diff options
Diffstat (limited to 'canvas.c')
| -rw-r--r-- | canvas.c | 918 |
1 files changed, 918 insertions, 0 deletions
diff --git a/canvas.c b/canvas.c new file mode 100644 index 0000000..919e94d --- /dev/null +++ b/canvas.c @@ -0,0 +1,918 @@ +/* Copyright (c) 2008, 2009 + * 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 + * https://www.gnu.org/licenses/, or contact Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA + * + **************************************************************** + */ + +#include "config.h" +#include "screen.h" +#include "extern.h" +#include "canvas.h" +#include "list_generic.h" + +extern struct display *display; +extern struct win *fore, *windows; +extern struct layer *flayer; +extern int captionalways; +extern struct LayFuncs BlankLf; +extern int focusminwidth, focusminheight; + +static void +CanvasInitBlank(cv) +struct canvas *cv; +{ + cv->c_blank.l_cvlist = cv; + cv->c_blank.l_width = cv->c_xe - cv->c_xs + 1; + cv->c_blank.l_height = cv->c_ye - cv->c_ys + 1; + cv->c_blank.l_x = cv->c_blank.l_y = 0; + cv->c_blank.l_layfn = &BlankLf; + cv->c_blank.l_data = 0; + cv->c_blank.l_next = 0; + cv->c_blank.l_bottom = &cv->c_blank; + cv->c_blank.l_blocking = 0; + cv->c_layer = &cv->c_blank; +} + +static void +FreePerp(pcv) +struct canvas *pcv; +{ + struct canvas *cv; + + if (!pcv->c_slperp) + return; + cv = pcv->c_slperp; + cv->c_slprev = pcv->c_slprev; + if (cv->c_slprev) + cv->c_slprev->c_slnext = cv; + cv->c_slback = pcv->c_slback; + if (cv->c_slback && cv->c_slback->c_slperp == pcv) + cv->c_slback->c_slperp = cv; + cv->c_slorient = pcv->c_slorient; + cv->c_slweight = pcv->c_slweight; + while (cv->c_slnext) + { + cv = cv->c_slnext; + cv->c_slorient = pcv->c_slorient; + cv->c_slback = pcv->c_slback; + cv->c_slweight = pcv->c_slweight; + } + cv->c_slnext = pcv->c_slnext; + if (cv->c_slnext) + cv->c_slnext->c_slprev = cv; + LayerCleanupMemory(&pcv->c_blank); + free(pcv); +} + +void +FreeCanvas(cv) +struct canvas *cv; +{ + struct viewport *vp, *nvp; + struct canvas **cvp; + struct win *p; + + if (cv->c_slprev) + cv->c_slprev->c_slnext = cv->c_slnext; + if (cv->c_slnext) + cv->c_slnext->c_slprev = cv->c_slprev; + if (cv->c_slback && cv->c_slback->c_slperp == cv) + cv->c_slback->c_slperp = cv->c_slnext ? cv->c_slnext : cv->c_slprev; + if (cv->c_slperp) + { + while (cv->c_slperp) + FreeCanvas(cv->c_slperp); + LayerCleanupMemory(&cv->c_blank); + free(cv); + return; + } + + if (display) + { + if (D_forecv == cv) + D_forecv = 0; + /* remove from canvas chain as SetCanvasWindow might call + * some layer function */ + for (cvp = &D_cvlist; *cvp ; cvp = &(*cvp)->c_next) + if (*cvp == cv) + { + *cvp = cv->c_next; + break; + } + } + p = cv->c_layer ? Layer2Window(cv->c_layer) : 