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   -- a few text objects we can avoid recomputing unless the font changes
  10   Text_cache = {}
  11
  12   -- blinking cursor
  13   Cursor_time = 0
  14 end
  15
  16 -- called only for real run
  17 function run.initialize(arg)
  18   log_new('run')
  19   if Settings then
  20     run.load_settings()
  21   else
  22     run.initialize_default_settings()
  23   end
  24
  25   if #arg > 0 then
  26     Editor_state.filename = arg[1]
  27     load_from_disk(Editor_state)
  28     Text.redraw_all(Editor_state)
  29     Editor_state.screen_top1 = {line=1, pos=1}
  30     Editor_state.cursor1 = {line=1, pos=1}
  31   else
  32     load_from_disk(Editor_state)
  33     Text.redraw_all(Editor_state)
  34   end
  35   edit.check_locs(Editor_state)
  36
  37
  38
  39   -- keep a few blank lines around: https://merveilles.town/@akkartik/110084833821965708
  40   love.window.setTitle('lines.love - '..Editor_state.filename)
  41
  42
  43
  44   if #arg > 1 then
  45     print('ignoring commandline args after '..arg[1])
  46   end
  47
  48   if rawget(_G, 'jit') then
  49     jit.off()
  50     jit.flush()
  51   end
  52 end
  53
  54 function run.load_settings()
  55   love.graphics.setFont(love.graphics.newFont(Settings.font_height))
  56   -- determine default dimensions and flags
  57   App.screen.width, App.screen.height, App.screen.flags = App.screen.size()
  58   -- set up desired window dimensions
  59   App.screen.flags.resizable = true
  60   App.screen.flags.minwidth = math.min(App.screen.width, 200)
  61   App.screen.flags.minheight = math.min(App.screen.height, 200)
  62   App.screen.width, App.screen.height = Settings.width, Settings.height
  63   App.screen.resize(App.screen.width, App.screen.height, App.screen.flags)
  64   App.screen.move(Settings.x, Settings.y, Settings.displayindex)
  65   Editor_state = edit.initialize_state(Margin_top, Margin_left, App.screen.width-Margin_right, Settings.font_height, math.floor(Settings.font_height*1.3))
  66   Editor_state.filename = Settings.filename
  67   Editor_state.screen_top1 = Settings.screen_top
  68   Editor_state.cursor1 = Settings.cursor
  69 end
  70
  71 function run.initialize_default_settings()
  72   local font_height = 20
  73   love.graphics.setFont(love.graphics.newFont(font_height))
  74   local em = App.newText(love.graphics.getFont(), 'm')
  75   run.initialize_window_geometry(App.width(em))
  76   Editor_state = edit.initialize_state(Margin_top, Margin_left, App.screen.width-Margin_right)
  77   Editor_state.font_height = font_height
  78   Editor_state.line_height = math.floor(font_height*1.3)
  79   Editor_state.em = em
  80   Settings = run.settings()
  81 end
  82
  83 function run.initialize_window_geometry(em_width)
  84   local os = love.system.getOS()
  85   if os == 'Android' or os == 'iOS' then
  86     -- maximizing on iOS breaks text rendering: https://github.com/deltadaedalus/vudu/issues/7
  87     -- no point second-guessing window dimensions on mobile
  88     App.screen.width, App.screen.height, App.screen.flags = App.screen.size()
  89     return
  90   end
  91   -- maximize window
  92   App.screen.resize(0, 0)  -- maximize
  93   App.screen.width, App.screen.height, App.screen.flags = App.screen.size()
  94   -- shrink height slightly to account for window decoration
  95   App.screen.height = App.screen.height-100
  96   App.screen.width = 40*em_width
  97   App.screen.flags.resizable = true
  98   App.screen.flags.minwidth = math.min(App.screen.width, 200)
  99   App.screen.flags.minheight = math.min(App.screen.height, 200)
 100   App.screen.resize(App.screen.width, App.screen.height, App.screen.flags)
