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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcurses/base/lib_pad.c	Lines:	0	94	0.0 %
Date:	2017-11-13	Branches:	0	92	0.0 %


/* $OpenBSD: lib_pad.c,v 1.5 2010/01/12 23:22:06 nicm Exp $ */

/****************************************************************************
 * Copyright (c) 1998-2004,2006 Free Software Foundation, Inc.                   *
 *                                                                          *
 * Permission is hereby granted, free of charge, to any person obtaining a  *
 * copy of this software and associated documentation files (the            *
 * "Software"), to deal in the Software without restriction, including      *
 * without limitation the rights to use, copy, modify, merge, publish,      *
 * distribute, distribute with modifications, sublicense, and/or sell       *
 * copies of the Software, and to permit persons to whom the Software is    *
 * furnished to do so, subject to the following conditions:                 *
 *                                                                          *
 * The above copyright notice and this permission notice shall be included  *
 * in all copies or substantial portions of the Software.                   *
 *                                                                          *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
 *                                                                          *
 * Except as contained in this notice, the name(s) of the above copyright   *
 * holders shall not be used in advertising or otherwise to promote the     *
 * sale, use or other dealings in this Software without prior written       *
 * authorization.                                                           *
 ****************************************************************************/

/****************************************************************************
 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
 ****************************************************************************/

/*
 * lib_pad.c
 * newpad	-- create a new pad
 * pnoutrefresh -- refresh a pad, no update
 * pechochar	-- add a char to a pad and refresh
 */

#include <curses.priv.h>

MODULE_ID("$Id: lib_pad.c,v 1.5 2010/01/12 23:22:06 nicm Exp $")

NCURSES_EXPORT(WINDOW *)
newpad(int l, int c)
{
    WINDOW *win;
    NCURSES_CH_T *ptr;
    int i;

    T((T_CALLED("newpad(%d, %d)"), l, c));

    if (l <= 0 || c <= 0)
	returnWin(0);

    if ((win = _nc_makenew(l, c, 0, 0, _ISPAD)) == NULL)
	returnWin(0);

    for (i = 0; i < l; i++) {
	if_USE_SCROLL_HINTS(win->_line[i].oldindex = _NEWINDEX);
	if ((win->_line[i].text = typeCalloc(NCURSES_CH_T, ((size_t) c))) == 0) {
	    (void) _nc_freewin(win);
	    returnWin(0);
	}
	for (ptr = win->_line[i].text; ptr < win->_line[i].text + c; ptr++)
	    SetChar(*ptr, BLANK_TEXT, BLANK_ATTR);
    }

    returnWin(win);
}

NCURSES_EXPORT(WINDOW *)
subpad(WINDOW *orig, int l, int c, int begy, int begx)
{
    WINDOW *win = (WINDOW *) 0;

    T((T_CALLED("subpad(%d, %d)"), l, c));

    if (orig) {
	if (!(orig->_flags & _ISPAD)
	    || ((win = derwin(orig, l, c, begy, begx)) == NULL))
	    returnWin(0);
    }
    returnWin(win);
}

NCURSES_EXPORT(int)
prefresh(WINDOW *win,
	 int pminrow,
	 int pmincol,
	 int sminrow,
	 int smincol,
	 int smaxrow,
	 int smaxcol)
{
    T((T_CALLED("prefresh()")));
    if (pnoutrefresh(win, pminrow, pmincol, sminrow, smincol, smaxrow,
		     smaxcol) != ERR
	&& doupdate() != ERR) {
	returnCode(OK);
    }
    returnCode(ERR);
}

NCURSES_EXPORT(int)
pnoutrefresh(WINDOW *win,
	     int pminrow,
	     int pmincol,
	     int sminrow,
	     int smincol,
	     int smaxrow,
	     int smaxcol)
{
    NCURSES_SIZE_T i, j;
    NCURSES_SIZE_T m, n;
    NCURSES_SIZE_T pmaxrow;
    NCURSES_SIZE_T pmaxcol;

#if USE_SCROLL_HINTS
    const int my_len = 2;	/* parameterize the threshold for hardscroll */
    NCURSES_SIZE_T displaced;
    bool wide;
#endif

    T((T_CALLED("pnoutrefresh(%p, %d, %d, %d, %d, %d, %d)"),
       win, pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol));

    if (win == 0)
	returnCode(ERR);

    if (!(win->_flags & _ISPAD))
	returnCode(ERR);

