commands.lua

   1 Menu_background_color = {r=0.6, g=0.8, b=0.6}
   2 Menu_border_color = {r=0.6, g=0.7, b=0.6}
   3 Menu_command_color = {r=0.2, g=0.2, b=0.2}
   4 Menu_highlight_color = {r=0.5, g=0.7, b=0.3}
   5
   6 function source.draw_menu_bar()
   7   if App.run_tests then return end  -- disable in tests
   8   App.color(Menu_background_color)
   9   love.graphics.rectangle('fill', 0,0, App.screen.width, Menu_status_bar_height)
  10   App.color(Menu_border_color)
  11   love.graphics.rectangle('line', 0,0, App.screen.width, Menu_status_bar_height)
  12   App.color(Menu_command_color)
  13   Menu_cursor = 5
  14   if Show_file_navigator then
  15     source.draw_file_navigator()
  16     return
  17   end
  18   add_hotkey_to_menu('ctrl+e: run')
  19   if Focus == 'edit' then
  20     add_hotkey_to_menu('ctrl+g: switch file')
  21     if Show_log_browser_side then
  22       add_hotkey_to_menu('ctrl+l: hide log browser')
  23     else
  24       add_hotkey_to_menu('ctrl+l: show log browser')
  25     end
  26     add_hotkey_to_menu('ctrl+k: clear logs')
  27     if Editor_state.expanded then
  28       add_hotkey_to_menu('alt+b: collapse debug prints')
  29     else
  30       add_hotkey_to_menu('alt+b: expand debug prints')
  31     end
  32     add_hotkey_to_menu('alt+d: create/edit debug print')
  33     add_hotkey_to_menu('ctrl+f: find in file')
  34     add_hotkey_to_menu('alt+left alt+right: prev/next word')
  35   elseif Focus == 'log_browser' then
  36     -- nothing yet
  37   else
  38     assert(false, 'unknown focus "'..Focus..'"')
  39   end
  40   add_hotkey_to_menu('ctrl+z ctrl+y: undo/redo')
  41   add_hotkey_to_menu('ctrl+x ctrl+c ctrl+v: cut/copy/paste')
  42   add_hotkey_to_menu('ctrl+= ctrl+- ctrl+0: zoom')
  43 end
  44
  45 function add_hotkey_to_menu(s)
  46   local width = App.width(s)
  47   if Menu_cursor > App.screen.width - 30 then
  48     return
  49   end
  50   App.color(Menu_command_color)
  51   App.screen.print(s, Menu_cursor,5)
  52   Menu_cursor = Menu_cursor + width + 30
  53 end
  54
  55 function source.draw_file_navigator()
  56   App.color(Menu_command_color)
  57   App.screen.print(File_navigation.filter, 5, 5)
  58   draw_cursor(5 + App.width(File_navigation.filter), 5)
  59   if File_navigation.num_lines == nil then
  60     File_navigation.num_lines = source.num_lines_for_file_navigator(File_navigation.candidates)
  61   end
  62   App.color(Menu_background_color)
  63   love.graphics.rectangle('fill', 0,Menu_status_bar_height, App.screen.width, File_navigation.num_lines * Editor_state.line_height + --[[highlight padding]] 2)
  64   local x,y = 5, Menu_status_bar_height
  65   for i,filename in ipairs(File_navigation.candidates) do
  66     x,y = add_file_to_menu(x,y, filename, i == File_navigation.index)
  67     if Menu_cursor >= App.screen.width - 5 then
  68       break
  69     end
  70   end
  71 end
  72
  73 function draw_cursor(x, y)
  74   -- blink every 0.5s
  75   if math.floor(Cursor_time*2)%2 == 0 then
  76     App.color(Cursor_color)
  77     love.graphics.rectangle('fill', x,y, 3,Editor_state.line_height)
  78   end
  79 end
  80
  81 function source.file_navigator_candidates()
  82   if File_navigation.filter == '' then
  83     return File_navigation.all_candidates
  84   end
  85   local result = {}
  86   for _,filename in ipairs(File_navigation.all_candidates) do
  87     if starts_with(filename, File_navigation.filter) then
  88       table.insert(result, filename)
  89     end
  90   end
  91   return result
