/* in frame or direct mode and discarded in borrow-display mode. When */
X/* locator events are disabled, the GPR software will display the */
X/* arrow cursor and will set the keyboard cursor position when */
X/* locator data is received. */
X/* */
X/* ================================================================== */
X
Xvoid gprenableinput_ (event_type, key_set, status)
X
Xshort *event_type;
Xlong key_set[8];
Xlong *status;
X
X{
X /* XXX noop */
X} /* gprenableinput */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$init (op_mode, unit, size, hi_plane_id, */
X/* init_bitmap_desc, status) */
X/* */
X/* input: */
X/* gpr_$display_mode_t op_mode; */
X/* stream_$id_t unit; */
X/* gpr_$offset_t size; */
X/* gpr_$plane_t hi_plane_id; */
X/* */
X/* output: */
X/* gpr_$bitmap_desc_t init_bitmap_desc; */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Initializes the graphics primitive package. */
X/* op_mode is one of the following: gpr_$borrow (program borrows the */
X/* full screen and the keyboard from the Display Manager and uses the */
X/* display driver directly through GPR software) gpr_$borrow_nc (same */
X/* as gpr_$borrow except that all the pixels are not set to zero */
X/* [screen is not cleared]) gpr_$direct (program borrows a window */
X/* from the Display Manager instead of borrowing the whol display) */
X/* gpr_$frame (program executes within a frame of a Display Manager */
X/* Pad) gpr_$no_display (GPR allocates a bitmap inmain memory. No */
X/* graphics is displayed on the screen). unit has three possible */
X/* meanings, as follows: 1.) the display unit, if in gpr_$borrow or */
X/* gpr_$borrow_nc. The only valid display unit number is 1. 2.) The */
X/* stream identifier for the pad, if the graphics routines are to */
X/* operate in frame or direct mode. 3.) Any value, if in */
X/* gpr_$no_display mode. size is the size of the initial bitmap (and */
X/* the size of the frame, in frame mode). Possible values are: */
X/* x y */
X/* Borrow-display or direct mode: 1 to 1024 1 to 1024 */
X/* (limits are reduced to display */
X/* or window size if necessary) */
X/* Display Manager Frame: 1 to 32767 1 to 32767 */
X/* Main Memory Bitmap: 1 to 8192 1 to 8192 */
X/* hi_plane_id is the identifier of the bitmap's highest plane. */
X/* Possible values are: 0 for monochromatic displays, 0-3 for */
X/* colordisplays in two-board colfiguration, 0-7 for color displays */
X/* in three-board configuration, 0-7 for main memory bitmaps. */
X/* init_bitmap_desc is the descriptor of the initial bitmap that */
X/* uniquely identifies the bitmap. status is the completion status. */
X/* */
X/* To use multiple windows, you must call gpr_$init for each window. */
X/* If a program executes in borrow-display mode or direct-mode, the */
X/* size of the initial bitmap can be equal to or smaller than the */
X/* display. If the program executes in a frame of a Display Manager */
X/* Pad, "size" specifies the size of both the frame and the initial */
X/* bitmap. (In frame mode, the frame and the bitmap must be the same */
X/* size.) If the program does not use the display, gpr_$init(...) */
X/* creates a bitmap in main memory of the given size. To use imaging */
X/* formats, aprogram must be initialized in borrow display mode. */
X/* */
X/* ================================================================== */
X
Xvoid gprinit_ (flag, xx, size, yy, bitmapdesc, status)
X
Xfloat *flag;
Xint *xx;
Xshort int size[2];
Xint *yy;
Xlong int *bitmapdesc;
Xlong *status;
X
X{
X XEvent ev;
X XWindowAttributes wattr;
X Window dummywin;
X int rx, ry;
X
X
X
X XSelectInput(d, w, ExposureMask|PointerMotionMask|
X ButtonPressMask|ButtonReleaseMask|KeyPressMask);
X/*
X XMapWindow(d, w);
X XWindowEvent(d, w, ExposureMask, &ev);
X#if 0
X while (XGrabPointer (d, w, False,
X PointerMotionMask|ButtonPressMask|ButtonReleaseMask,
X GrabModeAsync,
X GrabModeAsync,
X w, None, ev.xmotion.time) != GrabSuccess)
X {
X printf("couldn't grab cursor.. waiting 1 second..\n");
X sleep(1);
X }
X printf("cursor grabbed..\n");
X#endif
X XGrabServer(d);
X*/
X
X XMapRaised(d, w);
X do
X XWindowEvent(d, w, ExposureMask, &ev);
X while(((XExposeEvent*) &ev)->count);
X
X XSelectInput(d, w, StructureNotifyMask);
X XSync(d, True); /* get rid of anything outstanding */
X
X /* i cheat and change width and height by 1....this almost guarantees
X i'll generate a ConfigureRequest event.