    /* negative values are interpreted as zero */
    if (pminrow < 0)
	pminrow = 0;
    if (pmincol < 0)
	pmincol = 0;
    if (sminrow < 0)
	sminrow = 0;
    if (smincol < 0)
	smincol = 0;

    pmaxrow = pminrow + smaxrow - sminrow;
    pmaxcol = pmincol + smaxcol - smincol;

    T((" pminrow + smaxrow - sminrow %ld, win->_maxy %ld",
       (long) pmaxrow, (long) win->_maxy));
    T((" pmincol + smaxcol - smincol %ld, win->_maxx %ld",
       (long) pmaxcol, (long) win->_maxx));

    /*
     * Trim the caller's screen size back to the actual limits.
     */
    if (pmaxrow > win->_maxy) {
	smaxrow -= (pmaxrow - win->_maxy);
	pmaxrow = pminrow + smaxrow - sminrow;
    }
    if (pmaxcol > win->_maxx) {
	smaxcol -= (pmaxcol - win->_maxx);
	pmaxcol = pmincol + smaxcol - smincol;
    }

    if (smaxrow >= screen_lines
	|| smaxcol >= screen_columns
	|| sminrow > smaxrow
	|| smincol > smaxcol)
	returnCode(ERR);

    T(("pad being refreshed"));

#if USE_SCROLL_HINTS
    if (win->_pad._pad_y >= 0) {
	displaced = pminrow - win->_pad._pad_y
	    - (sminrow - win->_pad._pad_top);
	T(("pad being shifted by %d line(s)", displaced));
    } else
	displaced = 0;
#endif

    /*
     * For pure efficiency, we'd want to transfer scrolling information
     * from the pad to newscr whenever the window is wide enough that
     * its update will dominate the cost of the update for the horizontal
     * band of newscr that it occupies.  Unfortunately, this threshold
     * tends to be complex to estimate, and in any case scrolling the
     * whole band and rewriting the parts outside win's image would look
     * really ugly.  So.  What we do is consider the pad "wide" if it
     * either (a) occupies the whole width of newscr, or (b) occupies
     * all but at most one column on either vertical edge of the screen
     * (this caters to fussy people who put boxes around full-screen
     * windows).  Note that changing this formula will not break any code,
     * merely change the costs of various update cases.
     */
#if USE_SCROLL_HINTS
    wide = (smincol < my_len && smaxcol > (newscr->_maxx - my_len));
#endif

    for (i = pminrow, m = sminrow + win->_yoffset;
	 i <= pmaxrow && m <= newscr->_maxy;
	 i++, m++) {
	register struct ldat *nline = &newscr->_line[m];
	register struct ldat *oline = &win->_line[i];
	for (j = pmincol, n = smincol; j <= pmaxcol; j++, n++) {
	    NCURSES_CH_T ch = oline->text[j];
#if USE_WIDEC_SUPPORT
	    /*
	     * Special case for leftmost character of the displayed area.
	     * Only half of a double-width character may be visible.
	     */
	    if (j == pmincol
		&& j > 0
		&& isWidecExt(ch)) {
		SetChar(ch, L(' '), AttrOf(oline->text[j - 1]));
	    }
#endif
	    if (!CharEq(ch, nline->text[n])) {
		nline->text[n] = ch;
		CHANGED_CELL(nline, n);
	    }
	}

#if USE_SCROLL_HINTS
	if (wide) {
	    int nind = m + displaced;
	    if (oline->oldindex < 0
		|| nind < sminrow
		|| nind > smaxrow) {
		nind = _NEWINDEX;
	    } else if (displaced) {
		register struct ldat *pline = &curscr->_line[nind];
		for (j = 0; j <= my_len; j++) {
		    int k = newscr->_maxx - j;
		    if (pline->text[j] != nline->text[j]
			|| pline->text[k] != nline->text[k]) {
			nind = _NEWINDEX;
			break;
		    }
		}
	    }

	    nline->oldindex = nind;
	}
#endif /* USE_SCROLL_HINTS */
	oline->firstchar = oline->lastchar = _NOCHANGE;
	if_USE_SCROLL_HINTS(oline->oldindex = i);
    }

