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dfhack/library/lua/gui/widgets.lua

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-- Simple widgets for screens
local _ENV = mkmodule('gui.widgets')
local gui = require('gui')
local guidm = require('gui.dwarfmode')
local utils = require('utils')
local dscreen = dfhack.screen
local getval = utils.getval
local to_pen = dfhack.pen.parse
local function show_view(view,vis)
if view then
view.visible = vis
end
end
local function map_opttab(tab,idx)
if tab then
return tab[idx]
else
return idx
end
end
STANDARDSCROLL = {
STANDARDSCROLL_UP = -1,
KEYBOARD_CURSOR_UP = -1,
STANDARDSCROLL_DOWN = 1,
KEYBOARD_CURSOR_DOWN = 1,
STANDARDSCROLL_PAGEUP = '-page',
KEYBOARD_CURSOR_UP_FAST = '-page',
STANDARDSCROLL_PAGEDOWN = '+page',
KEYBOARD_CURSOR_DOWN_FAST = '+page',
}
------------
-- Widget --
------------
Widget = defclass(Widget, gui.View)
Widget.ATTRS {
frame = DEFAULT_NIL,
frame_inset = DEFAULT_NIL,
frame_background = DEFAULT_NIL,
}
function Widget:computeFrame(parent_rect)
local sw, sh = parent_rect.width, parent_rect.height
return gui.compute_frame_body(sw, sh, self.frame, self.frame_inset)
end
function Widget:onRenderFrame(dc, rect)
if self.frame_background then
dc:fill(rect, self.frame_background)
end
end
-----------
-- Panel --
-----------
DOUBLE_CLICK_MS = 500
Panel = defclass(Panel, Widget)
Panel.ATTRS {
frame_style = DEFAULT_NIL, -- as in gui.FramedScreen
frame_title = DEFAULT_NIL, -- as in gui.FramedScreen
on_render = DEFAULT_NIL,
on_layout = DEFAULT_NIL,
draggable = false,
drag_anchors = DEFAULT_NIL,
drag_bound = 'frame', -- or 'body'
on_drag_begin = DEFAULT_NIL,
on_drag_end = DEFAULT_NIL,
resizable = false,
resize_anchors = DEFAULT_NIL,
resize_min = DEFAULT_NIL,
on_resize_begin = DEFAULT_NIL,
on_resize_end = DEFAULT_NIL,
autoarrange_subviews = false, -- whether to automatically lay out subviews
autoarrange_gap = 0, -- how many blank lines to insert between widgets
}
function Panel:init(args)
if not self.drag_anchors then
self.drag_anchors = {title=true, frame=false, body=true}
end
if not self.resize_anchors then
self.resize_anchors = {t=false, l=true, r=true, b=true}
end
self.resize_min = self.resize_min or {}
self.resize_min.w = self.resize_min.w or (self.frame or {}).w or 5
self.resize_min.h = self.resize_min.h or (self.frame or {}).h or 5
self.kbd_get_pos = nil -- fn when we are in keyboard dragging mode
self.saved_frame = nil -- copy of frame when dragging started
self.saved_frame_rect = nil -- copy of frame_rect when dragging started
self.drag_offset = nil -- relative pos of held panel tile
self.resize_edge = nil -- which dimension is being resized?
self.last_title_click_ms = 0 -- used to track double-clicking on the title
self:addviews(args.subviews)
end
local function Panel_update_frame(self, frame, clear_state)
if clear_state then
self.kbd_get_pos = nil
self.saved_frame = nil
self.saved_frame_rect = nil
self.drag_offset = nil
self.resize_edge = nil
end
if not frame then return end
if self.frame.l == frame.l and self.frame.r == frame.r
and self.frame.t == frame.t and self.frame.b == frame.b
and self.frame.w == frame.w and self.frame.h == frame.h then
return
end
self.frame = frame
self:updateLayout()
end
-- dim: the name of the dimension var (i.e. 'h' or 'w')
-- anchor: the name of the anchor var (i.e. 't', 'b', 'l', or 'r')
-- opposite_anchor: the name of the anchor var for the opposite edge
-- max_dim: how big this panel can get from its current pos and fit in parent
-- wanted_dim: how big the player is trying to make the panel
-- max_anchor: max value of the frame anchor for the edge that is being resized
-- wanted_anchor: how small the player is trying to make the anchor value
local function Panel_resize_edge_base(frame, resize_min, dim, anchor,
opposite_anchor, max_dim, wanted_dim,
max_anchor, wanted_anchor)
frame[dim] = math.max(resize_min[dim], math.min(max_dim, wanted_dim))
if frame[anchor] or not frame[opposite_anchor] then
frame[anchor] = math.max(0, math.min(max_anchor, wanted_anchor))
end
end
local function Panel_resize_edge(frame, resize_min, dim, anchor,
opposite_anchor, dim_base, dim_ref, anchor_ref,
dim_far, mouse_ref)
local dim_sign = (anchor == 't' or anchor == 'l') and 1 or -1
local max_dim = dim_base - dim_ref + 1
local wanted_dim = dim_sign * (dim_far - mouse_ref) + 1
local max_anchor = dim_base - resize_min[dim] - dim_ref + 1
local wanted_anchor = dim_sign * (mouse_ref - anchor_ref)
Panel_resize_edge_base(frame, resize_min, dim, anchor, opposite_anchor,
max_dim, wanted_dim, max_anchor, wanted_anchor)
end
local function Panel_resize_frame(self, mouse_pos)
local frame, resize_min = copyall(self.frame), self.resize_min
local parent_rect = self.frame_parent_rect
local ref_rect = self.saved_frame_rect
if self.resize_edge:find('t') then
Panel_resize_edge(frame, resize_min, 'h', 't', 'b', ref_rect.y2,
parent_rect.y1, parent_rect.y1, ref_rect.y2, mouse_pos.y)
end
if self.resize_edge:find('b') then
Panel_resize_edge(frame, resize_min, 'h', 'b', 't', parent_rect.y2,
ref_rect.y1, parent_rect.y2, ref_rect.y1, mouse_pos.y)
end
if self.resize_edge:find('l') then
Panel_resize_edge(frame, resize_min, 'w', 'l', 'r', ref_rect.x2,
parent_rect.x1, parent_rect.x1, ref_rect.x2, mouse_pos.x)
end
if self.resize_edge:find('r') then
Panel_resize_edge(frame, resize_min, 'w', 'r', 'l', parent_rect.x2,
ref_rect.x1, parent_rect.x2, ref_rect.x1, mouse_pos.x)
end
return frame
end
local function Panel_drag_frame(self, mouse_pos)
local frame = copyall(self.frame)
local parent_rect, frame_rect = self.frame_parent_rect, self.frame_rect
local bound_rect = self.drag_bound == 'body' and self.frame_body
or frame_rect
local offset = self.drag_offset
local max_width = parent_rect.width - (bound_rect.x2-frame_rect.x1+1)
local max_height = parent_rect.height - (bound_rect.y2-frame_rect.y1+1)
if frame.t or not frame.b then
local min_pos = frame_rect.y1 - bound_rect.y1
local requested_pos = mouse_pos.y - parent_rect.y1 - offset.y
frame.t = math.max(min_pos, math.min(max_height, requested_pos))
end
if frame.b or not frame.t then
local min_pos = bound_rect.y2 - frame_rect.y2
local requested_pos = parent_rect.y2 - mouse_pos.y + offset.y -
(frame_rect.y2 - frame_rect.y1)
frame.b = math.max(min_pos, math.min(max_height, requested_pos))
end
if frame.l or not frame.r then
local min_pos = frame_rect.x1 - bound_rect.x1
local requested_pos = mouse_pos.x - parent_rect.x1 - offset.x
frame.l = math.max(min_pos, math.min(max_width, requested_pos))
end
if frame.r or not frame.l then
local min_pos = bound_rect.x2 - frame_rect.x2
local requested_pos = parent_rect.x2 - mouse_pos.x + offset.x -
(frame_rect.x2 - frame_rect.x1)
frame.r = math.max(min_pos, math.min(max_width, requested_pos))
end
return frame
end
local function Panel_make_frame(self, mouse_pos)
mouse_pos = mouse_pos or xy2pos(dfhack.screen.getMousePos())
return self.resize_edge and Panel_resize_frame(self, mouse_pos)
or Panel_drag_frame(self, mouse_pos)
end
local function Panel_begin_drag(self, drag_offset, resize_edge)
Panel_update_frame(self, nil, true)
self.drag_offset = drag_offset or {x=0, y=0}
self.resize_edge = resize_edge
self.saved_frame = copyall(self.frame)
self.saved_frame_rect = copyall(self.frame_rect)
self.prev_focus_owner = self.focus_group.cur
self:setFocus(true)
if self.resize_edge then
if self.on_resize_begin then self.on_resize_begin(success) end
else
if self.on_drag_begin then self.on_drag_begin(success) end
end
end
local function Panel_end_drag(self, frame, success)
success = not not success
if self.prev_focus_owner then
self.prev_focus_owner:setFocus(true)
else
self:setFocus(false)
end
Panel_update_frame(self, frame, true)
if self.resize_edge then
if self.on_resize_end then self.on_resize_end(success) end
else
if self.on_drag_end then self.on_drag_end(success) end
end
end
local function Panel_on_double_click(self)
local a = self.resize_anchors
local can_vert, can_horiz = a.t or a.b, a.l or a.r
if not can_vert and not can_horiz then return false end
local f, rmin = self.frame, self.resize_min
local maximized = f.t == 0 and f.b == 0 and f.l == 0 and f.r == 0
local frame
if maximized then
frame = {
t=not can_vert and f.t or nil,
l=not can_horiz and f.l or nil,
b=not can_vert and f.b or nil,
r=not can_horiz and f.r or nil,
w=can_vert and rmin.w or f.w,
h=can_horiz and rmin.h or f.h,
}
else
frame = {
t=can_vert and 0 or f.t,
l=can_horiz and 0 or f.l,
b=can_vert and 0 or f.b,
r=can_horiz and 0 or f.r
}
end
Panel_update_frame(self, frame, true)
end
function Panel:onInput(keys)
if self.kbd_get_pos then
if keys.SELECT or keys.LEAVESCREEN or keys._MOUSE_R_DOWN then
Panel_end_drag(self, not keys.SELECT and self.saved_frame or nil,
not not keys.SELECT)
return true
end
for code in pairs(keys) do
local dx, dy = guidm.get_movement_delta(code, 1, 10)
if dx then
local frame_rect = self.frame_rect
local kbd_pos = self.kbd_get_pos()
kbd_pos.x = kbd_pos.x + dx
kbd_pos.y = kbd_pos.y + dy
Panel_update_frame(self, Panel_make_frame(self, kbd_pos))
return true
end
end
return
end
if self.drag_offset then
if keys._MOUSE_R_DOWN then
Panel_end_drag(self, self.saved_frame)
elseif keys._MOUSE_L then
Panel_update_frame(self, Panel_make_frame(self))
end
return true
end
if Panel.super.onInput(self, keys) then
return true
end
if not keys._MOUSE_L_DOWN then return end