X */
X XMoveResizeWindow(d, w, 0, 0, wid+1, hei+1);
X XWindowEvent(d, w, StructureNotifyMask, &ev);
X
X XGetWindowAttributes(d, w, &wattr); /* check to see where the */
X XTranslateCoordinates(d, w, wattr.root, 0, 0, /* wm actually placed it */
X &rx, &ry, &dummywin);
X
X XMoveResizeWindow(d, w, -rx, -ry, wid, hei);
X XWindowEvent(d, w, StructureNotifyMask, &ev);
X
X XSelectInput(d, w, NoEventMask);
X XSync(d, False);
X was_placed = True;
X
X *status = 0; /* XXX most args */
X} /* gprinit_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$inq_config (config, status) */
X/* */
X/* output: */
X/* gpr_$display_config_t config; */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Returns the current display configuration. */
X/* config can be one of the predifined values: gpr_$bw_800x1024, */
X/* gpr_$bw_1280x1024, gpr_$color_1024x1024x8, gpr_$color_1280x1024x8, */
X/* ... status is the completion status. gpr_$inq_config(...) can be */
X/* used before gpr_$init(...). This is useful to determine the number */
X/* of possible planes in bitmaps on color displays before initializing*/
X/* GPR. */
X/* */
X/* ================================================================== */
X
Xvoid gprinqconfig_ (config, status)
X
Xlong *config;
Xlong *status;
X
X{
X XSetWindowAttributes attr;
X XColor color;
X Cursor c;
X Font f;
X XGCValues xgcv;
X unsigned long fcolor;
X unsigned long bcolor;
X Colormap cmap;
X XColor exact;
X XColor closest;
X XWMHints wmhints;
X int i;
X int ncolors = MAX_COLORS;
X /* These colors chosen at random */
X static char *ColorName[] = {"Black",
X "White",
X "Red",
X "Blue",
X "Yellow",
X "Green",
X "Orange",
X "Sea Green",
X "Coral",
X "Maroon",
X "Orange Red",
X "Sky Blue",
X "Violet Red",
X "Brown",
X "Lime Green",
X "Gold"};
X
X
X
X if (d == 0)
X d = XOpenDisplay (0);
X if (d == 0)
X {
X printf("can't open display! bye.\n");
X exit(1);
X }
X
X colortrans[1] = fcolor = WhitePixelOfScreen(DefaultScreenOfDisplay(d));
X colortrans[0] = bcolor = BlackPixelOfScreen(DefaultScreenOfDisplay(d));
X
X *config = DisplayPlanes(d,0);
X if (*config != 1)
X {
X cmap = XDefaultColormap(d,0);
X for (i = 0; i < MAX_COLORS; i++)
X {
X if (!XParseColor(d, cmap, ColorName[i], &exact))
X {
X fprintf(stderr,"XParseColor: color name %s \
X is not in database\n", ColorName[i]);
X exit(1);
X }
X if (!XAllocColor(d,cmap, &exact))
X {
X fprintf(stderr, "XAllocColor: Couldn't allocate %s\n",
X ColorName[i]);
X exit(1);
X }
X colortrans[i] = exact.pixel;
X }
X }
X wid = WidthOfScreen(DefaultScreenOfDisplay(d))-4;
X hei = HeightOfScreen(DefaultScreenOfDisplay(d))-4;
X w = XCreateSimpleWindow (d, DefaultRootWindow(d),
X 0, 0,
X wid,
X hei,
X 2,
X fcolor,
X bcolor);
X
X /* Tell the WM that we want input... */
X wmhints.input = True;
X wmhints.flags = InputHint;
X XSetWMHints(d, w, &wmhints);
X
X /* Name and raise the window */
X XStoreName(d, w,"XStrek");
X XSetIconName(d, w, "XStrek");
X
X/*
X attr.override_redirect = True;
X XChangeWindowAttributes (d, w, CWOverrideRedirect, &attr);
X*/
X xgcv.background = bcolor;
X xgcv.foreground = fcolor;
X FillGC = XCreateGC(d, w, GCForeground | GCBackground, &xgcv);
X xgcv.background = bcolor;
X xgcv.foreground = bcolor;
X EraseGC = XCreateGC(d, w, GCForeground | GCBackground, &xgcv);
X xgcv.background = bcolor;
X xgcv.foreground = fcolor;
X DrawGC = XCreateGC(d, w, GCForeground | GCBackground, &xgcv);
X TextGC = XCreateGC(d, w, GCForeground | GCBackground, &xgcv);
X f = XLoadFont (d, "fixed");
X c = XCreateGlyphCursor (d, f, f, ' ', ' ',
X &color, &color);
X XDefineCursor(d, w, c);
X XSetGraphicsExposures (d, FillGC, False);
X XSetGraphicsExposures (d, DrawGC, False);
X XSetGraphicsExposures (d, TextGC, False);
X *status = 0;
X} /* gprinqconfig_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$inq_cursor (curs_pat, curs_raster_op, active, position, */
X/* origin, status) */
X/* */
X/* output: */
X/* gpr_$bitmap_desc_t cursor_pat; */
X/* gpr_$raster_op_array_t cursor_raster_op; */
X/* Boolean active; */
X/* gpr_$position_t position; */
X/* gpr_$position_t origin; */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Returns information about the cursor. */
X/* cursor_pat is ithe identifier of the cursor pattern bitmap. */
X/* cursor_raster_op is is operation code. The default value is three. */
X/* (The operation assigns all source values to the new destination.) */
X/* active is a boolean which indicateswhether the cursor is displayed.*/
X/* True when displayed. position is the current position of the */
X/* cursor on the screen. origin is the pixel curently set as the */
