From 8d22f47339df9018c86dce8f71918f9ab8f014cc Mon Sep 17 00:00:00 2001
From: tlatorre <tlatorre@uchicago.edu>
Date: Sat, 12 Nov 2022 13:50:22 -0600
Subject: factor out backspace code into a function

---
 vito.c | 49 +++++++++++++++++--------------------------------
 1 file changed, 17 insertions(+), 32 deletions(-)

diff --git a/vito.c b/vito.c
index 0e1bf20..de6e166 100644
--- a/vito.c
+++ b/vito.c
@@ -123,6 +123,21 @@ long released_time_sec = 0;
 /* Time the mouse was released (milliseconds) */
 long released_time_msec = 0;
 
+void backspace(void)
+{
+    GtkTextBuffer *text_buffer;
+    GtkTextIter start, end;
+
+    if (current_position > 0) {
+        text_buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(text_widget));
+        gtk_text_buffer_set_text(text_buffer, buf, -1);
+
+        gtk_text_buffer_get_iter_at_offset(text_buffer, &start, 0);
+        gtk_text_buffer_get_iter_at_offset(text_buffer, &end, g_utf8_strlen(buf,-1)-2);
+        current_position = strlen(gtk_text_buffer_get_slice(text_buffer,&start,&end,TRUE));
+    }
+}
+
 static int pressed(GtkWidget *widget, gpointer data)
 {
     aeGetTime(&pressed_time_sec,&pressed_time_msec);
@@ -146,8 +161,6 @@ static void write_buf(void)
 
 static int released(GtkWidget *widget, gpointer   data)
 {
-    GtkTextBuffer *text_buffer;
-    GtkTextIter start, end;
     const char *current_char;
 
     aeGetTime(&released_time_sec,&released_time_msec);
@@ -159,14 +172,7 @@ static int released(GtkWidget *widget, gpointer   data)
     } else if (diff > CLICK_TIME) {
         current_char = current_chars->characters[current_letter % current_chars->len];
         if (!strcmp(current_char,LEFT_ARROW)) {
-            if (current_position > 0) {
-                text_buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(text_widget));
-                gtk_text_buffer_set_text(text_buffer, buf, -1);
-
-                gtk_text_buffer_get_iter_at_offset(text_buffer, &start, 0);
-                gtk_text_buffer_get_iter_at_offset(text_buffer, &end, g_utf8_strlen(buf,-1)-2);
-                current_position = strlen(gtk_text_buffer_get_slice(text_buffer,&start,&end,TRUE));
-            }
+            backspace();
         } else if (!strcmp(current_char,CLEAR_SCREEN)) {
             current_position = 0;
             current_letter = 0;
@@ -209,12 +215,9 @@ static int released(GtkWidget *widget, gpointer   data)
 
 gboolean on_key_press(GtkEventControllerKey *, guint keyval, guint keycode, GdkModifierType mod, gpointer user_data)
 {
-    GtkTextBuffer *text_buffer;
-    GtkTextIter start, end;
     switch (keyval)
     {
     case GDK_KEY_space:
-        printf("switching alphabet");
         if (current_chars == &emoji)
             current_chars = &alphabet;
         else if (current_chars == &alphabet)
@@ -222,25 +225,7 @@ gboolean on_key_press(GtkEventControllerKey *, guint keyval, guint keycode, GdkM
         write_buf();
         break;
     case GDK_KEY_BackSpace:
-    case GDK_KEY_Delete:
-        if (current_position > 0) {
-            text_buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(text_widget));
-            gtk_text_buffer_set_text(text_buffer, buf, -1);
-
-            gtk_text_buffer_get_iter_at_offset(text_buffer, &start, 0);
-            gtk_text_buffer_get_iter_at_offset(text_buffer, &end, g_utf8_strlen(buf,-1)-2);
-            current_position = strlen(gtk_text_buffer_get_slice(text_buffer,&start,&end,TRUE));
-        }
-        if (current_position > LEN(buf) - 1) {
-            /* FIXME: better way to do this? */
-            current_position = 0;
-        }
-        /* Uncomment the next line to start over at the beginning of the
-         * alphabet after a new letter is entered. But, I think it's better
-         * to keep the current letter. The reason is that you might want to
-         * delete a whole word and so when you navigate to the backspace you
-         * just have to keep entering the same letter. */
-        current_letter = 0;
+        backspace();
         write_buf();
         break;
     default:
-- 
cgit