93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
#ifndef lint
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#ifdef sccs
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static char sccsid[] = "@(#)pw_read.c 1.1 94/10/31 Copyr 1985 Sun Micro";
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#endif
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#endif
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/*
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* Copyright (c) 1985 by Sun Microsystems, Inc.
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*/
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/*
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* Pw_read.c: Implement the read function of pw_rop of the pixwin.h interface.
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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 <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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pwo_read(pr, xr, yr, width, height, op, pw, xw, yw)
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register struct pixwin *pw;
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register int xw, yw, width, height;
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int op, xr, yr;
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struct pixrect *pr;
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{
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struct rect rintersect, rsrc;
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(void)rl_free(&pw->pw_fixup);
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/*
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* Read from retained pixrect if have one.
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*/
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if (pw->pw_prretained) {
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(void)pr_rop(pr, xr, yr, width, height, op, pw->pw_prretained,
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PW_RETAIN_X_OFFSET(pw, xw), PW_RETAIN_Y_OFFSET(pw, yw));
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return;
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}
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/*
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* Construct window relative rectangle that will be reading from
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*/
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rect_construct(&rsrc, xw, yw, width, height);
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rsrc.r_left = PW_X_FROM_WIN(pw, rsrc.r_left);
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rsrc.r_top = PW_Y_FROM_WIN(pw, rsrc.r_top);
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(void)pw_lock(pw, &rsrc);
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rsrc.r_left = PW_X_TO_WIN(pw, rsrc.r_left);
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rsrc.r_top = PW_Y_TO_WIN(pw, rsrc.r_top);
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/*
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* Don't clip if op flag is on
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*/
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if (op & PIX_DONTCLIP) {
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(void)pr_rop(pr, xr, yr, width, height, op,
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pw->pw_clipdata->pwcd_prmulti, xw, yw);
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goto Unlock;
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}
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/*
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* Loop and clip
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*/
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pw_begincliploop(pw, &rsrc, &rintersect);
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(void)pr_rop(pr, xr+(rintersect.r_left-rsrc.r_left),
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yr+(rintersect.r_top-rsrc.r_top),
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rintersect.r_width, rintersect.r_height,
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op, pw->pw_clipdata->pwcd_prmulti,
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rintersect.r_left, rintersect.r_top);
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pw_endcliploop();
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Unlock:
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(void)pw_unlock(pw);
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/*
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* Figure fixup list
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*/
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if (pw->pw_clipdata->pwcd_damagedid)
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/*
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* Simply make the fixup list all of the bits read.
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* (Uncommon case. See pw_copy for explanation).
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*/
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(void)rl_initwithrect(&rsrc, &pw->pw_fixup);
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else
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/*
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* Make fixup all unaccessible bits of window.
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*/
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pw_initfixup(pw, &pw->pw_fixup);
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/*
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* The intersection of rsrc and the list of rectangles
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* that couldn't be read will give another list
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* of rectangles whose contents need to be recreated.
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*/
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(void)rl_rectintersection(&rsrc, &pw->pw_fixup, &pw->pw_fixup);
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PW_FIXUP_TRANSLATE(pw);
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return;
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}
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