added gwin enabled parameter and implemented button enable/disable functions

2 files changed, 33 insertions, 1 deletions

diff --git a/include/gwin/button.h b/include/gwin/button.h
index b96cb83e..bcf9be04 100644
--- a/include/gwin/button.h
+++ b/include/gwin/button.h
@@ -63,7 +63,7 @@ typedef enum GButtonState_e {
 	GBTN_UP, GBTN_DOWN
 } GButtonState;
 
-typedef void (*GButtonDrawFunction)(GHandle gh, bool_t isdown, const char *txt, const GButtonDrawStyle *pstyle, void *param);
+typedef void (*GButtonDrawFunction)(GHandle gh, bool_t enabled, bool_t isdown, const char *txt, const GButtonDrawStyle *pstyle, void *param);
 
 // A button window
 typedef struct GButtonObject_t {
@@ -146,6 +146,16 @@ void gwinSetButtonText(GHandle gh, const char *txt, bool_t useAlloc);
 void gwinButtonDraw(GHandle gh);
 
 /**
+ * @brief	Enable or disable a button
+ *
+ * @param[in] gh		The window handle (must be a button window)
+ * @param[in] enabled	Enable or disable the button
+ *
+ * @api
+ */
+void gwinButtonSetEnabled(GHandle gh, bool_t enabled);
+
+/**
  * @brief   Set the callback routine to perform a custom button drawing.
  *
  * @param[in] gh		The window handle (must be a button window)
@@ -156,6 +166,27 @@ void gwinButtonDraw(GHandle gh);
  */
 void gwinSetButtonCustom(GHandle gh, GButtonDrawFunction fn, void *param);
 
+/**
+ * @brief Enable a button
+ *
+ * @api
+ */
+#define gwinEnableButton(gh)		gwinButtonSetEnabled( ((GButtonObject *)(gh)), TRUE)
+
+/**
+ * @brief Disable a button
+ *
+ * @api
+ */
+#define gwinDisableButton(gh)		gwinButtonSetEnabled( ((GButtonObject *)(gh)), FALSE)
+
+/**
+ * @brief Get the state of a button
+ *
+ * @param[in] gh	The window handle (must be a button window)
+ *
+ * @api
+ */
 #define gwinGetButtonState(gh)		(((GButtonObject *)(gh))->state)
 
 /**
diff --git a/include/gwin/gwin.h b/include/gwin/gwin.h
index 43095643..c7b20008 100644
--- a/include/gwin/gwin.h
+++ b/include/gwin/gwin.h
@@ -45,6 +45,7 @@ typedef struct GWindowObject_t {
 	coord_t		x, y;				// Screen relative position
 	coord_t		width, height;		// Dimensions of this window
 	color_t		color, bgcolor;		// Current drawing colors
+	bool_t		enabled;			// Enabled/Disabled state
 #if GDISP_NEED_TEXT
 	font_t		font;				// Current font
 #endif