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mirror of https://github.com/koreader/koreader synced 2024-11-10 01:10:34 +00:00
koreader/frontend/ui/widget/verticalgroup.lua
NiLuJe df0bbc9db7
Tame some ButtonTable users into re-using Buttontable instances if possible (#7166)
* QuickDictLookup, ImageViewer, NumberPicker: Smarter `update` that will re-use most of the widget's layout instead of re-instantiating all the things.
* SpinWidget/DoubleSpinWidget: The NumberPicker change above renders a hack to preserve alpha on these widgets almost unnecessary. Also fixed said hack to also apply to the center, value button.

* Button: Don't re-instantiate the frame in setText/setIcon when unnecessary (e.g., no change at all, or no layout change).
* Button: Add a refresh method that repaints and refreshes a *specific* Button (provided it's been painted once) all on its lonesome.

* ConfigDialog: Free everything that's going to be re-instatiated on update
 
* A few more post #7118 fixes:
  * SkimTo: Always flag the chapter nav buttons as vsync
  * Button: Fix the highlight on rounded buttons when vsync is enabled (e.g., it's now entirely visible, instead of showing a weird inverted corner glitch).
  * Some more heuristic tweaks in Menu/TouchMenu/Button/IconButton
* ButtonTable: fix the annoying rounding issue I'd noticed in #7054 ;).

* Enable dithering in TextBoxWidget (e.g., in the Wikipedia full view). This involved moving the HW dithering align fixup to base, where it always ought to have been ;).

* Switch a few widgets that were using "partial" on close to "ui", or, more rarely, "flashui". The intent being to limit "partial" purely to the Reader, because it has a latency cost when mixed with other refreshes, which happens often enough in UI ;).

* Minor documentation tweaks around UIManager's `setDirty` to reflect that change.

* ReaderFooter: Force a footer repaint on resume if it is visible (otherwise, just update it).
* ReaderBookmark: In the same vein, don't repaint an invisible footer on bookmark count changes.
2021-01-29 00:20:15 +01:00

79 lines
2.0 KiB
Lua

--[[--
A layout widget that puts objects under each other.
--]]
local BD = require("ui/bidi")
local WidgetContainer = require("ui/widget/container/widgetcontainer")
local VerticalGroup = WidgetContainer:new{
align = "center",
allow_mirroring = true,
_mirroredUI = BD.mirroredUILayout(),
_size = nil,
_offsets = {},
}
function VerticalGroup:getSize()
if not self._size then
self._size = { w = 0, h = 0 }
self._offsets = { }
for i, widget in ipairs(self) do
local w_size = widget:getSize()
self._offsets[i] = {
x = w_size.w,
y = self._size.h,
}
self._size.h = self._size.h + w_size.h
if w_size.w > self._size.w then
self._size.w = w_size.w
end
end
end
return self._size
end
function VerticalGroup:paintTo(bb, x, y)
local size = self:getSize()
local align = self.align
if self._mirroredUI and self.allow_mirroring then
if align == "left" then
align = "right"
elseif align == "right" then
align = "left"
end
end
for i, widget in ipairs(self) do
if align == "center" then
widget:paintTo(bb,
x + math.floor((size.w - self._offsets[i].x) / 2),
y + self._offsets[i].y)
elseif align == "left" then
widget:paintTo(bb, x, y + self._offsets[i].y)
elseif align == "right" then
widget:paintTo(bb,
x + size.w - self._offsets[i].x,
y + self._offsets[i].y)
end
end
end
function VerticalGroup:clear()
self:free()
-- Skip WidgetContainer:clear's free call, we just did that in our own free ;)
WidgetContainer.clear(self, true)
end
function VerticalGroup:resetLayout()
self._size = nil
self._offsets = {}
end
function VerticalGroup:free()
--print("VerticalGroup:free on", self)
self:resetLayout()
WidgetContainer.free(self)
end
return VerticalGroup