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

   1 # This file is part of PlomRogue. PlomRogue is licensed under the GPL version 3
   2 # or any later version. For details on its copyright, license, and warranties,
   3 # see the file NOTICE in the root directory of the PlomRogue source package.
   4
   5
   6 import curses
   7 import types
   8
   9
  10 from client.config.windows import windows_config
  11
  12
  13 redraw_windows = False
  14 sep_size = 1  # Width of inter-window borders and title bars.
  15 windows = []
  16 stdscr = None
  17 screen_size = [0,0]
  18
  19
  20 class Window:
  21     def __init__(self, title, draw_function, size):
  22         self.title = title
  23         self.draw = types.MethodType(draw_function, self)
  24         self.size = size
  25
  26
  27 def set_windows():
  28
  29     def size_window(config):
  30         size = [0, 0]
  31         size[0] = config[0]
  32         if (config[0] == 0):
  33             size[0] = screen_size[0] - sep_size
  34         elif (config[0] < 0):
  35             size[0] = screen_size[0] + config[0] - sep_size
  36         size[1] = config[1]
  37         if (config[1] == 0):
  38             size[1] = screen_size[1]
  39         elif (config[1] < 0):
  40             size[1] = screen_size[1] + config[1]
  41         return size
  42
  43     def place_window(win):
  44         win_i = windows.index(win)
  45
  46         # If win is first window, it goes into the top left corner.
  47         win.start = [0 + sep_size, 0]
  48         if (win_i > 0):
  49
  50             # If not, get win's closest predecessor starting a new stack on the
  51             # screen top,fit win's top left to that win_top's top right corner.
  52             win_top = None
  53             for i in range(win_i - 1, -1, -1):
  54                 win_top = windows[i]
  55                 if (win_top.start[0] == 0 + sep_size):
  56                     break
  57             win.start[1] = win_top.start[1] + win_top.size[1] + sep_size
  58
  59             # If enough space is found below win's predecessor, fit win's top
  60             # left corner to that predecessor's bottom left corner.
  61             win_prev = windows[win_i - 1]
  62             next_free_y = win_prev.start[0] + win_prev.size[0] + sep_size
  63             if (win.size[1] <= win_prev.size[1] and
  64                     win.size[0] <= screen_size[0] - next_free_y):
  65                 win.start[1] = win_prev.start[1]
  66                 win.start[0] = next_free_y
  67
  68             # If that fails, try to fit win's top left corner to the top right
  69             # corner of its closest predecessor win_test 1) below win_top (see
  70             # above) 2) and with enough space open to its right between its
  71             # right edge and the lower edge of a win_high located directly
  72             # above win_test to fit win there (without growing further to the
  73             # right than win_high does or surpassing the screen's lower edge).
  74             else:
  75                 win_test = win_prev
  76                 win_high = None
  77                 while (win_test != win_top):
  78                     for i in range(win_i - 2, -1, -1):
  79                         win_high = windows[i]
  80                         if win_test.start[0] > win_high.start[0]:
  81                             break
  82                     next_free_y = win_high.start[0] + win_high.size[0] \
  83                         + sep_size
  84                     first_free_x = win_test.start[1] + win_test.size[1] \
  85                         + sep_size
  86                     last_free_x = win_high.start[1] + win_high.size[1]
  87                     if (win.size[0] <= screen_size[0] - next_free_y and
  88                             win.size[1] <= last_free_x - first_free_x):
  89                         win.start[1] = first_free_x
  90                         win.start[0] = next_free_y
  91                         break
  92                     win_test = win_high
  93
  94     global screen_size, stdscr
  95     curses.endwin()
  96     stdscr = curses.initscr()
  97     screen_size = stdscr.getmaxyx()
  98     global windows
  99     windows = []
 100     for config in windows_config:
 101         size = size_window(config["config"])
 102         window = Window(config["title"], config["func"], size)
 103         windows.append(window)
 104         place_window(window)
 105     redraw_windows = True
 106
 107
 108 def draw_screen():
 109
 110     def healthy_addch(y, x, char, attr=0):
 111         """Wrap Python curses' addch() weirdnesses into sane interface.
 112
 113         Works around <http://stackoverflow.com/questions/7063128/> with
 114         <https://stackoverflow.com/a/26797300> and enforces char to be a byte
 115         instead of a single-char string.
