plomlompom.com Git - plomrogue/blob - client/window_management.py

   1 import curses
   2 import types
   3
   4
   5 from client.config.windows import windows_config
   6
   7
   8 redraw_windows = False
   9 sep_size = 1  # Width of inter-window borders and title bars.
  10 windows = []
  11 stdscr = None
  12 screen_size = [0,0]
  13
  14
  15 class Window:
  16     def __init__(self, title, draw_function, size):
  17         self.title = title
  18         self.draw = types.MethodType(draw_function, self)
  19         self.size = size
  20
  21
  22 def set_windows():
  23
  24     def size_window(config):
  25         size = [0, 0]
  26         size[0] = config[0]
  27         if (config[0] == 0):
  28             size[0] = screen_size[0] - sep_size
  29         elif (config[0] < 0):
  30             size[0] = screen_size[0] + config[0] - sep_size
  31         size[1] = config[1]
  32         if (config[1] == 0):
  33             size[1] = screen_size[1]
  34         elif (config[1] < 0):
  35             size[1] = screen_size[1] + config[1]
  36         return size
  37
  38     def place_window(win):
  39         win_i = windows.index(win)
  40
  41         # If win is first window, it goes into the top left corner.
  42         win.start = [0 + sep_size, 0]
  43         if (win_i > 0):
  44
  45             # If not, get win's closest predecessor starting a new stack on the
  46             # screen top,fit win's top left to that win_top's top right corner.
  47             win_top = None
  48             for i in range(win_i - 1, -1, -1):
  49                 win_top = windows[i]
  50                 if (win_top.start[0] == 0 + sep_size):
  51                     break
  52             win.start[1] = win_top.start[1] + win_top.size[1] + sep_size
  53
  54             # If enough space is found below win's predecessor, fit win's top
  55             # left corner to that predecessor's bottom left corner.
  56             win_prev = windows[win_i - 1]
  57             next_free_y = win_prev.start[0] + win_prev.size[0] + sep_size
  58             if (win.size[1] <= win_prev.size[1] and
  59                     win.size[0] <= screen_size[0] - next_free_y):
  60                 win.start[1] = win_prev.start[1]
  61                 win.start[0] = next_free_y
  62
  63             # If that fails, try to fit win's top left corner to the top right
  64             # corner of its closest predecessor win_test 1) below win_top (see
  65             # above) 2) and with enough space open to its right between its
  66             # right edge and the lower edge of a win_high located directly
  67             # above win_test to fit win there (without growing further to the
  68             # right than win_high does or surpassing the screen's lower edge).
  69             else:
  70                 win_test = win_prev
  71                 win_high = None
  72                 while (win_test != win_top):
  73                     for i in range(win_i - 2, -1, -1):
  74                         win_high = windows[i]
  75                         if win_test.start[0] > win_high.start[0]:
  76                             break
  77                     next_free_y = win_high.start[0] + win_high.size[0] \
  78                         + sep_size
  79                     first_free_x = win_test.start[1] + win_test.size[1] \
  80                         + sep_size
  81                     last_free_x = win_high.start[1] + win_high.size[1]
  82                     if (win.size[0] <= screen_size[0] - next_free_y and
  83                             win.size[1] <= last_free_x - first_free_x):
  84                         win.start[1] = first_free_x
  85                         win.start[0] = next_free_y
  86                         break
  87                     win_test = win_high
  88
  89     global screen_size, stdscr
  90     curses.endwin()
  91     stdscr = curses.initscr()
  92     screen_size = stdscr.getmaxyx()
  93     for config in windows_config:
  94         size = size_window(config["config"])
  95         window = Window(config["title"], config["func"], size)
  96         windows.append(window)
  97         place_window(window)
  98     redraw_windows = True
  99
 100
 101 def draw_screen():
 102
 103     def healthy_addch(y, x, char, attr=0):
 104         """Workaround for <http://stackoverflow.com/questions/7063128/>."""
