Add tinygl_draw_string

utils/tinygl.c

@@ -177,10 +177,43 @@ void tinygl_draw_char (char ch, tinygl_point_t offset, bool rotate)
             }
         }
     }
-
 }
 
 
+
+/** Draw string (well, as much as possible) using current font.
+    @param str string to draw
+    @param offset coordinates of top left position
+    @param rotate non-zero to rotate string
+    @return number of whole characters drawn.  */
+uint8_t tinygl_draw_string (const char *str, tinygl_point_t offset, bool rotate)
+{
+    uint8_t count = 0;
+
+    while (*str)
+    {
+        if (rotate)
+        {
+            if (offset.y + font->width > TINYGL_HEIGHT)
+                break;
+            tinygl_draw_char (*str, offset, 1);
+            offset.y += font->width + 1;            
+        }
+        else
+        {
+            if (offset.x + font->width > TINYGL_WIDTH)
+                break;
+            tinygl_draw_char (*str, offset, 0);
+            offset.x += font->width + 1;
+        }
+        count++;
+        str++;
+    }
+    return count;
+}
+
+
+
 /** Display a character.
     @param ch character to display
     @return 1 if character fully displayed.  */

utils/tinygl.h

@@ -153,6 +153,14 @@ void tinygl_font_set (font_t *pfont);
 void tinygl_draw_char (char ch, tinygl_point_t offset, bool rotate);
 
 
+/** Draw string (well, as much as possible) using current font.
+    @param str string to draw
+    @param offset coordinates of top left position
+    @param rotate non-zero to rotate string
+    @return number of whole characters drawn.  */
+uint8_t tinygl_draw_string (const char *str, tinygl_point_t offset,
+                            bool rotate);
+
 /** Draw point.
     @param point coordinates of point
     @param pixel_value pixel value to draw point.  */