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91 lines
3.5 KiB
Lua
91 lines
3.5 KiB
Lua
local BD = require("ui/bidi")
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local Device = require("device")
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local Geom = require("ui/geometry")
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local IconWidget = require("ui/widget/iconwidget")
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local InputContainer = require("ui/widget/container/inputcontainer")
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local RightContainer = require("ui/widget/container/rightcontainer")
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local Screen = Device.screen
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local ReaderDogear = InputContainer:new{}
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function ReaderDogear:init()
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-- This image could be scaled for DPI (with scale_for_dpi=true, scale_factor=0.7),
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-- but it's as good to scale it to a fraction (1/32) of the screen size.
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-- For CreDocument, we should additionally take care of not exceeding margins
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-- to not overwrite the book text.
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-- For other documents, there is no easy way to know if valuable content
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-- may be hidden by the icon (kopt's page_margin is quite obscure).
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self.dogear_max_size = math.ceil( math.min(Screen:getWidth(), Screen:getHeight()) / 32)
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self.dogear_size = nil
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self:setupDogear()
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self:resetLayout()
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end
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function ReaderDogear:setupDogear(new_dogear_size)
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if not new_dogear_size then
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new_dogear_size = self.dogear_max_size
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end
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if new_dogear_size ~= self.dogear_size then
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self.dogear_size = new_dogear_size
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if self[1] then
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self[1]:free()
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end
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self[1] = RightContainer:new{
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dimen = Geom:new{w = Screen:getWidth(), h = self.dogear_size},
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IconWidget:new{
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icon = "dogear.opaque",
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rotation_angle = BD.mirroredUILayout() and 90 or 0,
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width = self.dogear_size,
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height = self.dogear_size,
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}
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}
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end
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end
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function ReaderDogear:onReadSettings(config)
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if not self.ui.document.info.has_pages then
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-- Adjust to CreDocument margins (as done in ReaderTypeset)
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local h_margins = config:readSetting("copt_h_page_margins") or
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G_reader_settings:readSetting("copt_h_page_margins") or
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DCREREADER_CONFIG_H_MARGIN_SIZES_MEDIUM
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local t_margin = config:readSetting("copt_t_page_margin") or
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G_reader_settings:readSetting("copt_t_page_margin") or
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DCREREADER_CONFIG_T_MARGIN_SIZES_LARGE
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local b_margin = config:readSetting("copt_b_page_margin") or
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G_reader_settings:readSetting("copt_b_page_margin") or
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DCREREADER_CONFIG_B_MARGIN_SIZES_LARGE
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local margins = { h_margins[1], t_margin, h_margins[2], b_margin }
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self:onSetPageMargins(margins)
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end
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end
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function ReaderDogear:onSetPageMargins(margins)
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if self.ui.document.info.has_pages then
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-- we may get called by readerfooter (when hiding the footer)
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-- on pdf documents and get margins=nil
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return
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end
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local margin_top, margin_right = margins[2], margins[3]
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-- As the icon is squared, we can take the max() instead of the min() of
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-- top & right margins and be sure no text is hidden by the icon
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-- (the provided margins are not scaled, so do as ReaderTypeset)
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local margin = Screen:scaleBySize(math.max(margin_top, margin_right))
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local new_dogear_size = math.min(self.dogear_max_size, margin)
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self:setupDogear(new_dogear_size)
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end
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function ReaderDogear:resetLayout()
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local new_screen_width = Screen:getWidth()
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if new_screen_width == self._last_screen_width then return end
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self._last_screen_width = new_screen_width
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self[1].dimen.w = new_screen_width
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end
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function ReaderDogear:onSetDogearVisibility(visible)
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self.view.dogear_visible = visible
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return true
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end
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return ReaderDogear
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