fltk/test/file_chooser.cxx
Michael R Sweet 861ad9769b New file chooser.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@2286 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2002-06-07 15:06:32 +00:00

295 lines
7.0 KiB
C++

//
// "$Id: file_chooser.cxx,v 1.4.2.3.2.5 2002/06/07 15:06:32 easysw Exp $"
//
// File chooser test program.
//
// Copyright 1999-2002 by Michael Sweet.
//
// 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 to "fltk-bugs@fltk.org".
//
// 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...
//
//
// 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 "../src/flstring.h"
//
// Globals...
//
Fl_Input *filter;
Fl_File_Browser *files;
Fl_File_Chooser *fc;
Fl_Shared_Image *image = 0;
//
// Functions...
//
void close_callback(void);
void fc_callback(Fl_File_Chooser *, void *);
Fl_Image *pdf_check(const char *, uchar *, int);
Fl_Image *ps_check(const char *, uchar *, int);
void show_callback(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_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::MULTI, "Fl_File_Chooser Test");
fc->callback(fc_callback);
// fc->type(Fl_File_Chooser::MULTI);
// fc->color((Fl_Color)196);
// 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_Window(400, 200, "File Chooser Test");
filter = new Fl_Input(50, 10, 315, 25, "Filter:");
if (argc > 1)
filter->value(argv[1]);
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);
files = new Fl_File_Browser(50, 45, 340, 110, "Files:");
files->align(FL_ALIGN_LEFT);
button = new Fl_Button(340, 165, 50, 25, "Close");
button->callback((Fl_Callback *)close_callback);
window->end();
window->show();
Fl::run();
return (0);
}
//
// 'close_callback()' - Close the main window...
//
void
close_callback(void)
{
exit(0);
}
//
// '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)");
}
//
// '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 headerlen) // I - Length of header data
{
const char *home; // Home directory
char preview[1024], // Preview filename
command[1024]; // Command
if (memcmp(header, "%PDF", 4) != 0)
return 0;
home = getenv("HOME");
snprintf(preview, sizeof(preview), "%s/.preview.ppm", home ? home : "");
snprintf(command, sizeof(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 headerlen) // I - Length of header data
{
const char *home; // Home directory
char preview[1024], // Preview filename
outname[1024], // Preview PS file
command[1024]; // 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");
snprintf(preview, sizeof(preview), "%s/.preview.ppm", home ? home : "");
if (memcmp(header, "%!PS", 4) == 0) {
// PS file has DSC comments; extract the first page...
snprintf(outname, sizeof(outname), "%s/.preview.ps", home ? home : "");
if (strcmp(name, outname) != 0) {
in = fopen(name, "rb");
out = 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...
strlcpy(outname, name, sizeof(outname));
}
snprintf(command, sizeof(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[1024]; // Relative filename
fc->show();
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 ++)
{
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: file_chooser.cxx,v 1.4.2.3.2.5 2002/06/07 15:06:32 easysw Exp $".
//