704 lines
18 KiB
C++
704 lines
18 KiB
C++
// This may look like C code, but it is really -*- C++ -*-
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// ------------------------------------------------------------------
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// The Goldware Library
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// Copyright (C) 1990-1999 Odinn Sorensen
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// Copyright (C) 1999-2000 Alexander S. Aganichev
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// ------------------------------------------------------------------
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this program; if not, write to the Free
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// Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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// MA 02111-1307, USA
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// ------------------------------------------------------------------
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// $Id$
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// ------------------------------------------------------------------
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// Based on CXL by Mike Smedley.
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// ------------------------------------------------------------------
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// Lets user pick from an array of strings.
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// ------------------------------------------------------------------
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#include <gctype.h>
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#include <cstdlib>
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#include <cstring>
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#include <gkbdcode.h>
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#include <gmoubase.h>
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#include <gtimall.h>
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#include <gwinall.h>
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extern char m_title[];
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// ------------------------------------------------------------------
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int wpickstr_tag = false;
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// ------------------------------------------------------------------
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// define record that will hold pick window info
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struct r_t {
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int numelems;
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int lastelem;
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int curr;
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int first;
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int last;
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int strsperline;
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int strsperwin;
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int maxstrlen;
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int wwidth;
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int wheight;
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int fillspaces;
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int gapspaces;
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int xtraspaces;
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vattr winattr;
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vattr barattr;
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int scrollbar;
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};
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// ------------------------------------------------------------------
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// this function will display the mouse
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// cursor if mouse cursor mode is on
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static void show_mouse_cursor_pck() {
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#ifdef GOLD_MOUSE
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if(gmou.FreeCursor()) {
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gmou.ShowCursor();
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gmou.SetCursor(0,0xFFFF,((LGREY_|_LGREY)<<8));
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}
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#endif
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}
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// ------------------------------------------------------------------
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// this function will hide the mouse
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// cursor if mouse cursor mode is on
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static void hide_mouse_cursor_pck() {
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#ifdef GOLD_MOUSE
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if(gmou.FreeCursor())
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gmou.HideCursor();
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#endif
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}
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// ------------------------------------------------------------------
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// this function updates the current item by either
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// displaying or erasing the selection bar on it
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static void update_curr(char* strarr[], r_t* r, int bar) {
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// calculate row and column string will be displayed
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// at, then print out the string character-by-character
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int crow = (r->curr-r->first)/r->strsperline;
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int temp = r->curr-((crow*r->strsperline)+r->first);
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int ccol = (temp*r->maxstrlen)+((temp+1)*(r->gapspaces))+r->xtraspaces;
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wgotoxy(crow,ccol);
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hide_mouse_cursor_pck();
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wprintns(crow, ccol, bar ? r->barattr : r->winattr, strarr[r->curr], r->maxstrlen);
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show_mouse_cursor_pck();
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}
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// ------------------------------------------------------------------
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static void update_line(char* strarr[], r_t* r, int wrow, int upcurr) {
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int nomore = false;
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int ccol = r->gapspaces + r->xtraspaces;
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int celem = (wrow*r->strsperline) + r->first;
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if(celem >= r->numelems)
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nomore = true;
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for(int j=0; j<r->strsperline; j++) {
