diff options
Diffstat (limited to 'layer.c')
| -rw-r--r-- | layer.c | 1230 |
1 files changed, 1230 insertions, 0 deletions
@@ -0,0 +1,1230 @@ +/* Copyright (c) 2008-2017 + * Juergen Weigert <jnweiger@immd4.informatik.uni-erlangen.de> + * Michael Schroeder <mlschroe@immd4.informatik.uni-erlangen.de> + * Micah Cowan <micah@cowan.name> + * Sadrul Habib Chowdhury <sadrul@users.sourceforge.net> + * + * Copyright (c) 1993-2002, 2003, 2005, 2006, 2007 + * Juergen Weigert <jnweiger@immd4.informatik.uni-erlangen.de> + * Michael Schroeder <mlschroe@immd4.informatik.uni-erlangen.de> + * + * Copyright (c) 1987 Oliver Laumann + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program (see the file COPYING); if not, see + * http://www.gnu.org/licenses/, or contact Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA + * + **************************************************************** + */ + +#include <sys/types.h> + +#include "config.h" +#include "screen.h" +#include "mark.h" +#include "extern.h" +#include "braille.h" + +extern struct display *display, *displays; + +extern struct mline mline_blank, mline_null; +extern struct mchar mchar_blank, mchar_null; + +extern struct layer *flayer; /* sigh */ +extern struct LayFuncs WinLf; +extern struct LayFuncs BlankLf; + + +static struct mline *mloff __P((struct mline *, int)); + +/* + * Layer subsystem. + * + * ...here is all the clipping code... beware! + * + * XXX: add some speedup code! + * + */ + +static struct mline *mloff(struct mline *ml, int off) +{ + static struct mline mml; + if (ml == 0) + return 0; + + mml.image = ml->image + off; + mml.attr = ml->attr + off; +#ifdef FONT + mml.font = ml->font + off; + mml.fontx = ml->fontx + off; +#endif + +#ifdef COLOR + mml.color = ml->color + off; +# ifdef COLORS256 + mml.colorx = ml->colorx + off; +# endif +#endif + + return &mml; +} + +#ifdef UTF8 +# define RECODE_MCHAR(mc) ((l->l_encoding == UTF8) != (D_encoding == UTF8) ? recode_mchar(mc, l->l_encoding, D_encoding) : (mc)) +# define RECODE_MLINE(ml) ((l->l_encoding == UTF8) != (D_encoding == UTF8) ? recode_mline(ml, l->l_width, l->l_encoding, D_encoding) : (ml)) +#else +# define RECODE_MCHAR(mc) (mc) +# define RECODE_MLINE(ml) (ml) +#endif + +#define FOR_EACH_UNPAUSED_CANVAS(l, fn) for (cv = (l)->l_cvlist; cv; cv = cv->c_lnext) \ + { \ + if ((l)->l_pause.d && cv->c_slorient) \ + continue; \ + fn \ + } + +void LGotoPos(struct layer *l, int x, int y) +{ + struct canvas *cv; + struct viewport *vp; + int x2, y2; + + if (l->l_pause.d) + LayPauseUpdateRegion(l, x, x, y, y); + +#ifdef HAVE_BRAILLE + if (bd.bd_refreshing) + return; +#endif + FOR_EACH_UNPAUSED_CANVAS(l, + { + display = cv->c_display; + if (D_blocked) + continue; + if (cv != D_forecv) + continue; + x2 = x + cv->c_xoff; + y2 = y + cv->c_yoff; + debug2("---LGotoPos %d %d\n", x2, y2); + if (x2 < cv->c_xs) + x2 = cv->c_xs; + if (y2 < cv->c_ys) + y2 = cv->c_ys; + if (x2 > cv->c_xe) + x2 = cv->c_xe; + if (y2 > cv->c_ye) + y2 = cv->c_ye; + for (vp = cv->c_vplist; vp; vp = vp->v_next) { + if (x2 < vp->v_xs || x2 > vp->v_xe) + continue; + if (y2 < vp->v_ys || y2 > vp->v_ye) + continue; + GotoPos(x2, y2); + break; + } + } + ); +} + +void LScrollH(struct layer *l, int n, int y, int xs, int xe, int bce, struct mline *ol) +{ + struct canvas *cv; + struct viewport *vp; + int y2, xs2, xe2; + + if (n == 0) + return; + if (l->l_pause.d) + LayPauseUpdateRegion(l, xs, xe, y, y); + + FOR_EACH_UNPAUSED_CANVAS(l, + for (vp = cv->c_vplist; vp; vp = vp->v_next) { + y2 = y + vp->v_yoff; + if (y2 < vp->v_ys || y2 > vp->v_ye) + continue; + xs2 = xs + vp->v_xoff; + xe2 = xe + vp->v_xoff; + if (xs2 < vp->v_xs) + xs2 = vp->v_xs; + if (xe2 > vp->v_xe) + xe2 = vp->v_xe; + if (xs2 > xe2) + continue; + display = cv->c_display; + if (D_blocked) + continue; + ScrollH(y2, xs2, xe2, n, bce, ol ? mloff(ol, -vp->v_xoff) : 0); + if (xe2 - xs2 == xe - xs) + continue; + if (n > 0) { + xs2 = xe2 + 1 - n; + xe2 = xe + vp->v_xoff - n; + } + else { + xe2 = xs2 - 1 - n; + xs2 = xs + vp->v_xoff - n; + } + + if (xs2 < vp->v_xs) + xs2 = vp->v_xs; + if (xe2 > vp->v_xe) + xe2 = vp->v_xe; + if (xs2 <= xe2) + RefreshArea(xs2, y2, xe2, y2, 1); + } + ); +} + +void LScrollV(struct layer *l, int n, int ys, int ye, int bce) +{ + struct canvas *cv; + struct viewport *vp; + int ys2, ye2, xs2, xe2; + if (n == 0) + return; + if (l->l_pause.d) + LayPauseUpdateRegion(l, 0, l->l_width - 1, ys, ye); + FOR_EACH_UNPAUSED_CANVAS(l, + for (vp = cv->c_vplist; vp; vp = vp->v_next) { + xs2 = vp->v_xoff; + xe2 = l->l_width - 1 + vp->v_xoff; + ys2 = ys + vp->v_yoff; + ye2 = ye + vp->v_yoff; + + if (xs2 < vp->v_xs) + xs2 = vp->v_xs; + if (xe2 > vp->v_xe) + xe2 = vp->v_xe; + if (ys2 < vp->v_ys) + ys2 = vp->v_ys; + if (ye2 > vp->v_ye) + ye2 = vp->v_ye; + if (ys2 > ye2 || xs2 > xe2) + continue; + display = cv->c_display; + if (D_blocked) + continue; +#if 0 + ScrollV(xs2, ys2, xe2, ye2, n, bce); +#else + ScrollV(vp->v_xs, ys2, vp->v_xe, ye2, n, bce); +#endif + + debug2("LScrollV: %d %d", ys, ye); + debug2(" -> %d %d\n", ys2, ye2); + if (ye2 - ys2 == ye - ys) + continue; + if (n > 0) { + ys2 = ye2 + 1 - n; + ye2 = ye + vp->v_yoff - n; + } + else { + ye2 = ys2 - 1 - n; + ys2 = ys + vp->v_yoff - n; + } + + debug2("LScrollV: - %d %d\n", ys2, ye2); + if (ys2 < vp->v_ys) + ys2 = vp->v_ys; + if (ye2 > vp->v_ye) + ye2 = vp->v_ye; + debug2("LScrollV: - %d %d\n", ys2, ye2); + if (ys2 <= ye2) + RefreshArea(xs2, ys2, xe2, ye2, 1); + } + ); +} + +void LInsChar(struct layer *l, struct mchar *c, int x, int y, struct mline *ol) +{ + struct canvas *cv; + struct viewport *vp; + int xs2, xe2, y2, f; + struct mchar *c2, cc; + struct mline *rol; + + if (l->l_pause.d) + LayPauseUpdateRegion(l, x, l->l_width - 1, y, y); + FOR_EACH_UNPAUSED_CANVAS(l, + for (vp = cv->c_vplist; vp; vp = vp->v_next) { + y2 = y + vp->v_yoff; + if (y2 < vp->v_ys || y2 > vp->v_ye) + continue; + xs2 = x + vp->v_xoff; + xe2 = l->l_width - 1 + vp->v_xoff; + c2 = c; + f = 0; + if (xs2 < vp->v_xs) { + xs2 = vp->v_xs; + c2 = &mchar_blank; + if (ol) { + int i = xs2 - vp->v_xoff - 1; + if (i >= 0 && i < l->l_width) { + copy_mline2mchar(&cc, ol, i); + c2 = &cc; + } + } + else + f = 1; + } + + if (xe2 > vp->v_xe) + xe2 = vp->v_xe; + if (xs2 > xe2) + continue; + display = cv->c_display; + if (D_blocked) + continue; + rol = RECODE_MLINE(ol); + InsChar(RECODE_MCHAR(c2), xs2, xe2, y2, mloff(rol, -vp->v_xoff)); + if (f) + RefreshArea(xs2, y2, xs2, y2, 1); + } + ); +} + + +void LPutChar(struct layer *l, struct mchar *c, int x, int y) +{ + struct canvas *cv; + struct viewport *vp; + int x2, y2; + +#ifdef HAVE_BRAILLE + if (bd.bd_refreshing) { + BPutChar(l, c, x, y); + return; + } +#endif + + if (l->l_pause.d) + LayPauseUpdateRegion(l, x, + +#ifdef DW_CHARS + x + (c->mbcs ? 