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render cursor on y axis

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This commit is contained in:
Grant Horner
2026-04-21 16:24:56 -04:00
parent c41bb88e8e
commit 1dabb59a65
1 changed files with 64 additions and 17 deletions
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81
edit.jai
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@@ -12,6 +12,11 @@ window_height := 600;
first_line := 0;
cursor_x := 0;
cursor_y := 0;
White :: Vector4.{1, 1, 1, 1};
main :: () {
args := get_command_line_arguments();
assert(args.count == 2, "The file name must be passed as a CLI argument");
@@ -38,20 +43,7 @@ main :: () {
Input.update_window_events();
for Input.get_window_resizes() {
Simp.update_window(it.window);
if it.window == window {
should_reinit := (it.width != window_width) || (it.height != window_height);
window_width = it.width;
window_height = it.height;
if should_reinit {
my_init_fonts();
}
}
}
handle_window_resizes(window);
for event : Input.events_this_frame {
if event.type == .QUIT {
@@ -62,6 +54,11 @@ main :: () {
if event.type == .KEYBOARD && event.key_pressed {
if event.key_code == {
case .ESCAPE; should_quit = true;
case .ARROW_UP; #through;
case .ARROW_DOWN; #through;
case .ARROW_LEFT; #through;
case .ARROW_RIGHT; handle_arrow(event.key_code);
}
}
}
@@ -82,14 +79,64 @@ main :: () {
render_edit_buffer :: () {
num_lines_in_screen := window_height / line_height - 1;
viewable_lines := array_view(lines, first_line, num_lines_in_screen);
Simp.set_shader_for_text();
color :: Vector4.{1, 1, 1, 1};
for line_buffer: viewable_lines {
Simp.set_shader_for_text();
line := builder_to_line(*line_buffer);
Simp.prepare_text(my_font, line);
Simp.draw_prepared_text(my_font, 5, window_height - (it_index + 1) * line_height, color);
top_of_line := window_height - (it_index + 1) * line_height;
Simp.draw_prepared_text(my_font, 5, top_of_line, White);
if it_index == cursor_y {
Simp.set_shader_for_color();
Simp.immediate_quad(
5., cast(float) top_of_line + line_height,
6., cast(float) top_of_line,
White);
}
}
}
handle_window_resizes :: (window: Window_Type) {
for Input.get_window_resizes() {
Simp.update_window(it.window);
if it.window == window {
should_reinit := (it.width != window_width) || (it.height != window_height);
window_width = it.width;
window_height = it.height;
if should_reinit {
my_init_fonts();
}
}
}
}
handle_arrow :: (key_code: Input.Key_Code) {
num_lines_in_screen := window_height / line_height - 1;
viewable_lines := array_view(lines, first_line, num_lines_in_screen);
max_chars := 30;
if key_code == {
case .ARROW_UP;
cursor_y = ifx cursor_y == 0
then 0
else cursor_y - 1;
case .ARROW_DOWN;
cursor_y = ifx cursor_y == viewable_lines.count
then viewable_lines.count
else cursor_y + 1;
case .ARROW_LEFT;
cursor_x = ifx cursor_x == 0
then 0
else cursor_x - 1;
case .ARROW_RIGHT;
cursor_y = ifx cursor_x == max_chars
then max_chars
else cursor_x + 1;
}
}