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$define Win_Size 1500
$define BG "white"
$define FG "black"
$define COLOR_LIST ["yellow", "blue", "green", "red", "orange", "brown", "gray", "purple", "pink"]
# set the default for DrawTree_Box_R
procedure drawtree_box_default(fg, bg)
local draw_record
draw_record := DrawTree_Box_R()
draw_record.win_width := Win_Size
draw_record.win_height := Win_Size - 200
if /fg then draw_record.fg := FG else draw_record.fg := fg
if /bg then draw_record.bg := BG else draw_record.bg := bg
draw_record.color_list := ["red", "blue", "green", "orange"]
draw_record.num_color := 4
draw_record.win := WOpen("canvas=hidden",
"size=" || draw_record.win_width || "," || draw_record.win_height,
"bg=" || draw_record.bg, "fg=" || draw_record.fg,
"dx=10", "dy=10")
draw_record.box_size := 20
draw_record.draw_box_size := 16
set_box_shape(draw_record)
draw_record.menu := ["background", format_box_cb, "total box size", format_box_cb, "visible box size", format_box_cb, "snapshot", format_box_cb]
return draw_record
end
procedure set_box_shape(draw_record)
local y_num, x_num, x, y
draw_record.grid_x := table()
draw_record.grid_y := table()
draw_record.grid_x_coor := table()
draw_record.grid_y_coor := table()
y_num := 0
x_num := 0
every y := 0 to draw_record.win_height by draw_record.box_size do {
draw_record.grid_y[y_num] := y
draw_record.grid_y_coor[y] := y_num
y_num +:= 1
}
every x := 0 to draw_record.win_width by draw_record.box_size do {
draw_record.grid_x[x_num] := x
draw_record.grid_x_coor[x] := x_num
x_num +:= 1
}
draw_record.y_num := y_num
draw_record.x_num := x_num
draw_record.x_start := table()
return
end
# draw the tree in a seperated with line between each node
procedure drawtree_box(draw_record, children)
local id, x, y
every id := 0 to children.num_children do {
if children.num_gen[id] == 0 then break
x := integer(((draw_record.x_num - children.num_gen[id]) / 2) + 1)
draw_record.x_start[id] := x
}
EraseArea(draw_record.win)
every id := 0 to children.num_children do {
y := children.all[id].generation
x := children.all[id].gen_id + draw_record.x_start[y]
DrawRectangle(draw_record.win,
draw_record.grid_x[x],
draw_record.grid_y[y],
draw_record.draw_box_size,
draw_record.draw_box_size)
}
end
# event handler
procedure event_handler_box(draw_record, children, event)
local x, y, gen, id, x_id
if event == &lpress then {
x := &x
y := &y
while /draw_record.grid_x_coor[x] do {
x -:= 1
if x == 0 then return fail
}
while /draw_record.grid_y_coor[y] do {
y -:= 1
if y == -1 then return fail
}
y := draw_record.grid_y_coor[y]
x := draw_record.grid_x_coor[x]
if /draw_record.x_start[y] then return fail
x_id := x - draw_record.x_start[y]
every id := 0 to children.num_children do {
if y == children.all[id].generation then
if x_id == children.all[id].gen_id then {
fill_boxes(draw_record, children, id, x, y)
break;
}
}
}
else if event == &mpress then {
y := &y
while /draw_record.grid_y_coor[y] do {
y -:= 1
if y == -1 then return fail
}
y := draw_record.grid_y_coor[y]
if /draw_record.x_start[y] then return fail
every id := 0 to children.num_children do {
if y == children.all[id].generation then {
x := children.all[id].gen_id + draw_record.x_start[y]
Fg(draw_record.win, COLOR_LIST[children.all[id].gen_id %
*COLOR_LIST + 1])
fill_boxes(draw_record, children, id, x, y)
}
}
Fg(draw_record.win, draw_record.fg)
}
else if event == &rpress then
drawtree_box(draw_record, children)
end
procedure fill_boxes(draw_record, children, child, x, y)
local id
FillRectangle(draw_record.win,
draw_record.grid_x[x],
draw_record.grid_y[y],
draw_record.draw_box_size,
draw_record.draw_box_size)
every id := !children.all[child].children_id do {
y := children.all[id].generation
x := children.all[id].gen_id + draw_record.x_start[y]
fill_boxes(draw_record, children, id, x, y)
}
end
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