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#include "nes/app/ui/screen-help.hh"
#include "nes/app/input/input-manager.hh"
#include "nes/app/preferences.hh"
namespace
{
}
namespace nes::app
{
screen_help::screen_help(input_manager& input_manager)
: input_manager_{ input_manager }
{ }
auto screen_help::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, "Key Bindings", color::foreground_primary,
text_attributes{}.set_max_width(26).set_ellipsize_mode(ellipsize_mode::middle));
auto render_list_item = [&](unsigned& y, string_view name, string_view value, bool fullline = true, bool left = true) -> void
{
unsigned x_offset = 2;
unsigned container_width = renderer::width - 2 * x_offset;
if (!fullline)
{
container_width -= x_offset; // offset between columns
container_width /= 2;
}
unsigned column_offset = 0;
if (!fullline && !left)
{
column_offset = container_width + 2 * x_offset;
}
else
{
column_offset = x_offset;
}
unsigned max_val_width = (container_width - x_offset) / 2;
unsigned value_width = value.get_length();
if (value_width > max_val_width)
{
value_width = max_val_width;
}
unsigned name_width = container_width - value_width - x_offset;
renderer.render_text(
column_offset, y, name, color::foreground_primary,
text_attributes{}.set_max_width(name_width).set_ellipsize_mode(ellipsize_mode::middle));
renderer.render_text(
column_offset + container_width, y, value, color::foreground_secondary,
text_attributes{}.set_alignment(text_alignment::right).set_max_width(value_width).set_ellipsize_mode(ellipsize_mode::middle));
if (fullline || !left)
{
y += 2;
}
};
auto render_title = [&](unsigned& y, string_view title) -> void
{
renderer.render_text(
14 + 2, y, title, color::accent_primary,
text_attributes{}.set_alignment(nes::app::text_alignment::center).set_max_width(28).set_ellipsize_mode(ellipsize_mode::middle));
y += 2;
};
unsigned y_offset = 5;
render_title(y_offset, "> Launcher <");
render_list_item(y_offset, "Select", "<Enter>");
render_list_item(y_offset, "Navigation", "<Arrow Keys>");
render_list_item(y_offset, "Go Back", "<Backspace>");
y_offset += 1;
render_title(y_offset, "> Games <");
render_list_item(y_offset, "Up", "W", false, true);
render_list_item(y_offset, "Left", "A", false, false);
render_list_item(y_offset, "Down", "S", false, true);
render_list_item(y_offset, "Right", "D", false, false);
render_list_item(y_offset, "Action B", "K", false, true);
render_list_item(y_offset, "Action A", "L", false, false);
render_list_item(y_offset, "Start", "<Enter>");
render_list_item(y_offset, "Select", "<Space>");
}
auto screen_help::process_events() -> action
{
while (auto const event = input_manager_.get_keyboard().poll_event())
{
if (event == input_event::key_down(key::backspace))
{
return action::go_to_title();
}
}
return action{};
}
} // namespace nes::app
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