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author | Mystery Man <unknown@mandriva.org> | 2002-07-18 10:15:29 +0000 |
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committer | Mystery Man <unknown@mandriva.org> | 2002-07-18 10:15:29 +0000 |
commit | 700529a81000e551676a591369fc7c9ea13a1a33 (patch) | |
tree | cf19449afbd0ef4f2b12faffa7657a38ab578b99 /mdk-stage1/newt/form.c | |
parent | 1f295b1f8bfe64f293a79900161b085a37009dee (diff) | |
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This commit was manufactured by cvs2svn to create tag 'V1_1_8_6mdk'.V1_1_8_6mdk
Diffstat (limited to 'mdk-stage1/newt/form.c')
-rw-r--r-- | mdk-stage1/newt/form.c | 712 |
1 files changed, 0 insertions, 712 deletions
diff --git a/mdk-stage1/newt/form.c b/mdk-stage1/newt/form.c deleted file mode 100644 index 4ad465e38..000000000 --- a/mdk-stage1/newt/form.c +++ /dev/null @@ -1,712 +0,0 @@ -#include <unistd.h> -#include <slang.h> -#include <stdarg.h> -#include <stdlib.h> -#include <sys/time.h> -#include <sys/types.h> - -#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; -} |