X/* cursor origin. status is the completion status. */
X/* */
X/* In borrow-display mode the position is the absolute position on */
X/* the screen. In direct or frame mode position is relative to the */
X/* top left corner of the frame. */
X/* */
X/* ================================================================== */
X
Xvoid gprinqcursor_ (cursor, ops, active, posn, origin, status)
X
Xlong *active;
Xposition_t *posn;
Xposition_t *origin;
Xlong *status;
X
X{
X *posn = mouse_posn;
X *status = 0;
X} /* gprinqcursor_ */
X
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$line (x, y, status) */
X/* */
X/* input: */
X/* gpr_$coordinate_t x; */
X/* gpr_$coordinate_t y; */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Draws a line from the current position to the end point supplied. */
X/* The current position is updated to the end point. When you have */
X/* cliping enabled, you can specify coordinates outside the bitmap */
X/* limits. With clipping disabled, specifying coordinates outside the */
X/* bitmap limits results in an error. To set a new position without */
X/* drawing a line, use gpr_$move(...). */
X/* */
X/* ================================================================== */
X
Xvoid gprline_ (x, y, status)
X
Xshort *x;
Xshort *y;
Xlong *status;
X
X{
X
X *status = 0;
X XDrawLine(d, w, DrawGC, curpoint.x, curpoint.y, (int) *x, (int) *y );
X curpoint.x = *x;
X curpoint.y = *y;
X} /* gprline_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$load_font_file (pathname, pathname_length, font_id, */
X/* status) */
X/* */
X/* input: */
X/* name_$pname_t pathname; */
X/* short pathname_length; # 2-byte integer */
X/* */
X/* output: */
X/* short font_id; # 2-byte integer */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Loads a font from a file into the display's font storage area. */
X/* Use the font_id returned as input for gpr_$set_text_font(...) */
X/* To unload fonts use gpr_$unload_font_file(...) */
X/* */
X/* ================================================================== */
X
Xvoid gprloadfontfile_ (path, pnlen, fontid, status)
X
Xchar *path;
Xlong *pnlen;
Xlong *fontid;
Xlong *status;
X
X{
X int i;
X
X
X
X for (i=0; fontmap[i].gprname; i++)
X {
X if (strcmp(path, fontmap[i].gprname) == 0)
X {
X *fontid = XLoadFont (d, fontmap[i].xname);
X return;
X }
X }
X *fontid = XLoadFont(d, "fixed");
X} /* gprloadfontfile_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$move (x, y, status) */
X/* */
X/* input: */
X/* gpr_$coordinate_t x; */
X/* gpr_$coordinate_t y; */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Sets the current position to the given position. When you have */
X/* cliping enabled, you can specify coordinates outside the bitmap */
X/* limits. With clipping disabled, specifying coordinates outside the */
X/* bitmap limits results in an error. */
X/* */
X/* ================================================================== */
X
Xvoid gprmove_ (x, y, status)
X
Xshort int *x;
Xshort int *y;
Xlong *status;
X
X{
X curpoint.x = *x;
X if (curpoint.x == 0)
X curpoint.x = *(long *)x;
X curpoint.y = *y;
X if (curpoint.y == 0)
X curpoint.y = *(long *)y;
X *status = 0;
X} /* gprmove_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$multiline (x, y, npositions, status) */
X/* */
X/* input: */
X/* gpr_$coordinate_array_t x; */
X/* gpr_$coordinate_array_t y; */
X/* short npositions; # 2-byte int in 1-32767 */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Draws a series of disconnected lines. It moves alternately to a */
X/* new position and draws lines: it moves to the first given position */
X/* then draws a line from the first to the second given position, */
X/* updates the current position, moves to the third, etc. After all */
X/* that the last point becomes the current position. When you have */
X/* cliping enabled, you can specify coordinates outside the bitmap */
X/* limits. With clipping disabled, specifying coordinates outside the */
X/* bitmap limits results in an error. */
X/* */
X/* ================================================================== */
X
Xvoid gprmultiline_ (x, y, number, status)
X
Xshort *x;
Xshort *y;
Xint *number;
Xlong *status;
X
X{
X int i;
X int count;
X XSegment *segments;
X
X
X
X *status = 0;
X count = *number;
X /*
X * gross hack. we may be passed an integer*2 or an integer*4;
X * neither is likely to be greater than 2<<16
X */
X if (count == 0)
X count = *((long *)number);
X
X if (count & 1)
X printf("odd multiline??\n");
X /* not exactly what you want.. */
X segments = (XSegment *)malloc (sizeof(XSegment) * (count/2));
X for (i=0; i<count; i+= 2)
