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From a671eb08a98dd8e4637567949af281ce4b7c5496 Mon Sep 17 00:00:00 2001
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From: Robert Roth <robert.roth.off@gmail.com>
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Date: Sun, 15 Mar 2015 20:39:25 +0200
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Subject: previewer: Enable/disable page navigation based on current page
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https://bugzilla.gnome.org/show_bug.cgi?id=745840
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---
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previewer/ev-previewer-window.c | 20 ++++++++++++++++++++
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1 file changed, 20 insertions(+)
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diff --git a/previewer/ev-previewer-window.c b/previewer/ev-previewer-window.c
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index dd34f25..ff2c42c 100644
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--- a/previewer/ev-previewer-window.c
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+++ b/previewer/ev-previewer-window.c
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@@ -334,6 +334,22 @@ view_focus_changed (GtkWidget *widget,
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}
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static void
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+model_page_changed (EvDocumentModel* model,
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+ gint old_page,
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+ gint new_page,
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+ EvPreviewerWindow *window)
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+{
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+ GtkAction *action;
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+ gint n_pages = ev_document_get_n_pages (ev_document_model_get_document (window->model));
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+
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+ action = gtk_action_group_get_action (window->action_group, "GoPreviousPage");
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+ gtk_action_set_sensitive (GTK_ACTION (action), new_page > 0 );
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+
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+ action = gtk_action_group_get_action (window->action_group, "GoNextPage");
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+ gtk_action_set_sensitive (GTK_ACTION (action), new_page < n_pages - 1);
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+}
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+
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+static void
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view_sizing_mode_changed (EvDocumentModel *model,
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GParamSpec *pspec,
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EvPreviewerWindow *window)
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@@ -599,6 +615,10 @@ ev_previewer_window_constructor (GType type,
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ev_view_set_model (window->view, window->model);
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ev_document_model_set_continuous (window->model, FALSE);
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+ g_signal_connect_object (window->model, "page-changed",
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+ G_CALLBACK (model_page_changed),
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+ window, 0);
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+
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gtk_container_add (GTK_CONTAINER (window->swindow), GTK_WIDGET (window->view));
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gtk_widget_show (GTK_WIDGET (window->view));
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--
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cgit v0.12
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