  92 end
  93
  94 function source.num_lines_for_file_navigator(candidates)
  95   local result = 1
  96   local x = 5
  97   for i,filename in ipairs(candidates) do
  98     local width = App.width(filename)
  99     if x + width > App.screen.width - 5 then
 100       result = result+1
 101       x = 5 + width
 102     else
 103       x = x + width + 30
 104     end
 105   end
 106   return result
 107 end
 108
 109 function add_file_to_menu(x,y, s, cursor_highlight)
 110   local width = App.width(s)
 111   if x + width > App.screen.width - 5 then
 112     y = y + Editor_state.line_height
 113     x = 5
 114   end
 115   local color = Menu_background_color
 116   if cursor_highlight then
 117     color = Menu_highlight_color
 118   end
 119   button(Editor_state, 'menu', {x=x-5, y=y-2, w=width+5*2, h=Editor_state.line_height+2*2, bg=color,
 120     onpress1 = function()
 121       navigate_to_file(s)
 122     end
 123   })
 124   App.color(Menu_command_color)
 125   App.screen.print(s, x,y)
 126   x = x + width + 30
 127   return x,y
 128 end
 129
 130 function navigate_to_file(s)
 131   move_candidate_to_front(s)
 132   source.switch_to_file(s..'.lua')
 133   love.window.setTitle('lines.love - source - '..Editor_state.filename)
 134   reset_file_navigator()
 135 end
 136
 137 function move_candidate_to_front(s)
 138   local index = array.find(File_navigation.all_candidates, s)
 139   assert(index)
 140   table.remove(File_navigation.all_candidates, index)
 141   table.insert(File_navigation.all_candidates, 1, s)
 142 end
 143
 144 function reset_file_navigator()
 145   Show_file_navigator = false
 146   File_navigation.index = 1
 147   File_navigation.filter = ''
 148   File_navigation.candidates = File_navigation.all_candidates
 149 end
 150
 151 function keychord_press_on_file_navigator(chord, key)
 152   log(2, 'file navigator: '..chord)
 153   log(2, {name='file_navigator_state', files=File_navigation.candidates, index=File_navigation.index})
 154   if chord == 'escape' then
 155     reset_file_navigator()
 156   elseif chord == 'return' then
 157     navigate_to_file(File_navigation.candidates[File_navigation.index])
 158   elseif chord == 'backspace' then
 159     local len = utf8.len(File_navigation.filter)
 160     local byte_offset = Text.offset(File_navigation.filter, len)
 161     File_navigation.filter = string.sub(File_navigation.filter, 1, byte_offset-1)
 162     File_navigation.index = 1
 163     File_navigation.candidates = source.file_navigator_candidates()
 164   elseif chord == 'left' then
 165     if File_navigation.index > 1 then
 166       File_navigation.index = File_navigation.index-1
 167     end
 168   elseif chord == 'right' then
 169     if File_navigation.index < #File_navigation.candidates then
 170       File_navigation.index = File_navigation.index+1
 171     end
 172   elseif chord == 'down' then
 173     file_navigator_down()
 174   elseif chord == 'up' then
 175     file_navigator_up()
 176   end
 177 end
 178
 179 function log_render.file_navigator_state(o, x,y, w)
 180   -- duplicate structure of source.draw_file_navigator
 181   local num_lines = source.num_lines_for_file_navigator(o.files)
 182   local h = num_lines * Editor_state.line_height
 183   App.color(Menu_background_color)
 184   love.graphics.rectangle('fill', x,y, w,h)
 185   -- compute the x,y,width of the current index (in offsets from top left)
 186   local x2,y2 = 0,0
 187   local width = 0
 188   for i,filename in ipairs(o.files) do
 189     width = App.width(filename)
