From 61c4624f6d95cd33602c662e7f272ee5d73120a7 Mon Sep 17 00:00:00 2001
From: Ali Gholami Rudi <ali@rudi.ir>
Date: Sat, 28 Feb 2009 21:46:55 +0330
Subject: [PATCH] txtwin: add page movements

---
 txtwin.c | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/txtwin.c b/txtwin.c
index 9a13eb7..d381d4d 100644
--- a/txtwin.c
+++ b/txtwin.c
@@ -18,12 +18,14 @@ static void on_window_destroy(GtkWidget *widget, gpointer data)
 	gtk_main_quit();
 }
 
-static void scroll(struct txtwin *tw, int count)
+static void scroll(struct txtwin *tw, int page, int count)
 {
 	int val = gtk_adjustment_get_value(tw->adjst);
 	int max = gtk_adjustment_get_upper(tw->adjst) -
 		  gtk_adjustment_get_page_size(tw->adjst);
-	val += count * gtk_adjustment_get_step_increment(tw->adjst);
+	int step = page ? gtk_adjustment_get_page_increment(tw->adjst) :
+			  gtk_adjustment_get_step_increment(tw->adjst);
+	val += count * step;
 	if (val > max)
 		val = max;
 	if (val < 0)
@@ -35,12 +37,26 @@ static gboolean on_key_press(GtkWidget *widget, GdkEventKey *event,
 			     gpointer data)
 {
 	struct txtwin *tw = data;
+	int mod = event->state & gtk_accelerator_get_default_mod_mask();
+	if (mod == GDK_CONTROL_MASK) {
+		switch(event->keyval) {
+		case GDK_f:
+			scroll(tw, 1, 1);
+			break;
+		case GDK_b:
+			scroll(tw, 1, -1);
+			break;
+		default:
+			break;
+		}
+		return 1;
+	}
 	switch(event->keyval) {
 	case GDK_j:
-		scroll(tw, 1);
+		scroll(tw, 0, 1);
 		break;
 	case GDK_k:
-		scroll(tw, -1);
+		scroll(tw, 0, -1);
 		break;
 	case GDK_q:
 		gtk_main_quit();
-- 
2.11.4.GIT