X {
X segments[i/2].x1 = x[i];
X segments[i/2].y1 = y[i];
X segments[i/2].x2 = x[i+1];
X segments[i/2].y2 = y[i+1];
X }
X curpoint.x = segments[count/2].x2;
X curpoint.y = segments[count/2].y2;
X XDrawSegments (d, w, DrawGC, segments, count/2);
X free(segments);
X} /* gprmultiline_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$polyline (x, y, npositions, status) */
X/* */
X/* input: */
X/* gpr_$coordinate_array_t x; */
X/* gpr_$coordinate_array_t y; */
X/* short npositions; # 2-byte int in 1-32767 */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Draws a series of connected lines. Drawing begins at the current */
X/* position, draws to the first given coordinat position, then sets */
X/* the current position to the first given position. This is repeated */
X/* for all given positions. When you have */
X/* cliping enabled, you can specify coordinates outside the bitmap */
X/* limits. With clipping disabled, specifying coordinates outside the */
X/* bitmap limits results in an error. */
X/* */
X/* ================================================================== */
X
Xvoid gprpolyline_ (x, y, number, status)
X
Xshort *x;
Xshort *y;
Xint *number;
Xlong *status;
X
X{
X int i;
X int count;
X XPoint *points;
X
X
X
X *status = 0;
X count = *number;
X
X /*
X * gross hack. we may be passed an integer*2 or an integer*4;
X * neither is likely to be greater than 2<<16
X */
X if (count == 0)
X count = *((long *)number);
X
X points = (XPoint *) malloc (sizeof(XPoint) * (count + 1));
X points[0] = curpoint;
X for (i=0; i<count; i++)
X {
X points[i+1].x = x[i];
X points[i+1].y = y[i];
X }
X curpoint = points[count];
X XDrawLines(d, w, DrawGC, points, count+1, CoordModeOrigin);
X free(points);
X} /* gprpolyline_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$rectangle (rectangle, status) */
X/* */
X/* input: */
X/* gpr_$window_t rectangle; */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Draws and fills a rectangle in the current bitmap. It fills the */
X/* rectangle with the color/intensity value specified with */
X/* gpr_$set_fill_value(...). For unfilled rectangles use */
X/* gpr_$draw_box(...) or gpr_$polyline(...) */
X/* */
X/* ================================================================== */
X
Xvoid gprrectangle_ (window, status)
X
Xshort int window[4];
Xlong *status;
X
X{
X XPoint tr[4];
X
X
X
X tr[0].x = window[0];
X tr[0].y = window[1];
X tr[1].x = window[0] + window[2];
X tr[1].y = window[1];
X tr[2].x = window[0] + window[2];
X tr[2].y = window[1] + window[3];
X tr[3].x = window[0];
X tr[3].y = window[1] + window[3];
X XFillPolygon (d, w, FillGC, tr, 4, Convex, CoordModeOrigin);
X} /* gprrectangle_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$set_clipping_active (active, status) */
X/* */
X/* input: */
X/* Boolean active; */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Enables/disables a clipping window for the current bitmap. active */
X/* is a boolean (logical) value that specifies whether or not to */
X/* enable the clipping window. True => clipping enabled. status is, */
X/* as always, the completetion status. To specify a clipping window, */
X/* use gpr_$set_clip_window(...). Initially, in borrow-display mode, */
X/* the clip window is disabled. In direct mode, the clip window is */
X/* enabled and clipped to the size of the window. Clipping cannot be */
X/* enabled in a bitmap corresponding to a Display Manager frame. */
X/* */
X/* ================================================================== */
X
Xvoid gprsetclippingactive_ (flag, status)
X
Xint *flag;
Xlong *status;
X
X{
X if (*flag)
X {
X XSetClipRectangles (d, FillGC, 0, 0, &clipr, 1, YXBanded);
X XSetClipRectangles (d, DrawGC, 0, 0, &clipr, 1, YXBanded);
X XSetClipRectangles (d, TextGC, 0, 0, &clipr, 1, YXBanded);
X }
X else
X {
X XSetClipMask (d, FillGC, None);
X XSetClipMask (d, DrawGC, None);
X XSetClipMask (d, TextGC, None);
X }
X} /* gprsetclippingactive_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$set_clip_window (window, status) */
X/* */
X/* input: */
X/* gpr_$window_t window; */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Changes the clipping window for the current bitmap. The default */
X/* clip window is the entire bitmap. This call is not allowed on the */
X/* bitmap corresponding to the Display Manager frame. */
X/* */
X/* ================================================================== */
X
Xvoid gprsetclipwindow_ (window, status)
X
Xshort int window[4];
Xlong *status;
X
X{
X clipr.x = window[0];
X clipr.y = window[1];
X clipr.width = window[2];
X clipr.height = window[3];
