help.lua

   1 function draw_help_without_mouse_pressed(State, drawing_index)
   2   local drawing = State.lines[drawing_index]
   3   local line_cache = State.line_cache[drawing_index]
   4   App.color(Help_color)
   5   local y = line_cache.starty+10
   6   love.graphics.print("Things you can do:", State.left+30,y)
   7   y = y + State.line_height
   8   love.graphics.print("* Press the mouse button to start drawing a "..current_shape(State), State.left+30,y)
   9   y = y + State.line_height
  10   love.graphics.print("* Hover on a point and press 'ctrl+u' to pick it up and start moving it,", State.left+30,y)
  11   y = y + State.line_height
  12   love.graphics.print("then press the mouse button to drop it", State.left+30+bullet_indent(),y)
  13   y = y + State.line_height
  14   love.graphics.print("* Hover on a point and press 'ctrl+n', type a name, then press 'enter'", State.left+30,y)
  15   y = y + State.line_height
  16   love.graphics.print("* Hover on a point or shape and press 'ctrl+d' to delete it", State.left+30,y)
  17   y = y + State.line_height
  18   if State.current_drawing_mode ~= 'freehand' then
  19     love.graphics.print("* Press 'ctrl+p' to switch to drawing freehand strokes", State.left+30,y)
  20     y = y + State.line_height
  21   end
  22   if State.current_drawing_mode ~= 'line' then
  23     love.graphics.print("* Press 'ctrl+l' to switch to drawing lines", State.left+30,y)
  24     y = y + State.line_height
  25   end
  26   if State.current_drawing_mode ~= 'manhattan' then
  27     love.graphics.print("* Press 'ctrl+m' to switch to drawing horizontal/vertical lines", State.left+30,y)
  28     y = y + State.line_height
  29   end
  30   if State.current_drawing_mode ~= 'circle' then
  31     love.graphics.print("* Press 'ctrl+o' to switch to drawing circles/arcs", State.left+30,y)
  32     y = y + State.line_height
  33   end
  34   if State.current_drawing_mode ~= 'polygon' then
  35     love.graphics.print("* Press 'ctrl+g' to switch to drawing polygons", State.left+30,y)
  36     y = y + State.line_height
  37   end
  38   if State.current_drawing_mode ~= 'rectangle' then
  39     love.graphics.print("* Press 'ctrl+r' to switch to drawing rectangles", State.left+30,y)
  40     y = y + State.line_height
  41   end
  42   if State.current_drawing_mode ~= 'square' then
  43     love.graphics.print("* Press 'ctrl+s' to switch to drawing squares", State.left+30,y)
  44     y = y + State.line_height
  45   end
  46   love.graphics.print("* Press 'ctrl+=' or 'ctrl+-' to zoom in or out, ctrl+0 to reset zoom", State.left+30,y)
  47   y = y + State.line_height
  48   love.graphics.print("Press 'esc' now to hide this message", State.left+30,y)
  49   y = y + State.line_height
  50   App.color(Help_background_color)
  51   love.graphics.rectangle('fill', State.left,line_cache.starty, State.width, math.max(Drawing.pixels(drawing.h, State.width),y-line_cache.starty))
  52 end
  53
  54 function draw_help_with_mouse_pressed(State, drawing_index)
  55   local drawing = State.lines[drawing_index]
  56   local line_cache = State.line_cache[drawing_index]
  57   App.color(Help_color)
  58   local y = line_cache.starty+10
  59   love.graphics.print("You're currently drawing a "..current_shape(State, drawing.pending), State.left+30,y)
  60   y = y + State.line_height
  61   love.graphics.print('Things you can do now:', State.left+30,y)
  62   y = y + State.line_height
  63   if State.current_drawing_mode == 'freehand' then
  64     love.graphics.print('* Release the mouse button to finish drawing the stroke', State.left+30,y)
  65     y = y + State.line_height
  66   elseif State.current_drawing_mode == 'line' or State.current_drawing_mode == 'manhattan' then
  67     love.graphics.print('* Release the mouse button to finish drawing the line', State.left+30,y)
  68     y = y + State.line_height
  69   elseif State.current_drawing_mode == 'circle' then
  70     if drawing.pending.mode == 'circle' then
  71       love.graphics.print('* Release the mouse button to finish drawing the circle', State.left+30,y)