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int ccolbeg = ccol;
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wprintns(wrow, ccolbeg, (upcurr and r->curr==celem) ? r->barattr : r->winattr, nomore ? "" : strarr[celem], r->maxstrlen);
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ccol += r->maxstrlen;
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if(++celem >= r->numelems)
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nomore = true;
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ccol += r->gapspaces;
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}
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}
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// ------------------------------------------------------------------
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// this function will update all items in the window
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static void update_window(char* strarr[], r_t* r) {
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hide_mouse_cursor_pck();
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for(int crow=0; crow<r->wheight; crow++)
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update_line(strarr, r, crow, 1);
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show_mouse_cursor_pck();
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}
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// ------------------------------------------------------------------
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// this function will find the element number of the
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// first element on the same line as the given element
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static int e_begline(r_t* r, int elem) {
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return (elem/r->strsperline) * r->strsperline;
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}
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// ------------------------------------------------------------------
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// this function will find the first element in a
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// window, using a given last element as input
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static int e_begwin(r_t* r, int lelem) {
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int beg = e_begline(r,lelem) + r->strsperline - r->strsperwin;
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if(beg < 0)
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beg = 0;
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return beg;
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}
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// ------------------------------------------------------------------
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// this function will find the element number of the
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// last element on the same line as the given element
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static int e_endline(r_t* r, int elem) {
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int end = (((elem/r->strsperline)+1)*r->strsperline)-1;
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if(end>=r->numelems)
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end = r->lastelem;
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return end;
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}
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// ------------------------------------------------------------------
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// this function will find the last element in a
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// window, using a given first element as input
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static int e_endwin(r_t* r, int felem) {
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int end = felem + r->strsperwin - 1;
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if(end > (r->lastelem))
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end = r->lastelem;
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return end;
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}
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// ------------------------------------------------------------------
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static void goto_item(r_t* r, char* strarr[], int elem) {
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if(elem<0 or elem>r->lastelem)
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elem = 0;
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int outside = (elem<r->first or elem>r->last) ? YES : NO;
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if(outside == NO)
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update_curr(strarr,r,0);
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r->curr = elem;
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if(outside) {
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r->first = e_begwin(r,r->last = e_endwin(r,e_begline(r,r->curr)));
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update_window(strarr,r);
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}
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else {
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update_curr(strarr,r,1);
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}
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}
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// ------------------------------------------------------------------
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// this function determines if the mouse cursor is on a item
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#ifdef GOLD_MOUSE
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static int mouse_on_item(r_t* r, int mcrow, int mccol) {
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int found = -1;
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int srow = gwin.active->srow;
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int scol = gwin.active->scol;
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int border = gwin.active->border;
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for(int i=r->first; i<=r->last; i++) {
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if(mcrow==(srow+border+((i-r->first)/r->strsperline))) {
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int start = scol+border+r->xtraspaces+r->gapspaces+((i%r->strsperline)*(r->maxstrlen+r->gapspaces));
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int end = start+r->maxstrlen-1;
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if(mccol>=start and mccol<=end) {
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found = i;
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break;
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}
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}
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}
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if(found==-1 and r->scrollbar and mccol==gwin.active->ecol) {
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if(mcrow==srow+1)
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found=-2;
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else {
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if(mcrow==gwin.active->erow-1)
