277 lines
7.2 KiB
C++
277 lines
7.2 KiB
C++
//
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// "$Id: demo.cxx,v 1.4 1998/12/02 15:52:41 mike Exp $"
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//
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// Main demo program for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998 by Bill Spitzak and others.
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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 library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// USA.
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//
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// Please report all bugs and problems to "fltk-bugs@easysw.com".
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//
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#if defined(WIN32) && !defined(CYGNUS)
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# include <direct.h>
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//# define chdir _chdir
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#else
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# include <unistd.h>
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#endif
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#include <FL/Fl.H>
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#include <FL/Fl_Window.H>
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#include <FL/Fl_Box.H>
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#include <FL/Fl_Button.H>
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#include <FL/filename.H>
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/* The form description */
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void doexit(Fl_Widget *, void *);
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void doback(Fl_Widget *, void *);
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void dobut(Fl_Widget *, long);
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Fl_Window *form;
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Fl_Button *but[9];
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void create_the_forms() {
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Fl_Widget *obj;
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form = new Fl_Window(370, 450);
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obj = new Fl_Box(FL_FRAME_BOX,20,390,330,40,"Fltk Demonstration");
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obj->color(FL_GRAY-4);
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obj->labelsize(24);
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obj->labelfont(FL_BOLD);
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obj->labeltype(FL_ENGRAVED_LABEL);
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obj = new Fl_Box(FL_FRAME_BOX,20,50,330,330,0);
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obj->color(FL_GRAY-8);
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obj = new Fl_Button(130,10,110,30,"Exit");
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obj->callback(doexit);
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obj = new Fl_Button(20,50,330,380); obj->type(FL_HIDDEN_BUTTON);
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obj->callback(doback);
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obj = but[0] = new Fl_Button(40,270,90,90);
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obj = but[1] = new Fl_Button(140,270,90,90);
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obj = but[2] = new Fl_Button(240,270,90,90);
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obj = but[5] = new Fl_Button(240,170,90,90);
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obj = but[4] = new Fl_Button(140,170,90,90);
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obj = but[3] = new Fl_Button(40,170,90,90);
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obj = but[6] = new Fl_Button(40,70,90,90);
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obj = but[7] = new Fl_Button(140,70,90,90);
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obj = but[8] = new Fl_Button(240,70,90,90);
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for (int i=0; i<9; i++) {
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but[i]->align(FL_ALIGN_WRAP);
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but[i]->callback(dobut, i);
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}
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form->forms_end();
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}
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/* Maintaining and building up the menus. */
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typedef struct {
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char name[64];
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int numb;
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char iname[9][64];
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char icommand[9][64];
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} MENU;
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#define MAXMENU 32
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MENU menus[MAXMENU];
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int mennumb = 0;
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int find_menu(char nnn[])
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/* Returns the number of a given menu name. */
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{
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int i;
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for (i=0; i<mennumb; i++)
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if (strcmp(menus[i].name,nnn) == 0) return i;
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return -1;
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}
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void create_menu(char nnn[])
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/* Creates a new menu with name nnn */
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{
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if (mennumb == MAXMENU -1) return;
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strcpy(menus[mennumb].name,nnn);
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menus[mennumb].numb = 0;
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mennumb++;
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}
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void addto_menu(char men[], char item[], char comm[])
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/* Adds an item to a menu */
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{
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int n = find_menu(men);
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if (n<0) { create_menu(men); n = find_menu(men); }
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if (menus[n].numb == 9) return;
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strcpy(menus[n].iname[menus[n].numb],item);
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strcpy(menus[n].icommand[menus[n].numb],comm);
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menus[n].numb++;
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}
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/* Button to Item conversion and back. */
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int b2n[][9] = {
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{ -1, -1, -1, -1, 0, -1, -1, -1, -1},
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{ -1, -1, -1, 0, -1, 1, -1, -1, -1},
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{ 0, -1, -1, -1, 1, -1, -1, -1, 2},
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{ 0, -1, 1, -1, -1, -1, 2, -1, 3},
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{ 0, -1, 1, -1, 2, -1, 3, -1, 4},
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{ 0, -1, 1, 2, -1, 3, 4, -1, 5},
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{ 0, -1, 1, 2, 3, 4, 5, -1, 6},
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{ 0, 1, 2, 3, -1, 4, 5, 6, 7},
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{ 0, 1, 2, 3, 4, 5, 6, 7, 8}
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};
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int n2b[][9] = {
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{ 4, -1, -1, -1, -1, -1, -1, -1, -1},
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{ 3, 5, -1, -1, -1, -1, -1, -1, -1},
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{ 0, 4, 8, -1, -1, -1, -1, -1, -1},
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{ 0, 2, 6, 8, -1, -1, -1, -1, -1},
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{ 0, 2, 4, 6, 8, -1, -1, -1, -1},
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{ 0, 2, 3, 5, 6, 8, -1, -1, -1},
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{ 0, 2, 3, 4, 5, 6, 8, -1, -1},
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{ 0, 1, 2, 3, 5, 6, 7, 8, -1},
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{ 0, 1, 2, 3, 4, 5, 6, 7, 8}
