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mirror of https://github.com/koreader/koreader synced 2024-11-10 01:10:34 +00:00
koreader/frontend/ui/widget/horizontalgroup.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

84 lines
2.3 KiB
Lua

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