 101 end
 102
 103 function run.resize(w, h)
 104 --?   print(("Window resized to width: %d and height: %d."):format(w, h))
 105   App.screen.width, App.screen.height = w, h
 106   Text.redraw_all(Editor_state)
 107   Editor_state.selection1 = {}  -- no support for shift drag while we're resizing
 108   Editor_state.right = App.screen.width-Margin_right
 109   Editor_state.width = Editor_state.right-Editor_state.left
 110   Text.tweak_screen_top_and_cursor(Editor_state, Editor_state.left, Editor_state.right)
 111 end
 112
 113 function run.file_drop(file)
 114   -- first make sure to save edits on any existing file
 115   if Editor_state.next_save then
 116     save_to_disk(Editor_state)
 117   end
 118   -- clear the slate for the new file
 119   App.initialize_globals()
 120   Editor_state.filename = file:getFilename()
 121   file:open('r')
 122   Editor_state.lines = load_from_file(file)
 123   file:close()
 124   Text.redraw_all(Editor_state)
 125   Editor_state.screen_top1 = {line=1, pos=1}
 126   Editor_state.cursor1 = {line=1, pos=1}
 127
 128
 129
 130   -- keep a few blank lines around: https://merveilles.town/@akkartik/110084833821965708
 131   love.window.setTitle('lines.love - '..Editor_state.filename)
 132
 133
 134
 135 end
 136
 137 function run.draw()
 138   edit.draw(Editor_state)
 139 end
 140
 141 function run.update(dt)
 142   Cursor_time = Cursor_time + dt
 143   edit.update(Editor_state, dt)
 144 end
 145
 146 function run.quit()
 147   edit.quit(Editor_state)
 148 end
 149
 150 function run.settings()
 151   if Settings == nil then
 152     Settings = {}
 153   end
 154   if Current_app == 'run' then
 155     Settings.x, Settings.y, Settings.displayindex = App.screen.position()
 156   end
 157   local filename = Editor_state.filename
 158   if is_relative_path(filename) then
 159     filename = love.filesystem.getWorkingDirectory()..'/'..filename  -- '/' should work even on Windows
 160   end
 161   return {
 162     x=Settings.x, y=Settings.y, displayindex=Settings.displayindex,
 163     width=App.screen.width, height=App.screen.height,
 164     font_height=Editor_state.font_height,
 165     filename=filename,
 166     screen_top=Editor_state.screen_top1, cursor=Editor_state.cursor1
 167   }
 168 end
 169
 170 function run.mouse_press(x,y, mouse_button)
 171   Cursor_time = 0  -- ensure cursor is visible immediately after it moves
 172   return edit.mouse_press(Editor_state, x,y, mouse_button)
 173 end
 174
 175 function run.mouse_release(x,y, mouse_button)
 176   Cursor_time = 0  -- ensure cursor is visible immediately after it moves
 177   return edit.mouse_release(Editor_state, x,y, mouse_button)
 178 end
 179
 180 function run.mouse_wheel_move(dx,dy)
 181   Cursor_time = 0  -- ensure cursor is visible immediately after it moves
 182   return edit.mouse_wheel_move(Editor_state, dx,dy)
 183 end
 184
 185 function run.text_input(t)
 186   Cursor_time = 0  -- ensure cursor is visible immediately after it moves
 187   return edit.text_input(Editor_state, t)
 188 end
 189
 190 function run.keychord_press(chord, key)
 191   Cursor_time = 0  -- ensure cursor is visible immediately after it moves
 192   return edit.keychord_press(Editor_state, chord, key)
 193 end
 194
 195 function run.key_release(key, scancode)
 196   Cursor_time = 0  -- ensure cursor is visible immediately after it moves
 197   return edit.key_release(Editor_state, key, scancode)
 198 end
 199
 200 -- use this sparingly
 201 function to_text(s)
 202   if Text_cache[s] == nil then
 203     Text_cache[s] = App.newText(love.graphics.getFont(), s)
 204   end
 205   return Text_cache[s]
 206 end