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// dragon - very lightweight DnD file source/target
// Copyright 2014 Michael Homer.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#define _POSIX_C_SOURCE 200809L
#define _XOPEN_SOURCE 500
#include <gtk/gtk.h>
#include <gdk/gdk.h>
#include <gdk/gdkkeysyms.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#define VERSION "0.3.0"
GtkWidget *window;
GtkWidget *vbox;
char *progname;
bool verbose = false;
int mode = 0;
#define MODE_HELP 1
#define MODE_LIST_CONFIGS 2
#define MODE_BACKENDS 3
#define MODE_VERSION 4
#define TARGET_TYPE_TEXT 1
#define TARGET_TYPE_URI 2
struct draggable_thing {
char *text;
char *uri;
guint last_time;
};
void do_quit(GtkWidget *widget, gpointer data) {
exit(0);
}
void button_clicked(GtkWidget *widget, gpointer user_data) {
struct draggable_thing *dd = (struct draggable_thing *)user_data;
if (0 == fork()) {
execlp("xdg-open", "xdg-open", dd->uri, NULL);
}
}
void drag_data_get(GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *data,
guint info,
guint time,
gpointer user_data) {
struct draggable_thing *dd = (struct draggable_thing *)user_data;
if (info == TARGET_TYPE_URI) {
if (verbose)
printf("Writing as URI: %s\n", dd->uri);
char *uris[] = {dd->uri, NULL};
gtk_selection_data_set_uris(data, uris);
g_signal_stop_emission_by_name(widget, "drag-data-get");
} else if (info == TARGET_TYPE_TEXT) {
if (verbose)
printf("Writing as TEXT: %s\n", dd->text);
gtk_selection_data_set_text(data, dd->text, -1);
} else {
fprintf(stderr, "Error: bad target type %i\n", info);
}
}
void add_button(char *label, struct draggable_thing *dragdata, int type) {
GtkWidget *button = gtk_button_new();
gtk_button_set_label(GTK_BUTTON(button), label);
GtkTargetList *targetlist = gtk_drag_source_get_target_list(GTK_WIDGET(button));
if (targetlist)
gtk_target_list_ref(targetlist);
else
targetlist = gtk_target_list_new(NULL, 0);
if (type == TARGET_TYPE_URI)
gtk_target_list_add_uri_targets(targetlist, TARGET_TYPE_URI);
else
gtk_target_list_add_text_targets(targetlist, TARGET_TYPE_TEXT);
gtk_drag_source_set(GTK_WIDGET(button), GDK_BUTTON1_MASK, NULL, 0,
GDK_ACTION_DEFAULT | GDK_ACTION_LINK | GDK_ACTION_COPY);
gtk_drag_source_set_target_list(GTK_WIDGET(button), targetlist);
g_signal_connect(GTK_WIDGET(button), "drag-data-get",
G_CALLBACK(drag_data_get), dragdata);
g_signal_connect(GTK_WIDGET(button), "clicked",
G_CALLBACK(button_clicked), dragdata);
gtk_container_add(GTK_CONTAINER(vbox), button);
}
void add_file_button(char *ufilename, char *filename) {
char *uri = malloc(strlen(filename) + 8); // file:// + NULL
strcpy(uri, "file://");
strcat(uri, filename);
struct draggable_thing *dragdata = malloc(sizeof(struct draggable_thing));
dragdata->text = filename;
dragdata->uri = uri;
add_button(ufilename, dragdata, TARGET_TYPE_URI);
}
void add_uri_button(char *uri) {
struct draggable_thing *dragdata = malloc(sizeof(struct draggable_thing));
dragdata->text = uri;
dragdata->uri = uri;
add_button(uri, dragdata, TARGET_TYPE_URI);
}
bool is_uri(char *uri) {
for (int i=0; uri[i]; i++)
if (uri[i] == '/')
return false;
else if (uri[i] == ':')
return true;
return false;
}
int main (int argc, char **argv) {
progname = argv[0];
char *filename = NULL;
char *ufilename = NULL;
for (int i=1; i<argc; i++) {
if (strcmp(argv[i], "--help") == 0) {
mode = MODE_HELP;
} else if (strcmp(argv[i], "--version") == 0) {
mode = MODE_VERSION;
} else if (strcmp(argv[i], "-v") == 0
|| strcmp(argv[i], "--verbose") == 0) {
verbose = true;
} else if (argv[i][0] == '-') {
fprintf(stderr, "%s: error: unknown option `%s'.\n",
progname, argv[i]);
}
}
switch(mode) {
case MODE_VERSION:
puts("dragon " VERSION);
puts("Copyright (C) 2014 Michael Homer");
puts("This program comes with ABSOLUTELY NO WARRANTY.");
puts("See the source for copying conditions.");
exit(0);
case MODE_HELP:
printf("dragon - lightweight DnD source/target\n");
printf("Usage: %s [OPTION] [FILENAME]\n", argv[0]);
printf(" --verbose, -v be verbose\n");
printf(" --help show help\n");
printf(" --version show version details\n");
exit(0);
}
GtkAccelGroup *accelgroup;
GClosure *closure;
gtk_init(&argc, &argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
closure = g_cclosure_new(G_CALLBACK(do_quit), NULL, NULL);
accelgroup = gtk_accel_group_new();
gtk_accel_group_connect(accelgroup, GDK_KEY_Escape, 0, 0, closure);
gtk_window_add_accel_group(GTK_WINDOW(window), accelgroup);
gtk_window_set_title(GTK_WINDOW(window), "Run");
gtk_window_set_resizable(GTK_WINDOW(window), FALSE);
g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 6);
bool had_filename = false;
for (int i=1; i<argc; i++) {
if (argv[i][0] != '-') {
filename = ufilename = argv[i];
if (!is_uri(filename)) {
filename = realpath(filename, NULL);
if (!filename) {
fprintf(stderr, "The file `%s' does not exist.\n",
ufilename);
exit(1);
}
add_file_button(ufilename, filename);
} else {
add_uri_button(filename);
}
had_filename = true;
}
}
if (!had_filename) {
printf("Usage: %s [OPTIONS] FILENAME\n", progname);
exit(0);
}
gtk_container_add(GTK_CONTAINER(window), vbox);
gtk_window_set_title(GTK_WINDOW(window), "dragon");
gtk_widget_show_all(window);
gtk_main();
return 0;
}
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