e7eb55d954
* Modified demos/gtk-demo to test multihead support * added 4 test to gtk-demo (screen, display, virtual screen (xinerama) and "move window").
119 lines
3.0 KiB
C
119 lines
3.0 KiB
C
/* Multihead Support/Multiple Screen demo
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*
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* Demonstrates an application displaying a window per screen
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*
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*/
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#include <gtk/gtk.h>
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#include <stdio.h>
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#include "demo-common.h"
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void
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multiscreen_close_all (GtkWidget * widget)
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{
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GdkDisplay *display = gtk_widget_get_display (widget);
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GtkWidget **window = g_object_get_data (G_OBJECT (display),
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"do_multiscreen");
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if (window)
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{
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gint j = gdk_display_get_n_screens (display);
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j--;
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g_object_set_data (G_OBJECT (display), "do_multiscreen", NULL);
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while (j >= 0)
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{
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if (window[j])
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{
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gtk_widget_destroy (window[j]);
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window[j] = NULL;
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}
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j--;
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}
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if (window)
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g_free (window);
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}
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}
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GtkWidget *
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do_multiscreen (GtkWidget * do_widget)
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{
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gint i, num_screen;
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GdkDisplay *dpy = gtk_widget_get_display (do_widget);
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GtkWidget *vbox, *label, *button;
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GtkWidget **window = g_object_get_data (G_OBJECT (dpy), "do_multiscreen");
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if (!window)
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{
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num_screen = gdk_display_get_n_screens (dpy);
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if (num_screen <= 1)
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{
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GtkWidget *dialog;
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GtkWidget *w = gtk_widget_get_toplevel (do_widget);
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dialog = gtk_message_dialog_new (GTK_WINDOW (w),
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GTK_DIALOG_MODAL,
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GTK_MESSAGE_ERROR,
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GTK_BUTTONS_CLOSE,
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"This display (%s) manages only one screen.",
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gdk_display_get_name (dpy));
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g_signal_connect (dialog, "response",
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G_CALLBACK (gtk_widget_destroy), NULL);
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gtk_widget_show (dialog);
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return dialog;
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}
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window = g_new (GtkWidget *, num_screen);
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g_object_set_data (G_OBJECT (dpy), "do_multiscreen", window);
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for (i = 0; i < num_screen; i++)
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{
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char *label_text = g_new (char, 300);
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GdkScreen *screen = gdk_display_get_screen (dpy, i);
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window[i] = gtk_widget_new (gtk_window_get_type (), "screen",
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screen,
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"user_data", NULL, "type",
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GTK_WINDOW_TOPLEVEL, "title", label,
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"allow_grow", FALSE, "allow_shrink",
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FALSE, "border_width", 10, NULL);
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/* you can also use gtk_window_new and set the screen afterwards with
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* gtk_window_set_screen */
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g_signal_connect (G_OBJECT (window[i]), "destroy",
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G_CALLBACK (multiscreen_close_all), NULL);
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vbox = gtk_vbox_new (TRUE, 0);
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gtk_container_add (GTK_CONTAINER (window[i]), vbox);
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label = gtk_label_new (NULL);
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sprintf (label_text,
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" <big><span foreground=\"white\" background=\"black\">"
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"Screen %d of %d</span></big>\n"
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"<span background=\"darkcyan\"><i>Width - Height : (%d,%d)\n</i></span>",
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i + 1, num_screen, gdk_screen_get_width (screen),
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gdk_screen_get_height (screen));
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gtk_label_set_markup (GTK_LABEL (label), label_text);
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gtk_container_add (GTK_CONTAINER (vbox), label);
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button = gtk_button_new_with_label ("Close");
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g_signal_connect (G_OBJECT (button), "clicked",
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G_CALLBACK (multiscreen_close_all), NULL);
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gtk_container_add (GTK_CONTAINER (vbox), button);
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gtk_widget_show_all (window[i]);
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}
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return window[0];
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}
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else
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{
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multiscreen_close_all (do_widget);
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return NULL;
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}
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}
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