dfhack/library/lua/gui.lua

355 lines
9.5 KiB
Lua

-- Viewscreen implementation utility collection.
local _ENV = mkmodule('gui')
local dscreen = dfhack.screen
CLEAR_PEN = {ch=32,fg=0,bg=0}
function simulateInput(screen,...)
local keys = {}
local function push_key(arg)
local kv = arg
if type(arg) == 'string' then
kv = df.interface_key[arg]
if kv == nil then
error('Invalid keycode: '..arg)
end
end
if type(arg) == 'number' then
keys[#keys+1] = kv
end
end
for i = 1,select('#',...) do
local arg = select(i,...)
if arg ~= nil then
local t = type(arg)
if type(arg) == 'table' then
for k,v in pairs(arg) do
if v == true then
push_key(k)
else
push_key(v)
end
end
else
push_key(arg)
end
end
end
dscreen._doSimulateInput(screen, keys)
end
function mkdims_xy(x1,y1,x2,y2)
return { x1=x1, y1=y1, x2=x2, y2=y2, width=x2-x1+1, height=y2-y1+1 }
end
function mkdims_wh(x1,y1,w,h)
return { x1=x1, y1=y1, x2=x1+w-1, y2=y1+h-1, width=w, height=h }
end
function inset(rect,dx1,dy1,dx2,dy2)
return mkdims_xy(
rect.x1+dx1, rect.y1+dy1,
rect.x2-(dx2 or dx1), rect.y2-(dy2 or dy1)
)
end
local function to_pen(default, pen, bg, bold)
if pen == nil then
return default or {}
elseif type(pen) ~= 'table' then
return {fg=pen,bg=bg,bold=bold}
else
return pen
end
end
----------------------------
-- Clipped painter object --
----------------------------
Painter = defclass(Painter, nil)
function Painter.new(rect, pen)
rect = rect or mkdims_wh(0,0,dscreen.getWindowSize())
local self = {
x1 = rect.x1, clip_x1 = rect.x1,
y1 = rect.y1, clip_y1 = rect.y1,
x2 = rect.x2, clip_x2 = rect.x2,
y2 = rect.y2, clip_y2 = rect.y2,
width = rect.x2-rect.x1+1,
height = rect.y2-rect.y1+1,
cur_pen = to_pen(nil, pen or COLOR_GREY)
}
return mkinstance(Painter, self):seek(0,0)
end
function Painter:isValidPos()
return self.x >= self.clip_x1 and self.x <= self.clip_x2
and self.y >= self.clip_y1 and self.y <= self.clip_y2
end
function Painter:viewport(x,y,w,h)
local x1,y1 = self.x1+x, self.y1+y
local x2,y2 = x1+w-1, y1+h-1
local vp = {
-- Logical viewport
x1 = x1, y1 = y1, x2 = x2, y2 = y2,
width = w, height = h,
-- Actual clipping rect
clip_x1 = math.max(self.clip_x1, x1),
clip_y1 = math.max(self.clip_y1, y1),
clip_x2 = math.min(self.clip_x2, x2),
clip_y2 = math.min(self.clip_y2, y2),
-- Pen
cur_pen = self.cur_pen
}
return mkinstance(Painter, vp):seek(0,0)
end
function Painter:localX()
return self.x - self.x1
end
function Painter:localY()
return self.y - self.y1
end
function Painter:seek(x,y)
if x then self.x = self.x1 + x end
if y then self.y = self.y1 + y end
return self
end
function Painter:advance(dx,dy)
if dx then self.x = self.x + dx end
if dy then self.y = self.y + dy end
return self
end
function Painter:newline(dx)
self.y = self.y + 1
self.x = self.x1 + (dx or 0)
return self
end
function Painter:pen(pen,...)
self.cur_pen = to_pen(self.cur_pen, pen, ...)
return self
end
function Painter:color(fg,bold,bg)
self.cur_pen = copyall(self.cur_pen)
self.cur_pen.fg = fg
self.cur_pen.bold = bold
if bg then self.cur_pen.bg = bg end
return self
end
function Painter:clear()
dscreen.fillRect(CLEAR_PEN, self.clip_x1, self.clip_y1, self.clip_x2, self.clip_y2)
return self
end
function Painter:fill(x1,y1,x2,y2,pen,bg,bold)
if type(x1) == 'table' then
x1, y1, x2, y2, pen, bg, bold = x1.x1, x1.y1, x1.x2, x1.y2, y1, x2, y2
end
x1 = math.max(x1,self.clip_x1)
y1 = math.max(y1,self.clip_y1)
x2 = math.min(x2,self.clip_x2)
y2 = math.min(y2,self.clip_y2)
dscreen.fillRect(to_pen(self.cur_pen,pen,bg,bold),x1,y1,x2,y2)
return self
end
function Painter:char(char,pen,...)
if self:isValidPos() then
dscreen.paintTile(to_pen(self.cur_pen, pen, ...), self.x, self.y, char)
end
return self:advance(1, nil)
end
function Painter:tile(char,tile,pen,...)
if self:isValidPos() then
dscreen.paintTile(to_pen(self.cur_pen, pen, ...), self.x, self.y, char, tile)
end
return self:advance(1, nil)
end
function Painter:string(text,pen,...)
