From 98a18b797c63ea9baab31768ed720ad32c0004e8 Mon Sep 17 00:00:00 2001 From: Guillaume Cottenceau Date: Mon, 14 May 2001 21:47:42 +0000 Subject: i can compile slang and newt with dietlibc now --- mdk-stage1/newt/form.c | 712 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 712 insertions(+) create mode 100644 mdk-stage1/newt/form.c (limited to 'mdk-stage1/newt/form.c') diff --git a/mdk-stage1/newt/form.c b/mdk-stage1/newt/form.c new file mode 100644 index 000000000..4ad465e38 --- /dev/null +++ b/mdk-stage1/newt/form.c @@ -0,0 +1,712 @@ +#include +#include +#include +#include +#include +#include + +#include "newt.h" +#include "newt_pr.h" + + +/**************************************************************************** + These forms handle vertical scrolling of components with a height of 1 + + Horizontal scrolling won't work, and scrolling large widgets will fail + miserably. It shouldn't be too hard to fix either of those if anyone + cares to. I only use scrolling for listboxes and text boxes though so + I didn't bother. +*****************************************************************************/ + +struct element { + int top, left; /* Actual, not virtual. These are translated */ + newtComponent co; /* into actual through vertOffset */ +}; + +struct fdInfo { + int fd; + int flags; +}; + +struct form { + int numCompsAlloced; + struct element * elements; + int numComps; + int currComp; + int fixedHeight; + int flags; + int vertOffset; + newtComponent vertBar, exitComp; + const char * help; + int numRows; + int * hotKeys; + int numHotKeys; + int background; + int beenSet; + int numFds; + struct fdInfo * fds; + int maxFd; + int timer; /* in milliseconds */ + struct timeval lastTimeout; + void * helpTag; + newtCallback helpCb; +}; + +static void gotoComponent(struct form * form, int newComp); +static struct eventResult formEvent(newtComponent co, struct event ev); +static struct eventResult sendEvent(newtComponent comp, struct event ev); +static void formPlace(newtComponent co, int left, int top); + +/* Global, ick */ +static newtCallback helpCallback; + +/* this isn't static as grid.c tests against it to find forms */ +struct componentOps formOps = { + newtDrawForm, + formEvent, + newtFormDestroy, + formPlace, + newtDefaultMappedHandler, +} ; + +static inline int componentFits(newtComponent co, int compNum) { + struct form * form = co->data; + struct element * el = form->elements + compNum; + + if ((co->top + form->vertOffset) > el->top) return 0; + if ((co->top + form->vertOffset + co->height) < + (el->top + el->co->height)) return 0; + + return 1; +} + +newtComponent newtForm(newtComponent vertBar, void * help, int flags) { + newtComponent co; + struct form * form; + + co = malloc(sizeof(*co)); + form = malloc(sizeof(*form)); + co->data = form; + co->width = 0; + co->height = 0; + co->top = -1; + co->left = -1; + co->isMapped = 0; + + co->takesFocus = 0; /* we may have 0 components */ + co->ops = &formOps; + + form->help = help; + form->flags = flags; + form->numCompsAlloced = 5; + form->numComps = 0; + form->currComp = -1; + form->vertOffset = 0; + form->fixedHeight = 0; + form->numRows = 0; + form->numFds = 0; + form->maxFd = 0; + form->fds = NULL; + form->beenSet = 0; + form->elements = malloc(sizeof(*(form->elements)) * form->numCompsAlloced); + + form->background = COLORSET_WINDOW; + form->hotKeys = malloc(sizeof(int)); + form->numHotKeys = 0; + form->timer = 0; + form->lastTimeout.tv_sec = form->lastTimeout.tv_usec = 0; + if (!(form->flags & NEWT_FLAG_NOF12)) { + newtFormAddHotKey(co, NEWT_KEY_F12); + } + + if (vertBar) + form->vertBar = vertBar; + else + form->vertBar = NULL; + + form->helpTag = help; + form->helpCb = helpCallback; + + return co; +} + +newtComponent newtFormGetCurrent(newtComponent co) { + struct form * form = co->data; + + return form->elements[form->currComp].co; +} + +void newtFormSetCurrent(newtComponent co, newtComponent subco) { + struct form * form = co->data; + int i, new; + + for (i = 0; i < form->numComps; i++) { + if (form->elements[i].co == subco) break; + } + + if (form->elements[i].co != subco) return; + new = i; + + if (co->isMapped && !componentFits(co, new)) { + gotoComponent(form, -1); + form->vertOffset = form->elements[new].top - co->top - 1; + if (form->vertOffset > (form->numRows - co->height)) + form->vertOffset = form->numRows - co->height; + } + + gotoComponent(form, new); +} + +void newtFormSetTimer(newtComponent co, int millisecs) { + struct form * form = co->data; + + form->timer = millisecs; + form->lastTimeout.tv_usec = 0; + form->lastTimeout.tv_sec = 0; +} + +void newtFormSetHeight(newtComponent co, int height) { + struct form * form = co->data; + + form->fixedHeight = 1; + co->height = height; +} + +void newtFormSetWidth(newtComponent co, int width) { + co->width = width; +} + +void newtFormAddComponent(newtComponent co, newtComponent newco) { + struct form * form = co->data; + + co->takesFocus = 1; + + if (form->numCompsAlloced == form->numComps) { + form->numCompsAlloced += 5; + form->elements = realloc(form->elements, + sizeof(*(form->elements)) * form->numCompsAlloced); + } + + /* we grab real values for these a bit later */ + form->elements[form->numComps].left = -2; + form->elements[form->numComps].top = -2; + form->elements[form->numComps].co = newco; + + if (newco->takesFocus && form->currComp == -1) + form->currComp = form->numComps; + + form->numComps++; +} + +void newtFormAddComponents(newtComponent co, ...) { + va_list ap; + newtComponent subco; + + va_start(ap, co); + + while ((subco = va_arg(ap, newtComponent))) + newtFormAddComponent(co, subco); + + va_end(ap); +} + +static void formPlace(newtComponent co, int left, int top) { + struct form * form = co->data; + int vertDelta, horizDelta; + struct element * el; + int i; + + newtFormSetSize(co); + + vertDelta = top - co->top; + horizDelta = left - co->left; + co->top = top; + co->left = left; + + for (i = 0, el = form->elements; i < form->numComps; i++, el++) { + el->co->top += vertDelta; + el->top += vertDelta; + el->co->left += horizDelta; + el->left += horizDelta; + } +} + +void newtDrawForm(newtComponent co) { + struct form * form = co->data; + struct element * el; + int i; + + newtFormSetSize(co); + + SLsmg_set_color(form->background); + newtClearBox(co->left, co->top, co->width, co->height); + for (i = 0, el = form->elements; i < form->numComps; i++, el++) { + /* the scrollbar *always* fits somewhere */ + if (el->co == form->vertBar) { + el->co->ops->mapped(el->co, 1); + el->co->ops->draw(el->co); + } else { + /* only draw it if it'll fit on the screen vertically */ + if (componentFits(co, i)) { + el->co->top = el->top - form->vertOffset; + el->co->ops->mapped(el->co, 1); + el->co->ops->draw(el->co); + } else { + el->co->ops->mapped(el->co, 0); + } + } + } + + if (form->vertBar) + newtScrollbarSet(form->vertBar, form->vertOffset, + form->numRows - co->height); +} + +static struct eventResult formEvent(newtComponent co, struct event ev) { + struct form * form = co->data; + newtComponent subco = form->elements[form->currComp].co; + int new, wrap = 0; + struct eventResult er; + int dir = 0, page = 0; + int i, num, found; + struct element * el; + + er.result = ER_IGNORED; + if (!form->numComps) return er; + + subco = form->elements[form->currComp].co; + + switch (ev.when) { + case EV_EARLY: + if (ev.event == EV_KEYPRESS) { + if (ev.u.key == NEWT_KEY_TAB) { + er.result = ER_SWALLOWED; + dir = 1; + wrap = 1; + } else if (ev.u.key == NEWT_KEY_UNTAB) { + er.result = ER_SWALLOWED; + dir = -1; + wrap = 1; + } + } + + if (form->numComps) { + i = form->currComp; + num = 0; + while (er.result == ER_IGNORED && num != form->numComps ) { + er = form->elements[i].co->ops->event(form->elements[i].co, ev); + + num++; + i++; + if (i == form->numComps) i = 0; + } + } + + break; + + case EV_NORMAL: + if (ev.event == EV_MOUSE) { + found = 0; + for (i = 0, el = form->elements; i < form->numComps; i++, el++) { + if ((el->co->top <= ev.u.mouse.y) && + (el->co->top + el->co->height > ev.u.mouse.y) && + (el->co->left <= ev.u.mouse.x) && + (el->co->left + el->co->width > ev.u.mouse.x)) { + found = 1; + if (el->co->takesFocus) { + gotoComponent(form, i); + subco = form->elements[form->currComp].co; + } + } + /* If we did not find a co to send this event to, we + should just swallow the event here. */ + } + if (!found) { + er.result = ER_SWALLOWED; + + return er; + } + } + er = subco->ops->event(subco, ev); + switch (er.result) { + case ER_NEXTCOMP: + er.result = ER_SWALLOWED; + dir = 1; + break; + + case ER_EXITFORM: + form->exitComp = subco; + break; + + default: + break; + } + break; + + case EV_LATE: + er = subco->ops->event(subco, ev); + + if (er.result == ER_IGNORED) { + switch (ev.u.key) { + case NEWT_KEY_UP: + case NEWT_KEY_LEFT: + case NEWT_KEY_BKSPC: + er.result = ER_SWALLOWED; + dir = -1; + break; + + case NEWT_KEY_DOWN: + case NEWT_KEY_RIGHT: + er.result = ER_SWALLOWED; + dir = 1; + break; + + case NEWT_KEY_PGUP: + er.result = ER_SWALLOWED; + dir = -1; + page = 1; + break; + + case NEWT_KEY_PGDN: + er.result = ER_SWALLOWED; + dir = 1; + page = 1; + break; + } + } + } + + if (dir) { + new = form->currComp; + + if (page) { + new += dir * co->height; + if (new < 0) + new = 0; + else if (new >= form->numComps) + new = (form->numComps - 1); + + while (!form->elements[new].co->takesFocus) + new = new - dir; + } else { + do { + new += dir; + + if (wrap) { + if (new < 0) + new = form->numComps - 1; + else if (new >= form->numComps) + new = 0; + } else if (new < 0 || new >= form->numComps) + return er; + } while (!form->elements[new].co->takesFocus); + } + + /* make sure this component is visible */ + if (!componentFits(co, new)) { + gotoComponent(form, -1); + + if (dir < 0) { + /* make the new component the first one */ + form->vertOffset = form->elements[new].top - co->top; + } else { + /* make the new component the last one */ + form->vertOffset = (form->elements[new].top + + form->elements[new].co->height) - + (co->top + co->height); + } + + if (form->vertOffset < 0) form->vertOffset = 0; + if (form->vertOffset > (form->numRows - co->height)) + form->vertOffset = form->numRows - co->height; + + newtDrawForm(co); + } + + gotoComponent(form, new); + er.result = ER_SWALLOWED; + } + + return er; +} + +/* this also destroys all of the components on the form */ +void newtFormDestroy(newtComponent co) { + newtComponent subco; + struct form * form = co->data; + int i; + + /* first, destroy all of the components */ + for (i = 0; i < form->numComps; i++) { + subco = form->elements[i].co; + if (subco->ops->destroy) { + subco->ops->destroy(subco); + } else { + if (subco->data) free(subco->data); + free(subco); + } + } + + if (form->hotKeys) free(form->hotKeys); + + free(form->elements); + free(form); + free(co); +} + +newtComponent newtRunForm(newtComponent co) { + struct newtExitStruct es; + + newtFormRun(co, &es); + if (es.reason == NEWT_EXIT_HOTKEY) { + if (es.u.key == NEWT_KEY_F12) { + es.reason = NEWT_EXIT_COMPONENT; + es.u.co = co; + } else { + return NULL; + } + } + + return es.u.co; +} + +void newtFormAddHotKey(newtComponent co, int key) { + struct form * form = co->data; + + form->numHotKeys++; + form->hotKeys = realloc(form->hotKeys, sizeof(int) * form->numHotKeys); + form->hotKeys[form->numHotKeys - 1] = key; +} + +void newtFormSetSize(newtComponent co) { + struct form * form = co->data; + int delta, i; + struct element * el; + + if (form->beenSet) return; + + form->beenSet = 1; + + if (!form->numComps) return; + + co->width = 0; + if (!form->fixedHeight) co->height = 0; + + co->top = form->elements[0].co->top; + co->left = form->elements[0].co->left; + for (i = 0, el = form->elements; i < form->numComps; i++, el++) { + if (el->co->ops == &formOps) + newtFormSetSize(el->co); + + el->left = el->co->left; + el->top = el->co->top; + + if (co->left > el->co->left) { + delta = co->left - el->co->left; + co->left -= delta; + co->width += delta; + } + + if (co->top > el->co->top) { + delta = co->top - el->co->top; + co->top -= delta; + if (!form->fixedHeight) + co->height += delta; + } + + if ((co->left + co->width) < (el->co->left + el->co->width)) + co->width = (el->co->left + el->co->width) - co->left; + + if (!form->fixedHeight) { + if ((co->top + co->height) < (el->co->top + el->co->height)) + co->height = (el->co->top + el->co->height) - co->top; + } + + if ((el->co->top + el->co->height - co->top) > form->numRows) { + form->numRows = el->co->top + el->co->height - co->top; + } + } +} + +void newtFormRun(newtComponent co, struct