X} /* gprsetclipwindow_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$set_color_map (start_index, n_entries, values, status) */
X/* */
X/* input: */
X/* gpr_$pixel_value_t start_index; */
X/* short n_entries; # 2-byte integer */
X/* gpr_$color_vector_t values; */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Establishes new values for the color map. start_index is the index */
X/* of the first color value entry. n_entries is the number of entries.*/
X/* Valid values are: 2 for monochromatic displays, 1-16 for color */
X/* displays in 4-bit pixel format, 1-256 for color displays in 8-bit */
X/* or 24-bit pixel format. values are the color value entries. status */
X/* is the completion status. For the monochromatic display, the */
X/* default start-index is 0, n-entries is 2, and the values are */
X/* gpr_$black and gpr_$white. For the monochromatic display, if the */
X/* program provides fewer than two values, or if the first two vales */
X/* are the same, the routine returns an error. For the monochromatic */
X/* display, the graphics primitives simultae a color map by modifying */
X/* the contents of display memory. In direct mode, you must acquire */
X/* the display before establishing new values for the color map. On a */
X/* monochromatic display in direct mode, the color map can not be */
X/* modified. */
X/* */
X/* ================================================================== */
X
Xvoid gprsetcolormap_ (start, nentries, values, status)
X
Xpixel_t *start;
Xlong *nentries;
Xlong *values;
Xlong *status;
X
X{
X Colormap cmap;
X XColor exact;
X XColor closest;
X} /* gprsetcolormap_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$set_cursor_position (position, status) */
X/* */
X/* input: */
X/* gpr_$position_t position; */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Establishes a position on the screen for display of the cursor. */
X/* posistion is the screen coordinate position for display of the */
X/* cursor. The values must be within the limits of the display in use.*/
X/* (Frame: 0-32767 for x and y). status is the completion status. If */
X/* the coordinate position would cause any part of the cursor to be */
X/* outside the screen or frame, the cursor moves only as far as the */
X/* edge of the screen. The cursor is neither clipped nor made to */
X/* disappear. In a Display Manager frame, this routine moves the */
X/* cursor only if the cursor is in the window viewing this frame when */
X/* the call is issued. If not, a "next window" command which moves to */
X/* that window will move the cursor to its new position. */
X/* */
X/* ================================================================== */
X
Xvoid gprsetcursorposition_ (posn, status)
X
Xposition_t *posn;
Xlong *status;
X
X{
X XWarpPointer (d, None, w, 0, 0, 0, 0, posn->x, posn->y);
X} /* gprsetcursorposition_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$set_draw_value (index, status) */
X/* */
X/* input: */
X/* gpr_$pixel_value_t index; */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Specifies the color/intensity value to use to draw lines. index is */
X/* the color map index. If this value equals -2 this specifies using */
X/* the color/intensity value of the bitmap background as the line */
X/* drawing value. For borrowed displays and memory bitmaps, the fill */
X/* background is always zero. For Display Manager frames, this is the */
X/* pixel value in use for the window background. status is the */
X/* completion status. The default draw value is 1. For monochromatic */
X/* displays, only the low-order bit of the draw value is considered, */
X/* because monochromatic displays have only one plane. For color */
X/* displays in 4-bit pixel format, only the four lowest-order bits of */
X/* the draw value are considered, because these displays have four */
X/* planes. */
X/* */
X/* ================================================================== */
X
Xvoid gprsetdrawvalue_ (pixel, status)
X
Xlong *pixel;
Xlong *status;
X
X{
X XSetForeground(d, DrawGC, colortrans[*pixel]);
X *status = 0;
X} /* gprsetdrawvalue_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$set_fill_value (index, status) */
X/* */
X/* input: */
X/* gpr_$pixel_value_t index; */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Specifies the color/intensity value to use to fill circles, */
X/* rectangle, triangles, and trapezoids. index is */
X/* the color map index. status is the */
X/* completion status. The default fill value is 1. For monochromatic */
X/* displays, only the low-order bit of the draw value is considered, */
