run.lua

   1 run = {}
   2
   3 Editor_state = {}
   4
   5 -- called both in tests and real run
   6 function run.initialize_globals()
   7   -- tests currently mostly clear their own state
   8
   9   -- blinking cursor
  10   Cursor_time = 0
  11 end
  12
  13 -- called only for real run
  14 function run.initialize(arg)
  15   log_new('run')
  16   if Settings then
  17     run.load_settings()
  18   else
  19     run.initialize_default_settings()
  20   end
  21
  22   if #arg > 0 and Editor_state.filename ~= absolutize(arg[1]) then
  23     Editor_state.filename = arg[1]
  24     load_from_disk(Editor_state)
  25     Text.redraw_all(Editor_state)
  26     Editor_state.screen_top1 = {line=1, pos=1}
  27     Editor_state.cursor1 = {line=1, pos=1}
  28   else
  29     load_from_disk(Editor_state)
  30     Text.redraw_all(Editor_state)
  31   end
  32   edit.check_locs(Editor_state)
  33
  34
  35
  36   -- keep a few blank lines around: https://merveilles.town/@akkartik/110084833821965708
  37   love.window.setTitle('lines.love - '..Editor_state.filename)
  38
  39
  40
  41   if #arg > 1 then
  42     print('ignoring commandline args after '..arg[1])
  43   end
  44
  45   if rawget(_G, 'jit') then
  46     jit.off()
  47     jit.flush()
  48   end
  49 end
  50
  51 function print_and_log(s)
  52   print(s)
  53   log(3, s)
  54 end
  55
  56 function run.load_settings()
  57   love.graphics.setFont(love.graphics.newFont(Settings.font_height))
  58   -- set up desired window dimensions and make window resizable
  59   _, _, App.screen.flags = App.screen.size()
  60   App.screen.flags.resizable = true
  61   App.screen.width, App.screen.height = Settings.width, Settings.height
  62   App.screen.resize(App.screen.width, App.screen.height, App.screen.flags)
  63   run.set_window_position_from_settings(Settings)
  64   Editor_state = edit.initialize_state(Margin_top, Margin_left, App.screen.width-Margin_right, Settings.font_height, math.floor(Settings.font_height*1.3))
  65   Editor_state.filename = Settings.filename
  66   Editor_state.screen_top1 = Settings.screen_top
  67   Editor_state.cursor1 = Settings.cursor
  68 end
  69
  70 function run.set_window_position_from_settings(settings)
  71   local os = love.system.getOS()
  72   if os == 'Linux' then
  73     -- love.window.setPosition doesn't quite seem to do what is asked of it on Linux.
  74     App.screen.move(settings.x, settings.y-37, settings.displayindex)
  75   else
  76     App.screen.move(settings.x, settings.y, settings.displayindex)
  77   end
  78 end
  79
  80 function run.initialize_default_settings()
  81   local font_height = 20
  82   love.graphics.setFont(love.graphics.newFont(font_height))
  83   run.initialize_window_geometry()
  84   Editor_state = edit.initialize_state(Margin_top, Margin_left, App.screen.width-Margin_right)
  85   Editor_state.font_height = font_height
  86   Editor_state.line_height = math.floor(font_height*1.3)
  87   Settings = run.settings()
  88 end
  89
  90 function run.initialize_window_geometry()
  91   -- Initialize window width/height and make window resizable.
  92   --
  93   -- I get tempted to have opinions about window dimensions here, but they're
  94   -- non-portable:
  95   --  - maximizing doesn't work on mobile and messes things up
  96   --  - maximizing keeps the title bar on screen in Linux, but off screen on
  97   --    Windows. And there's no way to get the height of the title bar.
  98   -- It seems more robust to just follow LÖVE's default window size until
  99   -- someone overrides it.