newtExitStruct * es) { + struct form * form = co->data; + struct event ev; + struct eventResult er; + int key, i, max; + int done = 0; + fd_set readSet, writeSet; + struct timeval nextTimeout, now, timeout; + + newtFormSetSize(co); + /* draw all of the components */ + newtDrawForm(co); + + if (form->currComp == -1) { + gotoComponent(form, 0); + } else + gotoComponent(form, form->currComp); + + while (!done) { + newtRefresh(); + + FD_ZERO(&readSet); + FD_ZERO(&writeSet); + FD_SET(0, &readSet); + max = form->maxFd; + + for (i = 0; i < form->numFds; i++) { + if (form->fds[i].flags & NEWT_FD_READ) + FD_SET(form->fds[i].fd, &readSet); + if (form->fds[i].flags & NEWT_FD_WRITE) + FD_SET(form->fds[i].fd, &writeSet); + } + + if (form->timer) { + /* Calculate when we next need to return with a timeout. Do + this inside the loop in case a callback resets the timer. */ + if (!form->lastTimeout.tv_sec && !form->lastTimeout.tv_usec) + gettimeofday(&form->lastTimeout, NULL); + + nextTimeout.tv_sec = form->lastTimeout.tv_sec + + (form->timer / 1000); + nextTimeout.tv_usec = form->lastTimeout.tv_usec + + (form->timer % 1000) * 1000; + + gettimeofday(&now, 0); + + if (now.tv_sec > nextTimeout.tv_sec) { + timeout.tv_sec = timeout.tv_usec = 0; + } else if (now.tv_sec == nextTimeout.tv_sec) { + timeout.tv_sec = 0; + if (now.tv_usec > nextTimeout.tv_usec) + timeout.tv_usec = 0; + else + timeout.tv_usec = nextTimeout.tv_usec - now.tv_usec; + } else if (now.tv_sec < nextTimeout.tv_sec) { + timeout.tv_sec = nextTimeout.tv_sec - now.tv_sec; + if (now.tv_usec > nextTimeout.tv_usec) + timeout.tv_sec--, + timeout.tv_usec = nextTimeout.tv_usec + 1000000 - + now.tv_usec; + else + timeout.tv_usec = nextTimeout.tv_usec - now.tv_usec; + } + } else { + timeout.tv_sec = timeout.tv_usec = 0; + } + + i = select(max + 1, &readSet, &writeSet, NULL, + form->timer ? &timeout : NULL); + if (i < 0) continue; /* ?? What should we do here? */ + + if (i == 0) { + done = 1; + es->reason = NEWT_EXIT_TIMER; + gettimeofday(&form->lastTimeout, NULL); + } else + { + if (FD_ISSET(0, &readSet)) { + + key = newtGetKey(); + + if (key == NEWT_KEY_RESIZE) { + /* newtResizeScreen(1); */ + continue; + } + + for (i = 0; i < form->numHotKeys; i++) { + if (form->hotKeys[i] == key) { + es->reason = NEWT_EXIT_HOTKEY; + es->u.key = key; + done = 1; + break; + } + } + + if (key == NEWT_KEY_F1 && form->helpTag && form->helpCb) + form->helpCb(co, form->helpTag); + + if (!done) { + ev.event = EV_KEYPRESS; + ev.u.key = key; + + er = sendEvent(co, ev); + + if (er.result == ER_EXITFORM) { + done = 1; + es->reason = NEWT_EXIT_COMPONENT; + es->u.co = form->exitComp; + } + } + } else { + es->reason = NEWT_EXIT_FDREADY; + done = 1; + } + } + } + newtRefresh(); +} + +static struct eventResult sendEvent(newtComponent co, struct event ev) { + struct eventResult er; + + ev.when = EV_EARLY; + er = co->ops->event(co, ev); + + if (er.result == ER_IGNORED) { + ev.when = EV_NORMAL; + er = co->ops->event(co, ev); + } + + if (er.result == ER_IGNORED) { + ev.when = EV_LATE; + er = co->ops->event(co, ev); + } + + return er; +} + +static void gotoComponent(struct form * form, int newComp) { + struct event ev; + + if (form->currComp != -1) { + ev.event = EV_UNFOCUS; + sendEvent(form->elements[form->currComp].co, ev); + } + + form->currComp = newComp; + + if (form->currComp != -1) { + ev.event = EV_FOCUS; + ev.when = EV_NORMAL; + sendEvent(form->elements[form->currComp].co, ev); + } +} + +void newtComponentAddCallback(newtComponent co, newtCallback f, void * data) { + co->callback = f; + co->callbackData = data; +} + +void newtComponentTakesFocus(newtComponent co, int val) { + co->takesFocus = val; +} + +void newtFormSetBackground(newtComponent co, int color) { + struct form * form = co->data; + + form->background = color; +} + +void newtFormWatchFd(newtComponent co, int fd, int fdFlags) { + struct form * form = co->data; + + form->fds = realloc(form->fds, (form->numFds + 1) * sizeof(*form->fds)); + form->fds[form->numFds].fd = fd; + form->fds[form->numFds++].flags = fdFlags; + if (form->maxFd < fd) form->maxFd = fd; +} + +void newtSetHelpCallback(newtCallback cb) { + helpCallback = cb; +} -- cgit v1.2.1