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found=-3;
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}
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}
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return found;
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}
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#endif
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// ------------------------------------------------------------------
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static void page_down(char* strarr[], r_t* r) {
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if(r->curr != r->last) {
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r->curr = r->last;
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update_window(strarr, r);
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}
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else if(r->last != (r->lastelem)) {
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int i = r->curr-r->first;
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r->last = e_endwin(r,r->last+1);
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r->first = e_begwin(r, r->last);
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if((r->curr = r->first+i) > (r->lastelem))
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r->curr -= r->strsperline;
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update_window(strarr, r);
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}
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}
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// ------------------------------------------------------------------
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static void page_up(char* strarr[], r_t* r) {
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if(r->curr != r->first) {
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r->curr = r->first;
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update_window(strarr, r);
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}
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else if(r->first) {
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int i = r->curr-r->first;
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r->first = e_begwin(r,r->first-1);
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r->last = e_endwin(r, r->first);
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r->curr = r->first+i;
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update_window(strarr,r);
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}
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}
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// ------------------------------------------------------------------
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static void scroll_down(char* strarr[], r_t* r, int upcurr) {
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if(r->first) {
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hide_mouse_cursor_pck();
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if(upcurr)
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update_curr(strarr,r,0);
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r->first -= r->strsperline;
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r->last = e_endline(r,r->last-r->strsperline);
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if(upcurr>1)
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r->curr -= r->strsperline;
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if(r->first != e_begline(r,r->last))
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wscroll(1,SDOWN);
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update_line(strarr, r, 0, (upcurr>2) ? 0 : upcurr);
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show_mouse_cursor_pck();
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}
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}
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// ------------------------------------------------------------------
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static void scroll_up(char* strarr[], r_t* r, int upcurr) {
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if(r->last!=(r->lastelem)) {
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hide_mouse_cursor_pck();
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if(upcurr)
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update_curr(strarr,r,0);
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r->first+=r->strsperline;
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r->last=e_endline(r,r->last+1);
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if(upcurr>1)
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if((r->curr+r->strsperline)<=r->last)
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r->curr+=r->strsperline;
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if(r->first!=e_begline(r,r->last))
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wscroll(1,SUP);
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update_line(strarr,r,r->wheight-1,(upcurr>2)?0:upcurr);
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show_mouse_cursor_pck();
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}
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}
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// ------------------------------------------------------------------
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// this function reads the mouse for input
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static gkey read_mouse(char* strarr[], r_t* r) {
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#ifdef GOLD_MOUSE
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// if free-floating mouse cursor support is on
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if(gmou.FreeCursor()) {
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// clear mouse button queue
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gmou.ClearEvents();
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// loop until a key is pressed
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while(!kbxhit() and gkbd.kbuf==NULL) {
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// call the keyboard loop function, if defined
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//if(gkbd.kbloop!=NULL)
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//(*gkbd.kbloop)();
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// see if the right button (Esc) was pressed
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gmou.GetRightRelease();
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if(gmou.Count())
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return Key_Esc;
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// see where mouse cursor is at - if it is on a scroll bar
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// or menu item, and the left button is pressed, then scroll
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// menu or select item
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gmou.GetStatus();
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int i = mouse_on_item(r,gmou.Row(),gmou.Column());
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switch(i) {
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case -1:
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gmou.ClearEvents();
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break;
