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#include "nes/app/ui/screen-file-viewer.hh"
#include "nes/app/file-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/containers/span.hh"
namespace nes::app
{
screen_file_viewer::screen_file_viewer(input_device_keyboard& keyboard, file_browser& file_browser)
: keyboard_{ keyboard }
, file_browser_{ file_browser }
{
}
auto screen_file_viewer::load(string_view const file_name) -> status
{
auto length = u32{ 0 };
if (auto const s = file_browser_.load(file_name, buffer_, &length); s != status::success) { return s; }
// Do some magical text wrapping
auto const data = span{ buffer_ }.subspan(0, length);
auto const src = string_view{ data.unsafe_bitcast<char const>() };
line_count_ = 0;
auto line_pos = u32{ 0 };
auto line_start = u32{ 0 };
auto const end_line = [&](bool const force)
{
auto const l = src.substring(line_start, line_pos);
if (l.is_empty() && !force) { return; }
if (line_count_ < max_line_count)
{
lines_[line_count_] = l;
line_count_ += 1;
}
line_pos = 0;
};
for (auto i = u32{ 0 }; i < src.get_length(); ++i)
{
auto const c = src[i];
if (c == '\n' || line_pos == line_length)
{
end_line(c == '\n');
line_pos = 0;
line_start = i + 1;
}
else if (c == '\r')
{
// ignore
}
else
{
line_pos += 1;
}
}
end_line(false);
return status::success;
}
auto screen_file_viewer::render(renderer& renderer) -> void
{
auto const width = line_length + 4;
auto const height = line_count_ + 7;
auto const y = (renderer::height - height) / 2 + 2;
renderer.render_rect(2, y, width, height, color::background_secondary);
renderer.render_border(2, y, width, height, color::foreground_primary);
auto const attrs = text_attributes{}
.set_alignment(text_alignment::left)
.set_max_width(line_length);
for (auto i = u32{ 0 }; i < line_count_; ++i)
{
renderer.render_text(4, y + 2 + i, lines_[i], color::foreground_primary, attrs);
}
auto const button_attrs = text_attributes{}
.set_alignment(text_alignment::center)
.set_ellipsize_mode(ellipsize_mode::end)
.set_max_width(26);
renderer.render_text(16, y + height - 3, "> Close <", color::accent_primary, button_attrs);
}
auto screen_file_viewer::process_events() -> action
{
while (auto const event = keyboard_.poll_event())
{
if (event == input_event::key_down(key::escape) || event == input_event::key_down(key::enter))
{
return action::close_popup();
}
}
return action{};
}
} // namespace nes::app
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