    /*
     * Clean up debris from scrolling or resizing the pad, so we do not
     * accidentally pick up the index value during the next call to this
     * procedure.  The only rows that should have an index value are those
     * that are displayed during this cycle.
     */
#if USE_SCROLL_HINTS
    for (i = pminrow - 1; (i >= 0) && (win->_line[i].oldindex >= 0); i--)
	win->_line[i].oldindex = _NEWINDEX;
    for (i = pmaxrow + 1; (i <= win->_maxy)
	 && (win->_line[i].oldindex >= 0); i++)
	win->_line[i].oldindex = _NEWINDEX;
#endif

    win->_begx = smincol;
    win->_begy = sminrow;

    if (win->_clear) {
	win->_clear = FALSE;
	newscr->_clear = TRUE;
    }

    /*
     * Use the pad's current position, if it will be visible.
     * If not, don't do anything; it's not an error.
     */
    if (win->_leaveok == FALSE
	&& win->_cury >= pminrow
	&& win->_curx >= pmincol
	&& win->_cury <= pmaxrow
	&& win->_curx <= pmaxcol) {
	newscr->_cury = win->_cury - pminrow + win->_begy + win->_yoffset;
	newscr->_curx = win->_curx - pmincol + win->_begx;
    }
    newscr->_leaveok = win->_leaveok;
    win->_flags &= ~_HASMOVED;

    /*
     * Update our cache of the line-numbers that we displayed from the pad.
     * We will use this on subsequent calls to this function to derive
     * values to stuff into 'oldindex[]' -- for scrolling optimization.
     */
    win->_pad._pad_y = pminrow;
    win->_pad._pad_x = pmincol;
    win->_pad._pad_top = sminrow;
    win->_pad._pad_left = smincol;
    win->_pad._pad_bottom = smaxrow;
    win->_pad._pad_right = smaxcol;

    returnCode(OK);
}

NCURSES_EXPORT(int)
pechochar(WINDOW *pad, const chtype ch)
{
    T((T_CALLED("pechochar(%p, %s)"), pad, _tracechtype(ch)));

    if (pad == 0)
	returnCode(ERR);

    if (!(pad->_flags & _ISPAD))
	returnCode(wechochar(pad, ch));

    waddch(pad, ch);
    prefresh(pad, pad->_pad._pad_y,
	     pad->_pad._pad_x,
	     pad->_pad._pad_top,
	     pad->_pad._pad_left,
	     pad->_pad._pad_bottom,
	     pad->_pad._pad_right);

