dfhack/plugins/lua/hotkeys.lua

245 lines
7.4 KiB
Lua

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local _ENV = mkmodule('plugins.hotkeys')
local gui = require('gui')
local helpdb = require('helpdb')
local overlay = require('plugins.overlay')
local widgets = require('gui.widgets')
-- ----------------- --
-- HotspotMenuWidget --
-- ----------------- --
HotspotMenuWidget = defclass(HotspotMenuWidget, overlay.OverlayWidget)
HotspotMenuWidget.ATTRS{
default_pos={x=1,y=3},
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hotspot=true,
viewscreens={'dwarfmode'},
overlay_onupdate_max_freq_seconds=0,
frame={w=2, h=1}
}
function HotspotMenuWidget:init()
self:addviews{widgets.Label{text='!!'}}
self.mouseover = false
end
function HotspotMenuWidget:overlay_onupdate()
local hasMouse = self:getMousePos()
if hasMouse and not self.mouseover then
self.mouseover = true
return true
end
self.mouseover = hasMouse
end
function HotspotMenuWidget:overlay_trigger()
local hotkeys, bindings = getHotkeys()
return MenuScreen{
hotspot_frame=self.frame,
hotkeys=hotkeys,
bindings=bindings}:show()
end
-- register the menu hotspot with the overlay
OVERLAY_WIDGETS = {menu=HotspotMenuWidget}
-- ---------- --
-- MenuScreen --
-- ---------- --
local ARROW = string.char(26)
local MAX_LIST_WIDTH = 45
local MAX_LIST_HEIGHT = 15
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MenuScreen = defclass(MenuScreen, gui.Screen)
MenuScreen.ATTRS{
focus_path='hotkeys/menu',
hotspot_frame=DEFAULT_NIL,
hotkeys=DEFAULT_NIL,
bindings=DEFAULT_NIL,
}
-- get a map from the binding string to a list of hotkey strings that all
-- point to that binding
local function get_bindings_to_hotkeys(hotkeys, bindings)
local bindings_to_hotkeys = {}
for _,hotkey in ipairs(hotkeys) do
local binding = bindings[hotkey]
table.insert(ensure_key(bindings_to_hotkeys, binding), hotkey)
end
return bindings_to_hotkeys
end
-- number of non-text tiles: icon, space, space between cmd and hk, scrollbar
local LIST_BUFFER = 2 + 1 + 1
local function get_choices(hotkeys, bindings, is_inverted)
local choices, max_width, seen = {}, 0, {}
local bindings_to_hotkeys = get_bindings_to_hotkeys(hotkeys, bindings)
-- build list choices
for _,hotkey in ipairs(hotkeys) do
local command = bindings[hotkey]
if seen[command] then goto continue end
seen[command] = true
local hk_width, tokens = 0, {}
for _,hk in ipairs(bindings_to_hotkeys[command]) do
if hk_width ~= 0 then
table.insert(tokens, ', ')
hk_width = hk_width + 2
end
table.insert(tokens, {text=hk, pen=COLOR_LIGHTGREEN})
hk_width = hk_width + #hk
end
local command_str = command
if hk_width + #command + LIST_BUFFER > MAX_LIST_WIDTH then
local max_command_len = MAX_LIST_WIDTH - hk_width - LIST_BUFFER
command_str = command:sub(1, max_command_len - 3) .. '...'
end
table.insert(tokens, 1, {text=command_str})
local choice = {icon=ARROW, command=command, text=tokens,
hk_width=hk_width}
max_width = math.max(max_width, hk_width + #command_str + LIST_BUFFER)
table.insert(choices, is_inverted and 1 or #choices + 1, choice)
::continue::
end
-- adjust width of command fields so the hotkey tokens are right justified
for _,choice in ipairs(choices) do
local command_token = choice.text[1]
command_token.width = max_width - choice.hk_width - 3
end
return choices, max_width
end
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function MenuScreen:init()
self.mouseover = false
local choices,list_width = get_choices(self.hotkeys, self.bindings,
self.hotspot_frame.b)
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local list_frame = copyall(self.hotspot_frame)
list_frame.w = list_width + 2
list_frame.h = math.min(#choices, MAX_LIST_HEIGHT) + 2
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if list_frame.t then
list_frame.t = math.max(0, list_frame.t - 1)
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else
list_frame.b = math.max(0, list_frame.b - 1)
end
if list_frame.l then
list_frame.l = math.max(0, list_frame.l - 1)
else
list_frame.r = math.max(0, list_frame.r - 1)
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end
local help_frame = {w=list_frame.w, l=list_frame.l, r=list_frame.r}
if list_frame.t then
help_frame.t = list_frame.t + list_frame.h + 1
else
help_frame.b = list_frame.b + list_frame.h + 1
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end
self:addviews{
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widgets.ResizingPanel{
view_id='list_panel',
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autoarrange_subviews=true,
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frame=list_frame,
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frame_style=gui.GREY_LINE_FRAME,
frame_background=gui.CLEAR_PEN,
subviews={
widgets.List{
view_id='list',
choices=choices,
icon_width=2,
on_select=self:callback('onSelect'),
on_submit=self:callback('onSubmit'),
on_submit2=self:callback('onSubmit2'),
},
},
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},
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widgets.ResizingPanel{
view_id='help_panel',
autoarrange_subviews=true,
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frame=help_frame,
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frame_style=gui.GREY_LINE_FRAME,
frame_background=gui.CLEAR_PEN,
subviews={
widgets.WrappedLabel{
view_id='help',
text_to_wrap='',
scroll_keys={},
},
},
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},
}
end
function MenuScreen:onDismiss()
cleanupHotkeys()
end
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function MenuScreen:onSelect(_, choice)
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if not choice or #self.subviews == 0 then return end
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local first_word = choice.command:trim():split(' +')[1]
if first_word:startswith(':') then first_word = first_word:sub(2) end
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self.subviews.help.text_to_wrap = helpdb.is_entry(first_word) and
helpdb.get_entry_short_help(first_word) or 'Command not found'
self.subviews.help_panel:updateLayout()
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end
function MenuScreen:onSubmit(_, choice)
if not choice then return end
dfhack.screen.hideGuard(self, dfhack.run_command, choice.command)
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self:dismiss()
end
function MenuScreen:onSubmit2(_, choice)
if not choice then return end
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self:dismiss()
dfhack.run_script('gui/launcher', choice.command)
end
function MenuScreen:onInput(keys)
if keys.LEAVESCREEN then
self:dismiss()
return true
elseif keys.STANDARDSCROLL_RIGHT then
self:onSubmit2(self.subviews.list:getSelected())
return true
elseif keys._MOUSE_L_DOWN then
local list = self.subviews.list
local x = list:getMousePos()
if x == 0 then -- clicked on icon
self:onSubmit2(list:getSelected())
return true
end
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end
return self:inputToSubviews(keys)
end
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function MenuScreen:onRenderFrame(dc, rect)
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self:renderParent()
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end
function MenuScreen:onRenderBody(dc)
local panel = self.subviews.list_panel
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local list = self.subviews.list
local idx = list:getIdxUnderMouse()
if idx and idx ~= self.last_mouse_idx then
-- focus follows mouse, but if cursor keys were used to change the
-- selection, don't override the selection until the mouse moves to
-- another item
list:setSelected(idx)
self.mouseover = true
self.last_mouse_idx = idx
elseif not panel:getMousePos(gui.ViewRect{rect=panel.frame_rect})
and self.mouseover then
-- once the mouse has entered the list area, leaving the frame should
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-- close the menu screen
self:dismiss()
end
end
return _ENV