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#include "nes/app/ui/screen-browser.hh"
#include "nes/app/graphics/renderer.hh"
#include "nes/app/graphics/color.hh"
#include "nes/app/graphics/tiles/icons.hh"
#include "nes/app/input/input-device-keyboard.hh"
#include "nes/common/containers/path-view.hh"
#include "nes/common/utils.hh"
namespace nes::app
{
auto screen_browser::selection_impl::render_item(
renderer& renderer, item const& item, i32 const x, i32 const y, u32 const width, color const c) const -> void
{
switch (item.entry.get_type())
{
case file_browser::entry_type::file: renderer.render_mask_tile(x, y, tiles::icon_cartridge, c); break;
case file_browser::entry_type::directory: renderer.render_mask_tile(x, y, tiles::icon_directory, c); break;
}
renderer.render_text(x + 2, y, item.entry.get_name(), c, text_attributes{}
.set_ellipsize_mode(ellipsize_mode::end)
.set_max_width(width - 2));
}
auto screen_browser::selection_impl::load_page(item (&items)[page_size], u32 const page) -> u32
{
auto count = u32{ 0 };
auto position = page * page_size;
if (!file_browser_.get_path().is_empty())
{
if (page == 0)
{
items[count].is_parent = true;
items[count].entry = file_browser::entry{ file_browser::entry_type::directory, "[Parent Directory]" };
count += 1;
}
else
{
// First page has been missing an item, offset by one.
position -= 1;
}
}
file_browser_.seek(position);
while (count < page_size)
{
auto entry = file_browser::entry{};
if (!file_browser_.read_next(&entry)) { break; }
items[count].is_parent = false;
items[count].entry = entry;
count += 1;
}
return count;
}
screen_browser::screen_browser(input_device_keyboard& keyboard, file_browser& file_browser)
: keyboard_{ keyboard }
, file_browser_{ file_browser }
, selection_{ file_browser }
{
refresh();
}
auto screen_browser::render(renderer& renderer) -> void
{
renderer.render_fill(color::background_primary);
renderer.render_rect(0, 0, 32, 3, color::background_secondary);
auto const page_length = 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());
renderer.render_text(
2, 1, file_browser_.get_path().get_path(), color::foreground_primary,
text_attributes{}.set_max_width(26 - page_length).set_ellipsize_mode(ellipsize_mode::middle));
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))
{
if (navigation_steps_ > 0)
{
if (auto const s = file_browser_.navigate_up(); s != status::success)
{
return action::show_error("Unable to navigate to directory", s);
}
refresh();
navigation_steps_ -= 1;
}
else
{
return action::go_to_title();
}
}
else if (event == input_event::key_down(key::enter))
{
auto const selected = selection_.get_selected();
if (selected)
{
if (selected->is_parent)
{
if (auto const s = file_browser_.navigate_up(); s != status::success)
{
return action::show_error("Unable to navigate to directory", s);
}
refresh();
if (navigation_steps_ > 0) { navigation_steps_ -= 1; }
}
else if (selected->entry.get_type() == file_browser::entry_type::directory)
{
if (auto const s = file_browser_.navigate(selected->entry.get_name()); s != status::success)
{
return action::show_error("Unable to navigate to directory", s);
}
refresh();
navigation_steps_ += 1;
}
else if (selected->entry.get_type() == file_browser::entry_type::file)
{
return action::launch_game(selected->entry.get_name());
}
}
}
}
return action{};
}
auto screen_browser::refresh() -> void
{
file_browser_.seek(0);
auto count = u32{ 0 };
while (file_browser_.read_next(nullptr)) { count += 1; }
// Round up to get page count.
auto const page_count = (count + (page_size - 1)) / page_size;
// Always show at least one page.
selection_.set_page_count(max(u32{ 1 }, page_count));
}
} // namespace nes::app
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