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case -2:
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if(gmou.LeftButton()) {
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scroll_down(strarr,r,3);
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if(gvid->isbios())
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usleep(50);
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gmou.ClearEvents();
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}
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break;
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case -3:
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if(gmou.LeftButton()) {
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scroll_up(strarr,r,3);
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if(gvid->isbios())
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usleep(50);
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gmou.ClearEvents();
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}
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break;
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default:
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gmou.GetLeftRelease();
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if(gmou.Count()) {
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r->curr = i;
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return Key_Ent;
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}
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}
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}
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}
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#endif
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// return zero - it means a key was pressed
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return 0;
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}
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// ------------------------------------------------------------------
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int wpickstr(int srow, int scol, int erow, int ecol, int btype, vattr bordattr, vattr winattr, vattr barattr, char* strarr[], int initelem, VfvCP open) {
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int i, j, maxlen, outside;
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gkey xch;
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char ch;
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char* p;
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r_t r;
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int quickpos = (strarr[0][0] == ' ') ? 1 : 0;
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// go through input array and determine the longest
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// string, and count the number of elements in the array
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maxlen = strlen(m_title);
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for (i = 0; strarr[i] != NULL; i++)
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if ((j = strlen(strarr[i])) > maxlen)
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maxlen = j;
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r.maxstrlen = maxlen;
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r.lastelem = ((r.numelems=i)-1);
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r.winattr = winattr;
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r.barattr = barattr;
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// see if window is to have a border
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int border = (btype==5) ? NO : YES;
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// if ecol == -1 then adjust it to conform to length of longest string
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if(ecol==-1)
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ecol = scol+border+r.maxstrlen+border-1;
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// calculate window area width and height
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r.wwidth = (ecol-border)-(scol+border)+1;
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r.wheight = (erow-border)-(srow+border)+1;
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// make sure longest string can fit in window
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if(r.maxstrlen > r.wwidth)
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r.maxstrlen = r.wwidth;
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// open window which strings will reside in
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hide_mouse_cursor_pck();
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if(!wopen(srow,scol,erow,ecol,btype,bordattr,winattr,bordattr))
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return -1;
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// if mouse cursor mode is on and window has a border,
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// display scroll indicator arrows on right window border
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#ifdef GOLD_MOUSE
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if(gmou.FreeCursor() and (btype!=5) and ((srow+2) < erow)) {
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vputc(srow+1,ecol,bordattr,(char) 24);
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vputc(erow-1,ecol,bordattr,(char) 25);
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r.scrollbar=true;
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}
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else {
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#endif
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r.scrollbar=false;
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#ifdef GOLD_MOUSE
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}
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#endif
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show_mouse_cursor_pck();
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// if an open function has been specified, then call it
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if(open!=NULL)
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open();
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// if mouse cursor mode is on, then turn on mouse cursor
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show_mouse_cursor_pck();
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// calculate how many strings can fit into 1 window line, number of
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// filler spaces needed per window line, number of spaces per gap in
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// between strings, number of extra spaces to add to first gap, and
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// number of strings that can fit inside the window
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r.strsperline = (r.wwidth-2)/(r.maxstrlen+2);
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if(!r.strsperline)
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r.strsperline++;
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r.fillspaces = r.wwidth-(r.strsperline*r.maxstrlen);
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r.gapspaces = r.fillspaces/(r.strsperline+1);
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r.xtraspaces = (r.fillspaces%(r.strsperline+1))/2;
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r.strsperwin = r.strsperline*r.wheight;