0; + SetCanvasWindow(cv, 0); + if (p) + WindowChanged(p, 'u'); + if (flayer == cv->c_layer) + flayer = 0; + for (vp = cv->c_vplist; vp; vp = nvp) + { + vp->v_canvas = 0; + nvp = vp->v_next; + vp->v_next = 0; + free(vp); + } + evdeq(&cv->c_captev); + LayerCleanupMemory(&cv->c_blank); + free(cv); +} + +int +CountCanvas(cv) +struct canvas *cv; +{ + int num = 0; + for (; cv; cv = cv->c_slnext) + { + if (cv->c_slperp) + { + struct canvas *cvp; + int nump = 1, n; + for (cvp = cv->c_slperp; cvp; cvp = cvp->c_slnext) + if (cvp->c_slperp) + { + n = CountCanvas(cvp->c_slperp); + if (n > nump) + nump = n; + } + num += nump; + } + else + num++; + } + return num; +} + +int +CountCanvasPerp(cv) +struct canvas *cv; +{ + struct canvas *cvp; + int num = 1, n; + for (cvp = cv->c_slperp; cvp; cvp = cvp->c_slnext) + if (cvp->c_slperp) + { + n = CountCanvas(cvp->c_slperp); + if (n > num) + num = n; + } + return num; +} + +struct canvas * +FindCanvas(x, y) +int x, y; +{ + struct canvas *cv, *mcv = 0; + int m, mm = 0; + + for (cv = D_cvlist; cv; cv = cv->c_next) + { + /* ye + 1 because of caption line */ + if (x >= cv->c_xs && x <= cv->c_xe && y >= cv->c_ys && y <= cv->c_ye + 1) + return cv; + if (cv == D_forecv) + continue; + m = 0; + if (x >= D_forecv->c_xs && x <= D_forecv->c_xe) + { + if (x < cv->c_xs || x > cv->c_xe) + continue; + if (y < D_forecv->c_ys && y < cv->c_ys) + continue; + if (y > D_forecv->c_ye + 1 && y > cv->c_ye + 1) + continue; + if (y < cv->c_ys) + m = cv->c_ys - y; + if (y > cv->c_ye + 1) + m = y - (cv->c_ye + 1); + } + if (y >= D_forecv->c_ys && y <= D_forecv->c_ye + 1) + { + if (y < cv->c_ys || y > cv->c_ye + 1) + continue; + if (x < D_forecv->c_xs && x < cv->c_xs) + continue; + if (x > D_forecv->c_xe && x > cv->c_xe) + continue; + if (x < cv->c_xs) + m = cv->c_xs - x; + if (x > cv->c_xe) + m = x - cv->c_xe; + } + if (m && (!mm || m < mm)) + { + mcv = cv; + mm = m; + } + } + return mcv ? mcv : D_forecv; +} + +void +SetCanvasWindow(cv, wi) +struct canvas *cv; +struct win *wi; +{ + struct win *p = 0, **pp; + struct layer *l; + struct canvas *cvp, **cvpp; + + l = cv->c_layer; + display = cv->c_display; + + if (l) + { + /* remove old layer */ + for (cvpp = &l->l_cvlist; (cvp = *cvpp); cvpp = &cvp->c_lnext) + if (cvp == cv) + break; + ASSERT(cvp); + *cvpp = cvp->c_lnext; + + p = Layer2Window(l); + l = cv->c_layer; + cv->c_layer = 0; + + if (p && cv == D_forecv) + { +#ifdef MULTIUSER + ReleaseAutoWritelock(display, p); +#endif + if (p->w_silence) + { + SetTimeout(&p->w_silenceev, p->w_silencewait * 1000); + evenq(&p->w_silenceev); + } + D_other = fore; + D_fore = 0; + } + if (l->l_cvlist == 0 && (p == 0 || l != p->w_savelayer)) + KillLayerChain(l); + } + + /* find right layer to display on canvas */ + if (wi && wi->w_type != W_TYPE_GROUP) + { + l = &wi->w_layer; + if (wi->w_savelayer && (wi->w_blocked || wi->w_savelayer->l_cvlist == 0)) + l = wi->w_savelayer; + } + else + { + l = &cv->c_blank; + if (wi) + l->l_data = (char *)wi; + else + l->l_data = 0; + } + + /* add our canvas to the layer's canvaslist */ + ASSERT(l->l_cvlist != cv); + cv->c_lnext = l->l_cvlist; + l->l_cvlist = cv; + cv->c_layer = l; + cv->c_xoff = cv->c_xs; + cv->c_yoff = cv->c_ys; + RethinkViewportOffsets(cv); + + if (flayer == 0) + flayer = l; + + if (wi && wi->w_type == W_TYPE_GROUP) + { + /* auto-start windowlist on groups */ + struct display *d = display; + struct layer *oldflayer = flayer; + flayer = l; + display_windows(0, 0, wi); + flayer = oldflayer; + display = d; + } + + if (wi && D_other == wi) + D_other = wi->w_next; /* Might be 0, but that's OK. */ + if (cv == D_forecv) + { + D_fore = wi; + fore = D_fore; /* XXX ? */ + if (wi) + { +#ifdef MULTIUSER + ObtainAutoWritelock(display, wi); +#endif + /* + * Place the window at the head of the most-recently-used list + */ + if (windows != wi) + { + for (pp = &windows; (p = *pp); pp = &p->w_next) + if (p == wi) + break; + ASSERT(p); + *pp = p->w_next; + p->w_next = windows; + windows = p; + WListLinkChanged(); + } + } + } +} + +static void +cv_winid_fn(ev, data) +struct event *ev; +char *data; +{ + int ox, oy; + struct canvas *cv = (struct canvas *)data; + + display = cv->c_display; + if (D_status == STATUS_ON_WIN) + { + SetTimeout(ev, 1); + evenq(ev); + return; + } + ox = D_x; + oy = D_y; + if (cv->c_ye + 1 < D_height) + RefreshLine(cv->c_ye + 1, 0, D_width - 1, 0); + if (ox != -1 && oy != -1) + GotoPos(ox, oy); +} + +int +MakeDefaultCanvas() +{ + struct canvas *cv; + + ASSERT(display); + if ((cv = (struct canvas *)calloc(1, sizeof *cv)) == 0) + return -1; + cv->c_xs = 0; + cv->c_xe = D_width - 1; + cv->c_ys = (D_has_hstatus == HSTATUS_FIRSTLINE); + cv->c_ye = D_height - 1 - (D_has_hstatus == HSTATUS_LASTLINE) - captionalways; + debug2("MakeDefaultCanvas 0,0 %d,%d\n", cv->c_xe, cv->c_ye); + cv->c_xoff = 0; + cv->c_yoff = 0; + cv->c_next = 0; + cv->c_display = display; + cv->c_vplist = 0; + cv->c_slnext = 0; + cv->c_slprev = 0; + cv->c_slperp = 0; + cv->c_slweight = 1; + cv->c_slback = &D_canvas; + D_canvas.c_slperp = cv; + D_canvas.c_xs = cv->c_xs; + D_canvas.c_xe = cv->c_xe; + D_canvas.c_ys = cv->c_ys; + D_canvas.c_ye = cv->c_ye; + cv->c_slorient = SLICE_UNKN; + cv->c_captev.type = EV_TIMEOUT; + cv->c_captev.data = (char *)cv; + cv->c_captev.handler = cv_winid_fn; + + CanvasInitBlank(cv); + cv->c_lnext = 0; + + D_cvlist = cv; + RethinkDisplayViewports(); + D_forecv = cv; /* default input focus */ + return 0; +} + +static struct canvas ** +CreateCanvasChainRec(cv, cvp) +struct