[eog] EogWindow: Add tooltip to zoom button

[Felix Riemann <friemann src gnome org>]

commit 0522b176ef0b2cd1b27d64378aae4fd0ecf34fa2
Author: Felix Riemann <friemann gnome org>
Date:   Wed Feb 4 21:38:30 2015 +0100

    EogWindow: Add tooltip to zoom button
    
    https://bugzilla.gnome.org/show_bug.cgi?id=743887

 src/eog-window.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/src/eog-window.c b/src/eog-window.c
index 12293c7..a18e48a 100644
--- a/src/eog-window.c
+++ b/src/eog-window.c
@@ -4152,11 +4152,15 @@ eog_window_zoom_button_toggled_cb (GtkToggleButton *button, gpointer user_data)
        if (toggled) {
                zoom_image = gtk_image_new_from_icon_name ("zoom-out-symbolic",
                                                           GTK_ICON_SIZE_BUTTON);
+               gtk_widget_set_tooltip_text (GTK_WIDGET (button),
+                                            _("Fit the image to the window"));
        } else {
                zoom_image = gtk_image_new_from_icon_name ("zoom-in-symbolic",
                                                           GTK_ICON_SIZE_BUTTON);
                eog_scroll_view_set_zoom_mode (EOG_SCROLL_VIEW (priv->view),
                                               EOG_ZOOM_MODE_SHRINK_TO_FIT);
+               gtk_widget_set_tooltip_text (GTK_WIDGET (button),
+                                            _("Shrink or enlarge the current image"));
        }
 
        gtk_revealer_set_reveal_child (GTK_REVEALER (priv->zoom_revealer), toggled);
@@ -4201,6 +4205,8 @@ eog_window_construct_ui (EogWindow *window)
        zoom_image = gtk_image_new_from_icon_name ("zoom-in-symbolic",
                                                   GTK_ICON_SIZE_BUTTON);
        gtk_button_set_image (GTK_BUTTON (zoom_button), zoom_image);
+       gtk_widget_set_tooltip_text (zoom_button,
+                                    _("Shrink or enlarge the current image"));
        g_signal_connect (zoom_button, "toggled",
                          G_CALLBACK (eog_window_zoom_button_toggled_cb),
                          window);