X/* because monochromatic displays have only one plane. For color */
X/* displays in 4-bit pixel format, only the four lowest-order bits of */
X/* the draw value are considered, because these displays have four */
X/* planes. */
X/* */
X/* ================================================================== */
X
X
Xvoid gprsetfillvalue_ (pixel, status)
X
Xlong *pixel;
Xlong *status;
X
X{
X XSetForeground(d, FillGC, colortrans[*pixel]);
X *status = 0;
X} /* gprsetfillvalue_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$set_raster_op (plane_id, raster_op, status) */
X/* */
X/* input: */
X/* gpr_$plane_t plane_id; */
X/* gpr_$raster_op_t raster_op; */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Specifies the raster operation for both BLTs and lines. plane_id */
X/* identifies the bitmap plane involved in the raster operation. */
X/* Valid values are zero through the identifier of the bitmap's */
X/* highest plane. raster_op is the raster operation code. Possible */
X/* values are zero through fifteen. status is the completion status. */
X/* The initial raster operation is 3. This operation assigns all */
X/* source bit values to new destination bit values. Following is a */
X/* truth table for all sixteen operation codes: */
X/* result dest */
X/* source dest 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 */
X/* 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 */
X/* 0 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 */
X/* 1 0 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 */
X/* 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 */
X/* */
X/* ================================================================== */
X
Xvoid gprsetrasterop_ (plane, op, status)
X
Xshort int *plane;
Xshort int *op;
Xlong *status;
X
X{
X lop = (long) *op;
X /*
X * When we invert, invert only one bit.
X */
X if (lop == 10)
X {
X XSetPlaneMask(d, FillGC, 0x00000001);
X XSetPlaneMask(d, TextGC, 0x00000001);
X XSetPlaneMask(d, EraseGC, 0x00000001);
X }
X else
X {
X XSetPlaneMask(d, FillGC, 0xffffffff);
X XSetPlaneMask(d, TextGC, 0xffffffff);
X XSetPlaneMask(d, EraseGC, 0xffffffff);
X }
X
X XSetFunction(d, FillGC, lop);
X XSetFunction(d, TextGC, lop);
X XSetFunction(d, EraseGC, lop);
X#if 0
X XSetFunction(d, DrawGC, lop);
X#endif
X} /* gprsetrasterop_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$set_text_background_value (index, status) */
X/* */
X/* input: */
X/* gpr_$pixel_value_t index; */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Specifies the color/intensity value to use for text background. */
X/* index is */
X/* the color map index. If this value equals -2 this specifies using */
X/* the color/intensity value of the bitmap background as the line */
X/* drawing value. For borrowed displays and memory bitmaps, the fill */
X/* background is always zero. For Display Manager frames, this is the */
X/* pixel value in use for the window background. If this value equals */
X/* -1 this specifies that the text background is transparent; that is */
X/* the old values of the pixels are not changed. status is the */
X/* completion status. The default value is -2. For monochromatic */
X/* displays, only the low-order bit of the draw value is considered, */
X/* because monochromatic displays have only one plane. For color */
X/* displays in 4-bit pixel format, only the four lowest-order bits of */
X/* the draw value are considered, because these displays have four */
X/* planes. */
X/* */
X/* ================================================================== */
X
Xvoid gprsettextbackgroundvalue_ (pixel, status)
X
Xlong *pixel;
Xlong *status;
X
X{
X XSetBackground(d, TextGC, colortrans[*pixel]);
X *status = 0;
X} /* gprsettextbackgroundvalue_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$set_text_font (font_id, status) */
X/* */
X/* input: */
X/* short font_id; # 2-byte integer */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Establishes a new font for subsequent text operations. font_id is */
X/* the identifier of the new text font. status is the completion */
X/* status. There is no default text font. A program must load and set */
X/* the font. Call gpr_$set text_font(...) for each main memory bitmap.*/
X/* Otherwise an error is returned (invalid font id). */
X/* */
X/* ================================================================== */
X
Xvoid gprsettextfont_ (font, status)
X
Xlong *font;
Xlong *status;
X
X{
X /* XXX fill in font here */
X XSetFont(d, TextGC, *font);
X *status = 0;
X} /* gprsettextfont_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$set_text_path (direction, status) */
