Move gtk+ example to doc/examples

1 files changed, 78 insertions, 0 deletions

diff --git a/doc/examples/gtk/gtk_ui.cpp b/doc/examples/gtk/gtk_ui.cpp
new file mode 100644
index 000000000..515fbc519
--- /dev/null
+++ b/doc/examples/gtk/gtk_ui.cpp
@@ -0,0 +1,78 @@
+/*************************************************
+* GTK+ User Interface Source File                *
+*************************************************/
+
+#include "gtk_ui.h"
+
+/*************************************************
+* GTK+ Callback                                  *
+*************************************************/
+void GTK_UI::callback(GtkWidget* entry, gpointer passphrase_ptr)
+   {
+   const gchar *entry_text = gtk_entry_get_text(GTK_ENTRY(entry));
+   char* passphrase = (char*)passphrase_ptr;
+   strcpy(passphrase, entry_text);
+   }
+
+/*************************************************
+* Get a passphrase from the user                 *
+*************************************************/
+std::string GTK_UI::get_passphrase(const std::string& what,
+                                   const std::string& source,
+                                   UI_Result& result) const
+   {
+   std::string msg = "A passphrase is needed to access the " + what;
+   if(source != "") msg += "\nin " + source;
+   return get_passphrase(msg, result);
+   }
+
+/*************************************************
+* Get a passphrase from the user                 *
+*************************************************/
+std::string GTK_UI::get_passphrase(const std::string& label_text,
+                                   UI_Result& result) const
+   {
+   const int MAX_PASSPHRASE = 64;
+
+   GtkDialogFlags flags =
+      (GtkDialogFlags)(GTK_DIALOG_DESTROY_WITH_PARENT | GTK_DIALOG_MODAL);
+
+   GtkWidget* dialog = gtk_dialog_new_with_buttons(
+      "Enter Passphrase",
+      NULL, flags,
+      GTK_STOCK_OK, GTK_RESPONSE_OK,
+      GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
+      NULL);
+
+   gtk_dialog_set_default_response(GTK_DIALOG(dialog), GTK_RESPONSE_OK);
+
+   GtkWidget* label = gtk_label_new(label_text.c_str());
+
+   GtkWidget* entry = gtk_entry_new();
+   gtk_entry_set_visibility(GTK_ENTRY(entry), 0);
+   gtk_entry_set_activates_default(GTK_ENTRY(entry), TRUE);
+   gtk_entry_set_max_length(GTK_ENTRY(entry), MAX_PASSPHRASE);
+
+   char passphrase_buf[MAX_PASSPHRASE + 1] = { 0 };
+
+   gtk_signal_connect(GTK_OBJECT(entry), "activate",
+                      GTK_SIGNAL_FUNC(callback), passphrase_buf);
+
+   GtkWidget* vbox = gtk_vbox_new(FALSE, 0);
+   gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, FALSE, 0);
+   gtk_box_pack_start(GTK_BOX(vbox), entry, FALSE, FALSE, 0);
+
+   gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), vbox, TRUE, TRUE, 0);
+   gtk_widget_show_all(vbox);
+
+   /* Block until we get something back */
+   result = CANCEL_ACTION;
+   if(gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_OK)
+      result = OK;
+
+   gtk_widget_destroy(dialog);
+
+   if(result == OK)
+      return std::string(passphrase_buf);
+   return "";
+   }