if self.y >= self.clip_y1 and self.y <= self.clip_y2 then
local dx = 0
if self.x < self.clip_x1 then
dx = self.clip_x1 - self.x
end
local len = #text
if self.x + len - 1 > self.clip_x2 then
len = self.clip_x2 - self.x + 1
end
if len > dx then
dscreen.paintString(
to_pen(self.cur_pen, pen, ...),
self.x+dx, self.y,
string.sub(text,dx+1,len)
)
end
end
return self:advance(#text, nil)
end
------------------------
-- Base screen object --
------------------------
Screen = defclass(Screen, dfhack.screen)
Screen.text_input_mode = false
function Screen:isShown()
return self._native ~= nil
end
function Screen:isActive()
return self:isShown() and not self:isDismissed()
end
function Screen:renderParent()
if self._native and self._native.parent then
self._native.parent:render()
else
dscreen.clear()
end
end
function Screen:sendInputToParent(...)
if self._native and self._native.parent then
simulateInput(self._native.parent, ...)
end
end
function Screen:show(below)
if self._native then
error("This screen is already on display")
end
self:onAboutToShow(below)
if dscreen.show(self, below) then
self:onShown()
else
error('Could not show screen')
end
end
function Screen:onAboutToShow()
end
function Screen:onShown()
end
function Screen:dismiss()
if self._native and not dscreen.isDismissed(self) then
dscreen.dismiss(self)
self:onDismissed()
end
end
function Screen:onDismissed()
end
------------------------
-- Framed screen object --
------------------------
-- Plain grey-colored frame.
GREY_FRAME = {
frame_pen = { ch = ' ', fg = COLOR_BLACK, bg = COLOR_GREY },
title_pen = { fg = COLOR_BLACK, bg = COLOR_WHITE },
signature_pen = { fg = COLOR_BLACK, bg = COLOR_GREY },
}
-- The usual boundary used by the DF screens. Often has fancy pattern in tilesets.
BOUNDARY_FRAME = {
frame_pen = { ch = 0xDB, fg = COLOR_DARKGREY, bg = COLOR_BLACK },
title_pen = { fg = COLOR_BLACK, bg = COLOR_GREY },
signature_pen = { fg = COLOR_BLACK, bg = COLOR_DARKGREY },
}
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GREY_LINE_FRAME = {
frame_pen = { ch = 206, fg = COLOR_GREY, bg = COLOR_BLACK },
h_frame_pen = { ch = 205, fg = COLOR_GREY, bg = COLOR_BLACK },
v_frame_pen = { ch = 186, fg = COLOR_GREY, bg = COLOR_BLACK },
lt_frame_pen = { ch = 201, fg = COLOR_GREY, bg = COLOR_BLACK },
lb_frame_pen = { ch = 200, fg = COLOR_GREY, bg = COLOR_BLACK },
rt_frame_pen = { ch = 187, fg = COLOR_GREY, bg = COLOR_BLACK },
rb_frame_pen = { ch = 188, fg = COLOR_GREY, bg = COLOR_BLACK },
title_pen = { fg = COLOR_BLACK, bg = COLOR_GREY },
signature_pen = { fg = COLOR_DARKGREY, bg = COLOR_BLACK },
}
function paint_frame(x1,y1,x2,y2,style,title)
local pen = style.frame_pen
dscreen.paintTile(style.lt_frame_pen or pen, x1, y1)
dscreen.paintTile(style.rt_frame_pen or pen, x2, y1)
dscreen.paintTile(style.lb_frame_pen or pen, x1, y2)
dscreen.paintTile(style.rb_frame_pen or pen, x2, y2)
dscreen.fillRect(style.t_frame_pen or style.h_frame_pen or pen,x1+1,y1,x2-1,y1)
dscreen.fillRect(style.b_frame_pen or style.h_frame_pen or pen,x1+1,y2,x2-1,y2)
dscreen.fillRect(style.l_frame_pen or style.v_frame_pen or pen,x1,y1+1,x1,y2-1)
dscreen.fillRect(style.r_frame_pen or style.v_frame_pen or pen,x2,y1+1,x2,y2-1)
dscreen.paintString(style.signature_pen or style.title_pen or pen,x2-7,y2,"DFHack")
if title then
local x = math.max(0,math.floor((x2-x1-3-#title)/2)) + x1
local tstr = ' '..title..' '
if #tstr > x2-x1-1 then
tstr = string.sub(tstr,1,x2-x1-1)
end
dscreen.paintString(style.title_pen or pen, x, y1, tstr)
end
end
FramedScreen = defclass(FramedScreen, Screen)
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FramedScreen.frame_style = BOUNDARY_FRAME
local function hint_coord(gap,hint)
if hint and hint > 0 then
return math.min(hint,gap)
elseif hint and hint < 0 then
return math.max(0,gap-hint)
else
return math.floor(gap/2)
end
end
function FramedScreen:updateFrameSize(sw,sh)
local iw, ih = sw-2, sh-2
local width = math.min(self.frame_width or iw, iw)
local height = math.min(self.frame_height or ih, ih)
local gw, gh = iw-width, ih-height
local x1, y1 = hint_coord(gw,self.frame_xhint), hint_coord(gh,self.frame_yhint)
self.frame_rect = mkdims_wh(x1+1,y1+1,width,height)
self.frame_opaque = (gw == 0 and gh == 0)
end
function FramedScreen:onResize(w,h)
self:updateFrameSize(w,h)
end
function FramedScreen:onRender()
local rect = self.frame_rect
local x1,y1,x2,y2 = rect.x1-1, rect.y1-1, rect.x2+1, rect.y2+1
if self.frame_opaque then
dscreen.clear()
else
self:renderParent()
dscreen.fillRect(CLEAR_PEN,x1,y1,x2,y2)
end
paint_frame(x1,y1,x2,y2,self.frame_style,self.frame_title)
self:onRenderBody(Painter.new(rect))
end
return _ENV