From 2c95af7413e3d97e3683876a8e201e4a408f5f2b Mon Sep 17 00:00:00 2001
From: Tectu <joel@unormal.org>
Date: Wed, 27 Jun 2012 11:12:45 +0200
Subject: [PATCH] added shadow support for buttons

---
 gui.c | 10 +++++++++-
 gui.h |  3 ++-
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/gui.c b/gui.c
index 70e1dc8a..8b3ba893 100644
--- a/gui.c
+++ b/gui.c
@@ -135,8 +135,9 @@ uint8_t guiDeleteElement(char *label) {
 	return deleteElement(label);
 }
 
-uint8_t guiDrawButton(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, char *str, uint16_t fontColor, uint16_t buttonColor, char *label, uint8_t *active, uint8_t *state) {
+uint8_t guiDrawButton(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, char *str, uint16_t fontColor, uint16_t buttonColor, uint16_t shadow, char *label, uint8_t *active, uint8_t *state) {
 	struct guiNode_t *newNode;
+	uint16_t i;
 
 	newNode = chHeapAlloc(NULL, sizeof(struct guiNode_t));
 	if(newNode == NULL)
@@ -157,6 +158,13 @@ uint8_t guiDrawButton(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, char *
 	
 	lcdDrawRectString(x0, y0, x1, y1, str, fontColor, buttonColor);
 
+	if(shadow != 0) {
+		for(i = 0; i < shadow; i++) {
+			lcdDrawLine(x1+i, y0-i, x1+i, y1-i-1, Black);
+			lcdDrawLine(x0+i, y0-i, x1+i, y0-i, Black);
+		}
+	}
+
 	chHeapFree(newNode);
 
 	return 1;
diff --git a/gui.h b/gui.h
index 61dead64..513043aa 100644
--- a/gui.h
+++ b/gui.h
@@ -63,12 +63,13 @@ uint8_t guiDeleteElement(char *label);
  *				- str:				string that gets drawn into the rectangle - button's lable
  *				- fontColor:		color of the lable
  *				- buttonColor:		color of the rectangle
+ *				- shadow:			draws a black shadow with N pixels size if != 0 
  *				- active:			pass pointer to variable which holds the state 'active' or 'inactive'
  *				- state:			pass pointer to variable whcih will keep the state of the button (pressed / unpressed)'
  *
  * return:		1 if button successfully created
  */
-uint8_t guiDrawButton(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, char *str, uint16_t fontColor, uint16_t buttonColor, char *label, uint8_t *active, uint8_t *state);
+uint8_t guiDrawButton(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, char *str, uint16_t fontColor, uint16_t buttonColor, uint16_t shadow, char *label, uint8_t *active, uint8_t *state);
 
 uint8_t guiDrawSlider(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint8_t orientation, uint16_t frameColor, uint16_t bkColor, uint16_t valueColor, char *label, uint8_t *active, uint8_t *value);