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mirror of https://github.com/NixOS/mobile-nixos.git synced 2024-12-17 13:10:29 +03:00
mobile-nixos/boot/gui/main.rb
2020-07-23 19:21:50 -04:00

108 lines
3.3 KiB
Ruby

# File with boot selection
SELECTIONS = "/run/boot/selection.json"
# Runs and prints a command. Probably.
def run(*cmd)
$stderr.puts " $ " + cmd.join(" ")
system(*cmd) unless LVGL::Introspection.simulator?
end
module BootGUI
class MainWindow < LVGUI::BaseWindow
include LVGUI::ButtonPalette
# Add the logo to the view.
def logo()
# Try to find the logo, but don't fail if there isn't one.
file = nil
file = "/etc/logo.svg" if File.exist?("/etc/logo.svg")
file = "./logo.svg" if File.exist?("./logo.svg")
return unless file
if @container.get_height > @container.get_width
LVGL::Hacks::LVNanoSVG.resize_next_width((@container.get_width_fit * 0.8).to_i)
else
# Detecting the available space where the layout will stretch into is
# apparently hard with lvgl, thus we rely on the vertical resolution.
# Meh, that's not *so* bad.
# While it's a crude approximation, for layouting it's fine.
LVGL::Hacks::LVNanoSVG.resize_next_height((@container.get_height * 0.15).to_i)
end
@logo = LVGL::LVImage.new(@container)
@logo.set_src(file)
end
def initialize()
super()
# Add the logo
logo
# An explanatory label
LVGL::LVLabel.new(@container).tap do |label|
label.set_long_mode(LVGL::LABEL_LONG::BREAK)
label.set_text(%Q{Your device booted in recovery mode.})
label.set_align(LVGL::LABEL_ALIGN::CENTER)
label.set_width(@container.get_width_fit)
end
# Our buttons palette!
add_buttons([
["Generations #{LVGL::Symbols::RIGHT}", ->() { GenerationsWindow.instance.present }],
["Reboot to bootloader", ->() { run("reboot bootloader") }],
["Reboot to recovery", ->() { run("reboot recovery") }],
["Reboot to system", ->() { run("reboot") }],
["Power off", ->() { run("poweroff") }],
])
end
end
# Shows the list of generations to boot into.
class GenerationsWindow < LVGUI::BaseWindow
include LVGUI::ButtonPalette
def initialize()
super()
LVGUI::BackButton.new(@toolbar, MainWindow.instance)
# Refresh the scrolling container, since we added to the toolbar.
@container.refresh
if File.exist?(::SELECTIONS)
JSON.parse(File.read(::SELECTIONS)).each do |selection|
add_button(selection["name"]) do
File.open("/run/boot/choice", "w") do |file|
file.write(selection["id"])
end
# Put back the console on the framebuffer
VTConsole.map_console(1)
exit 0
end
end
else
LVGL::LVLabel.new(@container).tap do |label|
text = "No generations could be found.\n\n"
if LVGL::Introspection.simulator?
text += "This is normal in the simulator."
else
text += "This is anormal, and may be a sign of things being wrong."
end
label.set_long_mode(LVGL::LABEL_LONG::BREAK)
label.set_text(text)
label.set_align(LVGL::LABEL_ALIGN::CENTER)
label.set_width(@container.get_width_fit)
end
end
end
end
end
# We need to start somewhere...
BootGUI::MainWindow.instance.present
# And keep the GUI active.
LVGUI.main_loop