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koreader/plugins/coverbrowser.koplugin/covermenu.lua
poire-z e6612eefe1 CoverBrowser: fix no content with Pathchooser in RTL UI
Really needed these :resetLayout() (as done in Menu.lua)
when stuff is right aligned (otherwise, first computation
of x-offset, when there was no content, being Screen.width,
would stick, and would draw the content off-screen on the
right - no issue noticed when left-aligned as the offsets
would stay being 0 whether there is content or none).
2020-02-27 23:59:02 +01:00

714 lines
32 KiB
Lua

local BD = require("ui/bidi")
local DocumentRegistry = require("document/documentregistry")
local DocSettings = require("docsettings")
local FileManagerBookInfo = require("apps/filemanager/filemanagerbookinfo")
local ImageViewer = require("ui/widget/imageviewer")
local InfoMessage = require("ui/widget/infomessage")
local Menu = require("ui/widget/menu")
local TextViewer = require("ui/widget/textviewer")
local UIManager = require("ui/uimanager")
local logger = require("logger")
local _ = require("gettext")
local BookInfoManager = require("bookinfomanager")
-- This is a kind of "base class" for both MosaicMenu and ListMenu.
-- It implements the common code shared by these, mostly the non-UI
-- work : the updating of items and the management of backgrouns jobs.
--
-- Here are defined the common overriden methods of Menu:
-- :updateItems(select_number)
-- :onCloseWidget()
--
-- MosaicMenu or ListMenu should implement specific UI methods:
-- :_recalculateDimen()
-- :_updateItemsBuildUI()
-- This last method is called in the middle of :updateItems() , and
-- should fill self.item_group with some specific UI layout. It may add
-- not found item to self.items_to_update for us to update() them
-- regularly.
-- Store these as local, to be set by some object and re-used by
-- another object (as we plug the methods below to different objects,
-- we can't store them in 'self' if we want another one to use it)
local current_path = nil
local current_cover_specs = false
-- Simple holder of methods that will replace those
-- in the real Menu class or instance
local CoverMenu = {}
function CoverMenu:updateItems(select_number)
-- As done in Menu:updateItems()
local old_dimen = self.dimen and self.dimen:copy()
-- self.layout must be updated for focusmanager
self.layout = {}
self.item_group:free() -- avoid memory leaks by calling free() on all our sub-widgets
self.item_group:clear()
-- strange, best here if resetLayout() are done after _recalculateDimen(),
-- unlike what is done in menu.lua
self:_recalculateDimen()
self.page_info:resetLayout()
self.return_button:resetLayout()
self.vertical_span:clear()
self.content_group:resetLayout()
-- default to select the first item
if not select_number then
select_number = 1
end
-- Reset the list of items not found in db that will need to
-- be updated by a scheduled action
self.items_to_update = {}
-- Cancel any previous (now obsolete) scheduled update
if self.items_update_action then
UIManager:unschedule(self.items_update_action)
self.items_update_action = nil
end
-- Force garbage collecting before drawing a new page.
-- It's not really needed from a memory usage point of view, we did
-- all the free() where necessary, and koreader memory usage seems
-- stable when file browsing only (15-25 MB).
-- But I witnessed some freezes after browsing a lot when koreader's main
-- process was using 100% cpu (and some slow downs while drawing soon before
-- the freeze, like the full refresh happening before the final drawing of
-- new text covers), while still having a small memory usage (20/30 Mb)
-- that I suspect may be some garbage collecting happening at one point
-- and getting stuck...
-- With this, garbage collecting may be more deterministic, and it has
-- no negative impact on user experience.
collectgarbage()
collectgarbage()
-- Specific UI building implementation (defined in some other module)
self._has_cover_images = false
self:_updateItemsBuildUI()
-- Set the local variables with the things we know
-- These are used only by extractBooksInDirectory(), which should
-- use the cover_specs set for FileBrowser, and not those from History.
