/***************************************************************************** Copyright (C) 1994,1997 Ivan A. Curtis. All rights reserved. This code must not be re-distributed without these copyright notices intact. ******************************************************************************* ******************************************************************************* Filename: ~icurtis/src/mx/request.c Description: Update History: (most recent first) I. Curtis 9-Apr-97 12:02 -- Updated I. Curtis 22-Mar-94 23:11 -- Created. ******************************************************************************/ #include "basic.h" #include "X11/keysym.h" #include "alert.h" #include "request.h" /****************************************** * Handle an event for a requester window * ******************************************/ int mx_request_event(Display *display, int screen, XEvent *event, mx_request *req, int *done) { XCharStruct xcs; KeySym key; int i, j, dir, asc, desc; char keys[10]; switch(event->type) { case Expose: if (event->xexpose.window != req->window) return False; /* draw the text string */ XDrawString(display, req->window, req->app->gcd, req->app->item_border, req->app->item_border + req->app->ascent, req->text, req->length); /* determine cursor y posn and height */ req->cur_y = req->app->item_border; req->cur_h = req->app->ascent + req->app->descent; /* cursor x position */ if (req->cp == 0) req->cur_x = req->app->item_border; else { XTextExtents(req->app->font, req->text, req->cp, &dir, &asc, &desc, &xcs); req->cur_x = req->app->item_border + xcs.width; } /* cursor width */ if (req->cp == req->length) XTextExtents(req->app->font, " ", 1, &dir, &asc, &desc, &xcs); else XTextExtents(req->app->font, req->text + req->cp, 1, &dir, &asc, &desc, &xcs); req->cur_w = xcs.width; if (req->inside) /* display cursor */ XFillRectangle(display, req->window, req->app->gcf, req->cur_x, req->cur_y, req->cur_w, req->cur_h); return True; break; case KeyPress: if (event->xkey.window != req->window) return False; j = XLookupString((XKeyPressedEvent*)event, keys, 10, &key, 0); if (j == 1 && keys[0] >= ' ' && keys[0] <= '~') { if (req->length < req->max_len - 1) { /* insert character */ for (i = req->length + 1; i > req->cp; i--) req->text[i] = req->text[i - 1]; req->length ++; req->text[req->cp] = keys[0]; req->cp ++; XClearArea(display, req->window, 0, 0, 0, 0, True); } return True; } if (key == XK_End || (j == 1 && keys[0] == 5)) { /* Ctrl-E */ req->cp = req->length; XClearArea(display, req->window, 0, 0, 0, 0, True); } else if (key == XK_Begin || key == XK_Home || (j == 1 && keys[0] == 1)) { /* Ctrl-A */ req->cp = 0; XClearArea(display, req->window, 0, 0, 0, 0, 1); } else if (key == XK_Right && req->cp < req->length) { req->cp ++; XClearArea(display, req->window, 0, 0, 0, 0, 1); } else if (key == XK_Left && req->cp > 0) { req->cp --; XClearArea(display, req->window, 0, 0, 0, 0, 1); } else if ((key == XK_BackSpace || (j == 1 && keys[0] == 4)) && req->cp < req->length) { /* Ctrl-D */ for (i = req->cp; i < req->length - 1; i++) req->text[i] = req->text[i + 1]; req->length --; XClearArea(display, req->window, 0, 0, 0, 0, 1); } else if (key == XK_Delete && req->cp > 0) { for (i = req->cp - 1; i < req->length - 1; i++) req->text[i] = req->text[i + 1]; req->length --; req->cp --; XClearArea(display, req->window, 0, 0, 0, 0, 1); } else if (j == 1 && keys[0] == 11 && req->cp < req->length) { /* Ctrl-K */ req->length = req->cp; XClearArea(display, req->window, 0, 0, 0, 0, 1); } else if (key == XK_Return || key == 1) { req->text[req->length] = '\0'; *done = 1; } return True; break; case LeaveNotify: if (event->xcrossing.window != req->window) return False; XFillRectangle(display, req->window, req->app->gcf, req->cur_x, req->cur_y, req->cur_w, req->cur_h); req->inside = 0; return True; break; case EnterNotify: if (event->xcrossing.window != req->window) return False; if (!req->inside) XFillRectangle(display, req->window, req->app->gcf, req->cur_x, req->cur_y, req->cur_w, req->cur_h); req->inside = 1; return True; break; } return False; } /***************************************** * Pop up a requester on the root window * * at position x y * *****************************************/ int mx_popup_request(Display *display, int screen, mx_panel *panel, int *x, int *y, char *text, int max_len) { mx_alert title; mx_request req; XEvent event; int done; if (!panel) return -1; /* determine dimensions of requester window */ req.app = panel->app; req.text = text; req.length = strlen(req.text); req.max_len = max_len; if (req.app->em * max_len > panel->width) req.width = req.app->em * max_len + 2 * req.app->item_border; else req.width = panel->width + 2 * req.app->item_border; req.height = req.app->ascent + req.app->descent + 2 * req.app->item_border; /* determine dimensions of title window */ title.app = req.app; title.width = req.width; title.height = req.height; title.start_item = 0; title.max_items = 1; title.item = panel->item + panel->first_item; /* make sure the wondows are on screen */ mx_adjust_xy(display, title.width + 2 * panel->app->win_border, req.height * 2 + 3 * panel->app->win_border, x, y); /* open title window and set event masks */ title.window = mx_transient_window_open(display, screen, title.app->win_border, *x, *y, title.width, title.height); XSelectInput(display, title.window, ExposureMask | OwnerGrabButtonMask | ButtonPressMask | ButtonReleaseMask | EnterWindowMask | LeaveWindowMask); title.inside = -1; title.momentary = 0; /* open requester window and set event masks */ req.window = mx_transient_window_open(display, screen, req.app->win_border, *x, *y + title.height + req.app->win_border, req.width, req.height); XSelectInput(display, req.window, ExposureMask | OwnerGrabButtonMask | ButtonPressMask | ButtonReleaseMask | EnterWindowMask | LeaveWindowMask | KeyPressMask); done = 0; req.inside = 0; req.cp = 0; while (!done) { XNextEvent(display, &event); if (mx_request_event(display, screen, &event, &req, &done)) continue; if (mx_alert_event(display, screen, &event, &title, &done, x, y)) continue; if (event.type == Expose && req.app->expose_fun) { if ((*(req.app->expose_fun))(&event)) continue; } } mx_window_close(display, title.window); mx_window_close(display, req.window); return 0; }