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koreader/frontend/apps/reader/modules/readerdogear.lua
poire-z 7666644362
Bookmarks, CoverBrowser: scale dogear icon (#4081)
The Dogear icon is 20x20 pixels and was never scaled where used. Now:
- The bookmark icon (top right of screen) is scaled to 1/32th of the screen
width (previously, it was 1/30th on a 600px wide emulator, 1/53th on a GloHD).
On CreDocument, furthermore decrease its size if needed depending on the
selected margins so it never overwrite the text.
- CoverBrowser list view: scale it to the available room under
the "N % of P page" text, so it does not cover "page".
- CoverBrowser mosaic view: scale it to 1/16th of the cover rectangle, which
should prevent if from overwritting the text thanks to a max text width of
7/8 of the cover rectangle.

Also for CoverBrowser: don't index metadata for unsupported document
(which could happen when browsing files with PathChooser) and show
full filename for such documents.
Also: ImageWidget: small fix in case we use both scale_factor and
scale_for_dpi.
2018-07-19 08:18:55 +02:00

106 lines
3.7 KiB
Lua

local Device = require("device")
local Event = require("ui/event")
local Geom = require("ui/geometry")
local GestureRange = require("ui/gesturerange")
local ImageWidget = require("ui/widget/imagewidget")
local InputContainer = require("ui/widget/container/inputcontainer")
local RightContainer = require("ui/widget/container/rightcontainer")
local Screen = require("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",
alpha = true,
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)
self:onSetPageMargins(
config:readSetting("copt_page_margins") or
G_reader_settings:readSetting("copt_page_margins") or
DCREREADER_CONFIG_MARGIN_SIZES_MEDIUM)
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
local new_screen_height = Screen:getHeight()
self._last_screen_width = new_screen_width
self[1].dimen.w = new_screen_width
if Device:isTouchDevice() then
self.ges_events = {
Tap = {
GestureRange:new{
ges = "tap",
range = Geom:new{
x = new_screen_width*DTAP_ZONE_BOOKMARK.x,
y = new_screen_height*DTAP_ZONE_BOOKMARK.y,
w = new_screen_width*DTAP_ZONE_BOOKMARK.w,
h = new_screen_height*DTAP_ZONE_BOOKMARK.h
}
}
}
}
end
end
function ReaderDogear:onTap()
self.ui:handleEvent(Event:new("ToggleBookmark"))
return true
end
function ReaderDogear:onSetDogearVisibility(visible)
self.view.dogear_visible = visible
return true
end
return ReaderDogear