ref: 7e926451def20e69909b199adba48e7dceee608d
dir: /DoConfig/fltk/test/file_chooser.cxx/
//
// "$Id$"
//
// File chooser test program.
//
// Copyright 1999-2010 by Michael Sweet.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems on the following page:
//
// http://www.fltk.org/str.php
//
// Contents:
//
// main() - Create a file chooser and wait for a selection to
// be made.
// close_callback() - Close the main window...
// fc_callback() - Handle choices in the file chooser...
// pdf_check() - Check for and load the first page of a PDF file.
// ps_check() - Check for and load the first page of a PostScript
// file.
// show_callback() - Show the file chooser...
//
// extra_callback() - circle extra groups (none,group1,check_button);
//
//
// Include necessary headers...
//
#include <stdio.h>
#include <FL/Fl_File_Chooser.H>
#include <FL/Fl_File_Icon.H>
#include <FL/Fl_Shared_Image.H>
#include <FL/Fl_PNM_Image.H>
#include <FL/Fl_Light_Button.H>
#include <FL/Fl_Double_Window.H>
#include <string.h>
//
// Globals...
//
Fl_Input *filter;
Fl_File_Browser *files;
Fl_File_Chooser *fc;
Fl_Shared_Image *image = 0;
// for choosing extra groups
Fl_Choice *ch_extra;
// first extra group
Fl_Group *encodings = (Fl_Group*)0;
Fl_Choice *ch_enc;
// second extra widget
Fl_Check_Button *version = (Fl_Check_Button*)0;
//
// Functions...
//
void close_callback(void);
void create_callback(void);
void dir_callback(void);
void fc_callback(Fl_File_Chooser *, void *);
void multi_callback(void);
Fl_Image *pdf_check(const char *, uchar *, int);
Fl_Image *ps_check(const char *, uchar *, int);
void show_callback(void);
void extra_callback(Fl_Choice*,void*);
//
// 'main()' - Create a file chooser and wait for a selection to be made.
//
int // O - Exit status
main(int argc, // I - Number of command-line arguments
char *argv[]) // I - Command-line arguments
{
Fl_Double_Window *window;// Main window
Fl_Button *button;// Buttons
Fl_File_Icon *icon; // New file icon
// Make the file chooser...
Fl::scheme(NULL);
Fl_File_Icon::load_system_icons();
fc = new Fl_File_Chooser(".", "*", Fl_File_Chooser::SINGLE, "Fl_File_Chooser Test");
fc->callback(fc_callback);
// Register the PS and PDF image types...
Fl_Shared_Image::add_handler(pdf_check);
Fl_Shared_Image::add_handler(ps_check);
// Make the main window...
window = new Fl_Double_Window(400, 215, "File Chooser Test");
filter = new Fl_Input(50, 10, 315, 25, "Filter:");
int argn = 1;
#ifdef __APPLE__
// OS X may add the process number as the first argument - ignore
if (argc>argn && strncmp(argv[1], "-psn_", 5)==0)
argn++;
#endif
if (argc > argn)
filter->value(argv[argn]);
else
filter->value("PDF Files (*.pdf)\t"
"PostScript Files (*.ps)\t"
"Image Files (*.{bmp,gif,jpg,png})\t"
"C/C++ Source Files (*.{c,C,cc,cpp,cxx})");
button = new Fl_Button(365, 10, 25, 25);
button->labelcolor(FL_YELLOW);
button->callback((Fl_Callback *)show_callback);
icon = Fl_File_Icon::find(".", Fl_File_Icon::DIRECTORY);
icon->label(button);
button = new Fl_Light_Button(50, 45, 80, 25, "MULTI");
button->callback((Fl_Callback *)multi_callback);
button = new Fl_Light_Button(140, 45, 90, 25, "CREATE");
button->callback((Fl_Callback *)create_callback);
button = new Fl_Light_Button(240, 45, 115, 25, "DIRECTORY");
button->callback((Fl_Callback *)dir_callback);
//
ch_extra = new Fl_Choice(150, 75, 150, 25, "Extra Group:");
ch_extra->add("none|encodings group|check button");
ch_extra->value(0);
ch_extra->callback((Fl_Callback *)extra_callback);
//
files = new Fl_File_Browser(50, 105, 340, 75, "Files:");
files->align(FL_ALIGN_LEFT);
button = new Fl_Button(340, 185, 50, 25, "Close");
button->callback((Fl_Callback *)close_callback);
window->resizable(files);
window->end();
window->show(1, argv);
Fl::run();
return (0);
}
void
extra_callback(Fl_Choice*w,void*)
{
int val=w->value();
if (0 == val) fc->add_extra(NULL);
else if (1 == val) {
if(!encodings){
encodings=new Fl_Group(0,0,254,30);
ch_enc=new Fl_Choice(152,2,100,25,"Choose Encoding:");
ch_enc->add("ASCII|Koi8-r|win1251|Utf-8");
encodings->end();
}
fc->add_extra(encodings);
} else {
if (!version) {
version = new Fl_Check_Button(5,0,200,25,"Save binary 1.0 version");
}
fc->add_extra(version);
}
}
//
// 'close_callback()' - Close the main window...
