add encryption/decryption

1 files changed, 66 insertions, 0 deletions

diff --git a/lib/nes/app/ui/screen-prompt-key.cc b/lib/nes/app/ui/screen-prompt-key.cc
new file mode 100644
index 0000000..e15d724
--- /dev/null
+++ b/lib/nes/app/ui/screen-prompt-key.cc
@@ -0,0 +1,66 @@
+#include "nes/app/ui/screen-prompt-key.hh"
+#include "nes/app/graphics/renderer.hh"
+#include "nes/app/graphics/color.hh"
+#include "nes/app/input/input-device-keyboard.hh"
+
+namespace nes::app
+{
+	screen_prompt_key::screen_prompt_key(input_device_keyboard& keyboard)
+		: keyboard_{ keyboard }
+	{
+	}
+
+	auto screen_prompt_key::reset(string_view const file_name) -> void
+	{
+		file_name_ = file_name;
+		key_.clear();
+	}
+
+	auto screen_prompt_key::render(renderer& renderer) -> void
+	{
+		renderer.render_rect(2, 8, 28, 10, color::background_secondary);
+		renderer.render_border(2, 8, 28, 10, color::foreground_primary);
+		renderer.render_rect(4, 12, 24, 1, color::background_primary);
+
+		auto const attrs = text_attributes{}
+			.set_alignment(text_alignment::center)
+			.set_ellipsize_mode(ellipsize_mode::end)
+			.set_max_width(26);
+		renderer.render_text(16, 10, "Key:", color::foreground_primary, attrs);
+		auto const key_attrs = text_attributes{}
+			.set_alignment(text_alignment::left)
+			.set_ellipsize_mode(ellipsize_mode::clip)
+			.set_max_width(24);
+		renderer.render_text_format(4, 12, color::foreground_primary, key_attrs, "{}_", key_.get_result());
+		renderer.render_text(16, 15, "> OK <", color::accent_primary, attrs);
+	}
+
+	auto screen_prompt_key::process_events() -> action
+	{
+		while (auto const event = keyboard_.poll_event())
+		{
+			if (event == input_event::key_down(key::escape))
+			{
+				return action::close_popup();
+			}
+			else if (event == input_event::key_down(key::enter))
+			{
+				return action::launch_game(file_name_, key_.get_result());
+			}
+			else if (event == input_event::key_down(key::backspace))
+			{
+				key_.remove_last();
+			}
+			else if (event.get_type() == input_event::type::key_down)
+			{
+				auto const symbol = to_ascii(event.get_key(), keyboard_.read_modifiers());
+				if (symbol != 0)
+				{
+					key_.append_char(symbol);
+				}
+			}
+		}
+
+		return action{};
+	}
+} // namespace nes::app
\ No newline at end of file