    returnCode(OK);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: lib_pad.c,v 1.5 2010/01/12 23:22:06 nicm Exp $ */
2
3			/****************************************************************************
4			* Copyright (c) 1998-2004,2006 Free Software Foundation, Inc. *
5			* *
6			* Permission is hereby granted, free of charge, to any person obtaining a *
7			* copy of this software and associated documentation files (the *
8			* "Software"), to deal in the Software without restriction, including *
9			* without limitation the rights to use, copy, modify, merge, publish, *
10			* distribute, distribute with modifications, sublicense, and/or sell *
11			* copies of the Software, and to permit persons to whom the Software is *
12			* furnished to do so, subject to the following conditions: *
13			* *
14			* The above copyright notice and this permission notice shall be included *
15			* in all copies or substantial portions of the Software. *
16			* *
17			* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
18			* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
19			* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
20			* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
21			* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
22			* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
23			* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
24			* *
25			* Except as contained in this notice, the name(s) of the above copyright *
26			* holders shall not be used in advertising or otherwise to promote the *
27			* sale, use or other dealings in this Software without prior written *
28			* authorization. *
29			****************************************************************************/
30
31			/****************************************************************************
32			* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
33			* and: Eric S. Raymond <esr@snark.thyrsus.com> *
34			****************************************************************************/
35
36			/*
37			* lib_pad.c
38			* newpad -- create a new pad
39			* pnoutrefresh -- refresh a pad, no update
40			* pechochar -- add a char to a pad and refresh
41			*/
42
43			#include <curses.priv.h>
44
45			MODULE_ID("$Id: lib_pad.c,v 1.5 2010/01/12 23:22:06 nicm Exp $")
46
47			NCURSES_EXPORT(WINDOW *)
48			newpad(int l, int c)
49			{
50			WINDOW *win;
51			NCURSES_CH_T *ptr;
52			int i;
53
54			T((T_CALLED("newpad(%d, %d)"), l, c));
55
56			if (l <= 0 \|\| c <= 0)
57			returnWin(0);
58
59			if ((win = _nc_makenew(l, c, 0, 0, _ISPAD)) == NULL)
60			returnWin(0);
61
62			for (i = 0; i < l; i++) {
63			if_USE_SCROLL_HINTS(win->_line[i].oldindex = _NEWINDEX);
64			if ((win->_line[i].text = typeCalloc(NCURSES_CH_T, ((size_t) c))) == 0) {
65			(void) _nc_freewin(win);
66			returnWin(0);
67			}
68			for (ptr = win->_line[i].text; ptr < win->_line[i].text + c; ptr++)
69			SetChar(*ptr, BLANK_TEXT, BLANK_ATTR);
70			}
71
72			returnWin(win);
73			}
74
75			NCURSES_EXPORT(WINDOW *)
76			subpad(WINDOW *orig, int l, int c, int begy, int begx)
77			{
78			WINDOW win = (WINDOW ) 0;
79
80			T((T_CALLED("subpad(%d, %d)"), l, c));
81
82			if (orig) {
83			if (!(orig->_flags & _ISPAD)
84			\|\| ((win = derwin(orig, l, c, begy, begx)) == NULL))
85			returnWin(0);
86			}
87			returnWin(win);
88			}
89
90			NCURSES_EXPORT(int)
91			prefresh(WINDOW *win,
92			int pminrow,
93			int pmincol,
94			int sminrow,
95			int smincol,
96			int smaxrow,
97			int smaxcol)
98			{
99			T((T_CALLED("prefresh()")));
100			if (pnoutrefresh(win, pminrow, pmincol, sminrow, smincol, smaxrow,
101			smaxcol) != ERR
102			&& doupdate() != ERR) {
103			returnCode(OK);
104			}
105			returnCode(ERR);
106			}
107
108			NCURSES_EXPORT(int)
109			pnoutrefresh(WINDOW *win,
110			int pminrow,
111			int pmincol,
112			int sminrow,
113			int smincol,
114			int smaxrow,
115			int smaxcol)
116			{
117			NCURSES_SIZE_T i, j;
118			NCURSES_SIZE_T m, n;
119			NCURSES_SIZE_T pmaxrow;
120			NCURSES_SIZE_T pmaxcol;
121
122			#if USE_SCROLL_HINTS
123			const int my_len = 2; /* parameterize the threshold for hardscroll */
124			NCURSES_SIZE_T displaced;
125			bool wide;
126			#endif
127
128			T((T_CALLED("pnoutrefresh(%p, %d, %d, %d, %d, %d, %d)"),
129			win, pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol));
130
131			if (win == 0)
132			returnCode(ERR);
133
134			if (!(win->_flags & _ISPAD))
135			returnCode(ERR);
136
137			/* negative values are interpreted as zero */
138			if (pminrow < 0)
139			pminrow = 0;
140			if (pmincol < 0)
141			pmincol = 0;
142			if (sminrow < 0)
143			sminrow = 0;
144			if (smincol < 0)
145			smincol = 0;
146
147			pmaxrow = pminrow + smaxrow - sminrow;
148			pmaxcol = pmincol + smaxcol - smincol;
149
150			T((" pminrow + smaxrow - sminrow %ld, win->_maxy %ld",
151			(long) pmaxrow, (long) win->_maxy));
152			T((" pmincol + smaxcol - smincol %ld, win->_maxx %ld",
153			(long) pmaxcol, (long) win->_maxx));
154
155			/*
156			* Trim the caller's screen size back to the actual limits.
157			*/
158			if (pmaxrow > win->_maxy) {
159			smaxrow -= (pmaxrow - win->_maxy);
160			pmaxrow = pminrow + smaxrow - sminrow;
161			}
162			if (pmaxcol > win->_maxx) {