 100   App.screen.width, App.screen.height, App.screen.flags = App.screen.size()
 101   App.screen.flags.resizable = true
 102   App.screen.resize(App.screen.width, App.screen.height, App.screen.flags)
 103 end
 104
 105 function run.resize(w, h)
 106 --?   print(("Window resized to width: %d and height: %d."):format(w, h))
 107   App.screen.width, App.screen.height = w, h
 108   Text.redraw_all(Editor_state)
 109   Editor_state.selection1 = {}  -- no support for shift drag while we're resizing
 110   Editor_state.right = App.screen.width-Margin_right
 111   Editor_state.width = Editor_state.right-Editor_state.left
 112   Text.tweak_screen_top_and_cursor(Editor_state, Editor_state.left, Editor_state.right)
 113 end
 114
 115 function run.file_drop(file)
 116   -- first make sure to save edits on any existing file
 117   if Editor_state.next_save then
 118     save_to_disk(Editor_state)
 119   end
 120   -- clear the slate for the new file
 121   App.initialize_globals()
 122   Editor_state.filename = file:getFilename()
 123   file:open('r')
 124   Editor_state.lines = load_from_file(file)
 125   file:close()
 126   Text.redraw_all(Editor_state)
 127   Editor_state.screen_top1 = {line=1, pos=1}
 128   Editor_state.cursor1 = {line=1, pos=1}
 129
 130
 131
 132   -- keep a few blank lines around: https://merveilles.town/@akkartik/110084833821965708
 133   love.window.setTitle('lines.love - '..Editor_state.filename)
 134
 135
 136
 137 end
 138
 139 function run.draw()
 140   edit.draw(Editor_state)
 141 end
 142
 143 function run.update(dt)
 144   Cursor_time = Cursor_time + dt
 145   edit.update(Editor_state, dt)
 146 end
 147
 148 function run.quit()
 149   edit.quit(Editor_state)
 150 end
 151
 152 function run.settings()
 153   if Settings == nil then Settings = {} end
 154   Settings.x, Settings.y, Settings.displayindex = App.screen.position()
 155   return {
 156     x=Settings.x, y=Settings.y, displayindex=Settings.displayindex,
 157     width=App.screen.width, height=App.screen.height,
 158     font_height=Editor_state.font_height,
 159     filename=absolutize(Editor_state.filename),
 160     screen_top=Editor_state.screen_top1, cursor=Editor_state.cursor1
 161   }
 162 end
 163
 164 function absolutize(path)
 165   if is_relative_path(path) then
 166     return App.current_dir..path
 167   end
 168   return path
 169 end
 170
 171 function run.mouse_press(x,y, mouse_button)
 172   Cursor_time = 0  -- ensure cursor is visible immediately after it moves
 173   return edit.mouse_press(Editor_state, x,y, mouse_button)
 174 end
 175
 176 function run.mouse_release(x,y, mouse_button)
 177   Cursor_time = 0  -- ensure cursor is visible immediately after it moves
 178   return edit.mouse_release(Editor_state, x,y, mouse_button)
 179 end
 180
 181 function run.mouse_wheel_move(dx,dy)
 182   Cursor_time = 0  -- ensure cursor is visible immediately after it moves
 183   return edit.mouse_wheel_move(Editor_state, dx,dy)
 184 end
 185
 186 function run.text_input(t)
 187   Cursor_time = 0  -- ensure cursor is visible immediately after it moves
 188   return edit.text_input(Editor_state, t)
 189 end
 190
 191 function run.keychord_press(chord, key)
 192   Cursor_time = 0  -- ensure cursor is visible immediately after it moves
 193   return edit.keychord_press(Editor_state, chord, key)
 194 end
 195
 196 function run.key_release(key, scancode)
 197   Cursor_time = 0  -- ensure cursor is visible immediately after it moves
 198   return edit.key_release(Editor_state, key, scancode)
 199 end
 200
 201 function width(s)
 202   return love.graphics.getFont():getWidth(s)
 203 end