forked from koreader/koreader
-
Notifications
You must be signed in to change notification settings - Fork 0
/
readerdogear.lua
88 lines (79 loc) · 3.41 KB
/
readerdogear.lua
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
local Device = require("device")
local Geom = require("ui/geometry")
local ImageWidget = require("ui/widget/imagewidget")
local InputContainer = require("ui/widget/container/inputcontainer")
local RightContainer = require("ui/widget/container/rightcontainer")
local Screen = Device.screen
local ReaderDogear = InputContainer:new{}
function ReaderDogear:init()
-- This image could be scaled for DPI (with scale_for_dpi=true, scale_factor=0.7),
-- but it's as good to scale it to a fraction (1/32) of the screen size.
-- For CreDocument, we should additionally take care of not exceeding margins
-- to not overwrite the book text.
-- For other documents, there is no easy way to know if valuable content
-- may be hidden by the icon (kopt's page_margin is quite obscure).
self.dogear_max_size = math.ceil( math.min(Screen:getWidth(), Screen:getHeight()) / 32)
self.dogear_size = nil
self:setupDogear()
self:resetLayout()
end
function ReaderDogear:setupDogear(new_dogear_size)
if not new_dogear_size then
new_dogear_size = self.dogear_max_size
end
if new_dogear_size ~= self.dogear_size then
self.dogear_size = new_dogear_size
if self[1] then
self[1]:free()
end
self[1] = RightContainer:new{
dimen = Geom:new{w = Screen:getWidth(), h = self.dogear_size},
ImageWidget:new{
file = "resources/icons/dogear.png",
width = self.dogear_size,
height = self.dogear_size,
}
}
end
end
function ReaderDogear:onReadSettings(config)
if not self.ui.document.info.has_pages then
-- Adjust to CreDocument margins (as done in ReaderTypeset)
local h_margins = config:readSetting("copt_h_page_margins") or
G_reader_settings:readSetting("copt_h_page_margins") or
DCREREADER_CONFIG_H_MARGIN_SIZES_MEDIUM
local t_margin = config:readSetting("copt_t_page_margin") or
G_reader_settings:readSetting("copt_t_page_margin") or
DCREREADER_CONFIG_T_MARGIN_SIZES_LARGE
local b_margin = config:readSetting("copt_b_page_margin") or
G_reader_settings:readSetting("copt_b_page_margin") or
DCREREADER_CONFIG_B_MARGIN_SIZES_LARGE
local margins = { h_margins[1], t_margin, h_margins[2], b_margin }
self:onSetPageMargins(margins)
end
end
function ReaderDogear:onSetPageMargins(margins)
if self.ui.document.info.has_pages then
-- we may get called by readerfooter (when hiding the footer)
-- on pdf documents and get margins=nil
return
end
local margin_top, margin_right = margins[2], margins[3]
-- As the icon is squared, we can take the max() instead of the min() of
-- top & right margins and be sure no text is hidden by the icon
-- (the provided margins are not scaled, so do as ReaderTypeset)
local margin = Screen:scaleBySize(math.max(margin_top, margin_right))
local new_dogear_size = math.min(self.dogear_max_size, margin)
self:setupDogear(new_dogear_size)
end
function ReaderDogear:resetLayout()
local new_screen_width = Screen:getWidth()
if new_screen_width == self._last_screen_width then return end
self._last_screen_width = new_screen_width
self[1].dimen.w = new_screen_width
end
function ReaderDogear:onSetDogearVisibility(visible)
self.view.dogear_visible = visible
return true
end
return ReaderDogear