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     edit.fixup_cursor(Editor_state)
  32   else
  33     load_from_disk(Editor_state)
  34     Text.redraw_all(Editor_state)
  35     if Editor_state.cursor1.line > #Editor_state.lines or Editor_state.lines[Editor_state.cursor1.line].mode ~= 'text' then
  36       edit.fixup_cursor(Editor_state)
  37     end
  38   end
  39   love.window.setTitle('lines.love - '..Editor_state.filename)
  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 run.load_settings()
  52   love.graphics.setFont(love.graphics.newFont(Settings.font_height))
  53   -- determine default dimensions and flags
  54   App.screen.width, App.screen.height, App.screen.flags = love.window.getMode()
  55   -- set up desired window dimensions
  56   App.screen.flags.resizable = true
  57   App.screen.flags.minwidth = math.min(App.screen.width, 200)
  58   App.screen.flags.minheight = math.min(App.screen.height, 200)
  59   App.screen.width, App.screen.height = Settings.width, Settings.height
  60   love.window.setMode(App.screen.width, App.screen.height, App.screen.flags)
  61   love.window.setPosition(Settings.x, Settings.y, Settings.displayindex)
  62   Editor_state = edit.initialize_state(Margin_top, Margin_left, App.screen.width-Margin_right, Settings.font_height, math.floor(Settings.font_height*1.3))
  63   Editor_state.filename = Settings.filename
  64   Editor_state.screen_top1 = Settings.screen_top
  65   Editor_state.cursor1 = Settings.cursor
  66 end
  67
  68 function run.initialize_default_settings()
  69   local font_height = 20
  70   love.graphics.setFont(love.graphics.newFont(font_height))
  71   local em = App.newText(love.graphics.getFont(), 'm')
  72   run.initialize_window_geometry(App.width(em))
  73   Editor_state = edit.initialize_state(Margin_top, Margin_left, App.screen.width-Margin_right)
  74   Editor_state.font_height = font_height
  75   Editor_state.line_height = math.floor(font_height*1.3)
  76   Editor_state.em = em
  77   Settings = run.settings()
  78 end
  79
  80 function run.initialize_window_geometry(em_width)
  81   -- maximize window
  82   love.window.setMode(0, 0)  -- maximize
  83   App.screen.width, App.screen.height, App.screen.flags = love.window.getMode()
  84   -- shrink height slightly to account for window decoration
  85   App.screen.height = App.screen.height-100
  86   App.screen.width = 40*em_width
  87   App.screen.flags.resizable = true
  88   App.screen.flags.minwidth = math.min(App.screen.width, 200)
  89   App.screen.flags.minheight = math.min(App.screen.height, 200)
  90   love.window.setMode(App.screen.width, App.screen.height, App.screen.flags)
  91 end
  92
  93 function run.resize(w, h)
  94 --?   print(("Window resized to width: %d and height: %d."):format(w, h))
  95   App.screen.width, App.screen.height = w, h
  96   Text.redraw_all(Editor_state)
  97   Editor_state.selection1 = {}  -- no support for shift drag while we're resizing
  98   Editor_state.right = App.screen.width-Margin_right
  99   Editor_state.width = Editor_state.right-Editor_state.left
 100   Text.tweak_screen_top_and_cursor(Editor_state, Editor_state.left, Editor_state.right)
 101 end
 102
 103 function run.file_drop(file)
 104   -- first make sure to save edits on any existing file
 105   if Editor_state.next_save then
 106     save_to_disk(Editor_state)
 107   end
 108   -- clear the slate for the new file
 109   App.initialize_globals()
 110   Editor_state.filename = file:getFilename()
 111   file:open('r')
 112   Editor_state.lines = load_from_file(file)
 113   file:close()
 114   Text.redraw_all(Editor_state)
 115   edit.fixup_cursor(Editor_state)
 116   love.window.setTitle('lines.love - '..Editor_state.filename)
 117 end
 118
 119 function run.draw()
 120   edit.draw(Editor_state)
 121 end
 122
 123 function run.update(dt)
 124   Cursor_time = Cursor_time + dt
 125   edit.update(Editor_state, dt)
 126 end
 127
 128 function run.quit()
 129   edit.quit(Editor_state)
 130 end
 131
 132 function run.settings()
 133   if Settings == nil then
 134     Settings = {}
 135   end
 136   if Current_app == 'run' then
 137     Settings.x, Settings.y, Settings.displayindex = love.window.getPosition()
 138   end
 139   local filename = Editor_state.filename
 140   if is_relative_path(filename) then
 141     filename = love.filesystem.getWorkingDirectory()..'/'..filename  -- '/' should work even on Windows
 142   end
 143   return {
 144     x=Settings.x, y=Settings.y, displayindex=Settings.displayindex,
 145     width=App.screen.width, height=App.screen.height,
 146     font_height=Editor_state.font_height,
 147     filename=filename,
 148     screen_top=Editor_state.screen_top1, cursor=Editor_state.cursor1
 149   }
 150 end
 151
 152 function run.mouse_press(x,y, mouse_button)
 153   Cursor_time = 0  -- ensure cursor is visible immediately after it moves
 154   return edit.mouse_press(Editor_state, x,y, mouse_button)
 155 end
 156
 157 function run.mouse_release(x,y, mouse_button)
 158   Cursor_time = 0  -- ensure cursor is visible immediately after it moves
 159   return edit.mouse_release(Editor_state, x,y, mouse_button)
 160 end
 161
 162 function run.text_input(t)
 163   Cursor_time = 0  -- ensure cursor is visible immediately after it moves
 164   return edit.text_input(Editor_state, t)
 165 end
 166
 167 function run.keychord_press(chord, key)
 168   Cursor_time = 0  -- ensure cursor is visible immediately after it moves
 169   return edit.keychord_press(Editor_state, chord, key)
 170 end
 171
 172 function run.key_release(key, scancode)
 173   Cursor_time = 0  -- ensure cursor is visible immediately after it moves
 174   return edit.key_release(Editor_state, key, scancode)
 175 end
 176
 177 -- use this sparingly
 178 function to_text(s)
 179   if Text_cache[s] == nil then
 180     Text_cache[s] = App.newText(love.graphics.getFont(), s)
 181   end
 182   return Text_cache[s]
 183 end