local x,y = self:getMouseFramePos()
if not x then return end
if self.resizable and y == 0 then
local now_ms = dfhack.getTickCount()
if now_ms - self.last_title_click_ms <= DOUBLE_CLICK_MS then
self.last_title_click_ms = 0
if Panel_on_double_click(self) then return true end
else
self.last_title_click_ms = now_ms
end
end
local resize_edge = nil
if self.resizable then
local rect = self.frame_rect
if self.resize_anchors.r and self.resize_anchors.b
and x == rect.x2 - rect.x1 and y == rect.y2 - rect.y1 then
resize_edge = 'rb'
elseif self.resize_anchors.l and self.resize_anchors.b
and x == 0 and y == rect.y2 - rect.y1 then
resize_edge = 'lb'
elseif self.resize_anchors.r and self.resize_anchors.t
and x == rect.x2 - rect.x1 and y == 0 then
resize_edge = 'rt'
elseif self.resize_anchors.r and self.resize_anchors.t
and x == 0 and y == 0 then
resize_edge = 'lt'
elseif self.resize_anchors.r and x == rect.x2 - rect.x1 then
resize_edge = 'r'
elseif self.resize_anchors.l and x == 0 then
resize_edge = 'l'
elseif self.resize_anchors.b and y == rect.y2 - rect.y1 then
resize_edge = 'b'
elseif self.resize_anchors.t and y == 0 then
resize_edge = 't'
end
end
local is_dragging = false
if not resize_edge and self.draggable then
local on_body = self:getMousePos()
is_dragging = (self.drag_anchors.title and self.frame_style and y == 0)
or (self.drag_anchors.frame and not on_body) -- includes inset
or (self.drag_anchors.body and on_body)
end
if resize_edge or is_dragging then
Panel_begin_drag(self, {x=x, y=y}, resize_edge)
return true
end
end
function Panel:setKeyboardDragEnabled(enabled)
if (enabled and self.kbd_get_pos)
or (not enabled and not self.kbd_get_pos) then
return
end
if enabled then
local kbd_get_pos = function()
return {x=self.frame_rect.x1, y=self.frame_rect.y1}
end
Panel_begin_drag(self)
self.kbd_get_pos = kbd_get_pos
else
Panel_end_drag(self)
end
end
local function Panel_get_resize_data(self)
local resize_anchors = self.resize_anchors
if resize_anchors.r and resize_anchors.b then
return 'rb', function()
return {x=self.frame_rect.x2, y=self.frame_rect.y2} end
elseif resize_anchors.l and resize_anchors.b then
return 'lb', function()
return {x=self.frame_rect.x1, y=self.frame_rect.y2} end
elseif resize_anchors.r and resize_anchors.t then
return 'rt', function()
return {x=self.frame_rect.x2, y=self.frame_rect.y1} end
elseif resize_anchors.l and resize_anchors.t then
return 'lt', function()
return {x=self.frame_rect.x1, y=self.frame_rect.y1} end
elseif resize_anchors.b then
return 'b', function()
return {x=(self.frame_rect.x1+self.frame_rect.x2)/2,
y=self.frame_rect.y2} end
elseif resize_anchors.r then
return 'r', function()
return {x=self.frame_rect.x2,
y=(self.frame_rect.y1+self.frame_rect.y2)/2} end
elseif resize_anchors.l then
return 'l', function()
return {x=self.frame_rect.x1,
y=(self.frame_rect.y1+self.frame_rect.y2)/2} end
elseif resize_anchors.t then
return 't', function()
return {x=(self.frame_rect.x1+self.frame_rect.x2)/2,
y=self.frame_rect.y1} end
end
end
function Panel:setKeyboardResizeEnabled(enabled)
if (enabled and self.kbd_get_pos)
or (not enabled and not self.kbd_get_pos) then
return
end
if enabled then
local resize_edge, kbd_get_pos = Panel_get_resize_data(self)
if not resize_edge then
dfhack.printerr('cannot resize window: no anchors are enabled')
else
Panel_begin_drag(self, kbd_get_pos(), resize_edge)
self.kbd_get_pos = kbd_get_pos
end
else
Panel_end_drag(self)
end
end
function Panel:onRenderBody(dc)
if self.on_render then self.on_render(dc) end
end
function Panel:computeFrame(parent_rect)
local sw, sh = parent_rect.width, parent_rect.height
if self.frame then
if self.frame.t and self.frame.h and self.frame.t + self.frame.h > sh then
self.frame.t = math.max(0, sh - self.frame.h)
end
if self.frame.b and self.frame.h and self.frame.b + self.frame.h > sh then
self.frame.b = math.max(0, sh - self.frame.h)
end
if self.frame.l and self.frame.w and self.frame.l + self.frame.w > sw then
self.frame.l = math.max(0, sw - self.frame.w)
end
if self.frame.r and self.frame.w and self.frame.r + self.frame.w > sw then
self.frame.r = math.max(0, sw - self.frame.w)
end
end
return gui.compute_frame_body(sw, sh, self.frame, self.frame_inset,
self.frame_style and 1 or 0)
end
function Panel:postComputeFrame(body)
if self.on_layout then self.on_layout(body) end
end
-- if self.autoarrange_subviews is true, lay out visible subviews vertically,
-- adding gaps between widgets according to self.autoarrange_gap.
function Panel:postUpdateLayout()
-- don't leave artifacts behind on the parent screen when we move
gui.Screen.request_full_screen_refresh = true
if not self.autoarrange_subviews then return end
local gap = self.autoarrange_gap
local y = 0
for _,subview in ipairs(self.subviews) do
if not subview.frame then goto continue end
subview.frame.t = y
if getval(subview.visible) then
y = y + (subview.frame.h or 0) + gap
end
::continue::
end
self.frame_rect.height = y
-- let widgets adjust to their new positions
self:updateSubviewLayout()
end
function Panel:onRenderFrame(dc, rect)
Panel.super.onRenderFrame(self, dc, rect)
if not self.frame_style then return end
local inactive = self.parent_view and self.parent_view.hasFocus
and not self.parent_view:hasFocus()
local pause_forced = self.parent_view and self.parent_view.force_pause
gui.paint_frame(dc, rect, self.frame_style, self.frame_title, inactive,
pause_forced, self.resizable)
if self.kbd_get_pos then
local pos = self.kbd_get_pos()
local pen = to_pen{fg=COLOR_GREEN, bg=COLOR_BLACK}
dc:seek(pos.x, pos.y):pen(pen):char(string.char(0xDB))
end
if self.drag_offset and not self.kbd_get_pos
and df.global.enabler.mouse_lbut == 0 then
Panel_end_drag(self, nil, true)
end
end
------------
-- Window --
------------
Window = defclass(Window, Panel)
Window.ATTRS {
frame_style = gui.WINDOW_FRAME,
frame_background = gui.CLEAR_PEN,
frame_inset = 1,
draggable = true,
}
-------------------
-- ResizingPanel --
-------------------
ResizingPanel = defclass(ResizingPanel, Panel)
ResizingPanel.ATTRS{
auto_height = true,
auto_width = false,
}
-- adjust our frame dimensions according to positions and sizes of our subviews
function ResizingPanel:postUpdateLayout(frame_body)
local w, h = 0, 0
for _,s in ipairs(self.subviews) do
if getval(s.visible) then
w = math.max(w, (s.frame and s.frame.l or 0) +
(s.frame and s.frame.w or frame_body.width))
h = math.max(h, (s.frame and s.frame.t or 0) +
(s.frame and s.frame.h or frame_body.height))
end
end
local l,t,r,b = gui.parse_inset(self.frame_inset)
w = w + l + r
h = h + t + b
if self.frame_style then
w = w + 2
h = h + 2
end
if not self.frame then self.frame = {} end
local oldw, oldh = self.frame.w, self.frame.h
if not self.auto_height then h = oldh end
if not self.auto_width then w = oldw end
self.frame.w, self.frame.h = w, h
if not self._updateLayoutGuard and (oldw ~= w or oldh ~= h) then
self._updateLayoutGuard = true -- protect against infinite loops
self:updateLayout() -- our frame has changed, we need to fully refresh
end
self._updateLayoutGuard = nil
end
-----------
-- Pages --
-----------
Pages = defclass(Pages, Panel)
function Pages:init(args)
for _,v in ipairs(self.subviews) do
v.visible = false
end
self:setSelected(args.selected or 1)
end
function Pages:setSelected(idx)
if type(idx) ~= 'number' then
local key = idx
if type(idx) == 'string' then
key = self.subviews[key]
end
idx = utils.linear_index(self.subviews, key)
if not idx then
error('Unknown page: '..tostring(key))
end
end
show_view(self.subviews[self.selected], false)
self.selected = math.min(math.max(1, idx), #self.subviews)
show_view(self.subviews[self.selected], true)
end
function Pages:getSelected()
return self.selected, self.subviews[self.selected]
end
function Pages:getSelectedPage()
return self.subviews[self.selected]
end
----------------
-- Edit field --
----------------
EditField = defclass(EditField, Widget)
EditField.ATTRS{
label_text = DEFAULT_NIL,
text = '',
text_pen = DEFAULT_NIL,
on_char = DEFAULT_NIL,
on_change = DEFAULT_NIL,
on_submit = DEFAULT_NIL,
on_submit2 = DEFAULT_NIL,
key = DEFAULT_NIL,
key_sep = DEFAULT_NIL,
modal = false,
ignore_keys = DEFAULT_NIL,
}
function EditField:preinit(init_table)
init_table.frame = init_table.frame or {}
init_table.frame.h = init_table.frame.h or 1
end
function EditField:init()
local function on_activate()
self.saved_text = self.text
self:setFocus(true)
end
self.start_pos = 1
self.cursor = #self.text + 1
self:addviews{HotkeyLabel{frame={t=0,l=0},
key=self.key,
key_sep=self.key_sep,
label=self.label_text,
on_activate=self.key and on_activate or nil}}
end
function EditField:getPreferredFocusState()
return not self.key
end
function EditField:setCursor(cursor)
if not cursor or cursor > #self.text then
self.cursor = #self.text + 1
return
end
self.cursor = math.max(1, cursor)
end
function EditField:setText(text, cursor)
self.text = text
self:setCursor(cursor)
end
function EditField:postUpdateLayout()
self.text_offset = self.subviews[1]:getTextWidth()
end
function EditField:onRenderBody(dc)
dc:pen(self.text_pen or COLOR_LIGHTCYAN)
local cursor_char = '_'
if not getval(self.active) or not self.focus or gui.blink_visible(300) then
cursor_char = (self.cursor > #self.text) and ' ' or
self.text:sub(self.cursor, self.cursor)
end
local txt = self.text:sub(1, self.cursor - 1) .. cursor_char ..