X/* */
X/* input: */
X/* gpr_$direction_t direction; */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Specifies the direction for writing a line of text. direction is */
X/* on of gpr_$up, gpr_$down. gpr_$left, gpr_$right. The default text */
X/* path is gpr_$right. status is the completion status. */
X/* */
X/* ================================================================== */
X
Xvoid gprsettextpath_ (direction, status)
X
Xlong *status;
X
X{
X /*XXX noop */
X *status = 0;
X} /* gprsettextpath_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$set_text_value (index, status) */
X/* */
X/* input: */
X/* gpr_$pixel_value_t index; */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Specifies the color/intensity value to use for writing text. index */
X/* is the color map index. status is the */
X/* completion status. The default value is 1 for borrowed displays, */
X/* memory bitmaps, and Display Manager frames on monochromatic */
X/* displays; 0 for Display Manager frames on color displays. */
X/* For monochromatic */
X/* displays, only the low-order bit of the draw value is considered, */
X/* because monochromatic displays have only one plane. For color */
X/* displays in 4-bit pixel format, only the four lowest-order bits of */
X/* the draw value are considered, because these displays have four */
X/* planes. */
X/* */
X/* ================================================================== */
X
Xvoid gprsettextvalue_ (pixel, status)
X
Xlong *pixel;
Xlong *status;
X
X{
X XSetForeground(d, TextGC, colortrans[*pixel]);
X *status = 0;
X} /* gprsettextvalue_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$terminate (delete_display, status) */
X/* */
X/* input: */
X/* Boolean delete_display; */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Terminates the graphics primitives package. delete_display */
X/* specifies whether to delete the frame of the Display Manager pad. */
X/* If the program has operated in a Display Manager frame and needs */
X/* to delete the frame at the end of a graphics sesion, set this */
X/* value to True. If the program needs to close, but not to delete */
X/* the frame, set this value to false. If the program has not used a */
X/* Display Manager frame, the value is ignored. status is the */
X/* completion status. gpr_$terminate(...) deletes the frame */
X/* regardless of the value of the delete-display argument in the */
X/* following case. A BLT operation from a memory bitmap has been done */
X/* to a Display Manager frame since the last time gpr_$clear was */
X/* called for the frame. */
X/* */
X/* ================================================================== */
X
Xvoid gprterminate_ (flag, status)
X
Xint *flag;
Xlong *status;
X
X{
X/*
X XUngrabServer(d);
X XUngrabPointer(d, CurrentTime);
X*/
X XCloseDisplay(d);
X *status = 0;
X} /* gprterminate_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$text (string, string_length, status) */
X/* */
X/* input: */
X/* gpr_$string_t string; */
X/* short string_length; # 2-byte integer ( <257 ) */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Writes text to the current bitmap, beginning at the current */
X/* position. gpr_$text(...) always clips to the edge of the bitmap, */
X/* regardless of whether clipping is enabled. It writes the characters*/
X/* in the current font which correspond to the ASCII values of the */
X/* characters in the specified string. If the font does not have a */
X/* character which corresponds to a character in the string, */
X/* gpr_$text(...) leaves a space. The size of the space is set by */
X/* gpr_$set_space_size(...). The origin of the first character of the */
X/* string is placed at the current position. Generally, the origin is */
X/* is at the bottom left, excluding descenders of the character. Upon */
X/* completion of the gpr_$text routine, the current position is */
X/* updated to the coordinate position where a next character would be */
X/* written. This is the case even if the string is partly or completly*/
X/* clipped. However, the current position always remains within the */
X/* boundaries of the bitmap. */
X/* */
X/* ================================================================== */
X
Xvoid gprtext_ (string, nchars, status)
X
Xchar *string;
Xint *nchars;
Xlong *status;
X
X{
X#if 0
X printf("%d: (%.*s) show at %d, %d\n", *nchars, *nchars, string,
X curpoint.x, curpoint.y);
X#endif
X XDrawImageString (d, w, TextGC, curpoint.x, curpoint.y, string, *nchars);
X *status = 0;
X} /* gprtext_ */
X
X
X
X
X/* ================================================================== */
