Added button to restore default controls.

data/widgets/controls.json

@@ -103,9 +103,19 @@
 		"group" : "controls",
 		"type" : "WT_BUTTON",
 		"text" : "OK",
-		"x" : -1,
+		"x" : 500,
 		"y" : 650,
-		"w" : 100,
+		"w" : 200,
+		"h": 34
+	},
+	{
+		"name" : "restore",
+		"group" : "controls",
+		"type" : "WT_BUTTON",
+		"text" : "Restore Defaults",
+		"x" : 780,
+		"y" : 650,
+		"w" : 200,
 		"h": 34
 	}
 ]

src/system/controls.c

@@ -20,6 +20,8 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 #include "controls.h"
 
+static void restoreDefaults(void);
+
 static const char *controlName[CONTROL_MAX];
 static Widget *controlWidget[CONTROL_MAX];
 
@@ -70,6 +72,8 @@ void initControlsDisplay(void)
 			sprintf(controlWidget[i]->options[1], "Btn %d", app.mouseControls[i]);
 		}
 	}
+	
+	getWidget("restore", "controls")->action = restoreDefaults;
 }
 
 int isControl(int type)
@@ -185,3 +189,43 @@ void drawControls(void)
 	
 	drawWidgets("controls");
 }
+
+static void restoreDefaults(void)
+{
+	int i;
+	cJSON *root, *controlsJSON, *node;
+	char *text;
+
+	text = readFile("data/app/"CONFIG_FILENAME);
+
+	root = cJSON_Parse(text);
+
+	controlsJSON = cJSON_GetObjectItem(root, "controls");
+	if (controlsJSON)
+	{
+		node = cJSON_GetObjectItem(controlsJSON, "keys")->child;
+		while (node)
+		{
+			i = lookup(node->string);
+
+			app.keyControls[i] = node->valueint;
+
+			node = node->next;
+		}
+
+		node = cJSON_GetObjectItem(controlsJSON, "mouse")->child;
+		while (node)
+		{
+			i = lookup(node->string);
+
+			app.mouseControls[i] = node->valueint;
+
+			node = node->next;
+		}
+	}
+
+	cJSON_Delete(root);
+	free(text);
+	
+	initControlsDisplay();
+}

src/system/controls.h

@@ -19,6 +19,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
 
 #include "../common.h"
+#include "../json/cJSON.h"
 
 extern void drawText(int x, int y, int size, int align, SDL_Color c, const char *format, ...);
 extern char *getTranslatedString(char *string);
@@ -27,6 +28,7 @@ extern void drawWidgets(char *groupName);
 extern char *getLookupName(char *prefix, long num);
 extern long lookup(char *name);
 extern void limitTextWidth(int width);
+extern char *readFile(char *filename);
 
 extern App app;
 extern Colors colors;