-- Hopefully, we get self.path=nil when called fro History
if self.path then
current_path = self.path
current_cover_specs = self.cover_specs
end
-- As done in Menu:updateItems()
self:updatePageInfo(select_number)
if self.show_path then
self.path_text:setText(BD.directory(self.path))
end
self.show_parent.dithered = self._has_cover_images
UIManager:setDirty(self.show_parent, function()
local refresh_dimen =
old_dimen and old_dimen:combine(self.dimen)
or self.dimen
return "ui", refresh_dimen, self.show_parent.dithered
end)
-- As additionally done in FileChooser:updateItems()
if self.path_items then
self.path_items[self.path] = (self.page - 1) * self.perpage + (select_number or 1)
end
-- Deal with items not found in db
if #self.items_to_update > 0 then
-- Prepare for background info extraction job
local files_to_index = {} -- table of {filepath, cover_specs}
for i=1, #self.items_to_update do
table.insert(files_to_index, {
filepath = self.items_to_update[i].filepath,
cover_specs = self.items_to_update[i].cover_specs
})
end
-- Launch it at nextTick, so UIManager can render us smoothly
UIManager:nextTick(function()
local launched = BookInfoManager:extractInBackground(files_to_index)
if not launched then -- fork failed (never experienced that, but let's deal with it)
-- Cancel scheduled update, as it won't get any result
if self.items_update_action then
UIManager:unschedule(self.items_update_action)
self.items_update_action = nil
end
UIManager:show(InfoMessage:new{
text = _("Start-up of background extraction job failed.\nPlease restart KOReader or your device.")
})
end
end)
-- Scheduled update action
self.items_update_action = function()
logger.dbg("Scheduled items update:", #self.items_to_update, "waiting")
local is_still_extracting = BookInfoManager:isExtractingInBackground()
local i = 1
while i <= #self.items_to_update do -- process and clean in-place
local item = self.items_to_update[i]
item:update()
if item.bookinfo_found then
logger.dbg(" found", item.text)
self.show_parent.dithered = item._has_cover_image
local refreshfunc = function()
if item.refresh_dimen then
-- MosaicMenuItem may exceed its own dimen in its paintTo
-- with its "description" hint
return "ui", item.refresh_dimen, self.show_parent.dithered
else
return "ui", item[1].dimen, self.show_parent.dithered
end
end
UIManager:setDirty(self.show_parent, refreshfunc)
table.remove(self.items_to_update, i)
else
logger.dbg(" not yet found", item.text)
i = i + 1
end
end
if #self.items_to_update > 0 then -- re-schedule myself
if is_still_extracting then -- we have still chances to get new stuff
logger.dbg("re-scheduling items update:", #self.items_to_update, "still waiting")
UIManager:scheduleIn(1, self.items_update_action)
else
logger.dbg("Not all items found, but background extraction has stopped, not re-scheduling")
end
else
logger.dbg("items update completed")
end
end
UIManager:scheduleIn(1, self.items_update_action)
end
-- (We may not need to do the following if we extend onFileHold
-- code in filemanager.lua to check for existence and call a
-- method: self:getAdditionalButtons() to add our buttons
-- to its own set.)
-- We want to add some buttons to the onFileHold popup. This function
-- is dynamically created by FileManager:init(), and we don't want
-- to override this... So, here, when we see the onFileHold function,
-- we replace it by ours.
-- (FileManager may replace file_chooser.onFileHold after we've been called once, so we need
-- to replace it again if it is not ours)
if not self.onFileHold_ours -- never replaced
or self.onFileHold ~= self.onFileHold_ours then -- it is no more ours
-- We need to do it at nextTick, once FileManager has instantiated
-- its FileChooser completely
UIManager:nextTick(function()
-- Store original function, so we can call it
self.onFileHold_orig = self.onFileHold
-- Replace it with ours
-- This causes luacheck warning: "shadowing upvalue argument 'self' on line 34".