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};
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int but2numb(int bnumb, int maxnumb)
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/* Transforms a button number to an item number when there are
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maxnumb items in total. -1 if the button should not exist. */
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{ return b2n[maxnumb][bnumb]; }
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int numb2but(int inumb, int maxnumb)
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/* Transforms an item number to a button number when there are
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maxnumb items in total. -1 if the item should not exist. */
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{ return n2b[maxnumb][inumb]; }
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/* Pushing and Popping menus */
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char stack[64][32];
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char stsize = 0;
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void push_menu(char nnn[])
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/* Pushes a menu to be visible */
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{
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int n,i,bn;
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int men = find_menu(nnn);
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if (men < 0) return;
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n = menus[men].numb;
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for (i=0; i<9; i++) but[i]->hide();
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for (i=0; i<n; i++)
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{
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bn = numb2but(i,n-1);
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but[bn]->show();
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but[bn]->label(menus[men].iname[i]);
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// if (menus[men].icommand[i][0] == '@')
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// but[bn]->color(FL_GRAY-8);
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// else
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// but[bn]->color(FL_GRAY);
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}
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strcpy(stack[stsize],nnn);
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stsize++;
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}
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void pop_menu()
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/* Pops a menu */
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{
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if (stsize<=1) return;
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stsize -= 2;
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push_menu(stack[stsize]);
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}
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/* The callback Routines */
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void dobut(Fl_Widget *, long arg)
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/* handles a button push */
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{
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int men = find_menu(stack[stsize-1]);
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int n = menus[men].numb;
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int bn = but2numb( (int) arg, n-1);
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if (menus[men].icommand[bn][0] == '@')
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push_menu(menus[men].icommand[bn]);
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else
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system(menus[men].icommand[bn]);
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}
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void doback(Fl_Widget *, void *) {pop_menu();}
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void doexit(Fl_Widget *, void *) {exit(0);}
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int load_the_menu(const char fname[])
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/* Loads the menu file. Returns whether successful. */
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{
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FILE *fin;
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char line[256], mname[64],iname[64],cname[64];
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int i,j;
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fin = fopen(fname,"r");
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if (fin == NULL)
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{
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// fl_show_message("ERROR","","Cannot read the menu description file.");
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return 0;
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}
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for (;;) {
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if (fgets(line,256,fin) == NULL) break;
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j = 0; i = 0;
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while (line[i] == ' ' || line[i] == '\t') i++;
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if (line[i] == '\n') continue;
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if (line[i] == '#') continue;
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while (line[i] != ':' && line[i] != '\n') mname[j++] = line[i++];
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mname[j] = '\0';
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if (line[i] == ':') i++;
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j = 0;
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while (line[i] != ':' && line[i] != '\n')
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{
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if (line[i] == '\\') {
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i++;
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if (line[i] == 'n') iname[j++] = '\n';
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else iname[j++] = line[i];
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i++;
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} else
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iname[j++] = line[i++];
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}
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iname[j] = '\0';
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if (line[i] == ':') i++;
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j = 0;
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while (line[i] != ':' && line[i] != '\n') cname[j++] = line[i++];
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cname[j] = '\0';
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addto_menu(mname,iname,cname);
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}
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fclose(fin);
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return 1;
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}
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int main(int argc, char **argv) {
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create_the_forms();
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char buf[256];
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strcpy(buf, argv[0]);
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filename_setext(buf,".menu");
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const char *fname = buf;
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int i = 0;
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if (!Fl::args(argc,argv,i) || i < argc-1)
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Fl::fatal("Usage: %s <switches> <menufile>\n%s",Fl::help);
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if (i < argc) fname = argv[i];
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if (!load_the_menu(fname)) Fl::fatal("Can't open %s",fname);
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strcpy(buf,fname);
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const char *c = filename_name(buf);
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if (c > buf) {buf[c-buf] = 0; chdir(buf);}
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push_menu("@main");
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form->show(argc,argv);
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Fl::run();
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return 0;
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}
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//
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// End of "$Id: demo.cxx,v 1.4 1998/12/02 15:52:41 mike Exp $".
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//
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