Attachment 2740 Details for Bug 1738 – Repro: A GTK+ app with a slow text field

Repro: A GTK+ app with a slow text field

typing.c (text/plain), 2.68 KB, created by Johan Walles on 2005-05-22 04:22:43 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Johan Walles

Created: 2005-05-22 04:22:43 UTC

Size: 2.68 KB

patch

obsolete

>/* Build with: gcc `pkg-config --cflags --libs gtk+-2.0` typing.c */
>
>/*
> * The point of this program is to illustrate
> *   https://bugs.freedesktop.org/show_bug.cgi?id=1738.
> *
> * It's a GTK+ app that has a window with two text fields labeled
> * "slow" and "normal".  The normal one is a normal text field (what
> * else?).  The slow one sleeps for 0,5s after each key press.
> *
> * If you press and hold "u" (for example), the slow box will keep
> * printing "u"s for long after you release the button.  Bad.
> */
>
>#include <unistd.h>
>#include <gtk/gtk.h>
>#include <gdk/gdk.h>
>
>#define DELAY_MS 500
>
>/*
> * Terminate the main loop.
> */
>static void
>on_destroy (GtkWidget * widget, gpointer data) {
>  (void)widget;
>  (void)data;
>  gtk_main_quit ();
>}
>
>/*
> * Slow down the slow text box.
> */
>void delay(GtkEditable *editable, gpointer user_data) {
>  (void)editable;
>  (void)user_data;
>  GdkWindow *updateMe;
>  GdkRegion *bounds;
>  
>  usleep(DELAY_MS * 1000);
>  
>  // Repaint the widget
>  updateMe = gtk_widget_get_parent_window(GTK_WIDGET(editable));
>  bounds = gdk_drawable_get_visible_region(updateMe);
>  gdk_window_invalidate_region(updateMe, bounds, TRUE);
>  gdk_region_destroy(bounds);
>  gdk_window_process_updates(updateMe, TRUE);
>}
>
>int
>main (int argc, char *argv[])
>{
>  GtkWidget *window;
>  GtkWidget *table;
>  GtkWidget *slowEntry;
>  
>  gtk_init (&argc, &argv);
>
>  /* create the main, top level, window */
>  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
>
>  /* give it the title */
>  gtk_window_set_title (GTK_WINDOW (window), "Typing test");
>
>  /* open it a bit wider so that both the label and title show up */
>  gtk_window_set_default_size (GTK_WINDOW (window), 200, 50);
>
>  /* Connect the destroy event of the window with our on_destroy function
>   * When the window is about to be destroyed we get a notificaiton and
>   * stop the main GTK loop
>   */
>  g_signal_connect (G_OBJECT (window), "destroy",
>		    G_CALLBACK (on_destroy), NULL);
>
>  /* Create the table used for layout */
>  table = gtk_table_new(2, 2, FALSE);
>  gtk_table_attach_defaults(GTK_TABLE(table),
>			    GTK_WIDGET(gtk_label_new("Slow:")), 0, 1, 0, 1);
>  slowEntry = gtk_entry_new();
>  g_signal_connect(G_OBJECT(slowEntry), "changed",
>		   G_CALLBACK(delay), NULL);
>  gtk_table_attach_defaults(GTK_TABLE(table),
>			    slowEntry, 1, 2, 0, 1);
>  gtk_table_attach_defaults(GTK_TABLE(table),
>			    GTK_WIDGET(gtk_label_new("Normal:")), 0, 1, 1, 2);
>  gtk_table_attach_defaults(GTK_TABLE(table),
>			    GTK_WIDGET(gtk_entry_new()), 1, 2, 1, 2);
>  gtk_container_add (GTK_CONTAINER (window), GTK_WIDGET(table));
>  
>  /* make sure that everything, window and label, are visible */
>  gtk_widget_show_all (window);
>
>  /* start the main loop */
>  gtk_main ();
>
>  return 0;
>}

Actions: View

Attachments on bug 1738: 2740

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.