main.lua

   1 -- Entrypoint for the app. You can edit this file from within the app if
   2 -- you're careful.
   3
   4 -- files that come with LÖVE; we can't edit those from within the app
   5 utf8 = require 'utf8'
   6
   7 function load_file_from_source_or_save_directory(filename)
   8   local contents = love.filesystem.read(filename)
   9   local code, err = loadstring(contents, filename)
  10   if code == nil then
  11     error(err)
  12   end
  13   return code()
  14 end
  15
  16 json = load_file_from_source_or_save_directory('json.lua')
  17
  18 load_file_from_source_or_save_directory('app.lua')
  19 load_file_from_source_or_save_directory('test.lua')
  20
  21 load_file_from_source_or_save_directory('keychord.lua')
  22 load_file_from_source_or_save_directory('button.lua')
  23
  24 -- both sides require (different parts of) the logging framework
  25 load_file_from_source_or_save_directory('log.lua')
  26
  27 -- both sides use drawings
  28 load_file_from_source_or_save_directory('icons.lua')
  29 load_file_from_source_or_save_directory('drawing.lua')
  30   load_file_from_source_or_save_directory('geom.lua')
  31   load_file_from_source_or_save_directory('help.lua')
  32 load_file_from_source_or_save_directory('drawing_tests.lua')
  33
  34 -- but some files we want to only load sometimes
  35 function App.load()
  36   log_new('session')
  37   if love.filesystem.getInfo('config') then
  38     Settings = json.decode(love.filesystem.read('config'))
  39     Current_app = Settings.current_app
  40   end
  41
  42   if Current_app == nil then
  43     Current_app = 'run'
  44   end
  45
  46   if Current_app == 'run' then
  47     load_file_from_source_or_save_directory('file.lua')
  48     load_file_from_source_or_save_directory('run.lua')
  49       load_file_from_source_or_save_directory('edit.lua')
  50       load_file_from_source_or_save_directory('text.lua')
  51         load_file_from_source_or_save_directory('search.lua')
  52         load_file_from_source_or_save_directory('select.lua')
  53         load_file_from_source_or_save_directory('undo.lua')
  54       load_file_from_source_or_save_directory('text_tests.lua')
  55     load_file_from_source_or_save_directory('run_tests.lua')
  56   elseif Current_app == 'source' then
  57     load_file_from_source_or_save_directory('source_file.lua')
  58     load_file_from_source_or_save_directory('source.lua')
  59       load_file_from_source_or_save_directory('commands.lua')
  60       load_file_from_source_or_save_directory('source_edit.lua')
  61       load_file_from_source_or_save_directory('log_browser.lua')
  62       load_file_from_source_or_save_directory('source_text.lua')
  63         load_file_from_source_or_save_directory('search.lua')
  64         load_file_from_source_or_save_directory('source_select.lua')
  65         load_file_from_source_or_save_directory('source_undo.lua')
  66         load_file_from_source_or_save_directory('colorize.lua')
  67       load_file_from_source_or_save_directory('source_text_tests.lua')
  68     load_file_from_source_or_save_directory('source_tests.lua')
  69   else
  70     assert(false, 'unknown app "'..Current_app..'"')
  71   end
  72 end
  73
  74 function App.initialize_globals()
  75   if Current_app == 'run' then
  76     run.initialize_globals()
  77   elseif Current_app == 'source' then
  78     source.initialize_globals()
  79   else
  80     assert(false, 'unknown app "'..Current_app..'"')
  81   end
  82
  83   -- for hysteresis in a few places
  84   Current_time = 0
  85   Last_focus_time = 0  -- https://love2d.org/forums/viewtopic.php?p=249700
  86   Last_resize_time = 0
  87 end
  88
  89 function App.initialize(arg)
  90   if Current_app == 'run' then
  91     run.initialize(arg)
  92   elseif Current_app == 'source' then
  93     source.initialize(arg)
  94   else
  95     assert(false, 'unknown app "'..Current_app..'"')
  96   end
  97 end
  98
  99 function App.resize(w,h)
 100   if Current_app == 'run' then
 101     if run.resize then run.resize(w,h) end
 102   elseif Current_app == 'source' then
 103     if source.resize then source.resize(w,h) end
 104   else
 105     assert(false, 'unknown app "'..Current_app..'"')
 106   end
 107   Last_resize_time = Current_time
 108 end
 109
 110 function App.filedropped(file)
 111   if Current_app == 'run' then
 112     if run.file_drop then run.file_drop(file) end
 113   elseif Current_app == 'source' then
 114     if source.file_drop then source.file_drop(file) end
 115   else
 116     assert(false, 'unknown app "'..Current_app..'"')
