From b8435f54464fd50c145d321b118d773ea05ef6a2 Mon Sep 17 00:00:00 2001
From: Maurus Cuelenaere <mcuelenaere@gmail.com>
Date: Tue, 16 Jun 2009 17:04:47 +0000
Subject: Touchscreen targets: add calibration screen + rewrite calibration
 driver (FS#10295)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21312 a1c6a512-1295-4272-9138-f99709370657
---
 apps/settings_list.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

(limited to 'apps/settings_list.c')

diff --git a/apps/settings_list.c b/apps/settings_list.c
index 74e2cab3cd..dcad718ee5 100644
--- a/apps/settings_list.c
+++ b/apps/settings_list.c
@@ -53,6 +53,10 @@
 #include "iap.h"
 #endif
 #include "statusbar.h"
+#ifdef HAVE_TOUCHSCREEN
+#include "touchscreen.h"
+#include "ctype.h" /* For isspace() */
+#endif
 
 #define NVRAM(bytes) (bytes<<F_NVRAM_MASK_SHIFT)
 /** NOTE: NVRAM_CONFIG_VERSION is in settings_list.h
@@ -452,6 +456,48 @@ static void qs_set_default(void* setting, void* defaultval)
     find_setting(defaultval, (int*)setting);
 }
 #endif
+#ifdef HAVE_TOUCHSCREEN
+static void tsc_load_from_cfg(void* setting, char*value)
+{
+    struct touchscreen_parameter *var = (struct touchscreen_parameter*) setting;
+
+    /* Replacement for sscanf(value, "%d ..., &var->A, ...); */
+    int vals[7], count = 0;
+    while(*value != 0 && count < 7)
+    {
+        if(isspace(*value))
+            value++;
+        else
+        {
+            vals[count++] = atoi(value);
+            while(!isspace(*value))
+                value++;
+        }
+    }
+    var->A = vals[0];
+    var->B = vals[1];
+    var->C = vals[2];
+    var->D = vals[3];
+    var->E = vals[4];
+    var->F = vals[5];
+    var->divider = vals[6];
+}
+
+static char* tsc_write_to_cfg(void* setting, char*buf, int buf_len)
+{
+    const struct touchscreen_parameter *var = (const struct touchscreen_parameter*) setting;
+    snprintf(buf, buf_len, "%d %d %d %d %d %d %d", var->A, var->B, var->C, var->D, var->E, var->F, var->divider);
+    return buf;
+}
+static bool tsc_is_changed(void* setting, void* defaultval)
+{
+    return memcmp(setting, defaultval, sizeof(struct touchscreen_parameter)) != 0;
+}
+static void tsc_set_default(void* setting, void* defaultval)
+{
+    memcpy(setting, defaultval, sizeof(struct touchscreen_parameter));
+}
+#endif
 const struct settings_list settings[] = {
     /* sound settings */
     SOUND_SETTING(F_NO_WRAP,volume, LANG_VOLUME, "volume", SOUND_VOLUME),
@@ -1470,6 +1516,10 @@ const struct settings_list settings[] = {
     CHOICE_SETTING(0, touch_mode, LANG_TOUCHSCREEN_MODE, TOUCHSCREEN_BUTTON,
                    "touchscreen mode", "point,grid", NULL, 2,
                    ID2P(LANG_TOUCHSCREEN_POINT), ID2P(LANG_TOUCHSCREEN_GRID)),
+    CUSTOM_SETTING(0, ts_calibration_data, -1, 
+                    &default_calibration_parameters, "touchscreen calibration",
+                    tsc_load_from_cfg, tsc_write_to_cfg,
+                    tsc_is_changed, tsc_set_default),
 #endif
     OFFON_SETTING(0, prevent_skip, LANG_PREVENT_SKIPPING, false, "prevent track skip", NULL),
 };
-- 
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