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koreader/frontend/ui/widget/checkmark.lua
poire-z 7952fa2c09 [RTL UI] update widgets and apps for UI mirroring
Small tweaks all around to handle UI mirroring:
- swap existing symbols like arrows, or use alternative ones
- rotate some images, like chevrons and dogear icons
- flip some left and right swipe handling
- flip some geometry arithmetic like tap on left or right
  side of page or dict window
- use new ProgressWidget:getPercentageFromPosition() instead
  of geometry arithmetic
- BD.wrap() some concatenated string bits, like in reader
  and menu footers
- flip inverse_reading_order when UI is mirrored

More specific tweaks:
- ReaderGesture: reset some specific gestures when UI direction
  has changed (tap on top/bottom left/right corners, for
  bookmarks and FileManager "Plus menu").
- ReaderRolling: show markers on the correct side of page,
  in single or dual page mode.
- KoptOptions: swap left and right icons in Alignment toggle
- CheckMark: proper rendering in all 4 mirroring/rtl combinations.
- VirtualKeyboard: forbid any mirroring
- Move util.getMenuText into Menu.lua
2019-12-08 15:10:51 +01:00

87 lines
2.7 KiB
Lua

--[[--
Widget that shows a checkmark (`✓`), an empty box (`□`)
or nothing of the same size.
Example:
local CheckMark = require("ui/widget/CheckMark")
local parent_widget = FrameContainer:new{}
table.insert(parent_widget, CheckMark:new{
checkable = false, -- shows nothing when false, defaults to true
checked = function() end, -- whether the box has a checkmark in it
})
UIManager:show(parent_widget)
]]
local BD = require("ui/bidi")
local Blitbuffer = require("ffi/blitbuffer")
local Font = require("ui/font")
local InputContainer = require("ui/widget/container/inputcontainer")
local OverlapGroup = require("ui/widget/overlapgroup")
local TextWidget = require("ui/widget/textwidget")
local CheckMark = InputContainer:new{
checkable = true,
checked = false,
enabled = true,
face = Font:getFace("smallinfofont"),
width = 0,
height = 0,
_mirroredUI = BD.mirroredUILayout(),
}
function CheckMark:init()
-- Adjust these checkmarks if mirroring UI (para_direction_rtl should
-- follow BD.mirroredUILayout(), and not the set or reverted text
-- direction, for proper rendering on the right).
local para_direction_rtl = self._mirroredUI
local checked_widget = TextWidget:new{
text = " ✓", -- preceded by thin space for better alignment
face = self.face,
para_direction_rtl = para_direction_rtl,
}
local unchecked_widget = TextWidget:new{
text = "",
face = self.face,
para_direction_rtl = para_direction_rtl,
}
local disabled_checked_widget = TextWidget:new{
text = " ✓", -- preceded by thin space for better alignment
face = self.face,
fgcolor = Blitbuffer.COLOR_DARK_GRAY,
para_direction_rtl = para_direction_rtl,
}
local disabled_unchecked_widget = TextWidget:new{
text = "",
face = self.face,
fgcolor = Blitbuffer.COLOR_DARK_GRAY,
para_direction_rtl = para_direction_rtl,
}
local empty_widget = TextWidget:new{
text = "",
face = self.face,
para_direction_rtl = para_direction_rtl,
}
local widget
if self.checkable then
if self.enabled then
widget = OverlapGroup:new{
(self.checked and checked_widget or empty_widget),
unchecked_widget
}
else
widget = OverlapGroup:new{
(self.checked and disabled_checked_widget or empty_widget),
disabled_unchecked_widget
}
end
else
widget = empty_widget
end
self[1] = widget
self.dimen = unchecked_widget:getSize()
end
return CheckMark