-- Ignoring it (as done in filemanager.lua for the same onFileHold)
self.onFileHold = function(self, file) -- luacheck: ignore
-- Call original function: it will create a ButtonDialogTitle
-- and store it as self.file_dialog, and UIManager:show() it.
self.onFileHold_orig(self, file)
local bookinfo = BookInfoManager:getBookInfo(file)
if not bookinfo or bookinfo._is_directory then
-- If no bookinfo (yet) about this file, or it's a directory, let the original dialog be
return true
end
-- Remember some of this original ButtonDialogTitle properties
local orig_title = self.file_dialog.title
local orig_title_align = self.file_dialog.title_align
local orig_buttons = self.file_dialog.buttons
-- Close original ButtonDialogTitle (it has not yet been painted
-- on screen, so we won't see it)
UIManager:close(self.file_dialog)
-- And clear the rendering stack to avoid inheriting its dirty/refresh queue
UIManager:clearRenderStack()
-- Replace Book information callback to use directly our bookinfo
orig_buttons[4][2].callback = function()
FileManagerBookInfo:show(file, bookinfo)
UIManager:close(self.file_dialog)
end
-- Fudge the "Purge .sdr" button ([1][3]) callback to also trash the cover_info_cache
local orig_purge_callback = orig_buttons[1][3].callback
orig_buttons[1][3].callback = function()
-- Wipe the cache
if self.cover_info_cache and self.cover_info_cache[file] then
self.cover_info_cache[file] = nil
end
-- And then purge the sidecar folder as expected
orig_purge_callback()
end
-- Add some new buttons to original buttons set
table.insert(orig_buttons[5], 1,
{ -- Mark the book as read/unread
text_func = function()
-- If the book has a cache entry, it means it has a sidecar file, and it *may* have the info we need.
local status
if self.cover_info_cache and self.cover_info_cache[file] then
local _, _, c_status = unpack(self.cover_info_cache[file])
status = c_status
end
-- NOTE: status may still be nil if the BookStatus widget was never opened in this book.
-- For our purposes, we assume this means reading or on hold, which is just fine.
-- NOTE: This also means we assume "on hold" means reading, meaning it'll be flipped to "finished",
-- which I'm personally okay with, too.
-- c.f., BookStatusWidget:generateSwitchGroup for the three possible constant values.
return status == "complete" and _("Mark as reading") or _("Mark as read")
end,
enabled = true,
callback = function()
local status
if self.cover_info_cache and self.cover_info_cache[file] then
local c_pages, c_percent_finished, c_status = unpack(self.cover_info_cache[file])
status = c_status == "complete" and "reading" or "complete"
-- Update the cache, even if it had a nil status before
self.cover_info_cache[file] = {c_pages, c_percent_finished, status}
else
-- We assumed earlier an empty status meant "reading", so, flip that to "complete"
status = "complete"
end
-- In case the book doesn't have a sidecar file, this'll create it
local docinfo = DocSettings:open(file)
if docinfo.data.summary and docinfo.data.summary.status then
-- Book already had the full BookStatus table in its sidecar, easy peasy!
docinfo.data.summary.status = status
else
-- No BookStatus table, create a minimal one...
if docinfo.data.summary then
-- Err, a summary table with no status entry? Should never happen...
local summary = { status = status }
-- Append the status entry to the existing summary...
require("util").tableMerge(docinfo.data.summary, summary)
else
-- No summary table at all, create a minimal one
local summary = { status = status }
docinfo:saveSetting("summary", summary)
end
end
docinfo:flush()
UIManager:close(self.file_dialog)
self:updateItems()
end,
}
)
-- Keep on adding new buttons
table.insert(orig_buttons, {
{ -- Allow user to view real size cover in ImageViewer
text = _("View full size cover"),
enabled = bookinfo.has_cover and true or false,
callback = function()
local document = DocumentRegistry:openDocument(file)
if document then
if document.loadDocument then -- needed for crengine
document:loadDocument(false) -- load only metadata
end
local cover_bb = document:getCoverPageImage()
if cover_bb then
local imgviewer = ImageViewer:new{
image = cover_bb,
with_title_bar = false,
fullscreen = true,
}
UIManager:show(imgviewer)
else
UIManager:show(InfoMessage:new{
text = _("No cover image available."),
})
end
UIManager:close(self.file_dialog)
DocumentRegistry:closeDocument(file)
end
end,
},
{ -- Allow user to directly view description in TextViewer
text = bookinfo.description and _("View book description") or _("No book description"),
enabled = bookinfo.description and true or false,
callback = function()
local description = require("util").htmlToPlainTextIfHtml(bookinfo.description)
local textviewer = TextViewer:new{
title = bookinfo.title,
text = description,
}
UIManager:close(self.file_dialog)
UIManager:show(textviewer)
end,
},
})
table.insert(orig_buttons, {
{ -- Allow user to ignore some offending cover image
text = bookinfo.ignore_cover and _("Unignore cover") or _("Ignore cover"),
enabled = bookinfo.has_cover and true or false,
callback = function()
BookInfoManager:setBookInfoProperties(file, {
["ignore_cover"] = not bookinfo.ignore_cover and 'Y' or false,
})
UIManager:close(self.file_dialog)
self:updateItems()
end,
},
{ -- Allow user to ignore some bad metadata (filename will be used instead)
text = bookinfo.ignore_meta and _("Unignore metadata") or _("Ignore metadata"),
enabled = bookinfo.has_meta and true or false,
callback = function()
BookInfoManager:setBookInfoProperties(file, {
["ignore_meta"] = not bookinfo.ignore_meta and 'Y' or false,
})
UIManager:close(self.file_dialog)
self:updateItems()
end,
},
})
table.insert(orig_buttons, {
{ -- Allow a new extraction (multiple interruptions, book replaced)...