X/* */
X/* void gpr_$trapezoid (trapezoid, status) */
X/* */
X/* input: */
X/* gpr_$trap_t trapezoid; */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Draws and fills a trapezoid. trapezoid is the trapezoid to be */
X/* drawn. status is the completion status. gpr_$trapezoid(...) fills */
X/* in a trapezoid with the color/intensity value specified with */
X/* gpr_$set_fill_value(...) or the pattern set by */
X/* gpr_$set_fill_pattern(...). The GPR routines define a trapezoid as */
X/* a quadrilateral with two horizontal parallel sides. To draw an */
X/* unfilled trapezoid use gpr_$polyline(...). */
X/* */
X/* ================================================================== */
X
Xvoid gprtrapezoid_ (trap, status)
X
Xtrap_t *trap;
Xlong *status;
X
X{
X XPoint tr[4];
X
X
X
X tr[0].x = trap->top.x_coord_l;
X tr[0].y = trap->top.y_coord;
X tr[1].x = trap->top.x_coord_r;
X tr[1].y = trap->top.y_coord;
X tr[2].x = trap->bot.x_coord_r;
X tr[2].y = trap->bot.y_coord;
X tr[3].x = trap->bot.x_coord_l;
X tr[3].y = trap->bot.y_coord;
X XFillPolygon (d, w, FillGC, tr, 4, Convex, CoordModeOrigin);
X} /* gprtrapezoid_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void time_$clock (clock) */
X/* */
X/* output: */
X/* time_$clock_t clock; */
X/* */
X/* ================================================================== */
X/* */
X/* Returns the current UTC (Coordinated Universal) time. It is */
X/* represented as the number of 4-microsecond periods that have */
X/* elapsed since January1, 1980 at 00:00. To get the local time, use */
X/* cal_$get_local_time(...). To compute the local time from the value */
X/* returned by time_$clock(...), use cal_$apply_local_offset(...). */
X/* */
X/* ================================================================== */
X
Xvoid timeclock_ (clock)
X
Xshort int clock[3];
X
X{
X struct timeval tv;
X long tmp_micro;
X
X
X
X XSync(d,0);
X gettimeofday(&tv, 0);
X
X clock[0] = tv.tv_sec >> 16;
X clock[1] = tv.tv_sec & 0xffff;
X clock[2] = tv.tv_usec/4;
X
X/*
X tmp_micro = tv.tv_sec * 250000 + tv.tv_usec/4;
X
X clock[2] = tmp_micro & 0x000000ff;
X clock[1] = (tmp_micro & 0x0000ff00) >> 16;
X clock[0] = (tmp_micro & 0x00ff0000) >> 32;
X*/
X} /* timeclock_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void time_$wait (rel_abs, clock, status) */
X/* */
X/* input: */
X/* time_$rel_abs_t rel_abs; */
X/* time_$clock_t clock; */
X/* */
X/* output: */
X/* status_$t status; */
X/* */
X/* ================================================================== */
X/* */
X/* Suspends the calling process for a specified time. rel_abs is one */
X/* of the following: time_$relative (clock specifies the number of */
X/* 4-microsecond periods to wait), time_$absolute (clock contains the */
X/* UTC system time for which to wait). status is, as always, the */
X/* completion status. */
X/* */
X/* ================================================================== */
X
Xvoid timewait_ (delta, clock, status)
X
Xfloat *delta;
Xshort int clock[3];
Xlong *status;
X
X{
X struct timeval tv;
X long tmp_micro;
X
X
X
X XSync(d, 0);
X
X tv.tv_sec = ((clock[0] <<16) + clock[1])>>1;
X tv.tv_usec = clock[2] * 4;
X
X/*
X tmp_micro = ((((clock[0] * 65536) + clock[1]) * 65536) + clock[2]);
X
X tv.tv_sec = tmp_micro / 250000;
X tv.tv_usec = (tmp_micro && 0x000000ff);
X*/
X select (0, 0, 0, 0, &tv);
X} /* timewait_ */
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* void tone_$time (time) */
X/* */
X/* input: */
X/* time_$clock_t time; */
X/* */
X/* ================================================================== */
X/* */
X/* Makes a tone. The tone remains on for the time indicated in the */
X/* call. */
X/* */
X/* ================================================================== */
X
Xvoid tonetime_ (time)
X
Xlong *time;
X
X{
X XBell(d, 0);
X}
X
X
X
X
X
X/* ================================================================== */
X/* */
X/* Where does this come from? */
X/* */
X/* ================================================================== */
X
Xvoid rand_ (x)
X
Xfloat *x;
X
X{
X unsigned long r = random();
X double dr = r % 566927;
X
X *x = dr / 566927;
X} /* rand_ */
E!O!F! xstrek/gpr.c
exit
=====
@work: | Matthias Pfuetzner | @home:
ZGDV, Wilhelminenstrasse 7 | 6100 Darmstadt, FRG | Lichtenbergstrasse 73
+49 6151 155-164 or -101 \ <- Tel.nr. -> / +49 6151 75717
pfuetzner@agd.fhg.de pfuetzner@zgdvda.UUCP XBR1YD3U@DDATHD21.BITNET
--
Dan Heller
------------------------------------------------
O'Reilly && Associates ZipCode Software
Senior Writer President
argv@ora.com argv@zipcode.com