From b328ffc5e566e577d985aa7fcc715f28815e9dbb Mon Sep 17 00:00:00 2001 From: "Kartik K. Agaram" Date: Wed, 9 Feb 2022 08:30:19 -0800 Subject: zet.tlv: simpler UI, simpler editor --- zet.tlv | 184 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 184 insertions(+) diff --git a/zet.tlv b/zet.tlv index 43c1548..032ad29 100644 --- a/zet.tlv +++ b/zet.tlv @@ -586,6 +586,8 @@ > check_eq(cursor_down('abcdefghijklm', 5, 5), 10, 'cursor_down within wrapping line: final char') >end - __teliva_timestamp: original + __teliva_note: + >initial commit: show/edit zettels cursor_up: >function cursor_up(s, old_idx, width) > local max = string.len(s) @@ -693,3 +695,185 @@ > check_eq(cursor_up('abcdefg\nhij', 11, 5), 8, 'cursor_up to wrapping line: final char') > check_eq(cursor_up('abcdefg\nhij', 12, 5), 8, 'cursor_up to wrapping line: to shorter line') >end +- render: + >function render(window) + > window:clear() + > local lines, cols = window:getmaxyx() + > local bg=1 + > local y, x = 0, 0 -- units of characters (0-based) + > local w, h = 1, 1 -- units of zettels (1-based) + > -- render zettels depth-first, while tracking relative positions + > local done = {} + > local inprogress = {zettels.root} + > render_state.wh2id = {{}} + > while #inprogress > 0 do + > local currid = table.remove(inprogress) + > if not done[currid] then + > done[currid] = true + > table.insert(render_state.wh2id[w], currid) + > local zettel = zettels[currid] + > if currid == current_zettel_id then + > render_state.curr_w = w + > render_state.curr_h = h + > end + > local currbg = (currid == current_zettel_id) and view_settings.current_zettel_bg or bg + > render_zettel(window, currbg, depth(zettel) * view_settings.indent, y, x, zettel) + > if zettel.next then table.insert(inprogress, zettel.next) end + > if zettel.child then table.insert(inprogress, zettel.child) end + > bg = 3 - bg -- toggle between color pairs 1 and 2 + > y = y + view_settings.height + view_settings.vmargin + > h = h + 1 + > if y + view_settings.height > lines then + > y = 0 + > h = 1 + > x = x + view_settings.width + view_settings.hmargin + > w = w + 1 + > if x + view_settings.width > cols then break end + > table.insert(render_state.wh2id, {}) + > end + > end + > end + > window:mvaddstr(lines-1, 0, '') + > for i=1,3 do + > window:attrset(curses.color_pair(i%2+1)) + > window:addstr('') + > spaces(view_settings.width-string.len('')) + > window:attrset(curses.color_pair(0)) + > window:addstr(' ') -- margin + > end + > curses.refresh() + >end + __teliva_timestamp: + >Wed Feb 9 08:15:25 2022 +- main: + >function main() + > init_colors() + > current_zettel_id = zettels.root + > + > curses.curs_set(0) + > while true do + > render(window) + > update(window) + > end + >end + __teliva_timestamp: + >Wed Feb 9 08:15:35 2022 +- __teliva_note: + >get rid of commandline + > + >There's a reason vim hides it. Confusing to have two cursors on screen. + __teliva_timestamp: + >Wed Feb 9 08:16:24 2022 + editz: + >function editz() + > menu = { {'^e', 'back to browsing'},} + > local top = (render_state.curr_h - 1) * (view_settings.height + view_settings.vmargin) + > local bottom = top + view_settings.height + > local left = (render_state.curr_w - 1) * (view_settings.width + view_settings.hmargin) + > local right = left + view_settings.width + > local cursor = 1 + > local quit = false + > while not quit do + > editz_render(window, zettels[current_zettel_id].data, cursor, top, bottom, left, right) + > quit, zettels[current_zettel_id].data, cursor = editz_update(window, zettels[current_zettel_id].data, cursor) + > end + >end +- editz_render: + >function editz_render(window, s, cursor, top, minbottom, left, right) + > local h, w = window:getmaxyx() + > local cursor_y, cursor_x, cursor_c = 0, 0, 'c' + > window:attrset(curses.color_pair(view_settings.current_zettel_bg)) + > for y=top,minbottom-1 do + > for x=left,right-1 do + > window:mvaddch(y, x, ' ') + > end + > end + > local y, x = top, left + 1 -- left padding; TODO: indent + > window:mvaddstr(y, x, '') + > for i=1,string.len(s) do + > if i == cursor then + > cursor_y = y + > cursor_x = x + > cursor_c = s[i] + > end + > if s[i] ~= '\n' then + > window:addstr(s[i]) + > x = x + 1 + > if x >= right then + > y = y + 1 + > if y >= h-2 then return end + > x = left + 1 -- left padding; TODO: indent + > window:mvaddstr(y, x, '') + > end + > else + > for col=x+1,right-1 do window:addch(' '); end + > x = left + > y = y + 1 + > if y >= h-2 then return end + > window:mvaddstr(y, x, '') + > for col=x,right-1 do window:addch(' '); end + > x = left + 1 -- left padding; TODO: indent + > window:mvaddstr(y, x, '') + > end + > end + > if cursor_y == 0 and cursor_x == 0 then + > cursor_y = y + > cursor_x = x + > end + > window:mvaddstr(cursor_y, cursor_x, cursor_c) + >end + __teliva_timestamp: + >Wed Feb 9 08:22:20 2022 +- __teliva_timestamp: + >Wed Feb 9 08:25:05 2022 + editz: + >function editz() + > menu = { {'^e', 'back to browsing'},} + > local top = (render_state.curr_h - 1) * (view_settings.height + view_settings.vmargin) + > local bottom = top + view_settings.height + > local left = (render_state.curr_w - 1) * (view_settings.width + view_settings.hmargin) + > local right = left + view_settings.width + > local cursor = string.len(zettels[current_zettel_id].data) + > local quit = false + > curses.curs_set(1) + > while not quit do + > editz_render(window, zettels[current_zettel_id].data, cursor, top, bottom, left, right) + > quit, zettels[current_zettel_id].data, cursor = editz_update(window, zettels[current_zettel_id].data, cursor) + > end + > curses.curs_set(0) + >end +- __teliva_note: + >stop simulating the cursor + > + >editz_render is now much simpler + __teliva_timestamp: + >Wed Feb 9 08:28:13 2022 + editz_update: + >function editz_update(window, prose, cursor) + > local key = curses.getch() + > local h, w = window:getmaxyx() + > if key == curses.KEY_LEFT then + > if cursor > 1 then + > cursor = cursor-1 + > end + > elseif key == curses.KEY_RIGHT then + > if cursor <= #prose then + > cursor = cursor+1 + > end + > elseif key == curses.KEY_DOWN then + > cursor = cursor_down(prose, cursor, w) + > elseif key == curses.KEY_UP then + > cursor = cursor_up(prose, cursor, w) + > elseif key == curses.KEY_BACKSPACE or key == 8 or key == 127 then -- ctrl-h, ctrl-?, delete + > if cursor > 1 then + > cursor = cursor-1 + > prose = prose:remove(cursor) + > end + > elseif key == 5 then -- ctrl-e + > return true, prose, cursor + > elseif key == 10 or (key >= 32 and key < 127) then + > prose = prose:insert(string.char(key), cursor) + > cursor = cursor+1 + > end + > return false, prose, cursor + >end -- cgit 1.4.1-2-gfad0