87 lines
1.9 KiB
C
87 lines
1.9 KiB
C
#ifndef lint
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#ifdef sccs
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static char sccsid[] = "@(#)pw_line.c 1.1 94/10/31";
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#endif
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#endif
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/*
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* Copyright 1986 by Sun Microsystems, Inc.
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*/
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#include <sys/types.h>
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#include <pixrect/pixrect.h>
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#include <pixrect/pr_line.h>
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#include <sunwindow/rect.h>
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#include <sunwindow/rectlist.h>
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#include <sunwindow/cms.h>
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#include <sunwindow/pixwin.h>
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#include <sunwindow/pw_util.h>
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pw_line(pw, x0, y0, x1, y1, brush, tex, op)
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int op;
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register int x0, y0, x1, y1;
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register struct pixwin *pw;
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struct pr_brush *brush;
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Pr_texture *tex;
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{
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register struct pixwin_prlist *prl;
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struct rect rdest;
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short left, top, width, height;
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/*
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* Adjust non-straight-rop operation's offset because didn't go
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* thru macro yet.
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*/
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x0 = PW_X_OFFSET(pw, x0);
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y0 = PW_Y_OFFSET(pw, y0);
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x1 = PW_X_OFFSET(pw, x1);
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y1 =PW_Y_OFFSET(pw, y1);
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/* Do std setup */
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left = min(x0, x1);
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top = min(y0, y1);
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width = max(x0, x1)+1-left;
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height = max(y0, y1)+1-top;
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if (brush && brush->width > 1) {
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left -= brush->width;
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top -= brush->width;
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width += brush->width*2;
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height += brush->width*2;
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}
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PW_SETUP(pw, rdest, DoDraw, left, top, width, height);
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/*
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* See if user wants to bypass clipping.
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*/
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if (op & PIX_DONTCLIP) {
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(void)pr_line(pw->pw_clipdata->pwcd_prmulti,
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x0, y0, x1, y1, brush, tex, op);
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goto TryRetained;
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}
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/*
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* Loop and clip
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*/
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for (prl = pw->pw_clipdata->pwcd_prl;prl;prl = prl->prl_next) {
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(void)pr_line(prl->prl_pixrect,
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x0-prl->prl_x, y0-prl->prl_y, x1-prl->prl_x, y1-prl->prl_y,
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brush, tex, op);
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}
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TryRetained:
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/*
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* Unlock screen
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*/
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(void)pw_unlock(pw);
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/*
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* Write to retained pixrect if have one.
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*/
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DoDraw:
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if (pw->pw_prretained) {
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(void)pr_line(pw->pw_prretained,
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PW_RETAIN_X_OFFSET(pw, x0), PW_RETAIN_Y_OFFSET(pw, y0),
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PW_RETAIN_X_OFFSET(pw, x1), PW_RETAIN_Y_OFFSET(pw, y1),
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brush, tex, op);
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}
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return;
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} /* pw_line */
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