 116         """
 117         if y == screen_size[0] - 1 and x == screen_size[1] - 1:
 118             char_before = stdscr.inch(y, x - 1)
 119             stdscr.addch(y, x - 1, char.encode(), attr)
 120             stdscr.insstr(y, x - 1, " ")
 121             stdscr.addch(y, x - 1,
 122                          char_before & 0xFF, char_before & curses.A_ATTRIBUTES)
 123         else:
 124             stdscr.addch(y, x, char.encode(), attr)
 125
 126     def draw_window_border_lines():
 127         for win in windows:
 128             for k in range(2):
 129                 j = win.start[int(k == 0)] - sep_size
 130                 if (j >= 0 and j < screen_size[int(k == 0)]):
 131                     start = win.start[k]
 132                     end = win.start[k] + win.size[k]
 133                     end = end if end < screen_size[k] else screen_size[k]
 134                     if k:
 135                         [healthy_addch(j, i, '-') for i in range(start, end)]
 136                     else:
 137                         [healthy_addch(i, j, '|') for i in range(start, end)]
 138
 139     def draw_window_border_corners():
 140         for win in windows:
 141             up = win.start[0] - sep_size
 142             down = win.start[0] + win.size[0]
 143             left = win.start[1] - sep_size
 144             right = win.start[1] + win.size[1]
 145             if (up >= 0 and up < screen_size[0]):
 146                 if (left >= 0 and left < screen_size[1]):
 147                     healthy_addch(up, left, '+')
 148                 if (right >= 0 and right < screen_size[1]):
 149                     healthy_addch(up, right, '+')
 150             if (down >= 0 and down < screen_size[0]):
 151                 if (left >= 0 and left < screen_size[1]):
 152                     healthy_addch(down, left, '+')
 153                 if (right >= 0 and right < screen_size[1]):
 154                     healthy_addch(down, right, '+')
 155
 156     def draw_window_titles():
 157         for win in windows:
 158             title = " " + win.title + " "
 159             if len(title) <= win.size[1]:
 160                 y = win.start[0] - 1
 161                 start_x = win.start[1] + int((win.size[1] - len(title))/2)
 162                 for x in range(len(title)):
 163                     healthy_addch(y, start_x + x, title[x])
 164
 165     def draw_window_contents():
 166         def draw_winmap():
 167             """Draw winmap in area delimited by offset, winmap_size.
 168
 169             The individuall cell of a winmap is interpreted as either a single
 170             character element, or as a tuple of character and attribute,
 171             depending on the size len(cell) spits out.
 172             """
 173             stop = [0, 0]
 174             for i in range(2):
 175                 stop[i] = win.size[i] + offset[i]
 176                 if stop[i] >= winmap_size[i]:
 177                     stop[i] = winmap_size[i]
 178             for y in range(offset[0], stop[0]):
 179                 for x in range(offset[1], stop[1]):
 180                     cell = winmap[y * winmap_size[1] + x]
 181                     attr = 0
 182                     if len(cell) > 1:
 183                         attr = cell[1]
 184                         cell = cell[0]
 185                     y_in_screen = win.start[0] + (y - offset[0])
 186                     x_in_screen = win.start[1] + (x - offset[1])
 187                     if (y_in_screen < screen_size[0]
 188                             and x_in_screen < screen_size[1]):
 189                         healthy_addch(y_in_screen, x_in_screen, cell, attr)
 190         def draw_scroll_hints():
 191             def draw_scroll_string(n_lines_outside):
 192                 hint = ' ' + str(n_lines_outside + 1) + ' more ' + unit + ' '
 193                 if len(hint) <= win.size[ni]:
 194                     non_hint_space = win.size[ni] - len(hint)
 195                     hint_offset = int(non_hint_space / 2)
 196                     for j in range(win.size[ni] - non_hint_space):
 197                         pos_2 = win.start[ni] + hint_offset + j
 198                         x, y = (pos_2, pos_1) if ni else (pos_1, pos_2)
 199                         healthy_addch(y, x, hint[j], curses.A_REVERSE)
 200             def draw_scroll_arrows(ar1, ar2):
 201                 for j in range(win.size[ni]):
 202                     pos_2 = win.start[ni] + j
 203                     x, y = (pos_2, pos_1) if ni else (pos_1, pos_2)
 204                     healthy_addch(y, x, ar1 if ni else ar2, curses.A_REVERSE)
 205             for i in range(2):
 206                 ni = int(i == 0)
 207                 unit = 'rows' if ni else 'columns'
 208                 if (offset[i] > 0):
 209                     pos_1 = win.start[i]
 210                     draw_scroll_arrows('^', '<')
 211                     draw_scroll_string(offset[i])
 212                 if (winmap_size[i] > offset[i] + win.size[i]):
 213                     pos_1 = win.start[i] + win.size[i] - 1
 214                     draw_scroll_arrows('v', '>')
 215                     draw_scroll_string(winmap_size[i] - offset[i]
 216                         - win.size[i])
 217         for win in windows:
 218             offset, winmap_size, winmap = win.draw()
 219             draw_winmap()
 220             draw_scroll_hints()
 221
 222     stdscr.erase()
 223     draw_window_border_lines()
 224     draw_window_border_corners()
 225     draw_window_titles()
 226     draw_window_contents()
 227     stdscr.refresh()