251 lines
7.1 KiB
Lua
251 lines
7.1 KiB
Lua
utf8 = require 'utf8'
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json = require 'json'
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require 'app'
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require 'test'
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require 'live'
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require 'keychord'
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require 'button'
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-- delegate most business logic to a layer that can be reused by other projects
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require 'edit'
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Editor_state = {}
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function App.version_check()
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-- available modes: run, error
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Mode = 'run'
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Error_message = nil
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Error_count = 0
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-- we'll reuse error mode on load for an initial version check
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Supported_versions = {'11.4', '11.3', '11.2', '11.1', '11.0'} -- keep these sorted in descending order
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local major, minor = love.getVersion()
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Version = major..'.'..minor
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if array.find(Supported_versions, Version) == nil then
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Mode = 'error'
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Error_message = ("This app doesn't support version %s; please use version %s. Press any key to try it with this version anyway."):format(Version, Supported_versions[1])
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print(Error_message)
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-- continue initializing everything; hopefully we won't have errors during initialization
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end
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end
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-- called both in tests and real run
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function App.initialize_globals()
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-- tests currently mostly clear their own state
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-- blinking cursor
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Cursor_time = 0
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-- for hysteresis in a few places
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Current_time = 0
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Last_focus_time = 0 -- https://love2d.org/forums/viewtopic.php?p=249700
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Last_resize_time = 0
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end
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-- called only for real run
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function App.initialize(arg)
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love.keyboard.setTextInput(true) -- bring up keyboard on touch screen
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love.keyboard.setKeyRepeat(true)
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Editor_state = nil -- not used outside editor tests
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love.graphics.setBackgroundColor(1,1,1)
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live.initialize(arg)
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if love.filesystem.getInfo('config') then
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load_settings()
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else
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initialize_default_settings()
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end
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-- TODO: app-specific stuff goes here
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-- keep a few blank lines around: https://merveilles.town/@akkartik/110084833821965708
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love.window.setTitle('TODO')
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if on.initialize then on.initialize(arg) end
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if rawget(_G, 'jit') then
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jit.off()
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jit.flush()
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end
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end
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function print_and_log(s)
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print(s)
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log(3, s)
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end
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function love.quit()
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if on.quit then on.quit() end
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love.filesystem.write('config', json.encode(settings()))
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end
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function restart()
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if on.quit then on.quit() end
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love.filesystem.write('config', json.encode(settings()))
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load_settings()
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if on.initialize then on.initialize() end
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end
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function settings()
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local x, y, displayindex = App.screen.position()
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return {
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x=x, y=y, displayindex=displayindex,
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width=App.screen.width, height=App.screen.height,
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app = on.save_settings and on.save_settings(),
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}
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end
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function load_settings()
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local settings = json.decode(love.filesystem.read('config'))
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_, _, App.screen.flags = App.screen.size()
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App.screen.flags.resizable = true
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App.screen.width, App.screen.height = settings.width, settings.height
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App.screen.resize(App.screen.width, App.screen.height, App.screen.flags)
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set_window_position_from_settings(settings)
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if on.load_settings then on.load_settings(settings.app) end
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end
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function set_window_position_from_settings(settings)
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local os = love.system.getOS()
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if os == 'Linux' then
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-- love.window.setPosition doesn't quite seem to do what is asked of it on Linux.
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App.screen.move(settings.x, settings.y-37, settings.displayindex)
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else
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App.screen.move(settings.x, settings.y, settings.displayindex)
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end
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end
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function initialize_default_settings()
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local font_height = 20
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love.graphics.setFont(love.graphics.newFont(font_height))
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initialize_window_geometry()
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end
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function initialize_window_geometry()
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-- Initialize window width/height and make window resizable.
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--
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-- I get tempted to have opinions about window dimensions here, but they're
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-- non-portable:
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-- - maximizing doesn't work on mobile and messes things up
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-- - maximizing keeps the title bar on screen in Linux, but off screen on
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-- Windows. And there's no way to get the height of the title bar.
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-- It seems more robust to just follow LÖVE's default window size until
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-- someone overrides it.
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App.screen.width, App.screen.height, App.screen.flags = App.screen.size()
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App.screen.flags.resizable = true
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App.screen.resize(App.screen.width, App.screen.height, App.screen.flags)
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end
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function App.resize(w, h)
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--? print(("Window resized to width: %d and height: %d."):format(w, h))
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App.screen.width, App.screen.height = w, h
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Last_resize_time = Current_time
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if on.resize then on.resize(w,h) end
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end
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function App.filedropped(file)
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if on.file_drop then on.file_drop(file) end
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end
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function App.draw()
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if Mode == 'error' then
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love.graphics.setColor(0,0,1)
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love.graphics.rectangle('fill', 0,0, App.screen.width, App.screen.height)
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love.graphics.setColor(1,1,1)
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love.graphics.printf(Error_message, 40,40, 600)
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return
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end
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if on.draw then on.draw() end
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end
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function App.update(dt)
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Current_time = Current_time + dt
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-- some hysteresis while resizing
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if Current_time < Last_resize_time + 0.1 then
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return
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end
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Cursor_time = Cursor_time + dt
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-- listen for commands in both 'error' and 'run' modes
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live.update(dt)
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if Mode == 'run' then
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if on.update then on.update(dt) end
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end
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end
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function App.mousepressed(x,y, mouse_button)
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if Mode == 'error' then return end
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Cursor_time = 0 -- ensure cursor is visible immediately after it moves
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if on.mouse_press then on.mouse_press(x,y, mouse_button) end
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end
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function App.mousereleased(x,y, mouse_button)
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if Mode == 'error' then return end
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Cursor_time = 0 -- ensure cursor is visible immediately after it moves
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if on.mouse_release then on.mouse_release(x,y, mouse_button) end
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end
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function App.wheelmoved(dx,dy)
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if Mode == 'error' then return end
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Cursor_time = 0 -- ensure cursor is visible immediately after it moves
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if on.mouse_wheel_move then on.mouse_wheel_move(dx,dy) end
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end
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function App.focus(in_focus)
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if Mode == 'error' then return end
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if in_focus then
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Last_focus_time = Current_time
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end
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if in_focus then
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love.graphics.setBackgroundColor(1,1,1)
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else
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love.graphics.setBackgroundColor(0.8,0.8,0.8)
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end
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if on.focus then on.focus(in_focus) end
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end
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-- App.keypressed is defined in keychord.lua
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function App.keychord_press(chord, key)
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if Mode == 'error' then
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if chord == 'C-c' then
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love.system.setClipboardText(Error_message)
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end
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return
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end
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-- ignore events for some time after window in focus (mostly alt-tab)
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if Current_time < Last_focus_time + 0.01 then
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return
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end
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Cursor_time = 0 -- ensure cursor is visible immediately after it moves
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if on.keychord_press then on.keychord_press(chord, key) end
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end
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function App.textinput(t)
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if Mode == 'error' then return end
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-- ignore events for some time after window in focus (mostly alt-tab)
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if Current_time < Last_focus_time + 0.01 then
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return
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end
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Cursor_time = 0 -- ensure cursor is visible immediately after it moves
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if on.text_input then on.text_input(t) end
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end
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function App.keyreleased(key, scancode)
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if Mode == 'error' then
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Mode = 'run'
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return
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end
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-- ignore events for some time after window in focus (mostly alt-tab)
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if Current_time < Last_focus_time + 0.01 then
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return
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end
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Cursor_time = 0 -- ensure cursor is visible immediately after it moves
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if on.key_release then on.key_release(key, scancode) end
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end
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