self.text:sub(self.cursor + 1)
local max_width = dc.width - self.text_offset
self.start_pos = 1
if #txt > max_width then
-- get the substring in the vicinity of the cursor
max_width = max_width - 2
local half_width = math.floor(max_width/2)
local start_pos = math.max(1, self.cursor-half_width)
local end_pos = math.min(#txt, self.cursor+half_width-1)
if self.cursor + half_width > #txt then
start_pos = #txt - (max_width - 1)
end
if self.cursor - half_width <= 1 then
end_pos = max_width + 1
end
self.start_pos = start_pos > 1 and start_pos - 1 or start_pos
txt = ('%s%s%s'):format(start_pos == 1 and '' or string.char(27),
txt:sub(start_pos, end_pos),
end_pos == #txt and '' or string.char(26))
end
dc:advance(self.text_offset):string(txt)
end
function EditField:insert(text)
local old = self.text
self:setText(old:sub(1,self.cursor-1)..text..old:sub(self.cursor),
self.cursor + #text)
end
function EditField:onInput(keys)
if not self.focus then
-- only react to our hotkey
return self:inputToSubviews(keys)
end
if self.ignore_keys then
for _,ignore_key in ipairs(self.ignore_keys) do
if keys[ignore_key] then return false end
end
end
if self.key and (keys.LEAVESCREEN or keys._MOUSE_R_DOWN) then
local old = self.text
self:setText(self.saved_text)
if self.on_change and old ~= self.saved_text then
self.on_change(self.text, old)
end
self:setFocus(false)
return true
end
if keys.SELECT or keys.CUSTOM_SHIFT_ENTER then
if self.key then
self:setFocus(false)
end
if keys.CUSTOM_SHIFT_ENTER then
if self.on_submit2 then
self.on_submit2(self.text)
return true
end
else
if self.on_submit then
self.on_submit(self.text)
return true
end
end
return not not self.key
elseif keys._MOUSE_L then
local mouse_x, mouse_y = self:getMousePos()
if mouse_x then
self:setCursor(self.start_pos + mouse_x - (self.text_offset or 0))
return true
end
elseif keys._STRING then
local old = self.text
if keys._STRING == 0 then
-- handle backspace
local del_pos = self.cursor - 1
if del_pos > 0 then
self:setText(old:sub(1, del_pos-1) .. old:sub(del_pos+1),
del_pos)
end
else
local cv = string.char(keys._STRING)
if not self.on_char or self.on_char(cv, old) then
self:insert(cv)
elseif self.on_char then
return self.modal
end
end
if self.on_change and self.text ~= old then
self.on_change(self.text, old)
end
return true
elseif keys.KEYBOARD_CURSOR_LEFT then
self:setCursor(self.cursor - 1)
return true
elseif keys.CUSTOM_CTRL_B then -- back one word
local _, prev_word_end = self.text:sub(1, self.cursor-1):
find('.*[%w_%-][^%w_%-]')
self:setCursor(prev_word_end or 1)
return true
elseif keys.CUSTOM_CTRL_A then -- home
self:setCursor(1)
return true
elseif keys.KEYBOARD_CURSOR_RIGHT then
self:setCursor(self.cursor + 1)
return true
elseif keys.CUSTOM_CTRL_F then -- forward one word
local _,next_word_start = self.text:find('[^%w_%-][%w_%-]', self.cursor)
self:setCursor(next_word_start)
return true
elseif keys.CUSTOM_CTRL_E then -- end
self:setCursor()
return true
end
-- if we're modal, then unconditionally eat all the input
return self.modal
end
---------------
-- Scrollbar --
---------------
SCROLL_INITIAL_DELAY_MS = 300
SCROLL_DELAY_MS = 20
Scrollbar = defclass(Scrollbar, Widget)
Scrollbar.ATTRS{
on_scroll = DEFAULT_NIL,
}
function Scrollbar:preinit(init_table)
init_table.frame = init_table.frame or {}
init_table.frame.w = init_table.frame.w or 2
end
function Scrollbar:init()
self.last_scroll_ms = 0
self.is_first_click = false
self.scroll_spec = nil
self.is_dragging = false -- index of the scrollbar tile that we're dragging
self:update(1, 1, 1)
end
local function scrollbar_get_max_pos_and_height(scrollbar)
local frame_body = scrollbar.frame_body
local scrollbar_body_height = (frame_body and frame_body.height or 3) - 2
local height = math.max(2, math.floor(
(math.min(scrollbar.elems_per_page, scrollbar.num_elems) * scrollbar_body_height) /
scrollbar.num_elems))
return scrollbar_body_height - height, height
end
-- calculate and cache the number of tiles of empty space above the top of the
-- scrollbar and the number of tiles the scrollbar should occupy to represent
-- the percentage of text that is on the screen.
-- if elems_per_page or num_elems are not specified, the last values passed to
-- Scrollbar:update() are used.
function Scrollbar:update(top_elem, elems_per_page, num_elems)
if not top_elem then error('must specify index of new top element') end
elems_per_page = elems_per_page or self.elems_per_page
num_elems = num_elems or self.num_elems
self.top_elem = top_elem
self.elems_per_page, self.num_elems = elems_per_page, num_elems
local max_pos, height = scrollbar_get_max_pos_and_height(self)
local pos = (num_elems == elems_per_page) and 0 or
math.ceil(((top_elem-1) * max_pos) /
(num_elems - elems_per_page))
self.bar_offset, self.bar_height = pos, height
end
local function scrollbar_do_drag(scrollbar)
local _,y = scrollbar.frame_body:localXY(dfhack.screen.getMousePos())
local cur_pos = y - scrollbar.is_dragging
local max_top = scrollbar.num_elems - scrollbar.elems_per_page + 1
local max_pos = scrollbar_get_max_pos_and_height(scrollbar)
local new_top_elem = math.floor(cur_pos * max_top / max_pos) + 1
new_top_elem = math.max(1, math.min(new_top_elem, max_top))
if new_top_elem ~= scrollbar.top_elem then
scrollbar.on_scroll(new_top_elem)
end
end
local function scrollbar_is_visible(scrollbar)
return scrollbar.elems_per_page < scrollbar.num_elems
end
local SBSO = 922 --Scroll Bar Spritesheet Offset / change this to point to a different spritesheet (ui themes, anyone? :p)
local SCROLLBAR_UP_LEFT_PEN = to_pen{tile=SBSO+0, ch=47, fg=COLOR_CYAN, bg=COLOR_BLACK}
local SCROLLBAR_UP_RIGHT_PEN = to_pen{tile=SBSO+1, ch=92, fg=COLOR_CYAN, bg=COLOR_BLACK}
local SCROLLBAR_DOWN_LEFT_PEN = to_pen{tile=SBSO+24, ch=92, fg=COLOR_CYAN, bg=COLOR_BLACK}
local SCROLLBAR_DOWN_RIGHT_PEN = to_pen{tile=SBSO+25, ch=47, fg=COLOR_CYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_UP_LEFT_PEN = to_pen{tile=SBSO+6, ch=219, fg=COLOR_CYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_UP_RIGHT_PEN = to_pen{tile=SBSO+7, ch=219, fg=COLOR_CYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_LEFT_PEN = to_pen{tile=SBSO+30, ch=219, fg=COLOR_CYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_RIGHT_PEN = to_pen{tile=SBSO+31, ch=219, fg=COLOR_CYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_CENTER_UP_LEFT_PEN = to_pen{tile=SBSO+10, ch=219, fg=COLOR_CYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_CENTER_UP_RIGHT_PEN = to_pen{tile=SBSO+11, ch=219, fg=COLOR_CYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_CENTER_DOWN_LEFT_PEN = to_pen{tile=SBSO+22, ch=219, fg=COLOR_CYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_CENTER_DOWN_RIGHT_PEN = to_pen{tile=SBSO+23, ch=219, fg=COLOR_CYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_CENTER_LEFT_PEN = to_pen{tile=SBSO+18, ch=219, fg=COLOR_CYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_CENTER_RIGHT_PEN = to_pen{tile=SBSO+19, ch=219, fg=COLOR_CYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_DOWN_LEFT_PEN = to_pen{tile=SBSO+42, ch=219, fg=COLOR_CYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_DOWN_RIGHT_PEN = to_pen{tile=SBSO+43, ch=219, fg=COLOR_CYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_2TALL_UP_LEFT_PEN = to_pen{tile=SBSO+26, ch=219, fg=COLOR_CYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_2TALL_UP_RIGHT_PEN = to_pen{tile=SBSO+27, ch=219, fg=COLOR_CYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_2TALL_DOWN_LEFT_PEN = to_pen{tile=SBSO+38, ch=219, fg=COLOR_CYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_2TALL_DOWN_RIGHT_PEN = to_pen{tile=SBSO+39, ch=219, fg=COLOR_CYAN, bg=COLOR_BLACK}
local SCROLLBAR_UP_LEFT_HOVER_PEN = to_pen{tile=SBSO+2, ch=47, fg=COLOR_LIGHTCYAN, bg=COLOR_BLACK}
