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C/C++ Users Group Library 1996 July
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C-C++ Users Group Library July 1996.iso
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vol_300
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334_03
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sun.trm
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1991-02-04
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/* GNUPLOT - sun.trm */
/*
* Copyright (C) 1990
*
* Permission to use, copy, and distribute this software and its
* documentation for any purpose with or without fee is hereby granted,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation.
*
* Permission to modify the software is granted, but not the right to
* distribute the modified code. Modifications are to be distributed
* as patches to released version.
*
* This software is provided "as is" without express or implied warranty.
*
* This file is included by ../term.c.
*
* This terminal driver supports:
* SUNview windowing system
*
* AUTHORS
* Maurice Castro
*
* send your comments or suggestions to (pixar!info-gnuplot@sun.com).
*
*/
#include <suntool/sunview.h>
#include <suntool/canvas.h>
#include <suntool/scrollbar.h>
#include <suntool/panel.h>
#include <pixrect/pixrect_hs.h>
#define SUN_XMAX 600
#define SUN_YMAX 512
#define SUN_VCHAR (12) /* default, will be changed */
#define SUN_HCHAR (8) /* default, will be changed */
#define SUN_VTIC (SUN_YMAX/80)
#define SUN_HTIC (SUN_XMAX/80)
#define MARGIN 5
#define MINWIN 128
static Frame frame;
static Canvas canvas;
static Pixwin *pw;
static struct pixfont *sun_font = NULL;
static enum JUSTIFY sun_justify=LEFT;
static Notify_value local_notice_destroy();
extern Notify_error notify_dispatch();
/* dotted line generator */
unsigned int sun_value = 1; /* this can be used for colour */
unsigned int sun_line_mask = 0xffff; /* 16 bit mask for dotted lines */
static unsigned int sun_pattern[] = {0xffff, 0x1111,
0xffff, 0x5555, 0x3333, 0x7777, 0x3f3f, 0x0f0f, 0x5f5f};
int sun_mask_count = 0;
unsigned int sun_lastx, sun_lasty; /* last pixel set - used by sun_line */
SUN_init()
{
struct termentry *t = &term_tbl[term];
struct pr_subregion bound;
frame = window_create(NULL, FRAME,
FRAME_LABEL, "Gnuplot",
0);
notify_interpose_destroy_func(frame,local_notice_destroy);
canvas = window_create(frame, CANVAS,
CANVAS_AUTO_EXPAND, TRUE,
CANVAS_AUTO_SHRINK, TRUE,
CANVAS_MARGIN, MARGIN,
0);
notify_do_dispatch();
pw = canvas_pixwin(canvas);
window_set(frame, WIN_SHOW, TRUE, 0);
/* figure out font and rough size */
sun_font = pf_default();
pf_textbound(&bound, 1, sun_font, "M");
t->v_char = bound.size.y;
t->h_char = bound.size.x;
return;
}
SUN_graphics()
{
term_tbl[term].xmax = (int) window_get(canvas,CANVAS_WIDTH);
term_tbl[term].ymax = (int) window_get(canvas,CANVAS_HEIGHT);
pw_writebackground(pw,0,0,term_tbl[term].xmax, term_tbl[term].ymax, PIX_SRC );
notify_dispatch();
/* do not let the user make the window too small */
if ((term_tbl[term].xmax)<MINWIN)
{
window_set(frame,
WIN_WIDTH, MINWIN+2*MARGIN+24,
0);
notify_dispatch();
SUN_graphics();
}
if ((term_tbl[term].ymax) <MINWIN)
{
window_set(frame,
WIN_HEIGHT, MINWIN+2*MARGIN+24,
0);
notify_dispatch();
SUN_graphics();
}
notify_dispatch();
return;
}
SUN_text()
{
notify_dispatch();
return; /* enter text from another window!!! */
}
SUN_linetype(linetype)
int linetype;
{
if (linetype>=7)
linetype %= 7;
sun_line_mask = sun_pattern[linetype+2];
sun_mask_count=0;
}
SUN_move(x, y)
unsigned int x, y;
{
sun_lastx = x;
sun_lasty = y;
notify_dispatch();
return;
}
SUN_vector(x, y)
unsigned int x, y;
{
if ( (x>=term_tbl[term].xmax) || (y>=term_tbl[term].ymax) )
return;
sun_line(sun_lastx,x,sun_lasty,y);
canvas_pixwin(canvas);
notify_dispatch();
return;
}
SUN_put_text(x,y,str)
unsigned int x, y;
char *str;
{
struct pr_subregion bound;
if ( (x>=term_tbl[term].xmax) || (y>=term_tbl[term].ymax) )
return;
pf_textbound(&bound, strlen(str), sun_font, str);
y = term_tbl[term].ymax-1-y + bound.size.y/3; /* vertical centering */
switch(sun_justify) {
case LEFT: break;
case CENTRE: x -= bound.size.x/2; break;
case RIGHT: x -= bound.size.x; break;
}
pw_text(pw, x,y, PIX_SRC | PIX_DST, 0, str);
canvas_pixwin(canvas);
notify_dispatch();
return;
}
int SUN_justify_text(mode)
enum JUSTIFY mode;
{
sun_justify = mode;
return (TRUE);
}
SUN_reset()
{
term_tbl[term].xmax = SUN_XMAX;
term_tbl[term].ymax = SUN_YMAX;
window_set(frame, WIN_SHOW, FALSE, 0);
return;
}
sun_setmaskpixel(x,y,value)
unsigned int x,y,value;
{
/* dotted line generator */
if ((sun_line_mask>>sun_mask_count)&(unsigned int)(1)) {
pw_put(pw,x,term_tbl[term].ymax-1-y,sun_value);
}
sun_mask_count= (sun_mask_count+1) % 16;
sun_lastx= x; /* last pixel set with mask */
sun_lasty= y;
}
sun_line(x1,x2,y1,y2)
unsigned int x1,x2,y1,y2;
{
int runcount;
int dx,dy;
int xinc,yinc;
unsigned int xplot,yplot;
runcount=0;
dx = abs((int)(x1)-(int)(x2));
if (x2>x1) xinc= 1;
if (x2==x1) xinc= 0;
if (x2<x1) xinc= -1;
dy = abs((int)(y1)-(int)(y2));
if (y2>y1) yinc= 1;
if (y2==y1) yinc= 0;
if (y2<y1) yinc= -1;
xplot=x1;
yplot=y1;
if (dx>dy) {
/* iterate x */
if ( (sun_line_mask==0xffff) ||
((xplot!=sun_lastx) && (yplot!=sun_lasty)) )
sun_setmaskpixel(xplot,yplot,sun_value);
while (xplot!=x2) {
xplot+=xinc;
runcount+=dy;
if (runcount>=(dx-runcount)) {
yplot+=yinc;
runcount-=dx;
}
sun_setmaskpixel(xplot,yplot,sun_value);
}
} else {
/* iterate y */
if ( (sun_line_mask==0xffff) ||
((xplot!=sun_lastx) && (yplot!=sun_lasty)) )
sun_setmaskpixel(xplot,yplot,sun_value);
while (yplot!=y2) {
yplot+=yinc;
runcount+=dx;
if (runcount>=(dy-runcount)) {
xplot+=xinc;
runcount-=dy;
}
sun_setmaskpixel(xplot,yplot,sun_value);
}
}
}
static Notify_value local_notice_destroy(frame, status)
Frame frame;
Destroy_status status;
{
if (status != DESTROY_CHECKING)
{
SUN_reset();
term_init = FALSE;
}
return(NOTIFY_DONE);
}