a simple battery function to display a battery of passed width, length,

and location on the player.  As similar to the player display as I could get.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@186 a1c6a512-1295-4272-9138-f99709370657

uisimulator/battery.c

@@ -0,0 +1,102 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 1999 Robert Hak (rhak@ramapo.edu)
+ *
+ * Heavily modified for embedded use by Björn Stenberg (bjorn@haxx.se)
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "types.h"
+#include "lcd.h"
+#include "debug.h"
+#define HAVE_RECORDER_KEYPAD
+#include "button.h"
+
+#ifdef SIMULATOR
+#include <stdio.h>
+#include <unistd.h>
+#endif
+
+/* I hacked this function to be placed inside because I figure we will need
+   something like it eventually.
+
+   Args are fairly straight forward. 
+   int xbase: location of "bottom" of battery on screen 
+   int ybase: location of "left" edge of battery on screen 
+   int len: how long is the battery to be (in pixels) 
+   int wid: how tall is the battery to be (in pixels) 
+   int percent: what percentage of the charge has been used 
+
+   Note: I am making use of the Logf() function until logging is 
+         straightened out. 
+*/ 
+
+void draw_battery(int xbase, int ybase, int len, int wid, int percent) 
+{ 
+    float capacity = 0; 
+    int bar_xoffset = 2; 
+    int bar_yoffset = 2; 
+    int bar_len = 0; 
+    int bar_wid = wid - (bar_xoffset*2); 
+    int i = 0; 
+
+    /* We only worry about length and width because if you place 
+       the battery off the screen, its your own damn fault. We log 
+       and then just draw an empty battery */ 
+    if((percent > 100) || (percent < 0) || (len < 0) || (wid < 0)) { 
+/*       debug("Error: Battery data invalid");  */
+        percent = 0; 
+    }
+
+    /* top batt. edge */ 
+    lcd_drawline(xbase, ybase, xbase+len-2, ybase); 
+
+    /* bot batt. edge */ 
+    lcd_drawline(xbase, ybase+wid, 
+                 xbase+len-2, ybase+wid); 
+
+    /* left batt. edge */ 
+    lcd_drawline(xbase, ybase, xbase, ybase+wid); 
+
+    /* right batt. edge */ 
+    lcd_drawline(xbase+len, ybase+1, 
+                 xbase+len, ybase+wid-1); 
+
+    /* 2 dots that account for the nub on the right side of the battery */ 
+    lcd_drawpixel(xbase+len-1, ybase+1); 
+    lcd_drawpixel(xbase+len-1, ybase+wid-1); 
+
+    if(percent > 0) { 
+        /* % battery is full, 100% is length-bar_xoffset-1 pixels */ 
+        capacity = ((float)percent / 100.0) * (len-(bar_xoffset*2)-1); 
+        bar_len = capacity; 
+
+        for(i = 0; i < bar_wid+1; i++) { 
+            lcd_drawline(xbase+bar_xoffset, ybase+bar_yoffset+i, 
+                         xbase+bar_xoffset+bar_len, ybase+bar_yoffset+i); 
+        } 
+    } 
+	lcd_update();
+} 
+
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