local SCROLLBAR_UP_RIGHT_HOVER_PEN = to_pen{tile=SBSO+3, ch=92, fg=COLOR_LIGHTCYAN, bg=COLOR_BLACK}
local SCROLLBAR_DOWN_LEFT_HOVER_PEN = to_pen{tile=SBSO+14, ch=92, fg=COLOR_LIGHTCYAN, bg=COLOR_BLACK}
local SCROLLBAR_DOWN_RIGHT_HOVER_PEN = to_pen{tile=SBSO+15, ch=47, fg=COLOR_LIGHTCYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_UP_LEFT_HOVER_PEN = to_pen{tile=SBSO+8, ch=219, fg=COLOR_LIGHTCYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_UP_RIGHT_HOVER_PEN = to_pen{tile=SBSO+9, ch=219, fg=COLOR_LIGHTCYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_LEFT_HOVER_PEN = to_pen{tile=SBSO+32, ch=219, fg=COLOR_LIGHTCYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_RIGHT_HOVER_PEN = to_pen{tile=SBSO+33, ch=219, fg=COLOR_LIGHTCYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_CENTER_UP_LEFT_HOVER_PEN = to_pen{tile=SBSO+34, ch=219, fg=COLOR_LIGHTCYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_CENTER_UP_RIGHT_HOVER_PEN = to_pen{tile=SBSO+35, ch=219, fg=COLOR_LIGHTCYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_CENTER_DOWN_LEFT_HOVER_PEN = to_pen{tile=SBSO+46, ch=219, fg=COLOR_LIGHTCYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_CENTER_DOWN_RIGHT_HOVER_PEN = to_pen{tile=SBSO+47, ch=219, fg=COLOR_LIGHTCYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_CENTER_LEFT_HOVER_PEN = to_pen{tile=SBSO+20, ch=219, fg=COLOR_LIGHTCYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_CENTER_RIGHT_HOVER_PEN = to_pen{tile=SBSO+21, ch=219, fg=COLOR_LIGHTCYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_DOWN_LEFT_HOVER_PEN = to_pen{tile=SBSO+44, ch=219, fg=COLOR_LIGHTCYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_DOWN_RIGHT_HOVER_PEN = to_pen{tile=SBSO+45, ch=219, fg=COLOR_LIGHTCYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_2TALL_UP_LEFT_HOVER_PEN = to_pen{tile=SBSO+28, ch=219, fg=COLOR_LIGHTCYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_2TALL_UP_RIGHT_HOVER_PEN = to_pen{tile=SBSO+29, ch=219, fg=COLOR_LIGHTCYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_2TALL_DOWN_LEFT_HOVER_PEN = to_pen{tile=SBSO+40, ch=219, fg=COLOR_LIGHTCYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_2TALL_DOWN_RIGHT_HOVER_PEN = to_pen{tile=SBSO+41, ch=219, fg=COLOR_LIGHTCYAN, bg=COLOR_BLACK}
local SCROLLBAR_BAR_BG_LEFT_PEN = to_pen{tile=SBSO+12, ch=176, fg=COLOR_DARKGREY, bg=COLOR_BLACK}
local SCROLLBAR_BAR_BG_RIGHT_PEN = to_pen{tile=SBSO+13, ch=176, fg=COLOR_DARKGREY, bg=COLOR_BLACK}
function Scrollbar:onRenderBody(dc)
-- don't draw if all elements are visible
if not scrollbar_is_visible(self) then
return
end
-- determine which elements should be highlighted
local _,hover_y = self:getMousePos()
local hover_up, hover_down, hover_bar = false, false, false
if hover_y == 0 then
hover_up = true
elseif hover_y == dc.height-1 then
hover_down = true
elseif hover_y then
hover_bar = true
end
-- render up arrow
dc:seek(0, 0)
dc:char(nil, hover_up and SCROLLBAR_UP_LEFT_HOVER_PEN or SCROLLBAR_UP_LEFT_PEN)
dc:char(nil, hover_up and SCROLLBAR_UP_RIGHT_HOVER_PEN or SCROLLBAR_UP_RIGHT_PEN)
-- render scrollbar body
local starty = self.bar_offset + 1
local endy = self.bar_offset + self.bar_height
local midy = (starty + endy)/2
for y=1,dc.height-2 do
dc:seek(0, y)
if y >= starty and y <= endy then
if y == starty and y <= midy - 1 then
dc:char(nil, hover_bar and SCROLLBAR_BAR_UP_LEFT_HOVER_PEN or SCROLLBAR_BAR_UP_LEFT_PEN)
dc:char(nil, hover_bar and SCROLLBAR_BAR_UP_RIGHT_HOVER_PEN or SCROLLBAR_BAR_UP_RIGHT_PEN)
elseif y == midy - 0.5 and self.bar_height == 2 then
dc:char(nil, hover_bar and SCROLLBAR_BAR_2TALL_UP_LEFT_HOVER_PEN or SCROLLBAR_BAR_2TALL_UP_LEFT_PEN)
dc:char(nil, hover_bar and SCROLLBAR_BAR_2TALL_UP_RIGHT_HOVER_PEN or SCROLLBAR_BAR_2TALL_UP_RIGHT_PEN)
elseif y == midy + 0.5 and self.bar_height == 2 then
dc:char(nil, hover_bar and SCROLLBAR_BAR_2TALL_DOWN_LEFT_HOVER_PEN or SCROLLBAR_BAR_2TALL_DOWN_LEFT_PEN)
dc:char(nil, hover_bar and SCROLLBAR_BAR_2TALL_DOWN_RIGHT_HOVER_PEN or SCROLLBAR_BAR_2TALL_DOWN_RIGHT_PEN)
elseif y == midy - 0.5 then
dc:char(nil, hover_bar and SCROLLBAR_BAR_CENTER_UP_LEFT_HOVER_PEN or SCROLLBAR_BAR_CENTER_UP_LEFT_PEN)
dc:char(nil, hover_bar and SCROLLBAR_BAR_CENTER_UP_RIGHT_HOVER_PEN or SCROLLBAR_BAR_CENTER_UP_RIGHT_PEN)
elseif y == midy + 0.5 then
dc:char(nil, hover_bar and SCROLLBAR_BAR_CENTER_DOWN_LEFT_HOVER_PEN or SCROLLBAR_BAR_CENTER_DOWN_LEFT_PEN)
dc:char(nil, hover_bar and SCROLLBAR_BAR_CENTER_DOWN_RIGHT_HOVER_PEN or SCROLLBAR_BAR_CENTER_DOWN_RIGHT_PEN)
elseif y == midy then
dc:char(nil, hover_bar and SCROLLBAR_BAR_CENTER_LEFT_HOVER_PEN or SCROLLBAR_BAR_CENTER_LEFT_PEN)
dc:char(nil, hover_bar and SCROLLBAR_BAR_CENTER_RIGHT_HOVER_PEN or SCROLLBAR_BAR_CENTER_RIGHT_PEN)
elseif y == endy and y >= midy + 1 then
dc:char(nil, hover_bar and SCROLLBAR_BAR_DOWN_LEFT_HOVER_PEN or SCROLLBAR_BAR_DOWN_LEFT_PEN)
dc:char(nil, hover_bar and SCROLLBAR_BAR_DOWN_RIGHT_HOVER_PEN or SCROLLBAR_BAR_DOWN_RIGHT_PEN)
else
dc:char(nil, hover_bar and SCROLLBAR_BAR_LEFT_HOVER_PEN or SCROLLBAR_BAR_LEFT_PEN)
dc:char(nil, hover_bar and SCROLLBAR_BAR_RIGHT_HOVER_PEN or SCROLLBAR_BAR_RIGHT_PEN)
end
else
dc:char(nil, SCROLLBAR_BAR_BG_LEFT_PEN)
dc:char(nil, SCROLLBAR_BAR_BG_RIGHT_PEN)
end
end
-- render down arrow
dc:seek(0, dc.height-1)
dc:char(nil, hover_down and SCROLLBAR_DOWN_LEFT_HOVER_PEN or SCROLLBAR_DOWN_LEFT_PEN)
dc:char(nil, hover_down and SCROLLBAR_DOWN_RIGHT_HOVER_PEN or SCROLLBAR_DOWN_RIGHT_PEN)
if not self.on_scroll then return end
-- manage state for dragging and continuous scrolling
if self.is_dragging then
scrollbar_do_drag(self)
end
if df.global.enabler.mouse_lbut == 0 then
self.last_scroll_ms = 0
self.is_dragging = false
self.scroll_spec = nil
return
end
if self.last_scroll_ms == 0 then return end
local now = dfhack.getTickCount()
local delay = self.is_first_click and
SCROLL_INITIAL_DELAY_MS or SCROLL_DELAY_MS
if now - self.last_scroll_ms >= delay then
self.is_first_click = false
self.on_scroll(self.scroll_spec)
self.last_scroll_ms = now
end
end
function Scrollbar:onInput(keys)
if not self.on_scroll or not scrollbar_is_visible(self) then
return false
end
if self.parent_view:getMousePos() then
if keys.CONTEXT_SCROLL_UP then
self.on_scroll('up_small')
return true
elseif keys.CONTEXT_SCROLL_DOWN then
self.on_scroll('down_small')
return true
elseif keys.CONTEXT_SCROLL_PAGEUP then
self.on_scroll('up_large')
return true
elseif keys.CONTEXT_SCROLL_PAGEDOWN then
self.on_scroll('down_large')
return true
end
end
if not keys._MOUSE_L_DOWN then return false end
local _,y = self:getMousePos()
if not y then return false end
local scroll_spec = nil
if y == 0 then scroll_spec = 'up_small'
elseif y == self.frame_body.height - 1 then scroll_spec = 'down_small'
elseif y <= self.bar_offset then scroll_spec = 'up_large'
elseif y > self.bar_offset + self.bar_height then scroll_spec = 'down_large'
else
self.is_dragging = y - self.bar_offset
return true
end
self.scroll_spec = scroll_spec
self.on_scroll(scroll_spec)
-- reset continuous scroll state
self.is_first_click = true
self.last_scroll_ms = dfhack.getTickCount()
return true
end
-----------
-- Label --
-----------
function parse_label_text(obj)
local text = obj.text or {}
if type(text) ~= 'table' then
text = { text }
end
local curline = nil
local out = { }
local active = nil
local idtab = nil
for _,v in ipairs(text) do
local vv
if type(v) == 'string' then
vv = v:split(NEWLINE)
else
vv = { v }
end
for i = 1,#vv do
local cv = vv[i]
if i > 1 then
if not curline then
table.insert(out, {})
end
curline = nil
end
if cv ~= '' then
if not curline then
curline = {}
table.insert(out, curline)
end
if type(cv) == 'string' then
table.insert(curline, { text = cv })
else
table.insert(curline, cv)