//
void
close_callback(void)
{
exit(0);
}
//
// 'create_callback()' - Handle clicks on the create button.
//
void
create_callback(void)
{
fc->type(fc->type() ^ Fl_File_Chooser::CREATE);
}
//
// 'dir_callback()' - Handle clicks on the directory button.
//
void
dir_callback(void)
{
fc->type(fc->type() ^ Fl_File_Chooser::DIRECTORY);
}
//
// 'fc_callback()' - Handle choices in the file chooser...
//
void
fc_callback(Fl_File_Chooser *fc, // I - File chooser
void *data) // I - Data
{
const char *filename; // Current filename
printf("fc_callback(fc = %p, data = %p)\n", fc, data);
filename = fc->value();
printf(" filename = \"%s\"\n", filename ? filename : "(null)");
}
//
// 'multi_callback()' - Handle clicks on the multi button.
//
void
multi_callback(void)
{
fc->type(fc->type() ^ Fl_File_Chooser::MULTI);
}
//
// 'pdf_check()' - Check for and load the first page of a PDF file.
//
Fl_Image * // O - Page image or NULL
pdf_check(const char *name, // I - Name of file
uchar *header, // I - Header data
int) // I - Length of header data (unused)
{
const char *home; // Home directory
char preview[FL_PATH_MAX], // Preview filename
command[FL_PATH_MAX]; // Command
if (memcmp(header, "%PDF", 4) != 0)
return 0;
home = getenv("HOME");
sprintf(preview, "%s/.preview.ppm", home ? home : "");
sprintf(command,
"gs -r100 -dFIXED -sDEVICE=ppmraw -dQUIET -dNOPAUSE -dBATCH "
"-sstdout=\"%%stderr\" -sOUTPUTFILE=\'%s\' "
"-dFirstPage=1 -dLastPage=1 \'%s\' 2>/dev/null", preview, name);
if (system(command)) return 0;
return new Fl_PNM_Image(preview);
}
//
// 'ps_check()' - Check for and load the first page of a PostScript file.
//
Fl_Image * // O - Page image or NULL
ps_check(const char *name, // I - Name of file
uchar *header, // I - Header data
int) // I - Length of header data (unused)
{
const char *home; // Home directory
char preview[FL_PATH_MAX], // Preview filename
outname[FL_PATH_MAX], // Preview PS file
command[FL_PATH_MAX]; // Command
FILE *in, // Input file
*out; // Output file
int page; // Current page
char line[256]; // Line from file
if (memcmp(header, "%!", 2) != 0)
return 0;
home = getenv("HOME");
sprintf(preview, "%s/.preview.ppm", home ? home : "");
if (memcmp(header, "%!PS", 4) == 0) {
// PS file has DSC comments; extract the first page...
sprintf(outname, "%s/.preview.ps", home ? home : "");
if (strcmp(name, outname) != 0) {
in = fl_fopen(name, "rb");
out = fl_fopen(outname, "wb");
page = 0;
while (fgets(line, sizeof(line), in) != NULL) {
if (strncmp(line, "%%Page:", 7) == 0) {
page ++;
if (page > 1) break;
}
fputs(line, out);
}
fclose(in);
fclose(out);
}
} else {
// PS file doesn't have DSC comments; do the whole file...
strncpy(outname, name, sizeof(outname) - 1);
outname[sizeof(outname) - 1] = '\0';
}
sprintf(command,
"gs -r100 -dFIXED -sDEVICE=ppmraw -dQUIET -dNOPAUSE -dBATCH "
"-sstdout=\"%%stderr\" -sOUTPUTFILE=\'%s\' \'%s\' 2>/dev/null",
preview, outname);
if (system(command)) return 0;
return new Fl_PNM_Image(preview);
}
//
// 'show_callback()' - Show the file chooser...
//
void
show_callback(void)
{
int i; // Looping var
int count; // Number of files selected
char relative[FL_PATH_MAX]; // Relative filename
if (filter->value()[0])
fc->filter(filter->value());
fc->show();
while (fc->visible()) {
Fl::wait();
}
count = fc->count();
if (count > 0)
{
files->clear();
for (i = 1; i <= count; i ++)
{
if (!fc->value(i))
break;
fl_filename_relative(relative, sizeof(relative), fc->value(i));
files->add(relative,
Fl_File_Icon::find(fc->value(i), Fl_File_Icon::PLAIN));
}
files->redraw();
}
}
//
// End of "$Id$".
//