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// initialize first, last, and current elements
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r.curr = r.first = 0;
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r.last = (r.numelems<r.strsperwin) ? (r.lastelem) : (r.strsperwin-1);
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// move selection bar to specified initial element
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goto_item(&r,strarr,initelem);
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// fill window with as many strings as can fit and display bar
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update_window(strarr,&r);
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// loop until an element is selected or Escape is pressed
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for(;;) {
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// get keystroke/mouse movement
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gkbd.inmenu = true;
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xch = read_mouse(strarr,&r);
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if(!xch) {
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xch = getxch();
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}
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gkbd.inmenu=false;
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// test keystroke for a special key
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switch(xch) {
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case Key_Space:
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if(wpickstr_tag) {
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p = strarr[r.curr];
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switch(*p) {
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case ' ':
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*p = (char)wpickstr_tag;
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update_curr(strarr,&r,1);
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break;
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default:
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*p = ' ';
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update_curr(strarr,&r,1);
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}
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kbput(Key_Dwn);
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}
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break;
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case Key_Ins:
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case Key_PlsG:
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case Key_S_Equ:
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if(wpickstr_tag) {
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strarr[r.curr][0] = (char)wpickstr_tag;
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update_curr(strarr,&r,1);
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kbput(Key_Dwn);
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}
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break;
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case Key_Del:
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case Key_Min:
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case Key_MinG:
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if(wpickstr_tag) {
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strarr[r.curr][0] = ' ';
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update_curr(strarr,&r,1);
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kbput(Key_Dwn);
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}
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break;
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case Key_StrG:
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case Key_S_8:
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if(wpickstr_tag) {
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for(i=0; i<r.numelems; i++)
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strarr[i][0] = (char)wpickstr_tag;
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update_window(strarr,&r);
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|
}
|
|
break;
|
|
|
|
case Key_Sls:
|
|
if(wpickstr_tag) {
|
|
for(i=0; i<r.numelems; i++)
|
|
strarr[i][0] = ' ';
|
|
update_window(strarr,&r);
|
|
}
|
|
break;
|
|
|
|
case Key_Esc:
|
|
|
|
// close window and set error to Escape press code
|
|
if(gwin.esc) {
|
|
hide_mouse_cursor_pck();
|
|
wclose();
|
|
gwin.werrno=W_ESCPRESS;
|
|
return -1;
|
|
}
|
|
break;
|
|
|
|
case Key_Ent:
|
|
|
|
// close window and return subscript of selected string
|
|
hide_mouse_cursor_pck();
|
|
wclose();
|
|
gwin.werrno=W_NOERROR;
|
|
return(r.curr);
|
|
|
|
case Key_Lft:
|
|
|
|
// move to the item to the left, scrolling if necessary
|
|
if(r.curr) {
|
|
update_curr(strarr,&r,0);
|
|
if(r.curr==r.first)
|
|
scroll_down(strarr,&r,0);
|
|
r.curr--;
|
|
update_curr(strarr,&r,1);
|
|
}
|
|
break;
|
|
|
|
case Key_Rgt:
|
|
|
|
// move to the item to the right, scrolling if necessary
|
|
if(r.curr!=r.lastelem) {
|
|
update_curr(strarr,&r,0);
|
|
if(r.curr==r.last)
|
|
scroll_up(strarr,&r,0);
|
|
r.curr++;
|
|
update_curr(strarr,&r,1);
|
|
}
|
|
break;
|
|
|
|
case Key_Up:
|
|
|
|
// move to the item up, scrolling if necessary
|
|
if((r.curr-r.strsperline)<r.first)
|
|
scroll_down(strarr,&r,2);
|
|
else {
|
|
update_curr(strarr,&r,0);
|
|
r.curr-=r.strsperline;
|
|
update_curr(strarr,&r,1);
|
|
}
|
|
break;
|
|
|
|
case Key_Dwn:
|
|
|
|
// move to the item down, scrolling if necessary
|
|
if((r.curr+r.strsperline)>r.last)
|
|
scroll_up(strarr,&r,((r.curr+r.strsperline)>r.lastelem) ? 0 : 2);
|
|
else {
|
|
update_curr(strarr,&r,0);
|
|
r.curr+=r.strsperline;
|
|
update_curr(strarr,&r,1);
|
|
}
|
|
break;
|
|
|
|
case Key_PgUp:
|
|
|
|
// move up 1 page. adjust position if at 1st element
|
|
page_up(strarr,&r);
|
|
break;
|
|
|
|
case Key_PgDn:
|
|
|
|
// move down 1 page. adjust position if at last element
|
|
page_down(strarr,&r);
|
|
break;
|
|
|
|
case Key_Home:
|
|
|
|
// set position to 1st element
|
|
if(r.curr) {
|
|
if((outside=r.first)==NO)
|
|
update_curr(strarr,&r,0);
|
|
r.first=r.curr=0;
|
|
if(outside) {
|
|
r.last=e_endwin(&r,r.first);
|
|
update_window(strarr,&r);
|
|
}
|
|
else {
|
|
update_curr(strarr,&r,1);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case Key_End:
|
|
|
|
// set position to last element
|
|
if(r.curr!=r.lastelem) {
|
|
if((outside=(r.last<(r.lastelem))?YES:NO)==NO)
|
|
update_curr(strarr,&r,0);
|
|
r.last=r.curr=r.lastelem;
|
|
if(outside) {
|
|
r.first=e_begwin(&r,r.last);
|
|
update_window(strarr,&r);
|
|
}
|
|
else {
|
|
update_curr(strarr,&r,1);
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
|
|
// if not an extended keypress, then search from current
|
|
// position for the item that begins with the same ASCII
|
|
// character as the keypress. If not found after current
|
|
// position, search from the beginning for a match
|
|
ch = (char)g_toupper(char(xch & 0xFF));
|
|
if(!ch)
|
|
break;
|
|
for(i=r.curr+1; i<r.numelems; i++)
|
|
if(ch==g_toupper(strarr[i][quickpos]))
|
|
break;
|
|
if(i==r.numelems) {
|
|
for(i=0;i<r.curr;i++)
|
|
if(ch==g_toupper(strarr[i][quickpos]))
|
|
break;
|
|
if(i==r.curr)
|
|
continue;
|
|
}
|
|
|
|
// a matching ASCII character was found. set position
|
|
// to matching element, adjusting window if necessary
|
|
goto_item(&r,strarr,i);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|