if cv.on_activate then
active = active or {}
table.insert(active, cv)
end
if cv.id then
idtab = idtab or {}
idtab[cv.id] = cv
end
end
end
end
end
obj.text_lines = out
obj.text_active = active
obj.text_ids = idtab
end
local function is_disabled(token)
return (token.disabled ~= nil and getval(token.disabled)) or
(token.enabled ~= nil and not getval(token.enabled))
end
-- Make the hover pen -- that is a pen that should render elements that has the
-- mouse hovering over it. if hpen is specified, it just checks the fields and
-- returns it (in parsed pen form)
local function make_hpen(pen, hpen)
if not hpen then
pen = dfhack.pen.parse(pen)
-- Swap the foreground and background
hpen = dfhack.pen.make(pen.bg, nil, pen.fg + (pen.bold and 8 or 0))
end
-- text_hpen needs a character in order to paint the background using
-- Painter:fill(), so let's make it paint a space to show the background
-- color
local hpen_parsed = dfhack.pen.parse(hpen)
hpen_parsed.ch = string.byte(' ')
return hpen_parsed
end
function render_text(obj,dc,x0,y0,pen,dpen,disabled,hpen,hovered)
local width = 0
for iline = dc and obj.start_line_num or 1, #obj.text_lines do
local x, line = 0, obj.text_lines[iline]
if dc then
local offset = (obj.start_line_num or 1) - 1
local y = y0 + iline - offset - 1
-- skip text outside of the containing frame
if y > dc.height - 1 then break end
dc:seek(x+x0, y)
end
for _,token in ipairs(line) do
token.line = iline
token.x1 = x
if token.gap then
x = x + token.gap
if dc then
dc:advance(token.gap)
end
end
if token.tile or (hovered and token.htile) then
x = x + 1
if dc then
local tile = hovered and getval(token.htile or token.tile) or getval(token.tile)
local tile_pen = tonumber(tile) and to_pen{tile=tile} or tile
dc:char(nil, tile_pen)
if token.width then
dc:advance(token.width-1)
end
end
end
if token.text or token.key then
local text = ''..(getval(token.text) or '')
local keypen = to_pen(token.key_pen or COLOR_LIGHTGREEN)
if dc then
local tpen = getval(token.pen)
local dcpen = to_pen(tpen or pen)
-- If disabled, figure out which dpen to use
if disabled or is_disabled(token) then
dcpen = to_pen(getval(token.dpen) or tpen or dpen)
if keypen.fg ~= COLOR_BLACK then
keypen.bold = false
end
-- if hovered *and* disabled, combine both effects
if hovered then
dcpen = make_hpen(dcpen)
end
elseif hovered then
dcpen = make_hpen(dcpen, getval(token.hpen) or hpen)
end
dc:pen(dcpen)
end
local width = getval(token.width)
local padstr
if width then
x = x + width
if #text > width then
text = string.sub(text,1,width)
else
if token.pad_char then
padstr = string.rep(token.pad_char,width-#text)
end
if dc and token.rjustify then
if padstr then dc:string(padstr) else dc:advance(width-#text) end
end
end
else
x = x + #text
end
if token.key then
if type(token.key) == 'string' and not df.interface_key[token.key] then
error('Invalid interface_key: ' .. token.key)
end
local keystr = gui.getKeyDisplay(token.key)
local sep = token.key_sep or ''
x = x + #keystr
if sep:startswith('()') then
if dc then
dc:string(text)
dc:string(' ('):string(keystr,keypen)
dc:string(sep:sub(2))
end
x = x + 1 + #sep
else
if dc then
dc:string(keystr,keypen):string(sep):string(text)
end
x = x + #sep
end
else
if dc then
dc:string(text)
end
end
if width and dc and not token.rjustify then
if padstr then dc:string(padstr) else dc:advance(width-#text) end
end
end
token.x2 = x
end
width = math.max(width, x)
end
obj.text_width = width
end
function check_text_keys(self, keys)
if self.text_active then
for _,item in ipairs(self.text_active) do
if item.key and keys[item.key] and not is_disabled(item) then
item.on_activate()
return true
end
end
end
end
Label = defclass(Label, Widget)
Label.ATTRS{
text_pen = COLOR_WHITE,
text_dpen = COLOR_DARKGREY, -- disabled
text_hpen = DEFAULT_NIL, -- hover - default is to invert the fg/bg colors
disabled = DEFAULT_NIL,
enabled = DEFAULT_NIL,
auto_height = true,
auto_width = false,
on_click = DEFAULT_NIL,
on_rclick = DEFAULT_NIL,
scroll_keys = STANDARDSCROLL,
}
function Label:init(args)
self.scrollbar = Scrollbar{
frame={r=0},
on_scroll=self:callback('on_scrollbar')}
self:addviews{self.scrollbar}
self:setText(args.text or self.text)
end
local function update_label_scrollbar(label)
local body_height = label.frame_body and label.frame_body.height or 1
label.scrollbar:update(label.start_line_num, body_height,
label:getTextHeight())
end
function Label:setText(text)
self.start_line_num = 1
self.text = text
parse_label_text(self)
if self.auto_height then
self.frame = self.frame or {}
self.frame.h = self:getTextHeight()
end
update_label_scrollbar(self)
end
function Label:preUpdateLayout()
if self.auto_width then
self.frame = self.frame or {}
self.frame.w = self:getTextWidth()
end
end
function Label:postUpdateLayout()
update_label_scrollbar(self)
end
function Label:itemById(id)
if self.text_ids then
return self.text_ids[id]
end
end
function Label:getTextHeight()
return #self.text_lines
end
function Label:getTextWidth()
render_text(self)
return self.text_width
end
-- Overridden by subclasses that also want to add new mouse handlers, see
-- HotkeyLabel.
function Label:shouldHover()
return self.on_click or self.on_rclick
end
function Label:onRenderBody(dc)
local text_pen = self.text_pen
local hovered = self:getMousePos() and self:shouldHover()
render_text(self,dc,0,0,text_pen,self.text_dpen,is_disabled(self), self.text_hpen, hovered)
end
function Label:on_scrollbar(scroll_spec)
local v = 0
if tonumber(scroll_spec) then
v = scroll_spec - self.start_line_num
elseif scroll_spec == 'down_large' then
v = '+halfpage'
elseif scroll_spec == 'up_large' then
v = '-halfpage'
elseif scroll_spec == 'down_small' then
v = 1
elseif scroll_spec == 'up_small' then
v = -1
end
self:scroll(v)
end
function Label:scroll(nlines)
if not nlines then return end
local text_height = math.max(1, self:getTextHeight())
if type(nlines) == 'string' then
if nlines == '+page' then
nlines = self.frame_body.height
elseif nlines == '-page' then
nlines = -self.frame_body.height
elseif nlines == '+halfpage' then
nlines = math.ceil(self.frame_body.height/2)
elseif nlines == '-halfpage' then
nlines = -math.ceil(self.frame_body.height/2)
elseif nlines == 'home' then
nlines = 1 - self.start_line_num
elseif nlines == 'end' then
nlines = text_height
else
error(('unhandled scroll keyword: "%s"'):format(nlines))
end
end
local n = self.start_line_num + nlines
n = math.min(n, text_height - self.frame_body.height + 1)
n = math.max(n, 1)
nlines = n - self.start_line_num
self.start_line_num = n
update_label_scrollbar(self)
return nlines
end
function Label:onInput(keys)
if is_disabled(self) then return false end
if self:inputToSubviews(keys) then
return true
end
if keys._MOUSE_L_DOWN and self:getMousePos() and self.on_click then
self.on_click()
return true
end
if keys._MOUSE_R_DOWN and self:getMousePos() and self.on_rclick then
self.on_rclick()
return true
end
for k,v in pairs(self.scroll_keys) do
if keys[k] and 0 ~= self:scroll(v) then
return true
end
end
return check_text_keys(self, keys)
end
------------------
-- WrappedLabel --
------------------
WrappedLabel = defclass(WrappedLabel, Label)
WrappedLabel.ATTRS{
text_to_wrap=DEFAULT_NIL,
indent=0,
}
function WrappedLabel:getWrappedText(width)
-- 0 width can happen if the parent has 0 width
if not self.text_to_wrap or width <= 0 then return nil end
local text_to_wrap = getval(self.text_to_wrap)
if type(text_to_wrap) == 'table' then
text_to_wrap = table.concat(text_to_wrap, NEWLINE)
end
return text_to_wrap:wrap(width - self.indent)
end
function WrappedLabel:preUpdateLayout()
self.saved_start_line_num = self.start_line_num
end
-- we can't set the text in init() since we may not yet have a frame that we
-- can get wrapping bounds from.