text = _("Refresh cached book information"),
enabled = bookinfo and true or false,
callback = function()
-- Wipe the cache
if self.cover_info_cache and self.cover_info_cache[file] then
self.cover_info_cache[file] = nil
end
BookInfoManager:deleteBookInfo(file)
UIManager:close(self.file_dialog)
self:updateItems()
end,
},
})
-- Create the new ButtonDialogTitle, and let UIManager show it
local ButtonDialogTitle = require("ui/widget/buttondialogtitle")
self.file_dialog = ButtonDialogTitle:new{
title = orig_title,
title_align = orig_title_align,
buttons = orig_buttons,
}
UIManager:show(self.file_dialog)
return true
end
-- Remember our function
self.onFileHold_ours = self.onFileHold
end)
end
end
-- Similar to onFileHold setup just above, but for History,
-- which is plugged in main.lua _FileManagerHistory_updateItemTable()
function CoverMenu:onHistoryMenuHold(item)
-- Call original function: it will create a ButtonDialog
-- and store it as self.histfile_dialog, and UIManager:show() it.
self.onMenuHold_orig(self, item)
local file = item.file
local bookinfo = BookInfoManager:getBookInfo(file)
if not bookinfo then
-- If no bookinfo (yet) about this file, let the original dialog be
return true
end
-- Remember some of this original ButtonDialogTitle properties
local orig_title = self.histfile_dialog.title
local orig_title_align = self.histfile_dialog.title_align
local orig_buttons = self.histfile_dialog.buttons
-- Close original ButtonDialog (it has not yet been painted
-- on screen, so we won't see it)
UIManager:close(self.histfile_dialog)
UIManager:clearRenderStack()
-- Replace Book information callback to use directly our bookinfo
orig_buttons[2][2].callback = function()
FileManagerBookInfo:show(file, bookinfo)
UIManager:close(self.histfile_dialog)
end
-- Remove last button ("Clear history of deleted files"), we'll
-- add it back after our buttons
local last_button = table.remove(orig_buttons)
-- Add some new buttons to original buttons set
table.insert(orig_buttons, {
{ -- Allow user to view real size cover in ImageViewer
text = _("View full size cover"),
enabled = bookinfo.has_cover and true or false,
callback = function()
local document = DocumentRegistry:openDocument(file)
if document then
if document.loadDocument then -- needed for crengine
document:loadDocument(false) -- load only metadata
end
local cover_bb = document:getCoverPageImage()
if cover_bb then
local imgviewer = ImageViewer:new{
image = cover_bb,
with_title_bar = false,
fullscreen = true,
}
UIManager:show(imgviewer)
else
UIManager:show(InfoMessage:new{
text = _("No cover image available."),
})
end
UIManager:close(self.histfile_dialog)
DocumentRegistry:closeDocument(file)
end
end,
},
{ -- Allow user to directly view description in TextViewer
text = bookinfo.description and _("View book description") or _("No book description"),
enabled = bookinfo.description and true or false,
callback = function()
local description = require("util").htmlToPlainTextIfHtml(bookinfo.description)
local textviewer = TextViewer:new{
title = bookinfo.title,
text = description,
}
UIManager:close(self.histfile_dialog)
UIManager:show(textviewer)
end,
},
})
table.insert(orig_buttons, {
{ -- Allow user to ignore some offending cover image
text = bookinfo.ignore_cover and _("Unignore cover") or _("Ignore cover"),
enabled = bookinfo.has_cover and true or false,
callback = function()
BookInfoManager:setBookInfoProperties(file, {
["ignore_cover"] = not bookinfo.ignore_cover and 'Y' or false,
})
UIManager:close(self.histfile_dialog)
self:updateItems()
end,
},
{ -- Allow user to ignore some bad metadata (filename will be used instead)
text = bookinfo.ignore_meta and _("Unignore metadata") or _("Ignore metadata"),
enabled = bookinfo.has_meta and true or false,
callback = function()
BookInfoManager:setBookInfoProperties(file, {
["ignore_meta"] = not bookinfo.ignore_meta and 'Y' or false,
})
UIManager:close(self.histfile_dialog)
self:updateItems()
end,
},
})
table.insert(orig_buttons, {
{ -- Allow a new extraction (multiple interruptions, book replaced)...