 105         if y == screen_size[0] - 1 and x == screen_size[1] - 1:
 106             char_before = stdscr.inch(y, x - 1)
 107             stdscr.addch(y, x - 1, char, attr)
 108             stdscr.insstr(y, x - 1, " ")
 109             stdscr.addch(y, x - 1, char_before)
 110         else:
 111             stdscr.addch(y, x, char, attr)
 112
 113     def draw_window_border_lines():
 114         for win in windows:
 115             for k in range(2):
 116                 j = win.start[int(k == 0)] - sep_size
 117                 if (j >= 0 and j < screen_size[int(k == 0)]):
 118                     start = win.start[k]
 119                     end = win.start[k] + win.size[k]
 120                     end = end if end < screen_size[k] else screen_size[k]
 121                     if k:
 122                         [healthy_addch(j, i, '-') for i in range(start, end)]
 123                     else:
 124                         [healthy_addch(i, j, '|') for i in range(start, end)]
 125
 126     def draw_window_border_corners():
 127         for win in windows:
 128             up = win.start[0] - sep_size
 129             down = win.start[0] + win.size[0]
 130             left = win.start[1] - sep_size
 131             right = win.start[1] + win.size[1]
 132             if (up >= 0 and up < screen_size[0]):
 133                 if (left >= 0 and left < screen_size[1]):
 134                     healthy_addch(up, left, '+')
 135                 if (right >= 0 and right < screen_size[1]):
 136                     healthy_addch(up, right, '+')
 137             if (down >= 0 and down < screen_size[0]):
 138                 if (left >= 0 and left < screen_size[1]):
 139                     healthy_addch(down, left, '+')
 140                 if (right >= 0 and right < screen_size[1]):
 141                     healthy_addch(down, right, '+')
 142
 143     def draw_window_titles():
 144         for win in windows:
 145             title = " " + win.title + " "
 146             if len(title) <= win.size[1]:
 147                 y = win.start[0] - 1
 148                 start_x = win.start[1] + int((win.size[1] - len(title))/2)
 149                 for x in range(len(title)):
 150                     healthy_addch(y, start_x + x, title[x])
 151
 152     def draw_window_contents():
 153         def draw_winmap():
 154             """Draw winmap in area delimited by offset, winmap_size.
 155
 156             The individuall cell of a winmap is interpreted as either a single
 157             character element, or as a tuple of character and attribute,
 158             depending on the size len(cell) spits out.
 159             """
 160             stop = [0, 0]
 161             for i in range(2):
 162                 stop[i] = win.size[i] + offset[i]
 163                 if stop[i] >= winmap_size[i]:
 164                     stop[i] = winmap_size[i]
 165             for y in range(offset[0], stop[0]):
 166                 for x in range(offset[1], stop[1]):
 167                     cell = winmap[y * winmap_size[1] + x]
 168                     attr = 0
 169                     if len(cell) > 1:
 170                         attr = cell[1]
 171                         cell = cell[0]
 172                     y_in_screen = win.start[0] + (y - offset[0])
 173                     x_in_screen = win.start[1] + (x - offset[1])
 174                     if (y_in_screen < screen_size[0]
 175                             and x_in_screen < screen_size[1]):
 176                         healthy_addch(y_in_screen, x_in_screen, cell, attr)
 177         def draw_scroll_hints():
 178             def draw_scroll_string(n_lines_outside):
 179                 hint = ' ' + str(n_lines_outside + 1) + ' more ' + unit + ' '
 180                 if len(hint) <= win.size[ni]:
 181                     non_hint_space = win.size[ni] - len(hint)
 182                     hint_offset = int(non_hint_space / 2)
 183                     for j in range(win.size[ni] - non_hint_space):
 184                         pos_2 = win.start[ni] + hint_offset + j
 185                         x, y = (pos_2, pos_1) if ni else (pos_1, pos_2)
 186                         healthy_addch(y, x, hint[j], curses.A_REVERSE)
 187             def draw_scroll_arrows(ar1, ar2):
 188                 for j in range(win.size[ni]):
 189                     pos_2 = win.start[ni] + j
 190                     x, y = (pos_2, pos_1) if ni else (pos_1, pos_2)
 191                     healthy_addch(y, x, ar1 if ni else ar2, curses.A_REVERSE)
 192             for i in range(2):
 193                 ni = int(i == 0)
 194                 unit = 'rows' if ni else 'columns'
 195                 if (offset[i] > 0):
 196                     pos_1 = win.start[i]
 197                     draw_scroll_arrows('^', '<')
 198                     draw_scroll_string(offset[i])
 199                 if (winmap_size[i] > offset[i] + win.size[i]):
 200                     pos_1 = win.start[i] + win.size[i] - 1
 201                     draw_scroll_arrows('v', '>')
 202                     draw_scroll_string(winmap_size[i] - offset[i]
 203                         - win.size[i])
 204         for win in windows:
 205             offset, winmap_size, winmap = win.draw()
 206             draw_winmap()
 207             draw_scroll_hints()
 208
 209     stdscr.erase()
 210     draw_window_border_lines()
 211     draw_window_border_corners()
 212     draw_window_titles()
 213     draw_window_contents()
 214     stdscr.refresh()