working on the draw_text method

Cargo.lock

@@ -2,6 +2,16 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "ab_glyph"
+version = "0.2.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "20b228f2c198f98d4337ceb560333fb12cbb2f4948a953bf8c57d09deb219603"
+dependencies = [
+ "ab_glyph_rasterizer",
+ "owned_ttf_parser 0.13.2",
+]
+
 [[package]]
 name = "ab_glyph_rasterizer"
 version = "0.1.5"
@@ -11,12 +21,13 @@ checksum = "a13739d7177fbd22bb0ed28badfff9f372f8bef46c863db4e1c6248f6b223b6e"
 [[package]]
 name = "able_graphics_library"
 version = "0.1.0"
-source = "git+https://git.ablecorp.us/Able/able_graphics_library.git#04b16fbc221eb339e02a07d184914bf2f07865ca"
+source = "git+https://git.ablecorp.us/Able/able_graphics_library.git#e8bfdb3f6d52974c471de8f38471945b3af71628"
 
 [[package]]
 name = "agl_simple_impl"
 version = "0.1.0"
 dependencies = [
+ "ab_glyph",
  "able_graphics_library",
  "mini_gl_fb",
 ]
@@ -873,7 +884,16 @@ version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9f923fb806c46266c02ab4a5b239735c144bdeda724a50ed058e5226f594cde3"
 dependencies = [
- "ttf-parser",
+ "ttf-parser 0.6.2",
+]
+
+[[package]]
+name = "owned_ttf_parser"
+version = "0.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "65ee3f72636e6f164cc41c9f9057f4e58c4e13507699ea7f5e5242b64b8198ee"
+dependencies = [
+ "ttf-parser 0.13.4",
 ]
 
 [[package]]
@@ -994,7 +1014,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dc7c727aded0be18c5b80c1640eae0ac8e396abf6fa8477d96cb37d18ee5ec59"
 dependencies = [
  "ab_glyph_rasterizer",
- "owned_ttf_parser",
+ "owned_ttf_parser 0.6.0",
 ]
 
 [[package]]
@@ -1123,6 +1143,12 @@ version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3e5d7cd7ab3e47dda6e56542f4bbf3824c15234958c6e1bd6aaa347e93499fdc"
 
+[[package]]
+name = "ttf-parser"
+version = "0.13.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "76dacc724328b3d5e2ed67f9e30cdb56893a34ab239032502cc8f19f8dae4bbc"
+
 [[package]]
 name = "unicode-xid"
 version = "0.2.2"

Cargo.toml

@@ -8,3 +8,4 @@ edition = "2018"
 [dependencies]
 mini_gl_fb = "0.9.0"
 able_graphics_library  = {git = "https://git.ablecorp.us:443/Able/able_graphics_library.git"}
+ab_glyph = "0.2.12"

font/LICENSE.txt

@@ -0,0 +1,202 @@
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src/graphics_api_impl.rs

@@ -1,5 +1,6 @@
 #![allow(dead_code, unused)]
 
+use ab_glyph::FontRef;
 use able_graphics_library::{AglApi, FrameBuffer, Point, HEIGHT, RGBA, WIDTH};
 use mini_gl_fb::glutin::platform::unix::x11::ffi::XK_R10;
 
@@ -53,6 +54,7 @@ impl AglApi for GraphicsRenderer {
 
         self.buff[coordinates as usize] = color;
     }
+
     fn put_triangle(
         &mut self,
         coords_1: Point,
@@ -63,6 +65,7 @@ impl AglApi for GraphicsRenderer {
     ) {
         todo!();
     }
+
     fn paint_cursor(&mut self, coords: Point) {
         todo!();
     }
@@ -72,6 +75,31 @@ impl AglApi for GraphicsRenderer {
     fn show_cursor() {
         todo!();
     }
+    fn draw_text(&mut self, coords: Point, scale: u8, color: RGBA, text: String) {
+        use ab_glyph::{point, Font, FontRef, Glyph};
+
+        let font: FontRef =
+            FontRef::try_from_slice(include_bytes!("../font/Roboto-Regular.ttf")).unwrap();
+
+        // Get a glyph for 'q' with a scale & position.
+        let q_glyph: Glyph = font
+            .glyph_id('a')
+            .with_scale_and_position(scale as f32, point(coords.x as f32, coords.y as f32));
+        // Draw it.
+        if let Some(q) = font.outline_glyph(q_glyph) {
+            q.draw(|x, y, c| {
+                /* draw pixel `(x, y)` with coverage: `c` */
+                println!("h");
+                self.put_pixel(
+                    Point {
+                        x: x as u16,
+                        y: y as u16,
+                    },
+                    color,
+                );
+            });
+        }
+    }
     /// Actually move the double buffer to the single buffer and "update" the screen
     fn draw(&mut self) {}
     fn clear(&mut self, color: RGBA) {

src/main.rs

@@ -59,6 +59,7 @@ fn main() {
             },
         );
     }
+
     xyz.put_line(
         Point { x: 3, y: 30 },
         Point { x: 324, y: 50 },
@@ -71,9 +72,8 @@ fn main() {
         },
     );
 
-    xyz.put_line(
-        Point { x: 1, y: 300 },
-        Point { x: 1, y: 200 },
+    xyz.draw_text(
+        Point { x: 1000, y: 90 },
         1,
         RGBA {
             r: 0,
@@ -81,8 +81,8 @@ fn main() {
             b: 0,
             a: 0,
         },
+        "Hello".to_string(),
     );
-
     // update pixels
     for x in 0..600 * 400 {
         buffer[x] = [xyz.buff[x].r, xyz.buff[x].g, xyz.buff[x].b, xyz.buff[x].a]