fltk/test/demo.cxx

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//
// "$Id$"
//
// Main demo program for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2005 by Bill Spitzak and others.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems on the following page:
//
// http://www.fltk.org/str.php
//
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#if defined(WIN32) && !defined(__CYGWIN__)
# include <direct.h>
#else
# include <unistd.h>
#endif
#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Box.H>
#include <FL/Fl_Button.H>
#include <FL/filename.H>
#include <FL/x.H>
/* The form description */
void doexit(Fl_Widget *, void *);
void doback(Fl_Widget *, void *);
void dobut(Fl_Widget *, long);
Fl_Window *form;
Fl_Button *but[9];
void create_the_forms() {
Fl_Widget *obj;
form = new Fl_Window(370, 450);
obj = new Fl_Box(FL_FRAME_BOX,20,390,330,40,"FLTK Demonstration");
obj->color(FL_GRAY-4);
obj->labelsize(24);
obj->labelfont(FL_BOLD);
obj->labeltype(FL_ENGRAVED_LABEL);
obj = new Fl_Box(FL_FRAME_BOX,20,50,330,330,0);
obj->color(FL_GRAY-8);
obj = new Fl_Button(130,10,110,30,"Exit");
obj->callback(doexit);
obj = new Fl_Button(20,50,330,380); obj->type(FL_HIDDEN_BUTTON);
obj->callback(doback);
obj = but[0] = new Fl_Button(40,270,90,90);
obj = but[1] = new Fl_Button(140,270,90,90);
obj = but[2] = new Fl_Button(240,270,90,90);
obj = but[5] = new Fl_Button(240,170,90,90);
obj = but[4] = new Fl_Button(140,170,90,90);
obj = but[3] = new Fl_Button(40,170,90,90);
obj = but[6] = new Fl_Button(40,70,90,90);
obj = but[7] = new Fl_Button(140,70,90,90);
obj = but[8] = new Fl_Button(240,70,90,90);
for (int i=0; i<9; i++) {
but[i]->align(FL_ALIGN_WRAP);
but[i]->callback(dobut, i);
}
form->forms_end();
}
/* Maintaining and building up the menus. */
typedef struct {
char name[64];
int numb;
char iname[9][64];
char icommand[9][64];
} MENU;
#define MAXMENU 32
MENU menus[MAXMENU];
int mennumb = 0;
int find_menu(const char* nnn)
/* Returns the number of a given menu name. */
{
int i;
for (i=0; i<mennumb; i++)
if (strcmp(menus[i].name,nnn) == 0) return i;
return -1;
}
void create_menu(const char* nnn)
/* Creates a new menu with name nnn */
{
if (mennumb == MAXMENU -1) return;
strcpy(menus[mennumb].name,nnn);
menus[mennumb].numb = 0;
mennumb++;
}
void addto_menu(const char* men, const char* item, const char* comm)
/* Adds an item to a menu */
{
int n = find_menu(men);
if (n<0) { create_menu(men); n = find_menu(men); }
if (menus[n].numb == 9) return;
strcpy(menus[n].iname[menus[n].numb],item);
strcpy(menus[n].icommand[menus[n].numb],comm);
menus[n].numb++;
}
/* Button to Item conversion and back. */
int b2n[][9] = {
{ -1, -1, -1, -1, 0, -1, -1, -1, -1},
{ -1, -1, -1, 0, -1, 1, -1, -1, -1},
{ 0, -1, -1, -1, 1, -1, -1, -1, 2},
{ 0, -1, 1, -1, -1, -1, 2, -1, 3},
{ 0, -1, 1, -1, 2, -1, 3, -1, 4},
{ 0, -1, 1, 2, -1, 3, 4, -1, 5},
{ 0, -1, 1, 2, 3, 4, 5, -1, 6},
{ 0, 1, 2, 3, -1, 4, 5, 6, 7},
{ 0, 1, 2, 3, 4, 5, 6, 7, 8}
};
int n2b[][9] = {
{ 4, -1, -1, -1, -1, -1, -1, -1, -1},
{ 3, 5, -1, -1, -1, -1, -1, -1, -1},
{ 0, 4, 8, -1, -1, -1, -1, -1, -1},
{ 0, 2, 6, 8, -1, -1, -1, -1, -1},
{ 0, 2, 4, 6, 8, -1, -1, -1, -1},
{ 0, 2, 3, 5, 6, 8, -1, -1, -1},
{ 0, 2, 3, 4, 5, 6, 8, -1, -1},
{ 0, 1, 2, 3, 5, 6, 7, 8, -1},
{ 0, 1, 2, 3, 4, 5, 6, 7, 8}
};
int but2numb(int bnumb, int maxnumb)
/* Transforms a button number to an item number when there are
maxnumb items in total. -1 if the button should not exist. */
{ return b2n[maxnumb][bnumb]; }
int numb2but(int inumb, int maxnumb)
/* Transforms an item number to a button number when there are
maxnumb items in total. -1 if the item should not exist. */
{ return n2b[maxnumb][inumb]; }
/* Pushing and Popping menus */
char stack[64][32];
int stsize = 0;
void push_menu(const char* nnn)
/* Pushes a menu to be visible */
{
int n,i,bn;
int men = find_menu(nnn);
if (men < 0) return;
n = menus[men].numb;
for (i=0; i<9; i++) but[i]->hide();
for (i=0; i<n; i++)
{
bn = numb2but(i,n-1);
but[bn]->show();
but[bn]->label(menus[men].iname[i]);
if (menus[men].icommand[i][0] != '@') but[bn]->tooltip(menus[men].icommand[i]);
else but[bn]->tooltip(0);
}
strcpy(stack[stsize],nnn);
stsize++;
}
void pop_menu()
/* Pops a menu */
{
if (stsize<=1) return;
stsize -= 2;
push_menu(stack[stsize]);
}
/* The callback Routines */
void dobut(Fl_Widget *, long arg)
/* handles a button push */
{
int men = find_menu(stack[stsize-1]);
int n = menus[men].numb;
int bn = but2numb( (int) arg, n-1);
if (menus[men].icommand[bn][0] == '@')
push_menu(menus[men].icommand[bn]);
else {
#ifdef WIN32
STARTUPINFO suInfo; // Process startup information
PROCESS_INFORMATION prInfo; // Process information
memset(&suInfo, 0, sizeof(suInfo));
suInfo.cb = sizeof(suInfo);
int icommand_length = strlen(menus[men].icommand[bn]);
char* copy_of_icommand = new char[icommand_length+1];
strcpy(copy_of_icommand,menus[men].icommand[bn]);
// On WIN32 the .exe suffix needs to be appended to the command
// whilst leaving any additional parameters unchanged - this
// is required to handle the correct conversion of cases such as :
// `../fluid/fluid valuators.fl' to '../fluid/fluid.exe valuators.fl'.