function WrappedLabel:postComputeFrame()
local wrapped_text = self:getWrappedText(self.frame_body.width-3)
if not wrapped_text then return end
local text = {}
for _,line in ipairs(wrapped_text:split(NEWLINE)) do
table.insert(text, {gap=self.indent, text=line})
-- a trailing newline will get ignored so we don't have to manually trim
table.insert(text, NEWLINE)
end
self:setText(text)
self:scroll(self.saved_start_line_num - 1)
end
------------------
-- TooltipLabel --
------------------
TooltipLabel = defclass(TooltipLabel, WrappedLabel)
TooltipLabel.ATTRS{
show_tooltip=DEFAULT_NIL,
indent=2,
text_pen=COLOR_GREY,
}
function TooltipLabel:init()
self.visible = self.show_tooltip
end
-----------------
-- HotkeyLabel --
-----------------
HotkeyLabel = defclass(HotkeyLabel, Label)
HotkeyLabel.ATTRS{
key=DEFAULT_NIL,
key_sep=': ',
label=DEFAULT_NIL,
on_activate=DEFAULT_NIL,
}
function HotkeyLabel:init()
self:initializeLabel()
end
function HotkeyLabel:setOnActivate(on_activate)
self.on_activate = on_activate
self:initializeLabel()
end
function HotkeyLabel:setLabel(label)
self.label = label
self:initializeLabel()
end
function HotkeyLabel:shouldHover()
-- When on_activate is set, text should also hover on mouseover
return self.on_activate or HotkeyLabel.super.shouldHover(self)
end
function HotkeyLabel:initializeLabel()
self:setText{{key=self.key, key_sep=self.key_sep, text=self.label,
on_activate=self.on_activate}}
end
function HotkeyLabel:onInput(keys)
if HotkeyLabel.super.onInput(self, keys) then
return true
elseif keys._MOUSE_L_DOWN and self:getMousePos() and self.on_activate
and not is_disabled(self) then
self.on_activate()
return true
end
end
----------------------
-- CycleHotkeyLabel --
----------------------
CycleHotkeyLabel = defclass(CycleHotkeyLabel, Label)
CycleHotkeyLabel.ATTRS{
key=DEFAULT_NIL,
key_back=DEFAULT_NIL,
key_sep=': ',
val_gap=1,
label=DEFAULT_NIL,
label_width=DEFAULT_NIL,
label_below=false,
options=DEFAULT_NIL,
initial_option=1,
on_change=DEFAULT_NIL,
}
function CycleHotkeyLabel:init()
self:setOption(self.initial_option)
if self.label_below then
self.val_gap = 0 + (self.key_back and 1 or 0) + (self.key and 3 or 0)
end
self:setText{
self.key_back ~= nil and {key=self.key_back, key_sep='', width=0, on_activate=self:callback('cycle', true)} or {},
{key=self.key, key_sep=self.key_sep, text=self.label, width=self.label_width,
on_activate=self:callback('cycle')},
self.label_below and NEWLINE or '',
{gap=self.val_gap, text=self:callback('getOptionLabel'),
pen=self:callback('getOptionPen')},
}
end
-- CycleHotkeyLabels are always clickable and therefore should always change
-- color when hovered.
function CycleHotkeyLabel:shouldHover()
return true
end
function CycleHotkeyLabel:cycle(backwards)
local old_option_idx = self.option_idx
if self.option_idx == #self.options and not backwards then
self.option_idx = 1
elseif self.option_idx == 1 and backwards then
self.option_idx = #self.options
else
self.option_idx = self.option_idx + (not backwards and 1 or -1)
end
if self.on_change then
self.on_change(self:getOptionValue(),
self:getOptionValue(old_option_idx))
end
end
function CycleHotkeyLabel:setOption(value_or_index, call_on_change)
local option_idx = nil
for i in ipairs(self.options) do
if value_or_index == self:getOptionValue(i) then
option_idx = i
break
end
end
if not option_idx then
if self.options[value_or_index] then
option_idx = value_or_index
end
end
if not option_idx then
error(('cannot find option with value or index: "%s"')
:format(value_or_index))
end
local old_option_idx = self.option_idx
self.option_idx = option_idx
if call_on_change and self.on_change then
self.on_change(self:getOptionValue(),
self:getOptionValue(old_option_idx))
end
end
local function cyclehotkeylabel_getOptionElem(self, option_idx, key, require_key)
option_idx = option_idx or self.option_idx
local option = self.options[option_idx]
if type(option) == 'table' then
return option[key]
end
return not require_key and option or nil
end
function CycleHotkeyLabel:getOptionLabel(option_idx)
return getval(cyclehotkeylabel_getOptionElem(self, option_idx, 'label'))
end
function CycleHotkeyLabel:getOptionValue(option_idx)
return cyclehotkeylabel_getOptionElem(self, option_idx, 'value')
end
function CycleHotkeyLabel:getOptionPen(option_idx)
local pen = getval(cyclehotkeylabel_getOptionElem(self, option_idx, 'pen', true))
if type(pen) == 'string' then return nil end
return pen
end
function CycleHotkeyLabel:onInput(keys)
if CycleHotkeyLabel.super.onInput(self, keys) then
return true
elseif keys._MOUSE_L_DOWN and self:getMousePos() and not is_disabled(self) then
self:cycle()
return true
end
end
-----------------------
-- ToggleHotkeyLabel --
-----------------------
ToggleHotkeyLabel = defclass(ToggleHotkeyLabel, CycleHotkeyLabel)
ToggleHotkeyLabel.ATTRS{
options={{label='On', value=true, pen=COLOR_GREEN},
{label='Off', value=false}},
}
----------
-- List --
----------
List = defclass(List, Widget)
List.ATTRS{
text_pen = COLOR_CYAN,
text_hpen = DEFAULT_NIL, -- hover color, defaults to inverting the FG/BG pens for each text object
cursor_pen = COLOR_LIGHTCYAN,
inactive_pen = DEFAULT_NIL,
on_select = DEFAULT_NIL,
on_submit = DEFAULT_NIL,
on_submit2 = DEFAULT_NIL,
on_double_click = DEFAULT_NIL,
on_double_click2 = DEFAULT_NIL,
row_height = 1,
scroll_keys = STANDARDSCROLL,
icon_width = DEFAULT_NIL,
}
function List:init(info)
self.page_top = 1
self.page_size = 1
self.scrollbar = Scrollbar{
frame={r=0},
on_scroll=self:callback('on_scrollbar')}
self:addviews{self.scrollbar}
if info.choices then
self:setChoices(info.choices, info.selected)
else
self.choices = {}
self.selected = 1
end
self.last_select_click_ms = 0 -- used to track double-clicking on an item
end
function List:setChoices(choices, selected)
self.choices = {}
for i,v in ipairs(choices or {}) do
local l = utils.clone(v);
if type(v) ~= 'table' then
l = { text = v }
else
l.text = v.text or v.caption or v[1]
end
parse_label_text(l)
self.choices[i] = l
end
self:setSelected(selected)
end
function List:setSelected(selected)
self.selected = selected or self.selected or 1
self:moveCursor(0, true)
return self.selected
end
function List:getChoices()
return self.choices
end
function List:getSelected()
if #self.choices > 0 then
return self.selected, self.choices[self.selected]
end
end
function List:getContentWidth()
local width = 0
for i,v in ipairs(self.choices) do
render_text(v)
local roww = v.text_width
if v.key then
roww = roww + 3 + #gui.getKeyDisplay(v.key)
end
width = math.max(width, roww)
end
return width + (self.icon_width or 0)
end
function List:getContentHeight()
return #self.choices * self.row_height
end
local function update_list_scrollbar(list)
list.scrollbar:update(list.page_top, list.page_size, #list.choices)
end
function List:postComputeFrame(body)
self.page_size = math.max(1, math.floor(body.height / self.row_height))
if #self.choices - self.page_size < 0 then
self.page_top = 1
end
update_list_scrollbar(self)
end
function List:postUpdateLayout()
update_list_scrollbar(self)
end
function List:moveCursor(delta, force_cb)
local cnt = #self.choices
if cnt < 1 then
self.page_top = 1
self.selected = 1
update_list_scrollbar(self)
if force_cb and self.on_select then
self.on_select(nil,nil)
end
return
end
local off = self.selected+delta-1
local ds = math.abs(delta)
if ds > 1 then
if off >= cnt+ds-1 then
off = 0
else
off = math.min(cnt-1, off)
end
if off <= -ds then
off = cnt-1
else
off = math.max(0, off)
end
end
local buffer = 1 + math.min(4, math.floor(self.page_size/10))
self.selected = 1 + off % cnt
if (self.selected - buffer) < self.page_top then
self.page_top = math.max(1, self.selected - buffer)
elseif (self.selected + buffer + 1) > (self.page_top + self.page_size) then
local max_page_top = cnt - self.page_size + 1
self.page_top = math.max(1,
