feat: logically separate spacing and wrapping with matrix layout

dot-matrix/src/main.rs

@@ -63,37 +63,38 @@ fn build_ui(app: &gtk::Application) {
 
     let drawing_area = DrawingArea::new();
 
-    let rows = 100 as u8;
-    let cols = 100 as u8;
+    let rows = 36 as u8;
+    let cols = 72 as u8;
 
     // Generate the matrix using iterators
     let mut dot_matrix: Vec<Vec<u8>> = (0..rows).map(|_| (0..cols).map(|_| 0).collect()).collect();
-    let insert_matrix: Vec<Vec<u8>> = (0..7).map(|_| (0..5).map(|_| 1).collect()).collect();
+    // let insert_matrix: Vec<Vec<u8>> = (0..7).map(|_| (0..5).map(|_| 1).collect()).collect();
     let font_5x7: Font = Font::new("5x7");
-    let char_bitmap = font_5x7.get_char_bitmap(1).unwrap();
+    // let char_bitmap = font_5x7.get_char_bitmap(1).unwrap();
 
     // insert_matrix_at(&mut dot_matrix, &insert_matrix, 0, 0);
     // insert_matrix_at(&mut dot_matrix, &insert_matrix, 0, 6);
     // insert_matrix_at(&mut dot_matrix, &char_bitmap, 0, 12);
 
-    let thing = String::from("ABCDEFG");
+    let thing = String::from("abcdefghijklmnop");
     let ascii_values: &Vec<u8> = &thing.chars().map(|c| c as u8).collect();
 
     let mut col_offset = 0;
 
     for ch in ascii_values {
+        let char_matrix = &font_5x7.get_char_bitmap(*ch as u64).unwrap();
+
         insert_matrix_at(
             &mut dot_matrix,
-            &font_5x7.get_char_bitmap(*ch as u64).unwrap(),
+            char_matrix,
             0,
-            col_offset * 6,
+            col_offset,
         );
 
-        col_offset = col_offset + 1;
+        println!("length of character {}", char_matrix.first().unwrap().len());
+        col_offset += char_matrix.first().unwrap().len() + 1;
     }
 
-    println!("{:?}", ascii_values);
-
     drawing_area.set_draw_func(move |_area, cr, width, height| {
         draw_dot_matrix(cr, width, height, &dot_matrix);
     });
@@ -115,16 +116,23 @@ fn draw_dot_matrix(cr: &Context, width: i32, height: i32, matrix: &Vec<Vec<u8>>)
     cr.set_source_rgb(1.0, 1.0, 0.0);
 
     // Calculate spacing
-    let spacing_x = 25.0;
-    let spacing_y = 25.0;
-    let radius = 10.0;
+    let pos_x = 25.0;
+    let pos_y = 25.0;
+
+    let mut offset_row = 0.0;
+    let mut current_line_width = 0.0;
 
     for (row_index, row) in matrix.iter().enumerate() {
+        if row_index != 0 && row_index % 8 == 0 {
+            offset_row += 25.0
+        }
+
         for (col_index, &val) in row.iter().enumerate() {
             if val == 1 {
-                let x = (col_index as f64 + 0.5) * spacing_x;
-                let y = (row_index as f64 + 0.5) * spacing_y;
-                cr.arc(x, y, radius, 0.0, std::f64::consts::PI * 2.0);
+                let x = (col_index as f64) * pos_x + pos_x;
+                let y = (row_index as f64) * pos_y + offset_row;
+                cr.rectangle(x, y, 20.0, 20.0);
+                
                 let _ = cr.fill();
             }
         }