1 : 0) +#else + x +#endif + , y, y); + + + FOR_EACH_UNPAUSED_CANVAS(l, + { + display = cv->c_display; + if (D_blocked) + continue; + for (vp = cv->c_vplist; vp; vp = vp->v_next) { + y2 = y + vp->v_yoff; + if (y2 < vp->v_ys || y2 > vp->v_ye) + continue; + x2 = x + vp->v_xoff; + if (x2 < vp->v_xs || x2 > vp->v_xe) + continue; + PutChar(RECODE_MCHAR(c), x2, y2); + break; + } + } + ); +} + + +void LPutStr(struct layer *l, char *s, int n, struct mchar *r, int x, int y) +{ + struct canvas *cv; + struct viewport *vp; + char *s2; + int xs2, xe2, y2; + + if (x + n > l->l_width) + n = l->l_width - x; + +#ifdef HAVE_BRAILLE + if (bd.bd_refreshing) { + BPutStr(l, s, n, r, x, y); + return; + } +#endif + + if (l->l_pause.d) + LayPauseUpdateRegion(l, x, x + n - 1, y, y); + + FOR_EACH_UNPAUSED_CANVAS(l, + for (vp = cv->c_vplist; vp; vp = vp->v_next) { + y2 = y + vp->v_yoff; + if (y2 < vp->v_ys || y2 > vp->v_ye) + continue; + xs2 = x + vp->v_xoff; + xe2 = xs2 + n - 1; + if (xs2 < vp->v_xs) + xs2 = vp->v_xs; + if (xe2 > vp->v_xe) + xe2 = vp->v_xe; + if (xs2 > xe2) + continue; + display = cv->c_display; + if (D_blocked) + continue; + GotoPos(xs2, y2); + SetRendition(r); + s2 = s + xs2 - x - vp->v_xoff; + +#ifdef UTF8 + if (D_encoding == UTF8 && l->l_encoding != UTF8 && (r->font || r->fontx || l->l_encoding)) { + struct mchar mc; + mc = *r; + while (xs2 <= xe2) { + mc.image = *s2++; + PutChar(RECODE_MCHAR(&mc), xs2++, y2); + } + continue; + } +#endif + + while (xs2++ <= xe2) + PUTCHARLP(*s2++); + } + ); +} + + +void LPutWinMsg(struct layer *l, char *s, int n, struct mchar *r, int x, int y) +{ + struct canvas *cv; + struct viewport *vp; + int xs2, xe2, y2, len, len2; + struct mchar or; + + if (x + n > l->l_width) + n = l->l_width - x; + +#ifdef HAVE_BRAILLE + if (bd.bd_refreshing) { + BPutStr(l, s, n, r, x, y); + return; + } +#endif + + if (l->l_pause.d) + LayPauseUpdateRegion(l, x, x + n - 1, y, y); + + len = strlen(s); + if (len > n) + len = n; + + FOR_EACH_UNPAUSED_CANVAS(l, + for (vp = cv->c_vplist; vp; vp = vp->v_next) { + y2 = y + vp->v_yoff; + if (y2 < vp->v_ys || y2 > vp->v_ye) + continue; + xs2 = x + vp->v_xoff; + xe2 = xs2 + n - 1; + if (xs2 < vp->v_xs) + xs2 = vp->v_xs; + if (xe2 > vp->v_xe) + xe2 = vp->v_xe; + if (xs2 > xe2) + continue; + display = cv->c_display; + if (D_blocked) + continue; + GotoPos(xs2, y2); + SetRendition(r); + len2 = xe2 - (x + vp->v_xoff) + 1; + if (len2 > len) + len2 = len; + PutWinMsg(s, xs2 - x - vp->v_xoff, len2); + xs2 = x + vp->v_xoff + len2; + if (xs2 < vp->v_xs) + xs2 = vp->v_xs; + or = D_rend; + GotoPos(xs2, y2); + SetRendition(&or); + while (xs2++ <= xe2) + PUTCHARLP(' '); + } + ); +} + + +void LClearLine(struct layer *l, int y, int xs, int xe, int bce, struct mline *ol) +{ + struct canvas *cv; + struct viewport *vp; + int y2, xs2, xe2; + + /* check for magic margin condition */ + if (xs >= l->l_width) + xs = l->l_width - 1; + if (xe >= l->l_width) + xe = l->l_width - 1; + if (l->l_pause.d) + LayPauseUpdateRegion(l, xs, xe, y, y); + + FOR_EACH_UNPAUSED_CANVAS(l, + for (vp = cv->c_vplist; vp; vp = vp->v_next) { + xs2 = xs + vp->v_xoff; + xe2 = xe + vp->v_xoff; + y2 = y + vp->v_yoff; + if (y2 < vp->v_ys || y2 > vp->v_ye) + continue; + if (xs2 < vp->v_xs) + xs2 = vp->v_xs; + if (xe2 > vp->v_xe) + xe2 = vp->v_xe; + if (xs2 > xe2) + continue; + display = cv->c_display; + if (D_blocked) + continue; + ClearLine(ol ? mloff(RECODE_MLINE(ol), -vp->v_xoff) : (struct mline *)0, y2, xs2, xe2, bce); + } + ); +} + +void LClearArea(struct layer *l, int xs, int ys, int xe, int ye, int bce, int uself) +{ + struct canvas *cv; + struct viewport *vp; + int xs2, ys2, xe2, ye2; + +#ifdef HAVE_BRAILLE + if (bd.bd_refreshing) + return; +#endif + + /* Check for zero-height window */ + if (ys < 0 || ye < ys) + return; + + /* check for magic margin condition */ + if (xs >= l->l_width) + xs = l->l_width - 1; + if (xe >= l->l_width) + xe = l->l_width - 1; + if (l->l_pause.d) + LayPauseUpdateRegion(l, xs, xe, ys, ye); + + FOR_EACH_UNPAUSED_CANVAS(l, + { + display = cv->c_display; + if (D_blocked) + continue; + for (vp = cv->c_vplist; vp; vp = vp->v_next) { + xs2 = xs + vp->v_xoff; + xe2 = xe + vp->v_xoff; + ys2 = ys + vp->v_yoff; + ye2 = ye + vp->v_yoff; + + if (xs2 < vp->v_xs) + xs2 = vp->v_xs; + if (xe2 > vp->v_xe) + xe2 = vp->v_xe; + if (xs2 > vp->v_xe) + ys2++; + if (xe2 < vp->v_xs) + ye2--; + if (ys2 < vp->v_ys) + ys2 = vp->v_ys; + if (ye2 > vp->v_ye) + ye2 = vp->v_ye; + if (ys2 > ye2) + continue; +#if 0 + xcs = vp->v_xoff; + xce = l->l_width - 1 + vp->v_xoff; + if (xcs < vp->v_xs) + xcs = vp->v_xs; + if (xce > vp->v_xe) + xce = vp->v_xe; + if (xcs > xce) + continue; + if (ys2 != ys + vp->v_yoff) + xs2 = xcs; + if (ye2 != ye + vp->v_yoff) + xe2 = xce; + display = cv->c_display; + ClearArea(xs2, ys2, xcs, xce, xe2, ye2, bce, uself); +#else + + if (xs == 0 || ys2 != ys + vp->v_yoff) + xs2 = vp->v_xs; + if (xe == l->l_width - 1 || ye2 != ye + vp->v_yoff) + xe2 = vp->v_xe; + display = cv->c_display; + ClearArea(xs2, ys2, vp->v_xs, vp->v_xe, xe2, ye2, bce, uself); + + if (xe == l->l_width - 1 && xe2 > vp->v_xoff + xe) { + int y; + SetRendition(&mchar_blank); + for (y = ys2; y <= ye2; y++) { + GotoPos(xe + vp->v_xoff + 1, y); + PUTCHARLP('|'); + } + } +#endif + } + } + ); +} + + +void LCDisplayLine(struct layer *l, struct mline *ml, int y, int xs, int xe, int isblank) +{ + struct canvas *cv; + struct viewport *vp; + int xs2, xe2, y2; + +#ifdef HAVE_BRAILLE + if (bd.bd_refreshing) { + BCDisplayLine(l, ml, y, xs, xe, isblank); + return; + } +#endif + + if (l->l_pause.d) + LayPauseUpdateRegion(l, xs, xe, y, y); + + FOR_EACH_UNPAUSED_CANVAS(l, + { + display = cv->c_display; + if (D_blocked) + continue; + for (vp = cv->c_vplist; vp; vp = vp->v_next) { + xs2 = xs + vp->v_xoff; + xe2 = xe + vp->v_xoff; + y2 = y + vp->v_yoff; + if (y2 < vp->v_ys || y2 > vp->v_ye) + continue; + if (xs2 < vp->v_xs) + xs2 = vp->v_xs; + if (xe2 > vp->v_xe) + xe2 = vp->v_xe; + if (xs2 > xe2) + continue; + display = cv->c_display; + debug3("LCDisplayLine: DisplayLine %d, %d-%d", y2, xs2, xe2); + debug1(" mloff = %d\n", -vp->v_xoff); + DisplayLine(isblank ? &mline_blank : &mline_null, mloff(RECODE_MLINE(ml), -vp->v_xoff), y2, xs2, xe2); + } + } + ); +} + + +void LCDisplayLineWrap(struct layer *l, struct mline *ml, int y, int from, int to, int isblank) +{ + struct mchar nc; + copy_mline2mchar(&nc, ml, 0); + +#ifdef DW_CHARS + if (dw_left(ml, 0, l->l_encoding)) { + nc.mbcs = ml->image[1]; + from++; + } +#endif + + LWrapChar(l, &nc, y - 1, -1, -1, 0); + from++; + if (from <= to) + LCDisplayLine(l, ml, y, from, to, isblank); +} + + +void LSetRendition(struct layer *l, struct mchar *r) +{ + struct canvas *cv; + + for (cv = l->l_cvlist; cv; cv = cv->c_lnext) { + display = cv->c_display; + if (D_blocked) + continue; + SetRendition(r); + } +} + + +void LWrapChar(struct layer *l, struct mchar *c, int y, int top, int bot, int ins) +{ + struct canvas *cv, *cvlist, *cvlnext; + struct viewport *vp, *evp, **vpp; + int yy, y2, yy2, top2, bot2; + int bce; + + if (l->l_pause.d) + /* XXX: 'y'? */ + LayPauseUpdateRegion(l, 0, l->l_width - 1, top, bot); + +#ifdef COLOR + bce = rend_getbg(c); +#else + bce = 0; +#endif + + if (y != bot) { + /* simple case: no scrolling */ + /* cursor after wrapping */ + yy = y == l->l_height - 1 ? y : y + 1; + + FOR_EACH_UNPAUSED_CANVAS(l, + { + y2 = 0; /* gcc -Wall */ + display = cv->c_display; + if (D_blocked) + continue; + + /* find the viewport of the wrapped character */ + for (vp = cv->c_vplist; vp; vp = vp->v_next) { + y2 = y + vp->v_yoff; + yy2 = yy + vp->v_yoff; + if (yy2 >= vp->v_ys && yy2 <= vp->v_ye && vp->v_xoff >= vp->v_xs && vp->v_xoff <= vp->v_xe) + break; + } + + if (vp == 0) + continue; /* nothing to do, character not visible */ + + /* find the viewport of the character at the end of the line*/ + for (evp = cv->c_vplist; evp; evp = evp->v_next) + if (y2 >= evp->v_ys && y2 <= evp->v_ye && evp->v_xoff + l->l_width - 1 >= evp->v_xs && evp->v_xoff + l->l_width - 1 <= evp->v_xe) + break; /* gotcha! */ + + if (evp == 0 || (ins && vp->v_xoff + l->l_width - 1 > vp->v_ye)) { + /* no wrapping possible */ + debug("LWrap: can't wrap!\n"); + cvlist = l->l_cvlist; + cvlnext = cv->c_lnext; + l->l_cvlist = cv; + cv->c_lnext = 0; + + if (ins) + LInsChar(l, c, 0, yy, 0); + else + LPutChar(l, c, 0, yy); + + l->l_cvlist = cvlist; + cv->c_lnext = cvlnext; + } + else + WrapChar(RECODE_MCHAR(c), vp->v_xoff + l->l_width, y2, vp->v_xoff, -1, vp->v_xoff + l->l_width - 1, -1, ins); + }); + } + else + { + /* hard case: scroll up*/ + FOR_EACH_UNPAUSED_CANVAS(l, + { + display = cv->c_display; + if (D_blocked) + continue; + + /* search for wrap viewport */ + for (vpp = &cv->c_vplist; (vp = *vpp); vpp = &vp->v_next) { + yy2 = bot + vp->v_yoff; + if (yy2 >= vp->v_ys && yy2 <= vp->v_ye && vp->v_xoff >= vp->v_xs && vp->v_xoff + l->l_width - 1 <= vp->v_xe) + break; + } + + if (vp) { + /* great, can use Wrap on the vp */ + /* temporarily remove vp from cvlist */ + *vpp = vp->v_next; + } + + if (cv->c_vplist) { + /* scroll all viewports != vp */ + cvlist = l->l_cvlist; + cvlnext = cv->c_lnext; + l->l_cvlist = cv; + cv->c_lnext = 0; + LScrollV(l, 1, top, bot, bce); + if (!vp) { + if (ins) + LInsChar(l, c, 0, bot, 0); + else + LPutChar(l, c, 0, bot); + } + + l->l_cvlist = cvlist; + cv->c_lnext = cvlnext; + } + if (vp) { + /* add vp back to cvlist */ + *vpp = vp; + top2 = top + vp->v_yoff; + bot2 = bot + vp->v_yoff; + if (top2 < vp->v_ys) + top2 = vp->v_ys; + WrapChar(RECODE_MCHAR(c), vp->v_xoff + l->l_width, bot2, vp->v_xoff, top2, vp->v_xoff + l->l_width - 1, bot2, ins); + } + }); + } +} + + +void LCursorVisibility(struct layer *l, int vis) +{ + struct canvas *cv; + for (cv = l->l_cvlist; cv; cv = cv->c_lnext) { + display = cv->c_display; + if (D_blocked) + continue; + if (cv != D_forecv) + continue; + CursorVisibility(vis); + } +} + + +void LSetFlow(struct layer *l, int flow) +{ + struct canvas *cv; + for (cv = l->l_cvlist; cv; cv = cv->c_lnext) { + display = cv->c_display; + if (cv != D_forecv) + continue; + SetFlow(flow); + } +} + + +void LKeypadMode(struct layer *l, int on) +{ + struct canvas *cv; + for (cv = l->l_cvlist; cv; cv = cv->c_lnext) { + display = cv->c_display; + if (D_blocked) + continue; + if (cv != D_forecv) + continue; + KeypadMode(on); + } +} + + +void LCursorkeysMode(struct layer *l, int on) +{ + struct canvas *cv; + for (cv = l->l_cvlist; cv; cv = cv->c_lnext) { + display = cv->c_display; + if (D_blocked) + continue; + if (cv != D_forecv) + continue; + CursorkeysMode(on); + } +} + + +void LMouseMode(struct layer *l, int on) +{ + struct canvas *cv; + for (cv = l->l_cvlist; cv; cv = cv->c_lnext) { + display = cv->c_display; + if (D_blocked) + continue; + if (cv != D_forecv) + continue; + MouseMode(on); + } +} + +void LClearAll(struct layer *l, int uself) +{ + LClearArea(l, 0, 0, l->l_width - 1, l->l_height - 1, 0, uself); +} + + +void LRefreshAll(struct layer *l, int isblank) +{ + struct layer *oldflayer; + int y; + + debug1("LRefreshAll isblank=%d\n", isblank); + oldflayer = flayer; + flayer = l; + if (!isblank) + LClearArea(l, 0, 0, l->l_width - 1, l->l_height - 1, 0, 0); + /* signal full refresh */ + LayRedisplayLine(-1, -1, -1, 1); + for (y = 0; y < l->l_height; y++) + LayRedisplayLine(y, 0, l->l_width - 1, 1); + flayer = oldflayer; +} + +void +/*VARARGS2*/ +#if defined(USEVARARGS) && defined(__STDC__) +LMsg(int err, const char *fmt, VA_DOTS) +#else +LMsg(err, fmt, VA_DOTS) +int err; +const char *fmt; +VA_DECL +#endif +{ + VA_LIST(ap) + char buf[MAXPATHLEN*2]; + char *p = buf; + struct canvas *cv; + + VA_START(ap, fmt); + fmt = DoNLS(fmt); + (void)vsnprintf(p, sizeof(buf) - 100, fmt, VA_ARGS(ap)); + VA_END(ap); + + if (err) { + p += strlen(p); + *p++ = ':'; + *p++ = ' '; + strncpy(p, strerror(err), buf + sizeof(buf) - p - 1); + buf[sizeof(buf) - 1] = 0; + } + + debug2("LMsg('%s') (%#x);\n", buf, (unsigned int)flayer); + for (display = displays; display; display = display->d_next) { + for (cv = D_cvlist; cv; cv = cv->c_next) + if (cv->c_layer == flayer) + break; + + if (cv == 0) + continue; + MakeStatus(buf); + } +} + + +/*******************************************************************/ +/*******************************************************************/ + +/* + * Layer creation / removal + */ + +void KillLayerChain(struct layer *lay) +{ + struct canvas *cv, *ncv; + struct layer *l, *oldflayer; + + oldflayer = flayer; + debug1("KillLayerChain %#x\n", lay); + for (l = lay; l; l = l->l_next) { + if (l->l_layfn == &WinLf || l->l_layfn == &BlankLf) + break; + debug1("- killing %#x\n", l); + if (oldflayer == l) + oldflayer = 0; + for (cv = l->l_cvlist; cv; cv = ncv) { + ncv = cv->c_lnext; + cv->c_layer = 0; + cv->c_lnext = 0; + } + } + flayer = lay; + while (flayer != l) + ExitOverlayPage(); + flayer = oldflayer; +} + + + +int InitOverlayPage(int datasize, struct LayFuncs *lf, int block) +{ + char *data; + struct layer *newlay; + struct canvas *cv, *cvp, **cvpp; + struct win *p; + + ASSERT(flayer); + + cv = 0; + if (display && D_forecv->c_layer == flayer) + cv = D_forecv; /* work only on this cv! */ + + if ((newlay = (struct layer *)calloc(1, sizeof(struct layer))) == 0) { + Msg(0, "No memory for layer struct"); + return -1; + } + debug2("Entering new layer on top of %#x: %#x\n", (unsigned int)flayer, newlay); + data = 0; + if (datasize) { + if ((data = calloc(1, datasize)) == 0) { + free((char *)newlay); + Msg(0, "No memory for layer data"); + return -1; + } + } + p = Layer2Window(flayer); + + if (p && (p->w_savelayer == flayer || (block && flayer->l_next == 0))) { + if (p->w_savelayer && p->w_savelayer != flayer && p->w_savelayer->l_cvlist == 0) + KillLayerChain(p->w_savelayer); + p->w_savelayer = newlay; + } + + if (cv && flayer->l_next == 0 && !block) { + struct display *olddisplay = display; + display = cv->c_display; + RemoveStatus(); + display = olddisplay; + + /* new branch -> just get canvas vps */ + for (cvpp = &flayer->l_cvlist; (cvp = *cvpp); cvpp = &cvp->c_lnext) + if (cvp == cv) + break; + + ASSERT(cvp); + *cvpp = cv->c_lnext; + newlay->l_cvlist = cv; + cv->c_lnext = 0; + cv->c_layer = newlay; + } + else { + LAY_DISPLAYS(flayer, RemoveStatus()); + if (block) + debug("layer is blocking\n"); + if (block && flayer->l_layfn == &WinLf) { + debug("...and is first, so window gets blocked\n"); + ASSERT(p->w_blocked == 0); + p->w_blocked++; + newlay->l_blocking = 1; + } + + /* change all canvases */ + newlay->l_cvlist = flayer->l_cvlist; + + for (cvp = newlay->l_cvlist; cvp; cvp = cvp->c_lnext) + cvp->c_layer = newlay; + flayer->l_cvlist = 0; + } + newlay->l_width = flayer->l_width; + newlay->l_height = flayer->l_height; + newlay->l_encoding = 0; + newlay->l_layfn = lf; + newlay->l_data = data; + newlay->l_next = flayer; + newlay->l_bottom = flayer->l_bottom; + flayer = newlay; + LayRestore(); + return 0; +} + + +extern struct layout *layouts; + +void ExitOverlayPage() +{ + struct layer *oldlay; + struct win *p; + int doredisplay = 0; + struct canvas *cv, *ocv; + struct layout *lay; + + ASSERT(flayer); + debug1("Exiting layer %#x\n", (unsigned int)flayer); + oldlay = flayer; + if (oldlay->l_data) { + if (oldlay->l_layfn->lf_LayFree) + LayFree(oldlay->l_data); + free(oldlay->l_data); + } + p = Layer2Window(flayer); + + flayer = oldlay->l_next; + if (flayer->l_layfn == &WinLf) { + if (oldlay->l_blocking) { + ASSERT(p->w_blocked > 0); + p->w_blocked--; + debug1("layer was blocking, -> w_blocked now %d\n", p->w_blocked); + } + + /* don't warp dead layers: check cvlist */ + if (p->w_blocked && p->w_savelayer && p->w_savelayer != flayer && oldlay->l_cvlist) { + debug("warping to top of blocking chain!\n"); + /* warp ourself into savelayer */ + flayer = p->w_savelayer; + doredisplay = 1; + } + } + + if (p && p->w_savelayer == oldlay) + p->w_savelayer = flayer; +#ifdef COPY_PASTE + if (p && oldlay == p->w_paster.pa_pastelayer) + p->w_paster.pa_pastelayer = 0; +#endif + + for (lay = layouts; lay; lay = lay->lay_next) + for (cv = lay->lay_cvlist; cv; cv = cv->c_next) + if (cv->c_layer == oldlay) + cv->c_layer = flayer; + + /* add all canvases back into next layer's canvas list */ + for (ocv = 0, cv = oldlay->l_cvlist; cv; cv = cv->c_lnext) { + cv->c_layer = flayer; + ocv = cv; + } + if (ocv) { + cv = flayer->l_cvlist; + ocv->c_lnext = 0; + flayer->l_cvlist = oldlay->l_cvlist; + + /* redisplay only the warped cvs */ + if (doredisplay) + LRefreshAll(flayer, 0); + ocv->c_lnext = cv; + } + oldlay->l_cvlist = 0; + LayerCleanupMemory(oldlay); + free((char *)oldlay); + LayRestore(); + LaySetCursor(); +} + +int LayProcessMouse(struct layer *l, unsigned char ch) +{ + /* XXX: Make sure the layer accepts mouse events */ + int len; + if (l->l_mouseevent.len >= sizeof(l->l_mouseevent.buffer)) + return -1; + + len = l->l_mouseevent.len++; + l->l_mouseevent.buffer[len] = (len > 0 ? ch - 33 : ch); + return (l->l_mouseevent.len == sizeof(l->l_mouseevent.buffer)); +} + +void LayProcessMouseSwitch(struct layer *l, int s) +{ + if ((l->l_mouseevent.start = s)) + l->l_mouseevent.len = 0; +} + + +void LayPause(struct layer *layer, int pause) +{ + struct canvas *cv; + int line; + struct win *win; + pause = !!pause; + + if (layer->l_pause.d == pause) + return; + + if ((layer->l_pause.d = pause)) { + /* Start pausing */ + layer->l_pause.top = layer->l_pause.bottom = -1; + return; + } + + /* Unpause. So refresh the regions in the displays! */ + if (layer->l_pause.top == -1 && layer->l_pause.bottom == -1) + return; + + if (layer->l_layfn == &WinLf) /* Currently, this will always be the case! */ + win = layer->l_data; + else + win = NULL; + + for (cv = layer->l_cvlist; cv; cv = cv->c_lnext) { + struct viewport *vp; + + if (!cv->c_slorient) + continue; /* Wasn't split, so already updated. */ + display = cv->c_display; + for (vp = cv->c_vplist; vp; vp = vp->v_next) { + for (line = layer->l_pause.top; line <= layer->l_pause.bottom; line++) { + int xs, xe; + if (line + vp->v_yoff >= vp->v_ys && line + vp->v_yoff <= vp->v_ye && + ((xs = layer->l_pause.left[line]) >= 0) && + ((xe = layer->l_pause.right[line]) >= 0)) { + xs += vp->v_xoff; + xe += vp->v_xoff; + + if (xs < vp->v_xs) xs = vp->v_xs; + if (xe > vp->v_xe) xe = vp->v_xe; + +#if defined(DW_CHARS) && defined(UTF8) + if (layer->l_encoding == UTF8 && xe < vp->v_xe && win) { + struct mline *ml = win->w_mlines + line; + if (dw_left(ml, xe, UTF8)) + xe++; + } +#endif + + if (xs <= xe) + RefreshLine(line + vp->v_yoff, xs, xe, 0); + } + } + } + + if (cv == D_forecv) { + int cx = layer->l_x + cv->c_xoff; + int cy = layer->l_y + cv->c_yoff; + + if (cx < cv->c_xs) cx = cv->c_xs; + if (cy < cv->c_ys) cy = cv->c_ys; + if (cx > cv->c_xe) cx = cv->c_xe; + if (cy > cv->c_ye) cy = cv->c_ye; + + GotoPos(cx, cy); + } + } + + for (line = layer->l_pause.top; line <= layer->l_pause.bottom; line++) + layer->l_pause.left[line] = layer->l_pause.right[line] = -1; +} + +void LayPauseUpdateRegion(struct layer *layer, int xs, int xe, int ys, int ye) +{ + if (!layer->l_pause.d) + return; + if (ys < 0) + ys = 0; + if (ye >= layer->l_height) + ye = layer->l_height - 1; + if (xe >= layer->l_width) + xe = layer->l_width - 1; + + if (layer->l_pause.top == -1 || layer->l_pause.top > ys) + layer->l_pause.top = ys; + if (layer->l_pause.bottom < ye) { + layer->l_pause.bottom = ye; + + if (layer->l_pause.lines <= ye) { + int o = layer->l_pause.lines; + layer->l_pause.lines = ye + 32; + layer->l_pause.left = realloc(layer->l_pause.left, sizeof(int) * layer->l_pause.lines); + layer->l_pause.right = realloc(layer->l_pause.right, sizeof(int) * layer->l_pause.lines); + while (o < layer->l_pause.lines) { + layer->l_pause.left[o] = layer->l_pause.right[o] = -1; + o++; + } + } + } + while (ys <= ye) { + if (layer->l_pause.left[ys] == -1 || layer->l_pause.left[ys] > xs) + layer->l_pause.left[ys] = xs; + if (layer->l_pause.right[ys] < xe) + layer->l_pause.right[ys] = xe; + ys++; + } +} + +void LayerCleanupMemory(struct layer *layer) +{ + if (layer->l_pause.left) + free(layer->l_pause.left); + if (layer->l_pause.right) + free(layer->l_pause.right); +} |