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   love.keyboard.setTextInput(true)  -- bring up keyboard on touch screen
  91   love.keyboard.setKeyRepeat(true)
  92
  93   love.graphics.setBackgroundColor(1,1,1)
  94
  95   if Current_app == 'run' then
  96     run.initialize(arg)
  97   elseif Current_app == 'source' then
  98     source.initialize(arg)
  99   else
 100     assert(false, 'unknown app "'..Current_app..'"')
 101   end
 102 end
 103
 104 function App.resize(w,h)
 105   if Current_app == 'run' then
 106     if run.resize then run.resize(w,h) end
 107   elseif Current_app == 'source' then
 108     if source.resize then source.resize(w,h) end
 109   else
 110     assert(false, 'unknown app "'..Current_app..'"')
 111   end
 112   Last_resize_time = Current_time
 113 end
 114
 115 function App.filedropped(file)
 116   if Current_app == 'run' then
 117     if run.file_drop then run.file_drop(file) end
 118   elseif Current_app == 'source' then
 119     if source.file_drop then source.file_drop(file) end
 120   else
 121     assert(false, 'unknown app "'..Current_app..'"')
 122   end
 123 end
 124
 125 function App.focus(in_focus)
 126   if in_focus then
 127     Last_focus_time = Current_time
 128   end
 129   if Current_app == 'run' then
 130     if run.focus then run.focus(in_focus) end
 131   elseif Current_app == 'source' then
 132     if source.focus then source.focus(in_focus) end
 133   else
 134     assert(false, 'unknown app "'..Current_app..'"')
 135   end
 136 end
 137
 138 function App.draw()
 139   if Current_app == 'run' then
 140     run.draw()
 141   elseif Current_app == 'source' then
 142     source.draw()
 143   else
 144     assert(false, 'unknown app "'..Current_app..'"')
 145   end
 146 end
 147
 148 function App.update(dt)
 149   Current_time = Current_time + dt
 150   -- some hysteresis while resizing
 151   if Current_time < Last_resize_time + 0.1 then
 152     return
 153   end
 154   --
 155   if Current_app == 'run' then
 156     run.update(dt)
 157   elseif Current_app == 'source' then
 158     source.update(dt)
 159   else
 160     assert(false, 'unknown app "'..Current_app..'"')
 161   end
 162 end
 163
 164 function App.keychord_press(chord, key)
 165   -- ignore events for some time after window in focus (mostly alt-tab)
 166   if Current_time < Last_focus_time + 0.01 then
 167     return
 168   end
 169   --
 170   if chord == 'C-e' then
 171     -- carefully save settings
 172     if Current_app == 'run' then
 173       local source_settings = Settings.source
 174       Settings = run.settings()
 175       Settings.source = source_settings
 176       if run.quit then run.quit() end
 177       Current_app = 'source'
 178     elseif Current_app == 'source' then
 179       Settings.source = source.settings()
 180       if source.quit then source.quit() end
 181       Current_app = 'run'
 182     else
 183       assert(false, 'unknown app "'..Current_app..'"')
 184     end
 185     Settings.current_app = Current_app
 186     love.filesystem.write('config', json.encode(Settings))
 187     -- reboot
 188     load_file_from_source_or_save_directory('main.lua')
 189     App.undo_initialize()
 190     App.run_tests_and_initialize()
 191     return
 192   end
 193   if Current_app == 'run' then
 194     if run.keychord_press then run.keychord_press(chord, key) end
 195   elseif Current_app == 'source' then
 196     if source.keychord_press then source.keychord_press(chord, key) end
 197   else
 198     assert(false, 'unknown app "'..Current_app..'"')
 199   end
 200 end
 201
 202 function App.textinput(t)
 203   -- ignore events for some time after window in focus (mostly alt-tab)
 204   if Current_time < Last_focus_time + 0.01 then
 205     return
 206   end
 207   --
 208   if Current_app == 'run' then
 209     if run.text_input then run.text_input(t) end
 210   elseif Current_app == 'source' then
 211     if source.text_input then source.text_input(t) end
 212   else
 213     assert(false, 'unknown app "'..Current_app..'"')
 214   end
 215 end
 216
 217 function App.keyreleased(key, scancode)
 218   -- ignore events for some time after window in focus (mostly alt-tab)
 219   if Current_time < Last_focus_time + 0.01 then
 220     return
 221   end
 222   --
 223   if Current_app == 'run' then
 224     if run.key_release then run.key_release(key, scancode) end
 225   elseif Current_app == 'source' then
 226     if source.key_release then source.key_release(key, scancode) end
 227   else
 228     assert(false, 'unknown app "'..Current_app..'"')
 229   end
 230 end
 231
 232 function App.mousepressed(x,y, mouse_button)
 233 --?   print('mouse press', x,y)
 234   if Current_app == 'run' then
 235     if run.mouse_press then run.mouse_press(x,y, mouse_button) end
 236   elseif Current_app == 'source' then
 237     if source.mouse_press then source.mouse_press(x,y, mouse_button) end
 238   else
 239     assert(false, 'unknown app "'..Current_app..'"')
 240   end
 241 end
 242
 243 function App.mousereleased(x,y, mouse_button)
 244   if Current_app == 'run' then
 245     if run.mouse_release then run.mouse_release(x,y, mouse_button) end
 246   elseif Current_app == 'source' then
 247     if source.mouse_release then source.mouse_release(x,y, mouse_button) end
 248   else
 249     assert(false, 'unknown app "'..Current_app..'"')
 250   end
 251 end
 252
 253 function App.wheelmoved(dx,dy)
 254   if Current_app == 'run' then
 255     if run.mouse_wheel_move then run.mouse_wheel_move(dx,dy) end
 256   elseif Current_app == 'source' then
 257     if source.mouse_wheel_move then source.mouse_wheel_move(dx,dy) end
 258   else
 259     assert(false, 'unknown app "'..Current_app..'"')
 260   end
 261 end
 262
 263 function love.quit()
 264   if Current_app == 'run' then
 265     local source_settings = Settings.source
 266     Settings = run.settings()
 267     Settings.source = source_settings
 268   else
 269     Settings.source = source.settings()
 270   end
 271   Settings.current_app = Current_app
 272   love.filesystem.write('config', json.encode(Settings))
 273   if Current_app == 'run' then
 274     if run.quit then run.quit() end
 275   elseif Current_app == 'source' then
 276     if source.quit then source.quit() end
 277   else
 278     assert(false, 'unknown app "'..Current_app..'"')
 279   end
 280 end