From afbdae6bf95ee6530b7772a05881520090c77d0b Mon Sep 17 00:00:00 2001
From: Sam Hocevar <sam@hocevar.net>
Date: Fri, 19 May 2006 18:34:23 +0000
Subject: [PATCH]   * Text input test program. Might be merged into libcaca if
 it works well.

---
 test/Makefile.am |   5 +-
 test/input.c     | 146 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 150 insertions(+), 1 deletion(-)
 create mode 100644 test/input.c

diff --git a/test/Makefile.am b/test/Makefile.am
index 60a0142..47a5388 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -2,7 +2,7 @@
 
 AM_CPPFLAGS = -I$(top_srcdir)/cucul -I$(top_srcdir)/caca -DDATADIR=\"$(pkgdatadir)\"
 
-noinst_PROGRAMS = colors demo dithering event export font frames gamma hsv spritedit font2tga text transform truecolor unicode import
+noinst_PROGRAMS = colors demo dithering event export font frames gamma hsv input spritedit font2tga text transform truecolor unicode import
 
 colors_SOURCES = colors.c
 colors_LDADD = ../caca/libcaca.la ../cucul/libcucul.la @CACA_LIBS@
@@ -34,6 +34,9 @@ gamma_LDADD = ../caca/libcaca.la ../cucul/libcucul.la @CACA_LIBS@ @MATH_LIBS@
 hsv_SOURCES = hsv.c
 hsv_LDADD = ../caca/libcaca.la ../cucul/libcucul.la @CACA_LIBS@
 
+input_SOURCES = input.c
+input_LDADD = ../caca/libcaca.la ../cucul/libcucul.la @CACA_LIBS@
+
 spritedit_SOURCES = spritedit.c
 spritedit_LDADD = ../caca/libcaca.la ../cucul/libcucul.la @CACA_LIBS@
 
diff --git a/test/input.c b/test/input.c
new file mode 100644
index 0000000..9be5158
--- /dev/null
+++ b/test/input.c
@@ -0,0 +1,146 @@
+/*
+ *  input         libcaca text input test program
+ *  Copyright (c) 2006 Sam Hocevar <sam@zoy.org>
+ *                All Rights Reserved
+ *
+ *  $Id$
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the Do What The Fuck You Want To
+ *  Public License, Version 2, as published by Sam Hocevar. See
+ *  http://sam.zoy.org/wtfpl/COPYING for more details.
+ */
+
+#include "config.h"
+#include "common.h"
+
+#if defined(HAVE_INTTYPES_H)
+#   include <inttypes.h>
+#endif
+
+#include <string.h>
+
+#include "cucul.h"
+#include "caca.h"
+
+#define BUFFER_SIZE 75
+#define TEXT_ENTRIES 5
+
+typedef struct textentry
+{
+    uint32_t buffer[BUFFER_SIZE + 1];
+    unsigned int size, cursor;
+} textentry;
+
+int main(void)
+{
+    textentry entries[TEXT_ENTRIES];
+    cucul_canvas_t *cv;
+    caca_display_t *dp;
+    unsigned int i, e = 0, running = 1;
+
+    cv = cucul_create_canvas(0, 0);
+    dp = caca_create_display(cv);
+
+    cucul_set_color(cv, CUCUL_COLOR_WHITE, CUCUL_COLOR_BLUE);
+    cucul_putstr(cv, 1, 1, "Text entries - press tab to cycle");
+
+    for(i = 0; i < TEXT_ENTRIES; i++)
+    {
+        entries[i].buffer[0] = 0;
+        entries[i].size = 0;
+        entries[i].cursor = 0;
+    }
+
+    while(running)
+    {
+        caca_event_t ev;
+
+        for(i = 0; i < TEXT_ENTRIES; i++)
+        {
+            unsigned int j, start, size;
+
+            cucul_set_color(cv, CUCUL_COLOR_BLACK, CUCUL_COLOR_LIGHTGRAY);
+            cucul_fill_box(cv, 2, 3 * i + 4, 2 + BUFFER_SIZE, 3 * i + 4, " ");
+
+            start = 0;
+            size = entries[i].size;
+
+            for(j = 0; j < size; j++)
+            {
+                cucul_putchar(cv, 2 + j, 3 * i + 4,
+                              entries[i].buffer[start + j]);
+            }
+        }
+
+        /* Put the cursor on the active textentry */
+        cucul_set_color(cv, CUCUL_COLOR_WHITE, CUCUL_COLOR_WHITE);
+        cucul_putchar(cv, 2 + entries[e].cursor, 3 * e + 4, ' ');
+
+        caca_refresh_display(dp);
+
+        if(caca_get_event(dp, CACA_EVENT_KEY_PRESS, &ev, -1) == 0)
+            continue;
+
+        switch(ev.data.key.ch)
+        {
+            case CACA_KEY_ESCAPE:
+                running = 0;
+                break;
+            case CACA_KEY_TAB:
+            case CACA_KEY_RETURN:
+                e = (e + 1) % TEXT_ENTRIES;
+                break;
+            case CACA_KEY_HOME:
+                entries[e].cursor = 0;
+                break;
+            case CACA_KEY_END:
+                entries[e].cursor = entries[e].size;
+                break;
+            case CACA_KEY_LEFT:
+                if(entries[e].cursor)
+                    entries[e].cursor--;
+                break;
+            case CACA_KEY_RIGHT:
+                if(entries[e].cursor < entries[e].size)
+                    entries[e].cursor++;
+                break;
+            case CACA_KEY_DELETE:
+                if(entries[e].cursor < entries[e].size)
+                {
+                    memmove(entries[e].buffer + entries[e].cursor,
+                            entries[e].buffer + entries[e].cursor + 1,
+                            (entries[e].size - entries[e].cursor + 1) * 4);
+                    entries[e].size--;
+                }
+                break;
+            case CACA_KEY_BACKSPACE:
+                if(entries[e].cursor)
+                {
+                    memmove(entries[e].buffer + entries[e].cursor - 1,
+                            entries[e].buffer + entries[e].cursor,
+                            (entries[e].size - entries[e].cursor) * 4);
+                    entries[e].size--;
+                    entries[e].cursor--;
+                }
+                break;
+            default:
+                if(entries[e].size < BUFFER_SIZE)
+                {
+                    memmove(entries[e].buffer + entries[e].cursor + 1,
+                            entries[e].buffer + entries[e].cursor,
+                            (entries[e].size - entries[e].cursor) * 4);
+                    entries[e].buffer[entries[e].cursor] = ev.data.key.ucs4;
+                    entries[e].size++;
+                    entries[e].cursor++;
+                }
+                break;
+        }
+    }
+
+    caca_free_display(dp);
+    cucul_free_canvas(cv);
+
+    return 0;
+}
+