GTK+ Forums

vampirefrog · Joined: 12 Aug 2009 Posts: 3

Actually it's C++ but you can easily convert it to C.

It basically works by getting the clipboard contents every 250ms, and comparing it to the previous value. If it has changed, it tries to look for http:// links (you can add https and ftp too). The code might be bugged, it's just a quick working hack. I strongly suggest changing the url detection code. There might be better ways to implement it too. The idea was taken from d4x 2.5.7.2 code (see main/face/list.cc lines 1876, 1897, 1932, 2089).

Code: (Plaintext)

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#include <gtk/gtk.h>
#include <string.h>

void on_window_destroy(GtkObject * object, gpointer user_data) {
gtk_main_quit();
}

char *old_clipboard = NULL;
void selection_received(GtkWidget *window, GdkEvent *event) {
char *buf;
GdkAtom atom;
gint format, length;

length = gdk_selection_property_get(window->window, (guchar **)&buf, &atom, &format);
if(old_clipboard && !strcmp(old_clipboard, buf)) {
g_free(buf);
} else {
char *b = buf;
char *c;
while(b && (c = strstr(b, "http://"))) {
char *p = strpbrk(c, " \t\r\n");
char *url = p ? g_strndup(c, p - c) : g_strdup(c);
puts(url); // handle url
g_free(url);
b = c + 1;
}
old_clipboard = buf;
}
}

int clipboard_timeout(void *window) {
gtk_selection_convert(GTK_WIDGET(window), GDK_SELECTION_CLIPBOARD, GDK_TARGET_STRING, GDK_CURRENT_TIME);
}

int main(int argc, char *argv[]) {
GtkBuilder *builder;

GtkWidget *window;

gtk_init(&argc, &argv);

builder = gtk_builder_new();
gtk_builder_add_from_file(builder, "cm.ui", NULL);

window = GTK_WIDGET(gtk_builder_get_object(builder, "window1"));
gtk_builder_connect_signals(builder, NULL);
g_object_unref(G_OBJECT(builder));

gtk_widget_show(window);

// Monitor clipboard
g_signal_connect(G_OBJECT(window), "selection-received", G_CALLBACK(selection_received), NULL);
g_timeout_add(250, clipboard_timeout, window);

gtk_main();

return 0;
}

And here's the simple UI file for it, cm.ui. It's basically unused, except for the main window, window1:

Code: (XML/HTML)

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<?xml version="1.0"?>
<interface>
<requires lib="gtk+" version="2.16"/>

<object class="GtkWindow" id="window1">
<property name="border_width">4</property>
<signal name="delete_event" handler="gtk_main_quit"/>
<child>
<object class="GtkVBox" id="vbox1">
<property name="visible">True</property>
<property name="orientation">vertical</property>
<child>
<placeholder/>
</child>
<child>
<object class="GtkImage" id="image1">
<property name="visible">True</property>
<property name="stock">gtk-yes</property>
</object>
<packing>
<property name="position">1</property>
</packing>
</child>
<child>
<object class="GtkButton" id="button1">
<property name="label" translatable="yes">button</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
</object>
<packing>
<property name="position">2</property>
</packing>
</child>
</object>
</child>
</object>
</interface>