From 3a08f65cfcd884b454e835e6319d949e51e0b428 Mon Sep 17 00:00:00 2001
From: Joel Bodenmann <joel@unormal.org>
Date: Sat, 18 Jan 2014 20:28:28 +0100
Subject: [PATCH] initial work on GGroup

---
 include/gwin/ggroup.h | 46 +++++++++++++++++++++++++++++++++++++++++++
 include/gwin/gwin.h   |  9 +++++++--
 src/gwin/ggroup.c     | 26 ++++++++++++++++++++++++
 3 files changed, 79 insertions(+), 2 deletions(-)
 create mode 100644 include/gwin/ggroup.h
 create mode 100644 src/gwin/ggroup.c

diff --git a/include/gwin/ggroup.h b/include/gwin/ggroup.h
new file mode 100644
index 00000000..b58f415b
--- /dev/null
+++ b/include/gwin/ggroup.h
@@ -0,0 +1,46 @@
+/*
+ * This file is subject to the terms of the GFX License. If a copy of
+ * the license was not distributed with this file, you can obtain one at:
+ *
+ *              http://ugfx.org/license.html
+ */
+
+/**
+ * @file    include/gwin/ggroup.h
+ * @brief   GWIN Widgets header file.
+ */
+
+#ifndef _GGROUP_H
+#define _GGROUP_H
+
+/* This file is included within "gwin/gwin.h" */
+
+/**
+ * @defgroup Widget Widget
+ * @ingroup GWIN
+ *
+ * @details		Groups provide parent/child relation features and dynamic layouts.
+ *
+ * @pre			GFX_NEED_GWIN needs to be set to TRUE in your gfxconf.h.
+ * @pre			GWIN_NEED_GROUPS needs to be set to TRUE in your gfxconf.h.
+ *
+ * @{
+ */
+
+/**
+ * @brief	A group object structure
+ * @note	Do not access the members directly. Treat it as a black-box and use the method functions.
+ * @{
+ */
+typedef struct GGroupObject {
+	GWindowObject		g;
+
+	GHandle				parent;				// @< The parent widget
+	GHandle				sibling;			// @< The widget to its left (add right later as well)
+	GHandle				child;				// @< The child widget
+} GGroupObject;
+/** @} */
+
+
+#endif /* _GGROUP_H */
+
diff --git a/include/gwin/gwin.h b/include/gwin/gwin.h
index e74927ae..8e570229 100644
--- a/include/gwin/gwin.h
+++ b/include/gwin/gwin.h
@@ -55,7 +55,7 @@ typedef struct GWindowObject {
 		GHandle				child;				// @< The child widget
 	#endif
 } GWindowObject, * GHandle;
-/* @} */
+/** @} */
 
 /**
  * @brief	The structure to initialise a GWIN.
@@ -70,7 +70,7 @@ typedef struct GWindowInit {
 	coord_t			width, height;					// @< The initial dimension
 	bool_t			show;							// @< Should the window be visible initially
 } GWindowInit;
-/* @} */
+/** @} */
 
 /**
  * @brief	A window's minimized, maximized or normal size
@@ -906,6 +906,11 @@ extern "C" {
  * Additional functionality
  *-------------------------------------------------*/
 
+	/* Include groups */
+	#if GWIN_NEED_GROUPS || defined(__DOXYGEN__)
+		#include "gwin/ggroup.h"
+	#endif
+
 	/* Include widgets */
 	#if GWIN_NEED_WIDGET || defined(__DOXYGEN__)
 		#include "gwin/gwidget.h"
diff --git a/src/gwin/ggroup.c b/src/gwin/ggroup.c
new file mode 100644
index 00000000..3bfefe38
--- /dev/null
+++ b/src/gwin/ggroup.c
@@ -0,0 +1,26 @@
+/*
+ * This file is subject to the terms of the GFX License. If a copy of
+ * the license was not distributed with this file, you can obtain one at:
+ *
+ *              http://ugfx.org/license.html
+ */
+
+#include "gfx.h"
+
+#if GFX_USE_GWIN && GWIN_NEED_GROUPS
+
+#include "gwin/class_gwin.h"
+
+GHandle _ggroupCreate(GDisplay *g, GGroupObject *go, const GGroupInit *pInit) {
+	if (!(go = (GGroupObject *)_gwindowCreate(g, &go->g, &pInit->g, &vmt->g, GWIN_FLG_GROUP|GWIN_FLG_ENABLED)))
+		return NULL;
+
+	go->parent = NULL;
+	go->sibling = NULL;
+	go->child = NULL;
+
+	return &go->g;
+}
+
+#endif /* GFX_USE_GWIN && GWIN_NEED_GROUPS */
+