math.min(max_page_top, self.selected - self.page_size + buffer + 1))
end
update_list_scrollbar(self)
if (force_cb or delta ~= 0) and self.on_select then
self.on_select(self:getSelected())
end
end
function List:on_scrollbar(scroll_spec)
local v = 0
if tonumber(scroll_spec) then
v = scroll_spec - self.page_top
elseif scroll_spec == 'down_large' then
v = math.ceil(self.page_size / 2)
elseif scroll_spec == 'up_large' then
v = -math.ceil(self.page_size / 2)
elseif scroll_spec == 'down_small' then
v = 1
elseif scroll_spec == 'up_small' then
v = -1
end
local max_page_top = math.max(1, #self.choices - self.page_size + 1)
self.page_top = math.max(1, math.min(max_page_top, self.page_top + v))
update_list_scrollbar(self)
end
function List:onRenderBody(dc)
local choices = self.choices
local top = self.page_top
local iend = math.min(#choices, top+self.page_size-1)
local iw = self.icon_width
local function paint_icon(icon, obj)
if type(icon) ~= 'string' then
dc:char(nil,icon)
else
if current then
dc:string(icon, obj.icon_pen or self.icon_pen or cur_pen)
else
dc:string(icon, obj.icon_pen or self.icon_pen or cur_dpen)
end
end
end
local hoveridx = self:getIdxUnderMouse()
for i = top,iend do
local obj = choices[i]
local current = (i == self.selected)
local hovered = (i == hoveridx)
-- cur_pen and cur_dpen can't be integers or background colors get
-- messed up in render_text for subsequent renders
local cur_pen = to_pen(self.cursor_pen)
local cur_dpen = to_pen(self.text_pen)
local active_pen = (current and cur_pen or cur_dpen)
if not getval(self.active) then
cur_pen = self.inactive_pen or self.cursor_pen
end
local y = (i - top)*self.row_height
local icon = getval(obj.icon)
if iw and icon then
dc:seek(0, y):pen(active_pen)
paint_icon(icon, obj)
end
render_text(obj, dc, iw or 0, y, cur_pen, cur_dpen, not current, self.text_hpen, hovered)
local ip = dc.width
if obj.key then
local keystr = gui.getKeyDisplay(obj.key)
ip = ip-3-#keystr
dc:seek(ip,y):pen(self.text_pen)
dc:string('('):string(keystr,COLOR_LIGHTGREEN):string(')')
end
if icon and not iw then
dc:seek(ip-1,y):pen(active_pen)
paint_icon(icon, obj)
end
end
end
function List:getIdxUnderMouse()
if self.scrollbar:getMousePos() then return end
local _,mouse_y = self:getMousePos()
if mouse_y and #self.choices > 0 and
mouse_y < (#self.choices-self.page_top+1) * self.row_height then
return self.page_top + math.floor(mouse_y/self.row_height)
end
end
function List:submit()
if self.on_submit and #self.choices > 0 then
self.on_submit(self:getSelected())
return true
end
end
function List:submit2()
if self.on_submit2 and #self.choices > 0 then
self.on_submit2(self:getSelected())
return true
end
end
function List:double_click()
if #self.choices == 0 then return end
local cb = dfhack.internal.getModifiers().shift and
self.on_double_click2 or self.on_double_click
if cb then
cb(self:getSelected())
return true
end
end
function List:onInput(keys)
if self:inputToSubviews(keys) then
return true
end
if keys.SELECT then
return self:submit()
elseif keys.CUSTOM_SHIFT_ENTER then
return self:submit2()
elseif keys._MOUSE_L_DOWN then
local idx = self:getIdxUnderMouse()
if idx then
local now_ms = dfhack.getTickCount()
if idx ~= self:getSelected() then
self.last_select_click_ms = now_ms
else
if now_ms - self.last_select_click_ms <= DOUBLE_CLICK_MS then
self.last_select_click_ms = 0
if self:double_click() then return true end
else
self.last_select_click_ms = now_ms
end
end
self:setSelected(idx)
if dfhack.internal.getModifiers().shift then
self:submit2()
else
self:submit()
end
return true
end
else
for k,v in pairs(self.scroll_keys) do
if keys[k] then
if v == '+page' then
v = self.page_size
elseif v == '-page' then
v = -self.page_size
end
self:moveCursor(v)
return true
end
end
for i,v in ipairs(self.choices) do
if v.key and keys[v.key] then
self:setSelected(i)
self:submit()
return true
end
end
local current = self.choices[self.selected]
if current then
return check_text_keys(current, keys)
end
end
end
-------------------
-- Filtered List --
-------------------
FilteredList = defclass(FilteredList, Widget)
FilteredList.ATTRS {
case_sensitive = false,
edit_below = false,
edit_key = DEFAULT_NIL,
edit_ignore_keys = DEFAULT_NIL,
edit_on_char = DEFAULT_NIL,
edit_on_change = DEFAULT_NIL,
}
function FilteredList:init(info)
local on_char = self:callback('onFilterChar')
if self.edit_on_char then
on_char = function(c, text)
return self.edit_on_char(c, text) and self:onFilterChar(c, text)
end
end
local on_change = self:callback('onFilterChange')
if self.edit_on_change then
on_change = function(text)
self.edit_on_change(text)
self:onFilterChange(text)
end
end
self.edit = EditField{
text_pen = info.edit_pen or info.cursor_pen,
frame = { l = info.icon_width, t = 0, h = 1 },
on_change = on_change,
on_char = on_char,
key = self.edit_key,
ignore_keys = self.edit_ignore_keys,
}
self.list = List{
frame = { t = 2 },
text_pen = info.text_pen,
cursor_pen = info.cursor_pen,
inactive_pen = info.inactive_pen,
icon_pen = info.icon_pen,
row_height = info.row_height,
scroll_keys = info.scroll_keys,
icon_width = info.icon_width,
}
if self.edit_below then
self.edit.frame = { l = info.icon_width, b = 0, h = 1 }
self.list.frame = { t = 0, b = 2 }
end
if info.on_select then
self.list.on_select = function()
return info.on_select(self:getSelected())
end
end
if info.on_submit then
self.list.on_submit = function()
return info.on_submit(self:getSelected())
end
end
if info.on_submit2 then
self.list.on_submit2 = function()
return info.on_submit2(self:getSelected())
end
end
if info.on_double_click then
self.list.on_double_click = function()
return info.on_double_click(self:getSelected())
end
end
if info.on_double_click2 then
self.list.on_double_click2 = function()
return info.on_double_click2(self:getSelected())
end
end
self.not_found = Label{
visible = true,
text = info.not_found_label or 'No matches',
text_pen = COLOR_LIGHTRED,
frame = { l = info.icon_width, t = self.list.frame.t },
}
self:addviews{ self.edit, self.list, self.not_found }
if info.choices then
self:setChoices(info.choices, info.selected)
else
self.choices = {}
end
end
function FilteredList:getChoices()
return self.choices
end
function FilteredList:getVisibleChoices()
return self.list.choices
end
function FilteredList:setChoices(choices, pos)
choices = choices or {}
self.edit:setText('')
self.list:setChoices(choices, pos)
self.choices = self.list.choices
self.not_found.visible = (#choices == 0)
end
function FilteredList:submit()
return self.list:submit()
end
function FilteredList:submit2()
return self.list:submit2()
end
function FilteredList:canSubmit()
return not self.not_found.visible
end
function FilteredList:getSelected()
local i,v = self.list:getSelected()
if i then
return map_opttab(self.choice_index, i), v
end
end
function FilteredList:getContentWidth()
return self.list:getContentWidth()
end
function FilteredList:getContentHeight()
return self.list:getContentHeight() + 2
end
function FilteredList:getFilter()
return self.edit.text, self.list.choices
end
function FilteredList:setFilter(filter, pos)
local choices = self.choices
local cidx = nil
filter = filter or ''
if filter ~= self.edit.text then
self.edit:setText(filter)
end
if filter ~= '' then
local tokens = filter:split()
local ipos = pos
choices = {}
cidx = {}
pos = nil
for i,v in ipairs(self.choices) do
local ok = true
local search_key = v.search_key
if not search_key then
if type(v.text) ~= 'table' then
search_key = v.text
else
local texts = {}
for _,token in ipairs(v.text) do
table.insert(texts,
type(token) == 'string' and token
or getval(token.text) or '')
end
search_key = table.concat(texts, ' ')
end
end
for _,key in ipairs(tokens) do
key = key:escape_pattern()
-- start matches at non-space or non-punctuation. this allows
-- punctuation itself to be matched if that is useful (e.g.