  72       y = y + State.line_height
  73       love.graphics.print("* Press 'a' to draw just an arc of a circle", State.left+30,y)
  74     else
  75       love.graphics.print('* Release the mouse button to finish drawing the arc', State.left+30,y)
  76     end
  77     y = y + State.line_height
  78   elseif State.current_drawing_mode == 'polygon' then
  79     love.graphics.print('* Release the mouse button to finish drawing the polygon', State.left+30,y)
  80     y = y + State.line_height
  81     love.graphics.print("* Press 'p' to add a vertex to the polygon", State.left+30,y)
  82     y = y + State.line_height
  83   elseif State.current_drawing_mode == 'rectangle' then
  84     if #drawing.pending.vertices < 2 then
  85       love.graphics.print("* Press 'p' to add a vertex to the rectangle", State.left+30,y)
  86       y = y + State.line_height
  87     else
  88       love.graphics.print('* Release the mouse button to finish drawing the rectangle', State.left+30,y)
  89       y = y + State.line_height
  90       love.graphics.print("* Press 'p' to replace the second vertex of the rectangle", State.left+30,y)
  91       y = y + State.line_height
  92     end
  93   elseif State.current_drawing_mode == 'square' then
  94     if #drawing.pending.vertices < 2 then
  95       love.graphics.print("* Press 'p' to add a vertex to the square", State.left+30,y)
  96       y = y + State.line_height
  97     else
  98       love.graphics.print('* Release the mouse button to finish drawing the square', State.left+30,y)
  99       y = y + State.line_height
 100       love.graphics.print("* Press 'p' to replace the second vertex of the square", State.left+30,y)
 101       y = y + State.line_height
 102     end
 103   end
 104   love.graphics.print("* Press 'esc' then release the mouse button to cancel the current shape", State.left+30,y)
 105   y = y + State.line_height
 106   y = y + State.line_height
 107   if State.current_drawing_mode ~= 'line' then
 108     love.graphics.print("* Press 'l' to switch to drawing lines", State.left+30,y)
 109     y = y + State.line_height
 110   end
 111   if State.current_drawing_mode ~= 'manhattan' then
 112     love.graphics.print("* Press 'm' to switch to drawing horizontal/vertical lines", State.left+30,y)
 113     y = y + State.line_height
 114   end
 115   if State.current_drawing_mode ~= 'circle' then
 116     love.graphics.print("* Press 'o' to switch to drawing circles/arcs", State.left+30,y)
 117     y = y + State.line_height
 118   end
 119   if State.current_drawing_mode ~= 'polygon' then
 120     love.graphics.print("* Press 'g' to switch to drawing polygons", State.left+30,y)
 121     y = y + State.line_height
 122   end
 123   if State.current_drawing_mode ~= 'rectangle' then
 124     love.graphics.print("* Press 'r' to switch to drawing rectangles", State.left+30,y)
 125     y = y + State.line_height
 126   end
 127   if State.current_drawing_mode ~= 'square' then
 128     love.graphics.print("* Press 's' to switch to drawing squares", State.left+30,y)
 129     y = y + State.line_height
 130   end
 131   App.color(Help_background_color)
 132   love.graphics.rectangle('fill', State.left,line_cache.starty, State.width, math.max(Drawing.pixels(drawing.h, State.width),y-line_cache.starty))
 133 end
 134
 135 function current_shape(State, shape)
 136   if State.current_drawing_mode == 'freehand' then
 137     return 'freehand stroke'
 138   elseif State.current_drawing_mode == 'line' then
 139     return 'straight line'
 140   elseif State.current_drawing_mode == 'manhattan' then
 141     return 'horizontal/vertical line'
 142   elseif State.current_drawing_mode == 'circle' and shape and shape.start_angle then
 143     return 'arc'
 144   else
 145     return State.current_drawing_mode
 146   end
 147 end
 148
 149 _bullet_indent = nil
 150 function bullet_indent()
 151   if _bullet_indent == nil then
 152     local text = love.graphics.newText(love.graphics.getFont(), '* ')
 153     _bullet_indent = text:getWidth()
 154   end
 155   return _bullet_indent
 156 end