// skip leading spaces.
char* start_command = copy_of_icommand;
while(*start_command == ' ') ++start_command;
// find the space between the command and parameters if one exists.
char* start_parameters = strchr(start_command,' ');
char* command = new char[icommand_length+6]; // 6 for extra 'd.exe\0'
if (start_parameters==NULL) { // no parameters required.
# ifdef _DEBUG
sprintf(command, "%sd.exe", start_command);
# else
sprintf(command, "%s.exe", start_command);
# endif // _DEBUG
} else { // parameters required.
// break the start_command at the intermediate space between
// start_command and start_parameters.
*start_parameters = 0;
// move start_paremeters to skip over the intermediate space.
++start_parameters;
# ifdef _DEBUG
sprintf(command, "%sd.exe %s", start_command, start_parameters);
# else
sprintf(command, "%s.exe %s", start_command, start_parameters);
# endif // _DEBUG
}
CreateProcess(NULL, command, NULL, NULL, FALSE,
NORMAL_PRIORITY_CLASS, NULL, NULL, &suInfo, &prInfo);
delete command;
delete copy_of_icommand;
#else // NON WIN32 systems.
int icommand_length = strlen(menus[men].icommand[bn]);
char* command = new char[icommand_length+5]; // 5 for extra './' and ' &\0'
sprintf(command, "./%s &", menus[men].icommand[bn]);
system(command);
delete command;
#endif // WIN32
}
}
void doback(Fl_Widget *, void *) {pop_menu();}
void doexit(Fl_Widget *, void *) {exit(0);}
int load_the_menu(const char* fname)
/* Loads the menu file. Returns whether successful. */
{
FILE *fin;
char line[256], mname[64],iname[64],cname[64];
int i,j;
fin = fopen(fname,"r");
if (fin == NULL)
{
// fl_show_message("ERROR","","Cannot read the menu description file.");
return 0;
}
for (;;) {
if (fgets(line,256,fin) == NULL) break;
j = 0; i = 0;
while (line[i] == ' ' || line[i] == '\t') i++;
if (line[i] == '\n') continue;
if (line[i] == '#') continue;
while (line[i] != ':' && line[i] != '\n') mname[j++] = line[i++];
mname[j] = '\0';
if (line[i] == ':') i++;
j = 0;
while (line[i] != ':' && line[i] != '\n')
{
if (line[i] == '\\') {
i++;
if (line[i] == 'n') iname[j++] = '\n';
else iname[j++] = line[i];
i++;
} else
iname[j++] = line[i++];
}
iname[j] = '\0';
if (line[i] == ':') i++;
j = 0;
while (line[i] != ':' && line[i] != '\n') cname[j++] = line[i++];
cname[j] = '\0';
addto_menu(mname,iname,cname);
}
fclose(fin);
return 1;
}
int main(int argc, char **argv) {
putenv((char *)"FLTK_DOCDIR=../documentation");
create_the_forms();
char buf[256];
strcpy(buf, argv[0]);
#if ( defined _MSC_VER || defined __MWERKS__ ) && defined _DEBUG
// MS_VisualC appends a 'd' to debugging executables. remove it.
fl_filename_setext( buf, "" );
buf[ strlen(buf)-1 ] = 0;
#endif
fl_filename_setext(buf,".menu");
const char *fname = buf;
int i = 0;
if (!Fl::args(argc,argv,i) || i < argc-1)
Fl::fatal("Usage: %s <switches> <menufile>\n%s",argv[0],Fl::help);
if (i < argc) fname = argv[i];
if (!load_the_menu(fname)) Fl::fatal("Can't open %s",fname);
strcpy(buf,fname);
const char *c = fl_filename_name(buf);
if (c > buf) {buf[c-buf] = 0; chdir(buf);}
push_menu("@main");
form->show(argc,argv);
Fl::run();
return 0;
}
//
// End of "$Id$".
//