 190     if x2 + width > App.screen.width - 5 then
 191       y2 = y2 + Editor_state.line_height
 192       x2 = 0
 193     end
 194     if i == o.index then
 195       break
 196     end
 197     x2 = x2 + width + 30
 198   end
 199   -- figure out how much of the menu to display
 200   local menu_xmin = math.max(0, x2-w/2)
 201   local menu_xmax = math.min(App.screen.width, x2+w/2)
 202   -- now selectively print out entries
 203   local x3,y3 = 0,y  -- x3 is relative, y3 is absolute
 204   local width = 0
 205   for i,filename in ipairs(o.files) do
 206     width = App.width(filename)
 207     if x3 + width > App.screen.width - 5 then
 208       y3 = y3 + Editor_state.line_height
 209       x3 = 0
 210     end
 211     if i == o.index then
 212       App.color(Menu_highlight_color)
 213       love.graphics.rectangle('fill', x + x3-menu_xmin - 5, y3-2, width+5*2, Editor_state.line_height+2*2)
 214     end
 215     if x3 >= menu_xmin and x3 + width < menu_xmax then
 216       App.color(Menu_command_color)
 217       App.screen.print(filename, x + x3-menu_xmin, y3)
 218     end
 219     x3 = x3 + width + 30
 220   end
 221   --
 222   return h+20
 223 end
 224
 225 function file_navigator_up()
 226   local y, x, width = file_coord(File_navigation.index)
 227   local index = file_index(y-Editor_state.line_height, x, width)
 228   if index then
 229     File_navigation.index = index
 230   end
 231 end
 232
 233 function file_navigator_down()
 234   local y, x, width = file_coord(File_navigation.index)
 235   local index = file_index(y+Editor_state.line_height, x, width)
 236   if index then
 237     File_navigation.index = index
 238   end
 239 end
 240
 241 function file_coord(index)
 242   local y,x = Menu_status_bar_height, 5
 243   for i,filename in ipairs(File_navigation.candidates) do
 244     local width = App.width(filename)
 245     if x + width > App.screen.width - 5 then
 246       y = y + Editor_state.line_height
 247       x = 5
 248     end
 249     if i == index then
 250     return y, x, width
 251     end
 252     x = x + width + 30
 253   end
 254 end
 255
 256 function file_index(fy, fx, fwidth)
 257   log_start('file index')
 258   log(2, ('for %d %d %d'):format(fy, fx, fwidth))
 259   local y,x = Menu_status_bar_height, 5
 260   local best_guess, best_guess_x, best_guess_width
 261   for i,filename in ipairs(File_navigation.candidates) do
 262     local width = App.width(filename)
 263     if x + width > App.screen.width - 5 then
 264       y = y + Editor_state.line_height
 265       x = 5
 266     end
 267     if y == fy then
 268       log(2, ('%d: correct row; considering %d %s %d %d'):format(y, i, filename, x, width))
 269       if best_guess == nil then
 270         log(2, 'nil')
 271         best_guess = i
 272         best_guess_x = x
 273         best_guess_width = width
 274       elseif math.abs(fx + fwidth/2 - x - width/2) < math.abs(fx + fwidth/2 - best_guess_x - best_guess_width/2) then
 275         best_guess = i
 276         best_guess_x = x
 277         best_guess_width = width
 278       end
 279       log(2, ('best guess now %d %s %d %d'):format(best_guess, File_navigation.candidates[best_guess], best_guess_x, best_guess_width))
 280     end
 281     x = x + width + 30
 282   end
 283   log_end('file index')
 284   return best_guess
 285 end
 286
 287 function text_input_on_file_navigator(t)
 288   File_navigation.filter = File_navigation.filter..t
 289   File_navigation.candidates = source.file_navigator_candidates()
 290 end