From 4fe67b36e3bbe6ea5505ed7233c245be9374f0ce Mon Sep 17 00:00:00 2001
From: Hannes Schulze <haschu0103@outlook.de>
Date: Sun, 2 Feb 2025 20:59:36 +0100
Subject: refactor selection

---
 lib/nes/app/ui/screen-browser.cc | 71 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 lib/nes/app/ui/screen-browser.cc

(limited to 'lib/nes/app/ui/screen-browser.cc')

diff --git a/lib/nes/app/ui/screen-browser.cc b/lib/nes/app/ui/screen-browser.cc
new file mode 100644
index 0000000..da2d82d
--- /dev/null
+++ b/lib/nes/app/ui/screen-browser.cc
@@ -0,0 +1,71 @@
+#include "nes/app/ui/screen-browser.hh"
+#include "nes/app/graphics/renderer.hh"
+#include "nes/app/graphics/color.hh"
+#include "nes/app/input/input-device-keyboard.hh"
+#include "nes/common/string-builder.hh"
+
+namespace nes::app
+{
+	auto screen_browser::selection_impl::render_item(
+		renderer& renderer, i32 const& item, i32 const x, i32 const y, u32 const width, color const color) const -> void
+	{
+		renderer.render_text_format(x, y, color, text_attributes{}.set_max_width(width), "Item {}", item);
+	}
+
+	auto screen_browser::selection_impl::load_page(int (&items)[5], u32 const page) -> u32
+	{
+		for (auto i = u32{ 0 }; i < 5; ++i)
+		{
+			items[i] = static_cast<i32>(page * 5 + i);
+		}
+		return 5;
+	}
+
+	screen_browser::screen_browser(input_device_keyboard& keyboard)
+		: keyboard_{ keyboard }
+	{
+		selection_.set_page_count(2);
+	}
+
+	auto screen_browser::render(renderer& renderer) -> void
+	{
+		renderer.render_fill(color::background_primary);
+		renderer.render_rect(0, 0, 32, 3, color::background_secondary);
+
+		renderer.render_text(2, 1, "Load Game", color::foreground_primary);
+		renderer.render_text_format(
+			30, 1, color::foreground_secondary, text_attributes{}.set_alignment(text_alignment::right),
+			"Page {}/{}", selection_.get_current_page() + 1, selection_.get_page_count());
+
+		selection_.render(renderer);
+	}
+
+	auto screen_browser::process_events() -> action
+	{
+		while (auto const event = keyboard_.poll_event())
+		{
+			if (event == input_event::key_down(key::space))
+			{
+				selection_.go_next();
+			}
+			else if (event == input_event::key_down(key::arrow_up))
+			{
+				selection_.go_up();
+			}
+			else if (event == input_event::key_down(key::arrow_down))
+			{
+				selection_.go_down();
+			}
+			else if (event == input_event::key_down(key::backspace))
+			{
+				return action::go_to_title;
+			}
+			else if (event == input_event::key_down(key::enter))
+			{
+				return action::launch_game;
+			}
+		}
+
+		return action::none;
+	}
+} // namespace nes::app
\ No newline at end of file
-- 
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