text = _("Refresh cached book information"),
enabled = bookinfo and true or false,
callback = function()
BookInfoManager:deleteBookInfo(file)
UIManager:close(self.histfile_dialog)
self:updateItems()
end,
},
})
table.insert(orig_buttons, {}) -- separator
-- Put back "Clear history of deleted files"
table.insert(orig_buttons, last_button)
-- Create the new ButtonDialog, and let UIManager show it
local ButtonDialogTitle = require("ui/widget/buttondialogtitle")
self.histfile_dialog = ButtonDialogTitle:new{
title = orig_title,
title_align = orig_title_align,
buttons = orig_buttons,
}
UIManager:show(self.histfile_dialog)
return true
end
-- Similar to onFileHold setup just above, but for Collections,
-- which is plugged in main.lua _FileManagerCollections_updateItemTable()
function CoverMenu:onCollectionsMenuHold(item)
-- Call original function: it will create a ButtonDialog
-- and store it as self.collfile_dialog, and UIManager:show() it.
self.onMenuHold_orig(self, item)
local file = item.file
local bookinfo = BookInfoManager:getBookInfo(file)
if not bookinfo then
-- If no bookinfo (yet) about this file, let the original dialog be
return true
end
-- Remember some of this original ButtonDialogTitle properties
local orig_title = self.collfile_dialog.title
local orig_title_align = self.collfile_dialog.title_align
local orig_buttons = self.collfile_dialog.buttons
-- Close original ButtonDialog (it has not yet been painted
-- on screen, so we won't see it)
UIManager:close(self.collfile_dialog)
UIManager:clearRenderStack()
-- Replace Book information callback to use directly our bookinfo
orig_buttons[2][1].callback = function()
FileManagerBookInfo:show(file, bookinfo)
UIManager:close(self.collfile_dialog)
end
-- Add some new buttons to original buttons set
table.insert(orig_buttons, {
{ -- Allow user to view real size cover in ImageViewer
text = _("View full size cover"),
enabled = bookinfo.has_cover and true or false,
callback = function()
local document = DocumentRegistry:openDocument(file)
if document then
if document.loadDocument then -- needed for crengine
document:loadDocument(false) -- load only metadata
end
local cover_bb = document:getCoverPageImage()
if cover_bb then
local imgviewer = ImageViewer:new{
image = cover_bb,
with_title_bar = false,
fullscreen = true,
}
UIManager:show(imgviewer)
else
UIManager:show(InfoMessage:new{
text = _("No cover image available."),
})
end
UIManager:close(self.collfile_dialog)
DocumentRegistry:closeDocument(file)
end
end,
},
{ -- Allow user to directly view description in TextViewer
text = bookinfo.description and _("View book description") or _("No book description"),
enabled = bookinfo.description and true or false,
callback = function()
local description = require("util").htmlToPlainTextIfHtml(bookinfo.description)
local textviewer = TextViewer:new{
title = bookinfo.title,
text = description,
}
UIManager:close(self.collfile_dialog)
UIManager:show(textviewer)
end,
},
})
table.insert(orig_buttons, {
{ -- Allow user to ignore some offending cover image
text = bookinfo.ignore_cover and _("Unignore cover") or _("Ignore cover"),
enabled = bookinfo.has_cover and true or false,
callback = function()
BookInfoManager:setBookInfoProperties(file, {
["ignore_cover"] = not bookinfo.ignore_cover and 'Y' or false,
})
UIManager:close(self.collfile_dialog)
self:updateItems()
end,
},
{ -- Allow user to ignore some bad metadata (filename will be used instead)
text = bookinfo.ignore_meta and _("Unignore metadata") or _("Ignore metadata"),
enabled = bookinfo.has_meta and true or false,
callback = function()
BookInfoManager:setBookInfoProperties(file, {
["ignore_meta"] = not bookinfo.ignore_meta and 'Y' or false,
})
UIManager:close(self.collfile_dialog)
self:updateItems()
end,
},
})
table.insert(orig_buttons, {
{ -- Allow a new extraction (multiple interruptions, book replaced)...
