|
|
--[[--
|
|
|
Button widget that shows an "×" and handles closing window when tapped
|
|
|
|
|
|
Example:
|
|
|
|
|
|
local CloseButton = require("ui/widget/closebutton")
|
|
|
local parent_widget = OverlapGroup:new{}
|
|
|
table.insert(parent_widget, CloseButton:new{
|
|
|
window = parent_widget,
|
|
|
})
|
|
|
UIManager:show(parent_widget)
|
|
|
|
|
|
]]
|
|
|
|
|
|
local Font = require("ui/font")
|
|
|
local FrameContainer = require("ui/widget/container/framecontainer")
|
|
|
local GestureRange = require("ui/gesturerange")
|
|
|
local InputContainer = require("ui/widget/container/inputcontainer")
|
|
|
local TextWidget = require("ui/widget/textwidget")
|
|
|
local Screen = require("device").screen
|
|
|
|
|
|
local CloseButton = InputContainer:new{
|
|
|
overlap_align = "right",
|
|
|
window = nil,
|
|
|
padding_left = Screen:scaleBySize(14), -- for larger touch area
|
|
|
padding_right = 0,
|
|
|
padding_top = 0,
|
|
|
padding_bottom = 0,
|
|
|
}
|
|
|
|
|
|
function CloseButton:init()
|
|
|
local text_widget = TextWidget:new{
|
|
|
text = "×",
|
|
|
face = Font:getFace("cfont", 30),
|
|
|
}
|
|
|
|
|
|
local text_size = text_widget:getSize()
|
|
|
-- The text box height is greater than its width, and we want this × to
|
|
|
-- be diagonally aligned with our top right border
|
|
|
local text_width_pad = (text_size.h - text_size.w) / 2
|
|
|
-- We also add the provided padding_right
|
|
|
|
|
|
self[1] = FrameContainer:new{
|
|
|
bordersize = 0,
|
|
|
padding = 0,
|
|
|
padding_top = self.padding_top,
|
|
|
padding_bottom = self.padding_bottom,
|
|
|
padding_left = self.padding_left,
|
|
|
padding_right = self.padding_right + text_width_pad,
|
|
|
text_widget,
|
|
|
}
|
|
|
|
|
|
self.ges_events.Close = {
|
|
|
GestureRange:new{
|
|
|
ges = "tap",
|
|
|
-- x and y coordinates for the widget is only known after the it is
|
|
|
-- drawn. so use callback to get range at runtime.
|
|
|
range = function() return self.dimen end,
|
|
|
},
|
|
|
doc = "Tap on close button",
|
|
|
}
|
|
|
|
|
|
self.ges_events.HoldClose = {
|
|
|
GestureRange:new{
|
|
|
ges = "hold_release",
|
|
|
range = function() return self.dimen end,
|
|
|
},
|
|
|
doc = "Hold on close button",
|
|
|
}
|
|
|
end
|
|
|
|
|
|
function CloseButton:onClose()
|
|
|
if self.window.onClose then
|
|
|
self.window:onClose()
|
|
|
end
|
|
|
return true
|
|
|
end
|
|
|
|
|
|
function CloseButton:onHoldClose()
|
|
|
if self.window.onHoldClose then
|
|
|
self.window:onHoldClose()
|
|
|
end
|
|
|
return true
|
|
|
end
|
|
|
|
|
|
return CloseButton
|