canvas *cv; +struct canvas **cvp; +{ + for (; cv; cv = cv->c_slnext) + { + if (cv->c_slperp) + cvp = CreateCanvasChainRec(cv->c_slperp, cvp); + else + { + *cvp = cv; + cvp = &cv->c_next; + } + } + return cvp; +} + +void +RecreateCanvasChain() +{ + struct canvas **cvp; + cvp = CreateCanvasChainRec(D_canvas.c_slperp, &D_cvlist); + *cvp = 0; +} + +void +EqualizeCanvas(cv, gflag) +struct canvas *cv; +int gflag; +{ + struct canvas *cv2; + for (; cv; cv = cv->c_slnext) + { + if (cv->c_slperp && gflag) + { + cv->c_slweight = CountCanvasPerp(cv); + for (cv2 = cv->c_slperp; cv2; cv2 = cv2->c_slnext) + if (cv2->c_slperp) + EqualizeCanvas(cv2->c_slperp, gflag); + } + else + cv->c_slweight = 1; + } +} + +void +ResizeCanvas(cv) +struct canvas *cv; +{ + struct canvas *cv2, *cvn, *fcv; + int nh, i, maxi, hh, m, w, wsum; + int need, got; + int xs, ys, xe, ye; + int focusmin = 0; + + xs = cv->c_xs; + ys = cv->c_ys; + xe = cv->c_xe; + ye = cv->c_ye; + cv = cv->c_slperp; + debug2("ResizeCanvas: %d,%d", xs, ys); + debug2(" %d,%d\n", xe, ye); + if (cv == 0) + return; + if (cv->c_slorient == SLICE_UNKN) + { + ASSERT(!cv->c_slnext && !cv->c_slperp); + cv->c_xs = xs; + cv->c_xe = xe; + cv->c_ys = ys; + cv->c_ye = ye; + cv->c_xoff = cv->c_xs; + cv->c_yoff = cv->c_ys; + cv->c_blank.l_width = cv->c_xe - cv->c_xs + 1; + cv->c_blank.l_height = cv->c_ye - cv->c_ys + 1; + return; + } + + fcv = 0; + if (focusminwidth || focusminheight) + { + debug("searching for focus canvas\n"); + cv2 = D_forecv; + while (cv2->c_slback) + { + if (cv2->c_slback == cv->c_slback) + { + fcv = cv2; + focusmin = cv->c_slorient == SLICE_VERT ? focusminheight : focusminwidth; + if (focusmin > 0) + focusmin--; + else if (focusmin < 0) + focusmin = cv->c_slorient == SLICE_VERT ? ye - ys + 2 : xe - xs + 2; + debug1("found, focusmin=%d\n", focusmin); + } + cv2 = cv2->c_slback; + } + } + if (focusmin) + { + m = CountCanvas(cv) * 2; + nh = cv->c_slorient == SLICE_VERT ? ye - ys + 2 : xe - xs + 2; + nh -= m; + if (nh < 0) + nh = 0; + if (focusmin > nh) + focusmin = nh; + debug1("corrected to %d\n", focusmin); + } + + /* pass 1: calculate weight sum */ + for (cv2 = cv, wsum = 0; cv2; cv2 = cv2->c_slnext) + { + debug1(" weight %d\n", cv2->c_slweight); + wsum += cv2->c_slweight; + } + debug1("wsum = %d\n", wsum); + if (wsum == 0) + wsum = 1; + w = wsum; + + /* pass 2: calculate need/excess space */ + nh = cv->c_slorient == SLICE_VERT ? ye - ys + 2 : xe - xs + 2; + for (cv2 = cv, need = got = 0; cv2; cv2 = cv2->c_slnext) + { + m = cv2->c_slperp ? CountCanvasPerp(cv2) * 2 - 1 : 1; + if (cv2 == fcv) + m += focusmin; + hh = cv2->c_slweight ? nh * cv2->c_slweight / w : 0; + w -= cv2->c_slweight; + nh -= hh; + debug2(" should %d min %d\n", hh, m); + if (hh <= m + 1) + need += m + 1 - hh; + else + got += hh - m - 1; + } + debug2("need: %d, got %d\n", need, got); + if (need > got) + need = got; + + /* pass 3: distribute space */ + nh = cv->c_slorient == SLICE_VERT ? ye - ys + 2 : xe - xs + 2; + i = cv->c_slorient == SLICE_VERT ? ys : xs; + maxi = cv->c_slorient == SLICE_VERT ? ye : xe; + w = wsum; + for (; cv; cv = cvn) + { + cvn = cv->c_slnext; + if (i > maxi) + { + if (cv->c_slprev && !cv->c_slback->c_slback && !cv->c_slprev->c_slperp && !cv->c_slprev->c_slprev) + { + cv->c_slprev->c_slorient = SLICE_UNKN; + if (!captionalways) + { + cv->c_slback->c_ye++; + cv->c_slprev->c_ye++; + } + } + SetCanvasWindow(cv, 0); + FreeCanvas(cv); + continue; + } + m = cv->c_slperp ? CountCanvasPerp(cv) * 2 - 1 : 1; + if (cv == fcv) + m += focusmin; + hh = cv->c_slweight ? nh * cv->c_slweight / w : 0; + w -= cv->c_slweight; + nh -= hh; + debug2(" should %d min %d\n", hh, m); + if (hh <= m + 1) + { + hh = m + 1; + debug1(" -> %d\n", hh); + } + else + { + int hx = 1; //FIXME Division by zero (got) is posible. "hx = 1" is random number here!!! + if (got != 0) + hx = need * (hh - m - 1) / got; + else + debug(" got = 0\n"); + + debug3(" -> %d - %d = %d\n", hh, hx, hh - hx); + got -= (hh - m - 1); + hh -= hx; + need -= hx; + debug2(" now need=%d got=%d\n", need, got); + } + ASSERT(hh >= m + 1); + /* hh is window size plus pation line */ + if (i + hh > maxi + 2) + { + hh = maxi + 2 - i; + debug1(" not enough space, reducing to %d\n", hh); + } + if (i + hh == maxi + 1) + { + hh++; + debug(" incrementing as no other canvas will fit\n"); + } + if (cv->c_slorient == SLICE_VERT) + { + cv->c_xs = xs; + cv->c_xe = xe; + cv->c_ys = i; + cv->c_ye = i + hh - 2; + cv->c_xoff = xs; + cv->c_yoff = i; + } + else + { + cv->c_xs = i; + cv->c_xe = i + hh - 2; + cv->c_ys = ys; + cv->c_ye = ye; + cv->c_xoff = i; + cv->c_yoff = ys; + } + cv->c_xoff = cv->c_xs; + cv->c_yoff = cv->c_ys; + cv->c_blank.l_width = cv->c_xe - cv->c_xs + 1; + cv->c_blank.l_height = cv->c_ye - cv->c_ys + 1; + if (cv->c_slperp) + { + ResizeCanvas(cv); + if (!cv->c_slperp->c_slnext) + { + debug("deleting perp node\n"); + FreePerp(cv->c_slperp); + FreePerp(cv); + } + } + i += hh; + } +} + +static struct canvas * +AddPerp(cv) +struct canvas *cv; +{ + struct canvas *pcv; + debug("Creating new perp node\n"); + + if ((pcv = (struct canvas *)calloc(1, sizeof *cv)) == 0) + return 0; + pcv->c_next = 0; + pcv->c_display = cv->c_display; + pcv->c_slnext = cv->c_slnext; + pcv->c_slprev = cv->c_slprev; + pcv->c_slperp = cv; + pcv->c_slback = cv->c_slback; + if (cv->c_slback && cv->c_slback->c_slperp == cv) + cv->c_slback->c_slperp = pcv; + pcv->c_slorient = cv->c_slorient; + pcv->c_xoff = 0; + pcv->c_yoff = 0; + pcv->c_xs = cv->c_xs; + pcv->c_xe = cv->c_xe; + pcv->c_ys = cv->c_ys; + pcv->c_ye = cv->c_ye; + if (pcv->c_slnext) + pcv->c_slnext->c_slprev = pcv; + if (pcv->c_slprev) + pcv->c_slprev->c_slnext = pcv; + pcv->c_slweight = cv->c_slweight; + CanvasInitBlank(pcv); + cv->c_slweight = 1; + cv->c_slnext = 0; + cv->c_slprev = 0; + cv->c_slperp = 0; + cv->c_slback = pcv; + cv->c_slorient = SLICE_UNKN; + return pcv; +} + +int +AddCanvas(orient) +int orient; +{ + struct canvas *cv; + int xs, xe, ys, ye; + int h, num; + + cv = D_forecv; + debug2("AddCanvas orient %d, forecv is %d\n", orient, cv->c_slorient); + + if (cv->c_slorient != SLICE_UNKN && cv->c_slorient != orient) + if (!AddPerp(cv)) + return -1; + + cv = D_forecv; + xs = cv->c_slback->c_xs; + xe = cv->c_slback->c_xe; + ys = cv->c_slback->c_ys; + ye = cv->c_slback->c_ye; + if (!captionalways && cv == D_canvas.c_slperp && !cv->c_slnext) + ye--; /* need space for caption */ + debug2("Adding Canvas to slice %d,%d ", xs, ys); + debug2("%d,%d\n", xe, ye); + + num = CountCanvas(cv->c_slback->c_slperp) + 1; + debug1("Num = %d\n", num); + if (orient == SLICE_VERT) + h = ye - ys + 1; + else + h = xe - xs + 1; + + h -= 2 * num - 1; + if (h < 0) + return -1; /* can't fit in */ + + if ((cv = (struct canvas *)calloc(1, sizeof *cv)) == 0) + return -1; + + D_forecv->c_slback->c_ye = ye; /* in case we modified it above */ + D_forecv->c_slorient = orient; /* in case it was UNKN */ + cv->c_slnext = D_forecv->c_slnext; + cv->c_slprev = D_forecv; + D_forecv->c_slnext = cv; + if (cv->c_slnext) + cv->c_slnext->c_slprev = cv; + cv->c_slorient = orient; + cv->c_slback = D_forecv->c_slback; + + cv->c_xs = xs; + cv->c_xe = xe; + cv->c_ys = ys; + cv->c_ye = ye; + cv->c_xoff = 0; + cv->c_yoff = 0; + cv->c_display = display; + cv->c_vplist = 0; + cv->c_captev.type = EV_TIMEOUT; + cv->c_captev.data = (char *)cv; + cv->c_captev.handler = cv_winid_fn; + + CanvasInitBlank(cv); + cv->c_lnext = 0; + + cv->c_next = 0; + + cv = cv->c_slback; + EqualizeCanvas(cv->c_slperp, 0); + ResizeCanvas(cv); + RecreateCanvasChain(); + RethinkDisplayViewports(); + ResizeLayersToCanvases(); + return 0; +} + +void +RemCanvas() +{ + int ye; + struct canvas *cv; + + debug("RemCanvas\n"); + cv = D_forecv; + ye = cv->c_slback->c_ye; + if (cv->c_slorient == SLICE_UNKN) + return; + while (cv->c_slprev) + cv = cv->c_slprev; + if (!cv->c_slnext) + return; + if (!cv->c_slnext->c_slnext && cv->c_slback->c_slback) + { + /* two canvases in slice, kill perp node */ + cv = D_forecv; + debug("deleting perp node\n"); + FreePerp(cv->c_slprev ? cv->c_slprev : cv->c_slnext); + FreePerp(cv->c_slback); + } + /* free canvas */ + cv = D_forecv; + D_forecv = cv->c_slprev; + if (!D_forecv) + D_forecv = cv->c_slnext; + FreeCanvas(cv); + + cv = D_forecv; + while (D_forecv->c_slperp) + D_forecv = D_forecv->c_slperp; + + /* if only one canvas left, set orient back to unknown */ + if (!cv->c_slnext && !cv->c_slprev && !cv->c_slback->c_slback && !cv->c_slperp) + { + cv->c_slorient = SLICE_UNKN; + if (!captionalways) + cv->c_slback->c_ye = ++ye; /* caption line no longer needed */ + } + cv = cv->c_slback; + EqualizeCanvas(cv->c_slperp, 0); + ResizeCanvas(cv); + + D_fore = Layer2Window(D_forecv->c_layer); + flayer = D_forecv->c_layer; + + RecreateCanvasChain(); + RethinkDisplayViewports(); + ResizeLayersToCanvases(); +} + +void +OneCanvas() +{ + struct canvas *cv = D_forecv, *ocv = 0; + + if (cv->c_slprev) + { + ocv = cv->c_slprev; + cv->c_slprev->c_slnext = cv->c_slnext; + } + if (cv->c_slnext) + { + ocv = cv->c_slnext; + cv->c_slnext->c_slprev = cv->c_slprev; + } + if (!ocv) + return; + if (cv->c_slback && cv->c_slback->c_slperp == cv) + cv->c_slback->c_slperp = ocv; + cv->c_slorient = SLICE_UNKN; + while (D_canvas.c_slperp) + FreeCanvas(D_canvas.c_slperp); + cv = D_forecv; + D_canvas.c_slperp = cv; + cv->c_slback = &D_canvas; + cv->c_slnext = 0; + cv->c_slprev = 0; + ASSERT(!cv->c_slperp); + if (!captionalways) + D_canvas.c_ye++; /* caption line no longer needed */ + ResizeCanvas(&D_canvas); + RecreateCanvasChain(); + RethinkDisplayViewports(); + ResizeLayersToCanvases(); +} + +void +DupLayoutCv(cvf, cvt, save) +struct canvas *cvf, *cvt; +int save; +{ + while(cvf) + { + cvt->c_slorient = cvf->c_slorient; + cvt->c_slweight = cvf->c_slweight; + if (cvf == D_forecv) + D_forecv = cvt; + if (!save) + { + cvt->c_display = display; + if (!cvf->c_slperp) + { + cvt->c_captev.type = EV_TIMEOUT; + cvt->c_captev.data = (char *)cvt; + cvt->c_captev.handler = cv_winid_fn; + cvt->c_blank.l_cvlist = 0; + cvt->c_blank.l_layfn = &BlankLf; + cvt->c_blank.l_bottom = &cvt->c_blank; + } + cvt->c_layer = cvf->c_layer; + } + else + { + struct win *p = cvf->c_layer ? Layer2Window(cvf->c_layer) : 0; + cvt->c_layer = p ? &p->w_layer : 0; + } + if (cvf->c_slperp) + { + cvt->c_slperp = (struct canvas *)calloc(1, sizeof(struct canvas)); + cvt->c_slperp->c_slback = cvt; + CanvasInitBlank(cvt->c_slperp); + DupLayoutCv(cvf->c_slperp, cvt->c_slperp, save); + } + if (cvf->c_slnext) + { + cvt->c_slnext = (struct canvas *)calloc(1, sizeof(struct canvas)); + cvt->c_slnext->c_slprev = cvt; + cvt->c_slnext->c_slback = cvt->c_slback; + CanvasInitBlank(cvt->c_slnext); + } + cvf = cvf->c_slnext; + cvt = cvt->c_slnext; + } +} + +void +PutWindowCv(cv) +struct canvas *cv; +{ + struct win *p; + for (; cv; cv = cv->c_slnext) + { + if (cv->c_slperp) + { + PutWindowCv(cv->c_slperp); + continue; + } + p = cv->c_layer ? (struct win *)cv->c_layer->l_data : 0; + cv->c_layer = 0; + SetCanvasWindow(cv, p); + } +} + |