More refactor, exposing some interface to graphics

src/graphics.rs

@@ -45,24 +45,22 @@ impl GraphicsBuf {
             }
         });
 
-        self.sprite_atlas
-            .draw_string(10, 10, "Hello World!", &mut gfx_buf);
-
-        self.sprite_atlas.draw_textfield(
-            10,
-            20,
-            110,
-            10,
-            "I think this font has a *lot* of 'character'! ;)",
-            &mut gfx_buf,
-        );
-
         draw_bresenham_line(0, 0, 127, 0, &mut gfx_buf);
         draw_bresenham_line(0, 63, 128, 63, &mut gfx_buf);
         draw_bresenham_line(0, 0, 0, 63, &mut gfx_buf);
         draw_bresenham_line(127, 0, 127, 63, &mut gfx_buf);
     }
 
+    pub fn draw_string(&mut self, x: u8, y: u8, string: &str) {
+        self.sprite_atlas
+            .draw_string(x, y, string, &mut self.buffer);
+    }
+
+    pub fn draw_textfield(&mut self, x: u8, y: u8, width: u8, height: u8, string: &str) {
+        self.sprite_atlas
+            .draw_textfield(x, y, width, height, string, &mut self.buffer);
+    }
+
     pub fn get_px_buffer(&self) -> &[u8; 8192] {
         &self.buffer
     }

src/main.rs

@@ -72,6 +72,9 @@ fn main() -> ! {
 
     loop {
         gfx_buf.clear();
+
+        gfx_buf.draw_textfield(10, 10, 100, 60, "Hello! This is a test. :)");
+
         gfx_buf.redraw();
 
         sh1106_dev.blit_framebuffer(&mut i2c, &gfx_buf);