163			smaxcol -= (pmaxcol - win->_maxx);
164			pmaxcol = pmincol + smaxcol - smincol;
165			}
166
167			if (smaxrow >= screen_lines
168			\|\| smaxcol >= screen_columns
169			\|\| sminrow > smaxrow
170			\|\| smincol > smaxcol)
171			returnCode(ERR);
172
173			T(("pad being refreshed"));
174
175			#if USE_SCROLL_HINTS
176			if (win->_pad._pad_y >= 0) {
177			displaced = pminrow - win->_pad._pad_y
178			- (sminrow - win->_pad._pad_top);
179			T(("pad being shifted by %d line(s)", displaced));
180			} else
181			displaced = 0;
182			#endif
183
184			/*
185			* For pure efficiency, we'd want to transfer scrolling information
186			* from the pad to newscr whenever the window is wide enough that
187			* its update will dominate the cost of the update for the horizontal
188			* band of newscr that it occupies. Unfortunately, this threshold
189			* tends to be complex to estimate, and in any case scrolling the
190			* whole band and rewriting the parts outside win's image would look
191			* really ugly. So. What we do is consider the pad "wide" if it
192			* either (a) occupies the whole width of newscr, or (b) occupies
193			* all but at most one column on either vertical edge of the screen
194			* (this caters to fussy people who put boxes around full-screen
195			* windows). Note that changing this formula will not break any code,
196			* merely change the costs of various update cases.
197			*/
198			#if USE_SCROLL_HINTS
199			wide = (smincol < my_len && smaxcol > (newscr->_maxx - my_len));
200			#endif
201
202			for (i = pminrow, m = sminrow + win->_yoffset;
203			i <= pmaxrow && m <= newscr->_maxy;
204			i++, m++) {
205			register struct ldat *nline = &newscr->_line[m];
206			register struct ldat *oline = &win->_line[i];
207			for (j = pmincol, n = smincol; j <= pmaxcol; j++, n++) {
208			NCURSES_CH_T ch = oline->text[j];
209			#if USE_WIDEC_SUPPORT
210			/*
211			* Special case for leftmost character of the displayed area.
212			* Only half of a double-width character may be visible.
213			*/
214			if (j == pmincol
215			&& j > 0
216			&& isWidecExt(ch)) {
217			SetChar(ch, L(' '), AttrOf(oline->text[j - 1]));
218			}
219			#endif
220			if (!CharEq(ch, nline->text[n])) {
221			nline->text[n] = ch;
222			CHANGED_CELL(nline, n);
223			}
224			}
225
226			#if USE_SCROLL_HINTS
227			if (wide) {
228			int nind = m + displaced;
229			if (oline->oldindex < 0
230			\|\| nind < sminrow
231			\|\| nind > smaxrow) {
232			nind = _NEWINDEX;
233			} else if (displaced) {
234			register struct ldat *pline = &curscr->_line[nind];
235			for (j = 0; j <= my_len; j++) {
236			int k = newscr->_maxx - j;
237			if (pline->text[j] != nline->text[j]
238			\|\| pline->text[k] != nline->text[k]) {
239			nind = _NEWINDEX;
240			break;
241			}
242			}
243			}
244
245			nline->oldindex = nind;
246			}
247			#endif /* USE_SCROLL_HINTS */
248			oline->firstchar = oline->lastchar = _NOCHANGE;
249			if_USE_SCROLL_HINTS(oline->oldindex = i);
250			}
251
252			/*
253			* Clean up debris from scrolling or resizing the pad, so we do not
254			* accidentally pick up the index value during the next call to this
255			* procedure. The only rows that should have an index value are those
256			* that are displayed during this cycle.
257			*/
258			#if USE_SCROLL_HINTS
259			for (i = pminrow - 1; (i >= 0) && (win->_line[i].oldindex >= 0); i--)
260			win->_line[i].oldindex = _NEWINDEX;
261			for (i = pmaxrow + 1; (i <= win->_maxy)
262			&& (win->_line[i].oldindex >= 0); i++)
263			win->_line[i].oldindex = _NEWINDEX;
264			#endif
265
266			win->_begx = smincol;
267			win->_begy = sminrow;
268
269			if (win->_clear) {
270			win->_clear = FALSE;
271			newscr->_clear = TRUE;
272			}
273
274			/*
275			* Use the pad's current position, if it will be visible.
276			* If not, don't do anything; it's not an error.
277			*/
278			if (win->_leaveok == FALSE
279			&& win->_cury >= pminrow
280			&& win->_curx >= pmincol
281			&& win->_cury <= pmaxrow
282			&& win->_curx <= pmaxcol) {
283			newscr->_cury = win->_cury - pminrow + win->_begy + win->_yoffset;
284			newscr->_curx = win->_curx - pmincol + win->_begx;
285			}
286			newscr->_leaveok = win->_leaveok;
287			win->_flags &= ~_HASMOVED;
288
289			/*
290			* Update our cache of the line-numbers that we displayed from the pad.
291			* We will use this on subsequent calls to this function to derive
292			* values to stuff into 'oldindex[]' -- for scrolling optimization.
293			*/
294			win->_pad._pad_y = pminrow;
295			win->_pad._pad_x = pmincol;
296			win->_pad._pad_top = sminrow;
297			win->_pad._pad_left = smincol;
298			win->_pad._pad_bottom = smaxrow;
299			win->_pad._pad_right = smaxcol;
300
301			returnCode(OK);
302			}
303
304			NCURSES_EXPORT(int)
305			pechochar(WINDOW *pad, const chtype ch)
306			{
307			T((T_CALLED("pechochar(%p, %s)"), pad, _tracechtype(ch)));
308
309			if (pad == 0)
310			returnCode(ERR);
311
312			if (!(pad->_flags & _ISPAD))
313			returnCode(wechochar(pad, ch));
314
315			waddch(pad, ch);
316			prefresh(pad, pad->_pad._pad_y,
317			pad->_pad._pad_x,
318			pad->_pad._pad_top,
319			pad->_pad._pad_left,
320			pad->_pad._pad_bottom,
321			pad->_pad._pad_right);
322
323			returnCode(OK);
324			}