 117   end
 118 end
 119
 120 function App.focus(in_focus)
 121   if in_focus then
 122     Last_focus_time = Current_time
 123   end
 124   if Current_app == 'run' then
 125     if run.focus then run.focus(in_focus) end
 126   elseif Current_app == 'source' then
 127     if source.focus then source.focus(in_focus) end
 128   else
 129     assert(false, 'unknown app "'..Current_app..'"')
 130   end
 131 end
 132
 133 function App.draw()
 134   if Current_app == 'run' then
 135     run.draw()
 136   elseif Current_app == 'source' then
 137     source.draw()
 138   else
 139     assert(false, 'unknown app "'..Current_app..'"')
 140   end
 141 end
 142
 143 function App.update(dt)
 144   Current_time = Current_time + dt
 145   -- some hysteresis while resizing
 146   if Current_time < Last_resize_time + 0.1 then
 147     return
 148   end
 149   --
 150   if Current_app == 'run' then
 151     run.update(dt)
 152   elseif Current_app == 'source' then
 153     source.update(dt)
 154   else
 155     assert(false, 'unknown app "'..Current_app..'"')
 156   end
 157 end
 158
 159 function App.keychord_press(chord, key)
 160   -- ignore events for some time after window in focus (mostly alt-tab)
 161   if Current_time < Last_focus_time + 0.01 then
 162     return
 163   end
 164   --
 165   if chord == 'C-e' then
 166     -- carefully save settings
 167     if Current_app == 'run' then
 168       local source_settings = Settings.source
 169       Settings = run.settings()
 170       Settings.source = source_settings
 171       if run.quit then run.quit() end
 172       Current_app = 'source'
 173     elseif Current_app == 'source' then
 174       Settings.source = source.settings()
 175       if source.quit then source.quit() end
 176       Current_app = 'run'
 177     else
 178       assert(false, 'unknown app "'..Current_app..'"')
 179     end
 180     Settings.current_app = Current_app
 181     love.filesystem.write('config', json.encode(Settings))
 182     -- reboot
 183     load_file_from_source_or_save_directory('main.lua')
 184     App.undo_initialize()
 185     App.run_tests_and_initialize()
 186     return
 187   end
 188   if Current_app == 'run' then
 189     if run.keychord_press then run.keychord_press(chord, key) end
 190   elseif Current_app == 'source' then
 191     if source.keychord_press then source.keychord_press(chord, key) end
 192   else
 193     assert(false, 'unknown app "'..Current_app..'"')
 194   end
 195 end
 196
 197 function App.textinput(t)
 198   -- ignore events for some time after window in focus (mostly alt-tab)
 199   if Current_time < Last_focus_time + 0.01 then
 200     return
 201   end
 202   --
 203   if Current_app == 'run' then
 204     if run.text_input then run.text_input(t) end
 205   elseif Current_app == 'source' then
 206     if source.text_input then source.text_input(t) end
 207   else
 208     assert(false, 'unknown app "'..Current_app..'"')
 209   end
 210 end
 211
 212 function App.keyreleased(chord, key)
 213   -- ignore events for some time after window in focus (mostly alt-tab)
 214   if Current_time < Last_focus_time + 0.01 then
 215     return
 216   end
 217   --
 218   if Current_app == 'run' then
 219     if run.key_release then run.key_release(chord, key) end
 220   elseif Current_app == 'source' then
 221     if source.key_release then source.key_release(chord, key) end
 222   else
 223     assert(false, 'unknown app "'..Current_app..'"')
 224   end
 225 end
 226
 227 function App.mousepressed(x,y, mouse_button)
 228 --?   print('mouse press', x,y)
 229   if Current_app == 'run' then
 230     if run.mouse_pressed then run.mouse_press(x,y, mouse_button) end
 231   elseif Current_app == 'source' then
 232     if source.mouse_pressed then source.mouse_press(x,y, mouse_button) end
 233   else
 234     assert(false, 'unknown app "'..Current_app..'"')
 235   end
 236 end
 237
 238 function App.mousereleased(x,y, mouse_button)
 239   if Current_app == 'run' then
 240     if run.mouse_release then run.mouse_release(x,y, mouse_button) end
 241   elseif Current_app == 'source' then
 242     if source.mouse_release then source.mouse_release(x,y, mouse_button) end
 243   else
 244     assert(false, 'unknown app "'..Current_app..'"')
 245   end
 246 end
 247
 248 function love.quit()
 249   if Current_app == 'run' then
 250     local source_settings = Settings.source
 251     Settings = run.settings()
 252     Settings.source = source_settings
 253   else
 254     Settings.source = source.settings()
 255   end
 256   Settings.current_app = Current_app
 257   love.filesystem.write('config', json.encode(Settings))
 258   if Current_app == 'run' then
 259     if run.quit then run.quit() end
 260   elseif Current_app == 'source' then
 261     if source.quit then source.quit() end
 262   else
 263     assert(false, 'unknown app "'..Current_app..'"')
 264   end
 265 end