text = _("Refresh cached book information"),
enabled = bookinfo and true or false,
callback = function()
BookInfoManager:deleteBookInfo(file)
UIManager:close(self.collfile_dialog)
self:updateItems()
end,
},
})
-- Create the new ButtonDialog, and let UIManager show it
local ButtonDialogTitle = require("ui/widget/buttondialogtitle")
self.collfile_dialog = ButtonDialogTitle:new{
title = orig_title,
title_align = orig_title_align,
buttons = orig_buttons,
}
UIManager:show(self.collfile_dialog)
return true
end
function CoverMenu:onCloseWidget()
-- Due to close callback in FileManagerHistory:onShowHist, we may be called
-- multiple times (witnessed that with print(debug.traceback())
-- Stop background job if any (so that full cpu is available to reader)
logger.dbg("CoverMenu:onCloseWidget: terminating jobs if needed")
BookInfoManager:terminateBackgroundJobs()
BookInfoManager:closeDbConnection() -- sqlite connection no more needed
BookInfoManager:cleanUp() -- clean temporary resources
-- Cancel any still scheduled update
if self.items_update_action then
logger.dbg("CoverMenu:onCloseWidget: unscheduling items_update_action")
UIManager:unschedule(self.items_update_action)
self.items_update_action = nil
end
-- Propagate a call to free() to all our sub-widgets, to release memory used by their _bb
self.item_group:free()
-- Clean any short term cache (used by ListMenu to cache some DocSettings info)
self.cover_info_cache = nil
-- Force garbage collecting when leaving too
collectgarbage()
collectgarbage()
-- Call original Menu:onCloseWidget (no subclass seems to override it)
Menu.onCloseWidget(self)
end
function CoverMenu:tapPlus()
-- Call original function: it will create a ButtonDialogTitle
-- and store it as self.file_dialog, and UIManager:show() it.
CoverMenu._FileManager_tapPlus_orig(self)
-- Remember some of this original ButtonDialogTitle properties
local orig_title = self.file_dialog.title
local orig_title_align = self.file_dialog.title_align
local orig_buttons = self.file_dialog.buttons
-- Close original ButtonDialogTitle (it has not yet been painted
-- on screen, so we won't see it)
UIManager:close(self.file_dialog)
UIManager:clearRenderStack()
-- Add a new button to original buttons set
table.insert(orig_buttons, {}) -- separator
table.insert(orig_buttons, {
{
text = _("Extract and cache book information"),
callback = function()
UIManager:close(self.file_dialog)
local Trapper = require("ui/trapper")
Trapper:wrap(function()
BookInfoManager:extractBooksInDirectory(current_path, current_cover_specs)
end)
end,
},
})
-- Create the new ButtonDialogTitle, and let UIManager show it
local ButtonDialogTitle = require("ui/widget/buttondialogtitle")
self.file_dialog = ButtonDialogTitle:new{
title = orig_title,
title_align = orig_title_align,
buttons = orig_buttons,
}
UIManager:show(self.file_dialog)
return true
end
return CoverMenu