-- filenames or parameter names)
if key ~= '' then
if not self.case_sensitive then
search_key = string.lower(search_key)
key = string.lower(key)
end
if not search_key:match('%f[^%p\x00]'..key) and
not search_key:match('%f[^%s\x00]'..key) then
ok = false
break
end
end
end
if ok then
table.insert(choices, v)
cidx[#choices] = i
if ipos == i then
pos = #choices
end
end
end
end
self.choice_index = cidx
self.list:setChoices(choices, pos)
self.not_found.visible = (#choices == 0)
end
function FilteredList:onFilterChange(text)
self:setFilter(text)
end
function FilteredList:onFilterChar(char, text)
if char == ' ' then
return string.match(text, '%S$')
end
return true
end
local DEFAULT_ACTIVE_TAB_PENS = {
text_mode_tab_pen=to_pen{fg=COLOR_YELLOW},
text_mode_label_pen=to_pen{fg=COLOR_WHITE},
lt=to_pen{tile=1005, write_to_lower=true},
lt2=to_pen{tile=1006, write_to_lower=true},
t=to_pen{tile=1007, fg=COLOR_BLACK, write_to_lower=true, top_of_text=true},
rt2=to_pen{tile=1008, write_to_lower=true},
rt=to_pen{tile=1009, write_to_lower=true},
lb=to_pen{tile=1015, write_to_lower=true},
lb2=to_pen{tile=1016, write_to_lower=true},
b=to_pen{tile=1017, fg=COLOR_BLACK, write_to_lower=true, bottom_of_text=true},
rb2=to_pen{tile=1018, write_to_lower=true},
rb=to_pen{tile=1019, write_to_lower=true},
}
local DEFAULT_INACTIVE_TAB_PENS = {
text_mode_tab_pen=to_pen{fg=COLOR_BROWN},
text_mode_label_pen=to_pen{fg=COLOR_DARKGREY},
lt=to_pen{tile=1000, write_to_lower=true},
lt2=to_pen{tile=1001, write_to_lower=true},
t=to_pen{tile=1002, fg=COLOR_WHITE, write_to_lower=true, top_of_text=true},
rt2=to_pen{tile=1003, write_to_lower=true},
rt=to_pen{tile=1004, write_to_lower=true},
lb=to_pen{tile=1010, write_to_lower=true},
lb2=to_pen{tile=1011, write_to_lower=true},
b=to_pen{tile=1012, fg=COLOR_WHITE, write_to_lower=true, bottom_of_text=true},
rb2=to_pen{tile=1013, write_to_lower=true},
rb=to_pen{tile=1014, write_to_lower=true},
}
---------
-- Tab --
---------
Tab = defclass(Tabs, Widget)
Tab.ATTRS{
id=DEFAULT_NIL,
label=DEFAULT_NIL,
on_select=DEFAULT_NIL,
get_pens=DEFAULT_NIL,
}
function Tab:preinit(init_table)
init_table.frame = init_table.frame or {}
init_table.frame.w = #init_table.label + 4
init_table.frame.h = 2
end
function Tab:onRenderBody(dc)
local pens = self.get_pens()
dc:seek(0, 0)
if dfhack.screen.inGraphicsMode() then
dc:char(nil, pens.lt):char(nil, pens.lt2)
for i=1,#self.label do
dc:char(self.label:sub(i,i), pens.t)
end
dc:char(nil, pens.rt2):char(nil, pens.rt)
dc:seek(0, 1)
dc:char(nil, pens.lb):char(nil, pens.lb2)
for i=1,#self.label do
dc:char(self.label:sub(i,i), pens.b)
end
dc:char(nil, pens.rb2):char(nil, pens.rb)
else
local tp = pens.text_mode_tab_pen
dc:char(' ', tp):char('/', tp)
for i=1,#self.label do
dc:char('-', tp)
end
dc:char('\\', tp):char(' ', tp)
dc:seek(0, 1)
dc:char('/', tp):char('-', tp)
dc:string(self.label, pens.text_mode_label_pen)
dc:char('-', tp):char('\\', tp)
end
end
function Tab:onInput(keys)
if Tab.super.onInput(self, keys) then return true end
if keys._MOUSE_L_DOWN and self:getMousePos() then
self.on_select(self.id)
return true
end
end
-------------
-- Tab Bar --
-------------
TabBar = defclass(TabBar, ResizingPanel)
TabBar.ATTRS{
labels=DEFAULT_NIL,
on_select=DEFAULT_NIL,
get_cur_page=DEFAULT_NIL,
active_tab_pens=DEFAULT_ACTIVE_TAB_PENS,
inactive_tab_pens=DEFAULT_INACTIVE_TAB_PENS,
get_pens=DEFAULT_NIL,
key=DEFAULT_NIL,
key_back=DEFAULT_NIL,
}
function TabBar:init()
for idx,label in ipairs(self.labels) do
self:addviews{
Tab{
frame={t=0, l=0},
id=idx,
label=label,
on_select=self.on_select,
get_pens=self.get_pens and function()
return self.get_pens(idx, self)
end or function()
if self.get_cur_page() == idx then
return self.active_tab_pens
end
return self.inactive_tab_pens
end,
}
}
end
end
function TabBar:postComputeFrame(body)
local t, l, width = 0, 0, body.width
for _,tab in ipairs(self.subviews) do
if l > 0 and l + tab.frame.w > width then
t = t + 2
l = 0
end
tab.frame.t = t
tab.frame.l = l
l = l + tab.frame.w
end
end
function TabBar:onInput(keys)
if TabBar.super.onInput(self, keys) then return true end
if self.key and keys[self.key] then
local zero_idx = self.get_cur_page() - 1
local next_zero_idx = (zero_idx + 1) % #self.labels
self.on_select(next_zero_idx + 1)
return true
end
if self.key_back and keys[self.key_back] then
local zero_idx = self.get_cur_page() - 1
local prev_zero_idx = (zero_idx - 1) % #self.labels
self.on_select(prev_zero_idx + 1)
return true
end
end
--------------------------------
-- RangeSlider
--
RangeSlider = defclass(RangeSlider, Widget)
RangeSlider.ATTRS{
num_stops=DEFAULT_NIL,
get_left_idx_fn=DEFAULT_NIL,
get_right_idx_fn=DEFAULT_NIL,
on_left_change=DEFAULT_NIL,
on_right_change=DEFAULT_NIL,
}
function RangeSlider:preinit(init_table)
init_table.frame = init_table.frame or {}
init_table.frame.h = init_table.frame.h or 1
end
function RangeSlider:init()
if self.num_stops < 2 then error('too few RangeSlider stops') end
self.is_dragging_target = nil -- 'left', 'right', or 'both'
self.is_dragging_idx = nil -- offset from leftmost dragged tile
end
local function rangeslider_get_width_per_idx(self)
return math.max(5, (self.frame_body.width-7) // (self.num_stops-1))
end
function RangeSlider:onInput(keys)
if not keys._MOUSE_L_DOWN then return false end
local x = self:getMousePos()
if not x then return false end
local left_idx, right_idx = self.get_left_idx_fn(), self.get_right_idx_fn()
local width_per_idx = rangeslider_get_width_per_idx(self)
local left_pos = width_per_idx*(left_idx-1)
local right_pos = width_per_idx*(right_idx-1) + 4
if x < left_pos then
self.on_left_change(self.get_left_idx_fn() - 1)
elseif x < left_pos+3 then
self.is_dragging_target = 'left'
self.is_dragging_idx = x - left_pos
elseif x < right_pos then
self.is_dragging_target = 'both'
self.is_dragging_idx = x - left_pos
elseif x < right_pos+3 then
self.is_dragging_target = 'right'
self.is_dragging_idx = x - right_pos
else
self.on_right_change(self.get_right_idx_fn() + 1)
end
return true
end
local function rangeslider_do_drag(self, width_per_idx)
local x = self.frame_body:localXY(dfhack.screen.getMousePos())
local cur_pos = x - self.is_dragging_idx
cur_pos = math.max(0, cur_pos)
cur_pos = math.min(width_per_idx*(self.num_stops-1)+7, cur_pos)
local offset = self.is_dragging_target == 'right' and -2 or 1
local new_idx = math.max(0, cur_pos+offset)//width_per_idx + 1
local new_left_idx, new_right_idx
if self.is_dragging_target == 'right' then
new_right_idx = new_idx
else
new_left_idx = new_idx
if self.is_dragging_target == 'both' then
new_right_idx = new_left_idx + self.get_right_idx_fn() - self.get_left_idx_fn()
if new_right_idx > self.num_stops then
return
end
end
end
if new_left_idx and new_left_idx ~= self.get_left_idx_fn() then
self.on_left_change(new_left_idx)
end
if new_right_idx and new_right_idx ~= self.get_right_idx_fn() then
self.on_right_change(new_right_idx)
end
end
local SLIDER_LEFT_END = to_pen{ch=198, fg=COLOR_GREY, bg=COLOR_BLACK}
local SLIDER_TRACK = to_pen{ch=205, fg=COLOR_GREY, bg=COLOR_BLACK}
local SLIDER_TRACK_SELECTED = to_pen{ch=205, fg=COLOR_LIGHTGREEN, bg=COLOR_BLACK}
local SLIDER_TRACK_STOP = to_pen{ch=216, fg=COLOR_GREY, bg=COLOR_BLACK}
local SLIDER_TRACK_STOP_SELECTED = to_pen{ch=216, fg=COLOR_LIGHTGREEN, bg=COLOR_BLACK}
local SLIDER_RIGHT_END = to_pen{ch=181, fg=COLOR_GREY, bg=COLOR_BLACK}
local SLIDER_TAB_LEFT = to_pen{ch=60, fg=COLOR_BLACK, bg=COLOR_YELLOW}
local SLIDER_TAB_CENTER = to_pen{ch=9, fg=COLOR_BLACK, bg=COLOR_YELLOW}
local SLIDER_TAB_RIGHT = to_pen{ch=62, fg=COLOR_BLACK, bg=COLOR_YELLOW}
function RangeSlider:onRenderBody(dc, rect)
local left_idx, right_idx = self.get_left_idx_fn(), self.get_right_idx_fn()
local width_per_idx = rangeslider_get_width_per_idx(self)
-- draw track
dc:seek(1,0)
dc:char(nil, SLIDER_LEFT_END)
dc:char(nil, SLIDER_TRACK)
for stop_idx=1,self.num_stops-1 do
local track_stop_pen = SLIDER_TRACK_STOP_SELECTED
local track_pen = SLIDER_TRACK_SELECTED
if left_idx > stop_idx or right_idx < stop_idx then
track_stop_pen = SLIDER_TRACK_STOP
track_pen = SLIDER_TRACK
elseif right_idx == stop_idx then
track_pen = SLIDER_TRACK
end
dc:char(nil, track_stop_pen)
for i=2,width_per_idx do
dc:char(nil, track_pen)
end
end
if right_idx >= self.num_stops then
dc:char(nil, SLIDER_TRACK_STOP_SELECTED)
else
dc:char(nil, SLIDER_TRACK_STOP)
end
dc:char(nil, SLIDER_TRACK)
dc:char(nil, SLIDER_RIGHT_END)
-- draw tabs
dc:seek(width_per_idx*(left_idx-1))
dc:char(nil, SLIDER_TAB_LEFT)
dc:char(nil, SLIDER_TAB_CENTER)
dc:char(nil, SLIDER_TAB_RIGHT)
dc:seek(width_per_idx*(right_idx-1)+4)
dc:char(nil, SLIDER_TAB_LEFT)
dc:char(nil, SLIDER_TAB_CENTER)
dc:char(nil, SLIDER_TAB_RIGHT)
-- manage dragging
if self.is_dragging_target then
rangeslider_do_drag(self, width_per_idx)
end
if df.global.enabler.mouse_lbut == 0 then
self.is_dragging_target = nil
self.is_dragging_idx = nil
end
end
return _ENV
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